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19-100178
CITY OF ti Federal Way Centered on Opportunity October 14, 2019 Mr. Ray Vefik CBRE/HEERY 1420 5th Avenue, Suite 1700 Seattle, WA 98101 rvefikQL-v s.org Re: File #19-100178-UP; USE PROCESS III CONDITIONAL APPROVAL Lake Grove Elementary School, 303 SW 308th Street, Federal Way Dear Mr. Vefik: CITY HALL 33325 8th Avenue South Federal Way, WA 98003-6325 (253) 835-7000 www.cityoffederalway.com Jim Ferrell, Mayor The City of Federal Way has completed the administrative review and hereby issues conditional approval of the proposal to construct a new Lake Grove Elementary School west of the site of the existing elementary school, with the old school demolished and site improvements completed once the new school is occupied. The Process III Master Lane Use (MLU) application submitted on January 10, 2019, with final revision submitted August 30, 2019, is hereby conditionally approved per the enclosed Findings for Project Approval (incorporated into this decision in full), and the following conclusions based on those facts: 1. The proposal is consistent with the comprehensive plan; 2. The proposal is consistent with all applicable provisions of Federal Way Revised Code (FWRC); 3. The proposal is consistent with the public health, safety, and welfare; 4. The streets and utilities in the area of the subject property are adequate to serve the anticipated demand from the proposal; 5. The proposed access to the subject property is at the optimal location and configuration; and 6. Traffic safety impacts for all modes of transportation, both on and off site, are adequately mitigated. The remainder of this letter outlines the land use review process required for this particular site improvement; summarizes the State Environmental Policy Art (SEPA) process; lists conditions of the land use decision; and provides other procedural information. This land use decision does not authorize initiation of construction activities. REVIEW PROCESS The site is located in a Single Family Residential (RS7.2) zoning district. School uses are permitted in the zone subject to Federal W/ay Revised Code (FWRC) 19.200.090. The school use is reviewed through Process III, Project Appmral, in conjunction with environmental review under the .State Environprental PO,69 A -t (SEPA). The Director. of Community Development makes a written decision on the application based on the criteria listed under FWRC 19.65.100. Project approval does not grant License to begin any type of site work. Mr. Ray Vefik Page 2 of 3 October 14, 2019 SEPA PROCESS The responsible official -at: 1wpderal Way Public Schools (FWPS) issued a Mitigated Determination of Nonsignif.cance (MDNS) .Oir the school. rebuild proposal on January 10, 2019. The appeal period for the determination ended on January 28, 2019. Subsequent minor addendums to SEPA were issued with no corrections to the initial determination. CONDITIONS OF APPROVAL The following conditions are reasonably necessary to eliminate or minimize any undesirable effects of granting application approval. Additional technical comments may result from the building permit or engineering review. 1. Prior to issuance of Certificate of Occupancy, FATS must sign and record the Stormwater Declaration of Covenant. 2. Prior to the issuance of a Temporary Certificate of Occupancy, or Certificate of Occupancy, all frontage improvements shall be constructed, inspected, and accepted by the city. Acceptance includes submission of an As -Built Drawing, as defined in Section 1.2 of the Public Works Development Standards, for review and approval. 3. Prior to beginning construction, tree protective fencing shall be installed in accordance with notes #1-5 on sheet L206. 4. Individual technical review comment letters will be sent by their respective plan reviewers regarding building permit #19-100959-CO. 5. Prior to building construction, the applicant must obtain building permit approval. This Use Process III site plan approval decision does not grant building permit approval. Technical review letters for the building permit will be sent by the individual department reviewer. BUILDING PERMIT REQUIREMENTS This Process III land use decision does not constitute a building permit, or authorize clearing/grading activities. The associated building permit application (19-100959-00-CO) is currently under review. Any changes as a result of the Process III approval must be reflected on the submitted building permit plans. If you have any questions regarding the building permit review, please contact the Permit Center at 253-835- 2607, or nennitcenter ct.ciLMffederaitivay.com. APPROVAL DURATION Per FWRC 19.15.100(2), unless modified or appealed, the Process III decision is valid for five years from the date of issuance of the decision. Time extensions to the decision may be requested prior to the lapse of approval following the provisions listed in FWRC 19.15.110. The improvements must be substantially completed within the five-year time period, or the land use decision becomes void. 19-100178-00-UP Doa I.D. 79453 Mr. Ray Vefik Page 3 of 3 October 14, 2019 APPEALS Per FWRC 19.05.360, the effective date of issuance is three calendar days following the date of this letter, or October 17, 2019. Pursuant to FWRC 19.65.120{1}, this land use decision may be appealed by the applicant, any person who submitted written comments or information, or any person who has specifically requested a copy of the decision. In compliance with FL'VRC 19.65.120(2), any appeal must be in the form of a letter delivered to the Community Development Department, with the established fee, and within 14 days after the effective date of issuance of this decision, or October 31, 2019. The appeal letter must contain a statement identifying the decision being appealed, along with a copy of the decision; a statement of the alleged errors in the di -rector's decision, including identification of specific factual findings and conclusions of the director disputed by the person filing the appeal; the appellant's name, address, telephone number, and fax number; and any other information to facilitate communications with the appellant. The Federal Way Hearing Examiner will hear any appeals of the Process III decision. CLOSING This land use decision does not waive compliance with future City of Federal Way codes, policies, and standards relating to this development. If you have any questions regarding this decision, please contact Associate Planner Natalie Kamieniecki at 253- 835-2638, or natiEe.kanlieniecki@ciuoffeder-alwn.com. Sincerely, $Tian Davis Community Development Director enc: Exhibit "A" Findings for Project Approval Natalie Kamieniecki, Associate Planner Erik Peterson, Senior Engineering Plans Reviewer Sarady Long, Senior Transportation Planning Engineer Brian Asbury, Lakehaven Water & Sewer District Chris Cahan, South King Fire & Rescue Mike Benrien, Federal Way Public Schools, mbenzien@fwps.orrg Casey Moore, Federal Way Public Schools, c score &Ms.org Sam Schafer, integrus Architecture, sschafer [@intcgrusarch.com Doo I.D. 79453 19-100179-00-UP CITY OF Federal Way Centered on Opportunity February 7, 2019 Mr. Ray Vefik CBRE/Heery 1420 Fifth Avenue, Suite 1700 Seattle, WA 98101 rvefikDa &ps.org Re: File #19-100178-up; LETTER OF COMPLETE APPLICATION Lake Grove Elementary School, 303 SW 308th Street, Federal Way Dear Mr. Vefik: CITY HALL 33325 8th Avenue South Federal Way, WA 98003-6325 (253) 835-7000 www. cityoffederalway.. com Jim Ferrell, Mayor FILE. The Community Development Department is in receipt of your January 10, 2019, Process Ili Master Land Use (NILU) application. The proposal includes constructing a new two-story elementary school with associated site improvements. The existing elementary school is to be demolished prior to construction of the nets school. Pursuant to Federal Way Reaixed Cade (FWRC) 19.15.045, within 28 days of receiving an application, the city shall determine whether all information and documentation required for a complete application has been submitted. NOTICE OF COMPLETE APPLICATION Please consider this correspondence a formal Letter of Complete Application. Pursuant to FWRC 19.15.045, the application is deemed complete as of February 6, 2018. This determination of completeness is based on a review of your submittal relative to applicable requirements referenced within FWRC 19.15.040. The submittal requirements are not intended to determine if an application conforms to city codes; they are used . only to determine if all required materials have been submitted. A 120-day time line for reviewing the Process III application has started as of this date. The city's development regulations allow the department 120 days from the date that an application is deemed complete to take action on the application. However, the 120-day time line will be stopped any time the city requests corrections and/or additional information. You will be informed of the status of the 120-day time line when you are notified in writing that corrections and/or additional information are needed. NOTICE OF APPLICATION Formal processing and review of your applications will now begin. A Notice of Application (NGA) will be posted on the city's official notice boards, published in the Federal ll/ay Mdr►nr, and mailed to the persons within 300 feet of each boundary of the subject property within 14 days of this letter, pursuant to FWRC 19.65.070(2). The city will prepare two Public Notice Boards that the applicant will be responsible for posting on site by February 15, 2019. Further posting instructions and the notice boards will be available for pick-up at Will Call at the 2nd floor of City Hall on February 11, 2019. Mr. Ray Vefik Page 2 of 2 February 7, 2019 CLOSING The Development Review Committee PRC) staff is preparing initial technical review comments that will be forwarded to you in a separate correspondence at a later date. Technical review comments may result in a request for additional information and revisions in order to comply with applicable code requirements. If you have any questions regarding this letter or your development project, please contact me at 253-835-2638, or nataHe.kan-lietiiecki@cityoffederalway.com. Sincerely, Natalie Kamieniecki Associate Planner enc: Notice of Application c: Brian Davis, Community Development Director Greg Kirk, Plans Examiner Kevin Peterson, Engineering Plans Reviewer Soma Chattopadhyay, Traffic Engineer Brian Asbury, Lakehaven Water & Sewer District Chris Cahan, South King Fire & Rescue Mike Benzien, Federal Way Public Schools, mbenrienCrrlfiv�s.org 19-100178-00-UP Doc. I.D. 78746 40k CITY Federalo. Way DEPARTMENT OF COMMUNITY DEVELOPMENT 33325 8th Avenue South Federal Way WA 98003 253-835-7000; Fax 253-835-2609 www,ct offederalwo .corn DECLARATION OF DISTRIBUTION 1, Maria Smith hereby declare, under penalty of perjury of the laws of the State of Washington, that a: 0 Notice of Land Use Application/Action ❑ Notice of Determination of Significance (DS) and Scoping Notice ❑ Notice of Environmental Determination of Nonsignificance (SEPA, DNS) ❑ Mitigated Environmental Determination of Nonsignificance (SEPA, MDNS) ❑ Notice of Land Use Application & Optional DNS/MDNS ❑ FWRC Interpretation ❑ Other ❑ Land Use Decision Letter ❑ Notice of Public Hearing before the Hearing Examiner ❑ Notice of Planning Commission Public Hearing ❑ Notice of LUTC/CC Public Hearing ❑ Notice of Application for Shoreline Management Permit ❑ Shoreline Management Permit ❑ Adoption of Existing Environmental Document Was ❑ emailed 0 mailed ❑ faxed and/or ❑ posted to or at each of the attached addresses on February 15 , 2019. Project Name Lake Grove Elementary School Rebuild File Number(s) 19-100178-UP Signature Date Februa 15 2019 C:\Users\tinap\Desktop\Declaration of Distribution.doc/Last printed 2/14/2D19 4:43:00 PM 60VIL/[ :ale(] A4uno, 6w)Rynoa 6uIN p uolsswcad ualurn Rq paaca pel!44od sldew slyl uo uorewioYu �o dew SfyY yo ales Ruy 'dew slyl uo pau¢;,1o7 u0!1pu+Yoyvl ayY p asnsw jo asn ayi woj+ 6ullnsai sgoid Ysol jo sonuanaa lsol 'ol pgwr You lnq '6u!pnpul sa6,nuea,enuanbasum • Ielusp,04 1_4pu l Ye pe ds ieieuo6 Ruc jo) alge r eq tau Ie4s R;uno3 51,m ;5rp0A A1pNns a Qe Gen Yq PeP-11; 10011 1++ounoop 4lq.l. -u0,luuuofN tpns 10 *In ayY of g4a.0 �o 'ssau�wp �sauaraldwee 'Roelnme 04 W N 'peltd,m Wp4*0 Se{iu01£M1Osu09elummdu1 m Gage 1 Flundo S%A'aonau lfOL(IF* aOYeiP W 13*Rrks C s, pue seoinoap Au YNrn Irwog AeS ftnOa bull, Rq palldwm uaaq sey dew syl uo papryoq uolYew,o;q ayl zlTli_Ot_ , lrI t.�C—i',—fJJthJY`cIF l�1s3ru!iZ�{,1�'�.�',4�� �'�L. 4' [�+^3�' ��°'aQO�1 S 0�Iiif�Oy3i`Lll:.V iO fI 'G �C'tim91O507•I InL7r_rU3 i�i3SH� 4� � fLJ_ I ;ti' '� [ r,Inr; d ay_ l `!(J f]4- iL �i _ �`on _II0��I ISS�:�ai�rt C'�11 +7yIVI .I_ aG �L tfl.� i�C [LI'I��4-1' EZcr lt PF�'IurrS ��I�C,�fi$+t��_•p � (L`rr+'r;riF'cF�i,hriy�?S€ii�f O(nay/=F �t-�3fcr .��'�try[q 11G'h_�Yr°2f -una 6ul>i 'aai p sAos ass Arun �}o�G O�St LtICriSr . 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The existing school will be demolished prior to the construction of swmrnns+ ' the new school. lake n+Grove _-I E3emeaN $ChOOR Applicant: Ray Vefik, CBRE/Heery, 1420 2 Fifth Avenue, Suite 1700, Seattle, WA 98101, _ 206-835-0473 Project Location: 303 SW 308"h Street/ Parcel l„.sy _ie 082104-9035 5 3091h I Application Received: January 10, 2019 Determined Complete: February 6, 2019 Notice of Application: February 15, 2019 Environmental Review: The environmental review required under State Environmental Policy Act (SEPA) has been conducted by Federal Way Public School as lead agency. A MDNS was issued on January 10, 2019. Permits Under Review: Use Process III (File #19-100178-UP), Concurrency (File #19-100187-CN), Street Modification Request (File #19-100559-SM) Environmental Documents & Required Studies: Updated Surface Exploration, Geologic Hazard, and Geotechnical Engineering Report, prepared by Associated Earth Sciences, Inc., October 15, 2018 and Technical Information Report, prepared by LPD Engineering, PLLC, Draft January 7, 2019. Development Regulations Used for Project Mitigation: Federal Way Revised Code (FWRC) Title 16 "Surface Water Management," and Title 19, "Zoning and Development Code." Public Comment & Appeals: Any person may submit written comments on the land use application to the Director of Community Development by 5:00 p.m. on March 4, 2019. Only persons who submit written comments to the Director (address below) or specifically request a copy of the decision, may appeal the decision. Availability of File: The official project file, existing environmental documents, and required studies are available for public review at the Department of Community Development's Permit Center, 33325 8`h Avenue South, Federal Way, WA 98003. Staff Contact: Associate Planner Natalie Kamieniecki, 253-835-2638, natalie.kamieniecki@cityoffederalway.com Published in the Federal Way Mirror February 15, 2019 VV0 0918/0919@ luany oana a1Q11zdwo3 ww L9 x ww gZ 1ewjo1 op 91}anbq MS�����5 09 L9/0915® tiany ql!m 91g11sdwoo „8/9 Z x „G azls�el Pentecostal Bethel Bethel Christian Ctr Fed Wy Pentecostal Bethel 2033 2nd Ave 414 SW 312th St 2033 2nd Ave Seattle, WA 98121 Federal Way, WA 98023 Seattle, WA 98121 M & N Wong Kent LLC Bayview Holdings L L C Daryoush Hakki 40 Lake Bellevue Dr Ste 270 9757 Juanita Dr NE Ste #300 30572 5th Ave SW Bellevue, WA 98005 Kirkland, WA 98034 Federal Way, WA 98023 Robert Wagner Jeffrey Marlow Justine Bomber 2354 West Bud Circle 30706 5th Ave SW 30714 5th Av SW Taylorsville, LIT $4129 Federal Way, WA 98023 Federal Way, WA 98023 Elma Magbalot Keith Webb Alexander Mariano 31113 11th PI SW 9515 198th Ave E Apt 273 30705 4th Av SW Federal Way, WA 98023 Bonney Lake, WA 98391 Federal Way, WA 98023 Anatoly Chelombytko Oscar E Rodriguez Catherine Sommer 30573 4th Av SW 30567 4th Ave SW 30568 4th Ave SW Federal Way, WA 98023 Federal Way, WA 98023 Federal Way, WA 98023 Fusion James Townsend Debra Williams P O Box 23934 30706 4th Ave SW 30714 4th Ave SW Federal Way, WA 98093 Federal Way, WA 98023 Federal Way, WA 98023 Fakhriddin Fazilov Kyu Kim Yeo Yoon 31075 2nd PI SW 31057 2nd PI SW 31045 2nd PI SW Federal Way, WA 98023 Federal Way, WA 98023 Federal Way, WA 98023 Adam Choi Gary Archer Vladimir Kovalchuk 3912 Turnagain Blvd E 31003 2nd PI SW 200 SW 310th St Anchorage, AK 99517 Federal Way, WA 98025 Federal Way, WA 98023 Byung Jung Toan Le Ingrid Thompson 192 SW 310th PI 180 SW 310th PI 166 SW 310th St Federal Way, WA 98023 Federal Way, WA 98023 Federal Way, WA 98023 Binali Shakirov Taranjeet Kaur Raymond James Trust Na 144 SW 310th PI 130 SW 310th PI PO Box 23559 Federal Way, WA 98023 Federal Way, WA 98023 Saint Petersburg, FL 33733 S / Etiquette do format 25 mmx'67 mpm compatible ee a c�Avery/®510 STAPLE60/8160 09 L8/091g® tiaAV oane algl}edwoo ww L9 x ww 9Z jawjof op aaanblt� 09 L8I091g� �BAy ilI2M alq}tedu3oo v815 Z x ,l 8zlsl�cl ;�V.i rV Mr+i.�.► Thuyvy Do Paul Lee Gurpinder Chahal 31004 1st PI SW Federal Way, WA 98023 34709 56th Ct S Auburn, WA 98001 129 SW 310th PI Federal Way, WA 98023 Sung Chung 141 SW 310th St Steve Lao 169 SW 310th PI Sandra Lee 187 SW 310th PI Federal Way, WA 98023 Federal Way, WA 98023 Federal Way, WA 98023 Nayoung Shon 195 SW 310th PI Carol Tilley 202 SW 311 th St Chung Kim 186 SW 311 th St Federal Way, WA 98023 —Federal Way, WA 98023 Federal Way, WA 98023 Israfil Izetov Gail Breithaupt Castro & Elgin LLC 164 SW 311th PI 148 SW 311th PI 1719 SW Roxbury St Federal Way, WA 98023 Federal Way, WA 98023 Seattle, WA 98106 Steven Wilcox 30645 3rd Av SW Charles Bryant 30653 3rd Ave SW Kuwar Singh 30659 3rd Av SW Seattle, WA 98023 Federal Way, WA 98023 Federal Way, WA 98023 Richard Brown Tomas Martinez 30642 3rd Ave SW Peter Morgenroth 30650 3rd Ave SW 30634 3rd Ave SW Federal Way, WA 98023 Federal Way, WA 98023 Federal Way, WA 98023 Mark Wynne Robert Kleinfelder II 30663 2nd Ave SW Tirso Argueta 30657 2nd Ave SW 30658 3rd Ave SW Federal Way, WA 98023 Federal Way, WA 98023 Federal Way, WA 98023 Rogelio Lugo 30649 2nd Ave SW Maria Trejo 30643 2nd Ave SW Mike Cacho 30642 2nd Av SW Federal Way, WA 98023 Federal Way, WA 98023 Federal Way, WA 98023 Cammie Eaton Linh Nguyen 7637 S 114th St Ceja Chavez 30664 2nd Ave SW 472 S 190th St Burien, WA 98148 Seattle, WA 98178 Federal Way, WA 98023 Anne Saenz Linda McDaniel 16808 26th Ave SW Jacob Melnik 30651 1 st PI SW 1805 Baker Ave Everett, WA 98201 Burien, WA 98166 Federal Way, WA 98023 STAPLES0 label size 1 " x 2 5/8" compatible with Avery 05160/8160 etiquette do format 25 mm x 67 mm compatible avec Avery 05160/8160 0918/0915® d.iany oane alglledwoo ww G9 x ww 5Z lewjol op qa ft! _ 0918/0q I g@ Al2Ay qj!M alrigedwaJ ,,8/9 Z x „I. az!s PQn� ("OV,J Y%j riV Anatoliy Fedyuk Susan Thacker Roger Wiley 30643 1st PI SE 124 SW 307th PI 116 SW 307th PI Federal Way, WA 98023 Federal Way, WA 98023 Federal Way, WA 98023 Carolyn Hurn Alexandr Zimoglyad PO Box 13372 125 SW 307th PI Des Moines, WA 98198 Federal Way, WA 98023 STAPLES, etiquette do format 25 mm x 67 mm colmpat b evave®very/®5160/8160 04A STATE OF WASHINGTON, COUNTY OF KING } AFFIDAVIT OF PUBLICATION PUBLIC NOTICE Ken Spurrell, being first duly sworn on oath that he is the Legal Advertising Representative of the Federal Way Mirror a weekly newspaper, which newspaper is a legal newspaper of general circulation and is now and has been for more than six months prior to the date of publication hereinafter referred to, published in the English language continuously as a weekly newspaper in King County, Washington. The Federal Way Mirror has been approved as a Legal Newspaper by order of the Superior Court of the State of Washington for King County. The notice in the exact form annexed was published in regular issues of the Federal Way Mirror (and not in supplement form) which was regularly distributed to its subscribers during the below stated period. The annexed notice, (Ad #844908) a: Public Notice Published 1 time(s) beginning on 02/15/2019 and ending on 02/15/2019. The full amount of the fee charged for said foregoing publication is the sum of $120.14. Ken Spurrell Legal Advertising Representative, Federal Way Mirror Subscribed and sworn to me this 15th daXQ�f a#Aary, 2019. N F i✓� �,sswnr A` MOW S ll nF UVASN���!` r Residing in Tacoma, Washington City of Federal Way FWM844908 FkWra! Way NOTICE OF MASTER LAND USE APPLICATION Project Name. Lake Grove Elementary School Re- build project Description: The proposal is replace the existing Lake Grove Elementary School with a tWO- story elementary school building with parking and a play field. Associated site improvements are in- cluded. The existing school vdll be demolished prior to the construction of the new school, Applicant: Ray Vetik, CBREIHeery, 1420 Fifth Ave- nue, Suite 1700, Seattle, WA 98101. 206.835- 0473 Project Location: 303 SW 308th Street/ Parcel 082104.9035 Application Received: January 10, 2019 Determined Complete: February 6, 2019 Nof! ca of Application: February 15.2019 Environmental Review: The environmental review required under State Environmental Policy Act (BE - PA) has been conducted by Federal Way Public School as lead agency, A MONS was issued on January 10, 2019. Permits Under Review: Use Process III (File j!19- 100178-UP), Concurrency (File 019-100187-CN), Street Modificatian Request (File 919-100559-SM) Environmenial Documents $ Required studies: Updated Surface Exploration, Geologic Hazard, and Geotechnical Engineering Report, prepared by As- sociated Earth Sciences, Inc., October 15, 2018 and Technical Information Report, prepared by L P D Engineering, PLLC, Draft January 7.2019. Development Regulations Used for Project Mitl- gation: Federal Way Revised Code (FWRC] Title 18 'Surface Water Management: and Title 19, 'Zoning and Development Code.' Public Comment & Appeals: Any person may sub- mit written commants on the land use application to the Director of Coin munity Development by 5:00 p.m. an March 4, 2019. only pmons who submit written comments to the director (address below) or specifically request a copy of the decision, may appeal the decision. Availability of File: The official project file, exist- ing environmental documents, and required stud- les are available for public review at the Depart- ment of Community Development's Permit Center 33325 8th Avenue South, Federal WAY, WF 98003. Slalf Contact: Associate Planner Natalie Kamie niecki, 253-835-2638, natalie.kamienieckifttyof federalway.com Published in the Federal Way Mirror February 15 2019#844908 wAm.- CITY 1000**� OF Federal Way DEPARTMENT OF COMMUNITY DEVELOPMENT 33325 8t" Avenue South Federal Way WA 98003 253-835-7000; Fax 253-835-2609 www.Cifyo f f e d e ralway.co m DECLARATION OF DISTRIBUTION I, E. Tina Piety hereby declare, under penalty of perjury of the laws of the State of Washington, that a: 0 Notice of Land Use Application/Action ❑ Notice of Determination of Significance (DS) and Scoping Notice ❑ Notice of Environmental Determination of Nonsignificance (SEPA, DNS) ❑ Mitigated Environmental Determination of Nonsignificance (SEPA, MDNS) ❑ Notice of Land Use Application & Optional DNS/MDNS ❑ FWRC Interpretation ❑ Other ❑ Land Use Decision Letter ❑ Notice of Public Hearing before the Hearing Examiner ❑ Notice of Planning Commission Public Hearing ❑ Notice of LUTC/CC Public Hearing ❑ Notice of Application for Shoreline Management Permit ❑ Shoreline Management Permit ❑ Adoption of Existing Environmental Document Was ❑x emailed ❑ mailed ❑ faxed and/or ❑ posted to or at each of the attached addresses on February 13 2019. Project Name Lake Grove Elementary School Rebuild File Number(s) 19-100178-UP Signature r .— Date ^February 14, 2019 C:\Users\tinap\Desktop\Declaration of Distribution.doc/Last printed 2/14/2019 4:42:00 PM Tina Piet From: Ken Spurrell <legals@tacomadailyindex.com> Sent: Wednesday, February 13, 2019 10:30 AM To: Tina Piety Subject: Re: Legal Notices Confirming receiving 3 notices to pub in the FWM on Feb 15th. thanks Ken Ken Spurrell Publisher Direct: 253-232-5219 Internal: 15001 Fax: 253-627-2253 15 Oregon Ave, Suite 101, Tacoma, WA 98409 19- Sound Publishing Man Print Rate Online Rates Media Kit Sound In On Wed, Feb 13, 2019 at 10:19 AM Tina Piety cwrote: Hello, Please publish the attached legal notices (Lake Grove Elementary NOA, 19-100178-UP; Mirror Lake Elementary NOA,19-100188-UP; and Wildwood Elementary NOA, 19-100173-UP ) in the Federal Way Mirror's Friday (2/15/2019) issue. Please furnish affidavits of publication. This is for the Community Development account 83722477. Thank you, Tina E. Tina Piety, CAP -OM Administrative Assistant 11 C .+ M, Federal Warr Community Development Department 33325 81h Avenue South Federal Way, WA 98003-6325 Phone:253/835-2601 Fax: 253/835-2609 www.city offcdcraI way .com 111�k CITY OF Federal flay NOTICE OF MASTER LAND USE APPLICATION Project Name: Lake Grove Elementary School Rebuild Project Description: The proposal is replace the existing Lake Grove Elementary School with a two- story elementary school building with parking and a play field. Associated site improvements are included. The existing school will be demolished prior to the construction of the new school. Applicant: Ray Vefik, CBRE/Heery, 1420 Fifth Avenue, Suite 1700, Seattle, WA 98101, 206-835-0473 Project Location: 303 SW 308"' Street/ Parcel 082104-9035 Application Received: January 10, 2019 Determined Complete: February 6, 2019 Notice of Application: February 15, 2019 Environmental Review: The environmental review required under State Environmental Policy Act (SEPA) has been conducted by Federal Way Public School as lead agency. A MDNS was issued on January 10, 2019. Permits Under Review: Use Process III (File 419-100178-UP), Concurrency (File #19-100187-CN), Street Modification Request (File #19-100559-SM) Environmental Documents & Required Studies: Updated Surface Exploration, Geologic Hazard, and Geotechnical Engineering Report, prepared by Associated Earth Sciences, Inc., October 15, 2018 and Technical Information Report, prepared by LPD Engineering, PLLC, Draft January 7, 2019. Development Regulations Used for Project Mitigation: Federal Way Revised Code (FWRC) Title 16 "Surface Water Management," and Title 19, "Zoning and Development Code." Public Comment & Appeals: Any person may submit written comments on the land use application to the Director of Community Development by 5:00 p.m. on March 4, 2019. Only persons who submit written comments to the Director (address below) or specifically request a copy of the decision, may appeal the decision. Availability of File: The official project file, existing environmental documents, and required studies are available for public review at the Department of Community Development's Permit Center, 33325 8t" Avenue South, Federal Way, WA 98003. Staff Contact: Associate Planner Natalie Kamieniecki, 253-835-2638, natalie.kamieniecki@cityoffederalway:com Published in the Federal Way Mirror February 15, 2019 BUILDING DIVISION PRE -CONSTRUCTION MEETING SIGN -IN PROJECT NAME: DATE: COMPANY/ORGANIZATION PHONE NUMBERS E-MAIL, NAME Office:dy-3- n-v- r;�_�r Other: p$�h" Foz c'Ofce:JbD�b5C)62• s✓ Other: 3. Office:2o. �t5q oi6 cac. b .cc Other: 4. 2 eG rr �? Office: a rah?-2 a /"- *, . Cor Other: 75.=.VW41-�J Office:%iCpriA�C- �;,,j Other: Office: �6G76`19077 ��• 6. Other: 7. Office: Other: 8 Office: Other: 9 Office: Other: 10. Office: Other: 11. Office: Other: 12 Office: Other: 13 Office: Other: 14. Office: Other: 15. Office: Other: Bulletin #146 — May 3, 2019 Page 8 of 8 k:\Handouts\Pre-Con Meeting Notes M Imi engineering pl c Memorandum Date: September 25, 2019 To: City of Federal Way Development Services Federal Way, WA 98003 Attn: Soma Chattopadhyay From: Laurie J Pfarr, PE 1' J. p� o.V %tsf�. 30 6 S��NA1.�.? -20 Project: Federal Way Public Schools — Lake Grove Elementary School LPD Project # 094-18-01 1932 First Avenue, Suite 201 Seattle, WA 98101 p. 206.725.121 1 f. 206.973.5344 Ipdengineering.com RESUBMITTED OCT 15 2019 CITY OF FEDERAL WAY COMMUNITY DEVELOPMENT 19-1negs Subject: FWPS: Lake Grove Elementary Ramp and Crossing/Crosswalk Maximum Extent Feasible (MEF) Documentation PROJECT DESCRIPTION Road Parameters: • Design Class: Type S ■ Posted Speed: 25 mph • Design Year ADT: 1,630 • Access Control: Uncontrolled This project includes frontage improvements, specifically road widening, installation of sidewalks and pedestrian facilities associated with the reconstruction of Lake Grove Elementary School. The following MEF Documentation is based upon the Proposed Accessibility Guidelines for Pedestrian Facilities in the Public Right of Way (PROWAG). At this time, the PROWAG guidelines have not been adopted by the U.S. Department of Justice and are therefore not enforceable standards under Title II of the ADA. Based upon the definitions in the PROWAG, the portions of the project improvements impacted by the consideration of these rules are the area of widening, or removal and replacement of roadway or sidewalk. These improvements are defined as alterations: Alteration. A change to a facility in the public right-of-way that affects or could affect pedestrian access, circulation, or use. Alterations include, but are not limited to, resurfacing, rehabilitation, reconstruction, historic restoration, or changes or rearrangement of structural parts or elements of a facility. Page 1 of 4 September 25, 2019 Lake Grove Elementary School FWPS: Lake Grove Elementary School Ramp and Crossing/Crosswalk Maximum Extent Feasible Documentation engineeringIo Page 2 of 4 EXISTING AND PROPOSED PEDESTRIAN CROSSINGS At the tee intersection of 2nd Avenue SW and SW 3081 Street, there is an existing raised crosswalk. This is one of three existing crosswalks which are currently used to access the Lake Grove Elementary School site. The raised crosswalk is located at the east side of the existing east school driveway. The other two existing crosswalks are located at the intersection of 3`d Avenue SW and SW 308' Street and the intersection of 4th Avenue SW and SW 308' Street (west driveway). The redevelopment of Lake Grove Elementary School proposes to move the east entrance of the school to 3" Avenue SW and SW 308' Street. The school crossing guards will be located at this east entrance as well as at the intersection of 4th Avenue SW and SW 308' Street. See diagram below existing and proposed student routes. 3 EY CROSSWALK I Illllll� �- •-- - - - - - - '� Illillt �---- _ _� .__ �� . r--i .M I L + 1 '^.. _...- �4•z' �li`.:• 'ff, ��%J//f'� tit`. ■ :b+. ` .�i EXIST[ G UliiE GRaVE---•-- - •4 `. � :.�d' k ELEMENTARY SCHOOL- ' %f + PROPOSED STUDENT ROUTE r i PROPOSED I i 1 � I i CROSSWALKSiJ Q 77+CO '•� `�•. .. r.............. --. sW5gB7N$7TLfT •.�• _ • • • • 77+00 ` J J W LACE R V LEMENTARY SCHOOL Since the road widening will require the reconstruction of a portion of the SW 308" roadway, the pedestrian facilities at 41' Avenue SW, 3`d Avenue SW, and 2nd Avenue are considered alterations. Based upon our review of the ADA ramps and crosswalks, the ramps and crosswalk at 4' Avenue SW/SW 308' Street and 3`d Avenue SW/SW 308' Street, meet the guidelines set forth in PROWAG. The ramp and crosswalk at 2nd Avenue SW/ SW 308' Street cannot meet the proposed PROWAG crossing guidelines and requires Maximum Extent Feasible (MEF) Documentation. Please see attached Figure 1, Ramp Geometrics Worksheet and Crossing/Crosswalk Geometrics Worksheet. September 25, 2019 Lake Grove Elementary School FWPS: Lake Grove Elementary School Ramp and Crossing/Crosswalk Maximum Extent Feasible Documentation engineering p c Page 3 of 4 EXISTING PEDESTRIAN CROSSING AT 2ND AVENUE SW AND SW 308TH STREET The slope of SW 308th Street at the crosswalk within the intersection with 2" Avenue is varying from approximately 13.3% to 15.5% based upon the field survey with a longitudinal slope of less than 2%. There are currently no ramps on either side of this raised crosswalk. Based on the existing slopes noted above, this crosswalk does not meet ADA standards for an accessible route of travel. See photo below of existing raised crosswalk. PEDESTRIAN DESIGN STANDARDS: Pedestrian Access Routes Per Chapter 3 PROWAG: R302.5.1 Pedestrian Street Crossings. Where pedestrian access routes are contained within pedestrian street crossings, the grade of the pedestrian access route shall be 5 percent maximum. R302.6 Cross Slope. Except as provided in R302.6.1 and R302.6.2, the cross slope of pedestrian access routes shall be 2 percent maximum. R302.6.1 Pedestrian Street Crossings Without Yield or Stop Control. Where pedestrian access routes are contained within pedestrian street crossings without yield or stop control, the cross slope of the pedestrian access route shall be 5 percent maximum. MEF PROPOSALS AND JUSTIFICATION Due to the existing roadway slope of from approximately 13.3% to 15.5% along SW 308th Street at the 2nd Avenue intersection, the introduction of a ramp with a cross slope of 5% would create an unsafe travel lane in the roadway unless approximately 500 to 1000 feet of roadway was reconstructed. The impacted length would be dependent on the City required design standards that would need to be implemented; AASHTO comfort curve or stopping site distance. This roadway re -design would impact all the existing utilities, surface improvements, and adjacent property owners' driveways and it is not known if this could be feasibly done without the need to have access to private property. September 25, 2019 Lake Grove Elementary School FWPS: Lake Grove Elementary School Ramp and Crossing/Crosswalk Maximum Extent Feasible Documentation engineering p c Page 4 of 4 To construct the curb ramp and cross walk to be 100% compliant would require re -profiling the existing roadway. This type of major reconstruction is not feasible in this type of alteration project. As indicated in the previous diagram, the Lake Grove Elementary redevelopment project is proposing to modify the "safe route to school and eliminate the school crossing at 2"d Avenue SW and SW 308`' Street. Pedestrians going to the school would be routed from 2"d Avenue, west, along the wide shoulder on the north side SW 308' Street to the raised crosswalk with crossing guard at 3' Avenue SW and SW 308' Street which will be ADA compliant. The project proposes to add a widened 8-inch stripe for the fog line on the north margin of SW 308' with no parking signs between 2"d Ave SW and 31 Ave SW to provide additional protection to pedestrians. Additionally, the project proposes to provide an ADA ramp on the south side of SW 3081 Street at the west margin of I' Avenue SW to direct pedestrians traveling along lst Avenue SW to curb and sidewalk along the southside of SW 308' Street. This ramp will be ADA compliant in all directions except for the "counter slope" as this dependent upon the existing pavement which is at 5.4%. The project proposes to install the ramp at 2"d Avenue SW and SW 308' Street to match the existing roadway slope, which is the maximum feasible for this location and the scope of this type of alteration as well as maintain the existing road slope at the proposed ADA compliant ramp at I" Avenue SW. cc: File n D D r n - J o 0 1 u a - oci w4v) W L3.E 0 LL i 0 j �0 Z(-5 OWLL- i u ®c lYd 86Z 610Z/SZ/6 d6uas b p-61-lrpy- looyjs .Goluarua/a ana6 ado/ sdxylvubalwlsha/ordlopd 6uuaaudua pd1lalapllsy-po1j' Curb ra m P Goometrics' Perpindicular curb ramp Gutter slope Counter slope Landing Parallel Ramp - Left or Single Parallel Ramp Right (a) Width/ Cross slope (b) Length/ Running Slope Flare Slopes 10%max (c) Width/ 1 Cross slope I;d) Length/ (Running Sloe I:e) Length/ IRunnin Slope IM Width/ ICrossslo a [h) Length/ Running Slope (i) Width/ Cross slope IRamp # 4' min/2% 15' min/8.3% f!) Lt. Rt. ('g) 2% max Im) 5% max 4' min/2% 4' min/2% 15' ma 8.3% 4' min/2% 15' max/8.3% 4' min/2% Existing -- — Ilk) — — — — -- — — — 1 Proposed — — 0.6% 2-9% 1 7.0J0.7% 8.51/1.8% 6.0'/7.7% 8.51/ZD% — -- Note: S 308th St at 4th Ave SW - SE corner • North/SaCrossing - Parallel Ramp (single on RIGHT" Existingu[h — — — — — 2 Proposed — — 1.6% 5.0% 10.0'/1.6% 8.5'/1.8% 7.0'/5.7% 8.5'/2.0% — Note: S 368th St at 3rd Ave SW- SW corner-Nvrt[V$outh Crossing - Parallul Ram 51a on LEFT} Existing — - - - - - 3 Proposed - - -1 12.3% 4.3% 9.0' 12.3% 8.51111.8% 5.0'/2.8% 8-5/1.8% 15.0' 15.0% 8.57Z05, Note: 5 308th St at 2nd SW - SW comer- North/South Crossing - Parallel Ramp Existing — — 03% 5.4% — — — — 4 IProposed I — 1 5.0'/.3% 6.5'/1.5% 7.0J6.9% 4.9'/1.9% 7.0'/7.3% 4.9J1.2% Nale: S 308th St at 1st Pt SW - SW corner - North/South Cromin - Parallel Ramp (b), (e), and (h) -These lengths can be longer. The goal is meeting the slope requirement, but you are not All curb ramps have detectable warning surfaces required to chase a grade for more than 15 feet to meet ADA guidelines. Proposed Feature Does Not Meet Guidelines engineering pllc September 25, 2019 !'rnccinalfrnccw�lk f;onmotrirc Crossing/ Crosswalk Label Ramp to Ramp Stop Controlled Maximum Running Slope 5.0% Maximum Cross Slope 2% (5% non-stop controlled) Existing Proposed Existing Proposed A 1 to NE corner No 2.9% 1.4% B 2 to NW corner No 5.0% 1.6% NOTE: RAISED CROSSWALK C 1 3 to NW corner No 4.2% 14.1% NOTE: EX Raised Crosswalk to be removed. Paving to match EX Roadway. Striping to be removed D 1 4 to NW corner I No 5.4% 0.4% NOTE: NO ROADWAY RECONSTRUCTION PLANNED Proposed Feature Does not Meet Guidelines integruTsTUAE RESUBMITTED September 25, 2019 Natalie Kamieniecki City of Federal Way 33325 8th Avenue South Federal Way, WA 98003 SEP 2 6 2019 OMMUI4m'FE WAY zoPMENT RE: File #19-100178-00-UP; TECHNICAL REVIEW LETTER #4 Lake Grove Elementary School, 303 SW 308th Street, Federal Way Integrus Project No. 21738.00 a 117 S. Main St., Suite 100 Seattle, WA98104 Dear Ms. Kamieniecki: 206.628.3137 1 office 206.628.3138 1 fax Below are written responses to your technical review letter dated August 16, 2019. A complete plan set with clouds identifying all revisions has been submitted with the written responses. Soma Chattopadhyay, Public Works —Traffic Division The Public Works Traffic Division has finished its review of the submitted materials. The following technical review items must be addressed prior to Public Works approval. 1. Raised crosswalks and curb ramps are required to be designed according to the Americans with Disabilities Act of 1990 (ADA), incorporating the City of Federal Way standards. Please submit a detailed engineering plan addressing these standards. Response: Based upon our coordination with City of Federal Way Staff and project traffic engineer, the existing raised and marked cross walk at 2nd Avenue SW will be removed and a new raised and marked crosswalk will be placed at 3rd Avenue SW. Two new speed humps will be provided; one near 1 st Avenue SW at the crest of the hill and the other just west of 4th Avenue SW along SW 308th Street. The safe route to school pedestrian route will utilize the wide shoulder along the north side of SW 308th Street between 2nd Ave SW and 3rd Ave SW to access the ADA compliant crossing at 3rd Avenue that will have a crossing guard. An 8-inch wide edge line will be placed between 2nd Avenue and 3rd Avenue with "No Parking" signs to provide additional pedestrian safety in this zone. Additionally, a new ADA ramp at 1 st Avenue SW will be added to route pedestrians east of 2nd to the sidewalk along the south side of 308th. A ramp on the south side of SW 308th on the west margin of 2nd Ave SW is still proposed but will have a MEF designation. See attached MEF Documentation. 2. Please submit a streetlight engineering plan that meets the City of Federal Way streetlight standard. Streetlights will be required on the entire school frontage. Response: Response submitted to the City of Federal Way on 8/26/2019. integruisiUHE Ms. Natalie Kamieniecki Page 2 September 25, 2019 3. With regards to street parking, please depict how the required sight distance for entry and exit points from the school is met. The parking restriction signs must be installed before school opens. Response: Response submitted to the City of Federal Way on 8/26/2019. 4. Please depict a clear pedestrian path through the south gate (Type 5 pedestrian swing gate) to the school building. Response: Response submitted to the City of Federal Way on 8/26/2019. 5. In the second row of parking stalls, please relocate the two southwest parking stalls which are conflicting with the school bus turning radius. Response: Response submitted to the City of Federal Way on 8/26/2019. Please feel free to contact me if you have any questions or further clarifications. Sincerely, Sam Schafer, AIA Project Manager INTEGRUS ARCHITECTURE, P.S. Documents: Resubmittal Drawings Bus Turning Exhibit PC: Natalie Kamieniecki, City of Federal Way, Associate Planner Ray Vefik, Federal Way Public Schools MEMORANDUM RESUBMITTED SEP 2 G 2019 CFrY OF FEDERAL WAY COMMIJVY DEVELONENT DATE: September 25, 2019 TO: Ray Vefik, PE, Capital Projects Manager CC: Casey Moore, Project Manager FWPS Support Services Center FROM: Michael J. Read, PE, Principal TEN W � TENW Transporlation Engineering NorlhWest 50NATfy C.r�� } 33235 ,C: j •.• S T ��,.•• �� e Z EXPIRES 2 / 28 t 2021 SUBJECT: Federal Way School District - Lake Grove Elementary School Traffic Impact Analysis TENW Project No. 3623-3 This memorandum summarizes a traffic impact analysis for the proposed renovation of Federal Way School District's Lake Grove Elementary School located at 303 SW 308th Street in Federal Way, WA. This memo includes a project description, a description of existing transportation conditions within the immediate site vicinity, methodology used to derive the trip generation estimate, trip distribution, traffic operational analysis of key off -site intersections and site driveway intersections under cumulative impacts, and identification of any transportation mitigation measures to offset traffic impacts. Project Description The proposed renovation of Federal Way School District's Lake Grove Elementary School is located at 303 SW 3081h Street in Federal Way, WA. A project site vicinity map is shown in Figure 1 . For the purposes of this analysis, year 2020 was the horizon year assumed to evaluate cumulative traffic impacts. The existing gross floor area built at the Lake Grove Elementary School comprises of approximately 51,238 square -feet including the main building and portable structures] and serves approximately 450 students. The proposed gross floor area of the new school is approximately 65,825 square -feet with a student capacity to serve up to 600 students. Therefore, there would be a net increase of approximately 14,587 square -feet and 150 students in student -capacity with the proposed renovation. Transportation Planning I Design I Traffic Impact & Operations PO Box 65254, Seattle, WA 98155 1 Office (206) 361-7333 Federal Way School District - Lake Grove Elementary School 303 SW 3081h St, Federal Way, WA Traffic Impact Analysis � � VSW 304th St S 304th 5t � S 304th PI 1 S 305th St S 3051h $t N a) > ¢ S 306th St ^ Q> ¢> > a s > yr > > LO Q ¢ v) S 307th Sti SW 308th St V30$fh St V) FFLake Grove � Elementary 3> School v, ¢ Q W L S1-309th St ao ^ Ct SW 310th PI G y a 5W 31lY+SI S 312th St a) SW 313ih Ct SW 313th St (Not to Scale) Federal Way V T E �W Figure 1 School District Project Site Vicinity Lake Grove Elementary School Existing Conditions TTENW page 2 September 25, 2019 iFederal Way School District - Lake Grove Elementary School 303 SW 3081" St, Federal Way, WA Traffic Impact Analysis Existing site access is provided via four site driveways onto SW 308ih Street. Proposed site access would be provided via two existing site driveways onto SW 308th Street, one accessing the west parking lot and the other accessing the east parking lot. These site driveways would be converted to full access site driveways. The existing two center site driveways onto SW 308th Street would be removed. Student pick-up/drop off would continue to be provided via the west parking lot. Bus pick-up and drop-off would be relocated to the east parking lot. The renovated west parking lot would provide 34 parking stalls and the renovated east parking lot would provide 26 staff parking stalls. As part of the project, roadway frontage improvements would be required along SW 308th Street. A conceptual site plan of the project is illustrated in Figure 2. Existing Transportation Conditions This section includes an inventory of existing roadway conditions, key intersections in the site vicinity, existing daily and peak hour traffic volumes, intersection levels of service, nonmotorized facilities and planned roadway improvements. Roadway Conditions The following paragraphs describe existing arterial roadways that would be used for site access. Roadway characteristics are described in terms of number of lanes, posted speed limits, shoulder types and widths. SW 308th Street is a two-lane minor collector. Adjacent to Lake Grove Elementary School, the roadway travel width is approximately 21 feet with 3- to 4-foot paved shoulders on the north side of the street and 9- to 10-foot paved shoulders with 1 1- to 13-foot gravel shoulders on the south side of the street. West of 4th Avenue SW / West Driveway, 7-foot paved shoulders are provided on the north side of the street, and 1 /2—foot paved shoulders, curb and a 5-1 /2 foot paved pedestrian pathway are provided on the south side of the street. East of 2nd Avenue SW, the roadway consists of approximate 8-foot paved shoulders on the north side of the street, an approximate pavement width of 34-foot with curb and a 7-foot paved pedestrian pathway on the south side of the street. The speed limit is posted at 25 mph with a 20 mph flashing posted speed during school arrival and dismissal periods. A vehicle speed survey was conducted in ,June 2018 by lclax Data Solutions on SW 308th Street between 1st PI SW and 2nd Avenue SW (further west of the East Driveway for Lake Grove Elementary SchoolJ, with a 50th percentile speed of 21 mph, 85th percentile speed of 25 mph and a 95th percentile speed of 29 mph in the eastbound direction, and in the westbound direction, a 50th percentile speed of 22 mph, 89h percentile speed of 26 mph and a 95th percentile speed of 29 mph. gth Avenue SW is a two-lane unchannelized minor collector. The total pavement width is approximately 26 feet west of SW 308th Street with approximate 4-foot shoulders on the south side of the street and open ditches on both sides the street. East of SW 308th Street, the total pavement width is approximately 23 feet with 6- to 7-foot gravel shoulders on both sides the street. The posted speed limit is 25 mph. %O TEN W page 3 September 25, 2019 Federal Way School District - Lake Grove Elementary School 303 SW 30811 St, Federal Way, WA Traffic Impact Analysis I `i iO 'o l; _ I I I I I I � I D r s � .00 1 I J 0� CM (Not to Scole) Federal Way �Figure 2 School District T E N W Conceptual Site Plan Lake Grove Elementary School Traffic Impact Analysis TTENW page 4 September 25, 2019 Federal Way School District - Lake Grove Elementary School 303 SW 3081h St, Federal Way, WA Traffic Impact Analysis 4th Avenue SW is a two-lane unchannelized roadway with 7-foot gravel shoulders on the west side of the street and 4-foot gravel shoulders on the south side of the street. The total pavement width is approximately 25 feet. The speed limit is posted at 25 mph. 3rd Avenue SW is a two-lane unchannelized roadway with 8- to 1 1-foot gravel shoulders on the west side of the street and approximate 7-foot gravel shoulders with open ditches on the south side of the street. The total pavement width is approximately 26 feet. The posted speed limit is 25 mph. 1 St Avenue S is a minor arterial with two lanes north of SW 308th Street and two lanes with a two-way center left -turn lane south of SW 308th Street. North of SW 308th Street, the pavement width between shoulder lines is approximately 30 feet with a 13-foot travel lane in the southbound direction, and 1-foot paved shoulders on the west side of the street and 3-foot paved shoulders on the east side of the street. South of SW 3086 Street, the pavement width between shoulder lines is approximately 35 feet with 10-foot paved shoulders and curbs, gutters and sidewalks on the west side of the street and 4-foot paved shoulders on the east side of the street. The speed limit is posted at 25 mph. Traffic Study Intersections The following intersections were analyzed during the AM and PM peak hour: l . SW 308th Street / 8ih Avenue SW 2. SW 308th Street / 4th Avenue SW / West Driveway 3. SW 308th Street / West Driveway - 2 4. SW 308th Street / 3rd Avenue SW / Center Driveway 5. SW 308th Street / East Driveway 6. SW 308th Street / 1 st Avenue S Existing Daily and Peak Hour Traffic Volumes Peak hour traffic volumes represent the highest hourly volume of vehicles passing through an intersection during a typical 7-9 AM and 4-6 PM weekday peak period. Average weekday daily traffic counts and peak period turning movement counts were conducted during the AM and PM peak hour in ,June 2018 by lclax Data Solutions during the 7-9 AM, 4-6 PM periods at off -site study intersections and 2-6 PM period at school driveway intersections. Figure 3 summarizes existing daily, AM and PM peak period turning movements at the study intersections. Traffic counts are provided in Attachment A. During the p.m. peak hour, please note that off -site study intersections (#1 and #6) were analyzed based upon the weekday p.m. peak hour of adjacent street traffic (typical 4 to 6 p.m. peak period) and driveway study intersections (#2, #3, #4 and #5) were analyzed based upon the weekday p.m. peak hour of the generator for the proposed project (peak dismissal time for one hour between 3:00 to 4:15 p.m. depending upon the site driveway intersection). V TEN W page 5 September 25, 2019 y N N Q Q L _t oo r, SW 3NTh SI14th Ave SKI �. West D Wewa I11 l01 (51 3 X— 4 11) 7 3 13 < <— 50(20) 2() j0J 4 I t I is1)48 21 5 13 S (18) 11: (121 l0J (8) S 307th S1 SW 3DBth St/8th Ave SW 419) 121 f291 f9) 32 t— 12 (9) t5 .I6 i t a — ° "I YJ In�II 1113� 3) t I 125)13 —1► K 7 30 4 (1) 8 (01 (281 124) nirt S1 SW 313th Ct I :;�I V) F 53 (281 11 (8) (44) 65 —1 a 1 1 (2017 (0) NJ Federal Way School District - Lake Grove Elementary School 303 SW 30811 St, Federal Way, WA Traffic Impact Analysis 141 (3i 16) 11 141 c f 47 (36) 1 25 (35) SW 3081h St/East Driveway w In u (0) 9� t r F 73 (68) (20) 52 --� 9 0 14 s (19) 17� (7) (1) (18)..: ...a... ` y 142) 82 12 46 N GS > 3 = (4) i36) cq v f f 5 308th St Lake Grove Elementary School SW 313tHSt SW 308th St/Ist Ave S 2 (3) II II 12201 (4) 8 370 7 <— 4 (3) 30 (251 110) 13 Is; 2 ;- 45 299 33 06161 nk ' (621 12131 1191 S 312th St Legend 45 PM Peak Hour Traffic Volumes (65) AM Peak Hour Traffic Volumes 5,000 Daily Traffic Volumes I1401 :oscote] Federal Way � T E NW2018 Figure 3 school District Existing Daily, AM & PM Lake Grove Elementary Peak Hour Traffic Volumes Schaal Traffic Impact Analysis TTENW page 6 September 25, 2019 Federal Way School District - Lake Grove Elementary School 303 SW 3081h St, Federal Way, WA Traffic Impact Analysis Existing Intersection Levels of Service Intersection levels of service (LOS) analyses were conducted at the study intersections during the weekday AM and PM peak hour of 2018 existing conditions. LOS refers to the degree of congestion on a roadway or intersection. It is a measure of vehicle operating speed, travel time, travel delays, and driving comfort. A letter scale from A to F generally describes LOS. At signalized intersections, LOS A represents free -flow conditions -motorists experience little or no delays, and LOS F represents forced -flow conditions -motorists experience an average delay in excess of 80 seconds per vehicle. The LOS reported for signalized intersections represents the average control delay per vehicle entering the intersection. The LOS reported at stop -controlled intersections is also based on the average control delay sec/veh) and is reported for each movement. Therefore, the reported LOS at unsignalized intersections does not represent a measure of the overall operations of the intersection. LOS calculations for both signalized and stop -controlled intersections were calculated using the methodologies and procedures outlined in the 2010 Highway Capacity Manua/ �HCMJ, Special Report 209, Transportation Research Board (TRB�. Table 1 outlines the LOS criteria for signalized and unsignalized intersections based on these methodologies. The City of Federal Way's LOS standard is a v/c ratio of 1 .2 for signalized intersections and 1 .0 for unsignalized intersections. Existing AM and PM peak hour LOS analyses are summarized in Tables 2 and 3. As shown, all intersections operate at LOS C or better with a v/c ratio under 1 .0 during the AM and PM peak hour under 2018 existing conditions. Detailed LOS summary worksheets are included in Attachment B. Table 1 Level of Service Criteria for Intersections Signalized Intersection Unsignalized Intersection Level of Service Average Delay Range sec Delay Ran a (sec) A < 10 <_ 10 B >10to<_20 >10fo<_15 c >20to_<35 > 15to<_25 D > 35 to:- 55 > 25 to <_ 35 E >55to<80 >35to<_50 F > 80 > 50 Source: "Highway Capacity Manual", Special Report 209, Transportation Research Board, 2010. %9 TEN W page 7 September 25, 2019 Federal Way School District - Lake Grove Elementary School 303 SW 3081h St, Federal Way, WA Traffic Impact Analysis Table 2 2018 Existing AM Peak Intersection Levels of Service Study Intersection LOS Delay sec V/C Ratio Unsignakzed Intersections #1 -SW 308th St / 8th Ave SW AWS A 7.4 0.23 #2 - SW 308th St / 4th Ave SW / West Dr EB Left -- -- WB Left A 7.6 0.01 NB A 9.9 0.05 SB B 10.1 0.02 #3 - SW 308th St / West Driveway - 2 WB Left A 7.5 0.01 #4 - SW 308th St / 3rd Ave SW / Center Dr WB Left A 7.6 0.05 NB B 10.1 0.07 SB B 11.3 0.02 #5 - SW 308th St / East Driveway NB A 9.3 0.08 #6 - SW 308th St / 1 st Ave S EB B 10.9 0.13 WB C 18.0 0.11 NB Left A 7.9 0.05 SB Left A 7.8 0.00 Source: "Highway Capacity Manual", Special Report 209, Transportation Research Board, 2010 Table 3 2018 Existing PM Peak Intersection Levels of Service _Sturdy Intersection LOS Delay (sec) V/C Ratio U i nakzed intersections + ^ #1 -SW 308th St / 8th Ave SW AWS I A 7.3 0.14 #2-SW 308th St / 4th Ave SW / West Dr EB Left Ij A 7.8 0.00 #3 - SW 308th St / West Driveway - 2 #4 - SW 308th St / 3rd Ave SW / Center Dr #5 - SW 308th St / East Driveway #6 - SW 308th St / 1 sl Ave S WB Left NB SB WB Left NB EB Left WB Left NB SB NB EB WB NB Left SB Left A 8.1 0.00 B 13.3 0.10 B 12.8 0.06 A 7.9 0.01 B 10.8 0.02 A 7.7 0.01 A 8.0 0.03 B 12.6 0.06 B 12.0 0.03 B 10.0 0.10 B 12.0 0.13 C 24.2 0.17 A 8.2 0.04 A 8.0 0.01 Source: "Highway Capacity Manual", Special Report 209, Transportation Research Board, 2010. TTENW page 8 September 25, 2019 Federal Way School District - Lake Grove Elementary School 303 SW 3081h St, Federal Way, WA Traffic Impact Analysis Nonmotorized Facilities Paved pedestrian pathways are located on SW 308th Street, west of 4ih Avenue SW and east of the East Driveway. Marked crosswalks are located along all school study intersections of SW 308th Street at the north, south and east legs of the 4th Avenue SW / West Driveway, the south leg of the West Driveway - 2, and the north and west legs of 3rd Avenue SW / Center Driveway. Speed bump crosswalks are provided on SW 308th Street on the east leg of its intersection with 4th Avenue SW / West Driveway and on the west side of its intersection with 2nd Avenue SW. Planned Transportation Improvements No planned transportation capacity improvements impacting Lake Grove Elementary School based were identified in the City of Federal Way's 20182023 Transportation Improvement Program. Traffic Impact Analysis The following section describes projected future baseline traffic growth, new trips generated by the proposed development, distribution and assignment of new project trips, intersection level of service and daily traffic volume impacts, nonmotorized impacts, site access, safety and circulation issues, and identification of transportation mitigation to offset impacts. 2020 Baseline Traffic Volumes Full buildout of the project is anticipated for the year 2020. Existing traffic counts estimated in 2018 were factored by 3 percent per year to estimate daily, a.m. peak hour and p.m. peak hour traffic volumes under 2020 baseline conditions without the project. Future traffic volume estimates are provided in Attachment C. Project Trip Generation Per published trip generation rates within the Trip Generation Manual, 101h Edition, 2017, Institute of Transportation Engineers (ITEj, for Land Use Code 520 - Elementary School, there is no correlative basis to derive vehicle trip generation based on changes in gross floor area, but better evidence of correlation on daily trips and significantly higher number of studies based on student population. Based on TENW's extensive experience in reviewing K-12, private schools, and numerous community colleges throughout the Pacific Northwest, the best correlative predictor of increase traffic demand is student enrollment at school institutions. As such, as shown in Table 4, based on the net increase of approximately 150 students the net increase in vehicle trips on a daily basis is estimated at 284 daily trips, with approximately 98 new trips generated during peak arrival periods (AM Peak Hour of Generator), 51 new trips generated during peak dismissal periods (PM Peak Hour of Generatorj, and 26 new vehicle trips during the p.m. peak hour of adjacent street traffic (i.e., the worse -case scenarioj. %9 TEN W page 9 September 25, 2019 Federal Way School District - Lake Grove Elementary School 303 SW 3081h St, Federal Way, WA Traffic Impact Analysis Table 4 Lake Grove Elementary School Trip Generation Summary Time Period In out Total Weekday Daily 142 142 284 Weekday AM Peak Hour of Generator 53 45 98 Weekday PM Peak Hour of Generator 23 28 51 Weekday PM Peak Hour of Adjacent Street Traffic 12 14 26 Source: ITE Trip Generation Manual, 10'h Edition, 2017. Trip Distribution and Assignment Project trip distribution is based upon traffic counts that were conducted in ,June 2018 during the a.m. and p.m. peak hour at all off -site and site driveway study intersections. Generally, distribution and assignment of project trips were assumed as follows: ➢ 29 percent north via 8th Avenue SW, 6th Avenue SW, 3rd Avenue SW, 2nd Avenue SW and 1st Avenue SW; ➢ 48 percent south via 8th Avenue SW, 7th Place SW and 1s1 Avenue SW; ➢ 20 percent west via SW 308th Street; ands ➢ 3 percent east via SW 308th Street. Figure 4 illustrates trip distribution and Figure 5 shows the daily, a.m. peak hour and p.m. peak hour trip assignment at the study intersections during the 2020 horizon year. Figures 6 and 7 summarize daily, a.m. peak hour and p.m. peak hour traffic volume impacts of the proposed renovation of Federal Way School District's Lake Grove Elementary School project in 2020. Intersection Level of Service and Daily Traffic Volume Impacts Tables 5 and 6 summarize level of service impacts in 2020 assuming full buildout of the proposed renovation of Federal Way School District's Lake Grove Elementary School project. As shown, all study intersections are projected to operate at LOS C or better with a v/c ratio under 1.0 during the a.m. peak hour and at LOS C or better with a v/c ratio under 1.0 during the p.m. peak hour with or without the project in 2020. Detailed LOS summary worksheets are included in Attachment B. Please note that site driveway Intersections #3 and #5 will be removed as part of the proposed project and were therefore, not analyzed under 2020 future conditions. Daily traffic volumes would increase by about 140 vehicles with the project in 2020 on SW 308th Street east of the school. TTENW page 10 September 25, 2019 Federal Way School District - Lake Grove Elementary School 303 SW 308'h St, Federal Way, WA Traffic Impact Analysis TENWIoft Figure 4 Project Trip Distribution 9 INOI 10 ScOle3 Federal Way School District Lake Grove Elementary School Traffic Impact TTENW page 1 1 September 25, 2019 S304th St ��' S 305th S 306th St S 307th St 3 31 N N (D a) ¢ ¢ L L CO r_1 1 SW 308th St/4th Ave SWJ W @51 z (C) F 4 (7) `- 3 (71 3R t II8 (8)3-0 1 4 (I6) 7 (141 11) 161 SW 308th St II SW 308th St/8th Ave SW 1 (5) 151 F 3 (9) 1 (5) Svc 305m r 3 (11J2� 15) O � t ►] Federal Way School District- Lake Grove Elementary School 303 SW 30811 St, Federal Way, WA Traffic Impact Analysis N d L SW 304th St I / Sw 308th St/3rd Ave/E Dwy 04th PI (01 5th St 2 F 1 (5) J 5 (21) �h' 3YN hi LI t30S 15) 2 6 (8) 2 (71 118) N N ¢ ¢ ¢ ^I 140 11 N Lake Grove Elementary School SW : N YJ Jna l]11` G SW 313th1St S!I SW 308th St/Ist Ave S 161 E-0(2) JI i S ijl8rn tr Sv+30.9m Sr (51�� (1)0� w 4 116) 5 --X (19) dim S 312th St N a Legend 45 PM Peak Hour Traffic Volumes (65) AM Peak Hour Traffic Volumes 5,000 Daily Traffic Volumes (Not 10Scalel Federal Way Figure 5 School District `� T E N W Daily, AM & PM Lake Grove Elementary Peak Hour Trip Assignment School Traffic Impact Analysis IVTENW page 12 September 25, 2019 C_ N tv Q L CO S S 305th St N Q S 306th St S 307th Si Sw 3081h S1Mfh Ave Swl W est Drivewu I 2 5 < F21(281 JI 10 • �� SY.6nth 1 �R 01 0-4I t r (621 54 (76) 19 i 138, (2) { 2 1 SW 308111 St ( + 3 N Y SW 3081h St/8th Ave SW 10 (14) 1151 2 31 1110� F 10(19) i s v(�18)o-�J�� (37) 27 —� ' 0 30 25 1 —y 1311 Federal Way School District - Lake Grove Elementary School 303 SW 30811 St, Federal Way, WA Traffic Impact Analysis a a- 3: m a xl L L�l'f ❑ C0 arh St a J SW 304th St S 305th St SW 308th St/3rd Ave/E 0" �a (0 1 4 <-111(116J 37 (211 sx ]Oem sr (1)0� (139) 134 7 19 (8) 20 (111 1 118) f 4th PI N Q II 1,490 N (1,630) 6� Lake Grove ' Elementary School SW 308Ih St/ I sl Ave S 1*— 3 5t. 1181 ! 2 233 4 F 3 151 SW J 1, 27 � 3U'm Sr 611i� (7)5 —i 66 226 20 (86) 70� Ie41 S 312th St N N Q LSW St _ SW 3T 3th Ct Legend 45 Peak Hour Traffic Volumes Without Project (65) Peak Hour Traffic Volumes With Project 5,000 Daily Traffic Volumes Without Project 1.(5,000) Daily Traffic Volumes With Project iNot to scolel Federal Way Figure 6 School District TE N W 2020 Daily and AM Peak Lake Grove Elementary Hour Traffic Volume Impacts School Traffic Impact Analysis TTENW page 13 September 25, 2019 Federal Way School District - Lake Grove Elementary School 303 SW 3081h St, Federal Way, WA Traffic Impact Analysis N N Q a " SW 304th St LY 308th 5t/3rd Ave/E ar..,s• S 3043h St. 04th PI 12 S 305th St 'ol 1 4 �— 90 (91) 27 (4) S 305th'St '" " d (11) 10 s t a 12001199 � � 10 IS S 306th St n 3 `� (2) 1e� (21 1 (sl to 3 N d a) Q Q C �� Q CL U 1� C S 307th St �_ j IN J STh S'308th Si Lake Grove Elementary School St L SW n y a �r $� 31Zir S1 S 312th St IN M I Q SW 313Ih Ct� LSWSt Legend 45 Peak Hour Traffic Volumes Without Project (65) Peak Hour Traffic Volumes With Project (Not to Scale) Federal Way Figure 7 School District 1�9 T E NW 2020 PM Peak Hour Lake Grove Elementary Traffic Volume Impacts School Traffic Impact Analysis SW 30B1h Sr141h Ave 5sv! wesr olive way r � 4 7 (31 7 14 � t— S3 (57) i� � tw43+tic:n ar (54J 51 —� �� 22 5 14 (47i 15 � E (531 161 �i9li SW 30Bth St/Bth Ave SW � 4lbi b 7 34 15J E— 13(Ibl llbl 14—> >� a 7 32 4 I51 SW 308th St/ I st Ave S 2 393 7 t— 4 (Si fB 32 llr _• 115114� R .. 1 i317'--' � 48 317 3S f7t71 152J %9 TEN W page 14 September 25, 2019 Federal Way School District - Lake Grove Elementary School 303 SW 30811 St, Federal Way, WA Traffic Impact Analysis Table 5 2020 AM Peak Intersection Level of Service Impacts 2020 Without Project 2020 With Project Delay V/c Delay V/c St«dV Intersection LOS Isecj Ratio LOS sec Ratio Unsignolized Intersections #1 -SW 3081h St / 81h Ave SW AWS A 7.4 0.24 A 7.6 0.25 #2 - SW 3081h St / 41h Ave SW / West Dr EB Left -- - -- -- - WB Left A 7.6 0.01 A 8.1 0.09 NB B 10.0 0.05 B 13.7 0.33 SB B 10.2 0.02 C 15.3 0.04 #4 - SW 308th St /3rd Ave/ East Drive WB Left -- - - A 7.8 0.08 N B -- -- B 12.7 0.11 SB -- -- - B 12.5 0.02 #6-SW3081hSt/1s1 Ave S EB B 11.1 0.14 B 11.9 0.18 WB C 19.4 0.12 C 21.5 0.18 NB Left A 8.0 0.06 A 8.0 0.07 SB Left A 7.8 0.00 A 7.8 0.00 Source: "Highway Capacity Manual", Special Report 209, Transportation Research Board, 2010 Table b 2020 PM Peak Intersection Level of Service Impacts Unsr n fized intersections. #1 -SW 308th St / 81h Ave SW AWS #2 - SW 308th St / 4th Ave SW / West Dr EB Left WB Left NB SB #4 - SW 3081h St /3rd Ave/ East Drive WB Left NB SB #6 - SW 308th St / 1 s1 Ave S EB WB NB Left SB Left Source: "Highway Capacity Manual", Special Report 209, Tra Nonmotorized Impacts 2020 Without Project 2020 With Project Delay V/c Delay V/c I M tst�r-1 Ratio LOS fs.ecl Ratio A 7.3 0.14 A 7.3 0.14 A 7.8 0.00 A 7.9 0.00 A 8.1 0.00 A 8.2 0.02 B 13.4 0.11 C 21.3 0.52 B 13.0 0.06 C 19.0 0.12 -- -- -- A 8.1 0.01 -- - -� B 12.2 0.02 _.. _- B 11.7 0.03 B 12.4 0.15 B 12.6 0.16 C 26.9 0.19 D 28.0 0.21 A 8.3 0.04 A 8.3 0.05 A 8.0 0.01 A 8.0 0.01 nsportation Research Board, 2010 As part of the proposed project, raised sidewalks would be provided along the school property frontage on SW 308th Street. Marked crosswalks and speed bump crosswalks on TTENW page 15 September 25, 2019 Federal Way School District - Lake Grove Elementary School 303 SW 30811 St, Federal Way, WA Traffic Impact Analysis SW 308ih Street along the school property frontage would remain, with the exception of the speed hump/marked crosswalk at 2nd Avenue SW. As this could not be reconfigured to meet full ADA requirements, it would be removed as part of the project and removed from the Safe Walk Route school district map. Site Access and Safety Issues Existing site access is provided via four site driveways onto SW 3081h Street. Proposed site access would be provided via two existing site driveways onto SW 308th Street, one accessing the west parking lot and the other accessing the east parking lot. These site driveways would be converted to full access site driveways. All site driveway intersections would operate at LOS B or better with a v/c ratio under 1.0 during the a.m. peak hour and at LOS C or better with a v/c ratio under 1 .0 during the p.m. peak hour with or without the project in 2020.. Two existing site driveways onto SW 308th Street would be removed. Student pick-up/drop off would continue to be provided via the west parking lot. Bus pick-up and drop-off would be relocated to the east parking lot and remain as a staff -only parking lot. The renovated west parking lot would provide 34 parking stalls and the renovated ,east parking lot would provide 26 staff parking stalls. Within the west parking lot, site circulation would travel one-way southbound and then northbound, counterclockwise in a loop. Within the east parking lot, traffic circulation would be provided two ways within the parking lot. Site circulation within these parking lots is shown in Figure 2. As part of the project, roadway frontage improvements to include curb, gutter, sidewalk and landscaping would be required along SW 308th Street, which could also require right-of-way dedication. Queuing Analysis and Student Pick-Up/Drop-Off Loading Areas There are no queuing issues during the AM peak hour as vehicle arrivals and departures are staggered in the morning when students are dropped off before school begins. Existing queues related to school pick-up/drop-offs on SW 308ih Street were observed to occur during the PM peak hour at its intersection with 3rd Avenue SW / Existing Center Driveway (Intersection #4j. Existing maximum queue lengths were observed to be 1 1 vehicles (about 5 to 6 vehicles in both directions) during the PM peak hour at this site driveway onto SW 308th Street. As part of the proposed redevelopment, this driveway would be removed. Student pick-up/drop off would be designated to be provided in the west parking lot during school arrival and dismissal times with access via Intersection #2 — SW 308th Street / 4th Avenue SW / West Driveway. Bus pick-up and drop-off would be relocated to the east parking lot where the existing driveway onto SW 308th Street and would be converted to a full -access driveway (Intersection #5j. There is approximately 450 feet of on -site storage for queued vehicles in the west and east parking lots at the existing school. With the additional 11 vehicles queued onto SW 308ih Street, the total peak queue length is approximately 680 feet (95th—percentile based on GI) TEN W page 16 September 25, 2019 Federal Way School District - Lake Grove Elementary School 303 SW 30811 St, Federal Way, WA Traffic Impact Analysis maximum queues that last for only several minutes). With the proposed development, an additional demand of 3 vehicles would increase this to 740 feet. The proposed on -site queue storage length is proposed at approximately 840 feet, providing queue storage for approximately 42 vehicles. This length is provided via a dual queue lane within the 3-lane parking aisle width to accommodate additional vehicle queuing storage during peak dismissal periods beyond the curbside pick-up area. Maximum queuing on -site is most likely to occur once during an approximate 5-minute period (consistent with existing conditions) at the site driveway intersection during the PM peak hour while vehicles wait for school to be dismissed. Once school is dismissed and vehicles begin egressing the driveway intersection, traffic flow quickly returns back to "normal/optimal" conditions on SW 308th Street. It should be noted that 95th percentile queue lengths for all stop -controlled movements at the site driveway intersections onto SW 308th Street estimate queue lengths to be less than 25 feet or 1 vehicle during the AM and PM peak hour with the project in 2020. School Safe Walk Route Figure 8 shows safe walk routes within a 1-mile radius of Lake Grove Elementary School. There are no mitigation measures as students would be able to safely travel along sidewalks on the south side of SW 308" Street, a wide paved shoulder on the north side of SW 308th Street, and access the school either by the sidewalk entrance located in between Ott' Avenue SW/West Driveway and 3rd Avenue SW or travel along the east side of the East Driveway where crossing guards are stationed. Project Mitigation A review of traffic impacts to intersection levels of service, site access, and circulation issues was conducted in association with the Lake Grove Elementary School in Federal Way, WA. The following mitigation measures are recommended to reduce or eliminate project impacts: ➢ The City of Federal Way assesses a traffic impact fee rate of $2.00 per new square - foot of floor area for elementary schools (2018 Federal Way Impact Fee and Components). Based upon a net increase of 14,587 square feet (51,238 square feet existing and 65,825 square feet futurel, Lake Grove Elementary School would be assessed a traffic impact fee of $29,174. The final fee would be determined at building permit issuance. ➢ The applicant would be required to construct the necessary frontage improvements along SW 3081h Street to include curb, gutter, sidewalk and landscaping, which could also include right-of-way donation. As parr of these improvements, the existing speed hump/marked crosswalk of SW 3081h Street and 2nd Avenue SW would be removed given it could not be reconfigured to meet current ADA standards. If you have any questions regarding the information presented in this memo, please call me at (206) 361-7333 x 101 or mikereadQtenw.com. GeTEN W page 17 September 25, 2019 Federal Way School District— Lake Grove Elementary School 303 SW 3081h St, Federal Way, WA Traffic Impact Analysis j - e T,..1M9 �•• dl i•sr.0 ^r Owe Ad•- t eueRN Ebrrer.ery School � Q 1. �}..y.•u•wyry r.•� i •- S"MCOM De 3. 3 r' Psi SOW 0 • �• ^ ..�A1104....... ................r� Nrr - }* 'lake Grove: %RROR LAN .. .Elemento ry • : S.. Sehgol i r^*-:`. ➢ , {:, ���.ii{isS',�.���iii{i4:ii::S:7:::::::.::S::aSi::::.:..{.;SSS` -ter, ,�{fi: -- � r+.. s•A^#l�Vi O ri.i-�� O _. AVrer l9ke© M. tt • • F.W11—CMire II v T 1 Qm. -•. _ aN] a sv V swss a 93�ftA Jvxr*y chardi S~Sawn y HIN Mennr.0 6 s.^ R - i y "hnW. r �'�,{ y Celehreum C.mer i s me Cem - • Aperenent. mm.tz - Legends a ^� �`-^'''" rJ.mrnrn SrT+a7� Q - • • * • • +'�a= Ra��c. S�dewcl: or shoulder with Raised Cult ^•�^^ °" ^ € ...... WadkRoute: Shoulder Only ..4.■1 Walk Route: No Shoulder - •..•••• Crosswalk Cro:�n�, G��rdls) stop Traffic Signal School Speed Tone Federal Way V9- TENW Figure 8 School District School Safe Walk Route Lake Grove Elementary School Traffic try po ^ • A n:11 "(' I M-4 VV page 18 September 25, 2019 ATTACHMENT A Daily, AM & PM Peak Traffic Counts T TENW www.idaxdata.com 8TH "E SW • SW 308TH ST Date: Wed, Jun 13, 2018 N Peak Hour Count Period: 7:00 AM to 9:00 AM Peak Hour: 8:00 AM to 9:00 AM 0 00 � M LU Jco A I ` `SW 308TH ST0� �/ g ...> 1 TEV: 150 +"� 9 o o 1 27 25 PHF: 0.75 13 — > 1 C7 0 58 SW 308TH S !F (1cY 4o Q- 0 [ g ` t 0 o ao N U N o LU 7 HV %: PHF C = EB 3 7% 0.56 y nn nn °O WB 3.2% 055 VV M N N NB 7.7% 068 SB 2 5% 0.77 TOTAL 4.7% 075 'Two -Hour Count Summaries Interval SW 308TH ST SW 308TH ST 8TH AVE SW 8TH AVE SW Eastbound Westbound Northbound Southbound Start 15-min Total Rolling One Hour LIT LT TH RT LIT LT TH RT LIT LT TH RT LIT LT TH RT 7:00 AM 0 0 1 2 0 1 0 0 0 0 4 1 0 1 3 0 13 0 7:15 AM 0 1 2 2 0 2 1 0 0 0 6 0 0 1 7 1 23 0 7:30 AM 0 1 3 0 0 1 4 0 0 0 5 5 0 0 14 0 33 0 7:45 AM 0 1 10 0 0 3 3 0 0 0 7 5 0 1 10 2 42 111 8:00 AM 0 0 2 0 0 3 3 1 0 0 8 3 0 0 8 0 28 126 8:15 AM 0 0 4 0 0 0 1 0 0 0 4 1 0 1 11 1 23 126 8:30 AM 0 1 10 1 0 2 2 5 0 0 9 10 0 5 3 1 49 142 8.45 AM 0 0 9 0 U a 3 3 0 0 7 10 0 3 7 0 50 150 Count Total 0 4 41 5 0 20 17 9 0 0 50 35 0 12 63 5 261 0 Peak Hour 0 1 25 1 0 13 9 9 1 0 0 28 24 0 9 29 2 150 0 Note: Two-hour count summary volumes include heavy vehicles but exclude bicycles in overall count. Interval Heavy Vehicle Totals Bicycles Pedestrians (Crossing Leg) EB WB NB SB Total EB WB NB SB Total East West North South Total Start 7:00 AM 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 7:15AM 0 0 0 1 1 1 0 0 0 1 0 0 0 0 0 7:30 AM 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 7:45 AM 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 8:00 AM 0 0 0 0 0 0 1 0 0 1 0 0 0 0 0 8:15AM 1 1 1 0 3 0 0 0 0 0 0 0 0 0 0 8:30 AM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8:45AM 0 0 3 1 4 0 0 0 0 0 0 0 0 0 0 Count Total 3 1 4 2 10 1 1 0 0 2 0 0 0 1 1 Peak Hour 1 1 4 1 7 1 0 1 0 0 1 0 0 0 0 0 Mark Skaggs: (425) 250-0777 mark.skaggs@idaxdata.com www.idaxdata.com LAKE GROVE ES EAST STAFF LOT kta�' SW 308TH ST 024 Date: Wed, Jun 13, 2018 N Peak Hour Count Period: 7:00 AM to 9:00 AM Peak Hour: 8:00 AM to 9:00 AM � > LL nnr U�V Q 2 F o u> CD0 1 ..10 20 0 TEV: 123 1;,..,;_ 20 28 0 f - ot > 51 R PHF: 69 18 0.55 1 -- 7 l 4 0 a Q 0 0~ 4 17 - V SW 308TH ST ,n 04 o 00 CDf0� ��� _j < 0 t o w LL HV %: PHF LL w < EB 7 2% 0.58 Q WB 0.0% 0.78 oa_ N N NB 0.0% 0.33 SB 16.7% 0.75 TOTAL 4.9% 0,55 Two -Hour Count Summaries SW 308TH ST SW 308TH ST LAKE GROVE ES EAST STAFF LOT DWY 4TH AVE SW 15-min Rolling Eastbound Westbound Northbound Southbound Interval Total One Hour Start UT LT TH RT UT LT TH RT UT LT TH RT UT LT TH RT 7:00 AM 0 0 6 1 0 0 1 0 0 0 0 0 0 0 0 0 8 0 7:15AM 0 0 7 0 0 2 2 0 0 0 0 0 0 0 0 0 11 0 7:30 AM 0 1 10 1 0 2 4 0 0 0 0 0 0 0 0 1 19 0 7:45 AM 0 1 9 4 0 6 2 0 0 0 0 0 0 0 0 1 23 61 8:00 AM 0 0 5 1 0 2 4 1 0 1 0 0 0 1 0 0 15 68 8:15 AM 0 0 6 3 0 2 4 0 0 0 0 1 0 2 0 0 18 75 8:30 AM 0 0 20 4 0 0 6 0 0 1 0 2 0 0 0 1 34 90 8:45 AM 0 0 20 10 0 3 6 0 0 10 0 5 0 2 0 0 56 123 Count Total 1 0 2 83 24 0 17 29 1 0 12 0 8 0 5 0 3 184 0 Peak Hour 1 0 0 51 18 0 7 20 1 0 12 0 8 0 5 0 1 123 1 0 Note: Two-hour count summary volumes include heavy vehicles but exclude bicycles in overall count Interval Heavy Vehicle Totals Bicycles Pedestrians (Crossing Leg) Start EB WB NB SB Total EB WB NB SIB Total East West North South Total 7:00 AM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7:15AM 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 7:30 AM 0 0 0 0 0 1 0 0 0 1 0 0 0 0 0 7:45 AM 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 8:00 AM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8:15AM 1 0 0 1 2 0 0 0 0 0 2 0 0 0 2 8:30 AM 0 0 0 0 0 0 0 0 0 0 2 0 1 7 10 8:45 AM 4 0 0 0 4 0 0 0 0 0 1 0 1 10 12 Count Total 6 0 0 1 7 1 0 0 0 1 6 0 2 17 25 Peak Hour 5 0 0 1 6 0 0 0 0 0 5 0 2 17 24 Mark Skaggs: (425) 250-0777 mark skaggs@idaxdata.com www.idaxdata.com 25 LAKE GROVE ES BUS DWY SW 308TH ST e&' Date: Wed, Jun 13, 2018 N Peak Hour Count Period: 7:00 AM to 9:00 AM Peak Hour: 8:00 AM to 9:00 AM SW 308TH ST 28 28 ,- 8 36 n 0 • 0 TEV: 100 PHF: 0.66 9 c • • o 0 A� B4 44 3 0 44 0 CP 20 0 l;l SW 308TH ST 0 0 0 wr 0 p HV %: PHF O EB 9 4% 0 59 y m WB 5.6% 0.82 g w NB - - �y U N!f o SB TOTAL 8.0% 0.66 Two -Hour Count Summaries Interval SW 308TH ST SW 308TH ST LAKE GROVE ES BUS DWY 0 Eastbound Westbound Northbound Southbound Start 15-min Total Rolling One Hour UT LT TH RT UT LT TH RT UT LT TH RT UT LT TH RT 7:00 AM 0 0 6 0 0 0 1 0 0 0 0 0 0 0 0 0 7 0 7:15AM 0 0 7 0 0 1 4 0 0 0 0 0 0 0 0 0 12 0 7:30 AM 0 0 9 0 0 0 6 0 0 0 0 0 0 0 0 0 15 0 7:45 AM 0 0 10 0 0 1 8 0 0 0 0 0 0 0 0 0 19 53 8:00 AM 0 0 4 2 0 1 7 0 0 0 0 0 0 0 0 0 14 60 8:15 AM 0 0 9 1 0 2 6 0 0 0 0 0 0 0 0 0 18 66 8:30 AM 0 0 9 12 0 3 6 0 0 0 0 0 0 0 0 0 30 81 8146 AM 0 0 22 5 0 2 9 0 0 0 0 0 0 0 0 0 38 100 Count Total 0 0 76 20 0 10 47 0 0 0 0 0 0 0 0 0 153 0 Peak Hour 0 0 44 20 0 8 28 0 1 0 0 0 0 0 0 0 0 1 100 0 Note: Two-hour count summary volumes include heavy vehicles but exclude bicycles in overall count Interval Heavy Vehicle Totals Bicycles Pedestrians (Crossing Leg) Start EB WB NB SB Total EB WB NB SB Total East West North South Total 7:00 AM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7:15AM 0 1 0 0 1 0 0 0 0 0 0 1 0 0 1 7:30 AM 0 0 0 0 0 1 0 0 0 1 0 0 0 0 0 7:45 AM 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 8:00 AM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8:15AM 2 0 0 0 2 0 0 0 0 0 0 2 0 0 2 8:30 AM 0 0 0 0 0 0 0 0 0 0 0 2 0 0 2 8:45AM 4 2 0 0 6 0 0 0 0 0 0 1 0 0 1 Count Total 7 3 0 0 10 1 0 0 0 1 0 6 0 0 6 Peak Hr 6 2 0 0 8 0 0 0 0 0 0 5 0 0 5 Mark Skaggs: (425) 250-0777 mark.skaggs@idaxdata.com www.idaxdata.com LAKE GROVE ES STUDEN DROP OFF WWI SW 308TH ST Date: Wed, Jun 13, 2018 N Peak Hour Count Period: 7:00 AM to 9:00 AM Peak Hour: 8:00 AM to 9:00 AM U a M J I LU SW 3087H ST 1 r ���_...>L _ 4 0 ~ 0 43 if 75 36 �> TEV: 145 PHF: 0.53 35 —� 39 20 19 0 42 � 0— 4 9� V SW 308TH ST o GO> u Z � }i uj L 0000 Ly D a LSO HV %: PHF QWO WB 5.3% 0.48 N N NB 23.1% 0.54 SB 0.0% 0.63 TOTAL 8.3% 0.53 Two -Hour Count Summaries SW 308TH ST SW 308TH ST LAKE GROVE ES STUDEN DROP OFF DWY 3RD AVE SW 15-min Rolling Eastbound Westbound Northbound Southbound Interval Total One Hour Start LIT LT TH RT LIT LT TH RT LIT LT TH RT LIT LT TH RT 7:00 AM 0 0 6 0 0 0 1 0 0 0 0 0 0 0 0 1 8 0 7:15AM 0 0 7 0 0 4 4 0 0 0 0 1 0 0 0 0 16 0 7:30 AM 0 1 5 3 0 2 6 0 0 0 0 0 0 0 0 1 18 0 7:45 AM C 0 9 1 0 5 8 0 0 0 0 0 0 0 0 0 23 65 8:00 AM 0 0 3 0 0 2 8 0 0 2 0 1 0 2 0 0 18 75 8:15 AM 0 0 7 0 0 1 8 0 0 0 0 3 0 0 0 0 19 78 8:30 AM 0 0 3 5 0 11 6 D 0 4 1 7 D 2 0 0 39 99 6:45 AM 0 0 7 14 0 21 14 4 0 1 0 7 0 0 1 0 69 145 Count Total 1 0 1 47 23 0 46 55 4 0 7 1 19 0 4 1 2 210 0 Peak Hour 1 0 0 20 19 0 35 36 4 0 7 1 18 0 4 1 0 145 0 Note: Two-hour count summary volumes include heavy vehicles but exclude bicycles in overall count. Interval Heavy Vehicle Totals Bicycles Pedestrians (Crossing Leg) Start EB WB NB SB Total EB WB NB SB Total East West North South Total 7:00 AM 0 0 0 C. 0 ID 0 0 0 0 0 0 0 1 1 7:15AM 0 1 1 0 2 0 0 0 0 0 0 0 0 0 0 7:30 AM 0 0 0 0 0 1 0 0 0 1 0 0 0 0 0 7:45 AM 1 0 0 0 1 0 "u 0 0 0 0 0 0 0 0 8:00 AM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8:15AM 2 0 0 D 2 0 0 0 0 0 0 0 0 1 1 8:30 AM 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 8-45 AM 0 3 6 0 9 0 0 0 0 0 1 14 0 8 23 Count Total 3 5 7 0 15 1 0 0 1 0 1 1 14 0 10 25 Peak Hour 2 4 6 0 12 0 0 0 0 0 1 14 0 9 24 Mark Skaggs: (425) 250-0777 mark.skaggs@idaxdata.com www.idaxdata.com LAKE GROVE ES EXIT DWY SW 308TH ST WWI A Date: Wed, Jun 13, 2018 N Peak Hour Count Period: 7:00 AM to 9:00 AM Peak Hour: 8:00 AM to 9:00 AM m ac A .» O JN OO■ L l iL vj1 1 TEV: 159 67 1471 �. • c 0 > PHF: 0.5 0 42 41 0 0 $1 � 0 � � 2 SW 308TH ST n "i t r uj>_ O r CV)Q 0 O X HV %: PHF w w EB 21 4% 0.62 J w WB 4 2% 0.55 o 0 NB 0.0% 033 SB 0.0% 0.30 TOTAL 7.5% 050 Two -Hour Count Summaries Interval SW 308TH ST SW 308TH ST LAKE GROVE ES EXIT DWY 2ND AVE SW Eastbound Westbound Northbound Southbound Start 15-min Total Rolling One Hour UT LT TH RT UT LT TH RT UT LT TH RT UT LT TH RT 7:00 AM 0 0 6 0 0 0 1 1 0 0 0 0 0 0 0 0 8 0 7:15AM 0 0 8 0 0 0 7 0 0 0 0 0 0 2 0 0 17 0 7:30 AM 0 0 4 0 0 0 6 1 0 0 0 0 0 1 0 1 13 0 7:45 AM 0 1 9 0 0 0 14 0 0 0 0 0 0 2 0 1 27 65 8:00 AM 0 1 6 0 0 0 9 1 0 0 0 0 0 0 0 0 17 74 8:15AM 0 0 5 0 0 0 9 0 0 0 0 0 0 0 0 0 14 71 8:30 AM 0 0 17 0 0 0 18 2 0 0 0 10 0 1 0 0 48 106 8:45 AM 0 0 13 0 0 0 31 1 0 4 1 25 1 0 4 0 1 80 1 159 Count Total 0 2 68 0 0 0 95 6 0 4 1 3Q 0 10 0 3 1 224 0 Peak Hour 0 1 41 0 0 0 67 4 0 4 1 35 1 0 5 0 1 159 0 Note: Two-hour count summary volumes include heavy vehicles but exclude bicycles in overall count. Interval Heavy Vehicle Totals Bicycles Pedestrians (Crossing Leg) EB WB NB SB Total EB WB NB SB Total East West North South Total Start 7:00 AM 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 7:15AM 1 1 0 0 2 0 0 0 0 0 0 0 0 0 0 7:30 AM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7:45 AM 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 8:00 AM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8:15AM 2 0 0 0 2 0 0 0 0 0 0 0 0 1 1 8:30 AM 0 1 0 0 1 0 0 0 0 0 3 0 0 0 3 8:45 AAA 7 2 0 0 9 .0 0 0 0 0 3 0 0 1 4 Count Total 11 4 0 0 15 1 0 0 0 0 0 6 0 0 3 9 Peak Hour 9 3 0 0 12 1 0 0 0 0 0 6 0 0 2 8 Mark Skaggs: (425) 250-0777 mark.skaggs@idaxdata.com www.idaxdata.com 1ST AVE S WI. SW 308TH ST Date: Wed, Jun 13, 2018 N Peak Hour Count Period: 7:00 AM to 9:00 AM Peak Hour: 8:00 AM to 9:00 AM M eo M N N N co LU 7 j_phA■''E^' V Y Q O I- r N fn r N It O SW 308TH ST r L 3 7 10 TEV: 641 3 � 31 - �t 0 o 0 ` 0 r- A PHF: 0.93 81 5 66 n t ri 25 0 2840 o 0 � 2 .. _ -- V' SW 308TH ST o C14 M rn L <Q o N HV %: PHF U) EB 11.1% 060 r WB 3.2% 0.86 V V M N NB 31% 092 SB 3 4% 093 TOTAL 4 2% 093 Two -Hour Count Summaries SW 308TH ST SW 308TH ST 1ST AVE S 1ST AVE S 15-min Rolling Interval Start Eastbound Westbound Northbound Southbound Total One Hour UT LT TH RT UT LT TH RT UT LT TH RT UT LT TH RT 7:00 AM 0 0 0 7 0 2 0 1 0 0 82 1 0 0 39 0 132 0 7:15 AM u 2 0 7 0 5 2 2 0 7 95 3 0 1 45 2 171 0 7:30 AM 0 2 0 6 0 4 0 0 0 5 78 1 0 0 54 4 154 0 7:45 AM 2 2 9 0 5 0 1 1 12 71 5 0 0 46 2 156 613 8:00 AM 0 2 1 6 0 5 1 1 0 9 54 5 0 0 53 1 138 619 8:15 AM 0 3 0 6 0 7 1 1 0 10 64 6 0 1 60 1 160 608 8:30 AM 0 3 1 25 0 8 1 0 0 19 45 5 0 1 59 3 170 624 8:45 AM 0 2 3 29 0 5 0 1 0 24 50 3 0 2 48 6 173 641 Count Total 0 16 7 95 0 41 5 7 1 86 539 29 0 5 404 19 1,254 0 Peak Hour i 0 10 5 66 1 0 25 3 3 0 62 213 19 0 4 220 11 641 1 0 Note: Two-hour count summary volumes include heavy vehicles but exclude bicycles in overall count. Interval Heavy Vehicle Totals I Bicycles Pedestrians (Crossing Leg) EB WB NB SB Total EB WB NB SB Total East West North South Total Start 7:00 AM .. 0 3 0 3 0 0 0 0 0 0 0 0 0 0 7:15AM 0 2 3 1 6 0 0 0 0 0 0 0 0 0 0 7:30 AM 0 0 1 1 0 0 0 0 0 0 0 0 0 0 7:45 AM 1 0 0 1 2 0 0 0 0 0 0 0 0 0 0 8:00 AM 0 0 3 2 5 0 0 0 0 0 0 0 0 1 1 8:15AM 2 0 1 2 5 0 0 0 1 1 0 0 0 1 1 8:30 AM 0 1 3 3 7 0 0 0 0 0 0 0 0 0 0 8:45 AM 1 0 2 1 10 0 0 0 0 4 0 0 0 0 0 Count Total 10 3 15 11 39 1 0 0 0 1 1 0 0 0 2 2 Peak Hour 9 1 9 8 27 1 0 0 0 1 1 0 0 0 2 2 Mark Skaggs: (425) 250-0777 mark.skaggs@idaxdata.com www.idaxdata.com 8TH "E SW SW 308TH ST ww- OZ4 Date: Wed, Jun 13, 2018 N Peak Hour Count Period: 4:00 PM to 6:00 PM Peak Hour: 5:00 PM to 6:00 PM M h V M Q 2 N to Cl) IA O p SW 308TH 5T � � 0 �. 4 - ' 3 TEV: 132 24 0 0 0 24 13 `► PHF: 0.83 g 2 O� 8 0 SW 308TH S A 0~ y 0 V t j4 Fco HV %: PHF Q 2 EB 0.0% 0.75 n °D WB 0 0% 0.75 a NB 0.0% 0.93 SB 0.0% 0.67 TOTAL 0.0% 0.83 Two -Hour Count Summaries SW 308TH ST SW 308TH ST 8TH AVE SW 8TH AVE SW Interval Start Eastbound Westbound Northbound Southbound 15-min Total Rolling One Hour UT LT TH RT UT LT TH RT UT LT TH RT UT LT TH RT 4:00 PM 0 0 3 0 0 1 2 0 0 2 6 2 0 1 7 2 26 0 4:15 PM 0 0 2 0 0 2 4 0 0 1 6 2 0 1 6 2 26 0 4:30 PM 0 0 1 0 0 2 3 0 0 2 3 4 0 1 5 1 22 0 4:45 PM 0 0 3 1 0 6 3 0 0 2 6 3 0 0 3 1 28 102 5:00 PM 0 1 0 3 0 1 4 1 0 1 7 2 0 0 8 1 29 105 5:15 PM 0 1 6 1 0 2 1 2 0 2 6 1 0 2 7 1 32 111 5:30 PM 0 1 3 1 0 2 5 1 0 2 9 0 0 2 10 4 40 129 5:45 PM 0 0 4 3 0 3 2 0 0 2 8 1 0 1 7 0 31 132 Count Total 0 3 22 9 0 19 24 4 0 14 51 15 0 8 53 12 234 0 Peak Hour 0 3 13 8 0 8 12 4 1 0 7 30 4 0 5 32 6 132 0 .Note: Two-hour count summary volumes include heavy vehicles but exclude bicycles in overall count. Interval Heavy Vehicle Totals Bicycles Pedestrians (Crossing Leg) Start EB WB NB SB Total EB WB NB SB Total East West North South Total 4:00 PM 0 0 0 0 0 0 0 0 0 0 0 4 0 1 5 4:15PM 0 0 1 0 1 0 0 1 0 1 0 1 0 0 1 4:30 PM 0 0 0 0 0 2 0 0 0 2 0 0 0 0 0 4:45 PM 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 5:00 PM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5:15PM 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 5:30PM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5:46 PM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Count Total 0 0 1 0 1 2 0 1 1 4 0 6 0 1 7 Peak Hour 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 1 Mark Skaggs: (425) 250-0777 mark.skaggs@idaxdata.com www.idaxdata.com 24 LAKE GROVE ES EAST STAFF LOT DWY WWI SW 308TH ST 024 Date: Tue, Jun 19, 2018 N Peak Hour Count Period: 2:00 PM to 6:00 PM Peak Hour: 3:15 PM to 4:15 PM M M N r 3 • W Q t M O ti M r O SW 308TH 5T 4 f {�fl00�..' 16 • p ry +— 0 �gg E--- 4 TEV: 184 50 56 N • � rE3 B� 48-014 PHF: 0.81 2 0 > 74 �O p 7 70 —` C '. V SW 308TH ST O w NLn v) < _j O aW LL U) LL Y W EB HV %: 9.1% PHF 0.66 g WB 3.6% 078 010 r°)i NB 0.0% 061 SIB 4.3% 0.64 TOTAL 4.9% 0.81 Four -Hour Count Summaries SW 308TH ST SW 308TH ST LAKE GROVE ES EAST STAFF LOT DWV 4th AVE SW 15-min Rolling Interval Start Eastbound Westbound Northbound Southbound Total One Hour UT LT TH RT UT LT TH RT UT LT TH RT UT LT TH RT 3:15 PM 0 1 12 3 0 1 14 2 0 6 0 6 0 6 2 1 54 0 3:30 PM 0 2 14 9 0 1 11 0 0 3 3 0 0 3 1 1 48 0 3:45 PM 0 1 14 1 0 0 16 2 0 10 2 4 0 2 0 5 57 0 4:00 PM 0 0 8 1 0 0 9 0 0 2 0 3 0 2 0 0 25 184 Peak Hour 0 4 48 14 0 2 50 4 0 21 5 13 0 13 3 7 184 0 Note: For all three-hour count summary, see next page. Interval Heavy Vehicle Totals Bicycles Pedestrians (Crossing Leg) Start EB WB NB SB Total EB WB NB SIB Total East West North South Total 3:15 PM 0 0 0 1 1 0 0 0 0 0 27 9 7 25 68 3:30 PM 4 1 0 0 5 0 0 0 0 0 32 3 6 32 73 3:45 PM 2 1 0 0 3 0 0 0 0 0 14 0 2 13 29 4:00 PM 1 0 0 0 0 0 0 0 0 0 0 2 0 1 0 3 Peak Hour 1 6 2 0 1 9 0 0 0 0 0 75 12 16 70 173 Mark Skaggs: (425) 250-0777 mark skaggs@idaxdata.com wwwJdaxdata.wm 94 Four -Hour Count Summaries Interval SW 308TH ST SW 308TH ST LAKE GROVE ES EAST STAFF LOT DWY 4th AVE SW Eastbound Westbound Northbound Southbound Start 15-min Rolling UT LT TH RT UT LT TH RT UT LT TH RT UT LT TH RT Total One Hour 2:00 PM 1 1 9 1 0 1 9 3 0 1 0 1 0 1 0 2 30 0 2:15 PM 0 0 8 2 0 1 4 5 0 0 1 1 0 0 0 0 22 0 2:30 PM 0 1 7 0 0 0 6 3 0 0 0 1 0 2 0 1 21 0 2:45 PM 0 1 9 0 0 2 5 0 0 1 0 2 0 1 0 1 22 95 3:00 PM 0 0 3 1 0 0 8 1 0 0 0 5 0 3 0 0 21 86 3:15 PM 0 1 12 3 0 1 14 2 0 6 0 6 0 6 2 1 54 118 3:30 PM 0 2 14 9 0 1 11 0 0 3 3 0 0 3 1 1 48 145 3:45 PM 0 1 14 1 0 0 16 2 0 10 2 4 0 2 0 5 57 180 4:00 PM 0 0 8 1 0 0 9 0 0 2 0 3 0 2 0 0 25 184 4:15 PM 0 0 2 1 0 0 3 0 0 1 0 2 0 0 0 1 10 140 4:30 PM 0 0 6 0 0 0 4 1 0 1 0 2 0 0 0 0 14 106 4:45 PM 0 0 4 0 0 0 8 0 0 0 0 1 0 1 0 1 15 64 5:00 PM 0 1 9 1 0 0 9 0 0 0 0 0 0 0 0 1 21 60 5:15 PM 0 0 7 1 0 0 8 0 0 0 0 0 0 0 0 0 16 66 5:30 PM 0 0 4 0 0 0 7 1 0 0 0 0 0 0 0 1 13 65 5:45 PIVI i 0 2 2 1 0 2 10 0 0 1 0 1 0 0 0 2 21 71 Count Total 1 10 118 22 0 8 131 18 0 26 6 =0 21 3 17 410 0 Peak Hour 0 4 48 14 0 2 50 4 1 0 21 5 13 0 13 3 7 184 0 Note: Four-hour count summary volumes include heavy vehicles but exclude bicycles in overall count. Interval Heavy Vehicle Totals Bicycles Pedestrians (Crossing Leg) EB WB NB SB Total EB WB NB SB Total East West North South Total Start 2:00 PM 0 0 0 0 0 0 2 0 0 2 13 0 2 22 37 2:15PM 0 0 0 0 0 0 2 0 0 2 5 0 0 1 6 2:30 PM 0 0 0 0 0 0 0 0 0 0 8 0 0 0 8 2:45 PM 0 1 0 0 1 0 0 0 0 0 2 0 0 8 10 3:00 PM 0 0 0 0 0 1 0 0 0 1 4 4 1 20 29 3:15 PM 0 0 0 1 1 0 0 0 0 0 27 9 7 25 68 3:30 PM 4 1 0 0 5 0 0 0 0 0 32 3 6 32 73 3:45 PM 2 1 0 0 3 0 0 0 0 0 14 0 2 13 29 4:00 PM 0 0 0 0 0 0 0 0 0 0 2 0 1 0 3 4:15PM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4:30 PM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4:45 PM 0 0 0 0 0 0 0 0 0 0 1 0 1 1 3 5:00 PM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5:15PM 0 0 0 0 0 0 0 0 0 0 4 0 0 0 4 5:30 PM 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 5:45 PM 0 0 0 0 0 0 1 0 0 1 1 0 0 0 1 Count Total 6 4 0 1 11 1 5 0 0 6 113 16 20 122 271 Peak Hour 6 2 0 1 9 1 0 0 0 0 0 75 12 16 70 173 Mark Skaggs: (425) 250-0777 mark.skaggs@idaxdata.com www.idaxdata.com 25 LAKE GROVE ES BUS DWY da� SW 308TH ST Date: Tue, Jun 19, 2018 N Peak Hour Count Period: 2:00 PM to 6:00 PM Peak Hour: 3:00 PM to 4:00 PM SW 308TH ST 53 E 0 TEV: 143 8 - F00 O� PHF: 0.76 3 72 72 �O 0 ,,0 19 V SW 308TH ST n i r wr t Fr o e� 0 Q HV %: PHF p EB 9.7% 0.75 w in WB 6.3% 0-84 g w NB 0.0% 044 n SB - - TOTAL 7 7% 076 Four -Hour Count Summaries SW 308TH ST SW 308TH ST LAKE GROVE ES BUS DWY 0 15-min Rolling Eastbound Westbound Northbound Southbound Interval Total One Hour Start UT LT TH RT UT LT TH RT UT LT TH RT UT LT TH RT 3:00 PM 0 0 11 0 0 1 9 0 0 0 0 1 0 0 0 0 22 0 3:15 PM 0 0 23 1 0 3 16 0 0 1 0 3 0 0 0 0 47 0 3:30 PM 0 0 14 3 3 3 11 0 0 1 0 0 0 0 0 0 35 0 3:45 PM 0 0 17 3 0 1 17 0 0 1 0 0 0 0 0 0 39 143 Peak Hour j 0 0 65 7 1 3 8 53 0 1 0 3 0 4 0 0 0 0 143 0 Note: For all three-hour count summary, see next page. Interval Heavy Vehicle Totals Bicycles Pedestrians (Crossing Leg) Start EB WB NB SB Total EB WB NB SB Total East West North South Total 3:00 PM 0 0 0 0 0 0 0 0 0 0 3 4 3 11 21 3:15 PM 1 0 0 0 1 0 0 0 0 0 4 27 4 6 41 3:30 PM 4 2 0 0 6 0 0 0 0 0 1 32 3 2 38 3:45PM 1 2 2 0 0 4 1 0 0 0 0 0 0 14 1 0 15 Peak Hour 1 7 4 0 0 11 1 0 0 0 0 0 8 77 11 19 115 Mark Skaggs: (425) 250-0777 mark.skaggs@idaxdata.com www.idaxdata.com 25 Four -Hour Count Summaries Interval SW 308TH ST SW 308TH ST LAKE GROVE ES BUS DWY 0 15-min Rolling Start Eastbound Westbound Northbound Southbound Total One Hour UT LT TH RT UT LT TH RT UT LT TH RT UT LT TH RT 2:00 PM 0 0 11 0 0 3 12 0 0 1 0 1 0 0 0 0 28 0 2:15 PM 0 0 6 3 0 3 10 0 0 0 0 0 0 0 0 0 22 0 2:30 PM 0 0 10 0 0 4 9 0 0 0 0 0 0 0 0 0 23 0 2:45 PM 0 0 10 2 0 0 7 0 0 0 0 0 0 0 0 0 19 92 3:00 PM 0 0 11 0 0 1 9 0 0 0 0 1 0 0 0 0 22 86 3:15 PM 0 0 23 1 0 3 16 0 0 1 0 3 0 0 0 0 47 111 3:30 PM 0 0 14 3 3 3 11 0 0 1 0 0 0 0 0 0 35 123 3:45 PM 0 0 17 3 0 1 17 0 0 1 0 0 0 0 0 0 39 143 4:00 PM 0 0 13 0 0 0 9 0 0 0 0 0 0 0 0 0 22 143 4:15 PM 0 0 4 0 0 3 3 0 0 0 0 0 0 0 0 0 10 106 4:30 PM 0 0 8 0 0 1 5 0 0 0 0 0 0 0 0 0 14 85 4:45 PM 0 0 6 0 0 0 7 0 0 1 0 0 0 0 0 0 14 60 5:00 PM 0 0 9 0 0 0 9 0 0 0 0 0 0 0 0 0 18 56 5:15PM 0 0 7 0 0 0 8 0 0 0 0 0 0 0 0 0 15 61 5:30 PM 0 0 3 1 0 0 8 0 0 0 0 0 0 0 0 0 12 59 5:45 PM 0 G 3 0 0 0 12 0 0 0 0 0 1 0 0 0 0 15 60 Count Total 0 0 155 13 3 22 152 0 0 5 0 5 0 0 0 0 355 0 Peak Hour 0 0 65 7 3 8 53 0 0 3 0 4 0 0 0 0 143 0 Note: Four-hour count summary volumes include heavy vehicles but exclude bicycles in overall count Interval Heavy Vehicle Totals Bicycles Pedestrians (Crossing Leg) Start EB WB NB SIBTotal EB WB NB SB Total East West North South Total 2:00 PM 0 0 0 0 0 0 2 0 0 2 0 13 0 3 16 2:15PM 0 0 0 0 0 0 2 0 0 2 0 5 0 2 7 2:30PM 0 0 0 0 0 0 0 0 0 0 0 8 0 2 10 2:45 PM 0 1 0 0 1 0 0 0 0 0 0 2 0 4 6 3:00 PM 0 0 0 0 0 0 0 0 0 0 3 4 3 11 21 3:15 PM 1 0 0 0 1 0 0 0 0 0 4 27 4 6 41 3:30 PM 4 2 0 0 6 0 0 0 0 0 1 32 3 2 38 3:45 PM 2 2 0 0 4 0 0 0 0 0 0 14 1 0 15 4:00 PM 0 0 0 0 0 0 0 0 0 0 0 2 0 0 2 4:15PM 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 4:30 PM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4:45 PM 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 5:00 PM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5:15PM 0 0 0 0 0 0 0 0 0 0 0 4 0 4 a 5:30 PM 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 5:45 PM 0 0 0 0 0 0 1 0 0 1 0 1 0 1 2 Count Total 7 7 0 0 14 0 5 0 0 5 8 113 11 35 167 Peak Hr 7 4 0 0 11 0 0 0 0 0 8 77 11 19 115 Mark Skaggs: (425) 250-0777 mark.skaggs@idaxdata.com www.idaxdata.com 26 LAKE GROVE ES DROP OFF DWY kfa�, SW 308TH ST Date: Tue, Jun 19, 2018 N Peak Hour Count Period: 2:00 PM to 6:00 PM Peak Hour: 3:00 PM to 4:00 PM LU Q 0 w It JU co to O SW 308TH ST N 1 L LEM 11 > 6 8 TEV: 197 47 E $3 0 �0 o A —> 52 ®� PHF: 0.81 24 — > [, o o 78 17 1 73 1'n � U 0 ~ 46 V SW 308TH ST n i t > 1 wLLa o w o �00 0 _ aO HV %: PHF Y EB 3.8% 0.72 g w WB 3-6% 0.80 N NB 21.7% 0.72 SB 0.0% 065 TOTAL 5.6% 0.81 Four -Hour Count Summaries SW 308TH ST SW 308TH ST LAKE GROVE ES DROP OFF DWY 3RD AVE SW 15-min Rolling Eastbound Westbound Northbound Southbound Interval Start Total One Hour UT LT TH RT UT LT TH RT UT LT TH RT UT LT TH RT 3:00 PM 1 2 11 1 1 1 5 1 0 3 0 4 0 1 0 2 33 0 3:15PM 0 2 21 4 0 10 14 0 0 2 0 6 0 1 0 1 61 0 3:30 PM 0 2 6 4 0 8 12 6 0 3 0 1 0 2 2 1 47 0 3:45 PM 0 2 14 8 0 5 16 4 1 0 1 0 3 1 0 2 1 0 1 56 197 Peak Hour 1 1 8 52 17 1 24 47 11 1 0 9 0 14 0 6 3 4 1 197 0 Note: For all three-hour count summary, see next page. Interval Heavy Vehicle Totals Bicycles Pedestrians (Crossing Leg) EB WB NB SB Total EB WB NB SB Total East West North South Total Start 3:00 PM 0 0 0 0 0 0 0 0 2 2 1 4 0 12 17 3:15PM 1 0 0 0 1 0 0 0 0 0 0 7 0 16 23 3:30 PM 1 1 1 0 3 0 0 0 0 0 0 55 3 12 70 3:45 PM 1 1 2 4 0 7 0 0 0 0 0 0 5 0 6 11 Peak Hour 1 3 3 5 0 11 0 0 0 2 2 1 71 3 46 121 Mark Skaggs: (425) 250-0777 mark.skaggs@idaxdata.com www.idaxdata.com 26 Four -Hour Count Summaries SW 308TH ST SW 308TH ST LAKE GROVE ES DROP OFF DWY 3RD AVE SW Interval 15-min Rolling Start Eastbound Westbound Northbound Southbound Total One Hour UT LT TH RT UT LT TH RT UT LT TH RT UT LT TH RT 2:00 PM 0 2 8 5 0 3 12 3 0 1 0 0 0 2 0 3 39 0 2:15 PM 0 2 2 0 0 6 11 1 0 2 0 1 0 2 2 1 30 0 2:30 PM 0 0 12 0 0 0 13 0 0 1 0 2 0 4 1 0 33 0 2:45 PM 0 0 8 0 0 2 4 0 0 0 0 0 0 2 0 2 18 120 3:00 PM 1 2 11 1 1 1 5 1 0 3 0 4 0 1 0 2 33 114 3:16 PM 0 2 21 4 0 10 14 0 0 2 0 6 0 1 0 1 61 145 3:30 PM 0 2 6 4 0 8 12 6 0 3 0 1 0 2 2 1 47 159 3:45 PM 0 2 14 8 0 5 16 4 0 1 0 3 0 2 1 0 56 197 4:00 PM 0 0 13 0 0 1 5 1 0 1 0 0 0 1 0 0 22 186 4:15 PM 0 0 4 0 0 0 7 1 0 0 0 2 0 0 0 0 14 139 4:30 PM 0 0 9 0 0 1 6 1 0 0 0 2 0 2 0 0 21 113 4:45 PM 0 0 6 0 0 0 6 2 0 0 0 0 0 3 0 0 17 74 5:00PM 0 0 8 0 0 0 10 0 0 0 0 1 0 0 0 0 19 71 5:15 PM 0 2 5 0 0 0 7 1 0 0 0 0 0 1 0 2 18 75 5:30 PM 0 0 4 0 0 0 5 3 0 0 0 0 0 [) 0 1 13 67 5:45 PM 0 0 3 0 0 0 11 2 0 0 0 0 0 0 1 18 68 Count Total 1 14 134 22 1 37 144 26 0 14 0 22 0 24 6 14 459 0 Peak Hour 1 8 52 17 1 24 47 11 0 9 0 14 0 6 3 4 197 0 ,Note: Four-hour count summary volumes include heavy vehicles but exclude bicycles in overall count. Interval Heavy Vehicle Totals Bicycles Pedestrians (Crossing Leg) EB WB NB SB Total EB WB NB SB Total East West North South Total Start 2:00 PM 0 0 0 0 0 0 2 0 0 2 0 4 0 0 4 2:15PM 0 0 0 0 0 0 2 0 0 2 0 0 0 1 1 2:30 PM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2:45 PM 0 1 0 0 1 0 0 0 0 0 4 0 0 6 10 3:00 PM 0 0 0 0 0 0 0 0 2 2 1 4 0 12 17 3:15 PM 1 0 0 0 1 0 0 0 0 0 0 7 0 16 23 3:30 PM 1 1 1 0 3 0 0 0 0 0 0 55 3 12 70 3:45 PM 1 2 4 0 7 0 0 0 0 0 0 5 0 6 11 4:00PM 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 4:15PM 0 1 1 0 2 0 0 0 0 0 0 0 0 0 0 4:30 PM 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0 4:45 PM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5:00 PM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5:15PM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5:30 PM 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 5:45 PM 0 0 0 0 0 0 1 0 0 1 0 0 0 0 0 Count Total 3 6 7 0 16_1 0 5 0 2 7 1 5 75 3 54 137 Peak Hour 3 3 5 0 11 1 0 0 0 2 2 1 1 71 3 46 121 Mark Skaggs: (425) 250-0777 mark.skaggs@idaxdata.com www.idaxdata.com 27 LAKE GROVE ES EXIT DWY i&a), SW 308TH ST Date: Tue, Jun 19, 2018 N Peak Hour Count Period: 2:00 PM to 6:00 PM Peak Hour: 3:15 PM to 4:15 PM r M w V V (j n Q O Z N N O 30$7H ST 1. 9W 0 4 2 TEV: 226 70 79 19— r� '' ~ 0 c N 882 80 PHF: 0.74 0 8 0 ~ _ 0 v'� 19 V SW 308TH ST �- ! wr t O N N �t > 3:00 O d Y w EB HV %: 4 9% PHF 066 g w WB 3.8% 0.60 U V NB 3.4% 040 SB 0.0% 035 TOTAL 4.0% 074 Four -Hour Count Summaries SW 308TH ST SW 308TH ST LAKE GROVE ES EXIT DWY 2ND AVE SW 15-min Rolling Interval Start Eastbound Westbound Northbound Southbound Total One Hour UT LT TH RT UT LT TH RT UT LT TH RT UT LT TH RT 3:15 PM 0 1 30 0 0 0 22 1 0 1 0 4 0 0 0 1 60 0 3:30 PM 0 1 9 0 0 0 26 7 0 0 1 12 0 3 1 1 61 0 3:45 PM 0 0 24 0 0 0 15 1 0 10 1 25 0 0 0 0 76 0 4:00 PM 0 0 17 0 0 0 7 0 0 1 0 3 0 1 0 0 29 226 Peak Hour j 0 2 80 0 1 0 0 70 9 1 0 12 2 44 0 4 1 2 226 0 Note: For all three-hour count summary, see next page Interval Heavy Vehicle Totals Bicycles Pedestrians (Crossing Leg) EB WB NB SB Total EB WB NB SB Total East West North South Total Start 3:15 PM 1 0 0 0 1 0 0 0 0 0 3 0 0 5 8 3:30 PM 0 1 0 0 1 0 0 0 0 0 14 0 1 8 23 3:45 PM 3 2 2 0 7 0 0 0 0 0 11 0 3 6 20 4:00 PM 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 Peak Hour 1 4 3 2 0 9 1 0 0 0 0 0 28 0 4 19 51 Mark Skaggs: (425) 250-0777 mark skaggs@idaxdata.com www.idaxdata.com 27 Four -Hour Count Summaries SW 308TH ST SW 308TH ST LAKE GROVE ES EXIT DWY 2ND AVE SW Interval 16-min Rolling Start Eastbound Westbound Northbound Southbound Total One Hour UT LT TH RT UT LT TH RT UT LT TH RT UT LT TH RT 2:00 PM 0 1 6 0 0 0 16 0 0 2 1 3 0 0 0 0 29 0 2:15 PM 0 2 7 0 0 0 13 2 0 5 0 1 0 5 0 1 36 0 2:30 PM 1 1 13 0 0 0 9 2 0 2 1 0 0 2 0 0 31 0 2:45 PM 0 0 11 0 0 0 5 2 0 2 0 1 0 1 0 0 22 118 3:00 PM 0 1 16 0 0 0 5 1 0 1 0 3 0 1 0 0 28 117 3:15 PM 0 1 30 0 0 0 22 1 0 1 0 4 0 0 0 1 60 141 3:30 PM 0 1 9 0 0 0 26 7 0 0 1 12 0 3 1 1 61 171 3:45 PM 0 0 24 0 0 0 15 1 0 10 1 25 0 0 0 0 76 225 4:00 PM 0 0 17 0 0 0 7 0 0 1 0 3 0 1 0 0 29 226 4:15 PM 0 0 6 0 0 0 7 1 0 0 0 0 0 0 0 0 14 180 4:30 PM 0 0 14 0 0 0 9 0 0 0 0 1 0 1 0 0 25 144 4:45 PM 0 0 10 0 0 0 7 2 0 0 0 0 0 1 0 0 20 88 5:00 PM 0 0 9 0 0 0 11 1 0 1 0 1 0 0 0 0 23 82 5:15 PM 0 0 5 0 0 0 5 6 0 1 0 1 0 3 0 0 21 89 5:30 PM 0 0 5 0 0 0 10 1 0 0 0 2 0 1 0 0 19 83 5:45 PM G 0 5 G 1 0 0 13 3 1 0 0 0 G 0 3 0 0 24 87 Count Total 1 7 187 0 0 0 180 30 0 26 4 57 0 22 1 3 518 0 Peak Hour 0 2 80 0 0 0 70 9 0 12 2 44 0 4 1 2 226 0 Note: Four-hour count summary volumes include heavy vehicles but exclude bicycles in overall count. Interval Heavy Vehicle Totals Bicycles Pedestrians (Crossing Leg) EB WB NB SIBTotal EB WB NB SB Total East West North South Total Start 2:00 PM 0 0 0 0 0 0 2 0 0 2 0 0 0 0 0 2:15PM 0 0 0 0 0 0 2 0 0 2 5 0 0 2 7 2:30 PM 0 0 0 0 0 0 0 0 0 0 2 0 0 1 3 2:45 PM 0 1 0 0 1 0 0 0 0 0 1 0 0 1 2 3:00 PM 0 0 0 0 0 2 0 0 0 2 8 0 0 3 it 3:15PM 1 0 0 0 1 0 0 0 0 0 3 0 0 5 8 3:30 PM 0 1 0 0 1 0 0 0 0 0 14 0 1 8 23 3:45 PM 3 2 2 0 7 0 0 0 0 0 11 0 3 6 20 4:00 PM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4:15PM 1 1 0 0 2 0 0 0 0 0 0 0 0 0 0 4:30 PM 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 4:45 PM 0 0 0 0 0 0 0 0 0 0 2 0 0 0 2 5:00 PM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5:15PM 0 0 0 0 0 0 0 0 0 0 0 0 0 4 4 5:30 PM 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 5:45 PM 0 0 0 0 0 0 1 0 0 1 0 0 0 0 0 Count Total 6 6 2 0 14 2 5 0 0 7 46 0 4 30 80 Peak Hour 4 3 2 0 9 0 0 0 0 0 28 0 4 19 51 Mark Skaggs: (425) 250-0777 mark.skaggs@idaxdata.com www.idaxdata.com 1ST AVE S SW 308TH ST Date: Wed, Jun 13, 2018 N Peak Hour Count Period: 4:00 PM to 6:00 PM Peak Hour: 4:00 PM to 5:00 PM CO � M M > Q CO CD� M n O to SW 308TH ST Q i 0 V * 0 53 13 TEV: 874 4 �- 36 M •`_ 0 CD PHF: 0.97 30 � o -� 76 2 �� r 61 � � SW 308TH ST n t r �� 0 42 n[in 0 3 UIJ . [ C••fl0����.. . V M LI N Q HV %: PHF U) EB 0.0% 0.79 r WB 0 0% 0.64 r~i NB 0.0% 0.90 SB 0.5% 088 TOTAL 0.2% 097 Two -Hour Count Summaries SW 308TH ST SW 308TH ST 1ST AVE S 1ST AVE S 15-min Rolling Eastbound Westbound Northbound Southbound Interval Start Total One Hour UT LT TH RT UT LT TH RT UT LT TH RT UT LT TH RT 4:00 PM 0 4 1 17 0 10 1 1 0 11 88 6 0 1 77 3 220 0 4:15 PM 0 3 0 12 0 3 1 0 0 12 67 8 0 1 105 4 216 0 4:30 PM 0 4 0 20 0 6 0 0 0 9 74 7 0 3 89 1 213 0 4:45 PM 0 2 1 12 0 11 2 1 0 13 70 12 0 2 99 0 225 874 5:00 PM 0 7 0 10 0 3 2 0 0 10 85 8 0 1 85 5 216 870 5:15 PM 0 1 1 4 0 5 0 0 0 16 75 7 0 2 77 1 189 843 5:30 PM 0 0 0 10 0 4 0 1 0 13 82 3 0 0 76 4 193 823 5:45 PM 0 2 2 6 0 7 0 0 0 11 87 5 0 0 85 1 206 804 Count Total 0 23 5 91 0 49 6 3 0 95 628 56 0 10 693 19 1,678 0 Peak Hour 0 13 2 61 1 0 30 4 2 0 45 299 33 0 7 370 8 874 0 Note: Two-hour count summary volumes include heavy vehicles but exclude bicycles in overall count. Interval Heavy Vehicle Totals Bicycles Pedestrians (Crossing Leg) Start EB WB NB SB Total EB WB NB SB Total East West North South Total 4:00 PM 0 0 0 0 0 0 0 0 0 0 0 3 0 0 3 4:15PM 0 0 0 2 2 0 0 0 0 0 0 0 0 3 3 4:30 PM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4:45 PM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5:00 PM 1 0 2 3 6 0 0 1 0 1 0 0 0 0 0 5:15PM 0 0 1 0 1 0 0 0 0 0 0 2 0 0 2 5:30PM 0 1 0 1 2 0 0 0 2 0 0 0 0 0 5:45PM 0 0 1 1 2 0 0 0 0 0 0 1 0 6 7 Count Total 1 1 0 5 6 12 1 2 0 1 0 3 0 6 0 9 15 Peak Hour 1 0 0 0 2 2 1 0 0 0 0 0 1 0 3 0 3 6 Mark Skaggs: (425) 250-0777 mark.skaggs@idaxdata.com V O m _ � M o o m co O m m m m o m m M o m v M F- � r F r N M m r V m m m f- m r � m O M N r r Z J 0 Q Y j m i �17 r sr M O r O N O m 1-0 In N M M M O N Il- M m M V 0 V N V h N O M N N W Q m O N N M m O N m M Ih O M O V m M O m O V m M m M O N m r m O A e ao F ry m C O � 3 to m W O F N C 3 A LU W Co F A M 3 m 3 m W N N O O m O f� m m f� m m O m V O N N r D N] � r r r r A m M m 7 -t m m O m N CD N N N m m W F m a � N W m W r O r M 1� m r O N m N m � f- m m N m M m N m M m V m m m V M M m NM O O N m r m M N O e � 7 Q � Z O pp r r m O m m � N m I--M M m r I--m CD m m m h p C � N F r r cp O 9 O II fA (n 4 N `pj m 3 m m O M N N r O M O I� m V m r O M M M 1- N M M m m O 7 O V V O M M O M r m c0 J V IL ; a W N M r M M N I- r M N M V V m O m M m m O V O N r r r ayJ YV O (D r � O 10, O r m V m M r N N V � r M m f� O r I� O m O M m N I� m � N m m V a0 N m N r p M am+ �p m� � r r r -Q U) to = 9 tl0 G V M r O m M r m N N m f.- O m r O m M N t- m I- O N O O M O m e N N 7 O pp r ? 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(A v G, 0 Y m C IL 0 O N U U U m ate+ N N N d > ~ c L o ir, u, N (n 00 m z 0 O Lo N Lo N cn rn rn m Y Y (0 2 (0 E ATTACHMENT B Intersection LOS Summary Sheets T TENW HCM 2010 AWSC 1: 8th Ave SW & SW 308th St 10/23/2018 Intersection Intersection Delay, s/veh 7.4 Intersection LOS A Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR S8L SBT SSR Lane Configurations 4 Traffic Vol, veh/h 1 25 1 13 9 9 0 28 24 9 29 2 Future Vol, veh/h 1 25 1 13 9 9 0 28 24 9 29 2 Peak Hour Factor 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 Heavy Vehicles, % 4 4 4 3 3 3 8 8 8 3 3 3 Mvmt Flow 1 33 1 17 12 12 0 37 32 12 39 3 Number of Lanes 0 1 0 0 1 0 0 1 0 0 1 0 Approach EB WB NB SB Opposing Approach WB EB SB NB Opposing Lanes 1 1 1 1 Conflicting Approach Left SB NB EB WB Conflicting Lanes Left 1 1 1 1 1 Conflicting Approach Right NB SB WB EB Conflicting Lanes Right 1 1 1 1 HCM Control Delay 7.4 7.4 7.3 7.5 HCM LOS A A A A Lane NBLn1 EBLn1 WBLn1 SBLn1 Vol Left, % 0% 4% 42% 23% Vol Thru, % 54% 93% 29% 72% Vol Right, % 46% 4% 29% 5% Sign Control Stop Stop Stop Stop Traffic Vol by Lane 52 27 31 40 LT Vol 0 1 13 9 Through Vol 28 25 9 29 RT Vol 24 1 9 2 Lane Flow Rate 69 36 41 53 Geometry Grp 1 1 1 1 Degree of Util (X) 0.076 0.042 0.047 0.062 Departure Headway (Hd) 3.934 4.198 4.1 4.154 Convergence, YIN Yes Yes Yes Yes Cap 904 845 865 857 Service Time 1.986 2.263 2.165 2.206 HCM Lane V/C Ratio 0.076 0.043 0.047 0.062 HCM Control Delay 7.3 7.4 7.4 7.5 HCM Lane LOS A A A A HCM 95th-tile Q 0.2 0.1 0.1 0.2 Federal Way School District - Lake Grove Elementary School 5:00 pm 06/19/2018 2018 Existing AM Peak LOS Synchro 10 Report TENW Page 1 HCM 2010 TWSC 2: West DrivewayAth Ave SW & SW 308th St 10/23/2018 Intersection Int Delay, s/veh 2.5 Movement EBL EBT E8R WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations 43, 4 +T* Traffic Vol, veh/h 0 51 18 7 20 1 12 0 8 5 0 1 Future Vol, veh/h 0 51 18 7 20 1 12 0 8 5 0 1 Conflicting Peds, #/hr 2 0 17 22 0 7 17 0 22 7 0 2 Sign Control Free Free Free Free Free Free Stop Stop Stop Stop Stop Stop RT Channelized - - None - - None - - None - - None Storage Length - - - - - - Veh in Median Storage, # - 0 - - 0 - - 0 0 - Grade, % - 0 - - 0 - 0 0 Peak Hour Factor 55 55 55 55 55 55 55 55 55 55 55 55 Heavy Vehicles, % 7 7 7 0 0 0 0 0 0 17 17 17 Mvmt Flow 0 93 33 13 36 2 22 0 15 9 0 2 Major/Minor Majorl Maior2 Minorl Minor2 Conflicting Flow All 45 _ 0 0 148 0 0 213 203 154 209 218 61 Stage 1 - - - - - - 132 132 - 70 70 - Stage 2 - - - - 81 71 - 139 148 Critical Hdwy 4.17 - 4.1 - 7.1 6.5 6.2 7.27 6.67 6.37 Critical Hdwy Stg 1 - 6.1 5.5 6.27 5.67 - Critical Hdwy Stg 2 - - - - - 6.1 5.5 - 6.27 5.67 - a Follow-up Hdwy 2.263 - 2.2 3.5 4 33 3.653 4.153 3.453 Pot Cap-1 Maneuver 1531 - 1446 748 697 897 717 655 964 Stage 1 - - 876 791 - 904 808 - Stage 2 - - 932 840 - 829 747 - Platoon blocked, % Mov Cap-1 Maneuver 1522 - 1419 717 674 864 683 633 945 Mov Cap-2 Maneuver - - 717 674 - 683 633 - Stage 1 - - 860 777 - 899 796 - Stage 2 909 827 - 800 734 - Approach EB WB NB SB HCM Control Delay, s 0 1.9 9.9 10.1 HCM LOS A B Minor Lane/Major hiat NBLn1 EBL EBT EBR WBL WBT '.NBR SBLn1 Capacity (veh/h) 769 1522 - 1419 - - 716 HCM Lane V/C Ratio 0.047 - - 0.009 - - 0.015 HCM Control Delay (s) 9.9 0 - - 7.6 0 - 10.1 HCM Lane LOS A A - A A - B HCM 95th °lotiie Q(veh) 0.1 0 - 0 - - 0 Federal Way School District - Lake Grove Elementary School 5:00 pm 06/19/2018 2018 Existing AM Peak LOS Synchro 10 Report TENW Page 2 HCM 2010 TWSC 3: West Driveway - 2 & SW 308th St 10/23/2018 Intersection Int Delay, slveh 0.6 Mnvp?mPnt EBT EBR WBL WBT NBL NBR Lane Configurations "fir Traffic Vol, vehlh 44 20 8 28 0 0 Future Vol, vehlh 44 20 8 28 0 0 Conflicting Peds, #Ihr 0 5 0 0 5 0 Sign Control Free Free Free Free Stop Stop RT Channelized - None - None - None Storage Length - Veh in Median Storage, # 0 Grade, % 0 Peak Hour Factor 66 Heavy Vehicles, % 9 Mvmt Flow 67 - 0 0 0 0 0 66 66 66 66 66 9 6 6 8 8 30 12 42 0 0 Major/Minor Majorl Ma or2 Minorl - Conflicting Flow All 0 0 102 0 158 87 Stage 1 - - - - 87 Stage 2 - - 71 - Critical Hdwy - 4.16 - 6.48 6.28 Critical Hdwy Stg 1 - - - 5.48 - Critical Hdwy Stg 2 - - - 5.48 - Follow-up Hdwy - 2.254 - 3.572 3.372 Pot Cap-1 Maneuver - 1465 - 819 955 Stage 1 - - 921 Stage 2 - - 937 - Platoon blocked, % Mov Cap-1 Maneuver - 1459 806 951 Mov Cap-2 Maneuver - 806 - Stage 1 - 910 - Stage 2 933 - HCM Control Delay, s 0 1.7 0 HCM LOS A Minor Lane/Major Mvmt NBLn1 EBT EBR WBL WBT Capacity (vehlh) - 1459 HCM Lane VIC Ratio - 0.008 - HCM Control Delay (s) 0 7.5 0 - HCM Lane LOS A A A HCM 95th %tile Q(veh) - 0 Federal Way School District - Lake Grove Elementary School 5:00 pm 06/19/2018 2018 Existing AM Peak LOS Synchro 10 Report TENW Page 3 HCM 2010 TWSC 4: Center Drivewa /3rd Ave SW & SW 308th St 10/23/2018 Intersection Int Delay, s/veh Movement 4 EBL EBT ERR WBL WBT WBR NBL NBT NBR SBL SBT SER Lane Configurations + Traffic Vol, veh/h 0 20 19 35 36 4 7 1 18 4 1 0 Future Vol, veh/h 0 20 19 35 36 4 7 1 18 4 1 0 Conflicting Peds, #/hr 14 0 23 10 0 1 23 0 10 1 0 14 Sign Controi Free Free Free Free Free Free Stop Stop Stop Stop Stop Stop RT Channeiized - None - - None - - None - - None Storage Length - - - - Veh in Median Storage, # - 0 - - 0 - 0 - - 0 - Grade, % 0 - -3 - 0 0 Peak Hour Factor 53 53 53 53 53 53 53 53 53 53 53 53 Heavy Vehicles, % 5 5 5 5 5 5 23 23 23 0 0 0 Mvmt Flow 0 38 36 66 68 8 13 2 34 8 2 0 Ma or&inor Ma or1 Major2 Wriorl Minor2 Conflicting Flow All 90 0 0 97 0 0 307 301 89 302 315 109 Stage 1 - - - - - - 79 79 - 218 218 - Stage 2 - - - 228 222 - 84 97 - Critical Hdwy 4.15 - 4.15 - 7.33 6.73 6.43 7.1 6.5 6.2 Critical Hdwy Stg 1 - - 6.33 5.73 - 6.1 5.5 Critical Hdwy Stg 2 - - - 6.33 5.73 - 6.1 5.5 - Follow-up Hdwy 2.245 2.245 - 3.707 4.207 3.507 3.5 4 3.3 Pot Cap-1 Maneuver 1486 - 1478 - 606 578 914 654 604 950 Stage 1 - - - 880 790 - 789 726 - Stage 2 - - - - 730 682 - 929 819 - Platoon blocked, % - Mov Cap-1 Maneuver 1469 - 1450 - 560 533 889 593 557 921 Mov Cap-2 Maneuver - - 560 533 - 593 557 - Stage 1 - - 863 775 - 780 683 - Stage 2 - 680 642 - 884 803 - Approach EB WB NB SIB HCM Control Delay, s 0 3.5 10.1 11.3 HCM LOS B B Minor Lane/Major fAvmt NSLn 1 EBL EBT ERR WSL WBT WBR SBLn1 Capacity (veh/h) 751 1469 1450 - 585 HCM Lane V/C Ratio 0.065 - 0.046 - - 0.016 HCM Control Delay (s) 10.1 0 - 7.6 0 - 11.3 HCM Lane LOS B A A A - B HCM 95th %tile Q(veh) 0.2 0 - 0.1 - - 0 Federal Way School District - Lake Grove Elementary School 5:00 pm 06/19/2018 2018 Existing AM Peak LOS Synchro 10 Report TENW Page 4 HCM 2010 TWSC 5: East Driveway & SW 308th St 10/23/2018 Intersection Int Delay, s/veh 2.5 Movement EBT EBR WBL WBT NBL NBR Lane Configurations t t Y Traffic Vol, veh/h 41 0 0 67 4 35 Future Vol, veh/h 41 0 0 67 4 35 Conflicting Peds, #/hr 0 2 8 0 2 8 Sign Control Free Free Free Free Stop Stop RT Channelized - None - None - None Storage Length - 0 Veh in Median Storage, # 0 - 0 0 Grade, % 6 - -10 6 Peak Hour Factor 50 50 50 50 50 50 Heavy Vehicles, % 21 21 4 4 0 0 Mvmt Flow 82 0 0 134 8 70 MajorlMinor Ma or1 Ma or2 Minorl Conflicting Flow All 0 218 90 Stage 1 - - 82 - Stage 2 136 - Critical Hdwy - 7.6 6.8 Critical Hdwy Stg 1 6.6 - Critical Hdwy Stg 2 - - 6.6 - Follow-up Hdwy - 3.5 3.3 Pot Cap-1 Maneuver 0 0 720 959 Stage 1 0 0 921 - Stage 2 0 0 856 - Platoon blocked, % Mov Cap-1 Maneuver - - 719 953 Mov Cap-2 Maneuver 719 - Stage 1 - 921 - Stage 2 854 - Approach EB W8 NB HCM Control Delay, s 0 0 9.3 HCM LOS A Minor Lane/Major Mvmt N8Ln1 EBT WBT Capacity (veh/h) 922 HCM Lane V/C Ratio 0.085 HCM Control Delay (s) 9.3 - HCM Lane LOS A HCM 95th %tile Q(veh) 0.3 - Federal Way School District - Lake Grove Elementary School 5:00 pm 06/19/2018 2018 Existing AM Peak LOS Synchro 10 Report TENW Page 5 HCM 2010 TWSC 6: 1 st Ave S & SW 308th SYS 308th St 10/23/2018 Intersection Int Delay, s/veh Movement 3.1 EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations, Traffic Vol, veh/h 10 5 66 25 3 3 62 213 19 4 220 11 Future Vol, veh/h 10 5 66 25 3 3 62 213 19 4 220 11 Conflicting Peds, #/hr 0 0 2 2 0 0 2 0 2 0 0 0 Sign Control Stop Stop Stop Stop Stop Stop Free Free Free Free Free Free RT Channelized - - None - - None - - None - - None Storage Length - - - - 0 - - - Veh in Median Storage, # - 0 - - 0 - 0 - - 0 - Grade, % - -6 - 3 - 0 - - 0 - Peak Hour Factor 93 93 93 93 93 93 93 93 93 93 93 93 Heavy Vehicles, % 11 11 11 3 3 3 3 3 3 3 3 3 Mvmt Flow 11 5 71 27 3 3 67 .229 20 4 237 12 Ma'orlMinor f4t Minorl Ma'orl Ma'or2 Conflicting Flow All 629 638 247 666 634 241 251 0 0 251 0 0 Stage 1 253 253 - 375 375 - - - - - - - Stage 2 376 385 - 291 259 - - - - Critical Hdwy 6.01 5.41 5.71 7.73 7.13 6.53 4.13 - - 4.13 Critical Hdwy Stg 1 5.01 4.41 - 6.73 6.13 - Critical Hdwy Stg 2 5.01 4.41 - 6.73 6.13 - - - - - Follow-up Hdwy 3.599 4.099 3.399 3.527 4.027 3.327 2.227 - 2.227 Pot Cap-1 Maneuver 472 474 803 333 356 780 1309 - 1309 Stage 1 796 741 - 605 578 - - Stage 2 711 677 - 681 662 - - - - Platoon blocked, % Mov Cap-1 Maneuver 446 446 800 287 335 779 1307 - 1307 Mov Cap-2 Maneuver 446 446 - 287 335 - - - Stage 1 754 737 - 573 547 - - - - - Stage 2 668 641 - 613 658 - - Approach EB WB NB SIB HCM Control Delay, s 10.9 18 1.7 0.1 HCM LOS B C Minor L oAkyjJr Mvml NBL NBT NBR EELn1VVBLn1 518L S13T 83R Capacity (vehlh) 1307 - - 697 310 1307 - - HCM Lane V/C Ratio 0.051 - - 0.125 0.108 0.003 - - HCM Control Delay (s) 7.9 - - 10.9 18 7.8 0 - HCM Lane LOS A - B C. A A - HCM 95th %tile Q(veh) 0.2 - 0.4 0.4 0 - - Federal Way School District - Lake Grove Elementary School 5:00 pm 06/19/2018 2018 Existing AM Peak LOS Synchro 10 Report TENW Page 6 HCM 2010 AWSC 1: 8th Ave SW & SW 308th St 10/23/2018 Intersection Intersection Delay, s/veh 7.3 Intersection LOS A Movement EBL EBT EBR WBL WBT WBR NBL NST NBR SSL SBT SSR Lane Configurations + 4 Traffic Vol, veh/h 3 13 8 8 12 4 7 30 4 5 32 6 Future Vol, vehrh 3 13 8 8 12 4 7 30 4 5 32 6 Peak Hour Factor 0.83 0.83 0.83 0.83 0.83 0.83 0.83 0.83 0.83 0.83 0.83 0.83 Heavy Vehicles, °Ifl 0 0 0 0 0 0 0 0 0 0 0 0 Mvmt Flow 4 16 10 10 14 5 8 36 5 6 39 7 Number of Lanes 0 1 0 0 1 0 0 1 0 0 1 0 Approach EB WB NB SB Opposing Approach WB EB SB NB Opposing Lanes 1 1 1 1 Conflicting Approach Left SB NB EB WB Conflicting Lanes Left 1 1 1 1 Conflicting Approach Right NB SB WB EB Conflicting Lanes Right 1 1 1 1 HCM Control Delay 7.1 7.3 7.3 7.3 HCM LOS A A A A Lane NBLn1 EBLn1 WBLn1 SBLn1 Vol Left, % 17% 12% 33% 12% Vol Thru, % 73% 54% 50% 74% Vol Right, % 10% 33% 17% 14% Sign Control Stop Stop Stop Stop Traffic Vol by Lane 41 24 24 43 LT Vol 7 3 8 5 Through Vol 30 13 12 32 RT Vol 4 8 4 6 Lane Flow Rate 49 29 29 52 Geometry Grp 1 1 1 1 Degree of Util (X) 0.055 0.032 0.033 0.057 Departure Headway (Hd) 4.016 3.922 4.064 3.979 Convergence, YIN Yes Yes Yes Yes Cap 890 907 876 898 Service Time 2.051 1.971 2.112 2.013 HCM Lane V/C Ratio 0.055 0.032 0.033 0.058 HCM Control Delay 7.3 7.1 7.3 7.3 HCM Lane LOS . A A A A HCM 95th-tile Q 0.2 0.1 0.1 0.2 Federal Way School District - Lake Grove Elementary School 5:00 pm 06/19/2018 2018 Existing PM Peak LOS Synchro 10 Report TENW Page 2 HCM 2010 TWSC 2: West Drivewa Ath Ave SW & SW 308th St 10/23/2018 Intersection Int Delay, s/veh 4.7 Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations 4 Traffic Vol, veh/h 4 48 14 Future Vol, veh/h 4 48 14 Conflicting Peds, #/hr 28 0 82 Sign Control Free Free Free RT Channelized - - None Stara e L n th g eg - - - Veh in Median Storage, # - 0 Grade, % 0 Peak Hour Factor 81 81 81 Heavy Vehicles, % 9 9 9 Mvmt Flow 5 59 17 *14 4 4 2 50 4 21 5 13 13 3 7 2 50 4 21 5 13 13 3 7 145 0 91 82 0 145 91 0 28 Free Free Free Stop Stop Stop S:ap Stop Stop - None - - None - None 0 - - 0 0 - 0 - 0 0 - 81 81 81 81 81 81 81 81 81 4 4 4 0 0 0 4 4 4 2 62 5 26 6 16 16 4 9 Major/Minor Major1 Ma'or2 Minorl Minor2 Conflicting Flow All 158 0 0 221 0 0 380 385 358 394 391 238 Stage 1 - - - - - - 223 223 - 160 160 - Stage 2 - - - 157 162 - 234 231 - Critical Hdwy 4.19 - - 4.14 - 7.1 6.5 6.2 7.14 6.54 6.24 Critical Hdwy Stg 1 - - - 6.1 5.5 - 6.14 5.54 - Critical Hdwy Stg 2 - - - - 6.1 5.5 - 6.14 5.54 - Follow-up Hdwy 2.281 - 2.236 - 3.5 4 3.3 3.536 4.036 3.336 Pot Cap-1 Maneuver 1380 - 1336 - 581 552 691 562 541 796 Stage 1 - - 784 723 - 837 762 - Stage 2 - - - - 850 768 - 765 710 - Platoon blocked, % Mov Cap-1 Maneuver 1275 - 1175 465 445 534 436 437 685 Mov Cap-2 Maneuver - 465 445 - 436 437 - Stage 1 - - - 687 633 - 770 703 - Stage 2 - - 776 708 - 643 621 - Approach Eta WB NB SB HCM Control Delay, s 0.5 0.3 13.3 12.8 HCM LOS B B Minor Lane/Major Mvmt NBLn1 EBL EST EBR WBL WBT WBR SBLn1 Capacity (veh/h) 483 1275 - - 1175 - 490 HCM Lane V/C Ratio 0.1 0.004 - - 0.002 - 0.058 HCM Control Delay (s) 13.3 7.8 0 8.1 0 - 12.8 HCM Lane LOS B A A A A - B HCM 95th %tile Q(veh) 0.3 0 - 0 - - 0.2 Federal Way School District - Lake Grove Elementary School 5:00 pm 06/19/2018 2018 Existing PM Peak LOS Synchro 10 Report TENW Page 4 HCM 2010 TWSC 3: West Driveway - 2 & SW 308th St 10/23/2018 Intersection Int Delay, s/veh 1.2 Movement EST EBR WBL WBT NBL NBR Lane Configurations 1� Traffic Vol, veh/h 65 7 11 53 3 4 Future Vol, veh/h 65 7 11 53 3 4 Conflicting Peds, #/hr 0 96 27 0 96 27 Sign Control Free Free Free Free Stop Stop RT Channelized - None None - None Storage Length - 0 Veh in Median Storage, # 0 - - 0 0 Grade, % 0 0 0 Peak Hour Factor 76 76 76 76 76 76 Heavy Vehicles, % 10 10 6 6 0 0 Mvmt Flow 86 9 14 70 4 5 Major/Minor Major1 Ma'or2 Minorl Conflicting Flow All 0 0 191 0 381 214 Stage 1 - - - - 187 - Stage 2 - - 194 - Critical Hdwy - 4.16 - 6.4 6.2 Critical Hdwy Sig 1 - - 5.4 - Critical Hdwy Stg 2 - - 5.4 - Follow-up Hdwy - 2.254 - 3.5 3.3 Pot Cap-1 Maneuver - 1359 - 625 831 Stage 1 - - 850 - Stage 2 - - 844 - Platoon blocked, % Mov Cap-1 Maneuver - 1250 - 523 747 Mov Cap-2 Maneuver - - 523 - Stage 1 - 773 - Stage 2 - 776 - Approach EB WB NB HCM Control Delay, s 0 1.4 10.8 HCM LOS B Minor Lane/Maur Mvrnt NBLn1 EST EBR WBL WBT Capacity (veh/h) 631 - 1250 - HCM Lane V/C Ratio 0.015 0.012 - HCM Control Delay (s) 10.8 7.9 0 HCM Lane LOS B A A HCM 95th %tile Q(veh) 0 0 - Federal Way School District - Lake Grove Elementary School 5:00 pm 06/19/2018 2018 Existing PM Peak LOS Synchro 10 Report TENW Page 6 HCM 2010 TWSC 4: Center Drivewav/3rd Ave SW & SW 308th St 10/23/2018 Intersection Int Delay, s/veh Movement 3.6 EBL EST EBR WBL WBT WBR NSL NST NBR SBL SBT SSR Lane Configurations Traffic Vol, veh/h 9 52 17 25 47 11 9 0 14 6 3 4 Future Vol, veh/h 9 52 17 25 47 11 9 0 14 6 3 4 Conflicting Peds, #1hr 74 0 117 47 0 4 117 0 47 4 0 74 Sign Control Free Free Free Free Free Free Stop Stop Stop Stop Stop Stop RT Channelized - - None - - None - None - - None Storage Length - - - - Veh in Median Storage, # - 0 0 0 - 0 - Grade, % - 0 -3 0 - 0 - Peak Hour Factor 81 81 81 81 81 81 81 81 81 81 81 81 Heavy Vehicles, % 4 4 4 4 4 4 22 22 22 0 0 0 Mvmt Flow 11 64 21 31 58 14 11 0 17 7 4 5 Majorwrior Majorl Ma'or2 Minorl Minor2 Conflicting Flow All 146 0 0 202 0 0 463 422 239 353 425 256 Stage 1 - - - - - - 214 214 - 201 201 - Stage 2 - - - 249 208 - 152 224 - Critical Hdwy 4.14 - 4.14 - 7.32 6.72 6.42 7.1 6.5 6.2 Critical Hdwy Stg 1 - - - 6.32 5.72 - 6.1 5.5 - Critical Hdwy Stg 2 - - - 6.32 5.72 - 6.1 5.5 - Follow-up Hdwy 2.236 2.236 - 3,698 4.198 3.498 3.5 4 3.3 Pot Cap-1 Maneuver 1424 - 1358 - 477 494 753 606 524 788 Stage 1 - 745 690 805 739 Stage 2 - - - - 713 694 - 855 722 - Platoon blocked, % Mov Cap-1 Maneuver 1336 - 1226 373 404 653 518 429 667 Mov Cap-2 Maneuver - - 373 404 - 518 429 - Stage 1 - - 666 618 - 749 675 - Stage 2 - 619 634 - 793 646 - Approach EB WB NB SB HCM Control Delay, s 0.9 2.4 12.6 12 HCM LOS B B Minor Lane/Major Mvmt NBLr1 EI L EBT EBR WBL WBT WBR SBLn1 Capacity (veh/h) 505 1336 1226 - 529 HCM Lane V/C Ratio 0.056 0.008 0.025 - 0.03 HCM Control Delay (s) 12.6 7.7 0 8 0 12 HCM Lane LOS B A A A A B HCM 95th %tile Q(veh) 0.2 0 - - 0.1 - 0.1 Federal Way School District - Lake Grove Elementary School 5:00 pm 06/19/2018 2018 Existing PM Peak LOS Synchro 10 Report TENW Page 8 HCM 2010 TWSC 5: East Driveway & SW 308th St 10/23/2018 Intersection Int Delay, s/veh 2.7 Movement EBT EBR WBL WBT NBL NBR Lane Configurations + t Y Traffic Vol, veh/h 82 0 0 73 12 46 Future Vol, veh/h 82 0 0 73 12 46 Conflicting Peds, #/hr 0 19 47 0 19 47 Sign Control Free Free Free Free Stop Stop RT Channelized - None - None - None Storage Length - 0 Veh in Median Storage, # 0 0 0 Grade, % 6 - -10 6 - Peak Hour Factor 74 74 74 74 74 74 Heavy Vehicles, % 5 5 4 4 3 3 Mvmt Flow 111 0 0 99 16 62 Ma'orUnor Major1 Ma or2 Minorl Conflicting Flow All 0 - 229 158 Stage 1 - 111 Stage 2 118 - Critical Hdwy - 7.63 6.83 Critical Hdwy Stg 1 6.63 - Critical Hdwy Stg 2 - 6.63 - Follow-up Hdwy - - 3.527 3.327 Pot Cap-1 Maneuver 0 0 701 862 Stage 1 0 0 878 - Stage 2 0 0 870 - Platoon blocked, % Mov Cap-1 Maneuver - - 690 828 Mov Cap-2 Maneuver 690 - Stage 1 878 - Stage 2 856 - Approach ES WB NB HCM Control Delay, s 0 0 10 HCM LOS B Minor Lane/Major Mvmt NBLn1 EBT WBT Capacity (veh/h) 795 HCM Lane V/C Ratio 0.099 HCM Control Delay (s) 10 HCM Lane LOS B HCM 95th %tile Q(veh) 0.3 Federal Way School District - Lake Grove Elementary School 5:00 pm 06/19/2018 2018 Existing PM Peak LOS Synchro 10 Report TENW Page 10 HCM 2010 TWSC 6: 1 st Ave S & SW 308th SYS 308th St 10/23/2018 Intersection Int Delay, s/veh 2.5 Movement EBL EST EBR WBL WBT WBR NBL NBT NBR SBL Lane Configurations , 1� Traffic Vol, veh/h 13 2 61 30 4 2 45 299 33 7 370 8 Future Vol, veh/h 13 2 61 30 4 2 45 299 33 7 370 8 Conflicting Peds, #/hr 3 0 3 3 0 0 6 0 3 0 0 3 Sign Control Stop Stop Stop Stop Stop Stop Free Free Free Free Free Free RT Channelized - - None - - None - - None - - None Storage Length - 0 - - - Veh in Median Storage, # - 0 - - 0 - - 0 - - 0 - Grade, % - -6 - - 3 - - 0 - - 0 - Peak Hour Factor 97 97 97 97 97 97 97 97 97 97 97 97 Heavy Vehicles, % 0 0 0 0 0 0 0 0 0 1 1 1 Mvmt Flow 13 2 63 31 4 2 46 308 34 7 381 8 MajorUnor Minor2 Minof 1 Ma or1 Ma or2 Conflicting Flow All 828 842 394 855 829 331 395 0 0 345 0 0 Stage 1 405 405 - 420 420 - - - - - - Stage 2 423 437 - 435 409 - - Critical Hdwy 5.9 5.3 5.6 7.7 7.1 6.5 4.1 - 4.11 - Critical Hdwy Stg 1 4.9 4.3 - 6.7 6.1 - - - - Critical Hdwy Stg 2 4.9 4:3 - 6.7 6.1 - - - - Follow-up Hdwy 3.5 4 3.3 3.5 4 3.3 2.2 2.209 Pot Cap-1 Maneuver 386 401 704 243 269 696 1175 - 1220 Stage 1 717 689 573 553 - - - Stage 2 705 674 561 560 - - - Platoon blocked, % Mov Cap-1 Maneuver 364 380 699 211 255 693 1169 - 1217 Mov Cap-2 Maneuver 364 380 - 211 255 - - Stage 1 685 681 - 549 530 - - - Stage 2 668 646 - 504 553 - - EB WB NB SB HCM Control Delay, s 12 24.2 1 0.1 HCM LOS B C Minor Lane/Maior Mvmt NBL NBT NBR EBLn1WBLn1 SBL SBT SBR Capacity (vehlh) 1169 - 593 224 1217 - HCM Lane VIC Ratio 0.04 - 0.132 0.166 0.006 - HCM Control Delay (s) 8.2 - - 12 24.2 8 0 HCM Lane LOS A - B C A A HCM 95th %tile 4(veh) 0.1 - 0.5 0.6 0 - - Federal Way School District - Lake Grove Elementary School 5:00 pm 06/19/2018 2018 Existing PM Peak LOS Synchro 10 Report TENW Page 12 HCM 2010 AWSC 1: 8th Ave SW & SW 3O8th St 10/23/2018 Intersection Intersection Delay, s/veh 7.4 Intersection LOS A Movement ESL EBT EBR WBL WBT WBR NBL NBT NBR SBL SOT SBR Lane Configurations r + 4 Traffic Val, veh/h 1 27 1 14 10 10 0 30 25 10 31 2 Future Vol, veh/h 1 27 1 14 10 10 0 30 25 10 31 2 Peak Hour Factor 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 Heavy Vehicles, °I° 4 4 4 3 3 3 8 8 8 3 3 3 Mvmt Flow 1 36 1 19 13 13 0 40 33 13 41 3 Number of Lanes 0 1 0 0 1 0 0 1 0 0 1 0 Approach ES WB NB SB Opposing Approach WB EB SB NB Opposing Lanes 1 1 1 1 Conflicting Approach Left SB NB EB WB Conflicting Lanes Left 1 1 1 1 Conflicting Approach Right NB SB WB EB Conflicting Lanes Right 1 1 1 1 HCM Control Delay 7.5 7.4 7.4 7.5 HCM LOS A A A A A Lane NBLn1 EBLn1 WBLn1 SBLn1 ' Vol Left, % 0% 3% 41 % 23% Vol Thru, % 55% 93% 29% 72% Vol Right, % 45% 3% 29% 5% Sign Control Stop Stop Stop Stop Traffic Vol by Lane 55 29 34 43 LT Vol 0 1 14 10 Through Vol 30 27 10 31 RT Vol 25 1 10 2 _ Lane Flow Rate 73 39 45 57 Geometry Grp 1 1 1 1 Degree of Util (X) 0.08 0.045 0.052 0.066 Departure Headway (Hd) 3.951 4.215 4.112 4.17 Convergence, Y/N Yes Yes Yes Yes Cap 899 841 862 853 Service Time 2.009 2.284 2.18 2.228 HCM Lane V/C Ratio 0.081 0.046 0.052 0.067 HCM Control Delay 7.4 7.5 7.4 7.5 HCM Lane LOS A A A A HCM 95th-tile Q 0.3 0.1 0.2 0.2 Federal Way School District - Lake Grove Elementary School 5:00 pm 06/19/2018 2020 Baseline AM Peak LOS Synchro 10 Report TENW Page 1 HCM 2010 TWSC 2: West Drivewa /4th Ave SW & SW 308th St 10/23/2018 Intersection Int Delay, s/veh 2.5 Movement ESL EBT EBR WBL WBT WBR N8L NBT NBR SBL SBT SBR Lane Configurations 41� *To + + Traffic Vol, veh/h 0 54 19 7 21 1 13 0 8 5 0 1 Future Vol, veh/h 0 54 19 7 21 1 13 0 8 5 0 1 Conflicting Peds, #/hr 2 0 17 22 0 7 17 0 22 7 0 2 Sign Control Free Free Free Free Free Free Stop Stop Stop Stop Stop Stop RT Channelized - - None - - None - - None - - None Storage Length - - - Veh in Median Storage, # - 0 - - 0 0 0 Grade, % - 0 - 0 0 0 Peak Hour Factor 55 55 55 55 55 55 55 55 55 55 55 55 Heavy Vehicles, % 7 7 7 0 0 0 0 0 0 17 17 17 Mvmt Flow 0 98 35 13 38 2 24 0 15 9 0 2 Major/Minor Ma or1 Ma o:r2 Minorl Minor2 Conflicting Flow All 47 0 0 155 0 0 221 211 160 217 227 63 Stage 1 - - - - - - 138 138 - 72 72 - Stage 2 - - - 83 73 - 145 155 Critical Hdwy 4.17 4.1 - - 7.1 6.5 6.2 7.27 6.67 6.37 Critical Hdwy Stg 1 - - 6.1 5.5 - 6.27 5.67 - Critical Hdwy Stg 2 - - - - 6.1 5.5 - 6.27 5.67 - Follow-up Hdwy 2.263 - 2.2 - 3.5 4 3.3 3.653 4.153 3.453 Pot Cap-1 Maneuver 1529 - 1438 - 739 690 890 708 647 961 Stage 1 - - - 870 786 901 806 Stage 2 - - - 930 838 - 823 742 - Platoon blocked, % Mov Cap-1 Maneuver 1520 - 1412 709 667 858 675 626 942 Mov Cap-2 Maneuver - - 709 667 - 675 626 - Stage 1 - 854 772 - 896 794 - Stage 2 - 907 825 - 794 729 - Approach ES WB NB SE HCM Control Delay, s 0 1.8 10 10.2 HCM LOS B B Minor Lane/Major A4vmt NBLn1 EBL EST EBR WBL WBT WBR SBLn1 Capacity (veh/h) 759 1520 - 1412 - 708 HCM Lane V/C Ratio 0.05 - - 0.009 - 0.015 HCM Control Delay (s) 10 0 - - 7.6 0 - 10.2 HCM Lane LOS B A - A A - B HCM 95th %tile Q(veh) 0.2 0 - 0 - - 0 Federal Way School District - Lake Grove Elementary School 5:00 pm 06/19/2018 2020 Baseline AM Peak LOS Synchro 10 Report TENW Page 2 HCM 2010 TWSC 5: East Driveway & SW 308th St 10/23/2018 Intersection Int Delay, s/veh 2.5 Movement EBT EBR WBL WBT NBL NBR Lane Configurations + t Y Traffic Vol, veh/h 45 0 0 72 4 38 Future Vol, veh/h 45 0 0 72 4 38 Conflicting Peds, #/hr 0 2 8 0 2 8 Sign Control Free Free Free Free Stop Stop RT Channelized - None - None - None Storage Length - 0 Veh in Median Storage, # 0 - 0 0 Grade, % 6 -10 6 Peak Hour Factor 50 50 50 50 50 50 Heavy Vehicles, % 21 21 4 4 0 0 Mvmt Flow 90 0 0 144 8 76 Major/Minor Majorl Ma or2 Minorl Conflicting Flow All 0 236 98 Stage 1 - - 90 - Stage 2 146 Critical Hdwy - 7.6 6.8 Critical Hdwy Stg 1 6.6 - Critical Hdwy Stg 2 - - 6.6 - Follow-up Hdwy - - 3.5 3.3 Pot Cap-1 Maneuver 0 0 699 948 Stage 1 0 0 911 Stage 2 0 0 844 Platoon blocked, % Mov Cap-1 Maneuver - - 698 942 Mov Cap-2 Maneuver 698 - T Stage 1 911 - Stage 2 842 - Approach EB WB N$ HCM Control Delay, s 0 0 9.3 HCM LOS A Minor Lane/Major Mvmt NBLn1 EBT WBT Capacity (veh/h) 912 - HCM Lane V/C Ratio 0.092 - HCM Control Delay (s) 9.3 HCM Lane LOS A HCM 95th %tile Q(veh) 0.3 Federal Way School District - Lake Grove Elementary School 5:00 pm 06/19/2018 2020 Baseline AM Peak LOS Synchro 10 Report TENW Page 3 HCM 2010 TWSC 6: 1 st Ave S & SW 308th St/S 308th St 10/23/2018 Intersection Int Delay, s/veh Movement 3.2 EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations 41- 4, I 1� *T+ Traffic Vol, veh/h 11 5 70 27 3 3 66 226 20 4 233 12 Future Vol, veh/h 11 5 70 27 3 3 66 226 20 4 233 12 Conflicting Peds, #/hr 0 0 2 2 0 0 2 0 2 0 0 0 Sign Control Stop Stop Stop Stop Stop Stop Free Free Free Free Free Free RT Channelized - - None - None - - None - - None Storage Length - - 0 - - - Veh in Median Storage, # - 0 - 0 - 0 - 0 Grade, % - -6 - 3 - 0 0 Peak Hour Factor 93 93 93 93 93 93 93 93 93 93 93 93 Heavy Vehicles, % 11 11 11 3 3 3 3 3 3 3 3 3 Mvmt Flow 12 5 75 29 3 3 71 243 22 ' 4 251 13 Major/Minor Minor2 Minorl Major1 Major2 Conflicting Flow All 667 677 262 706 672 256 266 0 0 267 0 0 Stage 1 268 268 - 398 398 - - - - - - - Stage 2 399 409 - 308 274 - - - Critical Hdwy 6.01 5.41 5.71 7.73 7.13 6.53 4.13 4.13 - Critical Hdwy Stg 1 5.01 4.41 - 6.73 6.13 - - - Critical Hdwy Stg 2 5.01 4.41 - 6.73 6.13 - - - Follow-up Hdwy 3.599 4.099 3.399 3.527 4.027 3.327 2.227 - 2.227 Pot Cap-1 Maneuver 450 455 789 311 336 764 1292 - - 1291 - Stage 1 785 734 - 586 562 - - - Stage 2 696 666 - 665 651 - - - - - Platoon blocked, % Mov Cap-1 Maneuver 424 426 786 265 315 763 1290 - 1289 Mov Cap-2 Maneuver 424 426 - 265 315 - - - - Stage 1 740 730 - 553 530 - - - — - - - Stage 2 651 628 - 594 647 - - Approach EB W8 N8 SB HCM Control Delay, s 11.1 19.4 1.7 0.1 HCM LOS B C Minor Lane/Major Mvmt NBL NBT NBR EBLniWBLnl SBL SBT SBR Capacity (veh/h) 1290 - 679 286 1289 - HCM Lane V/C Ratio 0.055 - 0.136 0.124 0.003 - HCM Control Delay (s) 8 - - 11.1 19.4 7.8 0 HCM Lane LOS A - B C A A HCM 95th %tile Q(veh) 0.2 - - 0.5 0.4 0 - Federal Way School District - Lake Grove Elementary School 5:00 pm 06/19/2018 2020 Baseline AM Peak LOS Synchro 10 Report TENW Page 4 HCM 2010 AWSC 1: 8th Ave SW & SW 308th St 10/23/2018 Intersection Intersection Delay, s/veh 7.3 Intersection LOS A Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations 41 i + Traffic Vol, veh/h 3 14 8 8 13 4 7 32 4 5 34 6 Future Vol, veh1h 3 14 8 8 13 4 7 32 4 5 34 6 Peak Hour Factor 0.83 0.83 0.83 0.83 0.83 0.83 0.83 0.83 0.83 0.83 0.83 0.83 Heavy Vehicles, % 0 0 0 0 0 0 0 0 0 0 0 0 Mvmt Flow 4 17 10 10 16 5 8 39 5 6 41 7 Number of Lanes 0 1 0 0 1 0 0 1 0 0 1 0 Approach EB WB NB SB Opposing Approach WB EB SB NB Opposing Lanes 1 1 1 1 Conflicting Approach Left SB NB EB WB Conflicting Lanes Left 1 1 1 1 Conflicting Approach Right NB SB WB EB Conflicting Lanes Right 1 1 1 1 HCM Control Delay 7.1 7.3 7.3 7.3 HCM LOS A A A A Lane NBLn1 EBLn1 WBLn1 SBLnl Vol Left, % 16% 12% 32% 11 % Vol Thru, % 74% 56% 52% 76% Vol Right, % 9% 32% 16% 13% Sign Control Stop Stop Stop Stop Traffic Vol by Lane 43 25 25 45 LT Vol 7 3 8 5 Through Vol 32 14 13 34 RT Vol 4 8 4 6 Lane Flow Rate 52 30 30 54 Geometry Grp 1 1 1 1 Degree of Util (X) 0.058 0.033 0.034 0.06 Departure Headway (Hd) 4.023 3.938 4.074 3.987 Convergence, Y/N Yes Yes Yes Yes Cap 887 902 873 896 Service Time 2.059 1.991 2.126 2.023 HCM Lane V/C Ratio 0.059 0.033 0.034 0.06 HCM Control Delay 7.3 7.1 7.3 7.3 HCM Lane LOS A A A A HCM 95th-tile Q 0.2 0.1 0.1 0.2 Federal Way School District - Lake Grove Elementary School 5:00 pm 10/01/2018 2020 Baseline PM LOS Synchro 10 Report TENW Page 1 HCM 2010 TWSC 2: West Driveway/4th Ave SW & SW 308th St 10/23/2018 Intersection Int Delay, s/veh 4.7 Mover€* EBL EBT EBR WBL INBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations *, +i Traffic Vol, veh/h 4 51 15 2 53 4 22 5 14 14 3 7 Future Vol, veh/h 4 51 15 2 53 4 22 5 14 14 3 7 Conflicting Peds, #/hr 28 0 82 145 0 91 82 0 145 91 0 28 Sign Control Free Free Free Free Free Free Stop Stop Stop Stop Stop Stop RT Channelized - - None - None - - None - - None Storage Length - - - - - - Veh in Median Storage, # - 0 0 - - 0 - - 0 - Grade, % - 0 - 0 - - 0 - - 0 - Peak Hour Factor 81 81 81 81 81 81 81 81 81 81 81 81 Heavy Vehicles, % 9 9 9 4 4 4 0 0 0 4 4 4 Mvmt Flow 5 63 19 2 65 5 27 6 17 17 4 9 Major/minor Majorl Major2 Minorl Minor2 Conflicting Flow All 161 0 0 227 0 0 388 393 363 402 400 241 Stage 1 - - - - - - 228 228 - 163 163 - Stage 2 - - - 160 165 - 239 237 - Critical Hdwy 4.19 - - 4.14 - 7.1 6.5 6.2 7.14 ' 6.54 6.24 Critical Hdwy Sig 1 - - 6.1 55 - 6.14 5.54 Critical Hdwy Stg 2 - - 6.1 5.5 - 6.14 5.54 - Follow-up Hdwy 2.281 2.236 3.5 4 3.3 3.536 4.036 3.336 Pot Cap-1 Maneuver 1376 - 1330 574 546 686 555 535 793 Stage 1 - 779 719 - 834 759 - Stage 2 - 847 766 - 760 705 - Platoon blocked, % Mov Cap-1 Maneuver 1272 - - 1169 - 459 441 530 430 432 683 Mov Cap-2 Maneuver - - 459 441 - 430 432 - Stage 1 - 682 629 - 767 700 - Stage 2 - 773 706 - 637 617 Approach EB WB NB SB HCM Control Delay, s 0.4 0.3 13.4 13 HCM LOS B B Minor Lane/Major Mvmt UBLnl EEL EBT EBR WBL WBT WBR SBLn1 Capacity (veh/h) 479 1272 - - 1169 482 HCM Lane V/C Ratio 0.106 0.004 - - 0.002 - 0.061 HCM Control Delay (s) 13.4 7.8 0 - 8:1 0 13 HCM Lane LOS B A A - A A B HCM 95th %tile Q(veh) 0.4 0 - - 0 - 0.2 Federal Way School District - Lake Grove Elementary School 5:00 pm 10/01 /2018 2020 Baseline PM LOS Synchro 10 Report TENW Page 2 HCM 2010 TWSC 5: East Driveway & SW 308th St 10/23/2018 intersection Int Delay, s/veh 2.8 Movement EST EBR WBL WBT NBL N3R Lane Configurations t + Y Traffic Vol, veh/h 87 0 0 77 13 49 Future Vol, veh/h 87 0 0 77 13 49 Conflicting Peds, #/hr 0 19 47 0 19 47 Sign Control Free- Free Free Free Stop Stop RT Channelized - None None - None Storage Length - - 0 Veh in Median Storage, # 0 - - 0 0 Grade, % 6 - - -10 6 Peak Hour Factor 74 74 74 74 74 74 Heavy Vehicles, % 5 5 4 4 3 3 Mvmt Flow 118 0 0 104 18 66 MajorlMinor Majors Major2 Minorl Conflicting Flow All 0 - 241 165 Stage 1 - - - 118 - Stage 2 - 123 - Critical Hdwy - - - 7.63 6.83 Critical Hdwy Stg 1 - 6.63 - Critical Hdwy Stg 2 - - 6.63 - Follow-up Hdwy - - 3.527 3.327 Pot Cap-1 Maneuver 0 0 - 688 853 Stage 1 0 0 - 870 Stage 2 0 0 - 864 - Platoon blocked, % Mov Cap-1 Maneuver - - 677 820 Mov Cap-2 Maneuver 677 - Stage 1 870 Stage 2 850 EB W6 NB HCM Control Delay, s 0 0 10.1 HCM LOS B Minor Lane/Malor Mvmt NBLn1 EST WBT Capacity (veh/h) 785 HCM Lane V/C Ratio 0.107 HCM Control Delay (s) 10.1 HCM Lane LOS B - - HCM 95th %tile Q(veh) 0.4 - Federal Way School District - Lake Grove Elementary School 5:00 pm 10/01 /2018 2020 Baseline PM LOS Synchro 10 Report TENW Page 3 HCM 2010 TWSC 6: 1 st Ave S & SW 308th St/S 308th St 10/23/2018 Intersection Int Delay, s/veh Movement 2.7 EBL EST EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations 1� + Traffic Vol, veh/h 14 2 65 32 4 2 48 317 35 7 393 8 Future Vol, vehlh 14 2 65 32 4 2 48 317 35 7 393 8 Conflicting Pads, #/hr 3 0 3 3 0 0 6 0 3 0 0 3 Sign Control Stop Stop Stop Stop Stop Stop Free Free Free Free Free Free RT Channelized - - None - - None - - None - - None Storage Length - 0 - - Veh in Median Storage, # - 0 - - 0 - - 0 - - 0 Grade, % - -6 - - 3 - - 0 0 Peak Hour Factor 97 97 97 97 97 97 97 97 97 97 97 97 Heavy Vehicles, % 0 0 0 0 0 0 0 0 0 1 1 1 Mvmt Flow 14 2 67 33 4 2 '49 327 36 7 405 8 MajorlMinor Minor2 Minorl Majorl Major2 Conflicting Flow All 878 893 418 907 879 351 419 0 0 366 0 0 Stage 1 429 429 - 446 446 - - - - - - - Stage 2 449 464 . 461 433 - - - Critical Hdwy 5.9 5.3 5.6 7.7 7.1 6.5 4.1 - 4.11 - - Critical Hdwy Stg 1 4.9 4.3 - 6.7 6.1 - - Critical Hdwy Stg 2 4.9 4.3 - 6.7 6.1 - - - Follow-up Hdwy 3.5 4 3.3 3.5 4 3.3 2.2 2.209 Pot Cap-1 Maneuver 363 381 685 222 249 677 1151 - 1198 Stage 1 702 678 - 553 536 - - - Stage 2 689 662 - 541 544 - - - Platoon blocked, % Mov Cap-1 Maneuver 341 359 680 191 235 674 1145 - 1195 Mov Cap-2 Maneuver 341 359 - 191 235 - - - Stage 1 668 669 - 528 512 - - - Stage 2 651 632 - 481 537 - - Approach EB WB NB SB HCM Control Delay, s 12.4 26.9 1 0.1 HCM LOS B D Minor Lane/Major Mvmt NBL NBT NBR EBLn1WBLnl SBL SBT SBR Capacity (veh/h) 1145 - 570 203 1195 _ - HCM Lane V/C Ratio 0.043 0.147 0.193 0.006 - HCM Control Delay (s) 8.3 - 12.4 26.9 8 0 - HCM Lane LOS A B D A A HCM 95th %tile Q(veh) 0.1 - 0.5 0.7 0 - Federal Way School District - Lake Grove Elementary School 5:00 pm 10/01/2018 2020 Baseline PM LOS Synchro 10 Report TENW Page 4 HCM 2010 AWSC 1: 8th Ave SW & SW 308th St 4/23/2019 I7AI•.M Intersection Delay, s/veh Intersection LOS Movement 7.6 A EBU EBL EBT EBR WBU WBL WBT WBR NBU NBL NBT NBR Vol, veh/h 0 1 37 1 0 18 19 14 0 0 30 31 Peak Hour Factor 0.92 0.75 0.75 0.75 0.92 0.75 0.75 0.75 0.92 0.75 0.75 0.75 Heavy Vehicles, % 2 4 4 4 2 3 3 3 2 8 8 8 Mvmt Flow 0 1 49 1 0 24 25 19 0 0 40 41 Number of Lanes 0 0 1 0 0 0 1 0 0 0 1 0 Approach EB WB N8 Opposing Approach WB EB SB Opposing Lanes 1 1 1 Conflicting Approach Left SIB NB EB Conflicting Lanes Left 1 1 1 Conflicting Approach Right NB SIB WB Conflicting Lanes Right 1 1 1 HCM Control Delay 7.6 7.6 7.5 HCM LOS A A A Lane NBLn1 EBLn1 WBLn1 SBLn1 Vol Left, % 0% 3% 35% 31 % Vol Thru, % 49% 95% 37% 65% Vol Right, % 51 % 3% 27% 4% Sign Control Stop Stop Stop Stop Traffic Vol by Lane 61 39 51 48 LT Vol 0 1 18 15 Through Vol 30 37 19 31 RT Vol 31 1 14 2 Lane Flow Rate 81 52 68 64 Geometry Grp 1 1 1 1 Degree of Util (X) 0.09 0.062 0.078 0.076 Departure Headway (Hd) 3.987 4.261 4.148 4.258 Convergence,Y/N Yes Yes Yes Yes Cap 886 828 851 830 Service Time 2.07 2.35 2.234 2.341 HCM Lane V/C Ratio 0.091 0.063 0.08 0.077 HCM Control Delay 7.5 7.6 7.6 7.7 HCM Lane LOS A A A A HCM 95th-tile Q 0.3 0.2 0.3 0.2 Federal Way School District - Lake Grove Elementary School 5:00 pm 4/23/2019 2020 Project AM Peak LOS Synchro 8 Report TENW Page 1 HCM 2010 AWSC 1: 8th Ave SW & SW 308th St intersection Intersection Delay, s/veh Intersection LOS 4/23/2019 Movement 11W SBU SBL SBT SBR Vol, veh/h 0 15 31 2 Peak Hour Factor 0.92 0.75 0.75 0.75 Heavy Vehicles, % 2 3 3 3 Mvmt Flow 0 20 41 3 Number of Lanes 0 0 1 0 Approach SB Opposing Approach NB Opposing Lanes 1 Conflicting Approach Left WB Conflicting Lanes Left 1 Conflicting Approach Right EB Conflicting Lanes Right 1 HCM Control Delay 7.7 HCM LOS A Lane Federal Way School District - Lake Grove Elementary School 5:00 pm 4/23/2019 2020 Project AM Peak LOS Synchro 8 Report TENW Page 2 HCM 2010 TWSC 2: West Drivewa /4th Ave SW & SW 308th St 4/23/2019 intersectionT Int Delay, s/veh 6.2 Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Vol, veh/h 0 62 76 60 28 1 38 2 72 5 2 1 Conflicting Peds, #/hr 2 0 17 22 0 7 17 0 22 7 0 2 Sign Control Free Free Free Free Free Free Stop Stop Stop Stop Stop Stop RT Channelized - - None - None - None - - None Storage Length - - - - - - - Veh in Median Storage, # - 0 - 0 0 0 Grade, % 0 - 0 - - 0 0 Peak Hour Factor 55 55 55 55 55 55 55 55 55 55 55 55 Heavy Vehicles, % 7 7 7 0 0 0 0 0 0 17 17 17 Mvmt Flow 0 113 138 109 51 2 69 4 131 9 4 2 Major/Minor Majorl Major2 Minorl Minot Conflicting Flow All 60 0 0 273 0 0 484 482 226 548 550 76 Stage 1 - - - - - 204 204 - 277 277 - Stage 2 - - - - 280 278 - 271 273 Critical Hdwy 4.17 4.1 7.1 6.5 6.2 7.27 6.67 6.37 Critical Hdwy Stg 1 - - 6.1 5.5 - 6.27 5.67 Critical Hdwy Stg 2 - 6.1 5.5 - 6.27 5.67 - Follow-up Hdwy 2.263 2.2 3.5 4 3.3 3.653 4.153 3.453 Pot Cap-1 Maneuver 1512 1302 496 487 818 425 423 945 Stage 1 - - 803 737 - 698 655 - Stage 2 - - 731 684 - 703 657 - Platoon blocked, % Mov Cap-1 Maneuver 1491 1278 444 433 788 321 376 926 Mov Cap-2 Maneuver - - - - 444 433 - 321 376 - Stage 1 - 788 723 - 694 594 - Stage 2 - 652 620 - 573 645 - Approach EB WB NS SB HCM Control Delay, s 0 5.4 13.7 15.3 HCM LOS B C Minor LanelMaior (vivmt NBLn1 EBL NI ;EN WBL WBT WBR SBLn1 Capacity (veh/h) 617 1491 - 1278 364 HCM Lane V/C Ratio 0.33 - - 0.085 - 0.04 HCM Control Delay (s) 13.7 0 - 8.1 0 15.3 HCM Lane LOS B A - A A C HCM 95th %tile Q(veh) 1.4 0 - 0.3 - 0.1 Federal Way School District - Lake Grove Elementary School 5:00 pm 4/23/2019 2020 Project AM Peak LOS Synchro 8 Report TENW Page 4 HCM 2010 TWSC 4: East Driveway & SW 308th St 4/23/2019 Int Delay, s/veh 1.4 Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SST SBR Vol, veh/h 1 139 8 1 116 4 11 1 18 4 1 2 Conflicting Peds, #/hr 0 0 2 8 0 0 2 0 8 0 0 0 Sign Control Free Free Free Free Free Free Stop Stop Stop Stop Stop Stop RT Channelized - None - None None - None Storage Length Veh in Median Storage, # 0 - 0 0 - 0 Grade, % 6 - -10 - - 6 - - 0 - Peak Hour Factor 92 50 50 50 50 92 50 92 50 92 92 92 Heavy Vehicles, % 2 21 21 4 4 2 0 2 0 2 2 2 Mvmt Flow 1 278 16 2 232 4 22 1 36 4 1 2 Major/Minor Ma or1 Major2 Minorl Minor2 Conflicting Flow All 236 0 0 302 0 0 536 536 302 553 542 236 Stage 1 - - - 296 296 238 238 Stage 2 - 240 240 - 315 304 - Critical Hdwy 4.12 4.14 8.3 7.72 6.8 7.12 6.52 6.22 Critical Hdwy Stg 1 - - - 7.3 6.72 - 6.12 5.52 - Critical Hdwy Stg 2 - - 7.3 6.72 - 6.12 5.52 - Follow-up Hdwy 2.218 2.236 3.5 4.018 3.3 3.518 4.018 3.318 Pot Cap-1 Maneuver 1331 1248 384 377 706 444 447 803 Stage 1 - - 649 605 - 765 708 - Stage 2 - 709 653 696 663 - Platoon blocked, % - Mov Cap-1 Maneuver 1329 1240 378 373 697 416 443 802 Mov Cap-2 Maneuver - - 378 373 - 416 443 - Stage 1 644 600 - 764 707 - Stage 2 - 703 652 - 654 658 - Approach EB WB NB SB HCM Control Delay, s 0 0.1 12.7 12.5 HCM LOS B B Minor Larne/Major MGml NBLn1 EBL EBT EBR W8L WBT WBR SBLnl Capacity (veh/h) 524 1329 - 1240 - 487 HCM Lane V/C Ratio 0.113 0.00.1 - - 0.002 - - 0.016 HCM Control Delay (s) 12.7 7.7 0 - 7.9 0 - 12.5 HCM Lane LOS B A A - A A - B HCM 95th %tile Q(veh) 0.4 0 - - 0 - - 0 Federal Way School District - Lake Grove Elementary School 5:00 pm 4/23/2019 2020 Project AM Peak LOS Synchro 8 Report TENW Page 5 HCM 2010 TWSC 6: 1 st Ave S & SW 308th St/S 308th St 4/23/2019 Intersection Int Delay, s/veh 3.7 Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Vol, veh/h 16 7 86 27 5 3 84 226 20 4 233 18 Conflicting Peds, #/hr 0 0 2 2 0 0 2 0 2 0 0 0 Sign Control Stop Stop Stop Stop Stop Stop Free Free Free Free Free Free RT Channelized - None - None - None - - None Storage Length - - - - 0 - - Veh in Median Storage, # 0 - 0 - - 0 0 Grade, % - -6 - - 3 - - 0 - 0 Peak Hour Factor 93 93 93 93 93 93 93 93 93 93 93 93 Heavy Vehicles, % 11 11 11 3 3 3 3 3 3 3 3 3 Mvmt Flow 17 8 92 29 5 3 90 243 22 4 251 19 Major/Minor Minor2 Minor, Ma or1 Major2 Conflicting Flow All 712 718 264 757 716 256 272 0 0 267 0 0 Stage 1 271 271 - 436 436 - - - - - - - Stage 2 441 447 - 321 280 - - - Critical Hdwy 6.01 5.41 5.71 7.73 7.13 6.53 4.13 4.13 Critical Hdwy Stg 1 5.01 4.41 - 6.73 6.13 - - - - - Critical Hdwy Stg 2 5.01 4.41 - 6.73 6.13 - - - Follow-up Hdwy 3.599 4.099 3.399 3.527 4.027 3.327 2.227 2.227 Pot Cap-1 Maneuver 426 437 787 285 315 764 1286 1291 Stage 1 783 732 - 555 538 - - - Stage 2 670 648 - 653 646 - Platoon blocked, % Mov Cap-1 Maneuver 394 403 784 233 291 763 1284 1291 Mov Cap-2 Maneuver 394 403 - 233 291 - - - Stage 1 727 728 - 515 499 - Stage 2 614 602 - 567 642 - - Approach EB WB NB SB HCM Control Delay, s 11.8 21.5 HCM LOS B C Minor Lane/Maior Mvmt NBL NBT NBR EBLn1WBLn1 SBL SBT SBR Capacity (veh/h) 1284 650 255 1291 HCM Lane V/C Ratio 0.07 0.18 0.148 0.003 - HCM Control Delay (s) 8 11.8 21.5 7.8 0 HCM Lane LOS A - B C A A HCM 95th %tile Q(veh) 0.2 - 0.7 0.5 0 - Federal Way School District - Lake Grove Elementary School 5:00 pm 4/23/2019 2020 Project AM Peak LOS Synchro 8 Report TENW Page 6 HCM 2010 AWSC 1: 8th Ave SW & SW 308th St 4/23/2019 Intersection Intersection Delay, s/veh 7.3 Intersection LOS A Movement EBU EBL EST EBR WBU WBL W8T WBR NBU NBL NBT NBR Vol, veh/h 0 3 16 8 0 10 16 6 0 7 32 5 Peak Hour Factor 0.92 0.83 0.83 0.83 0.92 0.83 0.83 0.83 0.92 0.83 0.83 0.83 Heavy Vehicles, % 2 0 0 0 2 0 0 0 2 0 0 0 Mvmt Flow 0 4 19 10 0 12 19 7 0 8 39 6 Number of Lanes 0 0 1 0 0 0 1 0 0 0 1 0 Approach EB WB NB Opposing Approach WB EB SIB Opposing Lanes 1 1 1 Conflicting Approach Left SIB NB EB Conflicting Lanes Left 1 1 1 Conflicting Approach Right NB SIB WB Conflicting Lanes Right 1 1 1 HCM Control Delay 7.2 7.3 7.3 HCM LOS A A A Lane NOURI M—M 'VVELM SBLn1 Vol Left, % 16% 11 % 31 % 15% Vol Thru, % 73% 59% 50% 72% Vol Right, % 11 % 30% 19% 13% Sign Control Stop Stop Stop Stop Traffic Vol by Lane 44 27 32 47 LT Vol 7 3 10 7 Through Vol 32 16 16 34 RT Vol 5 8 6 6 Lane Flow Rate 53 33 39 57 Geometry Grp 1 1 1 1 Degree of Util (X) 0.059 0.036 0.044 0.063 Departure Headway (Hd) 4.029 3.962 4.064 4.016 Convergence, Y/N Yes Yes Yes Yes Cap 884 896 875 887 Service Time 2.074 2.02 2.118 2.06 HCM Lane V/C Ratio 0.06 0.037 0.045 0.064 HCM Control Delay 7.3 7.2 7.3 7.3 HCM Lane LOS A A A A HCM 95th-tile Q 0.2 0.1 0.1 0.2 Federal Way School District - Lake Grove Elementary School 5:00 pm 4/23/2019 2020 Project PM LOS Synchro 8 Report TENW Page 1 HCM 2010 AWSC 1: 8th Ave SW & SW 308th St Intersection Intersection Delay, slveh Intersection LOS Movement SBU SBL SBT SBR Vol, vehlh 0 7 34 6 Peak Hour Factor 0.92 083 0.83 0.83 Heavy Vehicles, % 2 0 0 0 Mvmt Flow 0 8 41 7 Number of Lanes 0 0 1 0 4/23/2019 AppMch sa Opposing Approach NB Opposing Lanes 1 Conflicting Approach Left WB Conflicting Lanes Left 1 Conflicting Approach Right EB Conflicting Lanes Right 1 HCM Control Delay 7.3 HCM LOS A Lane Federal Way School District - Lake Grove Elementary School 5:00 pm 4/23/2019 2020 Project PM LOS Synchro 8 Report TENW Page 2 HCM 2010 TWSC 2: West Drivewa Ath Ave SW & SW 308th St 4/23/2019 Intersection Int Delay, s/veh 11.6 Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Vol, vehlh 4 54 47 43 57 4 53 6 130 14 7 7 Conflicting Peds, #/hr 28 0 82 145 0 91 82 0 145 91 0 28 Sign Control Free Free free Free Free Free Stop Stop Stop Stop Stop Stop RT Channelized - - None None - - None - - None Storage Length - - - Veh in Median Storage, # - 0 - 0 0 0 Grade, % - 0 - 0 - 0 - 0 - Peak Hour Factor 81 81 81 81 81 81 81 81 81 81 81 81 Heavy Vehicles, % 9 9 9 4 4 4 0 0 0 4 4 4 Mvmt Flow 5 67 58 53 70 5 65 7 160 17 9 9 Major/Minor Majorl Major2 Minorl Minor2 Conflicting Flow All 166 0 0 270 0 0 530 523 386 605 550 24.6 Stage 1 - - - - - 251 251 - 270 270 - Stage 2 - - - 279 272 - 335 280 - Critical Hdwy 4.19 4.14 7.1 6.5 6.2 7.14 6.54 6.24 Critical Hdwy Stg 1 - - 6.1 5.5 - 6.14 5.54 - Critical Hdwy Stg 2 - - 6.1 5.5 - 6.14 5.54 Follow-up Hdwy 2.281 2.236 3.5 4 3.3 3.536 4.036 3.336 Pot Cap-1 Maneuver 1371 1282 463 462 666 407 440 788 Stage 1 - - 758 703 - 731 682 - Stage 2 - - 732 688 - 675 675 - Platoon blocked, % Mov Cap-1 Maneuver 1277 1127 352 356 515 215 339 678 Mov Cap-2 Maneuver - - - - 352 356 - 215 339 - Stage 1 664 616 - 673 599 - Stage 2 - 631 605 - 402 591 - P, PnroaCi EB WB N$ 5B HCM Control Delay, s 0.3 3.5 21.3 19 HCM LOS C C Minor Lane/Major Mvmt NBLn1 EBL EST EBR WBL WBT WBR SBLnl Capacity (veh/h) 450 1277 - 1127 291 HCM Lane V/C Ratio 0.519 0.004 - - 0.047 - 0.119 HCM Control Delay (s) 21.3 7.8 0 - 8.4 0 19 HCM Lane LOS C A A - A A C HCM 95th %tile Q(veh) 2.9 0 - - 0.1 - 0.4 Federal Way School District - Lake Grove Elementary School 5:00 pm 4/23/2019 2020 Project PM LOS Synchro 8 Report TENW Page 4 HCM 2010 TWSC 4: East Driveway & SW 308th St 4/23/2019 Intersecti,.Ln Int Delay, s/veh 0.9 Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Vol, veh/h 11 200 2 4 91 12 2 0 5 6 3 5 Conflicting Peds, #/hr 0 0 19 47 0 0 19 0 47 0 0 0 Sign Control Free Free Free Free Free Free Stop Stop Stop Stop Stop Stop RT Channelized - None None - None - None Storage Length Veh in Median Storage, # 0 0 0 - 0 Grade, % 6 - - -10 - 6 - - 0 - Peak Hour Factor 92 74 74 74 74 92 74 92 74 92 92 92 Heavy Vehicles, % 2 5 5 4 4 2 3 2 3 2 2 2 Mvmt Flow 12 270 3 5 123 13 3 0 7 7 3 5 MajorlMinor Majorl Major2 Minorl Minor2 Conflicting Flow All 136 0 0 320 0 0 488 490 366 486 484 148 Stage 1 - - - 343 343 - 140 140 Stage 2 - - 145 147 - 346 344 - Critical Hdwy 4.12 4.14 8.33 7.72 6.83 7.12 6.52 6.22 Critical Hdwy Stg 1 - - - 7.33 6.72 - 6.12 5.52 - Critical Hdwy Stg 2 - 7.33 6.72 - 6.12 5.52 Follow-up Hdwy 2.218 2.236 3.527 4.018 3.327 3.518 4.018 3.318 Pot Cap-1 Maneuver 1448 1229 415 407 637 492 483 899 Stage 1 - - 598 568 - 863 781 - Stage 2 - - 815 738 - 670 637 Platoon blocked, % Mov Cap-1 Maneuver 1425 1181 383 385 588 462 457 885 Mov Cap-2 Maneuver - - 383 385 - 462 457 - Stage 1 569 540 - 854 777 Stage 2 - 790 734 - 630 606 Approach EB WB NB SIB HCM Control Delay, s 0.3 0.3 12.2 11.7 HCM LOS B B Minor Lane/Maior Mvmt N8Ln1 EBL EBT EBR WBL WBT WBR SBLn1 Capacity (veh/h) 510 1425 1181 - 556 HCM Lane V/C Ratio 0.019 0.008 - - 0.005 - - 0.027 HCM Control Delay (s) 12.2 7.5 0 8.1 0 - 11.7 HCM Lane LOS B A A - A A - B HCM 95th %tile Q(veh) 0.1 0 - 0 - - 0.1 Federal Way School District - Lake Grove Elementary School 5:00 pm 4/23/2019 2020 Project PM LOS Synchro 8 Report TENW Page 5 HCM 2010 TWSC 6: 1 st Ave S & SW 308th St/S 308th St 4/23/2019 Intersection Int Delay, s/veh 2.9 Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Vol, veh/h 15 3 70 32 5 2 52 317 35 7 393 10 Conflicting Peds, #/hr 3 0 3 3 0 0 6 0 3 0 0 3 Sign Control Stop Stop Stop Stop Stop Stop Free Free Free Free Free Free RT Channelized None - - None - - None - - None Storage Length - - - - 0 - - _ Veh in Median Storage, # 0 - 0 - - 0 - 0 Grade, % -6 - - 3 - - 0 - 0 Peak Hour Factor 97 97 97 97 97 97 97 97 97 97 97 97 Heavy Vehicles, % 0 0 0 0 0 0 0 0 0 1 1 1 Mvmt Flow 15 3 72 33 5 2 54 327 36 7 405 10 Major/Minor Minor2 Minort Major1 Ma or2 Conflicting Flow All 887 901 419 920 888 351 418 0 0 366 0 0 Stage 1 428 428 - 455 455 - - - - - Stage 2 459 473 - 465 433 - - - Critical Hdwy 5.9 5.3 5.6 7.7 7.1 6.5 4.1 4.11 Critical Hdwy Stg 1 4.9 4.3 - 6.7 6.1 - - Critical Hdwy Stg 2 4.9 4.3 - 6.7 6.1 - - - Follow-up Hdwy 3.5 4 3.3 3.5 4 3.3 2.2 - 2.209 Pot Cap-1 Maneuver 359 378 685 218 246 677 1152 1198 Stage 1 702 678 - 546 530 - - - Stage 2 683 658 - 538 544 - - Platoon blocked, % Mov Cap-1 Maneuver 335 356 680 184 231 674 1146 1195 Mov Cap-2 Maneuver 335 356 - 184 231 - - - - - Stage 1 667 671 - 519 504 - Stage 2 641 625 - 472 538 - ApEroach EB WB NB S8 HCM Control Delay, s 12.6 28 1.1 0.1 HCM LOS B D Minor Lane/Major Mvmt NBL NBT NBR EBLn1WBLn1 SBL SBT SBR Capacity (veh/h) 1146 - 564 196 1195 HCM Lane V/C Ratio 0.047 - - 0.161 0.205 0.006 - HCM Control Delay (s) 8.3 - - 12.6 28 8 0 HCM Lane LOS A - - B D A A HCM 95th %tile Q(veh) 0.1 - - 0.6 0.7 0 - Federal Way School District - Lake Grove Elementary School 5:00 pm 4/23/2019 2020 Project PM LOS Synchro 8 Report TENW Page 6 ATTACHMENT C Future Traffic Volume Estimates IV TENW Cl) N O co W m N E N LL > r+ L C co M d CO Cl) c M � O ` + 0 U V Y L N � 0 � = O Y v NL6 N co W ate„ O a C ai y O m m N LL J V O7 O IL L O N N C O a .N B O. � •N M N N N m 16 L7 m tM } } CM.t. _� c N O I% N n W Ln H amm e i Sb SL LE 09 yy y S m a x v 96 Z 0 OS N M n # m N a m a s s S S w S S S N O O a v t %OL %OL � I%N 5 °0 %0 L m %0 L # VJ o N O 0 0 v o a 0 = 0 y } o v n Ob OL m o v m n � v SS 9Z LE OE Zb Z 0 9b m a rn 9£ 6 � Z9 42 m 6Z � BZ 9 Ob z �N 0 Eb N o D N O n u 0 0 0 0 0 jo. 0 a` i 0 f 0 0 o£ N O V N n � 0 0 o W o o 0 0 o '0 0 0 0 rc w e 0 0 0 NO 0 O 0 0 3 IT 0 0 a o` Oe f w a m � 0 0 3 m 0 0 r m v � m � 0 0 0 0 0 z 0 0 H 0 0 0 0£ T+ m O V N n m N C m .. 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DATE: TO CITY OF FEDERAL WAY COMMUNITY DEVELOPMENT DEPARTMENT DEVELOPMENT REVIEW COMMITTEE TRANSMITTAL September 4, 2019 Soma Chattopadhyah, Public Works Traffic Engineer FROM: Natalie Kamieniecki, Associate Planner FOR DRC MTG. ON: Please provide comments or conditons of approval via email or hard copy FILE NUMBER (s): 19-100178-UP PROJECT NAME: LAKE GROVE ELEMENTARY SCHOOL PROJECT ADDRESS: 303 SW 308TH ST ZONING DISTRICT: RS 7.2 PROJECT DESCRIPTION: Demolition of existing and construction of new elementary school. LAND USE PERMITS: PROJECT CONTACT: RAYVEFIK CBRE/HEERY MATERIALS SUBMITTED: Comment Response Letter Bus Turning Diagram Revised Plan Set I n t LJ g ` u'V r u R[ August 29, 2019 Natalie Kamieniecki City of Federal Way 33325 8th Avenue South Federal Way, WA 98003 RESUBMITTED AUG 3 0 2019 CITY 4F FEDERAL WAY COMMUNMY DEVELOPMENT RE. File #19-100178-00-UP; TECHNICAL REVIEW LETTER #4 Lake Grove Elementary School, 303 S W 30P Street, Federal Way Integrus Project No. 21738.00 y 117 S. Main St, Suite 100 Seattle, WA 98104 Dear Ms. Kamieniecki: 206.628.3137 1 office 206.628.3138 j fax Below are written responses to your technical review letter dated August 16, 2019. A complete plan set with clouds identifying all revisions has been submitted with the written responses. Soma Chattopadhvay, Public Works —Traffic Division The Public Works Traffic Division has finished its review of the submitted materials. The following technical review items must be addressed prior to Public Works approval. 1. Raised crosswalks and curb ramps are required to be designed according to the Americans with Disabilities Act of 1990 (ADA), incorporating the City of Federal Way standards. Please submit a detailed engineering plan addressing these standards. Response: Raised crosswalks added across SW 308TH Street at 4th Ave SW and 2nd Ave SW as coordinated with City of Federal Way. Crosswalks and curb ramps were designed to meet ADA. Details added to C-507and C-508. 2. Please submit a streetlight engineering plan that meets the City of Federal Way streetlight standard. Streetlights will be required on the entire school frontage. Response: Refer to SL-xx drawing series for streetlighting frontage plans. Wattage and luminaire pole number revised. 3. With regards to street parking, please depict how the required sight distance for entry and exit points from the school is met. The parking restriction signs must be installed before school opens. Response: Per meeting between Federal Way Public Schools and City of Federal Way, this comment was addressed in response to technical review comments #3. Striping was adjusted and signage added to restrict on street parking to accommodate required sight distance for entry and exit points from the school. Refer to C-5xx series drawings. sIntegruryni Ms. Natalie Kamieniecki Page 2 August 29, 2019 4. Please depict a clear pedestrian path through the south gate (Type 5 pedestrian swing gate) to the school building. Response: Pedestrian path added from south gate at upper field to top of stairs at center of upper field to provide pedestrian connection to school. 5. In the second row of parking stalls, please relocate the two southwest parking stalls which are conflicting with the school bus turning radius. Response: See attached Bus Turning Diagram, two southwest stalls in second row of parking are not in conflict with bus turning radius. Please feel free to contact me if you have any questions or further clarifications. Sincerely, Sam Schafer, AIA Project Manager INTEGRUS ARCHITECTURE, P.S. Documents: Resubmittal Drawings Bus Turning Exhibit PC: Natalie Kamieniecki, City of Federal Way, Associate Planner Ray Vefik, Federal Way Public Schools i L / 6' ^�AIN LINK K f 13+000�� 771 822.39 - GAS 1, 14 \ RR TIES C01UM CABINET / T IV SW 3087�,i STREET 1 \. y� [I97 -moo \ /o350 l I S ^ C� Fap7{7 FDCO o e ©2018 LPD Engineering PLLC 1932 First Ave, S201, Seateat tle, WA 98103 p. 206.725.1211 f. 206.973,5344 engineering pIIC www.lpdengineering.com 1i 11 I , -` 0 15 30 'o cD \ F Scale 1 "=30' - �.\ � �Illflll111I{ •:�• . , �� � �u��I { I I I 1 I `w 53� wjKA Q � II [. • �� f I f FEDERAL--V i--"UBLIC-','iC.HUUL3-- Description August 27, 2019 Figure SCHOOL BUS TURNING EXHIBIT LAKE GROVE ELEM SCHOOL 1 A RESUBMITTED AUG 3 0 2019 Cri Y OF FEDERAL WAY COMMUNffTY aEVELOFWENT � 1 44%ciry OF �� Federal Way Centered on Opportunity August 16, 2019 Mr. Ray Vefik CERE/I-IEERY 1420 — 5ch Avenue, Suite 1700 Seattle, WA 98101 RVefxk fw s.ax BILE Re: File #19-100178-00-UP; TECHNICAL COMMENT LETTER #4 Lake Grove Elementary School, 303 SW 308th Street, Federal Way Dear Mr. Vefik: CITY HALL 33325 8th Avenue South Federal Way, WA 98003-6325 (253) 835-7000 www.cityoffederalway.com Jim Ferrell, Mayor City staff has completed the review of the resubmitted materials dated August 15, 2019, for the Process III Master Land Use (MLU) application submittal package. Site improvements include the replacement of the Lake Grove Elementary School building, stormwater treatment, play field, parking reconfiguration, and landscaping. TECHNICAL COMMENTS Unless otherwise noted, the following comments provided by staff reviewing your project must be addressed prior to issuance of the administrative site plan decision. Please direct questions regarding any of the technical comments to the appropriate staff representative. PUBLIC WORKS — TRAFFIC DIVISION Soma Chattopadhyay, 253-835-2731, somas a civt ffederalwa .com The Public Works Traffic Division has finished its review of the submitted materials. The following technical review items must be addressed prior to Public Works approval. 1) Raised crosswalks and curb ramps are required to be designed according to the Americans with Disabilities Act of 1990 (ADA), incorpoxating the City of Federal Way standards. Please submit a detailed engineering plan addressing these standards. 2) Please submit a streetlight engineering plan that meets the City of Federal Way streetlight standard. Streetlights will be required on the entire school frontage. 3) With regards to street parking, please depict how the required sight distance for entry and exit points from the school is met. The parking restriction signs must be installed before school opens. 4) Please depict a clear pedestrian path through the south gate (Type 5 pedestrian swing gate) to the school building. 5) In the second row of parking stalls, please relocate the two southwest parking stalls which are conflicting with the school bus turning radius. 19-100178-00-UP Lake Grove Elementary Page I of 2 Doc ID 79515 APPLICATION STATUS The review period for the Use Process III application has stopped and the application is on hold until requested items are resubmitted. When resubmitting requested information, please provide a written response to each of the above -referenced items, four copies of the corrected reports, and four copies of the corrected full size plans that are applicable to the .requested information with the enclosed completed resubmittal form. Pursuant to Federal Way Revised Code 19'.15.050, if an applicant fails to provide additional information to the City within 180 days of being notified that such information is requested, the application shall be deemed null and void and the City shall have no duty to process, review, or issue any decisions with respect to such an application. If you have any questions regarding this letter or your development project, please do not hesitate to contact me at 253-835-2638, or natahe.kamieniecka ci offederalwa .com. Sincerely, 5for Natalie Kamieniecki Associate Planner cnc: Resubmittal Form, Bulletin #129 c; Brian Davis, Community Development Director Soma Chattopadhyay, Traffic Engineer Kevin Peterson, Senior Engineering Plans Examiner Casey Moore cmunre@lFwVs.nrg Mike Benzien mb nrit:n .fw s.()r 19-100178-00-UP Lake Grove Elementary Page 2 of 2 Doc ID 79515 intEJrus AN CHI iECiUNE .I August 15, 2019 Natalie Kamieniecki City of Federal Way 33325 8th Avenue South Federal Way, WA 98003 RESUBMITTED AUG 15 2019 CITY OF FEDERAL WAY COMMUNRY 5EVE1-ORM� RE, File #19-100178-00-UP; TECHNICAL REVIEW LETTER 0 Lake Grove Elementary School, 303 SW 3081h Street, Federal Way Integrus Project No. 21738.00 117 S. Main St., Suite 100 Seattle, WA 98104 Dear Ms. Kamieniecki: 206.628.3137 office 206.628.3138 fax Below are written responses to your technical review letter dated August 7, 2019. A complete plan set with clouds identifying all revisions has been submitted with the written responses. Soma Chattopadhyay, Public Works — Traffic Division The Public Works Traffic Division has finished its review of the submitted materials. The following technical review items must be addressed prior to Public Works approval. • Please submit streetlight plans according to City of Federal Way streetlight standard. Approximately four streetlights will be needed on the entire school frontage Response: Refer to SL-xx drawing series for streetlighting frontage plans • Please verify/restrict on street parking to have the required sight distance for entry and exit points from the school. Response: Striping adjusted and signage added to restrict on street parking to accommodate required sight distance for entry and exit points from the school. Refer to C-5xx series drawings. Please feel free to contact me if you have any questions or further clarifications. Sincerely, Sam Schafer, AIA Project Manager INTEGRUS ARCHITECTURE, P.S. Documents: Resubmittal Drawings PC: Natalie Kamieniecki, City of Federal Way, Associate Planner Ray Vefik, Federal Way Public Schools CITY OF .A. Federal Way Centered on Opportunity August 7, 2019 Mr. Ray Vefik CBRE/Heery 1420 5th Avenue, Suite 1700 Seattle, WA 98101 n,efikfc_&vps.org CITY HALL 33325 8th Avenue South Federal Way, WA 98003-6325 (253) 835-7000 www. cityoffederalway. com FILE Jim Ferrell, Mayor Re: File #19-100178-00-UP; TECHNICAL COMMENT LETTER #3 Lake Grove Elementary School, 303 SW 308th Street, Federal Way Dear Mr. Vefik: City staff has completed the review of the July 2, 2019, resubmitted materials for your Process III Master Land Use (NET-D application submittal package. Site improvements include the replacement of the Lake Grove Elementary School building, stormwater treatment, play Meld, parking reconfiguration, and landscaping. TECHNICAL COMMENTS Unless otherwise noted, the following comments provided by staff reviewing.your project must be addressed prior to issuing the administrative site plan decision. Please direct questions regarding any of the technical comments to the appropriate staff representative. PUBLIC WORKS —TRAFFIC DIVISION Soma Chattopadhyay, 253-835-2731, soma , 6ytoffederalway-com The Public Works Traffic Division has finished its review of the submitted materials. The following technical review items must be addressed prior to Public Works approval. R Please submit streetlight plans according to City of Federal Way streetlight standard. Approximately four streetlights will be needed on the entire school frontage. ■ Please verify/restrict on street parking to have the required sight distance for entry and exit points from the school. N''Lr. Ray Vefik Page 2 of 2 August 7, 2019 APPLICATION STATUS The review period for the Use Process III application has stopped and the application is on hold until requested items are resubmitted. When resubmitting requested information, please provide a written response to each of the above -referenced items, four copies of the corrected reports, and four copies of the corrected full size plans that are applicable to the requested information with the enclosed completed resubmittal form. Pursuant to FWRC 19.15.050, if an applicant fails to provide additional information to the city within 180 days of being notified that such information is requested, the application shall be deemed null and void and the city shall have no duty to process, review, or issue any decisions with respect to such an application. If you have any questions regarding this letter or your development project, please do not hesitate to contact me at 253-835-2638, or natalie.kamieniecki@cityoffeder-,dway.corn. Sincerely, Natalie Kamieniecki Associate Planner enc: Resubmittal Form, Bulletin #129 c: Brian Davis, Community Development Director Soma Chattopadhyay, Traffic Engineer Kevin Peterson, Senior Engineering Plans Examiner Casey Moore cmooreafwps.org Mike Benzien mbcnzien a,fwps.org 19-100178-00-UP Doc. I D. 79447 CITY OF FEDERAL WAY COMMUNITY DEVELOPMENT DEPARTMENT DEVELOPMENT REVIEW COMMITTEE TRANSMITTAL DATE: July 2, 2019 TO: Kevin Peterson, Development Services Soma Chattopadhyay Traffic Engineer Brian Asbury, Lakehaven Water & Sewer District Chris Cahan, South King Fire & Rescue FROM: Natalie Kamieniecki, Associate Planner Please provide comments via email FILE NUMBER(s) : 19-100178-UP PROJECT NAME: LAKE GROVE ELEMENTARY SCHOOL PROJECT ADDRESS: 303 SW 308TH ST ZONING DISTRICT: RS 7.2 PROJECT DESCRIPTION: Demolition of existing and construction of new elementary school. LAND USE PERMITS: PROJECT CONTACT: RAY VEFIK CBRE/HEERY MATERIALS SUBMITTED: Resubmittal Narrative School Bus Turning Diagram and Memo Hazardous Materials Inventory Statement Technical Information Report Plan Set IntE jrursTUgE June 28, 2019 Natalie Kamieniecki City of Federal Way 33325 8th Avenue South Federal Way, WA 98003 RECEIVED JUL 0 1 2019 CITY OF FEDERAL WAY COMMUNITY DEVELOPMENT RE. File #19-100178-00-UP; TECHNICAL REVIEW LETTER #2 Lake Grove Elementary School, 303 SW 308th Street, Federal Way Integrus Project No. 21738.00 117 S. Main St., Suite 100 Seattle, WA 98104 Dear Ms. Kamieniecki: 206.628.3137 office 206.628.3138 fax Below are written responses to your technical review letter dated May 17, 2019. A complete plan set with clouds identifying all revisions has been submitted with the written responses. Natalie Kamieniecki - Planning Division 1. The resubmitted information did riot contain the Hazardous Materials Inventory Statement. Per Federal Way City (FWRC)19.145.490, please fill out and return the enclosed form to complete information required to satisfy critical aquifer recharge area documentation. This can be completed prior to land use approval, or will become a condition placed on the building permit. Response: A Hazardous Materials Inventory Statement is included with this submittal. Kevin Peterson Public Works — Development Services Division TESC Plan and Details Sheets (000.005) 1. The engineer should correct/revise the plans where, in several places, TESC measures are shown to encroach into the tree protection fencing. Response: Tree protection fencing was adjusted to ensure that there are no conflicts with other TESC measures. 2. The westerly construction entrance does not align with the proposed temporary fence gate. Response: The westerly construction entrance now aligns with the proposed temporary fence gates. 3. There is a gate shown to be aligned with 31d Avenue SW; however, there is no temporary construction entrance at this gate. The engineer is advised that the city will likely restrict temporary construction entrances to two locations, maximum. Response: A temporary construction entrance was added to align with the gate across 3rd Ave SW. Three potential temporary construction entrance locations are shown along the north frontage of the school property. One north of the playfield to provide access to the construction job offices and material staging, and two north of the school to provide access to the construction site. Installation and use of construction entrances are per Contractors project phasing. i nt6 jr ups 1G"E Ms. Natalie Kamieniecki Page 2 June 28, 2019 4. TESC and tree protection measures are shown in the existing playfield on the eastern portion of the site; however, it's my understanding that, other than some minor disturbance for lighting, running electrical conduits, and possibly materials storage, this playfield will remain relatively undisturbed. The engineer should, at a minimum, re-evaluate the need for the TESC measures in this area of the project site. Alternatively, if this area of the site will be disturbed/altered to store materials and/or equipment, the area to be disturbed will need to be considered in the sizing of the temporary sediment storage/ treatment facilities Response: The northern portion of the playfield will be used for the Contractors construction job offices and material staging. TESC measures were added to this area, and the sizing of the temporary sediment storage/treatment facilities includes this disturbed area. See the TIR for calculations and mapping. 5. The design storm for the temporary sediment storage/treatment facilities will need to use the 10-year design stone, given the anticipated duration of construction and the area of the site that will be disturbed during demolition and construction activities. Response: The 10-year design storm was used to size the temporary storage/treatment facilities. Calculations are shown in the TIR. 6. Back-up /standby generators will need to be a part of the TESC plan, since sump —pumps are being proposed to convey stormwater to the sediment storage/ treatment facilities. Response: A note was added to the TSEC plan calling for the Contractor to provide back- up/standby generators. 7. Sheet C-105 shows a sediment trap section (detail 8); however, no sediment traps are identified on the plan sheets. Response: Baker tanks were sized and are shown as one option for temporary sediment settling, see TIR for calculations. Detail 8/C-105 showing a sediment trap was removed from the plan sheets. Grading and Drainage Sheets (C201-C211) 1. The following comments refer to the two 54" 'HP Manholes": a. The manhole call -outs refer to Sheet C-211; however, the HP Manhole details are on Sheet C-210. Please address the discrepancy. b. Please provide the manufacturer's product information on these manholes. My online search found no results for a 54" product, only a 48" size. c. Provide documentation that indicates the type of loads that these manholes can withstand. Response: Access manholes have been revised to be a standard Type 2-48" structure. The Flow Control Structure will be a standard Type 2-54" structure. Plans reference Detail 8 on sheet C-205. 1n`e jrusARCNfrrURa Ms. Natalie Kamieniecki Page 3 June 28, 2019 2. Reference a sheet number for the Media filter Drain sections. Response: Plan sheet number references were added to the Media Filter Drain sections on detail sheet C-211. 3. The close proximity of SD#2A to SD#2, and connection to the manifold system, would appear to indicate that detention could be "short-circuited" for flows entering the southern end of the chamber system; whereas, the King County Surface Water Design Manual (KCSWDM) recommends maximizing the distances between inlet and outlet. The engineer should analyze the option of maximizing the distance between the inlet and outlet of these southern area flows. Response: Storm water from the site/offsite, which requires detention, drains into SD#2A, SD#2B and SD#2C before flowing into the isolator row. Storm water exfiltrates out of the isolator row through the rock between the rows then infiltrates into the other rows. The manifold shown between SD#2A and SD#2 has an elevated IE which limits bypass of the isolator row to only times of high flows and low sediment load. Hence, not short- circuiting. 4. The reviewer is curious as to the purpose of the "breaks" in the chamber system along the two outer rows or both the east and west sides, when it appears that these tows fully connect and extend the full length of the system. Response: The "breaks" in the chamber systems are to avoid conflict with the new trees located in the parking lot islands. Frontage Grading and Drainage Plan Sheets (C501-0509) 1. The catch basins in the new gutteriine are all shown with solid lids. It seems that grated lids would be a benefit in the event that the openings to the Filterra systems become plugged. Response: Vaned grates replace all the solid lids of the frontage catch basins located in the gutteriine. 2. CB #7 should have a grated lid. Response: CB #7 deleted, CB #8 switched to a Type 2. 3. All grates within the city right-of—way gutteriine shall be vaned grates. Response: All grates within the City ROW gutteriine have been revised to be vaned grates. 4. Please specify the type of pipe proposed in the right-of-way. Response: Pipe types within right-of-way were added on pipe call -outs. (CU) -C AB C HI TE C TU AE Ms. Natalie Kamieniecki Page 4 June 28, 2019 5. The sawcutlpaving line at the east end of the improvements on South 3080, Street shall be "squared -off" (the half -street paving shall extend along the centerline to approx. STA 19+42, and not have a short "L" shape). Response: Sawcut line has been revised to be "squared-ofr 6. All existing street signage shall be accounted for (preserved, relocated, removed, etc.) as appropriate and noted as such on the plans. Response: All existing signage has been accounted for on plans (relocated, removed, etc.) as appropriate and noted as such on the plans. 7. Revise the cross-section on Sheet C-504 to match the plans, and per the city Type S street section. Response: Cross-section on Sheet C-504 was updated to match city's Type S street section. (CU) Landscape Plans 1. Street trees shall be selected from the city approved street tree list for a Type S roadway. Response: Street tree type and size has been revised to meet the COFW standards. Refer to L201, L202, and L205. 2. Street trees shall be 2.5-4nch caliper, per city standards. Response: Street tree type and size has been revised to meet the COFW standards. Refer to L201, L202, and L205. 3. Include a street tree planting detail (city drawing A3-29) in the plans/detail sheets. Response: Standard Detail 3-29 has been added, including the root barrier. Refer to L205. 4. Per city standards, sod grass is required in the street -side planter strip. Response: Planting strip specifies sod, refer to L201 and L202. Landscape Plans 1. A separate electrical plan will be required for street lights, as part of the final building permit plan set. Response: See Sheet El01 for street lighting plan. n \e jrus T UHE Ms. Natalie Kamieniecki Page 5 June 28, 2019 Soma Chaitooadhyay, Public Works — Traffic Division The Public Works Traffic Division has finished its review of the submitted materials. The following technical review items must be addressed prior to Public Works approval. ■ Modify the cross section of the SW 308th Street to Type S as showing in the plan. Plan and cross section are not matched. Identify the crosswalks which are moved from the existing location and show how much those are shifted. Response: Cross-section on Sheet C-504 was updated to match city's Type S street section. (CU) ■ The gate on the south of the property is vehicular access and not the pedestrian access gate. Provide pedestrian connectivity from the south of the school through a south gate (Type 4). Response: The referenced gate on the south has been corrected to refer to a Type 5 Pedestrian Gate and was not intended to be for vehicular access. Refer to sheet L104. Provide a school bus turning diagram at the driveway and adjacent street intersections to ensure school buses can enter, maneuver, and leave the site wideout encroaching onto opposing traffic lanes, or mounting a curb. Please note, the turning template for S-BUS-40 does not match the actual school buses that the school district is currently using. The dimensions for the BUS-40 would be comparable to CITY -BUS. Please show the 30-foot width and turning radius of the bus driveway is adequate for a CITY BUS. Response: The school bus entry/exit was widened to 40' and the power pole at the NE comer of 4th Ave SW, and SW 308th Street was relocated. Using the school bus type "City Bus", turning diagrams for the bus driveway and adjacent street intersections were prepared, see attached. They show the school buses can enter, maneuver, and leave the site/adjacent street intersections without encroaching onto opposing traffic lanes, or mounting a curb. • The existing crosswalk south of the 4th Avenue SW/west driveway is removed, but the TIA has addressed the crosswalk. Please show or justify the removal of the south crosswalk showing pedestrian connectivity and safety. Response: At the south leg of SW 308th Streett4th Ave SW intersection, the existing asphalt driveway is replaced with a concrete driveway approach which connects the new 5' sidewalk heading east to the existing asphalt path heading west. This maintains/facilitates pedestrian conductivity and safety through the south leg of the intersection. ■ A streetlight plan is required according to the city standard. Response: See Sheet E101 for street lighting plan. Ms. Natalie Kamieniecki Page 6 June 28, 2019 Please feel free to contact me if you have any questions or further clarifications. Sincerely, Sam Schafer, AIA Project Manager INTEGRUS ARCHITECTURE, P.S. Documents: ResubmKW Drawings Revised TIR Hazardous materials inventory statement Bus Turning Exhibit Pc: Natalie Kamieniecki, City of Federal Way, Associate Planner Ray Vefik, Federal Way Public Schools CITY OF Federal Way Centered on Opportunity May 17, 2019 Mr. Ray Vefik CBRE/Heery 1420 5th Avenue, Suite 1700 Seattle, WA 98101 rvehk@Lns.org CITY HALL 33325 8th Avenue South Federal Way, WA 98003-6325 (253) 835-7000 www.cityoffederalway.com Jim Ferrell, Mayor FILE Re: File #19-100178-UP; Technical Review Letter #2 Lake Grove Elementary School, 303 SW 308th Street, Federal Way Dear Mr. Vefik: City staff has completed the review of the April 30, 2019, resubmitted materials for your Process III Master Land Use (MI.U) application submittal package. Site improvements include the replacement of the Lake Grove Elementary School building, stormwater treatment, play field, parking reconfiguration, and landscaping. TECHNICAL COMMENTS Unless otherwise noted, the following comments provided by staff reviewing your project must be addressed prior to issuing the administrative site plan decision. Please direct questions regarding any of the technical comments to the appropriate staff representative. COMMUNITY DEVELOPMENT — PLANNING DIVISION Natalie Kamieniecki, 253-835-2638, natalie.kamieniecki@cityoffederalway.com 1) The resubmitted information did not contain the Hazardous Materials Inventory Statement. Per Federal Way Oily Code (FWRC) 19.145.490, please fill out and return the enclosed form to complete information required to satisfy critical aquifer recharge area documentation. This can be completed prior to land use approval, or will became a condition placed on the building permit. PUBLIC WORKS — DEVELOPMENT SERVICES DIVISION Kevin Peterson, 253-835-2734, kevin.peterson@cityoffederalway.com TESC Plan and Details Sheets (Cl 00-Cl05) — 1) The engineer should correct/revise the plans where, in several places, TESC measures are shown to encroach into the tree protection fencing. 2) The westerly construction entrance does not align with the proposed temporary fence gate. Mr. Ray Vefik Page 2 of 4 May 17, 2019 3) There is a gate shown to be aligned with 3rd Avenue SW; however, there is no temporary construction entrance at this gate. The engineer is advised that the city will likely restrict temporary construction entrances to two locations, maximum. 4) TESC and tree protection measures are shown in the existing playfield on the eastern portion of the site; however, it's my understanding that, other than some minor disturbance for lighting, running electrical conduits, and possibly, materials storage, this playfield will remain relatively undisturbed. The engineer should, at a minimum, re-evaluate the need for the TESC measures in this area of the project site. Alternatively, if this area of the site will be disturbed/altered to store materials and/or equipment, the area to be disturbed will need to be considered in the sizing of the temporary sediment storage/treatment facilities. 5) The design storm for the temporary sediment storage/treatment facilities will need to use the 10-year design storm, given the anticipated duration of construction and the area of the site that will be disturbed during demolition and construction activities. 6) Back-up/standby generators will need to be a part of the TESC plan, since sump -pumps are being proposed to convey stormwater to the sediment storage/treatment facilities. 7) Sheet C-105 shows a sediment trap section (detail 8); however, no sediment traps are identified on the plan sheets. Grading and Drainage Sheets (C201-C211) — 1) The following comments refer to the two 54" "HP Manholes": a. The manhole call -outs refer to Sheet C-211; however, the HP Manhole details are on Sheet C-210. Please address the discrepancy. b. Please provide the manufacturer's product information on these manholes. My online search found no results for a 54" product, only a 48" size. c. Provide documentation that indicates the type of loads that these manholes can withstand. 2) Reference a sheet number for the Media Filter Drain sections. 3) The close proximity of SD#2A to SD#2, and connection to the manifold system, would appear to indicate that detention could be "short-circuited" for flows entering the southern end of the chamber system; whereas, the King County Surface Water Design Manual (KCSWDM) recommends maximizing the distances between inlet and outlet. The engineer should analyze the option of maximizing the distance between the inlet and outlet of these southern area flows. 4) The reviewer is curious as to the purpose of the "breaks" in the chamber system along the two outer rows on both the east and west sides, when it appears that these rows fully connect and extend the full length of the system. Frontage Grading and Drainage Plan Sheets (C501-0509) — 1) The catch basins in the new gutterline are all shown with solid lids. It seems that grated lids would be a benefit in the event that the openings to the Filterra systems become plugged. 2) CB #7 should have a grated lid. 3) All grates within the city right-of-way gutterline shall be vaned grates. 19-100178-00-UP Doc. I.D. 79169 A Mr. Ray Vefik Page 3 of 4 May 17, 2019 4) Please specify the type of pipe proposed in the right-of-way. 5) The sawcut/paving line at the east end of the improvements on South 3Mh Street shall be "squared -off' (the half -street paving shall extend along the centerline to approx. STA 19+42, and not have a short "L" shape). 6) All existing street signage shall be accounted for (preserved, relocated, removed, etc.) as appropriate and noted as such on the plans. 7) Revise the cross-section on Sheet C-504 to match the plans, and per the city Type S street section. Landscape Plans — 1) Street trees shall be selected from the city approved street tree list for a Type S roadway. 2) Street trees shall be 2.5-inch caliper, per city standards. 3) Include a street tree planting detail (city drawing #3-29) in the plans/detail sheets. 4) Per city standards, sod grass is required in the street -side planter strip. Electrical Plan — 1) A separate electrical plan will be required for street lights, as part of the final building permit plan set. PUBLIC WORKS — TRAFFIC DIVISION Soma Chattopadhyay, 253-835-2731, somas@ciy .offederalway.com The Public Works Traffic Division has finished its review of the submitted materials. The following technical review items must be addressed prior to Public Works approval. • Modify the cross section of the SW 3081h Street to Type S as showing in the plan. Plan and cross section are not matched. Identify the crosswalks which are moved from the existing location and show how much those are shifted. • The gate on the south of the property is vehicular access and not the pedestrian access gate. Provide pedestrian connectivity, from the south of the school through a south gate (Type 4). • Provide a school bus turning diagram at the driveway and adjacent street intersections to ensure school buses can enter, maneuver, and leave the site without encroaching onto opposing traffic lanes, or mounting a curb. Please note, the turning template for S-BUS-40 does not match the actual school buses that the school district is currently using. The dimensions for the BUS-40 would be comparable to CITY - BUS. Please show the 30-foot width and turning radius of the bus driveway is adequate for a CITY BUS. • The existing crosswalk south of the +h Avenue SW/west driveway is removed, but the TLA has addressed the crosswalk. Please show or justify the removal of the south crosswalk showing pedestrian connectivity and safety. • A streetlight plan is required according to the city standard. 19-100178-00-UP Doc. LD. 79169 Mr. Ray Vefik Page 4of4 May 17, 2019 APPLICATION STATUS The review period for the Use Process III application has stopped and the application is on hold until requested items are resubmitted. When resubmitting requested information, please provide a written response to each of the above -referenced items, four copies of corrected reports, and six copies of corrected full size plans with the enclosed completed resubmitea form. Note: enlargement plans are not needed. The overall site plans/landscape plans provide sufficient details. Pursuant to FWRC 19.15.050, if an applicant fails to provide additional information to the city within 180 days of being notified that such information is requested, the application shall be deemed null and void and the city shall have no duty to process, review, or issue any decisions with respect to such an application. If you have any questions regarding this letter or your development project, please contact me at 253-835- 2638, or natalie.kamienieck @ cityoffederalway.com. Sincerely, Natalie Kamieniecki Associate Planner enc: Hazardous Materials Inventory Statement, Bulletin #56 Resubmittal Information Form, Bulletin #129 c: Brian Davis, Community Development Director Soma Chattopadhyay, Traffic Engineer Kevin Peterson, Development Services Casey Moorecrnnorg@LVP'-()rg Mille Benzien mbesizien a EvpaoSL 19-100178-00-UP Doc. I.D. 79169 CITY OF FEDERAL WAY COMMUNITY DEVELOPMENT DEPARTMENT DEVELOPMENT REVIEW COMMITTEE TRANSMITTAL (ftrp -60, DATE: May 2, 2019 TO: Kevin Peterson, Development Services Soma Chattopadhyay, Traffic Engineer Brian Asbury, Lakehaven Water & Sewer District Chris Cahan, South King Fire & Rescue FROM: Natalie Kamieniecki, Associate Planner FOR DRC MTG. ON: Please provide technical comments via email FILE NUMBER(s): 19-100178-UP PROJECT NAME: LAKE GROVE ELEMENTARY SCHOOL PROJECT ADDRESS: 303 SW 308TH ST ZONING DISTRICT: RS 7.2 PROJECT DESCRIPTION: Construction of new elementary school. PROJECT CONTACT: RAY VEFIK CBRE/HEERY MATERIALS SUBMITTED: Revised Plan Set, Revised Technical Information Report, Revised Traffic Impact Analysis, Updated SEPA Memos, Subsurface Investigation Report dated 9-24-19, Arsenic and Lead Contamination Report, dated 10-17-19, Hazardous Materials Inventory Statement, Developer Extension Agreement, Certificate of Water Availability, Certificate of Sewer Availability, Geotechnical Report and Response Letter, Site Development Stormwater Letter from FWPS, Site Development Stormwater Letter from LPD Engineers (in TIA), Underground Detention System Deviation Request Letter, Access to SWR Enclosure memo, Site Access and Safe Routes to School Memo If you did not receive a document listed above and need a copy please let me know. - RESUBMITTED � i FEB 12 2019 "' CITY aEDERAL P& ANCNIfFC7UHi ,30MMUN 7F FD LC Lake Grove Elementary. School Federal Way Public Schools Height Exemption Narrative 19.200.090 Height Exemption Narrative per FRWC 19.200.090 Special Regulation Notes 12 and 17 The new Lake Grove Elementary School projects seeks exemptions for the building height under special regulation notes 12 and 17 of FRWC 19.200.090. The project complies with special regulations 12 and 17 as noted below: FRWC 19.200.090 special regulations note 12. This use must comply with the requirements of the State Department of Social and Health Services and/or the State Superintendent of Public Instruction. The new Lake Grove Elementary School meets all the requirements of the Office of Superintendent of Public Instruction (OSPI) and the spectrum of activities involved in the planning, design, and construction of school facilities including all activities necessary to create a cost-effective school project. The project is in conformance with the requirements of the State Construction Assistance and Project Forms to receive state funds for school planning, design, and construction. Federal Way Public Schools has conducted a Study and Survey in conformance with OSPI requirements, developed Educational Specifications and District Standards that reflect the goals and objectives set forth in the Study and Survey document, continued Advanced Planning for anticipating future needs, and obtained financing through a capital improvements campaign. Federal Way Public Schools has facilitated a design process that incorporates all planning, specifications, studies, codes, and regulations required to design and construct a school that meets the high-performance standards of Washington State Sustainable Schools Protocols (WSSP). The project meets OSPI requirements to be eligible for state funding to create instructional space for unhoused students based upon current and projected enrollment of Federal Way Public Schools. The new Lake Grove Elementary School meet the safety standards for public school facilities under RCW 28A.525.055. FRWC 19.200.090 special regulations note 17. Minor and supporting structures constructed as a functional requirement of schools may exceed the applicable height limitation; provided, that the director of community development services determines that such structures will not significantly impact adjacent properties. The requirements for school buildings per the Office of Superintendent of Public Instruction (OSPI) include designing to the criteria of Washington Sustainable Schools Protocol (WSSP) and creates a condition that exceeds the applicable height limitations listed in FRWC 19.200.090. Per Section S1.6 of WSSP, the guidelines require the design of a building footprint that does not exceed 60% of the total building square footage. This requirement of reducing the building footprint minimizes the area of the site permanently disturbed by the building. The new Lake Grove Elementary School utilizes multi -story design to achieve this requirement and to help preserve existing open space. Combining the strategies of reducing building footprint and minimizing parking to code minimum decreases the negative effects of the built environment on the existing ecosystems and creates more open space for school and public activities. The classroom spaces of the school are stacked to create a more sustainable design, the height classrooms match the height required in the gymnasium spaced. The gymnasium is located more than 100 feet from an adjacent residential zone, meeting the height requirements of FRWC 19.200,090. Additionally, the building employs a dual outside air (DOAS) mechanical system, housed in the supporting structure of the mechanical attic located centrally above the classroom wings, to meet energy requirements for a more efficient mechanical system design to meet Washington State Energy Code (WSEC) section C406.1 and energy requirements of Washington Sustainable Schools Protocol. The project is seeking exception to the height limitations based upon the requirements of OSPI and WSSP listed above. 117 S. Main Street, Suite 100 - Seattle, WA 98104 • 206.628.3137 FAX 206.628.3138 A Professional Service Corporation with offices in Seattle and Spokane AE5UBMIT "ED F+ B A z TENW G� �F FED � WA Transportation Engineering North West ��,� 0rry p yELOPM February 5, 2019 City of Federal Way Attn: Mike Benzien Subject: Explanation of Differences in SEPA and MUP TIA's Dear Mike: It has been brought to our attention there are slight discrepancies- in reported delay at study intersections between our Traffic Impact Studies for several elementary schools currently under review by the City of Federal Way, and the SEPA checklist information published by the School District. These slight discrepancies in reported intersection or approach delay generally are less than 1 .0 second per vehicle and have no bearing or change in conclusion used in the SEPA determination or traffic analysis, but reflect a conversion in application of our traffic analysis software in our preliminary traffic analysis performed in October 2018 (use of Synchro version 6) versus the submitted Traffic Impact Analysis reports in November 2018 in final form that applied Synchro version 8. Please feel free to call me with any questions at (206) 361-7333 ext. 10 L Sincerely, Transportalian En ineering NorthWest Rf � /��( Michael J. Read, P. - Principal Transportation Planning I Design j Traffic Impact & Operations PO Box 65254, Seattle, WA 98155 1 Office (206) 361-7333 Attachment A LOS/Queuing Analysis of Axis Apartments Driveway onto SR 99 January 23, 2012 CITY OF Federal Way Centered on Opportunity March 14, 2019 Mr. Ray Vefik CBRE/Heery 1420 5th Avenue, Suite 1700 Seattle, WA 98101 nefik@fsEps.com Re: File #19-100178-UP; TECHNICAL REVIEW LETTER Lake Grove Elementary School, 303 SW 308th Street, Federal Way Dear Mr. Vefik: CITY HALL 33325 8th Avenue South Federal Way, WA 98003-6325 (253) 835-7000 www. cityoffederalway.. com Jim Ferrell, Mayor FILE City staff has completed the initial review of your Process III Master Land Use (MLU) application submittal package. Site improvements include the replacement of the Lake Grove Elementary School building, stormwater treatment, play field, parking reconfiguration, and landscaping. TECHNICAL COMMENTS Unless otherwise noted, the following comments provided by staff reviewing your project must be addressed prior to issuing the administrative site plan decision. Please direct questions regarding any of the technical comments to the appropriate staff representative. COMMUNITY DEVELOPMENT — PLANNING DIVISION Natalie Kamieniecki, 253-835-2638, natalie.kamieniecki@cityoffederalway.com 1. Not all reports or documents referenced in the SEPA checklist were provided to the city. Please provide the following reports for the city's files: Subsurface Investigation Report; and PBS Engineering and Environmental, Inc., (9/21) and Soils Analysis to detect the presence of historic arsenic and/or lead contamination. 2. The geotechnical engineering report is preliminary and does not reflect the final site design. The report must contain an analysis specific to the proposed construction and site design. The report cannot be in draft format and must be signed by the geotechnical engineer. 3. The subject property is within the five-year and 10-year wellhead capture zone, which is designated as a critical aquifer recharge area. Per Federal May City Cade (1"WRC) 19.145.490, any proposed development located in critical aquifer recharge areas must submit a hazardous materials inventory statement. As the total landscaped and lawn area exceeds 10,000 square feet, FWRC 19.185.070 requires a management plan for any pesticide and/or herbicides that will potentially be used for the long term care of the development's landscaping. Please provide a hazardous materials inventory statement and an operations and management manual using best management practices (BMPs) and integrated pest management (IPM) for fertilizer and pesticide/herbicide applications. The B1v1Ps shall include recommendations on the quantity, timing, and type of fertilizers applied to lawns and gardens to protect groundwater quality. Mr. Ray Vefik Page 2 of 6 March 14, 2019 4. Pursuant to FWRC 19,125.160, no improvement or structure may be in a required yard except as follows: "(5) Fences and railings not over six feet in height may be located in required yards." Please demarcate clearly where proposed new fencing is located. The fence height must six feet in height, or relocated outside the required yard setbacks, as applicable. In addition, FWRC 19.115.090(1)(0 requires such fencing to contain vinyl -coated mesh, powder -coated poles, dark color(s), and architectural element(s) such as pole caps and/or a decorative grid pattern. Provide the fence details of how this requirement is met. 5. Sheet L200 lists incorrect parking lot landscape calculations. Per FWRC 19.125.070(2), Type IV landscaping is required in the amount of 22 square feet per parking stall when 50 or more parking stalls are provided. A total of 60 parking stalls are provided. Please revise the calculations for required parking lot landscaping. 6. Pedestrian connections from the two parking lots to the school building are needed. Per FWRC 19.115.050(4), all pedestrian pathways through asphalt parking areas require a variation in paved texture and color. Approved methods of delineation include stone, brick or granite pavers, exposed aggregate, or stamped and colored concrete. Please provide a material choice on resubmitted sheets. 7. Please provide either a color rendition of the elevation drawings with a material list, or a color and materials board with the resubmttta. 8. The building design provides alternative methods to organize and shape the structural elements, instead of providing the significant structural modulation stated in FWRC 19.115.100(3). Staff will consider the alternative method to satisfy community design guidelines if all of the following architectural and accessory design elements listed in FWRC 19.115.060(3)(b) are provided along the west elevation: • Window openings with visible trim material, or painted detailing that resembles trim; • Artwork such as mosaics, murals, decorative masonry or metal patterns or grillwork, sculptures, relief, etc., over a substantial portion of the blank wall surface. (The Federal Way arts commission may be used as an advisory body at the discretion of the planning staff); * Architectural features such as setbacks, indentations, overhangs, projections, articulated cornices, bays, reveals, canopies, and awnings; and • Material variations such as colors, brick or metal banding, or textural changes. PUBLIC WORKS — DEVELOPMENT SERVICES DIVISION Kevin Peterson, 253-835-2734, kevin.peterson@cityoffederalway.com SEPA Checklist Section 3.a.1) — The checklist indicates that the site is located near Steel Lake and Lake Dolloff, and within the Hylebos Creek Drainage basin. This is incorrect, as the site is in the Lower Puget Sound drainage basin, and near Mirror Lake. The checklist should be amended to correct this mistake. (Subsequent sections in the checklist do identify the correct drainage basin.) 19-100178-00-UP Doc. I.D. 78709 Mr. Ray Vefik Page 3 of 6 March 14, 2019 Plans and Technical Information Report (TIR) 1) There is insufficient documentation for us to determine if the water quality "Media Filter Drain" systems provide the necessary level of Enhanced Basic Treatment. Additional documentation shall be provided in the TIR that shows these systems provide the level of treatment required. 2) Provide cross -sections of the water quality systems on the plans. 3) Use of underground detention facilities outside of the City Center requires approval from the Public Works Department. 4) The TIR needs to be revised to include a sufficient analysis that shows the detention system(s) has been sized appropriately for the Flood Problem Flow Control criteria. 5) If the underground detention chambers are approved, it appears that large portions of them are, or will be, located in "fill" soils, per the geotechnical report. Additional documentation shall be provided, through further geotechnical evaluation and the manufacturer's recommendations, that shows this type of system is compatible in fill -type soils. 6) If it is determined (through the analysis listed above) that the chamber system can be utilized, then additional information needs to be provided on the plans (in plain view) as to how the chambers are interconnected. 7) The plans show very little stormwater collection and conveyance systems within the new parking lots and other paved areas. It is also unclear how stormwater runoff will be collected and conveyed to the water quality treatment systems. Additional details are required that show how the runoff will be collected and conveyed into these systems. 8) The street improvements shown do not meet city standards; however, the applicant has submitted a request for modification. The city will respond to that request under a separate cover. 9) Access to the Solid Waste and Recycling (SWR) enclosure is through what appears to be a gate that will be controlled by school district personnel. The owner needs to show or describe how waste and recycling personnel and vehicles will access the SWR enclosure. 10) The SWR enclosure shall be provided with a drain in the floor that is connected to the sanitary sewer system. This needs to be shown on the plans. 11) Each civil sheet shall have the following note in bold: NO TEMPORARY CERTIFICATE OF OCCUPANCY (TCO) OR CERTIFICATE OF OCCUPANCY (CO) SHALL BE ISSUED UNTIL ALL STORMWATER AND FRONTAGE IMPROVEMENTS ARE INSTALLED, INSPECTED, AND APPROVED BT THE CITY OF FEDERAL WAY. This condition will also appear on the issued building permit. 19-100178-00-UP Doc. I.D. 78709 Mr. Ray Vefik Page 4of6 March 14, 2019 PUBLIC WORKS — TRAFFIC DIVISION Soma Chattopadhyay, 253-835-2731, somac@,civtoffederalway.com General 1. The information in the SEPA document, the traffic report (TIA), and the submitted plan set should be consistent. For example, the TIA does not address square footage of portables for the existing school, but that is included in the SEPA. The square footage of new construction is different in the SEPA and the TIA. The plan set does not provide the documentation of square footage. 2. The plan set should depict improvements identified in the SEPA document and the TIA. Plans 1. The civil plans must depict the correct frontage improvement (Type S) on South 3081h Street. All improvements shall be within the specified right-of-way. Please note, the submitted Right -of -Way, Street Improvement Modification/Waiver has not been issue by the Public Works Director. 2. Curb ramps at marked crossings must be wholly contained within the crosswalk. Please move the crosswalks in appropriate locations. 3. Provide school bus turning diagrams at the driveways and the intersections South 308th Street and 3,d Avenue S`y/ to ensure the school bus can enter, maneuver, and leave the site without encroaching onto opposing traffic lanes or mounting a curb. 4. The on -site parent drop-off and pick up storage must be designed to accommodate the 951h percentile queues length. Please ensure that queues will not back up onto South 3081h Street during the AM and PM peak hours. 5. The Public Works Traffic Division cannot support the proposed parking restriction on South 308th Street. The school is located in a high density residential neighborhood with planned road incorporate on -street parking. The city would consider parking restrictions due to safety issues, such as sight distance, with supporting documentation. This would be part of street modification request. 6. Please show a non -motorized accessible pedestrian path along the east side of the property and entry gate to connect Lakota Crest residential neighborhood students. 7. The city recommends that a city standard driveway approach with a 40 foot throat width be used. Per FWRC 19.135.270(3), driveway width may be increased in order to provide adequate width for vehicles that may be reasonably expected to use the driveway, as determined by the Public Works Director. Please provide bus turning diagram and street modification request supporting a wider driveway. TIA Review 1. The TIA shows the east driveway (#5) access in a different location than the plan set. Third Avenue SW is aligned with the bus drop off/pick up driveway in the plan set, which is different in the TIA. Please submit the analysis modifying the driveway location according to plan set. 19-100178-00-UP Doc. I.D. 78709 Mr. Ray Vefik Page 5 of 6 March 14, 2019 2. Please correct EB delay (10.9) at intersection #6, SW 305th Street/15C Avenue South in Table 2, page-8. 3. Please correct the total AM Peak Hour trip generation according to ITE 10th edition to 101 trips between 7AM to 9AM. 4. The 95th percentile queue length for 15 minute period is not realistic because we are using average peak hour factor and peak hour volume. Please use the actual highest 15 minute peak to calculate the peak hour factor and volume. 5. Please clarify why the 15 minute peak queue is divided between the bus entrance and the parent drop- off/pick-up driveway. Please provide documentation from data collected driveway and how many buses were within the 11 car queue. SEPA Checklist — Transportation 1. The TIA identified mitigation measures to reduce the project impacts. These mitigation measures should be included in the SEPA document as proposed measures to reduce or control transportation impacts. 2. Verify the specified parking in section 14(d) is consistent with the total provided on the plan set. LAKEHAVEN WATER AND SEWER DISTRICT Brian Ashbury, 253-946-5407, basbury@lakehaven.org Water 9 Lakehaven issued a Water Certificate of Availability for the proposed project/property on February 5, 2019; the certificate is valid for one-year from the date of issuance. 0 Hydraulic model results (FF #344a) for the proposed onsite water distribution system indicate that Lakehaven's standard maximum allowable system liquid velocity of 10 ft/s, at no less than 20 psi, will be exceeded at a fire flow rate above 1,400 GPM. This flow figure depicts the calculated performance of the existing water distribution system under high demand conditions. • A Developer Extension (DE) Agreement was executed between Lakehaven and Federal Way Public Schools on January 9 2019, to manage construction of the proposed onsite water distribution system. However, no water system plans have yet been submitted to Lakehaven to commence the initial DE plan review processes. New onsite water main would connect to the existing water mains in SW 308,h Street. Sewer s Lakehaven issued a Sewer Certificate of Availability for the proposed project/property on February 5, 2019; the certificate is valid for one-year from the date of issuance. • The applicant has proposed a new sewer service connection to an existing onsite grinder pump force main. 19-100178-00-UP Doa LE. 78709 Mr. Ray Vefik Page 6 of 6 March 14, 2019 • A separate Lakehaven Sewer Service Connection Permit is required for each new connection Lo the satulary sewer system or any modification (disconnect, etc.) to an existing sewer service connection, in accordance with standards defined in Lakehaven's current "Fees and Charges Resolution." APPLICATION STATUS The review period for the Use Process III application has stopped and the application is on hold until requested items are resubmitted. When resubmitting requested information, please provide a written response to each of the above -referenced items, four copies of corrected reports, and six copies of corrected full size plans with the enclosed completed resubmittal form. Note: enlargement plans are not needed. The overall site plans/landscape plans provide sufficient details. Pursuant to FWRC 19.15.050, if an applicant fails to provide additional information to the city within 180 days of being notified that such information is requested, the application shall be deemed null and void and the city shall have no duty to process, review, or issue any decisions with respect to such an application. If you have any questions regarding this letter or your development project, please contact me at 253-835- 2638, or natalie.kamieniecki@cityoffederalway.com. Sincerely, Natalie 14-amiernecki Associate Planner enc: Resubmittal Information Handout cr Brian Davis, Community Development Director Kevin Peterson, Development Services Manager Soma Chattopadhyay, Senior Transportation Planning Engineer Brian Asbury, Lakehaven Water & Sewer District Mike Benzien, Federal Way Public Schools, mbenzien@fwps.org 19-160178-00-UP Doc I.D. 78709 CITY OF FEDERAL WAY COMMUNITY DEVELOPMENT DEPARTMENT DEVELOPMENT REVIEW COMMITTEE TRANSMITTAL DATE: January 15, 2019 TO: Cole Elliott, Development Services Manager Greg Kirk, Building Plans Examiner Rick Perez, City Traffic Engineer Brian Asbury, Lakehaven Water & Sewer District Chris Cahan, South King Fire & Rescue Lindsey Sperry, Public Safety Officer FROM: Natalie Kamieniecki, Associate Planner FOR DRC MTG. ON: January.31, 2019 - Internal Completeness Review FILE NUMBER(s): 19-100178-UP RELATED FILE NOS.: 18-104657-PC PROJECT NAME: LAKE GROVE ELEMENTARY SCHOOL PROJECT ADDRESS: 303 SW 308th ST ZONING DISTRICT: RS 7.2 PROJECT DESCRIPTION: Demolition of existing elementary school and construction of a new elementary school building. LAND USE PERMITS: PROCESS III PROJECT CONTACT: RAY VEFIK MATERIALS SUBMITTED: Master Land Use Application Design Standards Narrative Crime Prevention Checklist SEPA MDNS Geotechnical Report Critical Area Map Technical Information Report Traffic Impact Analysis Lakehaven Developer Extension Agreement Title Report Building Elevations and Site Plans RECEIVED CITY OF �_ Federal Way JAN 10 �019 GI Y OF FEDERAL' WAY COMWUNITY DEVELOPMENT MASTER LAND USE APPLICATION DEPARTMENT OF COMMUNITY DEVELOPMENT 33325 8`h Avenue South Federal Way, WA 98003-6325 253-835-2607; Fax 253-835-2609 www.citvo—eralway.com 0)10 APPLICATION NO(s) 9 100 ! i' Date r N ` Project Name Lake Grove Elementary School Property Address/Location 303 SW 308th Street / Federal Way, WA 98023 Parcel Number(s) 0721049180 Project Description PLEASE PRINT Demolish & Replace an existing Elementary School with a newly constructed Elementary School. Type of Permit Required _ Annexation _ Binding Site Plan Boundary Line Adjustment _ Comp Plan/Rezone _ Land Surface Modification _ Lot Line Elimination _ Preapplication Conference _ Process I (Director's Approval) _ Process II (Site Plan Review) X_Process III (Project Approval) _ Process IV (Hearing Examiner's Decision) _ Process V (Quasi -Judicial Rezone) Process VI SEPA w/Project _ SEPA Only Shoreline: Variance/Conditional Use Short Subdivision _ Subdivision Variance: Commercial/Residential Required Information Single Family-1 Unit/7,200 SF R572 Zoning Designation Inge Famt ow ensity ompre cnsive''PPlan Designation $2,827,400 Value of Existing Improvements $27,086,400 Value of Proposed Improvements I nternational Building Code (IBC): Groups E, B, A-3 Occupancy Type Type II-B Construction Type Applicant Name: Federal Way Public Schools Address:1211 South 332nd Street City/State:Federal Way / WA Zip: 98003 Phone: 253-945-5930 Fax:253-945-5959 Email:mbenzien s.o Signature/� - 7 _ 7 Agent (if different than Applicant) Name: CBRE I Heery Address: 1420 Fifth Avenue, Suite 1700 City/State: Seattle / WA Zip: 98101 Phone: 206-835-0473 Fax: None Email: rvefik@fwps.org Signature: Owner Name: Federal Way Public Schools Address: 1211 South 332nd Street City/State: Federal Way / WA Zip:98003 Phone: 253-945-5930 Fax:253-945-5959 Email: mbe ien@fwps.org Signat 1 Bulletin #003 - January 1, 2011 Page 1 of 1 k:\Handouts\A4aster Land Use Application -� Q_ o.'J A OD 4CITY OF §� Federal Way March 5, 2019 Federal Way Public Schools Attn: Mike Benzien 33330 8TH AVE S Federal Way, WA 98003-5433 CITY HALL 33325 8th Avenue South Federal Way, WA 98003-6325 (253) 835-7000 www. cityoffederalway.. com Jim Ferrell, Mayor RE: Permit #19-100559-00-SM; LAKE GROVE ELEMENTARY SCHOOL 303 SW 308TH ST Request to modify street frontage improvements and bus access driveway Dear Mr. Benzien, This letter responds to your request to modify the required street improvements along Southwest 308th Street, which abuts the above -referenced property, as part of the proposal for the redevelopment of Lake Grove Elementary school. After evaluating the existing conditions along the referenced street, review of Federal Way Revised Code (FWRC) provisions (Sections 19.135.070 and 19.135.090) and direction provided by the City Council, the Public Works Department hereby denies your request, as noted below. SW 308th Street is classified as a Minor Collector, corresponding to City Standard Street Section `S', which requires a 36-foot paved roadway (2 10-foot drive lanes with 8-feet of parking on each side), 4-foot planter strips with street trees, 5-foot sidewalks, and 3-foot utility strips with street lights, within a 60-foot right of way. Existing roadway improvements along this property frontage consist of varying widths of pavement, with gravel shoulders on each side. The current roadway striping provides 11-foot wide travel lanes in each direction. The existing right of way width of 60-feet is consistent with the type `S' street section. Immediately to the east of the school property, the existing half -street improvements (measured from Right of Way centerline) on the south side of the roadway, consist of an 18-foot paved section with curb and gutter, a 2-foot planter strip and a 5-foot wide sidewalk. This paved width is consistent with the Type `S' half -street pavement width. Your project is required to construct the half -street improvements meeting City Standard Street Section `S' along the property frontage, and include appropriate tapers and transitions at each end of the improvements. The request also asks that the City allow a 40-foot wide driveway approach for the bus drop-off/pick-up driveway. The engineering plans currently depict a roadway -type driveway approach (with curb returns), that is 40-feet in width. The plans also depict re -striping and re-channelizing SW 308th St for traffic travelling in the westbound direction. This striping/channelization modification appears to be meant to accommodate a bus turning right out of the bus drop-off/pick-up driveway. \\CFWFILE l\Applications\CSDC\PROD\docs\save\ 156156_78828_04135453.DOC The Public Works Department hereby denies your request to modify the street width from 36-feet wide to 28-feet wide. In addition it was noted that the current Land Use packet indicates that the bus access driveway is proposed as a return curb rather than standard commercial driveway access. This modification was not included in the submitted request The Public Works Department hereby reminds the applicant to follow City Standards or apply for a street modification request to modify the bus access driveway from a standard commercial driveway approach to a curb return driveway. 6"' Avenue South Street Pavement Reduction The applicant has identified the request as meeting FWRC 19.135.070 (1) The improvements as required would not be harmonious with existing street improvements, would not function properly or safely or would not be advantageous to the neighborhood or City as a whole. The applicant is requesting a reduction of 6th Avenue South pavement width from 36 feet to 28 feet for a Type "S" Street Section. 6th Avenue South is classified as Collector/Local corresponding to City Standard Section "S". This section consists of 36-foot paved roadway with two 4-foot planter strips, two 5-foot sidewalks and two 3-foot utility strips within a 60-foot right-of-way. Development Services examined the proposed design information provided in the Land Use packet because the street modification was submitted after the Land Use packet. Plan Sheet C506 indicated the street width for 6'h Ave S proposed was 27 feet rather than the 28 feet as requested in the modification. In addition no bus turn modeling was included in the street modification request as support documentation. In addition site visits and review of Google aerial photos indicates that the existing Kingdom Hall of Jehovah's Witnesses uses both sides of the roads for parking. The Public Works Department hereby denies your request to modify the street width from 36-feet wide to 28-feet wide. Sincerely, EJ alsh, P.E. Public Works Director EJW:ss cc: Jennifer Argraves, P.E., LPD Engineering, 1932 lst Ave, Suite 201, Seattle, WA 98101 Project File Day File /n Z W Ld Y I I n] = H W E z a z 3 w n Or li � wZLLI ~ a •' r/ r a z a N O Q o M Ir z H — N� Ir o J O V1 > > r N F m 3 } p Z U) ¢ O¢ a>�• ,'ear• d 7 > U U W N UW w d N H <L O¢J zVI �(L'J¢d' W m¢ W 2 w ',''•, z W z¢LLI I Y M J -10 ¢ (O � m d_ ¢ > >•1,a 'a vi a- ZWw�JIn 3 W� ¢ W /> WO dUl U12 OU 2� OH W Z tr W o cn UI Ina J >< > /> >> a w"ti. 3 W ww 3 w U ao¢ ¢ a o o a r �w�oi So 3� �o0 z of Zw � Z cn JU H U N~V)J ¢ z M W d z , Z FWFW W L !r !r X f y /r �z iN Zz— J>Z Qz �� W lei tj V¢1W V O¢UO UU a- 0 / • r ►t b > �' 0. U wa wi vwi zz W� W o �n m¢I._7m w o w¢ox w ww J z w / / En U m V) U W (jr) U U la_ J ~O N M 't U) w z / / 'rZ r/ z N Q � / w 11 C N 2 h U w . r +��, � • a C CD w `CD ■ ' >•> G � 3 I` wQ x F 0. w w p 0 r a� U .!.. N < o w m ��• �V w w X r w °dr vsa s- w I ' w U Z O �`''w l%i N i � �U •• n �3 Q� •, N� w w K 2� `L z o' KU U -7 1100 y p o Y F- N �- • m% Z a ¢ o t a w of of U Y J m0 CL3 CITY OF 441;& Federal Way PUBLIC WORKS DEPARTMENT STREET MODIFICATION REQUEST / ACTION Project Name Lake Grove Elementary School Rebuild Permit # 19-100173-UP Location 303 SW 308th St Request The applicant is requesting a modification of the required street improvements, asking to eliminate the 8-foot parking lane. The applicant also requests construction of a 40-foot wide driveway to accommodate buses for the bus drop-off/pick-up driveway. Staff Analysis SW 308th Street is classified as a Minor Collector, corresponding to City Standard Street Section `S', which requires a 36-foot paved roadway (2 10-foot drive lanes with 8-feet of parking on each side), 4-foot planter strips, 5-foot sidewalks, and 3-foot utility strips within a 60-foot right of way. Existing roadway improvements along this property frontage consist of varying widths of pavement with gravel shoulders on each side. The current roadway striping provides 11-foot wide drive lanes in each direction. The existing right of way width of 60-feet is consistent with the type `S' street section. Immediately to the east of the school property, the existing half -street improvements (measured from ROW centerline) on the south side of the roadway, consist of an 18-foot paved section with curb and gutter, a 2-foot planter strip and a 5-foot wide sidewalk. The paved width is consistent with the Type `S' half -street width. For the bus drop-off/pick-up driveway, the plans currently depict a roadway -type driveway approach (curb returns), that is 40-feet in width, rather than a City -standard driveway approach. The plans also depict diagonally -hatched striping in the center of the roadway, designed such that traffic travelling in the westbound direction is forced to the right at the 4th Ave SW/SW 308th intersection, then back to the left just past 4th Ave. This striping/channelization is meant to accommodate a bus turning right out of the bus drop-off/pickup driveway. (See the attached Sheet C-600 for the engineer's proposed striping/channelization plan across the entire property frontage.) Their turning diagram for the bus turning right out of the site also shows that the rear wheels of the bus will end up driving over the curb and curb ramp at this driveway. Requirements / Conditions of Approval Based on the engineer's bus turning diagram that indicates traffic in the westbound direction is having to redirect in order to accommodate busses turning right out of the site, staff recommends denying their request to eliminate the 8 additional feet of paving. It would appear that by providing the required 18-feet of pavement on the school side of centerline, there would not be a need to re -stripe or re-channelize the roadway to accommodate buses. Staff also recommends denial of their current driveway configuration (with curb returns) and recommend that a City -standard driveway approach with a 40-foot `throat' width be used. Per FWRC Section 19.135.270 (3) Driveway widths may be increased in order to provide adequate I:\form letters\Stree t Mod Requests\Street Mod Request Form - Lake Grove Elementary.docx Scan completed form into Amanda folder width for vehicles that may ve reasonably expected to use the driveway, as determined by the public works director. I would suggest that we might allow a throat width that is wider than 40- feet, only if the engineer can show through a bus -turning diagram that the additional width is needed for bu0es to exit the driveway and not impact on -coming traffic and/or drive over the curb and gutter. Staff Recommendation: InitialDate Approve Deny Development Services Reviewer 0 Z 2 l9 ❑1 Development Services Manager Z ��_ ❑ Traffic Division Reviewer (Soma) 2s; 4 1 ❑ Traffic Division Manager '2 F b Zo ►5 ❑ Deputy Director �� ❑ Director Decision ��� l `"� ❑ 1:\formletters\Street Mod Requests\Street Mod Request Form - Lake Grove Elementary.docx Scan completed form into Amanda folder I King COUnty Map Mffi r _ IV � r _ ',! ■t �� let L Oft Ik The information included on this map has been compiled by King County staff from a variety of sources and is subject to change without notice. King County makes no representations or warranties, express or implied, as to accuracy, completeness, timeliness, or rights to the use of such information, This document is not intended for use as a survey product King County shall not be liable for any general, special, indirect, incidental, or consequential damages including, but not limited to, lost revenues or lost profits resulting from the use or misuse of the information contained on this map. Any sale of this map or information on this map is prohibited except by written permission of King County. 4 F i r r �+ -+ i - F ;onietry Kin 1'11, King County Date:2/20/2019 N Notes: Kin County y FEB 01 2019 FEDERAL WAY PUBLIC SCHOOLS Each Scholar: A "Ice, A dream. A BRIGHT future, February 1, 2019 EJ Walsh, P.E. Public Works Director 33325 8th Avenue South Federal Way, WA 98003 CITY OF FEDERAL WAY WMMUNm([)EvELOPMENT Department of Maintenance & Operations - Capital Re: Right -of -Way Improvement Modification Request Federal Way Public Schools — take Grove Elementary School Replacement Dear Mr. Walsh: On behalf of the Federal Way Public Schools, we are currently pursuing a Process III approval for the replacement of Lake Grove Elementary School located within the City of Federal Way. This letter is an official written request for a Right -Of -Way Improvement Modification, as provided for in FWCP 19.135.070 (Modifications, Deferments and Waivers), to the City standards along the SW 308th Street frontage summarized in the City of Federal Way Pre - application Conference Summary dated September 6, 2018. Specifically, we are proposing the following Right -Of -Way Improvement Modifications: 1. Eliminate the 8' parking lane along SW 308th Street adjacent to the school. Resulting in a 28' wide pavement section measured face of curb to face of curb, assuming a standard Type S Street Section north of the centerline. Hence, from the centerline of ROW to the school property line, the improvements would include a 10' travel lane, curb and gutter, 4' planter (from face of curb to face of sidewalk) and a 5' sidewalk. 2. Increase driveway width for two-way driveway from a 30-foot standard to 40-feet proposed for the Bus Lot (east) entrance. These modifications are requested for the following FWCP 19.135.070 reason: "1. The improvements as required would not be harmonious with existing street improvements, would not function properly or safely or would not be advantageous to the neighborhood or City as a whole." Federal Way Public Schools ' Each Scholar: A voice. A dream. A BRIGHT Future. 33330 81h Avenue South, Federal Way, WA 98003 1 p.253.945.5965 1 f.253.945.59591 www.fwps.orq FEDERAL WAY PUBLIC SCHOOLS Department of Each Scholar: A voice. A dream. A BRIGHT future. Maintenance & Operations - Capital The first modification proposes to reduce the pavement width for this Type S Street Section from 36' to 28'and would eliminate on -street parking along the south side of SW 308th Street adjacent to the school. This reduction is being requested to reduce the possibility of parents dropping-off/picking-up students along the frontage and to reduce vehicle congestion. Therefore, increasing student supervision and safety. In addition, in the City of Federal Way Pre -application Conference Summary dated September 6, 2018, page 13, item 8, last sentence of paragraph, Public Works Traffic Division, Street Frontage Improvements (FWRC 19.135): "the City would support a modification to accommodate to the roadway cross section and its use to assist the safe and efficient movement of traffic impact with respect to loading/unloading zones and on street parking fronting the school. " The second modification proposes to increase the driveway width for two-way driveway from 30-feet to 40-feet at the Bus Lot (east) entrance, and add block out striping islands at the intersection to allow buses to leave the site eastbound on SW 308th Street without encroaching into opposing traffic lanes or mounting a curb. Therefore, increasing site safety. In addition, in the City of Federal Way Pre -application Conference Summary dated September 6, 2018, page 14, item 14, last sentence of paragraph, Public Works Traffic Division, Street Frontage Improvements (FWRC 19.135): "Driveway widths may be increased in order to provide adequate width for vehicles that may be reasonably expected to use the driveway, as determined by the Public Works Director in response to a street modification requests. " In summary, the City's acceptance of the Right -Of -Way Improvement Modifications listed above, would harmoniously blend with the existing street improvements, function safely and would be advantageous to the neighborhood. Thank you for your consideration and please do not hesitate to contact me if you have any questions or need additional information. Sincerely, Mike Benzien Executive Director Maintenance & Operations Federal Way Public Schools Each Scholar: A voice. A dream. A BRIGHT Future. 33330 81h Avenue South, Federal Way, WA 98003 1 1).253.945.5965 1 f.253.945.59591 www.fwps.orq ��SugN1\;QED ��, Lakehaven � ❑� ���� ���E�� WATER &SEWER DISTRICT Lakehaven Water & Sewer District - Development Engineering Section 31623 - 1st Ave S * PO Box 4249 * Federal Way, WA 98063-4249 Email: DE@Lakehaven.org * Telephone: 253-945-1581 or 253-945-1580 This certificate is intended to provide the applicant, land use agencies &/or public health departments with information necessary to evaluate development proposals. Lakehaven Water & Sewer District, at its sole discretion, reserves the right to delay, or deny, water service based upon capacity &/or supply limitations in Lakehaven's or Other Purveyor's system facilities. Proposed Land Use: ❑ Building Permit-SFR () ❑ Building Permit-MFR () ® Building Permit -Other ❑ Subdivision () ❑ Short Subdivision () ❑ Binding Site Plan ❑ Boundary Line Adjustment ❑ Other (specify/describe) Tax Parcel Number(s): 0721049180 Site Address: 303 SW 3081h St Lakehaven GIS Grid: H-07 Ex. Bldg. Area to Remain: 0 sf {existing to be demolished) New Bldg. Area Proposed: 60,322 sf WA iR SYSTEM IN ORMATIO 1. ❑ Water service can be provided by service connection to an existing " diameter water main that is approximately feet from the site. 2. ® Water service for the site will require an improvement to Lakehaven's water distribution system of: ® a. 45 + - feet of 8" diameter water main to reach the site; and/or ® b. The construction of a water distribution system on the site; and/or ❑ c. A major portion of Lakehaven's comprehensive water system plan would need to be implemented and/or constructed; and/or ® d. Other (describe): Lakehaven Developer Extension DE A reem n re aired. 3. ® a. The existing water system is in conformance with Lakehaven's Comprehensive Water System Plan. ❑ b. The existing water system Is not in conformance with Lakehaven's Comprehensive Water System Plan and an Amendment to this Plan will be required. This may cause a delay in issuance of land use approvals or permits. 4. ® a. The subject property is within the corporate limits of Lakehaven Water & Sewer District, or has been granted Boundary Review Board approval for extension of water service outside of Lakehaven's water service area. ❑ b. Annexation or Boundary Review Board approval will be necessary to provide service. S. Water service is subject to: ® a. Payment of connection charges (to be determined by Lakehaven); ® b. Proof or reservation of easement(s) as required by Lakehaven; ® c. Other: DE Agreement # v r 'ect must be a d by La kehaven prio any do -tc or irrigation service connectio activa�lon. Comments/special conditions: Protect existing water Wor sewer mains during construction. The nearest fire hydrants will located on the Property (number & location TBD by fire marshal). System hydraulic model results (FF #344a, copy attached) indicate that Lakehaven's standard maximum allowable liquid velocity of 10 ft/s in the existing (and proposed new onsite) water distribution system, at no less than 20 psi is exceeded at a fire flow rate above 3300 GPM. This flow figure depicts the theoretical performance of the water distribution system under high demand conditions. Fire flow rates greater than this may be accommodated through water distribution system improvements, contact Lakehaven for additional information. 538 Pressure Zone Est. Meter Elevation(s)-GIS: 352+/-, Est. Pressure Range at Meter(s) (psi): 71-80 I hereby certify that the above water system information is true. This certification shall be valid for one (1) year from the date of signature. Name: BRIAN ASBURY Title: DEVELOPMENT ENGINEERING P V SOR U Signature: Date: v 0721049180 wtr.docx (Form Update 12/28/18) Page 1 of 2 1788900420 - 0549 554 1889005F0 17$890043�'ffff- 30555 { 7 30560 �788900540 tu 178890fl�14U� _ 5t'sti )788900534 17f38SU04 0 30567 _ 30572 178890048�30573, 30700 1 7i a 9-0 0110 17 8900 70 3070E ' �178SR 0491341 J ` .. `P i8900690 EF5000434a � il[IOi148fI -' F eQ-0o0S�aj � >3Q7�Q x�aoaaIIssa' 1�4 20648—_ 2Z817 30 I 3a610 617 >Lf $2a I- 30$23 �'a ,-A 00490 60000610 iw 17889007 a 00008 — f000a Baaaa50 _._ 305565—�P-5E$ DIPit, 1 3611251 6318890071a 30e29••• C -I — 303L2 F6£t000036 - QL32f EPODO0870 - -�- -meat I II000590 eDa0a783 30637 !� a0 1 00 .��� —_ 5000051 � � � BOa008Bt� 12 8890072 a IFBSOOtI{75$0 h( -�afl003�0 S 30643 6fl00079 30643 F BO 110 30839 80044_2 —3�err2- ---- r 30642 i � — 8600II085µ1 1 M90073 ,epapa 80• 65HOO570*, 30651 4 30649 6B000Q80 4^q� 57� -F5E80000 4 306-06000OS4� f68OOaa 55BQaa05rS[] 000810 a7Q�;90074� - 3065 f 30857 :p858 30657 = I� 0005- 44 68306513 858 Boa {8OD008?DI� — 80j 160 r( 30654 Lr 1. Q Ex. Wtr Svcs CID m #101784, 2" Domestic #30355, 2" Irrigation ¢ 0721049244 ,ff 30809 w p7?1C484 I 303 Ex. 8 n FP Hydra nt (tYP) 6" ACj 0721049003 - 414 °p 072104924 30 a � 31003 41 1f 0 $ t38aa 50p 1 5840 30 180 p 200 41 0 " 418 0 R-G 661 8 4165 01Q ,k ,,•C 0721049112 31 45` ' 240 441M 1Y, — 1 7 41.8800090 41 00 80 31057 1058OP300 169 19 41 0026 07 1049 04 41 6800080 c �58.0 410 31075 20 a0 30 U07 a � Y1644 f�680 340 MOTE: L.akehaven ►dater and SAkver District neither warrants nor guarantees the accuracy of any facility information provided_ Facility loration5 and conditions are subjecttofield verification. Water Certificate of Availability "' Parcel 0721049180 a 10a I-Aja Feet VV2019 KCYv1 0721049180 wtr.docx (Form Update 12/28/18) Page 2 of 2 LAKEHAVEN WATER 8r SEWER DISTRICT - DEVELOPER EXTENSION PROJECTS Preliminary Estimate - Deposits, Fees and Charges (2018 Schedule) Property Within the City of Federal Way (8.4% Imposed Excise Tax) = Includes CityFW Excise Tax ' = SuU act I❑ Additional Cr i=W Excise Tax Project: LAKE GROVE ELEMENTARY SCHOOL - PO 18802267 Date: 10/22/18 Prepared by: BIA Project No.: 6318020 DESCRIPTION CURRENT I I AMOUNT TIME PAID I ESTIMATED I Water Amount ESTIMATED Sewer Amount DEVELOPER EXTENSIONS (DE -MAINLINE) 'Developer Pre-Zlesign Appllcai on $500 00 Fee With Application $542.00 _ Developer Extension Agreement Application 0*Fee + $2,000 00 $1600 **Deposit $2.033 60 . Charge(s) Payable in Lieu of Extension - Water *Charge(s) Payable in Lieu of Extension - Sewer *Developer Latecomer Charge(s) - Water *Developer Latecomer Charge(s) - Sewer *Temporary Connection [Earlycomer[ Charge - Water *'Tempos Connection Earlycomer] Char e - Sewer Variable charge(s). Project & property specific Prior to scheduling the Preconstruction Meeting "'DE Acceptance Guarantee - Water [Optional] **DE Acceptance Guarantee - Sewer (Optional] P [ P 1 $4,000,00 Deposit $2,900,00 Waived for Public Agencies "DE Warranty Inspection - Water "DE Warranty Inspection - Sewer $330.00 $620,00 Fee Prior to Project gcce farce $357 72 DEVELOPER EXTENSION (DE-MA)NLINE SUBTOTALS $2.933.32 $0 G SERVICE CONNECTIONS ewer ervlce connection Fermit $280 00 Fee Prior to Issuance of Service Connection Permit $303.52 'Water Meter Installation: iDevelo er Installed Service Connections with Lakehaven Installed Meter(s) FIRE-PROTECTION/FLOW-DETECTION per meter 5/8 per meter 5/8" w/Meter Adapters per meter V. per meter 1" w/Meter Adapters per meter I % " per meter 1Y"w/Meter Adapters PRELIM. DOMESTIC SIZE per meter 2 per meter 3" PRELIM. DOMESTIC SIZE per meter 4" $430.00 $460.00 $490.00 $710.00 $680.00 $1,030,00 $800.00 $2,380,00 $2.990.00 *Charge $466.12 $868.32 $3,245.34 Water Service Connection Installation: Lakehaven Installed Services and Meters per service connection 5/8' per service connection 1' per service connection 1'/: per service connection 2' per service connection 3 per service connection 4" per service connection 6" per service connection 8" $4,190.00 $4,430.00 $5,350.00 $5,830.00 $30,630.00 $33,620.00 $39.300.00 $45.480.00 —Deposit *Service Connection Agreement(s) - P6v. PS Temp. Service etc, $150, j[y C s 'County Document Recording Feels) Based on # of Pa es 'R' hEafiv Construction PwMR .C4 of Federal W $770.00 Fee "Capital Facilities Charge: jper Equivalent Residential Unit - ERU _` __ Water: Lakehaven Service Area applications Sewer: Lakehaven Service Area applications Sewer: Midwa Sewer District Service Area a lications $3,707,00 $3,509.00 $2,063.00 per ERU 'Temporary onnec Ion arycomer arge - e es ay Ity enter - ewer $2.670.00 r ERU ERU CALCULATION(S) ERU amounts for Non -Residential domestic & Irrigation service connections are determined by Lakehaven using estimated domestic water usage flgums provided by the ownerfappllcant. One (1) ERU Is equivalent to an annual average of 24e gals/day of water usage and 210 gpd of associated sewer discharge (from domestic only). A71 properties with service connections will be responsible for any rental capacity charges for water usage and/or sewage discharge, as applicable, that exceeds the respective water or sewer system capacity purohasedlcredltedlallocated for the property for each billing cycle. The rate(s) for any such excess water usage I sewage discharge will be as set by Lakehaven's Board of Commissioners, and will be in addition to the standard base and volume charges. SERVICE CONNECTION(S) SUSTOTALS1 $4,579781 $303.62 TOTAL PROJECT ESTIMATE: WATER $7,513.10 TOTALPROJE CT ESTIMATE! SEWER $303.5 The above figures are estimates based upon the information available at the time of preparation. Any change in project scope, requirements, plumbing code revisions, etc., may render these estimates inaccurate. Actual service connection charges shall be calculated at time application for service connection is submitted. Fees and charges are typically reviewed annually, and are subject to change without notice. NOTES: All deposits are held against and applied to actual Lakehaven labor and material costs associated with the project, including Lakehaven overhead. Actual costs for developer extension (DE) projects / processing are dependent on the size and complexity of the project, and there is no precise method of estimating total actual project, All DE project accounts will be analyzed regularly. Invoices are issued monthly, when appropriate, with payment due as noted on the invoice(s) and the account must be kept current to avoid suspension of project activities &/or other penalties, t1 akehaVOR WAFER & SEINER DISTRICT Hydraulic Model Fire Flow Estimate Request/Reporting Form Requested By: Date: Federal Way Public Schools 7/20/18 Location to be Modeled: proposed Hydrants for Lake Grove Elementary Lakehaven % Section Grid: H/6 Intersection: SW 308t' St & 3rd Ave SW Add. Description: See attached map Pressure Zone: 538 Results By: Date: Model Run No.: John BowmanAb 7/26/18 Master Water System Model 2007.net FF #344a Condition Pressure (psi) Flow (gpm) Static 69 0 Fire Flow 20 3300 NOTES: Lakehaven's adopted level of service goals for fire flow rates are 1000 gpin within single family residential areas (including duplexes) and 2500 gpm for multi -family, commercial, industrial areas. Model results depict the theoretical performance of the water system under high demand conditions and are not guaranteed to represent actual system performance. A design professional should be consulted for site specific design purposes. The calculated fire flow capacity in the above table is based on a currently available residual system pressure of 20 psi at the location modeled. The model indicates that Lakehaven's standard maximum allowable velocity of 8 Ns (for design) is exceeded at a fire flow rate above 1400 gpm. Fire flow capacities greater than 1400 gpm may be accommodated through water system improvements. 072618FF 344a- Lake Grove (Form Update 1/6/17) a \ � \e q. FEDERAL WAY SCHOOL D,TSRIC T LAKE GROVE KgmmYsHOo Imm !� 'O [QS \� . �\W�zne_= r .� -4"_--- Lakehaven e 511EWER CERTIFICATE OF AVAILABILITY' Lakehaven Water & Sewer District - Development Engineering Section 31623 - 1st Ave S * PO Box 4249 * Federal Way, WA 98063-4249 Telephone: 253-945-1581 or 253-945-1580 * Email: DE@Lakehaven.org This certificate is intended to provide the applicant, land use agencies &/or public health departments with information necessary to evaluate development proposals. Lakehaven Water & Sewer District, at its sole discretion, reserves the right to delay, or deny, sewer service based upon capacity &/or supply limitations in Lakehaven's or Other Purveyor's system facilities. Proposed Land Use: ❑ Building Permit-SFR Q ❑ Building Permit-MFR () ® Building Permit -Other ❑ Subdivision Q ❑ Short Subdivision () ❑ Binding Site Plan ❑ Boundary Line Adjustment ❑ Other (specify/describe) Tax Parcel Number(s): 0721049180 Site Address: 303 SW 308' St Lakehaven GIS Grid: H-07 Ex. Bldg. Area to Remain: ❑ sf(existing to be demQl1sh_ed_1 New Bldg. Area Proposed: 60,322 sf SEWERS STEM INFORMATION 1. ® sewer service can be provided by service connection to an existing 5" diameter sewer main that is located on the site and the sewer system has the capacity to serve the proposed land use. 2. ❑ Sewer service for the site will require an improvement to Lakehaven's sanitary sewer system of: ❑ a. feet of " diameter sewer main or trunk to reach the site; and/or ❑ b. The construction of a sanitary sewer collection system on the site; and/or ❑ c. A major portion of Lakehaven's comprehensive wastewater system plan would need to be implemented and/or constructed; and/or ❑ d. Other (describe): 3. ® a. The existing sewer system is in conformance with Lakehaven's Comprehensive Wastewater System Plan. ❑ b. The existing sewer system is not in conformance with Lakehaven's Comprehensive Wastewater System Plan and an Amendment to this Plan will be required. This may cause a delay in issuance of land use approvals or permits. 4. ® a. The proposed site land use is within the corporate limits of Lakehaven Water & Sewer District, or has been granted Boundary Review Board approval for extension of sewer service outside of Lakehaven's sewer service area. ❑ b. Annexation or Boundary Review Board approval will be necessary to provide service. S. Sewer service is subject to: ® a. Payment of connection charges (to be determined by Lakehaven); ❑ b. Proof or reservation of easement(s) as required by Lakehaven; ® c. Other: Sewer service connectionpermits required (one to disconnect existing,r -co ct new). Comments/special conditions: The site has one (1) existing sewer connection (SSCP 51a2 loco ' rs unkn wn. I hereby certify that the above sewer system information is true. This certification shall be valid for one (1) year from the date of signature. Name: BRIAN ASBURY Title: DEVELOPMENT INEERING SUPERVIS G � � Signature: Date: 0721049180 swr.docx (Form Update 12/28/18) Page 1 of 2 F33 6500 00500 uuuuauu �ovuu urru :wuu aoi 17889D0540 30831 �� �0 �$ 3Ef 9 17s8900710 e2$ 30561 30552 tWB0000590 SbM. 0780 5a5000D8701 17$8900530 [17 0OD510 30637 30036 30537 007204~�-- — EC 30raS7 3D634Fb8000079D 0D00860588 30642 0306438030642 30843 [{i O073D= 0�'�17-88900520 3D573 74 __ 55P,OD00570 556D000800 30651 4 ```--- _ 30649 Iq 30650 1788900510 E1788900750 a 9000530 30705 tt568 065 390 30650 55500005clt ev 5560 ODD 810� OOD 7 ti 1798900500 _ 06 30653 30657 30658 `-- 30657 555 00054D 30713 5560000400 �iB4O000830556OD00550 30859 $ 30883 D30684 c0 �30P,53 0011B1 416 — Sw 3087H $r 125 r-_514-kk— r , r f , , 0721049244 30809 f r r 0721049180 ,r 303 fr r 07210490 ? J 414 r, ---__----_-------- ----------�'-{fNkfr 072104924t. 30911 0721049112 240 410 iE; Lakehaven Water and Setiver riot neither %varrants nor guarantees accuracy of any facility information tided Facility locations and conditions suhjeettofieki verbcation. 0721049180 swr.docx (Form Update 12/28/18) 41WBO0120 20 31003 41 801 41 4186 D01 an 180 31027 92 41�E .p 416880010031045418680009031057R168800080 31075 Sewer Certificate of Availability Parcel 0721049180 0 100 200 Feel 66so 16D 1 310 M PL 1 41 0 270 1871 R7 21512019 KCM. Page 2 of 2 RESUBMITTED LAKE GROVE ELEMENTARY SCHOOL — PO 18802267 APR 3 0 2019 Lakehaven Project No. 6318020 OOGMMdf4" 6EVE OMEN AGREEMENT THIS AGREEMENT, entered into in duplicate between the LAKEHAVEN WATER AND SEWER DISTRICT, King County, a municipal corporation of the State of Washington, hereinafter referred to as "the District" and FEDERAL WAY PUBLIC SCHOOLS, hereinafter referred to as "the Developer". WITNESSETH: WHEREAS, the District operates and maintains a water distribution system within its boundaries which can serve property of the Developer, and WHEREAS, the Developer desires to construct certain water mains and appurtenances at its own cost to serve the Developer's property, for delivery to and operation by the District, NOW, THEREFORE, IT IS HEREBY AGREED that: 1. The land for which domestic water service is requested and to which this Agreement applies, is realty in King County, Washington, legally described in Exhibit "A" and generally depicted in Exhibit "B", attached hereto and by this reference incorporated herein. By executing this Agreement, the Developer represents and warrants that it is the owner of record of the above -described property. If such representation of ownership is invalid, this Agreement shall be void as to the portion of the property not owned by the Developer. The Developer agrees that the District may require the Developer to furnish a title report for the property at the Developer's expense. 2. All newly created legal descriptions shall be furnished by the Developer and shall be stamped and signed by a professional land surveyor licensed in the State of Washington. Each newly created legal description shall be accompanied by a drawing that graphically depicts the legal description. 3. The Developer has paid the required deposit as set forth in District Resolution No. 2017-1300, or any subsequent amendment thereto. Said deposit shall be applied against actual expenses of the District, including all bacteriological testing and sampling. The District shall determine, on a regular basis, its actual costs associated with the project, including taxes, and shall submit to the Developer an invoice to repay the District for actual costs in excess of the amount previously collected. Payment shall be due as noted on said invoice. Off -hours labor, including overhead, costs for such inspections will be charged to the project on an DE Agr-6318020.docx (Form Update 12/19/17) Page 1 of 8 overtime basis. The Developer agrees that the project account shall remain current for the life of the project and delinquency of any kind shall induce work stop action/orders, suspension/termination of service or any other action necessary to effect collection of monies owed the District. In the event monies are owed the District for work on, or unpaid charges allocated to, the project, as determined by the District, Developer agrees that the District shall be entitled to recover such monies by withholding and making application for payment to itself, any assignment of funds, cash deposits or latecomer reimbursements otherwise owing to the Developer. In the event that the deposit exceeds the District's actual expenses, the District shall issue to the Developer, at project closing, a refund of such unused amounts. 4. Except as noted herein, all work conducted by the District will be performed during normal work hours. The Developer may, at their discretion, submit a written request to the District for District non-exempt staff to expend overtime for tasks and services related to the completion of this Agreement. Said written request(s) shall state the Developer's reasons for the request(s) that would qualify it as an "emergency" (e.g., "excessive" additional expenses for any delays in plan review (actual/estimated figures should be provided), approaching unfavorable weather conditions for construction, permit expirations, etc.). Each written request submitted to the District for this purpose should also specify any component limitations the Developer desires (e.g., request for plan review/approval, request for construction inspections, etc.). S. In the event work and construction described herein is not completed within five (5) years from the date of application for this Agreement, said application date being OCTOBER 5, 2018, the District can terminate the Agreement without notice, the Agreement shall then be void, and a new Developer Extension Agreement Application, along with applicable fee, will be required to re -commence and subsequently complete said work. 6. It is agreed by the parties that time is of the essence in all matters relating to the performance of this Agreement. 7. The Developer agrees that all requests for modification to District standards, specifications, policies or Resolution shall be submitted in writing to the District. Such requests shall be reviewed and the District will provide a written response to each submitted written request. S. The District shall review final plans and specifications for water distribution system construction to be performed by the Developer under this Agreement. If preliminary plans are not deemed acceptable by the District, the Developer shall be obligated to revise the plans and specifications in accordance with design standards deemed acceptable by the District. In the event that more than three (3) items are found to remain deficient by the District on the third submittal of plans, subsequent review by District staff may be billed at a factor of 1.5 times the standard rate without further notice to the Developer. The Developer shall submit final plans for construction in AutoCAD format (on disk or via email attachment), and on standard print media (24"x36" or 22"x34" size), prior to scheduling the preconstruction meeting. After the Developer has been notified in writing by the District that final plans and specifications have been approved, and all other necessary items have been addressed and resolved, the Developer and the Developer's contractor shall meet with the District's representatives for a preconstruction meeting before construction is commenced. DE Agr-6318020.docx (Form Update 12/19/17) Page 2 of 8 9. The Developer agrees that it shall be responsible for providing to the District accurate and reliable information concerning the actual location of the facilities constructed. In furtherance of this obligation, the Developer shall procure from LPE ENGINEERING PLLC, or other licensed engineer or surveyor that the Developer has indicated will be consulting on the construction phase of the project, a written statement, which shall be submitted to the District prior to scheduling the preconstruction meeting, stating that accurate data will be collected during construction of the facilities to enable the engineer/surveyor to submit actual and reliable "as -built" locations to the District, based upon the information available to the engineer/surveyor during construction and also by field survey of the constructed facilities that are accessible at the ground surface. The Developer shall cause such engineer/surveyor to submit to the District, prior to scheduling the preconstruction meeting, a certificate of insurance for the engineer's/surveyor's Errors and Omissions policy. 'The Developer shall also cause such engineer/surveyor to submit to the District, prior to scheduling the preconstruction meeting, a certificate of insurance and a copy of an endorsement to the engineer's/surveyor's General Liability policy, naming the District as an additional insured as respects the obligations set forth in this section. The limits for Errors and Omissions and General Liability Insurance shall not be less than $1,000,000.00 for each claim; $1,000,000.00 aggregate. At the conclusion of construction and prior to and as a condition of acceptance, the engineer/surveyor shall deliver to the District its certification that it has made periodic field investigations and measurements during construction and that the "as -built" drawings submitted to the District, which drawings shall be provided in AutoCAD format (on disk or via email attachment) and on original or fixed -line photo mylar, are accurate and reliable. The District shall have the right to approve any change in the consulting engineer or surveyor during the project and the Developer agrees that the District may refuse any change in the consulting engineer or surveyor or may condition the same on resubmittal of the certification of location described above. No approval of any new engineer or surveyor shall be unreasonably withheld by the District. 10. The District will make application for the CITY OF FEDERAL WAY 'Right-of-way Construction Permit(s)'. The Developer acknowledges familiarity with the provisions of such Right-of-way Construction Permit(s) and agrees that it or its contractor's failure to comply with any of the provisions of the permit(s) shall entitle the District, in addition to the right to enforce any other remedy available to the CITY OF FEDERAL WAY as the permitting party, to immediately stop all construction activity on the right-of-way until the violation or violations have been eliminated and corrected to the satisfaction of the District and the District should not be held liable for any damages, either direct or indirect, for the delay and expense of such work stoppage. The Developer shall procure all other state, county and city licenses or permits. 11. The Developer agrees this Agreement shall create twenty -foot (20') wide [pipe(s) offset five -feet (5') from nearest margin] non-exclusive easement areas and right-of- way granted to the District for water distribution facilities and all appurtenances related thereto, as indicated on water facility construction plans approved by the District for the project, respectively, through, over and across the Developer's property. This easement shall be maintained in full force and effect unless superseded and replaced by another easement as determined acceptable by the District. 12. In the event an easement is required over realty other than realty described in Paragraphs No. 1 & No. 11 herein, such easement, in form acceptable to the District, together with title report or other sufficient proof of ownership of such realty, shall be delivered to the DE Agr-6318020.docx (Form Update 12/19/17) Page 3 of 8 District prior to scheduling the preconstruction meeting. The Developer shall be obligated to obtain a written release from any property owner across whose property construction is performed pursuant to the grant of an easement, sufficient to indicate that the site restoration on the easement is satisfactory and complete. 13. Prior to scheduling the preconstruction meeting, the Developer shall deliver to the District a restoration performance bond in a sum to be determined by the District after receipt of any required Right -of -Way Construction Permit(s) and/or after the determination of off -site restoration requirements related to the work described herein, conditioned that the Developer will restore to the satisfaction of the District, and state, county, and city agencies as applicable, all work to be performed hereunder in public rights -of -way and the District's easements. Form and contents of bond shall be determined by the District. This requirement is waived for public authorities; however, Developer shall be held accountable for any such restoration. Should any restoration work be determined necessary, Developer will be notified to complete the restoration work. If such work is not corrected within the specified time, the District will perform the work and issue an invoice to the Developer. Said invoice shall be paid within thirty (30) days of issue date. 14. Construction shall be performed in accordance with the District's approved plans, standards and specifications and only under the supervision of a licensed contractor experienced in the installation of water distribution system facilities and the related work. 15. Two (2) sets of materials submittals shall be submitted to the District as one package, bound and indexed with a table of contents, for all equipment/material to be furnished for this project. Each submitted piece of equipment/material shall be fully defined by catalog number and reference made as to its applicable section of the District's standard specifications. Materials submittals shall be submitted prior to scheduling the preconstruction meeting. 16. By execution of this Agreement, the District does not guarantee water service will be provided to realty described herein. In the event that any of the District's facilities, such as storage tanks, wells, and water transmission mains become utilized beyond their design or approved capacity or become inoperable for any cause, the District reserves the right to refuse any connections which would use such facility until remedial action has been completed, and the District shall not be liable for any direct or consequential damages which occur to the Developer arising out of such the District's refusal to connect or time delay necessary to take remedial action. 17. The Developer and its agents agree to indemnify and hold the District harmless from any and all claims which may be assessed against the District as a result of the construction or maintenance of the work described in this Agreement prior to acceptance by the District. The Developer shall maintain in full force and effect during the construction period, the following insurance: a. Commercial General Liability Insurance with bodily injury and property damage limits of not less than: $1,000,000.00 Each Occurrence $2,000,000.00 General Aggregate $2,000,000.00 Products -Completed Operations Aggregate Limit DE Agr-6318020.docx (Form Update 12/19/17) Page 4 of 8 b. Business Auto Liability coverage for all owned, non -owned, and hired autos with bodily injury and property damage limits of not less than: $1,000,000.00 Each Accident A certificate of insurance and a copy of an endorsement to the Developer's Commercial General Liability Insurance policy, showing the District as additional insured as respects the work to be performed under this Agreement, shall be provided prior to scheduling the preconstruction meeting. Thirty (30) days written notice shall be given to the District for cancellation or expiration of this insurance. 18. The Developer shall notify the District the date work and construction described in this Agreement will commence, and said notice shall be given not less than 72 hours (not including Saturday, Sunday, or national holidays) prior to such date. No water distribution system facility shall be covered prior to inspection by the District. After work is commenced, it shall vigorously, consistently, and in a first-class workmanlike manner be carried to completion. The Developer shall maintain at the construction area at all times during construction, a representative to whom District notices may be given regarding construction. Said representative shall be designated in writing by the Developer before start of work. The Developer may request inspections during construction upon two (2) days notice to the District. 19. Testing of water system facilities shall be performed as required by the District and only after satisfactory tests have been completed and witnessed by the District's designated agent, will the work be accepted. The Developer agrees that at such time as the District has performed inspection of the water distribution system facilities & system connections and has delivered itemized punch lists to the Developer and/or the Developer's contractor, that the project will be pursued to final completion, including the performance of all necessary site restoration. 20. Upon completion of construction, the Developer or the Developer's contractor shall deliver to the District a guarantee in the amount of ten percent (10%) of construction costs or $5,000.00, whichever is greater, that a reliable contractor will make and pay for repairs necessary within two (2) years from the date of acceptance of said construction, arising from faulty labor or material. Form of guarantee is to be approved by general counsel for the District. This requirement is waived for public authorities; however, Developer shall be held accountable for any such repairs. Should any defects be discovered within the specified 2-year time period, Developer will be notified and given ample time to correct same. If defects are not corrected within the specified time, Lakehaven will perform the work and issue an invoice to the Developer. Said invoice shall be paid within thirty (30) days of issue date. This paragraph shall be valid beyond the release of this Agreement and until the District closes out the associated project account. 21. Upon completion of construction, the Developer shall submit, for acceptance and approval of the District, Bills of Sale for water distribution system facilities, mains and appurtenances installed and constructed pursuant to this Agreement, in a form acceptable to the District, together with such other engineering records and project cost data as may be required by the District. DE Agr-6318020.docx (Form Update 12/19/17) Page 5 of 8 22. As a condition of District acceptance of the project, the Developer shall submit to the District a non-refundable warranty inspection fee for water, as set forth in District Resolution No. 2017-1300, or any subsequent amendment thereto, to be held by the District and applied against actual expenses of the District incurred to complete warranty inspections following the two-year warranty period. 23. In the event new or modified District easements are required over Developer's property described herein, such easements, in form acceptable to the District, shall be delivered to the District as a condition of & prior to the activation of any new or modified service connections for the property. 24. In the event the Developer requests and the District provides water meters for the realty described herein, prior to the District's acceptance of work, the Developer agrees to be solely responsible for any loss or damage to such water meters or their installation, which occurs prior to said acceptance of work by the District. 25. Work and construction performed under this Agreement shall not be connected to the District's water distribution systems until all provisions and requirements of this Agreement and District Resolutions, on the part of the Developer, have been fully complied with. 26. The District and the Developer agree that in carrying out the terms of this contract, the Developer shall be acting as an independent contractor and in no respect shall Developer be deemed an agent or partner of the District. 27. The Developer shall not assign this contract without the written consent of the District. 28. The District shall provide water service following the District's acceptance of the water distribution facilities for operation and maintenance and upon payment of the connection charges as set forth and in accordance with District Resolution No.2017-1300. Said connection charges shall consist of the Capital Facilities Charge (CFC), Service &/or Meter Installation Charge &/or Deposit, and any other such charges levied in accordance with said District Resolution No. 2017-1300 or amendments thereto or any other applicable District Resolution at time service is requested. 29. The parties agree that, if determined applicable by the District, the provision of latecomer reimbursements for system facilities constructed pursuant to this Agreement will be handled by separate agreement to be executed between the parties within a reasonable time following acceptance of the facilities and establishment of the appropriate latecomer reimbursement area by the District's Board of Commissioners. Any applicable latecomer reimbursement period will be limited to 15 years, or longer, pursuant to the provisions of state law. 30. Partial waiver or waiver by acquiescence by the District of any provision or condition of this Agreement shall not be a waiver of any other provision or condition of this Agreement. 31. This Agreement shall constitute an easement and servitude upon the property described herein and shall be binding upon the heirs, assigns and successors in interest to the DE Agr-6318020.docx (Form Update 12/19/17) Page 6 of 8 Developer. This Agreement shall constitute an equitable lien against property described herein and in the event of nonperformance by the Developer, as stated herein, the District may foreclose said lien in the manner authorized by law. 32. This writing constitutes the full and only agreement between the parties, there being no promises, agreements or understandings, written or oral, except as herein set forth, or as hereinafter may be amended in writing. 33. Upon execution of this Agreement, the parties agree in the event either of them is required to enforce any provision or provisions of this Agreement against the other, that the prevailing party shall be entitled, in addition to all other amounts to which it is otherwise entitled by this Agreement, to its actual attorney's fees and costs, including those incurred on appeal. DE Agr-6318020.docx (Form Update 12/19/17) Page 7 of 8 WITNESS our hands and seals. FEDERAL WAY PUBLIC SCHOOLS �__ 1. f. 1111111 j..f. Its Date: State of County of _ 't LAKEHAVEN WATER & SEWER DISTRICT King County, Washington � '), e evelopMent Engineering Manager Dated: This record was acknowledged before me on JQL 8 ?-DI (Da ) by A-/', 'l2r��� �� �r� �b2�J as `-Gt• ucC�eu (Na ) (Type of Authority, Title) of.� (Company Name Mary Lucille Helbling Notary Public State of Washington My Appolntrnent Expires 03/16/2021 For recording in the State of Washington, the Notarial Seal must be fully legible and cannot intrude into document margins. Please affix seal in the space provided. DE Agr-6318020.docx (Form Update 12/19/17) DATED: (Signature) Notary Publ' Title My appointment expires Page 8 of 8 EXHIBIT "A" LEGAL PROPERTY DESCRIPTION BEGINNING AT A POINT 55 FEET EAST OF THE NORTHWEST CORNER OF THE SOUTHEAST 1/4 OF THE NORTHEAST 1/4 OF SECTION 7, TOWNSHIP 21, RANGE 4 EAST, W.M., IN KING COUNTY, WASHINGTON; THENCE SOUTH 01021'07" WEST 420 FEET; THENCE SOUTH 88048'32" EAST 152.90 FEET; THENCE SOUTH 01021102" WEST 135 FEET; THENCE SOUTH 88048'32" EAST 669.49 FEET; THENCE NORTH 01021'07" EAST 555 FEET TO THE NORTH LINE OF SAID SUBDVISION; THENCE NORTH 88048'32" WEST 822.39 FEET TO THE POINT OF BEGINNING; LESS THE NORTH 30 FEET FOR ROAD. TAX PARCEL NO. 07421049180 EXHIBIT "B" PROPERTY DEPICTION { r1798900T740 —cu 5560¢06 0= 0° 3—7�0� fIf `5• `c q 6000U(3U�(-111,fju000 3B ssrcm000sso U 30642 3064 600004230643 30 JJfi0000380 30642 CC60000800 Cc6000080 30645 70 -30650 301 —i 30649 6c 6 50000C30 c560000 90 00000�0 600008100000840�q 306C CC�5830653 306306`7Q — 30657 1788900750 `560000400 l51w60000540LSS�C000550 N 1 30714 306G9 30658 r-50000820 6=60000830066,,3 0084 30663 SW308THSr` Ef Lakehaven WATER & SEWER DISTRICT 316271st Avenue South a P.O. Box 4249 = Federai Wa% WA 98063-4249 253-941-1516 Federal Way o 253-927-2922 Tacoma www.lakehaven.org October 23, 2018 Mike Benzien FWPS 1211 South 332nd Street Federal Way, Washington 98003 RE: LAKE GROVE ELEMENTARY SCHOOL — PO 18802267 Lakehaven Project No. 6318020 Mr. Benzien: RECE N Ea JAN 10 2019 CITY OF FEDEPAL WAy COMMUNITY DEVEELOPMEIV7 PO# OCT 2 9 18 RECV BY; INV TO AP: Enclosed is the original Developer Extension (DE) Agreement for the referenced project. Please have the appropriate party, or parties, execute and return the DE Agreement to this office within 30 days from the date of this letter. In accordance with applicable King County rules, please do not make any markings/etc. in the one -inch (1") clear margins of the DE Agreement pages. You will receive a fully executed copy when completed. Lakehaven will process the original DE Agreement for recording. If the executed DE Agreement is not returned within 30 days the project will be suspended without further notice, and a new DE Agreement application (and deposit) to Lakehaven may be required. Execution and return of the DE agreement is required for all Lakehaven plan review tasks/services beyond the initial review. Pursuant to Paragraph 3, the required sum has been submitted to initiate the project. All actual labor and materials expenses, plus overhead, incurred by Lakehaven for the project will be expensed to the project account. Lakehaven will review the project account on a regular basis and issue invoices as necessary to keep the project account current. These invoices (sample enclosed) are due and payable as noted on each invoice and the account shall remain current at all times. PLEASE BE ADVISED THAT IF AN INVOICE PAYMENT IS 30+ DAYS "PAST DUE", THEN ALL WORK ASSOCIATED WITH THE DE PROJECT WILL BE SUSPENDED UNTIL THE "DELINQUENT" INVOICE AMOUNT, INCLUDING ANY INTEREST, IS PAID IN FULL. For projects under construction, please be advised that any work involving existing or future Lakehaven facilities, including any new service connections/stubs, will also be suspended pending receipt of any "delinquent" payment(s). You are required to provide accurate "as -built" data upon completion of construction. To ensure this, a written statement from your professional consultant shall be provided prior to (and as a condition of) scheduling the Lakehaven preconstruction meeting; confirming that accurate data will be collected in the field by said engineer or surveyor, or employee under his/her supervision, during construction. The engineer or surveyor is also required to provide certificates of insurance as set forth in Paragraph 9 of the referenced DE Agreement. It would be helpful if the Lakehaven project number listed above is indicated or referenced on the certificates. You may wish to provide a copy of the DE Agreement to the engineer or surveyor to inform him/her of the specific requirements. Lakehaven has updated the Hydraulic Model Report previously generated for the site (FF #344c, copy attached), to indicate the amount of new 12-inch diameter water main required to achieve the required onsite fire flow requirement of 2,750 GPM. Please have your engineering consultant prepare & submit water plans accordingly. When Lakehaven has declared the plan(s) adequate for approval, one (1) rolled (do not fold) copy of each plan sheet shall be submitted to Lakehaven for approval by Lakehaven (alternatively, the plans submitted for approval can be submitted as PDF files via email attachment(s)). A copy of the approved plan set(s) will be provided to your design engineer, and to your professional consultant for "as-builting" upon completion of construction. Lakehaven will use Mike Benzien — FWPS October 23, 2018 Page 2 copies of the approved plan set(s) for our use and in applying for right-of-way (ROW) construction permits, and other permits and approvals, as necessary. After Lakehaven has approved the plan(s), received all necessary permits and approvals, & all other Lakehaven preconstruction requirements are satisfied; the developer (or designated representative) and developer's utility contractor will be required to meet with Lakehaven representatives for a preconstruction meeting (typically held on the 2nd or 4th Thursdays of the month, 9:00 a.m. or 10:00 a.m.). At the developer's discretion, including any additional or associated costs, the "as -built" consultant and/or the design engineer are welcome & encouraged to attend Lakehaven's preconstruction meeting. Please be advised that any/all construction work &/or assembly of underground piping associated with a non-residential fire protection supply line (from, & including, the premise isolation device vault to/into the building) must be performed by a person holding a valid Washington State "Level U" certification. Enforcement of this standard will be managed by the jurisdictional fire marshal. Lakehaven also requires a (developer's) certificate of insurance in the amounts indicated in Paragraph 17 of the agreement; including Lakehaven as an additional insured. It would be helpful if the Lakehaven project number listed above is indicated or referenced on the certificate. Said certificate must be received by Lakehaven prior to (and as a condition of) scheduling the Lakehaven preconstruction meeting. Lakehaven will not allow any new domestic or irrigation service connections to the water system to be activated until the project is complete and accepted by Lakehaven, or has achieved substantial completion status as determined by Lakehaven. The enclosed cost estimate worksheet is provided for your convenience. Please keep in mind that this estimate is based on information provided with your application and is subject to change as additional information becomes available. Changes in project scope or Lakehaven fees and charges will impact this estimate. Lakehaven fees and charges are subject to change without prior notification. Please read the DE Agreement carefully. Conditions and requirements are detailed and laid out in chronological order for your benefit, as well as for ease of administration. Please refer to the enclosed Project Checklist for items/issues that need to be submitted/resolved/approved prior to scheduling the Lakehaven preconstruction meeting (typically held on the 2nd or 4th Thursdays of the month, 9:00 a.m. or 10:00 a.m.). Please note that in accordance with Section W/S.1.A of Lakehaven's adopted standards, all requests for modifications to Lakehaven's standards, specifications, policies &/or Resolution shall be made in writing (Plan Review Checklist comment, email, letter, or fax) to Lakehaven. Please contact me at BAsbury@Lakehaven.org or 253-946-5407 if you have any questions or need additional information regarding the project or the enclosed DE Agreement. Sincerely, Brian Asbury Development Engineering Su rvisor Enclosures Ec: LPD Engineering PLLC Ray Vefik — FWPS Casey Moore — FWPS Lakehaven- WATER & SEWER DISTRICT LAKE GROVE ELEMENTARY SCHOOL — PO 18802267 Lakehaven Project No. 6318020 AGREEMENT THIS AGREEMENT, entered into in duplicate between the LAKEHAVEN WATER AND SEWER DISTRICT, King County, a municipal corporation of the State of Washington, hereinafter referred to as "the District" and FEDERAL '+ 04V PUBLIC SCHOOLS, hereinafter referred to as "the Developer". WITNESSETH: WHEREAS, the District operates and maintains a water distribution system within its boundaries which can serve property of the Developer, and WHEREAS, the Developer desires to construct certain water mains and appurtenances at its own cost to serve the Developer's property, for delivery to and operation by the District, NOW, THEREFORE, IT IS HEREBY AGREED that: 1. The land for which domestic water service is requested and to which this Agreement applies, is realty in King County, Washington, legally described in Exhibit "A" and generally depicted in Exhibit "B", attached hereto and by this reference incorporated herein. By executing this Agreement, the Developer represents and warrants that it is the owner of record of the above -described property. If such representation of ownership is invalid, this Agreement shall be void as to the portion of the property not owned by the Developer. The Developer agrees that the District may require the Developer to furnish a title report for the property at the Developer's expense. 2. All newly created legal descriptions shall be furnished by the Developer and shall be stamped and signed by a professional land surveyor licensed in the State of Washington. Each newly created legal description shall be accompanied by a drawing that graphically depicts the legal description. 3. The Developer has paid the required deposit as set forth in District Resolution No. 2017-1300, or any subsequent amendment thereto. Said deposit shall be applied against actual expenses of the District, including all bacteriological testing and sampling. The District shall determine, on a regular basis, its actual costs associated with the project, including taxes, and shall submit to the Developer an invoice to repay the District for actual costs in excess of the amount previously collected. Payment shall be due as noted on said invoice. Off -hours labor, including overhead, costs for such inspections will be charged to the project on an DE Agr-6318020.docx (Form Update 12/19/17) Page 1 of 8 overtime basis. The Developer agrees that the project account shall remain current for the life of the project and delinquency of any kind shall induce work stop action/orders, suspension/termination of service or any other action necessary to effect collection of monies owed the District. In the event monies are owed the District for work on, or unpaid charges allocated to, the project, as determined by the District, Developer agrees that the District shall be entitled to recover such monies by withholding and making application for payment to itself, any assignment of funds, cash deposits or latecomer reimbursements otherwise owing to the Developer. In the event that the deposit exceeds the District's actual expenses, the District shall issue to the Developer, at project closing, a refund of such unused amounts. 4. Except as noted herein, all work conducted by the District will be performed during normal work hours. The Developer may, at their discretion, submit a written request to the District for District non-exempt staff to expend overtime for tasks and services related to the completion of this Agreement. Said written request(s) shall state the Developer's reasons for the request(s) that would qualify it as an "emergency" (e.g., "excessive" additional expenses for any delays in plan review (actual/estimated figures should be provided), approaching unfavorable weather conditions for construction, permit expirations, etc.). Each written request submitted to the District for this purpose should also specify any component limitations the Developer desires (e.g., request for plan review/approval, request for construction inspections, etc.). S. In the event work and construction described herein is not completed within five (5) years from the date of application for this Agreement, said application date being OCTOBER 5, 2018, the District can terminate the Agreement without notice, the Agreement shall then be void, and a new Developer Extension Agreement Application, along with applicable fee, will be required to re -commence and subsequently complete said work. 6. It is agreed by the parties that time is of the essence in all matters relating to the performance of this Agreement. 7. The Developer agrees that all requests for modification to District standards, specifications, policies or Resolution shall be submitted in writing to the District. Such requests shall be reviewed and the District will provide a written response to each submitted written req uest. S. The District shall review final plans and specifications for water distribution system construction to be performed by the Developer under this Agreement. If preliminary plans are not deemed acceptable by the District, the Developer shall be obligated to revise the plans and specifications in accordance with design standards deemed acceptable by the District. In the event that more than three (3) items are found to remain deficient by the District on the third submittal of plans, subsequent review by District staff may be billed at a factor of 1.5 times the standard rate without further notice to the Developer. The Developer shall submit final plans for construction in AutoCAD format (on disk or via email attachment), and on standard print media (24"x36" or 22"x34" size), prior to scheduling the preconstruction meeting. After the Developer has been notified in writing by the District that final plans and specifications have been approved, and all other necessary items have been addressed and resolved, the Developer and the Developer's contractor shall meet with the District's representatives for a preconstruction meeting before construction is commenced. DE Agr-6318020.docx (Form Update 12/19/17) Page 2 of 8 9. The Developer agrees that it shall be responsible for providing to the District accurate and reliable information concerning the actual location of the facilities constructed. In furtherance of this obligation, the Developer shall procure from LPE ENGINEERING PLLC, or other licensed engineer or surveyor that the Developer has indicated will be consulting on the construction phase of the project, a written statement, which shall be submitted to the District prior to scheduling the preconstruction meeting, stating that accurate data will be collected during construction of the facilities to enable the engineer/surveyor to submit actual and reliable "as -built" locations to the District, based upon the information available to the engineer/surveyor during construction and also by field survey of the constructed facilities that are accessible at the ground surface. The Developer shall cause such engineer/surveyor to submit to the District, prior to scheduling the preconstruction meeting, a certificate of insurance for the engineer's/surveyor's Errors and Omissions policy. The Developer shall also cause such engineer/surveyor to submit to the District, prior to scheduling the preconstruction meeting, a certificate of insurance and a copy of an endorsement to the engineer's/surveyor's General Liability policy, naming the District as an additional insured as respects the obligations set forth in this section. The limits for Errors and Omissions and General Liability Insurance shall not be less than $1,000,000.00 for each claim; $1,000,000.00 aggregate. At the conclusion of construction and prior to and as a condition of acceptance, the engineer/surveyor shall deliver to the District its certification that it has made periodic field investigations and measurements during construction and that the "as -built" drawings submitted to the District, which drawings shall be provided in AutoCAD format (on disk or via email attachment) and on original or fixed -line photo mylar, are accurate and reliable. The District shall have the right to approve any change in the consulting engineer or surveyor during the project and the Developer, agrees that the District may refuse any change in the consulting engineer or surveyor or may condition the same on resubmittal of the certification of location described above. No approval of any new engineer or surveyor shall be unreasonably withheld by the District. 10. The District will make application for the CITY OF FEDERAL WAY 'Right-of-way Construction Permit(s)'. The Developer acknowledges familiarity with the provisions of such Right-of-way Construction Permit(s) and agrees that it or its contractor's failure to comply with any of the provisions of the permit(s) shall entitle the District, in addition to the right to enforce any other remedy available to the CITY OF FEDERAL WAY as the permitting party, to immediately stop all construction activity on the right-of-way until the violation or violations have been eliminated and corrected to the satisfaction of the District and the District should not be held liable for any damages, either direct or indirect, for the delay and expense of such work stoppage. The Developer shall procure all other state, county and city licenses or permits. 11. The Developer agrees this Agreement shall create twenty -foot (20') wide [pipe(s) offset five -feet (5') from nearest margin] non-exclusive easement areas and right-of- way granted to the District for water distribution facilities and all appurtenances related thereto, as indicated on water facility construction plans approved by the District for the project, respectively, through, over and across the Developer's property. This easement shall be maintained in full force and effect unless superseded and replaced by another easement as determined acceptable by the District. 12. In the event an easement is required over realty other than realty described in Paragraphs No. 1 & No. 11 herein, such easement, in form acceptable to the District, together with title report or other sufficient proof of ownership of such realty, shall be delivered to the DE Agr-6318020.docx (Form Update 12/19/17) Page 3 of 8 District prior to scheduling the preconstruction meeting. The Developer shall be obligated to obtain a written release from any property owner across whose property construction is performed pursuant to the grant of an easement, sufficient to indicate that the site restoration on the easement is satisfactory and complete. 13. Prior to scheduling the preconstruction meeting, the Developer shall deliver to the District a restoration performance bond in a sum to be determined by the District after receipt of any required Right -of -Way Construction Permit(s) and/or after the determination of off -site restoration requirements related to the work described herein, conditioned that the Developer will restore to the satisfaction of the District, and state, county, and city agencies as applicable, all work to be performed hereunder in public rights -of -way and the District's easements. Form and contents of bond shall be determined by the District. This requirement is waived for public authorities; however, Developer shall be held accountable for any such restoration. Should any restoration work be determined necessary, Developer will be notified to complete the restoration work. If such work is not corrected within the specified time, the District will perform the work and issue an invoice to the Developer. Said invoice shall be paid within thirty (30) days of issue date. 14. Construction shall be performed in accordance with the District's approved plans, standards and specifications and only under the supervision of a licensed contractor experienced in the installation of water distribution system facilities and the related work. 15. Two (2) sets of materials submittals shall be submitted to the District as one package, bound and indexed with a table of contents, for all equipment/material to be furnished for this project. Each submitted piece of equipment/material shall be fully defined by catalog number and reference made as to its applicable section of the District's standard specifications. Materials submittals shall be submitted prior to scheduling the preconstruction meeting. 16. By execution of this Agreement, the District does not guarantee water service will be provided to realty described herein. In the event that any of the District's facilities, such as storage tanks, wells, and water transmission mains become utilized beyond their design or approved capacity or become inoperable for any cause, the District reserves the right to refuse any connections which would use such facility until remedial action has been completed, and the District shall not be liable for any direct or consequential damages which occur to the Developer arising out of such the District's refusal to connect or time delay necessary to take remedial action. 17. The Developer and its agents agree to indemnify and hold the District harmless from any and all claims which may be assessed against the District as a result of the construction or maintenance of the work described in this Agreement prior to acceptance by the District. The Developer shall maintain in full force and effect during the construction period, the following insurance: a. Commercial General Liability Insurance with bodily injury and property damage limits of not less than: $1,000,000.00 Each Occurrence $2,000,000.00 General Aggregate $2,000,000.00 Products -Completed Operations Aggregate Limit DE Agr-6318020.docx (Form Update 12/19/17) Page 4 of 8 b. Business Auto Liability coverage for all owned, non -owned, and hired autos with bodily injury and property damage limits of not less than: $1,000,000.00 Each Accident A certificate of insurance and a copy of an endorsement to the Developer's Commercial General Liability Insurance policy, showing the District as additional insured as respects the work to be performed under this Agreement, shall be provided prior to scheduling the preconstruction meeting. Thirty (30) days written notice shall be given to the District for cancellation or expiration of this insurance. 18. The Developer shall notify the District the date work and construction described in this Agreement will commence, and said notice shall be given not less than 72 hours (not including Saturday, Sunday, or national holidays) prior to such date. No water distribution system facility shall be covered prior to inspection by the District. After work is commenced, it shall vigorously, consistently, and in a first-class workmanlike manner be carried to completion. The Developer shall maintain at the construction area at all times during construction, a representative to whom District notices may be given regarding construction. Said representative shall be designated in writing by the Developer before start of work. The Developer may request inspections during construction upon two (2) days notice to the District. 19. Testing of water system facilities shall be performed as required by the District and only after satisfactory tests have been completed and witnessed by the District's designated agent, will the work be accepted. The Developer agrees that at such time as the District has performed inspection of the water distribution system facilities & system connections and has delivered itemized punch lists to the Developer and/or the Developer's contractor, that the project will be pursued to final completion, including the performance of all necessary site restoration. 20. Upon completion of construction, the Developer or the Developer's contractor shall deliver to the District a guarantee in the amount of ten percent (10%) of construction costs or $5,000.00, whichever is greater, that a reliable contractor will make and pay for repairs necessary within two (2) years from the date of acceptance of said construction, arising from faulty labor or material. Form of guarantee is to be approved by general counsel for the District. This requirement is waived for public authorities; however, Developer shall be held accountable for any such repairs. Should any defects be discovered within the specified 2-year time period, Developer will be notified and given ample time to correct same. If defects are not corrected within the specified time, Lakehaven will perform the work and issue an invoice to the Developer. Said invoice shall be paid within thirty (30) days of issue date. This paragraph shall be valid beyond the release of this Agreement and until the District closes out the associated project account. 21. Upon completion of construction, the Developer shall submit, for acceptance and approval of the District, Bills of Sale for water distribution system facilities, mains and appurtenances installed and constructed pursuant to this Agreement, in a form acceptable to the District, together with such other engineering records and project cost data as may be required by the District. DE Agr-6318020.dooc (Form Update 12/19/17) Page 5 of 8 22. As a condition of District acceptance of the project, the Developer shall submit to the District a non-refundable warranty inspection fee for water, as set forth in District Resolution No. 2017-1300, or any subsequent amendment thereto, to be held by the District and applied against actual expenses of the District incurred to complete warranty inspections following the two-year warranty period. 23. In the event new or modified District easements are required over Developer's property described herein, such easements, in form acceptable to the District, shall be delivered to the District as a condition of & prior to the activation of any new or modified service connections for the property. 24. In the event the Developer requests and the District provides water meters for the realty described herein, prior to the District's acceptance of work, the Developer agrees to be solely responsible for any loss or damage to such water meters or their installation, which occurs prior to said acceptance of work by the District. 25. Work and construction performed under this Agreement shall not be connected to the District's water distribution systems until all provisions and requirements of this Agreement and District Resolutions, on the part of the Developer, have been fully complied with. 26. The District and the Developer agree that in carrying out the terms of this contract, the Developer shall be acting as an independent contractor and in no respect shall Developer be deemed an agent or partner of the District. 27. The Developer shall not assign this contract without the written consent of the District. 28. The District shall provide water service following the District's acceptance of the water distribution facilities for operation and maintenance and upon payment of the connection charges as set forth and in accordance with District Resolution No.2017-1300. Said connection charges shall consist of the Capital Facilities Charge (CFC), Service &/or Meter Installation Charge &/or Deposit, and any other such charges levied in accordance with said District Resolution No. 2017-1300 or amendments thereto or any other applicable District Resolution at time service is requested. 29. The parties agree that, if determined applicable by the District, the provision of latecomer reimbursements for system facilities constructed pursuant to this Agreement will be handled by separate agreement to be executed between the parties within a reasonable time following acceptance of the facilities and establishment of the appropriate latecomer reimbursement area by the District's Board of Commissioners. Any applicable latecomer reimbursement period will be limited to 15 years, or longer, pursuant to the provisions of state law. 30. Partial waiver or waiver by acquiescence by the District of any provision or condition of this Agreement shall not be a waiver of any other provision or condition of this Agreement. 31. This Agreement shall constitute an easement and servitude upon the property described herein and shall be binding upon the heirs, assigns and successors in interest to the DE Agr-6318020.docx (Form Update 12/19/17) Page 6 of 8 Developer. This Agreement shall constitute an equitable lien against property described herein and in the event of nonperformance by the Developer, as stated herein, the District may foreclose said lien in the manner authorized by law. 32. This writing constitutes the full and only agreement between the parties, there being no promises, agreements or understandings, written or oral, except as herein set forth, or as hereinafter may be amended in writing. 33. Upon execution of this Agreement, the parties agree in the event either of them is required to enforce any provision or provisions of this Agreement against the other, that the prevailing party shall be entitled, in addition to all other amounts to which it is otherwise entitled by this Agreement, to its actual attorney's fees and costs, including those incurred on appeal. DE Agr-6318020.docx (Form Update 12/19/17) Page 7 of 8 WITNESS our hands and seals. FEDERAL WAY PUBLIC SCHOOLS i I Its Date: f State of �i acts ci ��m County ofl LAKEHAVEN WATER & SEWER DISTRICT King County, Washington evelop ent Engineering Manager Dated: This record was acknowledged before me on �'�- 2-0! (Da e) by as (Na ) 01 (Type of Authority, Title) of (Company Name)[ RAary Lucile Heibfno NaMiy PubNc Swe of W80*K too MyAgpahtnerd Expires 03H6/2M `t� For recording in the State of Washington, the Notarial Seal must be fully legible and cannot intrude into document margins. Please affix seal in the space provided. DE Agr-6318020.docx (Form Update 12/19/17) DATED: Ali (Signature) Notary Publ' Title My appointment expires �/J�/ZO2"J Page 8 of 8 EXHIBIT "A" LEGAL PROPERTY DESCRIPTION BEGINNING AT A POINT 55 FEET EAST OF THE NORTHWEST CORNER OF THE SOUTHEAST 1/4 OF THE NORTHEAST 1/4 OF SECTION 7, TOWNSHIP 21, RANGE 4 EAST, W.M., IN KING COUNTY, WASHINGTON; THENCE SOUTH 01021'07" WEST 420 FEET; THENCE SOUTH 8804832" EAST 152.90 FEET; THENCE SOUTH 01021'02" WEST 135 FEET; THENCE SOUTH 88048132" EAST 669.49 FEET; THENCE NORTH 01021'07" EAST 555 FEET TO THE NORTH LINE OF SAID SUBDVISION; THENCE NORTH 88048132" WEST 822.39 FEET TO THE POINT OF BEGINNING; LESS THE NORTH 30 FEET FOR ROAD. TAX PARCEL NO. 07421049180 PROPERTY DEPICTION 556a.Qaa3701 J97$S�Qa73a 33601000380 II' 30574 _ 305 � w 173890074D 55600a0390 j 30706 30653 '4 ` �1788'84a75o i «FEOaaa4aa 30714 30659 EXHIBIT "B" i 105WU (VD ��tw'uuui9uuI EasMD520' 3G6 3 � 30642 30643 306 ;556fDaaa.37, �-556GGGDS&o e.sQa:QQ,a 300 3Q�1 Q64s` :��anQs3o a— -- 30650 y 35609aa81 Q 5,56aa0a3k.a .6aQQa56a 3a65,7 q 30658 3a657 j r aaEa `56QflQa33,a 3a6L3 `36aaaa82a 5r.5aaaD83a 3a3� 3a664 3a663 SW 308 rn sr � � SAMPLE %NVOICE QNLY — DO NO SUE3WiIT PAYMENT LAKENAIIEN WATER AND SEWER DISTRICT Invoice Date: K 2017 L kl� rraflQ[I Invoice Project# G3 (I"s"des Vwwaffftz mrzx a a02D 17) Due Date: 4/3/2017 Water SubTotal: $2,033.80 Wastewater SubTotal: $2,079_14 Total Amount Due: $4,112.94 Online payments cannot be accepted DEVELOPER NAME COMPANY ADDRESS CITYSTAZIP Pro;ecs:t Pra*t Name 63� Project Charges: 31+Days Last 30 Days LTD Water. S4,386-46 S8.66 $4.395.12 Wastewater S5L%L2 58.91 Yr5.561.43 Total: 59,941.98 S17.57 $9.959.55 Project Payments ar:d GtherCredits: 31+Days Last 30 Days LTD vvwer: (-2,361.32) $0.00 (52351.32) WastweaaW: �33 485 29 M- Q¢ t53_G� 291 Total: (55.846.61 ) S0.00 (35,3 45.61) Total: $4,112.94 IncludPS accruediaterest charges of 81, 527.97 on previous unpaid balance. For questions, please call 263-_-q4� or sta ! us atEEMJ@a lakeha rer:.org To enSury proper credit to your acCponrpfeaspdei9ch andTotarn this portion with yaurpaymen? Water Amount $1,274.25 Water Interest Charges: 5759-% Invoice Date: 3!3/2017 SewerAmourrt $1,310.72 Proj & ♦ Sewer Interest Charges: $768,42 Total Amount Due: $4,112-94 Due Date: 4/3/2017 Please Pay: $4,112.94 onfrpA payments canner be accepted Please rerrdt payments to: LAKEHAVE WATER AND SEINER DISTRICT PO Box 4249 Federal � �'ay. WA 93053 TIN # 91-M74454 iFarpropercrediling, please pay apy utility Service charges snparatery SAMPLE INVOICE ONLY - DO NOT SUBMIT PAYMENT Lakehaven WATER c& SEWER DISTRICT Hydraulic Model Fire Flow Estimate Request/Reporting Form Requested By: Federal Way Public Schools Date: 10/4/18 Location to be Modeled: proposed Hydrants for Lake Grove Elementary — With Modifications LAehaven'/< Section Grid: H/6 Intersection: SW 308ti' St & 3rd Ave SW Add. Description: See attached map T7_s-71z-ne: 538 Results By: John Bowm Date: 10/16/18 Model Run No.: Master Water System Model2007.net FF #344c Condition Pressure (psi) Flow (gpm) Static 69 0 Fire Flow 20 7200 NOTES: Lakehaven's adopted level of service goals for fire flow rates are 1000 gpm within single family residential areas (including duplexes) and 2500 gpm for multi -family, commercial, industrial areas. Model results depict the theoretical performance of the water system under high demand conditions and are not guaranteed to represent actual system performance. A design professional should be consulted for site specific design purposes. The calculated fire flow capacity in the above table is based on a currently available residual system pressure of 20 psi at the location modeled. The model indicates that Lakehaven's standard maximum allowable velocity of 8 ft/s (for design) is exceeded at a fire flow rate above 2800 gpm. Fire flow capacities greater than 2800 gpm may be accommodated through water system improvements. 101618FF 344c - Lake Grove (Form Update 1/6/17) 1 Lakehaven '' WATER & SEWER DISTRICT 1_ " _A Project Name: LAKE GROVE ELEMENTARY SCHOOL m PO 18802267 project No.: 6318020 Project Tech.: BIA Updated: 10 22 2018 Notes- . Ae Any/all requests for modifications to Lakehaven's standards, specifications, policies &/or resolutions shall be made in writing (Plan Review Checklist comment, email, or letter) to Lakehaven. B. Fees, charges &/or deposits indicated are based on current Lakehaven schedule, are typically reviewed annually, & are subject to change without notice. c i I, 1,: f =0 1 a. �•y � c- _ _ l - — i 11 � .J � : C �� i 0 � � i i - ti "l 1 � —) \_ :. 1 J .� "S i, � '. 3 � k, '. ` ! � � ! PRIOR TO CONSTRUCTION 1 DE Agreement Application & Deposit. 2 DE Agreement executed by Developer. Agreement expires 1015123. 3 Water Plan(s) Approval by Lakehaven. 4 N/A c..weF HaH(. p ,I by 1 aI,eha9eRr 5 AutoCAD Files. 6 As -built Consultant's Guarantee Letter. 7 As -built Consultant's Certificate of Insurance (Errors & Omissions). B As -built Consultant's Certificate of Insurance (General Liability). 9 N A m;.nt(a). 10 N/A 11 ROW Permit - Water. 12 N/A WP It Sewer. 13 N/A site EaseffieRt(s) — Wat{f-. 14 N/A -�; _,ewer. Gf site E-...,..,.,eFit(s) 15 WAIVED Restoration Guarantee - ROW &/or Off -site Easement(s). 16 Material Submittals. 17 Developer's Certificate of Insurance (General & Business Auto Liability). 18 Water/Sewer Utility Contractor Information. 19 IDE Preconstruction Meeting. PRIOR TO SUBSTANTIAL COMPLETION 20 Substantial Completion Request by Developer. 21 Operational Inspections) - Water. 22 N/A Operational lns-3eetie���Sc 23 Construction Record Drawings & AutoCAD Files - Water 24 N / A Gen racruct39n-rceEero-o ra:w-l-;=},,, It@C ca^—ScWc.-r 25 WAIVED Warranty (2-year) Guarantee. 26 Bill of Sale - Water. 27 N/A Bill e f Sale C. weF. 28 N/A 29 On -site Easement. 30 WAIVED DE Acceptance Guarantee(s). 31 WAIVED SubCompl Guarantee. 32 1 SubCompl Agreement executed by Developer. Project Checklist-6318020.x1sx (Form Update 09-01-17) Page 1 of 8 Lakehaven WATER & SEWER DISTRICT i Project Name: LAKE GROVE ELEMENTARY SCHOOL - PO 18802267 Project No.: 6318020 Project Tech.: BIA Updated: 10/22/2018 Notes: A. Any/all requests for modifications to Lakehaven's standards, specifications, policies &/or resolutions shall be made in writing (Plan Review Checklist comment, email, or letter) to Lakehaven. B. Fees, charges &/or deposits indicated are based on current Lakehaven schedule, are typically reviewed annually. & are subject to chance without notice. PRIOR TO ACCEPTANCE BY LAKEHAVEN 33 N/A 34 Acceptance Inspection(s) - Water. 35 N/A ,^sc ptan R ..ecti.-.n(s c fir- -r---' .�-• 36 ROW Permit Release - Water. 37 N/A ROW PeFR9 irRelease SeWer. 38 N/A Off site Easement Resteraatian Rel.-.ase(-Fi 39 N/A . 40 DE Warranty Inspection Fee(s). PRIOR TO PROJECT ACCOUNT INITIAL CLOSEOUT 41 Final DE Project Invoice or Refund. PRIOR TO FINAL PROJECT CLOSEOUT AFTER 2-YEAR WARRANTY PERIOD 42 Warranty Inspection - Water. 43 N/A Project Checklist-6318020.xlsx (Form Update 09-01-17) Page 2 of 8 LakehaveEWER n WATER ITEM # PRO3ECT ITEM DETAILS & DESCRIPTIONS RECORDED FINAL PLAT/BSP/BLA. Copy of the recorded final plat/BSP/BLA. 39 Proposed/preliminary final plat/BSP/BLA documents should be submitted to Lakehaven for review as part of the Substantial Completion process summarized above, to be certain easement requirements are satisfactorily addressed. 40 DE WARRANTY INSPECTION FEE(S). Payment of the applicable DE Warranty Inspection Fees: Water = $330.00 [2017], Sewer = $610.00 [2017]. PRIOR TO PROJECT ACCOUNT INITIAL CLOSEOUT 41 FINAL DE PROJECT INVOICE OR REFUND. Payment by Developer of the final DE project invoice or final project Refund by Lakehaven, whichever is applicable. PRIOR TO FINAL PROJECT CLOSEOUT AFTER 2-YEAR WARRANTY PERIOD WARRANTY INSPECTION - WATER. Satisfactory "Warranty" inspection of the water facilities 42 constructed for the project, including correction of all defects noted during the "Warranty" inspection. If provided notice of any items requiring correction, please contact Lakehaven's assigned project technician, NAME (EMAIL@ Lakehaven.org), to coordinate re -inspection. WARRANTY INSPECTION - SEWER. Satisfactory "Warranty" inspection of the sewer facilities 43 constructed for the project, including correction of all defects noted during the "Warranty" inspection. If provided notice of any items requiring correction, please contact Lakehaven's assigned project technician, NAME (EMAIL@ Lakehaven.org), to coordinate re -inspection. Project Checklist-6318020.xlsx (09-01-17) A. daft0RM600'] WATER & SEWER DISTRICT ITEM PROJECT ITEM DETAILS & DESCRIPTIONS PRIOR TO CONSTRUCTION DE AGREEMENT APPLICATION & DEPOSIT. Submitted by Developer as the initial step in 1 Lakehaven's DE Agreement process. DE AGREEMENT EXECUTED BY DEVELOPER. Developer has executed (i.e., signed with 2 notary) & returned the DE Agreement to Lakehaven. Execution and return of the DE Agreement within 30 days is required or the project will be suspended without further notice, and for all Lakehaven plan review tasks/services beyond an initial review. WATER PLAN(S) APPROVAL BY LAKEHAVEN. Execution and return of the DE Agr is required 3 for all Lakehaven plan review tasks/services beyond an initial review. Plan approval expires M D YY if construction has not commenced by that date, or M D YY if construction was commenced prior to M D YY. (Paragraph No. #) SEWER PLAN(S) APPROVAL BY LAKEHAVEN. Execution and return of the DE Agr is required for all Lakehaven plan review tasks/services beyond an initial review. Plan approval expires 4 M D YY if construction has not commenced by approval date, or M D YY if construction was commenced prior to M D YY. (Paragraph No. #) 5 jAUTOCAD FILES. All related AutoCAD files submitted to Lakehaven. (Paragraph No. #) AS -BUILT CONSULTANT'S GUARANTEE LETTER. Letter from the engineer/surveyor who will be preparing the construction record drawings ("as-builts") for the project following construction, 6 confirming that accurate data will be collected in the field by the engineer/surveyor or employee(s) under his/her supervision. (Paragraph No. #) AS -BUILT CONSULTANT'S CERTIFICATE OF INSURANCE (ERRORS & OMISSIONS). Coverage for General Liability ($1M each claim/$1M aggregate). Lakehaven shall be identified as 7 the "Certificate Holder" and included as additional insured. It would be helpful if the Lakehaven project number listed above is indicated or referenced on the certificate. (Paragraph No. #) AS -BUILT CONSULTANT'S CERTIFICATE OF INSURANCE (GENERAL LIABILITY). Coverage for Errors and Omissions ($1M each claim/$1M aggregate). It would be helpful if the Lakehaven 8 project number listed above is indicated or referenced on the certificate. It would be helpful if the Lakehaven project number listed above is indicated or referenced on the certificate. (Paragraph No. #) CHARGE -PAYABLE -IN -LIEU -OF -EXTENSION PAYMENT(S)-WATER. Payment in the amount of $XX,YYY.ZZ for water facilities previously constructed by a publicly -funded project that provides direct benefit to Developer's property. (Paragraph #) 9 CHARGE -PAYABLE -IN -LIEU -OF -EXTENSION PAYMENT(S)-SEWER. Payment in the amount of $XX,YYY.ZZ for sewer facilities previously constructed by a publicly -funded project that provides direct benefit to Developer's property. (Paragraph #) DEVELOPER LATECOMER CHARGE PAYMENT(S)-WATER. Payment in the amount of $XX,YYY.ZZ for water facilities previously constructed by a developer -funded project that provides direct benefit to Developer's property. (Paragraph #) 10 DEVELOPER LATECOMER CHARGE PAYMENT(S)-SEWER. Payment in the amount of $XX,YYY.ZZ for sewer facilities previously constructed by a developer -funded project that provides direct benefit to Developer's property. (Paragraph #) Project Checklist-6318020.x1sx (09-01-17) Lakehaven WATER ,& SEINER OtSTRICT ITEM PROJECT ITEM DETAILS & DESCRIPTIONS ROW PERMIT -WATER. Lakehaven receipt of the AGENCY ROW Permit required for water it facilities to be constructed for the project. Lakehaven will apply for this permit after water plans have been approved. (Paragraph #) ROW PERMIT -SEWER. Lakehaven receipt of the AGENCY ROW Permit required for sewer 12 facilities to be constructed for the project. Lakehaven will apply for this permit after sewer plans have been approved. (Paragraph #) 13 OFFSITE EASEMENT(S)-WATER. Lakehaven receipt of the executed offsite easement(s) required for water facilities to be constructed for the project. (Paragraph #) 14 OFFSITE EASE MENT(S)-SEWER. Lakehaven receipt of the executed offsite easement(s) required for sewer facilities to be constructed for the project. (Paragraph #) RESTORATION GUARANTEE. Lakehaven receipt of the Restoration Guarantee required for water &/or sewer facilities to be constructed for the project, in the amount of $X,XXX.00, on 15 Lakehaven approved bond form. Amount is determined by Lakehaven after receipt of all required ROW Permits &/or offsite easements. Assignment of Funds or cash deposit is also acceptable. (Paragraph #) MATERIAL SUBMITTALS. Two (2) sets of material (shop/working) drawings, submitted as one 16 package, bound & indexed with a table of contents, for all equipment & material to be furnished for the project. (Paragraph #) DEVELOPER'S CERTIFICATE OF INSURANCE. Coverage for Commercial General Liability ($1M each occurrence/$2M general aggregate/$2M products) & Business Auto Liability ($11V! 17 each accident; all owned, non -owned & hired autos). Lakehaven shall be identified as the "Certificate Holder" and included as additional insured. It would be helpful if the Lakehaven project number listed above is indicated or referenced on the certificate. (Paragraph No. #) WATER/SEWER UTILITY CONTRACTOR INFORMATION. Lakehaven receipt of the 18 contractor's address, email address, phone number, emergency phone number, and the name of the contractor's foreman or superintendent; including proof of current/valid state contractor license. (Paragraph #) DE PRECONSTRUCTION MEETING. Separate Lakehaven preconstruction meeting, to review 19 the water &/or sewer construction plans for the project, with Lakehaven Inspections staff. Lakehaven DE meetings are typically held on either the 2nd or 4th Thursday of each month, at either 9:00 a.m. or 10:00 a.m. (Paragraph #) Project Checklist-6318020.x1sx (09-01-17) Lakehaven WARR & SeWER DiSI' I r ITEM # PROJECT ITEM DETAILS & DESCRIPTIONS WARRANTY (2-YEAR) GUARANTEE. Warranty Guarantee on Lakehaven approved bond form. The amount of the guarantee shall be ten percent (10%) of the cost of water/sewer construction 25 or $5,000.00, whichever is greater. This bond should be executed jointly for water and sewer (if applicable) —separate bonds are subject to the aforestated $5,000.00 minimum. You may execute an Assignment of Funds in lieu of the actual bond. Please contact Lakehaven for the proper form, should you choose to utilize this option. A cash deposit is also acceptable. BILL OF SALE - WATER. Bill of Sale for Water Facilities on Lakehaven approved form. Exhibit "A" of the form is a new facility inventory report, Exhibit "B" is a 'de -activated' facility inventory 26 report. Back-up invoices must be included in order for this form to be valid & the figures included in any Latecomers that may be applicable as a result of the project. If back up is not included, this form will not be valid & Latecomer reimbursement amounts will not be calculated or collected by Lakehaven. BILL OF SALE - SEWER. Bill of Sale for Sewer Facilities on Lakehaven approved form. Exhibit "A" of the form is a new facility inventory report, Exhibit "B" is a 'de -activated' facility inventory 27 report. Back-up invoices must be included in order for this form to be valid & the figures included in any Latecomers that may be applicable as a result of the project. If back up is not included, this form will not be valid & Latecomer reimbursement amounts will not be calculated or collected by Lakehaven. OTHER RELATED PROJECT COST INFORMATION. Other project cost information related to 28 the project but not directly associated with any Water &/or Sewer system facilities construction (e.g., easement acquisition costs, facilities/pipe removal costs, etc.), submitted by separate report/letter to Lakehaven. ONSITE EASEMENT. On -site easements for Water &/or Sewer facilities constructed for the project. The on -site easement descriptions will need to be verified against the "as -built" locations. Please have your engineer or surveyor prepare/compile legal descriptions and graphic depictions of the off -site property and easement areas, using a minimum one inch (1"), clear margin on all sides. Newly created descriptions must be stamped and signed by a professional land surveyor with registration in the State of Washington. Also, please provide 81/2" x 11" 29 drawings that graphically depict the easements for the facilities. The legal property descriptions should be labeled as Exhibit "A", the easement area descriptions as Exhibit "B", and the drawings should be labeled as Exhibit "C." We will forward the easement forms for execution when said descriptions/depictions have been approved. IF APPLICABLE, Lakehaven will accept easement dedication on the final plat/BSP/BLA documents, in lieu of separate on -site easement dedication(s). We will require a copy of the recorded final plat/BSP/BLA prior to initial project acceptance, if easements are so dedicated. Please submit the proposed/preliminary final plat/BSP/BLA documents to Lakehaven for review, when available. DE ACCEPTANCE GUARANTEE. Payment of the DE Acceptance Guarantee Deposit(s), as 30 applicable: $4,100.00 [2017] for Water, $3,200.00 [2017] for sewer. Only required if Substantial Completion requested by Developer. SUBSTANTIAL COMPLETION GUARANTEE. Payment of the Substantial Completion Guarantee 31 Deposit (Assignment of Funds or cash deposit) of $TBD-by-Lakehaven. Only required if Substantial Completion requested by Developer. Project Checklist-6318020.xlsx (09-01-17) Lakehaven MIN mp-- I ITEM PROJECT ITEM DETAILS & DESCRIPTIONS PRIOR TO SUBSTANTIAL COMPLETION (IF REQUESTED BY DEVELOPER) 20 SUBSTANTIAL COMPLETION REQUEST BY DEVELOPER. Developer written request (email or letter) for Lakehaven Substantial Completion status. OPERATION INSPECTION - WATER. Satisfactory operational inspection of the water facilities 21 constructed for the project, including satisfactory results of pressure and purity (bacteriological) tests. Please contact Lakehaven's assigned project inspector directly (NAME, PHONE#), for coordination of this task. OPERATION INSPECTION - SEWER. Satisfactory operational inspection of the sewer facilities 22 constructed for the project, including satisfactory results of pipe pressure tests, manhole vacuum tests and video camera inspection. Please contact Lakehaven's assigned project inspector directly (NAME, PHONE#), for coordination of this task. CONSTRUCTION RECORD DRAWINGS & AUTOCAD FILES - WATER. The original Mylar Water construction record drawings, which have been conformed to construction records. These record drawings must be certified "as -built" by a surveyor or engineer licensed in the State of Washington. The project engineer should first submit prints of said plans for Lakehaven review, along with Exhibit "A" of the Bill of Sale document(s). The originals may be submitted as soon as the prints are acceptable. Water-soluble ink and/or reverse -read drawings are not 23 acceptable. All related AutoCAD files shall also be provided for our records. The AutoCAD dwg format files need to include any cross-referenced or x-referenced files; any font files (e.g., shp, shx, ttf, or txt); any plot style or configuration files (e.g., ctb, pc3, or stb); and other files referenced in any of the drawing files (e.g., lin or pat) associated with the project. It is preferred that x-referenced files be bound to the referencing drawing file, and the drawing file(s) be clearly identifiable by name (e.g., project name &/or number (W_AsBuilt_01of07.dwg)) or similar naming convention, whether each plot sheet is assigned its own drawing file or all the finished plots are layouts in a single drawing file. CONSTRUCTION RECORD DRAWINGS & AUTOCAD FILES - SEWER. The original Mylar Sewer construction record drawings, which have been conformed to construction records. These record drawings must be certified "as -built" by a surveyor or engineer licensed in the State of Washington. The project engineer should first submit prints of said plans for Lakehaven review, along with Exhibit "A" of the Bill of Sale document(s). The originals may be submitted as soon as the prints are acceptable. Lakehaven will accept the initial submittal of sewer record drawings that are absent of final manhole rim elevations on paper media, but final manhole rim elevations 24 shall be provided on new Mylar record drawings prior to initial project acceptance. Water-soluble ink and/or reverse -read drawings are not acceptable. All related AutoCAD files shall also be provided for our records. The AutoCAD dwg format files need to include any cross-referenced or x-referenced files; any font files (e.g., shp, shx, ttf, or txt); any plot style or configuration files (e.g., ctb, pc3, or stb); and other files referenced in any of the drawing files (e.g., lin or pat) associated with the project. It is preferred that x-referenced files be bound to the referencing drawing file, and the drawing file(s) be clearly identifiable by name (e.g., project name &/or number (S_AsBuilt_01of07.dwg)) or similar naming convention, whether each plot sheet is assigned its own drawing file or all the finished plots are layouts in a single drawing file. Project Checklist-6318020.x1sx (09-01-17) VfArF,R & SEWER ❑ISTit ICr ITEM PROJECT ITEM DETAILS & DESCRIPTIONS WARRANTY (2-YEAR) GUARANTEE. Warranty Guarantee on Lakehaven approved bond form. The amount of the guarantee shall be ten percent (10%) of the cost of water/sewer construction or $5,000.00, whichever is greater. This bond should be executed jointly for water and sewer (if 25 applicable) —separate bonds are subject to the aforestated $5,000.00 minimum. You may execute an Assignment of Funds in lieu of the actual bond. Please contact Lakehaven for the proper form, should you choose to utilize this option. A cash deposit is also acceptable. BILL OF SALE - WATER. Bill of Sale for Water Facilities on Lakehaven approved form. Exhibit "A" of the form is a new facility inventory report, Exhibit "B" is a'de-activated' facility inventory 26 report. Back-up invoices must be included in order for this form to be valid & the figures included in any Latecomers that may be applicable as a result of the project. If back up is not included, this form will not be valid & Latecomer reimbursement amounts will not be calculated or collected by Lakehaven. BILL OF SALE - SEWER. Bill of Sale for Sewer Facilities on Lakehaven approved form. Exhibit "A" of the form is a new facility inventory report, Exhibit "B" is a 'de -activated' facility inventory 27 report. Back-up invoices must be included in order for this form to be valid & the figures included in any Latecomers that may be applicable as a result of the project. If back up is not included, this form will not be valid & Latecomer reimbursement amounts will not be calculated or collected by Lakehaven. OTHER RELATED PROJECT COST INFORMATION. Other project cost information related to 28 the project but not directly associated with any Water &/or Sewer system facilities construction (e.g., easement acquisition costs, facilities/pipe removal costs, etc.), submitted by separate report/letter to Lakehaven. ONSITE EASEMENT. On -site easements for Water &/or Sewer facilities constructed for the project. The on -site easement descriptions will need to be verified against the "as -built" locations. Please have your engineer or surveyor prepare/compile legal descriptions and graphic depictions of the off -site property and easement areas, using a minimum one inch (1"), clear margin on all sides. Newly created descriptions must be stamped and signed by a professional land surveyor with registration in the State of Washington. Also, please provide 81/2" x 11" 29 drawings that graphically depict the easements for the facilities. The legal property descriptions should be labeled as Exhibit "A", the easement area descriptions as Exhibit "B", and the drawings should be labeled as Exhibit "C." We will forward the easement forms for execution when said descriptions/depictions have been approved. IF APPLICABLE, Lakehaven will accept easement dedication on the final plat/BSP/BLA documents, in lieu of separate on -site easement dedication(s). We will require a copy of the recorded final plat/BSP/BLA prior to initial project acceptance, if easements are so dedicated. Please submit the proposed/preliminary final plat/BSP/BLA documents to Lakehaven for review, when available. DE ACCEPTANCE GUARANTEE. Payment of the DE Acceptance Guarantee Deposit(s), as 30 applicable: $4,100.00 [2017] for Water, $3,200.00 [2017] for sewer. Only required if Substantial Completion requested by Developer. SUBSTANTIAL COMPLETION GUARANTEE. Payment of the Substantial Completion Guarantee 31 Deposit (Assignment of Funds or cash deposit) of $TBD-by-Lakehaven. Only required if Substantial Completion requested by Developer. Project Checklist-6318020.x1sx (09-01-17) WATER F SEVIER GISrRIC1 i ITEM PR03ECT ITEM DETAILS & DESCRIPTIONS ROW PERMIT -WATER. Lakehaven receipt of the AGENCY ROW Permit required for water it facilities to be constructed for the project. Lakehaven will apply for this permit after water plans have been approved. (Paragraph #) ROW PERMIT -SEWER. Lakehaven receipt of the AGENCY ROW Permit required for sewer 12 facilities to be constructed for the project. Lakehaven will apply for this permit after sewer plans have been approved. (Paragraph #) 13 OFFSITE EASEMENT(S)-WATER. Lakehaven receipt of the executed offsite easement(s) required for water facilities to be constructed for the project. (Paragraph #) 14 OFFSITE EASE MENT(S)-SEWER. Lakehaven receipt of the executed offsite easement(s) required for sewer facilities to be constructed for the project. (Paragraph #) RESTORATION GUARANTEE. Lakehaven receipt of the Restoration Guarantee required for water &/or sewer facilities to be constructed for the project, in the amount of $X,XXX.00, on 15 Lakehaven approved bond form. Amount is determined by Lakehaven after receipt of all required ROW Permits &/or offsite easements. Assignment of Funds or cash deposit is also acceptable. (Paragraph #) MATERIAL SUBMITTALS. Two (2) sets of material (shop/working) drawings, submitted as one 16 package, bound & indexed with a table of contents, for all equipment & material to be furnished for the project. (Paragraph #) DEVELOPER'S CERTIFICATE OF INSURANCE. Coverage for Commercial General Liability ($1M each occurrence/$2M general aggregate/$2M products) & Business Auto Liability ($1M 17 each accident; all owned, non -owned & hired autos). Lakehaven shall be identified as the "Certificate Holder" and included as additional insured. It would be helpful if the Lakehaven project number listed above is indicated or referenced on the certificate. (Paragraph No. #) WATER/SEWER UTILITY CONTRACTOR INFORMATION. Lakehaven receipt of the 18 contractor's address, email address, phone number, emergency phone number, and the name of the contractor's foreman or superintendent; including proof of current/valid state contractor license. (Paragraph #) DE PRECONSTRUCTION MEETING. Separate Lakehaven preconstruction meeting, to review 19 the water &/or sewer construction plans for the project, with Lakehaven Inspections staff. Lakehaven DE meetings are typically held on either the 2nd or 4th Thursday of each month, at either 9:00 a.m. or 10:00 a.m. (Paragraph #) Project Checklist-6318020.x1sx (09-01-17) Lakenauen ITEM PR03ECT ITEM DETAILS & DESCRIPTIONS SUBSTANTIAL COMPLETION AGREEMENT EXECUTED BY DEVELOPER. Execution (by 32 1 Developer) & return of the Substantial Completion Agreement that was forwarded by Lakehaven on DATE. PRIOR TO PR03ECT ACCEPTANCE BY LAKEHAVEN LATECOMER AGREEMENT PROCESS - LATECOMER WAIVED PROPERTIES. If applicable, identification of any properties deemed by Lakehaven to be eligible for latecomer reimbursement, but for which Developer chooses to waive its right to latecomer reimbursement. LATECOMER AGREEMENT PROCESS - LEGAL DESCRIPTIONS FOR WATER ELIGIBLE PROPERTIES. If applicable, legal descriptions of all properties that are benefited by the construction of water facilities for the project. Descriptions shall be prepared on 81/2" x 11" paper, with one inch (1"), clear margins on all sides, and shall be labeled as Exhibit "A." If required, they shall then be stamped and signed by a professional land surveyor with registration in the State of Washington. 33 LATECOMER AGREEMENT PROCESS - LEGAL DESCRIPTIONS FOR SEWER ELIGIBLE PROPERTIES. If applicable, legal descriptions of all properties that are benefited by the construction of sewer facilities for the project. Descriptions shall be prepared on 81/2" x 11" paper, with one inch (1"), clear margins on all sides, and shall be labeled as Exhibit "A." If required, they shall then be stamped and signed by a professional land surveyor with registration in the State of Washington. LATECOMER AGREEMENT PROCESS - LATECOMER AGREEMENT. Execution and return of the Latecomer Agreement by the Developer. Reimbursements are typically issued for each payment received and are subject to a payment -processing fee in accordance with the fee established in Lakehaven's current'Fees and Charges' Resolution at the time of each reimbursement. ACCEPTANCE INSPECTION - WATER. Satisfactory "Acceptance" inspection of the water facilities constructed for the project. Please contact Lakehaven's assigned project inspector 34 directly (NAME, PHONE#), for coordination of completion of construction. If provided notice of any items requiring correction (i.e., "punchlist"), please contact Lakehaven's assigned project technician (NAME, EMAIL), to coordinate re -inspection. ACCEPTANCE INSPECTION - SEWER. Satisfactory `Acceptance" inspection of the sewer facilities constructed for the project. Please contact Lakehaven's assigned project inspector 35 directly (NAME, PHONE#), for coordination of completion of construction. If provided notice of any items requiring correction (i.e., "punchlist"), please contact Lakehaven's assigned project technician (NAME, EMAIL), to coordinate re -inspection. ROW PERMIT RELEASE - WATER. Written notice received by Lakehaven from (ROW AGENCY), 36 indicating satisfactory restoration of the ROW under their permit for water construction (No. TBD). ROW PERMIT RELEASE - SEWER. Written notice received by Lakehaven from (ROW AGENCY), 37 indicating satisfactory restoration of the ROW under their permit for sewer construction (No. TBD). OFF -SITE EASEMENT RESTORATION RELEASE(S). Written notice from the adjacent property 38 owner(s), indicating satisfactory restoration of their property (off -site easements) following construction. Project Checklist-6318020.x1sx (09-01-17) n L' ATAR & 5:WV R 131STR1CT ITEM PROJECT ITEM DETAILS & DESCRIPTIONS RECORDED FINAL PLAT/BSP/BLA. Copy of the recorded final plat/BSP/BLA. 39 Proposed/preliminary final plat/BSP/BLA documents should be submitted to Lakehaven for review as part of the Substantial Completion process summarized above, to be certain easement requirements are satisfactorily addressed. 40 DE WARRANTY INSPECTION FEE(S). Payment of the applicable DE Warranty Inspection Fees: Water = $330.00 [2017], Sewer = $610.00 [2017]. PRIOR TO PROJECT ACCOUNT INITIAL CLOSEOUT 41 FINAL DE PROJECT INVOICE OR REFUND. Payment by Developer of the final DE project invoice or final project Refund by Lakehaven, whichever is applicable. PRIOR TO FINAL PROJECT CLOSEOUT AFTER 2-YEAR WARRANTY PERIOD WARRANTY INSPECTION - WATER. Satisfactory "Warranty" inspection of the water facilities 42 constructed for the project, including correction of all defects noted during the "Warranty" inspection. If provided notice of any items requiring correction, please contact Lakehaven's assigned project technician, NAME (EMAIL@ Lakehaven.org), to coordinate re -inspection. WARRANTY INSPECTION - SEWER. Satisfactory "Warranty" inspection of the sewer facilities 43 constructed for the project, including correction of all defects noted during the "Warranty" inspection. If provided notice of any items requiring correction, please contact Lakehaven's assigned project technician, NAME (EMAIL@ Lakehaven.org), to coordinate re -inspection. Project Checklist-6318020.xlsx (09-01-17) etakehaven �" -'- WATER P, SEWER DISTRICT Project Name: LAKE GROVE ELEMENTARY I Project No.: 6318020 Project Tech.. B11A Updated: 10/22/2018 Notes. A. Any/all requests for modifications to Lakehaven's standards, specifications, policies &/or - resolutions shall be made in writing (Plan Review Checklist comment, email, or letter) to Lakehaven. B. Fees, charges &/or deposits indicated are based on current Lakehaven schedule, are typically reviewed annually, & are subject to change without notice. PRIOR TO ACCEPTANCE BY LAKEHAVEN 33 NZA 6atecomer Agreement PFeeess. 34 Acceptance Inspection(s) - Water. 35 N/A ...... ffispeetieF9ES) Sewer, 36 ROW Permit Release - Water. 37 N/A ROW Per-Fflit Release Sewef�.- 38 N/A Off site Easement ReStEWatilEIR Fkeleasefs�-. 39 N/A ReC=BFded Final RaVBGR��. 40 DE Warranty Inspection Fee(s). PRIOR TO PROJECT ACCOUNT INITIAL CLOSEOUT 41 IFinal DE Project Invoice or Refund. PRIOR TO FINAL PROJECT CLOSEOUT AFTER 2-YEAR WARRANTY PERIOD 42 1 Warranty Inspection - Water. 43 N/A lWaPFanty inspe.ti.- Project Checklist-6318020,xlsx (Form Update 09-01-17) Page 2of8 ! IB' W:� b i•1,LW IY EOIC f t•.,s.1 Tl j Ir��a,.al• j tl' � 1 CY � . Y [ 4S.T• PARALLEL ADA RAMP CONCRETE WALKWAY(-IYP) PARENT DROP/PICK—UP CONCRETE FLUSH CURB (TYP @ PARKING) CONCRETE VERTICAL CURB (TYP) 1. _ '.._..._ .. ASPHALT PAVEMENT CONCRETE WHEEL , STOP (TYP) CONNECT TO BLDG GREASE WASTE PROTECT AND PRESERVE EXISTING SEWER PUMP STATION. EVALUATE/RELOCATE NEW CONTROLS AND POWER. INSTALL REPLACEMENT WET TANK (IF NECESSARY) FIRE LANE FARY SEWER FORCE MAIN �!r CONNECT TO EXISTING g WAI-ERMAIN CONCRETE FLUSH, CURB PARALLEL (TYP @ ADA RAMP G [ F3r1 `f CL4C Y� -y e d r, ENE; wn c I :vu :hTsCPp , oP rR•T[ N Scale T-40' CITY ROAD SECTION 'S' 10' LANE, 8' PARKING, C/G, o"' PLANTER, 5' SW PARALLEL ADA RAMP _ m� o �� cR) PROPOSED PARKING LANE STRIPiNG r Ai- 0 '770!!2� 1 (M6E Ima Ili ASPHALT PAVEMENT (T YP) VERTICAL BENDS �v-ticv ®{Z>T IN HEAVY DUT1Y ASPHALT PAVEMENT (TYP) 4" DOMESTIC WATER METER, PLAY FIELD FIRE HYDRANT (TYP) RAMP 10 PLAY FIELD /f COVERED P. 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M14F Clw bd br .[A Redsio- I DEb I PAVING AND UTILITIES C-300 LAKE GROVE ELEMENTARY SCHOOL — PO 18802267 Lakehaven Project No. 6318020 AGREEMENT THIS AGREEMENT, entered into in duplicate between the LAKEHAVEN WATER AND SEWER DISTRICT, King County, a municipal corporation of the State of Washington, hereinafter referred to as "the District" and FEDERAL WAY PUBLIC SCHOOLS, hereinafter referred to as "the Developer". WITNESSETH: WHEREAS, the District operates and maintains a water distribution system within its boundaries which can serve property of the Developer, and WHEREAS, the Developer desires to construct certain water mains and appurtenances at its own cost to serve the Developer's property, for delivery to and operation by the District, NOW, THEREFORE, IT IS HEREBY AGREED that: 1. The land for which domestic water service is requested and to which this Agreement applies, is realty in King County, Washington, legally described in Exhibit "A" and generally depicted in Exhibit "B", attached hereto and by this reference incorporated herein. By executing this Agreement, the Developer represents and warrants that it is the owner of record of the above -described property. If such representation of ownership is invalid, this Agreement shall be void as to the portion of the property not owned by the Developer. The Developer agrees that the District may require the Developer to furnish a title report for the property at the Developer's expense. 2. All newly created legal descriptions shall be furnished by the Developer and shall be stamped and signed by a professional land surveyor licensed in the State of Washington. Each newly created legal description shall be accompanied by a drawing that graphically depicts the legal description. 3. The Developer has paid the required deposit as set forth in District Resolution No. 2017-1300, or any subsequent amendment thereto. Said deposit shall be applied against actual expenses of the District, including all bacteriological testing and sampling. The District shall determine, on a regular basis, its actual costs associated with the project, including taxes, and shall submit to the Developer an invoice to repay the District for actual costs in excess of the amount previously collected. Payment shall be due as noted on said invoice. Off -hours labor, including overhead, costs for such inspections will be charged to the project on an DE Agr-6318020.docx (Form Update 12/19/17) Page 1 of 8 overtime basis. The Developer agrees that the project account shall remain current for the life of the project and delinquency of any kind shall induce work stop action/orders, suspension/termination of service or any other action necessary to effect collection of monies owed the District. In the event monies are owed the District for work on, or unpaid charges allocated to, the project, as determined by the District, Developer agrees that the District shall be entitled to recover such monies by withholding and making application for payment to itself, any assignment of funds, cash deposits or latecomer reimbursements otherwise owing to the Developer. In the event that the deposit exceeds the District's actual expenses, the District shall issue to the Developer, at project closing, a refund of such unused amounts. 4. Except as noted herein, all work conducted by the District will be performed during normal work hours. The Developer may, at their discretion, submit a written request to the District for District non-exempt staff to expend overtime for tasks and services related to the completion of this Agreement. Said written request(s) shall state the Developer's reasons for the request(s) that would qualify it as an "emergency" (e.g., "excessive" additional expenses for any delays in plan review (actual/estimated figures should be provided), approaching unfavorable weather conditions for construction, permit expirations, etc.). Each written request submitted to the District for this purpose should also specify any component limitations the Developer desires (e.g., request for plan review/approval, request for construction inspections, etc.). S. In the event work and construction described herein is not completed within five (5) years from the date of application for this Agreement, said application date being OCTOBER 5, 2018, the District can terminate the Agreement without notice, the Agreement shall then be void, and a new Developer Extension Agreement Application, along with applicable fee, will be required to re -commence and subsequently complete said work. 6. It is agreed by the parties that time is of the essence in all matters relating to the performance of this Agreement. 7. The Developer agrees that all requests for modification to District standards, specifications, policies or Resolution shall be submitted in writing to the District. Such requests shall be reviewed and the District will provide a written response to each submitted written request. S. The District shall review final plans and specifications for water distribution system construction to be performed by the Developer under this Agreement. If preliminary plans are not deemed acceptable by the District, the Developer shall be obligated to revise the plans and specifications in accordance with design standards deemed acceptable by the District. In the event that more than three (3) items are found to remain deficient by the District on the third submittal of plans, subsequent review by District staff may be billed at a factor of 1.5 times the standard rate without further notice to the Developer. The Developer shall submit final plans for construction in AutoCAD format (on disk or via email attachment), and on standard print media (24"x36" or 22"x34" size), prior to scheduling the preconstruction meeting. After the Developer has been notified in writing by the District that final plans and specifications have been approved, and all other necessary items have been addressed and resolved, the Developer and the Developer's contractor shall meet with the District's representatives for a preconstruction meeting before construction is commenced. DE Agr-6318020.docx (Form Update 12/19/17) Page 2 of 8 9. The Developer agrees that it shall be responsible for providing to the District accurate and reliable information concerning the actual location of the facilities constructed. In furtherance of this obligation, the Developer shall procure from LPE ENGINEERING PLLC, or other licensed engineer or surveyor that the Developer has indicated will be consulting on the construction phase of the project, a written statement, which shall be submitted to the District prior to scheduling the preconstruction meeting, stating that accurate data will be collected during construction of the facilities to enable the engineer/surveyor to submit actual and reliable "as -built" locations to the District, based upon the information available to the engineer/surveyor during construction and also by field survey of the constructed facilities that are accessible at the ground surface. The Developer shall cause such engineer/surveyor to submit to the District, prior to scheduling the preconstruction meeting, a certificate of insurance for the engineer's/surveyor's Errors and Omissions policy. The Developer shall also cause such engineer/surveyor to submit to the District, prior to scheduling the preconstruction meeting, a certificate of insurance and a copy of an endorsement to the engineer's/surveyor's General Liability policy, naming the District as an additional insured as respects the obligations set forth in this section. The limits for Errors and Omissions and General Liability Insurance shall not be less than $1,000,000.00 for each claim; $1,000,000.00 aggregate. At the conclusion of construction and prior to and as a condition of acceptance, the engineer/surveyor shall deliver to the District its certification that it has made periodic field investigations and measurements during construction and that the "as -built" drawings submitted to the District, which drawings shall be provided in AutoCAD format (on disk or via email attachment) and on original or fixed -line photo mylar, are accurate and reliable. The District shall have the right to approve any change in the consulting engineer or surveyor during the project and the Developer agrees that the District may refuse any change in the consulting engineer or surveyor or may condition the same on resubmittal of the certification of location described above. No approval of any new engineer or surveyor shall be unreasonably withheld by the District. 10. The District will make application for the CITY OF FEDERAL WAY 'Right-of-way Construction Permit(s)'. The Developer acknowledges familiarity with the provisions of such Right-of-way Construction Permit(s) and agrees that it or its contractor's failure to comply with any of the provisions of the permit(s) shall entitle the District, in addition to the right to enforce any other remedy available to the CITY OF FEDERAL WAY as the permitting party, to immediately stop all construction activity on the right-of-way until the violation or violations have been eliminated and corrected to the satisfaction of the District and the District should not be held liable for any damages, either direct or indirect, for the delay and expense of such work stoppage. The Developer shall procure all other state, county and city licenses or permits. 11. The Developer agrees this Agreement shall create twenty -foot (20') wide [pipe(s) offset five -feet (5') from nearest margin] non-exclusive easement areas and right-of- way granted to the District for water distribution facilities and all appurtenances related thereto, as indicated on water facility construction plans approved by the District for the project, respectively, through, over and across the Developer's property. This easement shall be maintained in full force and effect unless superseded and replaced by another easement as determined acceptable by the District. 12. In the event an easement is required over realty other than realty described in Paragraphs No. 1 & No. 11 herein, such easement, in form acceptable to the District, together with title report or other sufficient proof of ownership of such realty, shall be delivered to the DE Agr-6318020.docx (Form Update 12/19/17) Page 3 of 8 District prior to scheduling the preconstruction meeting. The Developer shall be obligated to obtain a written release from any property owner across whose property construction is performed pursuant to the grant of an easement, sufficient to indicate that the site restoration on the easement is satisfactory and complete. 13. Prior to scheduling the preconstruction meeting, the Developer shall deliver to the District a restoration performance bond in a sum to be determined by the District after receipt of any required Right -of -Way Construction Permit(s) and/or after the determination of off -site restoration requirements related to the work described herein, conditioned that the Developer will restore to the satisfaction of the District, and state, county, and city agencies as applicable, all work to be performed hereunder in public rights -of -way and the District's easements. Form and contents of bond shall be determined by the District. This requirement is waived for public authorities; however, Developer shall be held accountable for any such restoration. Should any restoration work be determined necessary, Developer will be notified to complete the restoration work. If such work is not corrected within the specified time, the District will perform the work and issue an invoice to the Developer. Said invoice shall be paid within thirty (30) days of issue date. 14. Construction shall be performed in accordance with the District's approved plans, standards and specifications and only under the supervision of a licensed contractor experienced in the installation of water distribution system facilities and the related work. 15. Two (2) sets of materials submittals shall be submitted to the District as one package, bound and indexed with a table of contents, for all equipment/material to be furnished for this project. Each submitted piece of equipment/material shall be fully defined by catalog number and reference made as to its applicable section of the District's standard specifications. Materials submittals shall be submitted prior to scheduling the preconstruction meeting. 16. By execution of this Agreement, the District does not guarantee water service will be provided to realty described herein. In the event that any of the District's facilities, such as storage tanks, wells, and water transmission mains become utilized beyond their design or approved capacity or become inoperable for any cause, the District reserves the right to refuse any connections which would use such facility until remedial action has been completed, and the District shall not be liable for any direct or consequential damages which occur to the Developer arising out of such the District's refusal to connect or time delay necessary to take remedial action. 17. The Developer and its agents agree to indemnify and hold the District harmless from any and all claims which may be assessed against the District as a result of the construction or maintenance of the work described in this Agreement prior to acceptance by the District. The Developer shall maintain in full force and effect during the construction period, the following insurance: Commercial General Liability Insurance with bodily injury and property damage limits of not less than: $1,000,000.00 Each Occurrence $2,000,000.00 General Aggregate $2,000,000.00 Products -Completed Operations Aggregate Limit DE Agr-6318020.docx (Form Update 12/19/17) Page 4 of 8 Business Auto Liability coverage for all owned, non -owned, and hired autos with bodily injury and property damage limits of not less than: $1,000,000.00 Each Accident A certificate of insurance and a copy of an endorsement to the Developer's Commercial General Liability Insurance policy, showing the District as additional insured as respects the work to be performed under this Agreement, shall be provided prior to scheduling the preconstruction meeting. Thirty (30) days written notice shall be given to the District for cancellation or expiration of this insurance. 18. The Developer shall notify the District the date work and construction described in this Agreement will commence, and said notice shall be given not less than 72 hours (not including Saturday, Sunday, or national holidays) prior to such date. No water distribution system facility shall be covered prior to inspection by the District. After work is commenced, it shall vigorously, consistently, and in a first-class workmanlike manner be carried to completion. The Developer shall maintain at the construction area at all times during construction, a representative to whom District notices may be given regarding construction. Said representative shall be designated in writing by the Developer before start of work. The Developer may request inspections during construction upon two (2) days notice to the District. 19. Testing of water system facilities shall be performed as required by the District and only after satisfactory tests have been completed and witnessed by the District's designated agent, will the work be accepted. The Developer agrees that at such time as the District has performed inspection of the water distribution system facilities & system connections and has delivered itemized punch lists to the Developer and/or the Developer's contractor, that the project will be pursued to final completion, including the performance of all necessary site restoration. 20. Upon completion of construction, the Developer or the Developer's contractor shall deliver to the District a guarantee in the amount of ten percent (10%) of construction costs or $5,000.00, whichever is greater, that a reliable contractor will make and pay for repairs necessary within two (2) years from the date of acceptance of said construction, arising from faulty labor or material. Form of guarantee is to be approved by general counsel for the District. This requirement is waived for public authorities; however, Developer shall be held accountable for any such repairs. Should any defects be discovered within the specified 2-year time period, Developer will be notified and given ample time to correct same. If defects are not corrected within the specified time, Lakehaven will perform the work and issue an invoice to the Developer. Said invoice shall be paid within thirty (30) days of issue date. This paragraph shall be valid beyond the release of this Agreement and until the District closes out the associated project account. 21. Upon completion of construction, the Developer shall submit, for acceptance and approval of the District, Bills of Sale for water distribution system facilities, mains and appurtenances installed and constructed pursuant to this Agreement, in a form acceptable to the District, together with such other engineering records and project cost data as may be required by the District. DE Agr-6318020.docx (Form Update 12/19/17) Page 5 of 8 22. As a condition of District acceptance of the project, the Developer shall submit to the District a non-refundable warranty inspection fee for water, as set forth in District Resolution No. 2017-1300, or any subsequent amendment thereto, to be held by the District and applied against actual expenses of the District incurred to complete warranty inspections following the two-year warranty period. 23. In the event new or modified District easements are required over Developer's property described herein, such easements, in form acceptable to the District, shall be delivered to the District as a condition of & prior to the activation of any new or modified service connections for the property. 24. In the event the Developer requests and the District provides water meters for the realty described herein, prior to the District's acceptance of work, the Developer agrees to be solely responsible for any loss or damage to such water meters or their installation, which occurs prior to said acceptance of work by the District. 25. Work and construction performed under this Agreement shall not be connected to the District's water distribution systems until all provisions and requirements of this Agreement and District Resolutions, on the part of the Developer, have been fully complied with. 26. The District and the Developer agree that in carrying out the terms of this contract, the Developer shall be acting as an independent contractor and in no respect shall Developer be deemed an agent or partner of the District. 27. The Developer shall not assign this contract without the written consent of the District. 28. The District shall provide water service following the District's acceptance of the water distribution facilities for operation and maintenance and upon payment of the connection charges as set forth and in accordance with District Resolution No. 2017-1300. Said connection charges shall consist of the Capital Facilities Charge (CFC), Service &/or Meter Installation Charge &/or Deposit, and any other such charges levied in accordance with said District Resolution No. 2017-1300 or amendments thereto or any other applicable District Resolution at time service is requested. 29. The parties agree that, if determined applicable by the District, the provision of latecomer reimbursements for system facilities constructed pursuant to this Agreement will be handled by separate agreement to be executed between the parties within a reasonable time following acceptance of the facilities and establishment of the appropriate latecomer reimbursement area by the District's Board of Commissioners. Any applicable latecomer reimbursement period will be limited to 15 years, or longer, pursuant to the provisions of state law. 30. Partial waiver or waiver by acquiescence by the District of any provision or condition of this Agreement shall not be a waiver of any other provision or condition of this Agreement. 31. This Agreement shall constitute an easement and servitude upon the property described herein and shall be binding upon the heirs, assigns and successors in interest to the DE Agr-6318020.docx (Form Update 12/19/17) Page 6 of 8 Developer. This Agreement shall constitute an equitable lien against property described herein and in the event of nonperformance by the Developer, as stated herein, the District may foreclose said lien in the manner authorized by law. 32. This writing constitutes the full and only agreement between the parties, there being no promises, agreements or understandings, written or oral, except as herein set forth, or as hereinafter may be amended in writing. 33. Upon execution of this Agreement, the parties agree in the event either of them is required to enforce any provision or provisions of this Agreement against the other, that the prevailing party shall be entitled, in addition to all other amounts to which it is otherwise entitled by this Agreement, to its actual attorney's fees and costs, including those incurred on appeal. DE Agr-6318020.docx (Form Update 12/19/17) Page 7 of 8 WITNESS our hands and seals. FEDERAL WAY PUBLIC SCHOOLS ByJill A-1 Its A , im4, 44 L Date: .1 L -.-LILrz-G'Lrj el. 2 e_:' i �I State of County of ki dz� LAKEHAVEN WATER & SEWER DISTRICT King- County, Washington velop6tent Engineering Manager Dated: This record was acknowledged before me on _lei -/,t L'La Lq 26> f Ikr� (I3a e} by All, as (Na ) (Type of Authority, Title) of -cI (Company Name (Wary Lucille Helbling Notary Public State of Washington [My ApPdntrrrent F�cpiiee 03110l2021 �'d4a�'A�4r V EPVVI�and For recording in the State of Washington, the Notarial Seal must be fully legible and cannot intrude into document margins. Please affix seal in the space provided. DATED: (Signature) Nota Public Title My appointment expires DE Agr-6318020.docx (Form Update 12/19/17) Page 8 of 8 EXHIBIT "A" LEGAL PROPERTY DESCRIPTION BEGINNING AT A POINT 55 FEET EAST OF THE NORTHWEST CORNER OF THE SOUTHEAST 1/4 OF THE NORTHEAST 1/4 OF SECTION 7, TOWNSHIP 21, RANGE 4 EAST, W.M., IN KING COUNTY, WASHINGTON; THENCE SOUTH 01021'07" WEST 420 FEET; THENCE SOUTH 88048'32" EAST 152.90 FEET; THENCE SOUTH O1021'02" WEST 135 FEET; THENCE SOUTH 88048'32" EAST 669.49 FEET; THENCE NORTH 01021'07" EAST 555 FEET TO THE NORTH LINE OF SAID SUBDVISION; THENCE NORTH 88048'32" WEST 822.39 FEET TO THE POINT OF BEGINNING; LESS THE NORTH 30 FEET FOR ROAD. TAX PARCEL NO. 07421049180 PROPERTY DEPICTION i Ifooauu(ZU 5560000370) t7$$9fla73a l510 0D3 5680 30574 1 � 30645 SZ �1788900740 5560000390 30706 30653: IT Q v 1788900750 5560000400 30714 + 30059 f EXHIBIT "B" -- ' S56a004584 I buuuu Nu ttbUuuuIMU eo rf IrcE' _30642 3a643 + i60 000 -. 306,., 30642 5560000570 0000800 5560000850 3D6490650 30651 00 0 00530 --- 30650 5560000560 000810 5564000$40 30657 q 346`_•8 30657 i0000540 «,6000a550 5560000820 55SO400830 30658 30E63 30c"64 3Dc63 -'? I,— W 3087-H Sr U F A M1 FEDERAL WAY Department of PUBLIC SCHOOLS Maintenance & Operations �-� E TO: City of Federal Way Community Development APR 3 0 2019 FROM: Mike Benzien, Executive Director of Maintenance avfterrrya bapkWAY PROJECT: Lake Grove Elementary School SUBJECT: FWPS Access to the Solid Waste & Recycling (SWR) Enclosure DATE: April 24, 2019 This memorandum is regarding the Federal Way Public Schools (FWPS) capital bond projects Federal Way Revised Code (FWRC) 19.145.490 (FWRC 19.185.070). Specifically for Lake Grove Elementary School access to the Solid Waste & Recycling (SWR) Enclosure. FWPS has their custodian(s) unlock the gate(s) on the mornings of scheduled pickup for solid waste & recycling. Mike Benzien Federal Way Public Schools Each Scholar: A voice. A dream. A BRIGHT future. 1211 S. 332"d St, Federal Way, WA 98003 1 p.253.945.5930 I f.253.945.59591 www.fwps.org 11 engineering P C April 1, 2019 EJ Walsh, P.E. Director of Public Works 33325 8th Avenue South Federal Way, WA 98003 April I, 2019 Commercial Land Use Review Checklist Deviation Request Federal Way Public Schools RESUBMITTED Page I APR 3 0 2019 CITY OF FEDERAL VOAY COMMIUNIiY DEVELOPME'�` Re: Commercial Land Use Review Checklist Deviation Request Federal Way Public Schools Dear Mr. Walsh: This letter is an official written request for a deviation from the Commercial Land Use Review Checklist Under the "Required Storm Water Control and Treatment" section, the Commercial Land Use Checklist states: "Ifproperty is outside City center, facilities are above -ground" In addition, all three City of Federal Way Pre -application Conference Summaries comment under the Public Works Development Services Division: "Detention and water qualityfacilities must be above ground (i. e. open pond). Underground facilities are allowed only with approval from the City of Federal Way Public Works Department" This specific comment in the pre -application conference summary cannot be found in the City of Federal Way Municipal Code. To clarify this pre -application requirement, LPD reached out to Cole Elliot to verify if the project needed a variance through Public Works. He stated: I have looked high and low for a section in the Federal Way Revised Coed (FWRC), Development Standards, Comprehensive Plan and the City Core Section which would require all storm retention/detention systems outside of City Core to be above ground. I found It listed on our Pre - Application Conference summary and on the Development Services review checklist but I did not find that requirement in code. I was able to locate one maintenance policy regarding open ponds but that applies to systems the City will own and maintain. Therefore so long as it is clear in your design proposal that the proposed storm vaults will be owned and maintained by the School District it appears that you do not need to apply for a variance thru the Public Works Department. Cole Elliott, PE Development Services Manager �r Ka derai Way 33325 8th Ave South Federal Way, WA 98003 Office: (253) 835-2730 Cell: (253) 293-4152 www.CityofFederalWay.com April I, 2019 Commercial Land Use Review Checklist Deviation Request Federal Way Public Schools Page 2 However, upon receiving preliminary Land Use Comments, the City is requiring an official written request. We are proposing the following: 1. Underground detention facilities for Mirror Lake for on -site and off -site improvements 2. Underground detention facilities for Lake Grove for on -site and off -site improvements 3. Underground detention facilities for Wildwood for on -site improvements The improvements as required would not be harmonious with existing street improvements, would not function properly or safely or would not be advantageous to the neighborhood or City as a whole." An above ground detention facility such as an open pond is not appropriate for a school setting. It would increase the risk of student safety. In the school district opinion, the fencing requirements for an above ground facility will not guarantee prevention of student access and will require additional supervision. In addition, above ground detention facilities take away outdoor program space for students. The Outdoor learning areas are crucial to the school district's agenda to provide a diversified learning environment for the community's youth. In summary, the City's acceptance of the deviation request above, the usage of underground detention facilities would be better suited to function safely and be advantageous for a school environment and ultimately the local community. Thank you for your consideration and please do not hesitate to contact me if you have any questions or need additional information. Sincerely, J . ter L. graves, P.E. Project Manager I Sr. Civil Engineer a s s o c i a t e d RESUBMITTEM earth sciences APR 302019 i n c o r p o r a t e d nmrnr rrrrnai.... Subsurface Exploration, Geologic Hazard, and Preliminary Geotechnical Engineering Report LAKE GROVE ELEMENTARY SCHOOL REPLACEMENT Federal Way, Washington FEDERAL WAY SCHOOL DISTRICT Project No. 180212E001 June 14, 2018 Revised February 20, 2019 a s s o c i a t e d earth sciences i n c o r p o r a t e d June 14, 2018 Revised February 20, 2019 Project No. 180212EO01 Federal Way School District 1211 South 332nd Street Federal Way, Washington 98003 Attention: Ms. Ray Vefik Subject: Subsurface Exploration, Geologic Hazard, and Preliminary Geotechnical Engineering Report Lake Grove Elementary School Replacement 303 SW 308th Street Federal Way, Washington Dear Mr. Vefik: We are pleased to present copies of the above -referenced report. This report summarizes the results of our subsurface exploration, geologic hazard, and geotechnical engineering studies, and offers preliminary recommendations for the design and development of the proposed project. We were provided with a Topographic Survey provided by AHBL, dated May 8, 2018, and a site plan sketch showing proposed infiltration facility locations, prepared by the Project Civil Engineer, undated, for preparation of this report. Our recommendations are preliminary in that project plans and construction methods were not available at the time this report was written. We should be allowed to review the recommendations presented in this report and modify them, if needed, once final project plans have been formulated. We have enjoyed working with you on this study and are confident that the recommendations presented in this report will aid in the successful completion of your project. If you should have any questions or if we can be of additional help to you, please do not hesitate to call. Sincerely, ASSOCIATED EARTH SCIENCES, INC. Kirkland, Washington W% Kurt D. Merriman, P.E. Senior Principal Engineer KDM/ms-180212EO01-4 - Projects\20180212\KE\W P Kirkland Office 1911 Fifth Avenue I Kirkland, WA 98033 P 1425.827.7701 Mount Vernon Office 1 508 S. Second Street, Suite 1011 Mount Vernon, WA 98273 P 1425.827.7701 Tacoma Office 1 1552 Commerce Street, Suite 102 1 Tacoma, WA 98402 P 1253.722.2992 www.aesgeo.com SUBSURFACE EXPLORATION, GEOLOGIC HAZARD, AND PRELIMINARY GEOTECHNICAL ENGINEERING REPORT LAKE GROVE ELEMENTARY SCHOOL REPLACEMENT Federal Way, Washington Prepared for: Federal Way School District 1211 South 332"d Street Federal Way, Washington 98003 Prepared by: Associated Earth Sciences, Inc. 9115th Avenue Kirkland, Washington 98033 425-827-7701 June 14, 2018 Revised February 20, 2019 Project No. 180212EO01 Subsurface Exploration, Geologic Hazard, and Lake Grove Elementary School Replacement Preliminary Geotechnical Engineering Report Federal Way, Washington Project and Site Conditions I. PROJECT AND SITE CONDITIONS INTRODUCTION Associated Earth Sciences, Inc. (AESI) has prepared this report which presents the results of our subsurface exploration, geologic hazard, and preliminary geotechnical engineering study for the replacement of the Lake Grove Elementary School located in Federal Way, Washington. Our recommendations are preliminary in that the project is still in the design phase. The recommendations provided in this report are based on a review of a topographic survey by AHBL, dated May 8, 2018; our conversations with the design team; and our experience working in the project area. The site location is shown on the "Vicinity Map," Figure 1. The approximate locations of explorations completed for this study are shown on the "Site and Exploration Plan," Figure 2, and on the "Current Aerial Lidar-Based Topography," Figure 3. Interpretive exploration logs of the subsurface explorations completed for this study are included in Appendix A. 1.1 Purpose and Scone The purpose of this study was to provide subsurface data to be used in the design and development of the above -referenced project. Our study included reviewing selected available geologic literature, advancing eleven exploration borings and completing one as a groundwater monitoring well, and performing geologic studies to assess the type, thickness, distribution, and physical properties of the subsurface sediments and shallow groundwater. Geotechnical engineering studies were completed to formulate preliminary recommendations related to site preparation and grading, the type of suitable foundations and floors, allowable foundation soil bearing pressures, anticipated foundation and floor settlement, pavement recommendations, drainage considerations, and shallow infiltration feasibility. This report summarizes our current fieldwork and offers preliminary recommendations based on our present understanding of the project. We recommend that we be allowed to review the recommendations presented in this report and revise them, if needed, when a project design has been finalized. 1.2 Authorization We were authorized to proceed by means of a Federal Way Public Schools [FWPS] consultant agreement. This report has been prepared for the exclusive use of FWPS and their agents for specific application to this project. Within the limitations of scope, schedule, and budget, our services have been performed in accordance with generally accepted geotechnical engineering and engineering geology practices in effect in this area at the time our report was prepared. No other warranty, express or implied, is made. June 14, 2018; Revised February 20, 2019 ASSOCIATED EARTH SCIENCES, INC. TG/ms-180212E001-4-Projeds%20180212►KEJWP Page 1 Subsurface Exploration, Geologic Hazard, and Lake Grove Elementary School Replacement Preliminary Geotechnical Engineering Report Federal Way, Washington Project and Site Conditions 2.0 PROJECTAND SITE DESCRIPTION The project site is that of the existing Lake Grove Elementary School campus located in Federal Way, Washington. The project site is comprised of a single nearly rectangular parcel approximately 9.4 acres in area. The current site development includes a school campus with a single, irregularly shaped school building located at the central and west portions of the parcel. Other site features include existing paved driveways, paved parking lots, walkways, sports fields, playfields, portable classroom buildings, and utilities. Site topography is generally level in the vicinity of the existing school building. A west -facing slope ranging in height from approximately 20 feet to 30 feet separates the lower school building, adjacent driveways, and play areas from the upper baseball fields. This slope is naturally vegetated with mature evergreen trees, deciduous trees, shrubs, and grass areas. At the time this report was prepared, this project was in the conceptual planning stage. We anticipate that the project will include the construction of one or more new school buildings near the footprint of the existing school building. We also understand the project design is considering infiltration of stormwater runoff from new impervious areas. 3.0 SUBSURFACE EXPLORATION Our field study included advancing eleven exploration borings and completing one as a groundwater monitoring well. The conclusions and recommendations presented in this report are based on the explorations completed for this study. The number, locations, and depths of the explorations were completed within site and budgetary constraints. 3.1 Exploration Borings The exploration borings were completed by advancing hollow -stem auger tools with a truck -mounted drill rig. During the drilling process, samples were obtained at generally 2%2-foot- and 5-foot-depth intervals. The exploration borings were continuously observed and logged by a representative from our firm. The exploration logs presented in Appendix A are based on the field logs, drilling action, and observation of the samples secured. Disturbed, but representative samples were obtained by using the Standard Penetration Test (SPT) procedure in accordance with American Society for Testing and Materials (ASTM) D-1586. This test and sampling method consists of driving a standard 2-inch, outside -diameter, split -barrel sampler a distance of 18 inches into the soil with a 140-pound hammer free -falling a distance of 30 inches. The number of blows for each 6-inch interval is recorded, and the number of blows required to drive the sampler the final 12 inches is known as the Standard Penetration Resistance ("N") or blow count. If a total of 50 is recorded within one 6-inch June 14, 2018; Revised February 20, 2019 ASSOCIATED EARTH SCIENCES, INC. TG/ms-180212E001.4-ProjecUJ20180212JKEJWP Page 2 Subsurface Exploration, Geologic Hazard, and Lake Grove Elementary School Replacement Preliminary Geotechnical Engineering Report Federal Way, Washington Project and Site Conditions interval, the blow count is recorded as the number of blows for the corresponding number of inches of penetration. The resistance, or N-value, provides a measure of the relative density of granular soils or the relative consistency of cohesive soils; these values are plotted on the attached exploration boring logs. The samples obtained from the split -barrel sampler were classified in the field and representative portions placed in watertight containers. The samples were then transported to our laboratory for further visual classification and laboratory testing, as summarized in this report. 3.2 Monitoring Well A groundwater monitoring well was installed at the project site in EB-SW to allow for documentation and monitoring of groundwater levels below the site. The wells consist of 2-inch-diameter polyvinyl chloride (PVC) Schedule-40 well casing with threaded connections. The lower 10 feet of the well is a finely slotted (0.010-inch machine slot) well screen to permit water inflow. The annular space around the well screen was backfilled with silica sand, and the upper portion of annulus was sealed with bentonite chips and grout. A steel flush mount monument was placed over the top of the wellhead for protection. The as -built configuration of the well is illustrated on the boring logs in Appendix A. Subsequent to the well installation, the well was developed and pressure transducers with automatic data loggers were installed in the well to collect water levels. The monitoring well was completed to a depth of 101 feet below the surface with the bottom 10 feet screened in Vashon advance outwash sediments. No groundwater was observed in the well at the time of drilling. 4.0 SUBSURFACE CONDITIONS Subsurface conditions at the project site were inferred from the field explorations accomplished for this study, visual reconnaissance of the site, and review of selected applicable geologic literature. Because of the nature of exploratory work below ground, extrapolation of subsurface conditions between field explorations is necessary. It should be noted that differing subsurface conditions may sometimes be present due to the random nature of deposition and the alteration of topography by past grading and/or filling. The nature and extent of any variations between the field explorations may not become fully evident until construction. The general distribution of geologic units is shown on the exploration logs. The explorations typically encountered Vashon-age native sediments consisting of dense grading to very dense lodgement till, Vashon advance outwash, or Vashon lodgement June 14, 2018; Revised February 20, 2019 ASSOCIATED EARTH SCIENCES, INC TG/ms-180212E001-4-ProjectsJ20180212JKEJWP Page 3 Subsurface Exploration, Geologic Hazard, and Lake Grove Elementary School Replacement Preliminary Geotechnical Engineering Report Federal Way, Washington Project and Site Conditions till/Vashon advance outwash transitional (transitional) sediment underlying existing fill soils. The existing fill extended to depths ranging from 3 feet to 18 feet below the surface. Review of a regional geologic map (Geologic Map of Poverty Bay Quadrangle ZY. King and Pierce Counties, Washington, U.S. Geological Survey (USGS), prepared by Booth et al., 2004) indicates that the subject site is underlain by Vashon lodgement till. Our interpretation of the sediments encountered in our explorations is in partial agreement with the regional geologic mapping. The sediments encountered onsite ranged from fill over lodgement till, transitional lodgement till/advance outwash, and advance outwash. 4.1 Strati ra h Grass/Topsoil A surficial layer of grass, organic topsoil, or both were encountered in exploration borings EB-3, EB-4, EB-9, and EB-11. This organic layer was approximately 4 to 6 inches in thickness. Observed topsoil thickness is shown on the attached subsurface exploration logs. Due to their high organic content, these materials are not considered suitable for foundation, roadway, slab -on -grade floor support, or for use in a structural fill. Fill All exploration borings completed for this study encountered existing fill soils near the surface. The existing fill soils generally consisted of loose to dense, silty, fine to medium or fine to course sand, with some gravel or medium stiff, sandy or gravelly silt. The fill generally extended to depths ranging from 3 feet to 8 feet below the surface. However, Exploration EB-2 encountered 18 feet of sediments we interpreted as existing fill. The fill sediments observed in EB-2 appeared to consist of lodgement till sediments used in a structural fill application (till fill) and were not as dense as the native lodgement till sediments found in other explorations onsite. We reviewed septic plans for the existing school from 1965, provided to us by the Project Architect, to determine why deep existing fill was encountered at the location of EB-2. These plans contain 1-foot contour lines for both the existing and proposed site elevations for the entire site. Based on our review of the plan, we were not able to determine a direct cause for the observed fill thickness, such as an old ravine, deep utility, etc. Explorations completed in the vicinity of EB-2 were EB-10 to the northeast, EB-7 to the west, and EB-6 to the south. These explorations encountered fill near the surface ranging in depth from 3 to 6 feet. Due to its similar appearance to native undisturbed lodgement till and the limited volume of sample secured by hollow -stem auger drilling, it can be difficult to distinguish till fill from undisturbed native lodgement till. Once the building and existing June 14, 2018; Revised February 20, 2019 ASSOCIATED EARTH SCIENCES, INC. TG/ms-180212E001-0-ProjectSJ20180212JKEJWP Page 4 Subsurface Exploration, Geologic Hazard, and Lake Grove Elementary School Replacement Preliminary Geotechnical Engineering Report Federal Way, Washington Project and Site Conditions pavement is demolished, we are available to observe the exposed soils in the vicinity of EB-2 to help determine the vertical and horizontal extent of existing fill soils. Existing fill is not considered suitable for foundation support and may require mitigation for pavement, or slab -on -grade floor support. Excavated existing fill material is suitable for reuse in structural fill applications, if such reuse is specifically allowed by project plans and specifications, if excessively organic and any other deleterious materials are removed, and if moisture content is adjusted to allow compaction to the specified level and to a firm and unyielding condition. Based on our explorations completed for this study, we estimate the observed existing fill was above optimum moisture content for compaction purposes, and therefore may require drying during favorable weather prior to compaction in structural fill applications. Existing fill is not considered suitable for infiltration of stormwater runoff due to its high variability. Vashon Lodgement Till Natural sediments encountered below the fill in explorations EB-1, EB-4, EB-5W, EB-6, EB-7, EB-g, ER-9, and FR-11 generally consisted of very dense. unsorted, non -stratified, silty fine to medium sand with some gravel. We interpret these sediments to be representative of Vashon lodgement till. Where our explorations fully penetrated the till, we encountered till thicknesses that ranged between 5 and 13 feet. Exploration EB-9 encountered 16 feet of lodgement till before it was terminated within the till. Lodgement till was deposited at the base of an active ice sheet and was subsequently compacted by the weight of the overlying glacial ice. Lodgement till typically possesses high -strength and low -compressibility attributes that are favorable for support of foundations, floor slabs, and paving with proper preparation. Excavated lodgement till sediments are suitable for reuse in structural fill applications if specifically allowed by project specifications, and if moisture conditions are adjusted to allow compaction to a firm and unyielding condition at the time of construction. Portions of the lodgement till sediments encountered in our borings were above the optimum for achieving suitable compaction If the moisture content of these sediments is elevated at the time of construction, moisture conditioning of the till could be achieved by spreading out the soil proposed for use as structural fill and aerating it during favorable dry site and weather conditions. Vashon lodgement till is generally considered unsuitable for infiltration of stormwater runoff due to its high fine-grained content and low permeability. Due to the relatively high density and silt content, we anticipate these sediments to be a poor receptor for stormwater infiltration. Vashon Lodgement Till/Vashon Advance Outwash Transitional Sediments underlying the Vashon lodgement till in exploration EB-1, EB-SW, EB-7, and EB-8, and underlying the fill soils in exploration EB-3 and EB-10, generally consisted of fine to coarse June 14, 2018, Revised February 20, 2019 ASSOCIATED EARTH SCIENCES, INC. TG/ms-180212E001-0-ProjedsJ10180111JKEJWP Page 5 Subsurface Exploration, Geologic Hazard, and Lake Grove Elementary School Replacement Preliminary Geotechnical Engineering Report Federal Way, Washington Project and Site Conditions sand with a fines content that ranged from some silt to silty. These sediments have a higher silt content than the encountered Vashon advance outwash, contain a higher coarse -grained sand content then the encountered Vashon lodgement till, and range from till -like diamict to somewhat stratified. We interpreted these sediments as a transitional unit with a grain size somewhere between the typical lodgement till and advance outwash sediments. These sediments are suitable for structural support when properly prepared and were encountered above optimum moisture content for compaction purposes. Excavated transitional sediments are suitable for reuse in structural fill applications if specifically allowed by project specifications, and if moisture conditions are adjusted to allow compaction to a firm and unyielding condition at the time of construction. Vashon Advance Outwash Underlying existing fill soils in explorations EB-2, transitional sediments in EB-3, EB-5W, and EB-10, and lodgement till in exploration EB-4, we encountered sediments interpreted as Vashon advance outwash. These sediments generally consisted of dense to very dense, stratified sand with trace to some silt and trace gravel. These sediments were encountered at depths ranging from 8 feet to 43 feet below the surface and extended beyond the depths explored where encountered. Advance outwash was deposited by meltwater streams from an advancing ice sheet. When properly prepared, these sediments are suitable for foundation support. Excavated advance outwash is suitable for reuse in structural fill applications if specifically allowed by project specifications, and provided it is at or near optimum moisture content. Where permeable and unsaturated, these sediments are a potentially suitable stormwater infiltration receptor. 4.2 Hydrology Groundwater was observed in exploration EB-9 at a depth of 5 feet below the surface. We interpret this shallow groundwater as perched groundwater. Perched groundwater occurs when surface water infiltrates down through relatively permeable soils, such as fill, or weathered sediments, and becomes trapped or "perched" atop a comparatively very low -permeability barrier, such as silty unweathered lodgement till. This water may travel laterally and typically will follow the ground surface topography. The regional groundwater table was not encountered. The Vashon advance outwash was unsaturated to the maximum depth explored of 101 feet (EB-5W). Groundwater conditions, including depth and duration and quantity of seepage should be expected to vary seasonally, and in response to changes in precipitation, soil grain -size distribution, topography, on- and off -site land usage, and other factors. June 14, 2018; Revised February 20, 2019 ASSOCIATED EARTH SCIENCES, INC TG/ms-180212E001-4-Projects�20180211JKEJWP Page 6 Subsurface Exploration, Geologic Hazard, and Lake Grove Elementary School Replacement Preliminary Geotechnical Engineering Report Federal Way, Washington - Project and Site Conditions 3 Laboratory Test Results Nine laboratory grain -size (sieve) analyses were performed by AESI's in-house laboratory on representative selected samples collected from the exploration borings completed for this study. Three tests samples were collected from the transitional Vashon lodgement till/Vashon advance outwash sediments, and six test samples were collected from Vashon advance outwash. The grain -size analyses test results are presented in Appendix B. June 14, 2018; Revised February 20, 2019 ASSOCIATED EARTH SCIENCES, INC TG/ms-180212E001-0-Projecj20180212jKEjWP Page 7 Subsurface Exploration, Geologic Hazard, and Lake Grove Elementary School Preliminary Geotechnical Engineering Report Federal Way, Washington Geologic Hazards and Mitigations II. GEOLOGIC HAZARDS AND MITIGATIONS The following discussion of potential geologic hazards is based on the geologic, slope, and shallow groundwater conditions as observed and discussed herein. 5.0 LANDSLIDE HAZARDS AND MITIGATIONS Federal Way Revised Code (FWRC) Section 19.05.070 defines Landslide Hazard Areas (LHA). A west -facing slope ranging in height from approximately 20 feet to 30 feet that separates the lower school building from the upper baseball fields and portions of this slope exceed inclinations of 40 percent based on our review of the AHBL topographic survey. The portions of the slope configurations that achieve both the minimum inclination of 40 percent and the minimum height of 10 feet are classified as a LHA. For protection from LHAs the FWRC Section 19.145.230 requires a standard buffer of 50 feet from the top and toe of the LHA, which can be reduced with further geotechnical study. We are available to address buffer reductions once a site plan has been formulated, if they are required for site layout. 6.0 SEISMIC HAZARDS AND MITIGATIONS Earthquakes occur regularly in the Puget Lowland. Most of these events are small and are not felt by people. However, large earthquakes do occur, as evidenced by the 2001, 6.8-magnitude event; the 1965, 6.5-magnitude event; and the 1949, 7.2-magnitude event. The 1949 earthquake appears to have been the largest in this region during recorded history and was centered in the Olympia area. Evaluation of earthquake return rates indicates that an earthquake of the magnitude between 5.5 and 6.0 is likely within a given 20-year period. Generally, there are four types of potential geologic hazards associated with large seismic events: 1) surficial ground rupture, 2) seismically induced landslides, 3) liquefaction, and 4) ground motion. The potential for each of these hazards to adversely impact the proposed project is discussed below. 6.1 Surficial Ground Rupture The project area is located approximately 15 miles south of the Seattle Fault Zone and within the mapped limits of the Tacoma Fault Zone. Our current understanding of the Seattle Fault suggests that several fault traces are spread across a relatively wide zone. Recent studies by the USGS (e.g., Johnson et al., 1994, Origin and Evolution of the Seattle Fault and Seattle Basin, Washington, Geology, v. 22, p. 71-74 and Johnson et al., 1999, Active Tectonics of the June 14, 2018; Revised February 20, 2019 ASSOCIATED EARTH SCIENCES, INC. TG/ms-180212E001-4 - Projeas120180211 JKE►WP Page 8 Subsurface Exploration, Geologic Hazard, and Lake Grove Elementary School Preliminary Geotechnical Engineering Report Federal Way, Washington Geologic Hazards and Mitigations Seattle Fault and Central Puget Sound Washington - Implications for Earthquake Hazards, Geological Society of America Bulletin, July 1999, v. 111, n. 7, p. 1042-1053) have provided evidence of surficial ground rupture along a northern splay of the Seattle Fault. The recognition of this fault is relatively new, and data pertaining to it are limited, with the studies still ongoing. According to the USGS studies, the latest movement of this fault was about 1,100 years ago when about 20 feet of surficial displacement took place. This displacement can presently be seen in the form of raised, wave -cut beach terraces along Alki Point in West Seattle and Restoration Point at the south end of Bainbridge Island. The recurrence interval of movement along this fault system is still unknown, although it is hypothesized to be in excess of several thousand years. Geophysical surveys of the Puget Lowland in 1998 suggested the presence of a fault zone along the north side of the Tacoma basin generally between Tacoma and the south end of Hood Canal (Upper Crustal Structure in the Puget Lowland, Washington: Results from 1998 Seismic Hazards Investigation in Puget Sound, Journal of Geophysical research, v. 106, p. 13,541-13,564, by T.M. Brocher, T. Parsons, R.A. Blakely, N.I. Christiansen, M.A. Fisher, R.E. Wells, and SHIPS Working Group, 2001). More recent studies by the USGS have provided evirienra of ci,rfirial ground rupture along the Tacoma Fault near Burly, Washington (The Catfish Lake Scarp, Allyn, Washington: Preliminary Field Data and Implications for Earthquake Hazards Posed by The Tacoma Fault, USGS Open -File Report 03-455, by B.L. Sherrod, A.R. Nelson, H.M. Kelsey, T.M. Brocher, R.J. Blakely, C.S. Weaver, N.K. Rountree, S.B. Rhea, and B.S. Jackson, 2003). The recognition of this fault is relatively new, and data pertaining to it is limited, with studies still ongoing. According to the USGS studies, the latest movement of this fault was about 1,100 years ago when several meters of surficial displacement took place. This displacement can presently be seen in the form of raised tidal flats in the Burly Lagoon, Lynch Bay, and North Cove, resulting in the present day freshwater marshes and forested lowlands. Further evidence of the faulting activity in this system has been seen at Wollochet Bay, where forested areas were inundated by water. Additionally, linear fault scarp features in the ground surface were exposed in recent Light Detection and Ranging (LIDAR) maps. The scarp features are located near Allyn, Washington, and have been described as trending parallel to the Tacoma Fault system. Studies also point to the fault system continuing across the Puget Sound, and it is inferred as continuing through Commencement Bay and the Puyallup River Delta. The slip rate along the Tacoma Fault is thought to be approximately 2 millimeters per year. However, very little is known about the recurrence interval of earthquakes along the Tacoma Fault. Related fault systems in the Puget Sound region have been hypothesized to have reoccurrence intervals in excess of several thousand years. Due to the suspected long recurrence interval, the potential for surficial ground rupture is considered to be low during the expected life of the proposed development. No mitigation efforts beyond complying with the requirements of the local jurisdictions and the 2015 International Building Code (IBC) are recommended for this site. June 14, 2018, Revised February 20, 2019 ASSOCIATED EARTH SCIENCES, INC: TG/ms-180212E001-4-ProjectsJ20180212JKEJWP Page 9 Subsurface Exploration, Geologic Hazard, and Lake Grove Elementary School Preliminary Geotechnical Engineering Report Federal Way, Washington Geologic Hazards and Mitigations 6.2 Seismically Induced Landslides It is our opinion that the risk of damage to the proposed structures by seismically induced landsliding during a design -level seismic event is low. No quantitative slope stability analysis was completed, and none is warranted for the project as currently proposed, in our opinion. 6.3 Liquefaction Liquefaction is a temporary loss in soil shear strength that can occur when loose granular soils below the groundwater table are exposed to cyclic accelerations, such as those that occur during earthquakes. The observed site soils were relatively dense and unsaturated and are not expected to be prone to liquefaction. A detailed liquefaction hazard analysis was not performed as part of this study, and none is warranted, in our opinion. 6.4 Seismic Site Class 2015 International Building Code In our opinion, the subsurface conditions at the site are consistent with seismic Site Class "D" in accordance with the 2015 IBC, and the publication ASCE 7 referenced therein, the most recent version of which is ASCE 7-10. 7.0 EROSION CONTROL The definition for Erosion Hazard Area is provided in Section 19.05.070(1) of the FWRC and is provided below. "Erosion hazard areas" are those areas identified by the U.S. Department of Agriculture's (USDA) Natural Resource Conservation Service (NRCS) as having a moderate to severe or severe to very severe rill and inter -rill erosion hazard due to natural agents such as wind, rain, splash, frost action or stream flow; those areas containing the following group of soils when they occur on slopes of 15 percent or greater. Alderwood-Kitsap ("W"), Alderwood gravelly sandy loam ("AgD"), Kitsap silt loam ("KpD"), Everett ("EvD"), and Indianola ("InD"); and those areas impacted by shore land and/or stream bank erosion. Review of the NRCS soil survey indicates that the majority of the site consists of Alderwood gravelly sandy loam, 0 to 8 percent slopes. The Alderwood soil series forms from the weathering of glacial till, somewhat consistent with soils encountered in several of our explorations. Slopes do exist east of the existing school building that are up to 40-percent inclination, and therefore meet the requirement of an erosion hazard area. We have provided erosion mitigation recommendations in the following section. It is our opinion that if the recommendations provided in this report are followed: June 14, 2018; Revised February 20, 2019 ASSOCIATED EARTH SCIENCES, INC. TG/ms-180212E001-4 - ProjectsJ20180112JKEJWP Page 10 Subsurface Exploration, Geologic Hazard, and Lake Grove Elementary School Preliminary Geotechnical Engineering Report Federal Way, Washington Geologic Hazards and Mitigations ■ The project will not increase surface water discharge or sedimentation to adjacent properties or stormwater systems beyond predevelopment conditions, • The improvement will not decrease slope stability on adjacent properties, and • The improvement will not adversely impact other critical areas. In order to reduce the amount of sediment transported off the site during construction, the following recommendations should be followed. • Silt fencing should be placed around the lower perimeter of all cleared area(s). The fencing should be periodically inspected and maintained as necessary to ensure proper function. To the extent possible, earthwork -related construction should proceed during the drier periods of the year and disturbed areas should be revegetated as soon as possible. Temporary erosion control measures should be maintained until permanent erosion I.UfltrUl fI1CdJlAles are established. • Areas stripped of vegetation during construction should be mulched and hydroseeded, replanted as soon as possible, or otherwise protected. During winter construction, hydroseeded areas should be covered with clear plastic to facilitate grass growth. • If excavated soils are to be stockpiled on the site for reuse, measures should be taken to reduce the potential for erosion from the stockpile. These could include, but are not limited to, covering the pile with plastic sheeting, the use of low stockpiles in flat areas, and the use of straw bales/silt fences around pile perimeters. ® Interceptor swales with rock check dams should be constructed to divert stormwater from construction areas and to route collected stormwater to an appropriate discharge location. ■ A rock construction entrance should be provided to reduce the amount of sediment transported off -site on truck tires. • All stormwater from impermeable surfaces, including driveways and roofs, should be tight -lined into approved facilities and not be directed onto or above steeply sloping areas. • Sediment track -out onto City streets shall be avoided. June 14, 2018; Revised February 20, 2019 ASSOCIATED EARTH SCIENCES, INC. TG/ms-180212E001-4-Project5J20180212JKEJWP Page 11 Subsurface Exploration, Geologic Hazard, and Lake Grove Elementary School Preliminary Geotechnical Engineering Report Federal Way, Washington Preliminary Design Recommendations III. PRELIMINARY DESIGN RECOMMENDATIONS 8.0 INTRODUCTION Our explorations indicate that, from a geotechnical engineering standpoint, the proposed project is feasible provided the recommendations contained herein are properly followed. Our explorations generally encountered dense to very dense glacial sediments underlying existing fill soils. Existing fill up to 18 feet deep was encountered in exploration EB-2. Other portions of the site that we explored also encountered surficial fill soils with depths ranging from 3 feet to 8 feet below the surface. Existing fill soils will require mitigation under areas of new foundations. Mitigation options will depend on the thickness of the existing fill soils and include removal and replacement with structural fill or a deep foundation system that fully penetrates the existing fill soils. Existing fill will require remedial preparation prior to constructing new roads and parking lots. The following report sections provide additional recommendations regarding site preparation, structural fill, grading, foundations, floor support, drainage, and pavement recommendations. Infiltration is potentially feasible within the transitional and advance outwash sediments, where they are encountered as permeable and unsaturated. Based on the grain -size analysis and fines content of these sediments, the advance outwash sediments provide the best potential for infiltration when compared to the transitional sediments. Vashon advance outwash was encountered underlying the surficial fill soils, Vashon lodgement till, in the vicinity of proposed stormwater facilities identified by the Project Civil Engineer (EB-4 and EB-SW). Moderate to deep infiltration methods will be necessary in order to convey stormwater to the targeted receptor horizon. Due to the presence of soils considered not suitable for use as an infiltration receptor such as fill and lodgment till, shallow infiltration methods are considered infeasible. 9.0 SITE PREPARATION Site preparation of building and paving areas should include removal of all grass, trees, brush, debris, and any other deleterious materials. All existing fill beneath planned foundation areas should be removed, unless a deep foundation system or ground improvement methods are proposed. Buried utilities should be removed from planned foundation areas, and should be abandoned in place or removed from below planned new paving. Any depressions below planned final grades caused by demolition activities should be backfilled with structural fill or controlled density fill (CDF) depending on the bearing pressures required for foundations. June 14, 2018; Revised February 20, 2019 ASSOCIATED EARTH SCIENCES, INC TG/ms-180212E001-4-Projects120180112JKEJWP Page 12 Subsurface Exploration, Geologic Hazard, and Lake Grove Elementary School Preliminary Geotechnical Engineering Report Federal Way, Washington Preliminary Design Recommendations Existing topsoil should be stripped from structural areas. The actual observed in -place depth of grass and topsoil at the exploration locations is presented on the exploration logs in Appendix A. After stripping, remaining roots and stumps should be removed from structural areas. All soils disturbed by stripping and grubbing operations should be recompacted as described below for structural fill. Once excavation to subgrade elevation is complete, the resulting surface should be proof -rolled with a loaded dump truck or other suitable equipment. Any soft, loose, yielding areas or areas exposing excessively organic material should be excavated to exposed suitable bearing soils. The subgrade should then be compacted to at least 95 percent of the modified Proctor maximum dry density, as determined by the ASTM D-1557 test procedure. Structural fill can then be placed to achieve desired grades, if needed. 9.1 Temoorary Cut Slopes In our opinion, stable construction slopes should be the responsibility of the contractor and should be determined during construction. For estimating purposes, however, temporary, unsupported cut slopes can be planned at 1.5H:1V (Horizontal:Vertical) in unsaturated existing fill, weathered glacial till, the transitional sediments, or advance outwash. Temporary slopes of 1H:1V can be planned in unsaturated, unweathered lodgement till. These slope angles are for areas where groundwater seepage is not present at the faces of the slopes. If ground or surface water is present when the temporary excavation slopes are exposed, flatter slope angles may be required. As is typical with earthwork operations, some sloughing and raveling may occur, and cut slopes may have to be adjusted in the field. In addition, WISHA/OSHA regulations should be followed at all times. 9.2 Site Drainage and Surface Water Control The site should be graded to prevent water from ponding in construction areas and/or flowing into excavations. Exposed grades should be crowned, sloped, and smooth drum -rolled at the end of each day to facilitate drainage. Accumulated water must be removed from subgrades and work areas immediately prior to performing further work in the area. Equipment access may be limited, and the amount of soil rendered unfit for use as structural fill may be greatly increased if drainage efforts are not accomplished in a timely sequence. If an effective drainage system is not utilized, project delays and increased costs could be incurred due to the greater quantities of wet and unsuitable fill, or poor access and unstable conditions. During construction, surface water should be routed away from the site slopes and conveyed to an appropriate discharge location. At no time should uncontrolled surface water flow onto the site slopes. June 14, 2018; Revised February 20, 2019 ASSOCIATED EARTH SCIENCES, INC TG/ms-180212EO01-4-ProjectsJ20180211JKEJWP Page 13 Subsurface Exploration, Geologic Hazard, and Lake Grove Elementary School Preliminary Geotechnical Engineering Report Federal Way, Washington Preliminary Design Recommendations Final exterior grades should promote free and positive drainage away from the proposed new building at all times. Water must not be allowed to pond or to collect adjacent to foundations or within the immediate building area. We recommend that a gradient of at least 3 percent for a minimum distance of 10 feet from the building perimeters be provided, except in paved locations. In paved locations, a minimum gradient of 1 percent should be provided, unless provisions are included for collection and disposal of surface water adjacent to the additions. 9.3 Site Disturbance Most of the on -site soils contain fine-grained material, which makes them moisture -sensitive and subject to disturbance when wet. The contractor must use care during site preparation and excavation operations so that the underlying soils are not softened. If disturbance occurs, the softened soils should be removed and the area brought to grade with structural fill. 9.4 Winter Construction The existing fill material and lodgement till contain substantial silt and are considered highly moisture -sensitive. Soils excavated onsite will likely require drying during favorable dry weather conditions to allow their reuse in structural fill applications. Care should be taken to seal all earthwork areas during mass grading at the end of each workday by grading all surfaces to drain and sealing them with a smooth -drum roller. Stockpiled soils that will be reused in structural fill applications should be covered whenever rain is possible. If winter construction is expected, crushed rock fill should be used to provide construction staging areas where exposed soil is present. The stripped subgrade should be observed by the geotechnical engineer, and should then be covered with a geotextile fabric, such as Mirafi 50OX or equivalent. Once the fabric is placed, we recommend using a crushed rock fill layer at least 10 inches thick in areas where construction equipment will be used. Soil cement treatment is another approach to providing a workable site during the winter. We are available to provide a more detailed cement -treatment plan on request, and if allowed by the governing jurisdiction. 9.5 Frozen Subgrades If earthwork takes place during freezing conditions, all exposed subgrades should be allowed to thaw, and then be recompacted prior to placing subsequent lifts of structural fill or foundation components. Alternatively, the frozen material could be stripped from the subgrade to reveal unfrozen soil prior to placing subsequent lifts of fill or foundation components. The frozen soil should not be reused as structural fill until allowed to thaw and adjusted to the proper moisture content, which may not be possible during winter months. June 14, 2018; Revised February 20, 2019 ASSOCIATED EARTH SCIENCES, INC. TG/ms-180212E001-4-ProjeM1201802111KE1WP Page 14 Subsurface Exploration, Geologic Hazard, and Lake Grove Elementary School Preliminary Geotechnical Engineering Report Federal Way, Washington Preliminary Design Recommendations 10.0 STRUCTURAL FILL All references to structural fill in this report refer to subgrade preparation, fill type, placement, and compaction of materials, as discussed in this section. If a percentage of compaction is specified under another section of this report, the value given in that section should be used. For backfill of buried utilities in the right-of-way, the backfill should be placed and compacted in accordance with the City of Federal Way codes and standards. After stripping, planned excavation, and any required overexcavation have been performed to the satisfaction of the geotechnical engineer/engineering geologist, the surface of the exposed ground should be recompacted to a firm and unyielding condition. If the subgrade contains too much moisture, adequate recompaction may be difficult or impossible to obtain, and should probably not be attempted. In lieu of recompaction, the area to receive fill should be blanketed with washed rock or quarry spalls to act as a capillary break between the new fill and the wet subgrade. Where the exposed ground remains soft and further overexcavation is impractical, placement of an engineering stabilization fabric may be necessary to prevent contamination of the free -draining layer by silt migration from below. After recompaction of the exposed ground is tested and approved, or a free -draining rock course is laid, structural fill may be placed to attain desired grades. Structural fill is defined as non -organic soil, acceptable to the geotechnical engineer, placed in maximum 8-inch loose lifts, with each lift being compacted to 95 percent of ASTM D-1557. The top of the compacted fill should extend horizontally outward a minimum distance of 3 feet beyond the locations of the perimeter footings or roadway edges before sloping down at a maximum angle of 2H:1V. The contractor should note that any proposed fill soils should be evaluated by AESI prior to their use in fills. This would require that we have a sample of the material at least 72 hours in advance to perform a Proctor test and determine its field compaction standard. Soils in which the amount of fine-grained material (smaller than the No. 200 sieve) is greater than approximately 5 percent (measured on the minus No. 4 sieve size) should be considered moisture -sensitive. The existing fill and native soils encountered at the project site contain substantially more than 5 percent fine-grained material. Use of moisture -sensitive soil in structural fills should be limited to favorable dry weather and dry subgrade conditions. Construction equipment traversing the site when the soils are wet can cause considerable disturbance. If fill is placed during wet weather or if proper compaction cannot be obtained, a select import material consisting of a clean, free -draining gravel and/or sand should be used. Free -draining fill consists of non -organic soil, with the amount of fine-grained material limited to 5 percent by weight when measured on the minus No. 4 sieve fraction, and at least 25 percent retained on the No. 4 sieve. June 14, 2018; Revised February 20, 2019 ASSOCIATED EARTH SCIENCES, INC. TG/ms-180212E001-0-Projects►201801111KEIWP Page 15 Subsurface Exploration, Geologic Hazard, and Lake Grove Elementary School Preliminary Geotechnical Engineering Report Federal Way, Washington Preliminary Design Recommendations A representative from our firm should observe the stripped subgrade and be present during placement of structural fill to observe the work and perform a representative number of in -place density tests. In this way, the adequacy of the earthwork may be evaluated as filling progresses, and any problem areas may be corrected at that time. It is important to understand that taking random compaction tests on a part-time basis will not assure uniformity or acceptable performance of a fill. As such, we are available to aid the Client in developing a suitable monitoring and testing program. 11.0 FOUNDATIONS Our explorations generally encountered existing fill soils overlying dense glacial, native sediments in the vicinity of the existing school building. The existing fill extended to depths that ranged from a few feet up to 18 feet below the surface. Conventional spread footings may be used in areas where relatively shallow depths of fill soils were encountered. In areas where thicker fills are present, it may be more economical to support new foundations on a deeper foundation system. We have provided several foundation options below. Once a building layout has been finalized, we recommend that we are able to review the layout and update our recommendations or complete more explorations to determine suitable foundation type, if necessary. 11.1 Spread Footings Conventional spread footings and column pads may be used for building support when founded either directly on the undisturbed, dense to very dense native sediments or on new structural fill placed above the suitable native deposits. We recommend that an allowable foundation soil bearing pressure of 3,500 pounds per square foot (psf) be utilized for design purposes, including both dead and live loads. If foundations are underlain by very dense lodgement till or Vashon advance outwash alone, or these native sediments and CDF, an allowable foundation soil bearing pressure of 5,000 psf should be used for design. An increase of one-third may be used for short-term wind or seismic loading. Foundation areas should be deepened, if necessary, to expose sediments suitable for the support of the recommended bearing pressures. An increase of one-third may be used for short-term wind or seismic loading. It should be noted that the area bounded by lines extending downward at 1H:1V from any footing must not intersect another footing or filled area. In addition, a 1.5H:1V line extending down from any footing must not daylight because sloughing or raveling may eventually undermine the footing. Thus, footings should not be placed near the edge of steps or cuts in the bearing soils. June 14, 2018; Revised February 20, 2019 ASSOCIATED EARTH SCIENCES, INC. TG/ms-180212ED01.4 - Projects j201802111 KEjWP Page 16 Subsurface Exploration, Geologic Hazard, and Lake Grove Elementary School Preliminary Geotechnical Engineering Report Federal Way, Washington Preliminary Design Recommendations Perimeter footings should be buried at least 18 inches into the surrounding soil for frost protection. However, all footings must penetrate to the prescribed bearing stratum, and no footing should be founded in or above organic or loose soils. Anticipated settlement of footings founded as recommended should be less than 1 inch with differential settlement one-half of the anticipated total settlement. Most of this movement should occur during initial dead load applications. However, disturbed soil not removed from footing or mat excavations prior to concrete placement could result in increased settlements. All footing areas should be observed by AESI prior to placing concrete to verify that the design bearing capacity of the soils has been attained and that construction conforms to the recommendations contained in this report. Such observation may be required by the City of Federal Way. A perimeter foundation drain system should be provided as discussed under the "Drainage Considerations" section of this report. The contractor must use care during site preparation and excavation operations so that the underlying soils are not softened. If disturbance occurs, the softened soils should be removed and foundations extended down to competent natural soil. Once the base of the excavation is reached, consideration should be given to "armoring" the exposed subgrade with a thin layer of rock to provide a working surface during foundation construction. We recommend a 6-inch layer of crushed rock for this purpose. 11.2 Rock -Filled Trenches Proposed foundations can be supported on rock -filled trenches excavated through the unsuitable soils to expose suitable native soils. Rock -filled trenches below foundations should extend laterally beyond all foundation elements by at least 1 foot, and should have a minimum width of 4 feet. All rock trenches should be excavated down to expose underlying, dense native sediments. Because of the potential for caving, the actual trench width may be greater than specified. After the bearing stratum has been reached, the trench should be immediately backfilled. We recommend the use of "railroad ballast" or 2- to 4-inch-size crushed rock for backfill. The crushed rock must be tamped into place to achieve a tightly packed mass; this may be done with either a "Hoepac"-type compactor mounted on the backhoe, or more typically, with the bucket of the backhoe itself. Once the foundation subgrade is achieved, a shallow foundation can be prepared as described above. 11.3 Stone Columns Stone columns consist of columns of compacted crushed rock below the building pad. Installation of stone columns results in significant densification of the surrounding soils, as well June 14, 2018; Revised February 20, 2019 ASSOCIATED EARTH SCIENCES, INC TG/ms-180212E001-0-Projects1201802121KEIWP Page 17 Subsurface Exploration, Geologic Hazard, and Lake Grove Elementary School Preliminary Geotechnica/ Engineering Report Federal Way, Washington Preliminary Design Recommendations as a network of compacted stone columns that transmit loads directly to more competent soils at depth. There is little consistency between different contractors who install stone columns with respect to their installation equipment and methods. The diameters, depth capability, compactive energy, and other critical factors of each contractor's equipment must be considered when designing a stone column foundation system, and therefore such systems are typically designed by the contractor who installs them. Once stone columns are installed, the building is constructed with a conventional shallow foundation system above a subgrade that has been improved through installation of stone columns. In our opinion, using a system of stone columns, it would be possible to achieve an allowable foundation soil bearing pressure of 5,000 psf. 11.4 Drainage Considerations Foundations should be provided with foundation drains. Drains should consist of rigid, perforated PVC pipe surrounded by washed pea gravel. The drains should be constructed with sufficient gradient to allow gravity discharge away from the proposed building. Roof and surface runoff should not discharge into the footing drain system, but should be handled by a separate, rigid, tightline drain. In planning, exterior grades adjacent to walls should be sloped downward away from the proposed building to achieve surface drainage. 12.0 FLOOR SUPPORT Floor slabs can be supported on dense to very dense native soils, on new structural fill placed above native sediments, or on a minimum of 2 feet of new structural fill where existing fill soils are encountered. Floor slabs should be cast atop a minimum of 4 inches of clean, washed, crushed rock or pea gravel to act as a capillary break. Areas of subgrade that are disturbed (loosened) during construction should be compacted to a non -yielding condition prior to placement of capillary break material. Floor slabs should also be protected from dampness by an impervious moisture barrier at least 10 mils thick. The moisture barrier should be placed between the capillary break material and the concrete slab. 13.0 FOUNDATION WALLS The following preliminary recommendations may be applied to conventional walls up to 8 feet tall. We should be allowed to offer situation -specific input for taller walls. All backfill behind foundation walls or around foundation units should be placed as per our recommendations for structural fill and as described in this section of the report. Horizontally backfilled walls, which are free to yield laterally at least 0.1 percent of their height, may be designed to resist lateral earth pressure represented by an equivalent fluid equal to 35 pounds per cubic foot (pcf). Fully June 14, 2018; Revised February 20, 2019 ASSOCIATED EARTH SCIENCES, INC. TG/ms-180212E001-0-ProjeMJ201801121KEJWP Page 18 Subsurface Exploration, Geologic Hazard, and Lake Grove Elementary School Preliminary Geotechnical Engineering Report Federal Way, Washington Preliminary Design Recommendations restrained, horizontally backfilled, rigid walls that cannot yield should be designed for an equivalent fluid of 50 pcf. Walls with sloping backfill up to a maximum gradient of 2H:1V should be designed using an equivalent fluid of 55 pcf for yielding conditions or 75 pcf for fully restrained conditions. If parking areas are adjacent to walls, a surcharge equivalent to 2 feet of soil should be added to the wall height in determining lateral design forces. As required by the 2015 IBC, retaining wall design should include a seismic surcharge pressure in addition to the equivalent fluid pressures presented above. Considering the site soils and the recommended wall backfill materials, we recommend a seismic surcharge pressure of 5H and 10H psf, where H is the wall height in feet for the "active" and "at -rest" loading conditions, respectively. The seismic surcharge should be modeled as a rectangular distribution with the resultant applied at the midpoint of the walls. The lateral pressures presented above are based on the conditions of a uniform backfill consisting of excavated on -site soils, or imported structural fill compacted to 90 percent of ASTM D-1557. A higher degree of compaction is not recommended, as this will increase the pressure acting on the walls. A lower compaction may result in settlement of the slab -on -grade or other structures supported above the walls. Thus, the compaction level is critical and must be tested by our firm during placement. Surcharges from adjacent footings or heavy construction equipment must be added to the above values. Perimeter footing drains should be provided for all retaining walls, as discussed under the "Drainage Considerations" section of this report. It is imperative that proper drainage be provided so that hydrostatic pressures do not develop against the walls. This would involve installation of a minimum 1-foot-wide blanket drain to within 1 foot of finish grade for the full wall height using imported, washed gravel against the walls. 13.1 Passive Resistance and Friction Factors Lateral loads can be resisted by friction between the foundation and the natural soils or supporting structural fill soils, and by passive earth pressure acting on the buried portions of the foundations. The foundations must be backfilled with structural fill and compacted to at least 95 percent of the maximum dry density to achieve the passive resistance provided below. We recommend the following allowable design parameters: • Passive equivalent fluid = 250 pcf • Coefficient of friction = 0.35 June 14, 2018; Revised February 20, 2019 ASSOCIATED EARTH SCIENCES, INC. TG/ms-180212E001-4-ProjectsJ20180212JKEJWP Page 19 Subsurface Exploration, Geologic Hazard, and Lake Grove Elementary School Preliminary Geotechnical Engineering Report Federal Way, Washington Preliminary Design Recommendations 14.0 INFILTRATION FEASIBILITY Generally, our explorations encountered either Vashon lodgement till, Vashon advance outwash or Vashon lodgement till/Vashon advance outwash transitional sediments underlying existing fill. The existing fill soils extended to depths ranging from 3 feet to 18 feet below the surface. Existing fill soils are not considered suitable for use as an infiltration receptor due to their variability. Vashon lodgement till is also considered not suitable for use as an infiltration receptor due to its high fine-grained content and low permeability. Infiltration is potentially feasible within the transitional or advance outwash sediments, where they are encountered as permeable and unsaturated. Based on the grain -size analysis and fines content of these sediments, the advance outwash sediments provide the best potential for infiltration when compared to the transitional sediments. Vashon advance outwash was encountered at depths ranging from 13 feet to 43 feet below the surface. Explorations EB-4, EB-5W, EB-9, and EB-11 were completed at the preliminary location of proposed infiltration facilities. The infiltration facility locations were provided to AESI on a sketch prepared by the Project Civil Engineer and provided in Appendix C. Of these explorations, EB-4 and EB-5W encountered permeable unsaturated sediments favorable for infiltration. The Vashon advance outwash was encountered at depths of 13 feet and 33 feet below the surface in EB-3 and EB-4W, respectively, and extended beyond the depths explored in both explorations. No groundwater was observed in either exploration. Explorations EB-9 and EB-11 were completed to depths of 21 feet and 16 feet below the surface, respectively, and both encountered relatively impermeable Vashon lodgement till. Due to the depth below existing grade where the advance outwash has been observed and inferred, it appears likely that a deeper infiltration strategy would be required to utilize the advance outwash receptor. Alternatives such as Underground Injection Control (UIC) wells would likely work well, and other strategies such as open -bottomed stormwater vaults with pit drains below may be feasible below some portions of the site. We are working concurrently on an infiltration testing and feasibility study for a proposed infiltration vault. Results of this study would be provided in a forthcoming report. 15.0 PAVEMENT RECOMMENDATIONS We anticipate that the project will include construction of new paved surfaces, including parking lots, access drives, and a bus loop. At this time, we do not anticipate that new paving will be completed on public streets. If new paving is planned on public streets, we should be allowed to make situation -specific paving recommendations. June 14, 2018; Revised February 20, 2019 ASSOCIATED EARTH SCIENCES, INC TG/ms-180111E001-4-Profe:ts1201802111KEIWP Page 20 Subsurface Exploration, Geologic Hazard, and Lake Grove Elementary School Preliminary Geotechnical Engineering Report Federal Way, Washington Preliminary Design Recommendations After the area to be paved is stripped, any organic soils are removed, and the soils are recompacted, the area should be proof -rolled with a loaded truck under the observation of AESI. Any soft, wet, organic, or yielding areas should be repaired as recommended during construction. If warranted, engineering stabilization fabric, such as Mirafi 500X (or equivalent), should be placed over the subgrade with the edges overlapped in accordance with the manufacturer's recommendations. Following subgrade preparation, clean, free -draining structural fill should be placed over the fabric and compacted to 95 percent of ASTM D-1557. Where fabric is exposed, spreading should be performed such that the dozer remains on the fill material and is not allowed to operate on uncovered fabric. When 12 inches of fill has been placed, the fabric should be proof -rolled with a loaded dump truck to pretension the fabric and identify soft spots in the fill. Upon completing the proof rolling operation, additional structural fill should be placed and compacted to attain desired grades. For driveways and private paving serving passenger cars, we recommend a paving section consisting of 3 inches of Class %-inch Hot Mix Asphalt (HMA) underlain by 4 inches of crushed surfacing base course (CSBC) that meets Washington State Department of Transportation (WSDOT) Standard Specification 9-03.9(3). Alternatively, asphalt treated base IA A. B) or Class %-inch HMA could be used for construction access followed by repair of any (..--r construction damage and final surfacing. If this alternative is used, we recommend a minimum of 2 inches of CSBC to serve as a working surface and a minimum of 3 inches of ATB. Final surfacing should consist of 2 inches of Class % inch HMA after any construction damage has been repaired. Paving for heavy traffic areas, such as bus lanes, fire lanes, and access for garbage and food service trucks should consist of 4 inches of Class %-inch HMA above 6 inches of crushed rock base. If an ATB section is desired, we recommend a 2-inch-thick working surface of crushed rock, topped by 4 inches of ATB and 3 inches of Class %-inch HMA. 15.1 Concrete Pavement Section A concrete pavement section for a heavy traffic load area, such as near trash enclosures, should consist of a 7-inch concrete slab. The concrete slab should be cast on 6 inches of CSBC. The crushed surfacing base course placed on firm and unyielding soil subgrade compacted to at least 95 percent of the soil's maximum dry density per ASTM D-1557. Concrete pavement should be cast using Portland cement concrete (PCC) with a minimum compressive strength of 4,000 pounds per square inch (psi) at 28 days. The concrete pavement should contain Grade 40 steel No. 4 bars placed at a maximum of 24 inches on center in two perpendicular directions. The bars should be placed within the upper one-half of the slab with at least 2 inches of concrete cover. We recommend crack control joints at locations that are aesthetically acceptable, and which achieve a joint spacing of 12 feet on center or closer. To June 14, 2018; Revised February 20, 2019 ASSOCIATED EARTH SCIENCES, INC. TG/ms-180212E001-0-ProjeMJ20180212JKEJWP Page 21 Subsurface Exploration, Geologic Hazard, and Lake Grove Elementary School Preliminary Geotechnicol Engineering Report Federal Way, Washington Preliminary Design Recommendations lessen fatigue and damage to the free edges of PCC paving slabs at any concrete/asphalt transitions, we recommend thickening of the edge of the slabs to 12 inches. We recommend that AESI inspect the soil and crushed rock surfacing subgrades prior to concrete placement. 16..0 PROJECT DESIGN AND CONSTRUCTION MONITORING Our report is preliminary since only a preliminary project concept was available at the time this report was prepared. We recommend that we be allowed to review project plans when they are completed and to revise the recommendations presented in this report as needed. We are also available to provide geotechnical engineering and monitoring services during construction. The integrity of the foundation system depends on proper site preparation and construction procedures. In addition, engineering decisions may have to be made in the field in the event that variations in subsurface conditions become apparent. Construction monitoring services are not part of our currently approved scope of work. June 14, 2018; Revised February 20, 2019 ASSOCIATED EARTH SCIENCES, INC TG/ms-180212E001-4-ProjecbJ201802121KEIM Page 22 Subsurface Exploration, Geologic Hazard, and Lake Grove Elementary School Preliminary Geotechnical Engineering Report Federal Way, Washington Preliminary Design Recommendations We have enjoyed working with you on this study and are confident these recommendations will aid in the successful completion of your project. If you should have any questions or require further assistance, please do not hesitate to call. Sincerely, ASSOCIATED EARTH SCIENCES, INC. Kirkland, Washington Tyner GIIsdorf, G.I.T., CESCL Senior Staff Geologist wasy�'�� y� Kurt D. Merriman, P.E. Senior Principal Engineer Attachments: Figure 1: Vicinity Map Figure 2: Site and Exploration Plan Figure 3: Current Aerial Lidar-Based Topography Appendix A: Exploration Logs Appendix B: Laboratory Results Appendix C: Sketch of Proposed Infiltration Facilities June 14, 2018; Revised February 20, 2019 ASSOCIATED EARTH SCIENCES, INC. TG/ms-180212E001-4-ProjectsJ20180212JKEJWP Page 23 � '�■� � � • icy .._,-.,, �� eggs A Z4(i r,P�►� n a ona ear - N G m i a s s o c i a t e c' {N earth sciences n c o i p o i a t e c 0 1000 2000 VICINITY MAP FEET LAKE GROVE ELEMENTARY SCHOOL aDATA SOURCES IREFERENCES: USGS:7.5'SERIESTOPOGRAPHIC MAPS, ESRVI-CUBEDINGS2013 NOTE: BLACK AND WHITE REPRODUCTION OF THIS COLOR FEDERAL WAY, WASHINGTON EKING CO: STREETS, PARCELS, CITY LIMITS 111E ORIGINAL MAY REDUCE ITS $ LOCATIONS AND DISTANCES SHOWN ARE APPROXIMATE EFFECTIVENESS AND LEAD TO INCORRECTINTERPREfAMON PROJ NO. 18O212EOO1 DATE: 5/18 FIGURE: 1 0 180212 Lake Gm ES 1180212ED01 F2 S-E P%, r , figi! W->-+ f ri . I R ; M") •0,4 YE• pi � { Ln yl z 1 m m m m mm m 8 o N m m lo �m D c m Z oo* m o Z to 3 m m N O 6Sp P m ? O O m CC m Ill - CD m c=- i c c 2g-0b 1O ,g G r m y m O o w� , mo o E.0 <Pi ' Z Z pz - D L] z z y '�^ o 0 m => rn o 2 mm o r z z C. � -• - N Z > z z m{ O Z 80 Z 2Fg T m c= - n m N g g om j t` m m m $ `n A� O O N Z >A , / _y<.�:�)y ;�°� G) / 2 G zz�m 2)\ §_/ )\2�$ 3//j0 = m m f / \ G z \ $ ® ® , • - §: /~: * \)f E 3 \ G m o |yam\\ z y o _ �\) \� 2 / APPENDIX A Exploration Logs F o Classifications of soils in this report are based on visual field and/or laboratory observations, which include density/consistency, moisture condition, grain size, and g plasticity estimates and should not be construed to imply field or laboratory testing unless presented herein. Visual -manual and/or laboratory classification t methods of ASTM D-2487 and D-2488 were used as an identification guide for the Unified Soil Classification System. ° °o° ° Well -graded gravel and Terms Describing Relative Density and Consistency m u_ L o° ° ° ° ° GW g ravel with sand, little to Dens 5PTt2'blowslfoot ° o no fines VeryLoose 0 to 4 Coarse- 1 y u. Loose 4 to 10 0 0 o 0 o 00 Poorly -graded gravel > o 'm Ln Grained Soils Medium Dense 10 to 30 Test Symbols y' 00000 GP and gravel with sand, Dense 30 to 50 G =Grain Size c 6 00000 little to no fines Very Dense >50 M= Moisture Content N d o z 0 c ° 0° o° t Consisted SPT �blowslfoot A = Atterberg Limits ° p z C , , Silty gravel and silty Very Soft 0 to 2 C =Chemical 0 cc c ° ° GM gravel with sand Fine- Soft 2 to 4 DD = Dry Density Grained Soils Medium Stiff 4 to 8 K = Permeability 2 20 W o Stiff 8 to 15 Clayey gravel and Very Stiff 15 to 30 a GC clayey gravel with sand Hard >30 o 'm Component Definitions LID M Descriptive Term Size Range and Sieve Number Well -graded sand and C ° gay sand with gravel, little Boulders Larger than 12' o LL i3 to no fines Cobbles 3° to 12' 12 U ' Gravel 3° to No. 4 (4.75 mm) . .... 4)e> In Poorly -graded sand Coarse Gravel 3° to 3/4° co 0 d yl SP and sand with gravel, Fine Gravel 3/4° to No. 4 (4.75 mm) co little to no fines Sand No. 4 (4.75 mm) to No. 200 (0.075 mm) 2 0 Z Coarse Sand No. 4 (4.75 mm) to No. 10 (2.00 mm) y Silty sand and Medium Sand No. 10 (2.00 mm) to No. 40 (0.425 mm) Lo a� ° y SM silty sand with Fine Sand No. 40 (0.425 mm) to No. 200 (0.075 mm) U c a • • .. gravel Sift and Clay Smaller than No. 200 (0.075 mm) LO �, N Clayey sand and (3) Estimated Percentage Moisture Content Ni SC clayey sand with gravel Component Percentage b Wei ht Dry - Absence of moisture, rn dusty, dry to the touch Trace <5 Slightly Moist -Perceptible Silt, sandy sift, gravelly sift, moisture CD CD Ln MIL sift with sand or gravel sift 5 to <12 Moist - Damp but no visible yT, Modifier 12 to <30 water Clay of low to medium o CD �, (sily, sandy, gravely) Very Moist - Water visible but draining a [3 plasticity; silty, sandy, or not free z c � •— CL gravelly Clay, lean clay Very modifier 30 to <50 Wet - Visible free water, usually (silly, sandy, gravely) from below water table wJ a = Organic clay or sift of low Symbols m 2 — — OL plasticity Blows/6' or 0 — Sampler portion of 6' Cement grout o � Type 1 surface seal Elastic sift, clayey sift, silt 2.0 OD o Sampler Type Bentonite MH with micaceous or Split -Spoon Desen�fon r•) seal 0 c diatomaceous fine sand or Sampler 3.01 OD Split -Spoon Sampler :: Filter pack with w o sift (SPT) := 3.25° OD Split -Spoon Ring Sampler c+� : blank cash g Clay of high plasticity, S = Bulk sample section d c Ln CH sand or ravel clay, fat Y gravelly Y 3.0° OD Thin -Wall Tube Sampler Screened cash g J clay with sand or gravel ' - (including Shelby tube) _ with liter p pack _ v rn -- Grab Sample :- End ca p c L7 Organic clay or sift of = Portion not recovered ftl Percentage by dry weight (4) Depth of ground water '` J �i��� f OH medium to high r%rif plasticity (Z) (SPT) Standard Penetration Test 1 ATD = At time of drilling (ASTM D-1586) Static water level (date) >, E Peat, muck and other 13> In General Accordance with o, y o,'o PT highly organic soils Standard Practice for Description f5) Combined USCS symbols used for = co O and Identification of Soils (ASTM D-2488) fines between 5% and 12% a s s o c i a t e d e a r t h s c i e n c e s EXPLORATION LOG KEY FIGURE Al i n c o r p o r a t e d a s s O cl a t e d Exploration Log Je a r t h s c i e n c e s Project Number Exploration Number Sheet Incoroora(ed 180212EO01 EB-1 1 1of1 Project Name Lake Grove EleMentary School Ground Surface Elevation (ft) —348 Location Federal Yft WA Datum HOLD 29 Driller/Equipment EDI I cli_ Rig Date Start/Finish 5/18118,5118118 Hammer Weight/Drop 140## 134" Hole Diameter (in) R_jnrhgs v N a V O C E O� m a` CO 3 Blows/Foot .y-• fd H o T� C7 c m r DESCRIPTION ° 10 20 30 40 q•.: a Asphalt - 3 inches Crushed Aggrpgate - 6 inches Fill 5 Slightly mast, dark brown to gray, silty, fine to medium SAND, some gravel; 3 S-1 poor recovery, gravel in tip of sampler (SM). 1 A3 2 — — — — -- — — — vashanLodgement— - ----- - 10 Slightly mast, gray with minor mottling to red, silty, fine to medium SAND, 12 S-2 • •' • some gravel; unsorted; broken gravel present, blow counts may be overstated 29 A k62 (SM)• 33 Vashon Lodgement Till / Vashon Advance Outwash Transitional - 15 Slightly mast, gray, fine to coarse SAND, some gravel, some silt; poor recovery; 16 S-3 ': ' ' • broken gravel in spoon, blowcounts may be overstated (SP-SM). 30 69 39 - 20 Slightly most, grayish brown, medium to coarse SAND, some gravel, some silt 15 S-4 =- (SP-SM). 17 A44 27 Bottom of exploration boring at 21.5 feet No groundwater encountered. - 25 - 30 - 35 Sampler Type (ST): m 2" OD Split Spoon Sampler (SPT) No Recovery M - Moisture Logged by, BY m 3" OD Split Spoon Sampler (D & M) Ring Sample Q Water Level () Approved by: JHS ® Grab Sample ® Shelby Tube Sample 1 Water Level at time of drilling (ATD) associated Exploration Lo earth sciences Project Number Exploration Number Sheet ;ncorporated 180212EO01 EB-2 1of1 Project Name Lake Grove Elementary School Ground Surface Elevation (ft) n351 Location Federal Datum N) 9G Driller/Equipment a TIUCk I _ Date Start/Finish 5/1 AM A.S/1 AM R Hammer Weight/Drop 140# / 30" Hole Diameter (in) -8jnrhes g c O m m 7 Blows/Foot � f/1 t a S E Q `T 5, � 6 ko ° T w DESCRIPTION U r m 10 20 30 40 4., . Asphalt - 3 inches Crushed AgAreWe - 6 inches Fill 5 ' Slightly moist, gray, silty, fine to coarse SAND, some gravel; broken gravel in 11 A28 S-1 • spoor, blowoounts may be overstated (SM). 12 16 10 5-2 : Slimy moist, brown and gray, silty, fine to coarse sand, some gravel; unsorted; in blowcounts maybe Overstated (5M}. i2 24 57 - br en evel present sampler, 33 15 S-3 ;: Sli htly moist to moist, gray with minor mottiing to red, silty, Tine to coarse SAND, some gravel; broken gravel present in sampler, blowcounis may be 58 501 - overstated (SM). - : — — — — — — — — — ----------------------- Vashon Advance Outwash 20 Slightly moist, tan, fine to medium SAND, trace silt, trace gravel; minor bedding 14 ' (1/4 Inches thick) of very silty, fine sand (SP). 16 41 25 Bottom of eV oration boring at 21.5 feet No groundwater encountered. 25 30 35 Sampler Type (ST): m 2" OD Split Spoon Sampler (SPT) ❑ No Recovery M - Moisture Logged by, BY m T OD Split Spoon Sampler (D & M) Ring Sample Q Water Level() Approved by: JHS 5 Grab Sample © Shelby Tube Sample 1 Water Level at time of drilling (ATD) associated Ex lorationLo e a r t h s c i e n c e s Project Number Booration Number Sheet incorporated 180212EO01 EB-3 1of2 Project Name Lake Grove Elementary School Ground Surface Elevation (ft) —347 Location _F_ederal Way. WA Datum NGVD 29 Driller/Equipment EDI/Truck Rig DateStart/Finish _ _5l1R118,5118118 Hammer Weight/Drop 140# 13�" Hole Diameter (in) _R inrhei v M a Q� I m Blows/Foot N L a 5 E T >, m A J ki � t-yy 0 f Cn c� Co a o m iD L DESCRIPTION 9 10 20 30 40 _ O Sod - 4 inches Topsail - 8 inches Brown silty,fine to medium SAND, trace to some gravel (SM), Fill 5 S-1 Slightly moist, brawn mottling to orange becoming more gray with depth, silty, 2 fine to medium SAND, same gravel (SM). 3 ■ 3 Vashon Lodgement Till / Vashon Advance Outwash Transitional 10 Slightly moist, brown to g y gray, Bitty, fine to coarse SAND, some gravel; broken 22 S`2 gravel, blowcounts may be overstated: poor recovery; till -like (SM). 29 58 29 o • 15 ° • Slightly moist, gray, very sandy, GRAVEL, some silt; broken gravel in sampler, i2 S 3 ❑ blowcounts maybe overstated (GP -GM). 19 ° 19 20 Slightly mast, gray to tan, very gravelly, silty, fine to coarse SAND; massive; 25 till -like (SM). 35 67 32 25 Moist, gray transitioning to tan, silty, fine to coarse SAND, some gravel; 23 S-5 Increase In fines with depth; till -like (SM). 24 A L55 31 30 S-6 ' Mast, gray with some tan, silty, fine to medium SAND, some gravel; massive; 15 • • till -like (SM). 33 A L72 39 35 S-7 As above (SM). 24 A 35 rn 42 Sampler Type (ST): m 2" OD Split Spoon Sampler (SPT) ❑ No Recovery M - Moisture Logged by: By [D 3" OD Split Spoon Sampler (D 8r M) 1] Ring Sample Q Water Level() Approved by: JHS IN Grab Sample ® Shelby Tube Sample 1 Water Level at time of drilling (ATD) Exploration L 8a8 e a r t h sciences Project Number Exploration Number Sheet incorporated 180212EO01 EB-3 2of Project Name Lake Grove Elementary School Ground Surface Elevation (ft) —347 Location Datum NGVn 94 Driller/Equipment EDI / ck in Date Start/Finish 5/1 f3/18,5/18/i s Hammer Weight/Drop 14 " Hole Diameter (in) R inrheS - L a a �° Blows/Foot H 0 T (J rn o m m L DESCRIPTION " 10 20 30 40 ° A. As above with coarse sand (Se). 21 S-8 5 51 — — — — — ---------------- Vashon Advance Outwash 45 Moist, gray, fine to medium SAND, trace coarse sand, some gravel, some silt 19 S-9 ' : (SP-SM). gg 71 3 50 ' - Moist, gray, fine to medium SAND, some gravel, trace silt, trace coarse gravel; 18 S-10 _ : : • contains minor stratifications (1/8 inch thick) (SP). 20 41 21 55 Slightly moist, gray, fine to coarse SAN0, trace silt; coarser with depth; contains 19 S-11 minor stratifications (up to 118 inch thick) (SP). fi0 38 60 Slightly moist, gray, fine to medium SAND, trace silt (SP). 14 S-12 . • : ' • 27 64 37 Bottom: of explanation baring at 61.5 feet No grotmdwster encountered. 65 70 75 Sampler Type (ST): M 2" OD Split Spoon Sampler (SPT) No Recovery M - Moisture Logged by, By m 3" OD Split Spoon Sampler (D & M) U Ring Sample Q Water Level() Approved bY' JHS ® Grab Sample 0 Shelby Tube Sample 1 Water Level at time of drilling (ATD) Ex IorationLo eassociated e a r t h s c i e n c e s Project Number Booration Number Sheet incorporated 180212EO01 EB-4 1Of1 Project Name Lake Groye Elementary School Ground Surface Elevation (ft) -349 Location Federal Way, WA Datum NGVD 29 Driller/Equipment EDII ! Twlrk Rig Date Start/Finish 5/1 R/1 R,5/1 R/1 R Hammer Weight/Drop 140# / 30" Hole Diameter (in) Rin�hpc V t M U— '� $ 8 $ a 3 BIOWS/FOOt y H �' m o T DESCRIPTION o 3 m ° 10 20 30 40 Sod - 4 inches Topsoil - 8 inches Fill Slightly moist, brown to reddish brown, silty, fine to medium SAND, some gravel SilAj_------ —— — — — — — — — — Vashon Lodgement Till 5 Slightly moist, gray mottling to red present, silty, fine to medium SAND, some 12 S-1 gravel; unsorted (5M). 18 40 22 10 Slightly moist, gray, silty, fine to medium SAND, some gravel; unsorted; 14 S-2 '• • •: sandy -till (SM). 21 �4 25 ------------------------------- Vashon Advance Outwash - 15 Driller notes beingon of a rock; r �P P� ��Y• S-3 .::. gray, silty, fine to coarse SAND, some gravel; zones of till -like material 5D/ " (Satins). - 20 Moist, gray, very gravelly, fine to predominantly medium SAND, some silt; layer 18 S-4 : (1 Inch thick) of oxidized reddish brown sit: broken gravel in spoon, blowcounts 30 71 m be overstated SP-SM . 41 Bottom of e)loration boring at 21.5 feet No groundwater encountered. - 25 - 30 - 35 Sampler Type (ST): m 2" OD Split Spoon Sampler (SPT) No Recovery M - Moisture Logged by: By m 3" OD Split Spoon Sampler (D $ M) U Ring Sample Water Level() Approved by, JHS 5 Grab Sample ® Shelby Tube Sample 1 Water Level at time of drilling (ATD) a ssoc! ate d Geolo-gic & Moni, earth sciences Project Number incorporated 180212EO01 Project Name Lake Grove Elementary School Elevation (Top of Well Casing) Water Level Elevation DrillinglEquipment EDI / B61 Truck Rig Hammer Weight/Drop 140# / 30" E A WELL CONSTRUCTION S 3: T Well Construction EB-5W 1 1 of 3 Location Federal Way. WA Surface Elevation (ft) —347 Date Start/Finish 7127118 Z07/1 A Hole Diameter (in) 8 infhes DESCRIPTION Flush mount monument with N— As Liall. - 2.5 Inches locking well cap Base Coarse I Crushed Rock - -4 inches Concrete 0 to 1 foot Fill Drill cuttings consist of moist, brown, fine to medium SAND, some silt, some gravel (SP-SM). 5 4 Moist, light brown to brown, fine to medium SAND, some silt, some 8 gravel (SP-SM). 35 VashonLodgement- Yr, i — — — — — — — -- 10 11 Moist, light brownish ray with minor oddation, fine to medium SAND, 27 some silt, some g=, somewhat unsorted (SP-SM). 32 15 Bentonite chips and grout 1 to 27 Moist, light brownish gray, silty, fine to medium SAND, some gravel; unsorted (SM). 86 feet --- — — — — — — — — — — — — — — — — — — — — — — — — — — — — Vashon Lodgement Till I Vashon Advance outwash Transitional — 20 2-inch I.D. PVC casing with .1 21 Moist, light brownish gray, fine to medium SAND, some silt, trace gravel; threaded connections and 26 massive (SP-SM). 0-rings 0 to 90 feet 32 25 Mast st to very moist, light brownish gray, silty, fine to medium SAND, 50 trace gravel: somewhat unsorted to massive (SM), 30 40 Moist, gray to light brownish gray, silty, fine to medium SAND, some gravel somewhat unsorted (SM). — — — — — — — — — —Vashon Advance a&ia—sh — — — — — — — — — — 35 10 Moist to very moist, light brownish gray, fine to medium SAND, some silt, 30 some gravel; massive; i1cw raxwery, broken rock in sampler (SP-SM). 46 Sampler Type (ST): 2' OD Split Spoon Sampler (SPT) a No Recovery M Moisture Logged by: TG X OD Split Spoon Sampler (D & M) Ring Sample V- Water Level Approved by: JHS Grab Sample Shelby Tube Sample 1 Water Level at time of drilling (ATD) a s s o c i a t e d Geologic $ MonitoringWell Construction Log e a r t h s c i e n c e s Project Number Well Number Sheet °' ' Cl ° ° r a ' ° 180212EO01 EB-5W 2 of 3 Project Name Lake Grove Elementary School Location Federal Way, WA Elevation (Top of Well Casing) Surface Elevation (it) ^-347 Water Level Elevation Date Start/Finish 7/27/1 R 7/27/1 A Drilling/Equipment EDI I B61 Truck Rin Hole Diameter (in) 8 inches Hammer Weight/Drop 14 " L CD m N L m E - c W WELL CONSTRUCTION S m `� DESCRIPTION 15 Very moist, gray to Ilght brownish gray, gravelly, fine to medium SAND, 35 some silt; massive (SP-SM). 27 45 14 Mast to very moist, gray to light brownish gray, gravelly, fine to medium 37 SAND, trace slit; massive (SP). 37 50 13 j Moist, light brown to light brownish gray, gravelly, fine to medium SAND, 22 some silt; massive (SP-SM). 18 55 Bentonite chi and rout 1 to chips g 19 Moist, light brownish gray, fine SAND, some silt, trace gravel; massive 66 feet 25 = -. (SP-SM). 41 60 2-inch I.D. PVC casin with g 13 Moist, light brownish gray, very gravelly, fine to medium SAND, some silt; threaded connections and 26 faint stratification of fine and medium sand (SP-SM). 0-rings 0 to 90 feet 26 65 7 Moist, light brown to light brownish gray, fine SAND, some silt, trace 13 gravel; faint stratification (SP-SM). 27 70 15 Moist, light brownish gray, gravelly, fine to medium SAND, some silt; 40 - massive; broken rock in sampler (SP-SM). 42 75 7 Moist, light brownish gray, fine to coarse SAND, some gravel, trace silt; 17 faint stratification of coarser grains (SP). 18 Sampler Type (ST): m 2" OD Split Spoon Sampler (SPT) No Recovery M - Moisture Logged by: TG m 3" OD Split Spoon Sampler (D $ M) Ring Sample �4 Water Level () Approved by: JHS 8 Grab Sample Shelby Tube Sample V- Water Level at time of drilling (ATD) 0 a s s o c i a t e d e art h s c i e n c e s incorporated Geola is & Monitoring Well Construction La Proiect Number Weli Number Shad 180212EO01 EB-5W 3of3 Project Name Lake Grove- I gmentary School Location Federal Way, WA Elevation (Top of Well Casing) Surface Elevation (ft) —347 Water Level Elevation Date StartlFinish Drilling/Equipment E BO Truck-Ria Hole Diameter (in) lil Hammer Weight/Drop 144 # / 30" t N N y o U — d� E aa) 0 WELL CONSTRUCTION io m m w DESCRIPTION 11 Slightly moist, light brown to light brownish gray, gravelly, silty, fine to 25 = -• medium SAND; faint stratification (SM). 31 85 7 Slightly mast to moist, gray to light grayish brown, gravelly, fine to 30 medium SAND, trace silt; massive (SP). Colorado silica sand 86 to 101 33 feet 90 2-inch I.D. PVC well screen 7 Slightly moist to moist, light gray to light brownish gray, gravelly, silty, fine with threaded connections and 32 = SAND; massive (SP). 0-rings 0.010-inch slot width 37 90 to 100 feet 95 7 As above. 24 37 00 Glued on end cap 7 Moist, light gray to light grayish brown, fine to medium SAND, trace 32 gravel, trace sift; faint stratrficaton of coarser grains (SP). 40 Baling terminated at 101.5 feet. Well completed at 101 feet on 7/27/18. Well tag # BKH-544 No groundwater encountered. 05 10 m 0 15 0 0 z z z 0 m a [7 N o Sampler Type (ST): m m 2" OD Split Spoon Sampler (SPT) 0 No Recovery M - Moisture Logged by: TG m 3" OD Split Spoon Sampler (D & M) Ring Sample Water Level () Approved by: JHS ;w Z ® Grab Sample Shelby Tube Sample 1 Water Level at time of drilling (ATD) Exploration Lo eassociated e a r t h s c i e n c e s Project Number Exploration Number Sheet incorporated 180212EO01 EB-6 1of1 Project Name Lake Groy—e El�rnentary Schad Ground Surface Elevation (ft) -350 Location Feday. WA Datum NGVD 29 Driller/Equipment EDI 61 TrcukRia Date Start/Finish 7/30/1 R,7/30/1 A Hammer Weight/Drop 4 0" Hole Diameter (in) R inrj� iR t U1 o V r- IS m 'mi J u, Blows/Foot y mE O m a '� o m 3 m t o T DESCRIPTION 3 ° 10 20 30 40 Asphalt - 2.5 inches Fill Cuttings are mast, brown, gravelly, silty, fine SAND (SM). 5 Slightly moist, brown and gray, very gravelly, silty, fine to medium SAND; 18 S-1 unsorted: broken gravel in spoon (SM). 22 �4 Vashon Lodgement Till 24 Drill grinding at 6 feet. - 10 Moist, brown and gray, very gravelly, silty, fine to medium SAND; unsorted; 9 S-2 '• broken gravel in spoon; gravel mostly rounded (SM). 19 39 20 - 15 Moist with wet seams, brown and gray, very gravelly, silty, medium to coarse 20 S 3 SAND; unsorted (SM). 40 k8o 40 - 20 1 S 4 -• • •- Poor In ti : moist, silty, ravel) medium to coarse SAND; unsorted recovery. P tY gravelly, 50! " Bottom of adoration boring at 20.5 feet No groundwater encountered. - 25 - 30 - 35 Sampler Type (ST): m 2" OD Split Spoon Sampler (SPT) No Recovery M - Moisture Logged bY: NS 91 3" OD Split Spoon Sampler (D & M) Ring Sample Q Water Level () APProved bY: JHS IN Grab Sample © Shelby Tube Sample 1 Water Level at time of drilling (ATD) a s s o o i a t e d Exploration Lo e a r t h sciences Project Number E)loration Number Sheet Incorporated 180212EO01 EB-7 1of1 Project Name Lake Grove Elementary s hoot Ground Surface Elevation (ft) -350 Location Federal Way WA Datum NGVr) 99 Driller/Equipment EDI 1061 Trcuk Rh Date Start/Finish 7/3f1/1 R,7/30/1 R Hammer Weight/Drop 140# 1300 Hole Diameter (in) t a .a� O it 7 3 Blows/Foot n S E t T `� (Ito DESCRIPTION o 03 m m 10 20 30 40 O Asphalt - 3 inches Fill Mast, dark brown, very silty, very fine SAND, some gravel (SM). S-1 ---------- Vachon ---------- Lodgement Till 5 Dry to slightly mast, light brown and gray, gravelly, silty, fine to medium SAND; 11 7 5-2 - unsorted (SM). 17 20 - 10 S-3 As above. 0 ;r Vachon Lodgementiill 1 Vachon Advance Outwash Transitional - 15 S-4 : Poor recovery. Upper 3 inches: moist, gray, fine to medium SAND, some silt, 26 a8 5D trace to some grave! (SP-SM). Lower 3 inches: Stightiy moist, gray and brown, silty, gravelly, fine to medium SAND (SM). - 20 S-5 . Slightly dry to moist, gray,brown, red, orange, sandy, silty, coarse GRAVEL; 28 , 501 unsorted: slightly sti GM . Bottom of adoration boring at 21 feet No groundwater encountered. - 25 - 30 - 35 Sampler Type (ST): m 2" OD Split Spoon Sampler (SPT) ❑ No Recovery M - Moisture Logged by: NS ❑ 3" OD Split Spoon Sampler (D & M) Ring Sample -V Water Level() Approved by: JHS 99 Grab Sample 0 Shelby Tube Sample 1 Water Level at time of drilling (ATD) associated Exploration Lo e a r t h s c i e n c e s Project Number Booration Number Sheet incorporated 180212EO01 EB-8 1Of1 Project Name-Lake_CroVe_ Elementary Schaal„ Ground Surface Elevation (ft) --347 Location Federal Way, WA Datum NGVD 99 Driller/Equipment EDI / B51 Trcuk Rig Date Start/Finish 7!30/18,7130/19 Hammer Weight/Drop 140# 130" Hole Diameter (in) 8 inrheS t 8 C E a J 3 Blows/Foot H a CD S E T ) � _Q] L_ DESCRIPTION 0 m ° 10 20 30 40 Asphalt - 2.5 inches Fill Moist to very moist, dark grayish brown, very silty, gravelly, well graded SAND S-1 : (SM). 5 S-2 Upper 1 inch: moist, dark brown and orange, gravelly, silty, SAND; abundant a anics 5M . 26 A4 81 Vashon Lodgement Till 25 Moist, dive, silty to very silty, gravelly, fine SAND; unsorted; lightly cemented (SM). - 10 Slightly moist to moist, gray and brown, very gravelly, silty, fine to medium 26 S-3 SAND; unsorted (SM). 26 A kro 24 - 15 Slightly moist, brownish gray, gravelly, fine SAND, some silt (SP-SM). 16 18 A43 25 Vashon Lodgement Till / Vashon Advance Outwash Transitional - 20 Moist, dive, black and orange, gravelly coarse SAND, some silt; nonstratified; 03 S-5 sticky (SP-SM). 37 67 30 Bottom of e)lorabon boring at 21.5 feet No groundwater encountered. - 25 - 30 - 35 Sampler Type (ST): m 2" OD Split Spoon Sampler (SPT) No Recovery M - Moisture Logged by: NS m Y OD Split Spoon Sampler (D & M) Ring Sample Water Level() Approved by: JHS ® Grab Sample © Shelby Tube Sample 1 Water Level at time of drilling (ATD) W 0 m a s o c i a t e d L,7C lorati on L❑ eas earth sciences Project Number Booration Number Sheet i n c o r p o r a I e d 180212EO01 EB-9 1Of1 Project Name Lake Grove Ele[DentarySchool Ground Surface Elevation (ft) ,;345 Location Fedgral Datum NGVn 99 Driller/Equipment ED I / 1351 Ticluk Rio Date Start/Finish 713011 A1713011 R Hammer Weight/Drop 140# / 3 " Hole Diameter (in) $ inrhPc to t a J 3 Blows/Foot m N t T DESCRIPTION 0 " m 10 20 30 40 ° Topsoil / Fill S-1 medium stiff, slightly moist, brown, sandy, SILT, some gravel; scattered roots (ML). 5 .� U 3 inches: Wet dark brown, ravel) sand , SILT• occasional roots ML . 6 S-2 Vashon Lodgement Till 3 Lower 3 inches: Wet, gray with minor iron opde band, gravelly, silty, fine SAND; 27 • unsorted (SM). 10 Slightly moist, gray and brown, very gravelly, silty, fine SAND; unsorted; broken 17 S-3 = gravel in spoon (SM). 26 26 Grinding at 13 feet, suspected cobble/boulder. 15 Moist, gray and brown, very gravelly, silty, fine SAND; unsorted (SM). 21 S-4 24 o • 20 g5 0 ° > Poor recovery. Moist, tan, orange, gray and brown, coarse sandy, GRAVEL, 2` ° some silt; large broken gravel ins (GP -GM). Botlorn of adoration boring at 21 feet Groundwater encountered at 5 feet 25 30 35 Sampler Type (ST): m 2" OD Split Spoon Sampler (SPT) m X OD Split Spoon Sampler (D & M) ® Grab Sample No Recovery M - Moisture U Ring Sample Q. Water Level() 0 Shelby Tube Sample 1 Water Level at time of drilling (ATD) Logged by: NS Approved bY: JHS associated Exploration Lo e a r t h s c i e n c e s Project Number Exploration Number Sheet i n co r po ra ied 180212EO01 EB-10 1of1 Project Name eke GrM_Elen' Elementary School Ground Surface Elevation (fit) -352 Location Federal Way. WA _ Datum -NGv ? 2q Driller/Equipment Date Start/Finish 7/30/18,7/30/18 Hammer Weight/Drop 1 Hole Diameter (in) R inches a m �' Blows/Foot 13 ` S E T >, C7 t� p m m i o co DESCRIPTION " ° 10 20 30 40 Fill S-1 Cuttings are dry, brown, sandy, gravelly, SILT, occasional cobbles; occasional roots (ML). ----------------------- ---- Vashon Lodgernerri Till / Vashon Advance Outwash 5 Slightly moist to moist, gray and brown, 9 Y 9 Y very gravelly, silty, fine SAND; 25 S-2 .:: unsorted; broken gravel in spoon (SM). 18 A43 25 10 S-3 :• As above with seam (1 inch thick) of iron opde staining. 36 " 34 501 Difficult drilling, suspected boulder. 15 S-4 •'' Very moist, tan, brown, grayand orange, very gravelly, fine to medium SAND, some silt to silty; unsorted (SP-SM). 29 A L62 32 30 Vashon Advance Outwash 20 Moist, grayish brown, fine to medium SAND, some gravel, trace silt; very19 --,weakly stratified; grades to some silt near tip 5P . Bottom of exploraden boring at 21 feet No groundwater encnuntered. 25 30 35 Sampler Type (ST): m 2" OD Split Spoon Sampler (SPT) No Recovery M - Moisture Logged by: NS m 3" OD Split Spoon Sampler (D $ M) Ring Sample Water Level() Approved by: JHS 5 Grab Sample © Shelby Tube Sample 1 Water Level at time of drilling (ATD) associated Exploration Lo e a r t h s c i e n c e s Project Number Booration Number Sheet incorporated 180212EO01 EB-11 1of1 Project Name Lake -Grove ElpmenWary School Ground Surface Elevation (ft) -377 Location Feder Datum Driller/Equipment EDI Iuk RiaDate Start/Finish 7/,,i()/1 A_7/3n/1 A Hammer Weight/Drop 4 " Hole Diameter (in) t a� C m a N J 3 Blows/Foot a) T to C7 rn o " cc °° 3 r ° DESCRIPTION 10 20 30 40 Grass 1 Topsoil - R inches S-1 '�,• J, Fill Moist, brown, silty, fine SAND, some gravel; occasional roots (SM). TFF 5 S-2 .� Upper 3 inches: moist, orange, fine sandy, SILT, some gravel; organic particles 1 ML. Vashon Lodgement Till Lower 3 inches: moist, olive, very silty, gravelly, fine SAND; unsorted (SM). Difficult drilling, suspected cobble or boulder. 10 Upper 6 inches: very mast, gray, silty, gravelly, fine SAND; unsorted (SM). 5 S 3 Lower 6 inches: slightly moist, dive, very silty with a seam (2 Inches thick) of 14 iron cudde, very silty, gravelly. fine SAND; unsorted (SM). 1"< 15 Mast, dive with faint iron obde, very silty, gravelly, fine SAND; unsorted; lightly S-4 : cemented SM . Bottom of wooration boring at 16 feet No groundwater encountered. 20 25 30 35 Sampler Type (ST): m 2" OD Split Spoon Sampler (SPT) m 3" OD Split Spoon Sampler (D & M) ® Grab Sample ❑ No Recovery M - Moisture U Ring Sample - Water Level() 0 Shelby Tube Sample 1 Water Level at time of drilling (ATD) Logged by: NS Approved by: JHS APPENDIX B Laboratory Results w W Z LL H Z W w W a 10C 9C 8C 7C 6C 5C 4C 3C 2C 1C C Particle Size Distribution Report c a o 0 MINOR HIM IN, II MEN M I 1 111111011 IN 1 � 1IM11111 Iuu IV % Gravel %+3" Coarse��40.2 0.0 6.6 GRAIN SIZE -MM. % Sand % Fines Coarse Medium Fine Silt Clay 11.1 24.0 1 7.8 10.3 TEST RESULTS Opening Percent Spec." Pass? Size Finer (Percent) (X=Fail) 1.5 100.0 1 100.0 .75 93.4 .375 70.5 #4 53.2 #8 43.9 #10 42.1 #20 31.4 #40 18.1 #60 12.4 #100 10.7 #200 10.3 #270 10.3 Matqdal Description very sandy GRAVEL, some silt Atte raLirrtits �ASTM D 4318] PL= NP LL= NV PI= Classification USCS (D 2487)= GP -GM AASHTO (M 145)= A-1-a Coefficients D90= 17.0567 D85= 14.6580 D60= 6.5484 D50= 3.9011 D30= 0.7873 D1 5= 0.3370 D10= Cu= Cc= Remarks Collected by: BCY Date Received: 05/31/2018 Date Tested: 06/04/2018 Tested By: BN Checked By: AWR Title: (no specification provided) n• Onsite Number.'EB-3 _Depth: ISM as s o c i a t e d Client: Federal Way School District e a r t h s c i e n c e S Project: Lake Grove Elementary School i n c o r p o r a t e d Pro ed Ng: k$M12 EOOl Date Sampled: 05/18/2018 x w Z LL Z W Ix W a. 10( 9( 8( A 6C 5C 4C 3C 2C 1C 0 Particle Size Distribution Report C d i milli 11111111111011 Ism 10 iiiiiiin�Milill liiiinmiiii 11m1II1N11 11 lnmiiiiiii m mill ME 11111 Ism,, liiii Milli IN ilimi� lismillillim 11111IM11111111M lmiiiiiiiomiiiiiiimmilum IVV IV } V. 1 U.UI U.wl UKAIN SILL - MM. % +3" % Gravel % Sand % Fines Coarse Fine Coarse Medium Fine Gilt Clay 0.0 6.0 29.7 13.4 24.5 12.8 13.6 TEST RESULTS Opening Percent f Spec! Pass? Size Finer II (Percent) (X=Fail) 1.5 100.0 1 97.1 .75 94.0 .375 78.8 #4 64.3 #8 53.2 #10 50.9 #20 39.7 #40 26.4 #60 17.4 #100 14.8 #200 13.6 #270 13.4 Material Descrlo —Qn very gravelly, silty SAND Atterberg Limits IASTM D 4318) PL= NP LL= W PI= Classification USCS (D 2487)= SM AASHTO (M 145)= A-1-b Coefficients D90= 15.2788 DS5= 12.2723 D60= 3.6986 D50= 1.8601 D30= 0.5068 D75= 0.1608 D70= Cu= Cc= Remarks Collected by: BCY Date Received: 05/31/2018 Date Tested: 06/04/2018 Tested By: BN Checked By: AWR Title: (no specinCation provided) li: Onsite Number: EB-3 Depth: 20' a s s o c i a t e d) Client: Federal Way School District e a r t h s c i e n c e s Project: Lake Grove Elementary School i n c o r p o rated P[olect No: 180212 E001 Date Sampled: 05/18/2018 Particle Size Distribution Report C C O O O C C a O G [O[D� �Oq f0p 100 4 I I I I I I 1 I I I I I I V I 1 i I I I 1 I 1 I 90 I I i jI I 1 1 i N 1 I 1 V 1 I 1 I I 1 V I ! 1 1 B0 I i I i t I I I I i I 1 I I f 1 I I 1 i I 1 I I I I 1 4 I I I 1 I 1 70 I 1 I I 1 nsu w 1 I 1 1 I I 1 1 1 1 r 1 r I 1 I I I Z 60LL 1 1 I I I I I 1 I I 1 I I I I 1 f i i I 1 1 Z 50 I I I I I I I 1 I 1 I 1 1 1 U I I I I 1 I l 1 I I I I W 40 I 1 I 1 ! 1 I I I r ! a I I 1 I I I I I I I I I I I I 30 I I I I I 1 I I f 20 ! 1 I I 1 I H:. I I l I I 10 i I I I I I 4 r I I I I 1 4 I 1 i I I 1 1 O 7 ] I I 1 1 1 ! I I 1 1 ! ! ! I I 1 I I I 100 10 1 0.1 0.01 0.001 GRAIN SIZE - m. % Gravel % Sand % Fines +3" Coarse Medium Fine 9.9 29.3 13.9 Coarse Fine Silt Clay 0.0 8.4 28.8 9.7 TEST RESULTS Material D rl Ion Opening Percent Spec.* Pass? very gravelly SAND, some silt Size Finer (Percent) (X=Fail) 1.5 100.0 1 94.6 A#ierberg Llmits (ASTM D 4318 .75 91.6 PL= NP LLa NV Pl= .375 73.5 ClassiticatA n #4 62. 8 62. USCS (D 2487)= SP-SM AASHTO (M 145)= A-1-b #8 #10 52.9 Coefficients #20 42.7 D90= 17.4764 D&5= 14.2921 D60= 3.6319 #40 23.6 D50= 1.4798 D30= 0.5362 D15= 0.2586 #60 14.6 D10= 0.0925 Ce= 39.29 Cc= 0.86 #100 113 Remarks #200 9.7 Collected by: BCY 9.4 Date Received: 05/31/2018 Date Tested: 06/04/2018 Tested By: BN Checked By: AWR Title: (no specification provided) Location: Onsite Date Sampled: 05/18/2018 Sample Number: EB-4-Depth.• 20' a s s o c i a t e d e a r t h s c i e n c e s Client: Federal Way School District Project: Lake Grove Elementary School i n c o r p o r a t e d ProjectNo: t 80212 ADD 1 Fl ure 101 9( el 7( z 6( Z 5( W It 4( W a. 3( 2( 1( ( Particle Size Distribution Report C C C T C O Y i7 O t00 O O N x x iiiiiiiii 11111111liqu, iiiiiiim IN I INN INEIIIIIINE�illiiMillilil§E iiiinmiiiiii Ilium liiiimiiiiiiilm 111111 NEIIIIIIIIN NORM In limm 1 11 ME ll11JI1111 I goillillismilill 11 % +3" 0.0 % Gravel Coarse Fine Coarse 7.4 22.0 10.2 Opening Size TEST RESULTS Percent Spec.` Pass? Finer (Percent) (X=Fail) 1 100.0 .75 92.6 375 82.3 #4 70.6 #8 62.3 #10 60.4 #20 47.3 #40 28.3 #60 16.5 #100 12.6 #200 11.8 #270 11.7 1 IN JILC - 111111. % Sand IAdil" Fine 32.1 16.5 V.7 V.U7 U.UU1 % Fines Slit 11.8 Mat,QrjaLQ%kgdipf resin Gravelly SAND Some Silt Atterberg Limits (ASTM D 431$j PL= np LL= nv PI= Classification USCS (D 2487)= SP-SM AASHTO (M 145)= A-1-b Coefficients Dgp= 16.7011 DBS= 11.7083 Dgp= 1.9271 D50= 0.9661 D30= 0.4519 DI 5= 0.2223 DID= CU= Cc= Remarks Date Received: 8-7-18 Date Tested: 8-7-18 Tested By: MS Checked By: TR Title: kno specuicanon proviaea) Location: Onsite Date Sampled: 7-27-18 Sample HUn1kQB- B--5% Depth: 40' a s s o c i a t e dl Client: Federal Way School District e a r t h s c i e n c e s Project: Lake Grove Elementary School i n c o r p o r a t e dil __ __ __ w w z LL H Z W U W IL a Particle Size Distribution Report U rS111tV r7iCC - lilli 1. % Gravel % Sand %Fines °�0+3.. Coarse Fine Coarse Medlum�29.7 Fine _ Silt Clay 0.0 4.3 13.8 10.0 35.2 7.0 TEST RESULTS Opening Percent Spec." Pass? Size Finer (Percent) ()C=Fail) 1 100.0 75 95.7 .375 90.9 #4 81.9 #8 73.7 #10 71.9 #20 64.4 #40 36.7 #60 13.5 #100 8.1 #200 7.0 #270 6.9 (no specification provided) Materi ail . Des criptiJl Gravelly SAND Some Silt Atte r Limi (ASTNi_R 4318) PL= np LL= nv PI= Classification USCS (D 2487)= SP-SM AASHTO (M 145)= A-1-b Coefficients 090= 8.6497 D85= 5.9102 060= 0.7263 D50= 0.5612 Dg5= 0.3723 D1V 0.2633 D10= 0.2095 Cu= 3.47 Cc= 0.91 Remarks Date Received: 8-7-18 Date Tested: 8-7-18 Tested By: MS Checked By: TR Title: a s s o c i a t e d Client: Federal Way School District e a r t h s c i e n c e s Project: Lake Grove Elementary School incorporate d Proiect No: 18-0-MEO-01 Date Sampled: 7-27-18 w W Z Z w U Ir liJ IL 101 91 8( 7( 6( 5( 4( 3( A 10 Particle Size Distribution Report C C C� c C C pppp O O O O O C � C 1■ I Y■■■ In Ism IN III inmiiiiiiilm 0 PHONE I III I lmmiiiiiiilm INN l�illimmillillimm INN INNIIIIIIINE IN ■ 11 IN 1011 IN Ell on I ililimillillimm HIM 11 In �illillimillilliamil % +3„ % Gravel Coarse Fine 0.0 3.0 27.4 I V.7 GRAIN SIZE - mm. % Sand _ Coarse Medium Finn 9.5 30.4 19.4 TEST RESULTS Opening Percent Spec.* Pass? Size Finer (Percent) (X=Fail) 1 100.0 .75 97.0 .375 82.1 #4 69.6 #8 61.8 #10 60.1 #20 47.8 #40 29.7 #60 15.9 #100 11.3 #200 10.3 #270 10.2 u.u3 U.UU1 % Fines Slit 10.3 Material Description Very Gravelly SAND Some Silt Atterbe Limits tAffM D 43 J20) PL= np LL- nv PI= Classification USCS (D 2487)= SP-SM AASHTO (M 145)= A-1-b Coefficients D90= 13.3106 D85= 10.7765 D60= 1.9893 D50= 0.9489 D30= 0.4300 D15= 0.2362 010= Cu= Cc= Remarks Date Received: 8-7-18 Date Tested: 8-7-18 Tested By: MS Checked By: TR Title: (no specification provided) Location: Onsite Sample Humber: EB-5W Depth: 60' a s s o c i a t e d I Client: Federal Way School District e a r t h s c i e n c e s I Project: Lake Grove Elementary School i n c o r p o r a t e d Grrina4lin• 74A7f7AMf Date Sampled: 7-27-18 Ir W Z I— Z W U [C W a- 10C 9C 8C 7C 6C 5C 4C 3C 2C 1( Particle Size Distribution Report ■ 1 1111 � i III %13" 0.0 luU iu - V R/'�IIY JILC - 111111. % Gravel % Sand % Fines Coarse Fine Coarse Medium Fine Silt Cla 2.8 22.7 12.9 31.9 19.3 10.4 Material Descrip-tion Spec.` Pass? Gravelly SAND Some Silt (Percent) (X=Fail) Atterberg Limits [ASTM D 43A PL= np LL- nv PI= Classification USCS (D 2487)= SP-SM AASHTO (M 145)= A-1-b Caefficlents D90= 11.2357 D85= 8.3990 D60= 1.7546 D50= 0.8650 Dap= 0.4292 D15= 0.2360 D10= Cu= Cc= Remarks Date Received: 8-7-18 Date Tested: 8-7-18 Tested By: MS Checked By: TR Title: TEST R Opening Percent Size Finer 1 100.0 .75 97.2 .375 87.2 #4 74.5 #8 63.7 #10 61.6 #20 49.6 #40 29.7 #60 15.9 #100 11.6 #200 10.4 #270 10.4 (no specification provided) Location: Onsite S I Number: EB-5W �: 70' a s s o c i a t e e a r t h s c i e n c e i n c o r p o r a t e Client: Federal Way School District Project: Lake Grove Elementary School Date Sampled: 7-27-18 1 0i 9( 8( 7( Z 6( Z 5( W W 4( a 3( 2( 1( C Particle Size Distribution Report c c c d S c a c c e o v m in N A \^ A V 2 2 T �el NEIIIIIII lingoillilli 11 nmiiliiiilm milli I Oil mil 1111111111111 I Ell 1111111 MI MINE, III OHIO 11111 Millillism nismiiiii liiiimiiiiiii UNION lmiillllumllllll liiiiiim NEI EPSON os INIIIIIIINEmo11 1UU lU i u.l UA1 U.UU1 GRAIN SIZE - m % +3„ % Gravel % Sand % Fines Coarse Fine Coarsel Medium Fine Silt clay 0.0 0.0 17.6 12.6 43.3 13.7 12.8 TEST RESULTS Mer(al Description Opening Percent Spec." Pass? Gravelly Silty SAND Size Finer (Percent) (X=Fail) .75 100.0 .375 94.2 Atterihe!�s (ASTM D 4318) #4 82.4 PL= np LL= nv PI= #8 72.1 #10 69.8 Classification #20 41.4 USCS (D 2487)= SM AASHTO (M 145)= A-1-b #40 26.5 Coefficients #60 19.5 Ogan 7.2433 D85= 5.4834 136n= 1.4104 #100 14.5 D50= 1.0823 D30= 0.5289 D15= 0.1602 #200 12.8 131 p= CU= Cc= #270 12.7 Remarks Date Received: 8-7-18 Date Tested: 8-7-18 Tested By: MS Checked By: TR Title: (no specihcahon provided) Location: Onsite Sample Number: EB-5W Depth: 80' a s s o c i a t e d 1Client: Federal Way School District e a r t h s c i e n c e s Project: Lake Grove Elementary School incorporated `. Project No: 180212 EO01 Date Sampled: 7-27-18 w w Z LL F- Z W L) W a 10C 9C 8C 7C sC 5C 4C 3C A 1( Particle Size Distribution Report ION A I I ION HIM 0 1H M10 11110 n n % Gravel %+3" Coarse Fine 0.0 2.7 9.8 �]I1R11 �I VILL % Sand Coarse IAedium 8.1 35.2 TEST RESULTS Opening Percent Spec." Pass? Size Finer (Percent) (X=Fail) 1 100.0 .75 97.3 .375 94.5 #4 87.5 #8 80.8 #10 79.4 #20 71.5 #40 44.2 #60 24.2 #100 16.1 #200 15.0 #270 15.0 (no specification provided) n: Onsite Number: EB-SW % Fines Fine Slit 29.2 15.0 Mak-ri-a-LD—a4 criptian Gravelly Silty SAND AtteeheLimits (ASTM_D 431 Sj PL= np LL= nv PIZ Classification USCS (D 2487)= SM AASHTO (M 145)= A-1-b Coef gluts 090= 5.9366 Dim- 3.7007 060= 0.6069 D50= 0.4829 Dgj= 0.3001 D75= 0.0751 1310= Cu= Cc= Remarks Date Received: 8-7-18 Date Tested: 8-7-18 Tested By: MS Checked By: TR Title: a s s o c i a t e d Client: Federal Way School District e a r t h s c i e n c e s Project: Lake Grove Elementary School i n c o r p o r a t e d Pro ec# Ho: 180212_EOU.1_ Date Sampled: 7-27-18 APPENDIX C Sketch of Proposed Infiltration Facilities September 24, 2018 Ray Vefik Federal Way Public Schools Capital Projects (206) 919-0372 rvefik@fwps.org 1211 S 232"d St Federal Way, WA 98004 RESUBi1f'111� APR 392019 CiTy OF FFCFRAL vAy CotAMUNCIY gEVELOPMSil RE: Lake Grove Elementary School — Subsurface Soil UST Investigation 303 SW 3081h Street, Federal Way, Washington PBS Project #41519.000 a PBS PBS Engineering and Environmental Inc. (PBS) performed a subsurface soil investigation at the request of Federal Way Public Schools (FWPS). The investigation was completed at Lake Grove Elementary School (LGES) located at 303 SW 308th Street, Federal Way, Washington (Figure 1). The school facility is currently occupied. PBS understands that FWPS plans to demolish the current facilities at LGES in preparation for construction of a new school at the site. The subsurface soil investigation was performed in the vicinity of one underground heating oil storage tank (UST) located to the southwest of the boiler room. The intent was to evaluate if a potential release from the UST has impacted the surrounding soil. The scope of services was presented in the Subsurface Investigation proposal (WA28794) by PBS, dated August 3, 2018. SUBSURFACE SOILS INVESTIGATION On August 23, 2018 PBS met with Applied Professional Services (APS) of North Bend, Washington to conduct private utility locating and conduct a ground penetrating radar (GPR) survey in the area southwest of the boiler room. GPR is a geophysical method that uses radar pulses to reflect images of the subsurface. A manhole providing access to the UST was observed in the area and the GPR survey identified a UST approximately 2.5 feet below ground surface (bgs). The UST lies in a landscaped area surrounded by shrubbery and several trees. It is bound to the north by a parking lot, to the east by buildings, to the south by a grass field, and to the west by a drive aisle and shipping container. Access to this area is provided by a gated, vehicle width driveway. The underground utility survey of the project area indicated numerous potential steam pipes, water lines and sewer pipes, natural gas lines, and buried electrical. Four boring locations were proposed on the north, west, south and east sides of the UST (Figure 2). The UST is estimated to be approximately 8 feet in diameter and 23 feet long. Based on the 2.5-foot depth to the top of the tank determined by the GPR survey, the base of the UST is estimated to be approximately 10.5 feet bgs. On August 28 and 29, 2018, PBS Environmental conducted a subsurface investigation at the subject property to investigate the soil in proximity to the UST. Holocene Drilling of Puyallup, Washington (Holocene) advanced a total of four soil borings (LG-01 to LG-04) using a track mounted direct -push drill rig. Due to the proximity of boring LG-04 to the natural gas line servicing the building, Holocene mobilized a vacuum truck with air knife technology. The boring was advanced to a depth of 5 feet bgs with nondestructive digging methods to avoid 2517 EASTLAKE AVENUE EAST, SUITE 100, SEATTLE, WA 98102 • 206.233.9639 MAIN • 866.727.0140 FAX • PBSUSA.COM Federal Way Public Schools Lake Grove Subsurface Investigation Report September 24, 2018 Page 2 disturbance of the natural gas line. Sampling of all borings was completed by driving a 2.25-inch diameter steel solid -barrel 5-foot sampler lined with a polyvinyl chloride (PVC) sleeve to depth. Two discrete soil samples were collected from each boring at depths corresponding to one to two feet below the estimated base elevation (10.5 feet bgs) of the UST. Groundwater was not encountered in any of the four onsite borings advanced to a maximum depth of 20 feet bgs. All samples were collected in laboratory -supplied containers, placed in a cooler with ice and transported to Fremont Analytical Laboratory in Seattle, Washington, under chain -of -custody documentation. Samples were analyzed for the following: Diesel range total petroleum hydrocarbons (TPH) by Method NWTPH-Dx (method includes reporting TPH in the heavy oil range); Benzene, toluene, ethylbenzene and xylene (BTEX) by US Environmental Protection Agency (EPA) Method 8260C. Additionally, one soil sample was selected for analysis of polycyclic aromatic hydrocarbons (PAHs) by US EPA method 8270-SIM. PBS personnel wore new disposable nitrile gloves when collecting samples. Upon completion of sampling, temporary boreholes were backfilled and sealed with bentonite to six inches below grade and capped with either asphalt or soil to match the surrounding surface. FINDINGS Soil Field Observations The soils encountered in the borings consisted of loose to dense, brown, well graded gravelly sand and dense, gray, silty sand. Drilling refusal was encountered at a depth of 19 feet bgs in boring LG-02. The other three borings were advanced to the total proposed depth of 20 feet bgs. No borings exhibited evidence of staining or odor typical of a petroleum release. Detailed boring logs are included in Attachment A of this report. Sample Results PBS submitted a total of eight soil samples for laboratory analysis. Copies of the laboratory reports and sample chain -of -custody forms are presented in Attachment B. Sampling results and applicable cleanup levels are summarized in Table 1. Results of soil analyses performed are summarized below. TPH as diesel and heavy oil were not detected above laboratory reporting limits in any of the soil samples collected from the site. • BTEX constituents were not detected above laboratory reporting limits in any of the soil samples collected from the site. • PAHs were not detected above laboratory reporting limits in the sample selected for PAH analysis. CONCLUSIONS Based on the findings of this investigation there was no petroleum impacted soil identified to the north, south, east or west of the UST to a maximum depth of 20 feet bgs. However, given the sandy nature of soils encountered at the subject property it is possible that if a release occurred at the base of the tank it could migrate vertically down instead of laterally. PBS recommends removal of the UST during the demolition phase of proposed site construction. A tank closure 41519.000 Federal Way Public Schools Lake Grove Subsurface Investigation Report September 24, 2018 Page 3 assessment should be performed when/if the UST is decommissioned or removed from the subject property. LIMITATIONS PBS has prepared this report for use by FWPS. This report is not intended for use by others without the written consent of the FWPS. Our interpretation of soil conditions in this study was based on field observations and analytical data from the indicated explorations. Regulated substances may exist in portions of the site that were not explored or analyzed. The conclusions in this report are not to be considered a legal opinion as the client's duty concerning due diligence relating to potential liabilities in leasing, owning, or purchasing real estate. PBS ENGINEERING AND ENVIRONMENTAL INC. /X0 Digitally signed by James Welles Date: 2018.09.2416:28:51 -07'00' James Welles Project Geologist Reviewed By: Digitally signed by Thomas Mergy Date:2018.09.24 ' Thomas Mergy, LHG Environmental Services Manager Attachments: Ln 3249 JAMES WELLES i Figure 1: Vicinity Map Figure 2: Sample Location Map Table 1: Laboratory Data Summary Table Attachment A: Borelogs Attachment B: Laboratory Data Attachment C: Toxicity Equivalence Calculations for Carcinogenic PAHs (cPAHs) AUTHOR:REVIEWER:Editor 41519.000 Figures SEATTLE FEDERAL WAY OLYMPIA SITE VANCOUVER SOURCE: USGS POVERTY BAY, WA QUADRANGLE 1990, PHOTO REVISED 1994. '1'b'�11► SCALE 1" = 2000' 0' 1,000' 2,000' 4,000' WASHINGTON PREPARED FOR: FEDERAL WAY PUBLIC SCHOOLS 2018 VICINITY MAP 4 519000 PBS LAKE GROVE ELEMENTARY SCHOOL FIGURE 303 308TH STREET FEDERALVWAY, WASH NGTON �"— RESIDENTIAL SW 308TH ST 1 I LAKE GROVE LG-01 ELEMENTARY LG-02 ��® LG-04 SCHOOL LG-03- '�- APPROXIMATE LOCATION OF UST. SEE ENLARGED VIEW FOR DETAILS. w Y 1 CORNER OF Q5LG-01 BUILDING PARKING LOT I----------� Q5 LG-02 i OM i LG-04 - PRESIDENTIAL SOURCE: ©MCI.' GOOGLE EAR T ,H PRO SITE PLAN SCALE 1" = 150' 0' 75' 150' 300' LEGEND APPROX. LOCATION �LG-03 OLG-01 SOIL BORING NUMBER AND LOCATION OF UST O MANHOLE ENLARGED VIEW SCALE 1" = 20' 4 PREPARED FOR: FEDERAL WAY PUBLIC SCHOOLS SOIL BORING LOCATION MAP 15120 41519.00 �. 0 PBS LAKE G OVE ELEMENTARY SC303 SW 308TH STREET HOOL FIGURE FEDERAL WAY, WASHINGTON 2 Tables n< 0' Z i G 3 D —WI Z o+ 0 0 ' 1O U3 2 � 2 r0i O y p = II ' p ° 3. ° m� a =fi�nn N V1 f'1• 01 f�D am lG n 7 20 7 m O 7 m m fm1 n ,� O m (O m a N �, O m p S n y p_ O g c ^ O� 6 N O 3 m @ Q d lfl C S O �^ `G n a ff 3 o m Q m C-0 ° m N N j O rn O E; C. p y 0 0 p � n�i N o1 m l�0 `Q d -Ma� = xa N m X_ vmi U3 ° '� N Ll COM 03 �'�a,m o c O ;w m C °7' 0 d' in Z a T M > 0. O7 a c c 3 ro N m `c v m N >• VCi 2 m m 0 aDxv m o0 O ° n J m o m N s 7 7CC y = 3 d G S co LA n CD.i = n v m 0 o a T fD c ^' m m � 3 a 7 a n a m O7 C -4 m 90 m m N m f�D 0 in D � m su S 7 m N .Oi a n 3 n D r r r r r r r r 0 0 0 0 0 0 o y W W N N D W O to N In N In N n m m 7 C r O < m r Lppl r Lppl r Gl r Ll r L1 r L1 r L1 r L1 W W N N 6 0 A A O m z Iz! Z m m N N N N N N N N N N N N N N N N O O O O O O O O O co w CD O7 OD OD OD OD M v In O l!1 N V1 N U1 N r 9 0 0 0 0 0 0 0 0� � N A A A A A A A A 3 v in p O W lw OD i0 W -I v O t0 Iw OD O �O Qn fl = 2 A A A A A A A 3 p ODD v V O O ww 0 w w— PO iO O p 0 A A A A A A A A� W p p 0 C 0 0 O 0 0 O 0 O 0 0If � w 'CO ON1 A O AAO A A m AAC A w o 0 0 0 0 0 0 0 3 0 c 0 OO'� C o rn? pOOaAOOOapr O A A co �1 0 00000003 cr a, p 0 NJ p0 O OD 01 V OD ,S• 1p In Lnn In 01 w Co 07 N V7 A V 9 xc ,0 O O O O O O O 2, o� C 0 OJ pO R 0 0 0 y0 S a I,p ° 0D 01 OD w O In In w W A 01 N N •..• Z m 3 � 0 \ Ln m W O ; 0 WP 0 N 3 o v o c m 01 O 9 N 01 � ■ 7 e o c a 0 2 a N �O 1n w � n Ow d Ln w m l0 NC p < O 0 o OD m m m 3 N m 07 m a L^ m ^ °' o D Ej Attachment A Borelogs DEPTH a 0 MATERIAL DESCRIPTION FEET ga o I � 00 LAKE GROVE UST INVESTIGATION LAKE GROVE ELEMENTARY SCHOOL FEDERAL WAY, WA PBS PROJECT NUMBER: 41519.000 Zw am� } O a Mww.. a p Of Wz coW� w ir ASPHALT .• Medium dense light gray SAND (SW) with gravel; very fine to very coarse sand; 30% :•: fine to coarse subrounded gravel; trace 0.0 2.0 silt and clay; dry ... 30 4.0 6.0 0.0 40 8.0 10.0 — 0.0 12.0 .•. Medium dense light gray SAND (SW) with gravel; very fine to very coarse sand; 25% o.o 0 100 ;•: fine to coarse subrounded gravel; no silt - J • or clay; damp 14.0 — 0.0 16.0 (7 J 0.0 100 18.0 - Becomes moist 19.5 ft 0.0 • 20.0 Final depth: 20. ft bgs 24.0 BORING METHOD: Direct Push LOGGED BY: J. Welles K DRILLED BY: Holocene Drilling COMPLETED: 8/28118 o BORING BIT DIAMETER: 2/r[nch BORING W"01 BORING LG-01 LOCATION: (See Site Plan) COMMENTS/ WELL INSTALLATION LAKE GROVE UST INVESTIGATION LAKE GROVE ELEMENTARY SCHOOL BORING LG-02 FEDERAL WAY, WA PBS PROJECT NUMBER: BORING LG-02 LOCATION: Site Plan) 41519.000 (See DEPTH a MATERIAL DESCRIPTION Z W o a a W a o o } > COMMENTS/ WELL INSTALLATION FEET o oa W3 as 22 9z Maw 8 - w CD rainW� W o o.o GRASS and GRAVEL .• Loose yellow brown SAND (SW) with gravel; very fine to very coarse sand; 30% ;•: fine to coarse subrounded gravel; trace 0.0 • silt and clay; dry 2.0 .• Loose dark brown SAND (SW) with 50 -;� gravel; very fine to very coarse sand; 30% '•: fine subrounded gravel; dry 4.0 0.0 — s.o Medium dense brown SAND (SW) with gravel; very fine to very coarse sand; 40% ;•; fine subrounded gravel; trace silt and clay; _ •, damp 70 8.0 0.0 10.0 — 0.0 12.0 — N 100 O L7 J 14.0 0.0 .• Loose yellowish brown poorly graded La ;• SAND (SW) with gravel; very fine to very N 16.0 coarse sand; 15% fine subrounded gravel; dry J 0.0 100 18.0 • 0.0 Final depth; 19.0 ft bgs 20.0 — BORING METHOD: Direct Push LOGGED BY: J. Welles DRILLED BY: Holocene Ddling COMPLETED: 8128118 BORING BIT DIAMETER: 2'/.-inch LAKE GROVE UST INVESTIGATION LAKE GROVE ELEMENTARY SCHOOL BORING LG-03 FEDERAL WAY, WA P B S PBS PROJECT NUMBER: BORING LG-03 LOCATION: Site Plan) - 41519.000 (See o DEPTH a MATERIAL DESCRIPTION d it D F o w a. m W �,� a.O J > o COMMENTS/ WELL INSTALLATION FEET �0 0� as a� Q�J v� c9 c9 wz yW w Ir 0.0—GRASS W and ROOTS •.• Loose yellowish brown SAND (SW) with •;� gravel; very fine to very coarse sand; fine :•: to coarse subrounded gravel; dry 2.0 0.0 60 Medium dense dark brown SAND (SW) �;- with gravel; very fine to very coarse sand; 4.0 ;.; 25% fine subrounded gravel; trace silt and • clay; damp 0.0 — 6.0 •.• 70 8'0 Medium dense light gray SAND (SW) with gravel; very fine to very coarse sand; 15% :•: fine subrounded gravel; damp 0.0 10.0 12.0 N 0.0 100 O J 14.0 — 0.0LO — 1s.o — 6 F 4 J 1 k - 0.0 100 18.0 •.• Dense dark brown SAND (SW) with gravel; very fine to very coarse sand; 25% :•: fine subrounded gravel; moist 0.0 20.0 Final depth: 20.0 ft bgs 22.0 — 24.0 — BORING METHOD: Direct Push LOGGED BY: J. Welles DRILLED BY: Holocene Drilling COMPLETED: 8128/18 BORING BIT DIAMETER: 21/-inch LAKE GROVE UST INVESTIGATION LAKE GROVE ELEMENTARY SCHOOL BORING LG-04 FEDERAL WAY, WA BORING LG-04 LOCATION: PBS41519.000 - -" PBS PROJECT NUMBER: (See Site Plan) } Vacuum 0-6/13irect Push 5-20' oW -iW -j§a�' COMMENTS/ DEPTH za o MATERIAL DESCRIPTION �� o a o o WELL INSTALLATION FEET aa,o of as gm z wW vv O W 0.0 GRAVEL Air knife 0-5 ft 1 2.0 0 4.0 .• Loose brown SAND (SW) with gravel; 0.0 -- very fine to very coarse sand; 30% fine to s.o ;•; coarse subrounded gravel; dry 0.0 50 8.0 •:•:• 10.o 0.0 Dense brown SAND (SW) with gravel; very fine to very coarse sand; 40% fine to •: coarse subrounded gravel; damp 12.0 0.0 100 c� J 0.0 100 0.0 11 20.0 Final depth: 4I 22.0 24.0 z J BORING METHOD: Vacuum/DIn3d Push LOGGED BY: J. Welles DRILLED BY: Holocene Drilling COMPLETED: 8/29/18 c BORING BIT DIAMETER: 2'Y inch Attachment B Laboratory Report and Chain of Custody Documentation Fremont IIiTi7Mirsrf7A 3600 Fremont Ave. N. Seattle, WA 98103 T: (206) 352-3790 F: (206) 352-7178 info@fremontanalytical.com PBS Engineering & Environmental James Welles 2517 Eastlake Ave, E #100 Seattle, WA 98102 RE: Lake Grove Elementary UST Investigation Work Order Number: 1808397 September 13, 2018 Attention James Welles: Fremont Analytical, Inc. received 8 sample(s) on 8/30/2018 for the analyses presented in the following report. Diesel and Heavy Oil by NWTPH--Dx/Dx Ext. Polyaromatic Hydrocarbons by EPA Method 8270 (SIM) Sample Moisture (Percent Moisture) Volatile Organic Compounds by EPA Method 8260C This report consists of the following: - Case Narrative - Analytical Results - Applicable Quality Control Summary Reports - Chain of Custody - All analyses were performed consistent with the Quality Assurance program of Fremont Analytical, Inc. Please contact the laboratory if you should have any questions about the results. Thank you for using Fremont Analytical. Sincerely, Chelsea Ward Project Manager DOD/ELAP Certification #L17-135, ISO/IEC 17025:2005 ORELAP Certification: WA 100009-007 (NELAP Recognized) Original www.fremontanalytical.com Page 1 of 29 Fremont Date: 0911312018 CLIENT: PBS Engineering & Environmental Work Order Sample Summary Project: Lake Grove Elementary UST Investigation Work Order: 1808397 Lab Sample ID 1808397-001 1808397-002 1808397-003 1808397-004 1808397-005 1808397-006 1808397-007 1808397-008 Client Sample ID LG-01-12 LG-01-15 LG-02-12 LG-02-15 LG-03-12 LG-03-15 LG-04-10 LG-04-15 Date/Time Collected 08/28/20181:00 PM 08/28/2018 1:03 PM 08/28/2018 2:08 PM 08/28/2018 2:10 PM 08/28/2018 2:40 PM 08/28/2018 2:45 PM 08/29/2018 3:21 PM 08/29/2018 3:24 PM Date/Time Received 08/30/2018 6:18 PM 08/30/2018 6:18 PM 08/30/2018 6:18 PM 08/30/2018 6:18 PM 08/30/2018 6:18 PM 08/30/2018 6:18 PM 08/30/2018 6:18 PM 08/30/2018 6:18 PM Original Note: If no "Time Collected" is supplied, a default of 12:OOAM is assigned Page 2 of 29 Fremont CLIENT: PBS Engineering & Environmental Project: Lake Grove Elementary UST Investigation I. SAMPLE RECEIPT: Samples receipt information is recorded on the attached Sample Receipt Checklist. Case Narrative W O#: 1808397 Date: 9/13/2018 H. GENERAL REPORTING COMMENTS: Results are reported on a wet weight basis unless dry -weight correction is denoted in the units field on the analytical report ("mg/kg-dry" or "ug/kg-dry"). Matrix Spike (MS) and MS Duplicate (MSD) samples are tested from an analytical batch of "like" matrix to check for possible matrix effect. The MS and MSD will provide site specific matrix data only for those samples which are spiked by the laboratory. The sample chosen for spike purposes may or may not have been a sample submitted in this sample delivery group. The validity of the analytical procedures for which data is reported in this analytical report is determined by the Laboratory Control Sample (LCS) and the Method Blank (MB). The LCS and the MB are processed with the samples and the MS/MSD to ensure method criteria are achieved throughout the entire analytical process. III. ANALYSES AND EXCEPTIONS: Exceptions associated with this report will be footnoted in the analytical results page(s) or the quality control summary page(s) and/or noted below. Original Page 3 of 29 Fremont Qualifiers: Qualifiers & Acronyms W OM 1808397 Date Reported: 9/13/2018 * - Flagged value is not within established control limits B - Analyte detected in the associated Method Blank D - Dilution was required E - Value above quantitation range H - Holding times for preparation or analysis exceeded I - Analyte with an internal standard that does not meet established acceptance criteria J - Analyte detected below Reporting Limit N - Tentatively Identified Compound (TIC) Q - Analyte with an initial or continuing calibration that does not meet established acceptance criteria (<20%RSD, <20% Drift or minimum RRF) S - Spike recovery outside accepted recovery limits ND - Not detected at the Reporting Limit R - High relative percent difference observed Acronyms: %Rec - Percent Recovery CCB - Continued Calibration Blank CCV - Continued Calibration Verification DF - Dilution Factor HEM - Hexane Extractable Material ICV - Initial Calibration Verification LCS/LCSD - Laboratory Control Sample / Laboratory Control Sample Duplicate MB or MBLANK - Method Blank MDL - Method Detection Limit MS/MSD - Matrix Spike / Matrix Spike Duplicate PDS - Post Digestion Spike Ref Val - Reference Value RL - Reporting Limit RPD - Relative Percent Difference SD - Serial Dilution SGT - Silica Gel Treatment SPK - Spike Surr - Surrogate Original www.fremontanalytical.com Page 4 of 29 Fremont Analytical Report Work Order: 1808397 Date Reported: 9/13/2018 Client: PBS Engineering & Environmental Collection Date: 8/28/2018 1:00:00 PM Project: Lake Grove Elementary UST Investigation Lab ID: 1808397-001 Matrix: Soil Client Sample ID: LG-01-12 Analyses Result RL Qual Units DF Date Analyzed Diesel and Heavy Oil by NWTPH-Dx/Dx Ext. Diesel (Fuel Oil) ND 19.6 Heavy Oil ND 49.0 Surr: 2-Fluorobiphenyl 68.8 50 -150 Surr: o-Terphenyl 72.2 50 - 150 Volatile Organic Compounds by EPA Method 8260C Benzene ND 0.0123 Toluene ND 0.0123 Ethylbenzene ND 0.0154 m,p-Xylene ND 0.0308 o-Xylene ND 0.0154 Surr: Dibromofluoromethane 90.6 56.5 - 129 Surr: Toluene-d8 86.9 64.5 - 151 Surr: 1-Bromo-4-fluorobenzene 110 54.8 - 168 Sarnole Moisture Percent Moistum) Percent Moisture 4.10 0.500 Batch ID: 21807 Analyst: SG mg/Kg-dry 1 9/5/2018 5:46:03 AM mg/Kg-dry 1 9/5/2018 5:46:03 AM %Rec 1 9/5/2018 5:46:03 AM %Rec 1 9/5/2018 5:46:03 AM Batch ID: 21878 Analyst: TN mg/Kg-dry 1 9/12/2018 9:45:00 AM mg/Kg-dry 1 9/12/2018 9:45:00 AM mg/Kg-dry 1 9/12/2018 9:45:00 AM mg/Kg-dry 1 9/12/2018 9:45:00 AM mg/Kg-dry 1 9/12/2018 9:45:00 AM %Rec 1 9/12/2018 9:45:00 AM %Rec 1 9/12/2018 9:45:00 AM %Rec 1 9/12/2018 9:45:00 AM Batch ID: R45917 Analyst: NG wt% 1 9/5/2018 10:22:39 AM Original Page 5 of 29 PFremont s d?i� FT7TVK`i0-1�'1171 Analytical Repoli# Work Order: 1808397 Date Reported: 9/1312018 Client: PBS Engineering & Environmental Collection Date: 8/28/2018 1:03:00 PM Project: Lake Grove Elementary UST Investigation Lab ID: 1808397-002 Matrix: Soil Client Sample ID: LG-01-15 Analyses Result RL Qual Units DF Date Analyzed Diesel and Heavv Oil by NWTPH-DxlDx Ext. Diesel (Fuel Oil) ND 18.0 Heavy Oil ND 44.9 Surr: 2-Fluorobiphenyl 71.4 50 - 150 Surr: o-Terphenyl 72.6 50 - 150 Volatile Organic Compounds by EPA Method 8260C Benzene ND 0.01" Toluene ND 0.01" Ethylbenzene ND 0.0181 m,p-Xylene ND 0.0361 o-Xylene ND 0.0181 Surr: Dibromofluoromethane 92.4 56.5 - 129 Surr: Toluene-d8 86.2 64.5 - 151 Surr: 1-Bromo-4-fluorobenzene 106 54.8 - 168 Sample Moisture (Percent Moisturel Percent Moisture 3.04 0.500 Batch ID: 21807 Analyst: SG mg/Kg-dry 1 9/5/2018 7:15:23 AM mg/Kg-dry 1 9/5/2018 7:15:23 AM %Rec 1 9/5/2018 7:15:23 AM %Rec 1 9/5/2018 7:15:23 AM Batch ID: 21878 Analyst: TN mg/Kg-dry 1 9/12/2018 10:17:00 AM mg/Kg-dry 1 9112/201810:17:00 AM mg/Kg-dry 1 9/12/2018 10:17:00 AM mg/Kg-dry 1 9/12/2018 10:17:00 AM mg/Kg-dry 1 9/12/2018 10:17:00 AM %Rec 1 9/12/2018 10:17:00 AM %Rec 1 9/12/2018 10:17:00 AM %Rec 1 9/12/2018 10:17:00 AM Batch ID: R45917 Analyst: NG Wt% 1 9/5/2018 10:22:39 AM Original Page 6 of 29 Fremont Analytical Report Work Order: 1808397 Date Reported: 9/13/2018 Client: PBS Engineering & Environmental Collection Date: 8/28/2018 2:08:00 PM Project: Lake Grove Elementary UST Investigation Lab ID: 1808397-003 Matrix: Soil Client Sample ID: LG-02-12 Analyses Result RL Qual Units DF Date Analyzed Diesel and Heavv Oil by NWTPH..-Dx/Dx Ext. Diesel (Fuel Oil) ND 19.3 Heavy Oil ND 48.1 Sun-: 2-Fluorobiphenyl 71.2 50 - 150 Sun-: o-Terphenyl 73.1 50 -150 Volatile Organic Compounds by EPA Method 8260C Benzene ND 0.0138 Toluene ND 0.0138 Ethylbenzene ND 0.0172 m,p-Xylene ND 0.0344 o-Xylene ND 0.0172 Sun•: Dibromofluoromethane 89.2 56.5 - 129 Surr: Toluene-d8 87.6 64.5 - 151 Sun-: 1-Bromo-4-fluorobenzene 105 54.8 - 168 Sample Moisture (Percent Moisture) Percent Moisture 3.02 0.500 Batch ID: 21807 Analyst: SG mg/Kg-dry 1 9/5/2018 7:45:15 AM mg/Kg-dry 1 9/5/2018 7:45:15 AM %Rec 1 9/5/2018 7:45:15 AM %Rec 1 9/5/2018 7:45:15 AM Batch ID: 21878 Analyst: TN mg/Kg-dry 1 9/12/2018 10:49:00 AM mg/Kg-dry 1 9/12/2018 10:49:00 AM mg/Kg-dry 1 9/121201810:49:00 AM mg/Kg-dry 1 9/12/2018 10:49:00 AM mg/Kg-dry 1 9/12/2018 10:49:00 AM %Rec 1 9/12/2018 10:49:00 AM %Rec 1 9/12/2018 10:49:00 AM %Rec 1 9/12/2018 10:49:00 AM Batch ID: R45917 Analyst: NG Wt% 1 9/5/2018 10:22:39 AM Original Page 7 of 29 VJ Fremont �■►.� mnrM-1,7■ Analytical Report Work Order: 1808397 Date Reported: 9/13/2018 Client: PBS Engineering $ Environmental Collection Date: 8/28/2018 2:10:00 PM Project: Lake Grove Elementary UST Investigation Lab ID: 1808397-004 Matrix: Soil Client Sample ID: LG-02-15 Analyses Result RL Qual Units DF Date Analyzed Diesel and Heavv Oil by NWTPH-Dx/Dx Ext. Diesel (Fuel Oil) ND 20.1 Heavy Oil ND 50.3 Sun-: 2-Fluorobiphenyl 56.7 50 -150 Surr: o-Terphenyl 59.3 50 - 150 Volatile Organic Compounds by EPA Method 8260C Benzene ND 0.0134 Toluene ND 0.0134 Ethylbenzene ND 0.0168 m,p-Xylene ND 0.0336 o-Xylene ND 0.0168 Surr: Dibromofluoromethane 90.0 56.5 - 129 Surr: Toluene-d8 85.5 64.5 - 151 Surr: 1-Bromo-4-fluorobenzene 105 54.8 - 168 ample Moisture (Percent Moisture Percent Moisture 2.21 0.500 Batch ID: 21807 Analyst: SG mg/Kg-dry 1 9/5/2018 8:15:07 AM mg/Kg-dry 1 9/5/2018 8:15:07 AM %Rec 1 9/5/2018 8:15:07 AM %Rec 1 9/5/2018 8:15:07 AM Batch ID: 21878 Analyst: TN mg/Kg-dry 1 9/12/2018 11:53:00 AM ma/Ka-dry 1 9/12/2018 11:53:00 And mg/Kg-dry 1 9/12/2018 11:53:00 AM mg/Kg-dry 1 9/12/2018 11:53:00 AM mg/Kg-dry 1 9/12/2018 11:53:00 AM %Rec 1 9/12/2018 11:53:00 AM %Rec 1 9/12/2018 11:53:00 AM %Rec 1 9/12/2018 11:53:00 AM Batch ID: R45917 Analyst: NG wt% 1 9/5/2018 10:22:39 AM Original Page 8 of 29 Fremont -AF., #�iT►7i'�►-�Tl Client: PBS Engineering & Environmental Project: Lake Grove Elementary UST Investigation Lab ID: 1808397-005 Client Sample ID: LG-03-12 Analyses Result Diesel and Heavv Oil by NVVTPH-Dx/Dx Ext. Analytical Report Work Order: 1808397 Date Reported: 9/13/2018 Collection Date: 8/28/2018 2:40:00 PM Matrix: Soil RL Qual Units DF Date Analyzed Diesel (Fuel Oil) ND 17.7 Heavy Oil ND 44.3 Surr: 2-Fluorobiphenyl 67.2 50 - 150 Surr: o-Terphenyl 71.0 50 - 150 Volatile Organic Compounds by EPA Method 8260C Benzene ND 0.01" Toluene ND 0.0144 Ethylbenzene ND 0.0180 m,p-Xylene ND 0.0359 o-Xylene ND 0.0180 Surr: Dibromofluoromethane 86.4 56.5 - 129 Surr: Toluene-d8 82.6 64.5 - 151 Surr: 1-Bromo-4-fluorobenzene 103 54.8 - 168 Satnple MQisture (Percent M is ur Percent Moisture 4.79 0.500 Batch ID: 21807 Analyst: SG mg/Kg-dry 1 9/5/2018 8:45:00 AM mg/Kg-dry 1 9/5/2018 8:45:00 AM %Rec 1 9/5/2018 8:45:00 AM %Rec 1 9/5/2018 8:45:00 AM Batch ID: 21878 Analyst: TN mg/Kg-dry 1 9/12/2018 1:28:00 PM mg/Kg-dry 1 9/12/2018 1:28:00 PM mg/Kg-dry 1 9/12/2018 1:28:00 PM mg/Kg-dry 1 9/12/2018 1:28:00 PM mg/Kg-dry 1 9/12/2018 1:28:00 PM %Rec 1 9/12/2018 1:28:00 PM %Rec 1 9/12/2018 1:28:00 PM %Rec 1 9/12/2018 1:28:00 PM Batch ID: R45917 Analyst: NG Wt% 1 9/5/2018 10:22:39 AM Original Page 9 of 29 Fremont Analytical Report Work Order: 1808397 Date Reported: 9/13/2018 Client: PBS Engineering & Environmental Collection Date: 8/28/2018 2:45:00 PM Project: Lake Grove Elementary UST Investigation Lab ID: 1808397-006 Matrix: Soil Client Sample ID: LG-03-15 Analyses Result RL Qual Units DF Date Analyzed Diesel and Heavv Oil by NWTPH-Dx/Dx Ext. Diesel (Fuel Oil) ND 19.1 Heavy Oil ND 47.8 Surr: 2-Fluorobiphenyl 67.8 50 -150 Surr: o-Terphenyl 71.7 50 - 150 Volatile QEganic Cornpounds by EPA Method 8260C Benzene ND 0.0130 Toluene ND 0.0130 Ethylbenzene ND 0.0163 m,p-Xylene ND 0.0326 o-Xylene ND 0.0163 Surr: Dibromofluoromethane 93.3 56.5 - 129 Surr: Toluene-d8 86.1 64.5 -151 Surr: 1-Bromo-4-fluorobenzene 105 54.8 - 168 Sample_ -Moisture (Percent Mai.!�ture) Percent Moisture 3.63 0.500 Batch ID: 21807 Analyst: SG mg/Kg-dry 1 9/5/2018 9:15:04 AM mg/Kg-dry 1 9/5/2018 9:15:04 AM %Rec 1 9/5/2018 9:15:04 AM %Rec 1 9/5/2018 9:15:04 AM Batch ID: 21878 Analyst: TN mg/Kg-dry 1 9/12/2018 2:00:00 PM mg/Kg-dry 1 9/12/2018 2:00:00 PM mg/Kg-dry 1 9/12/2018 2:00:00 PM mg/Kg-dry 1 9/12/2018 2:00:00 PM mg/Kg-dry 1 9/12/2018 2:00:00 PM %Rec 1 9/12/2018 2:00:00 PM %Rec 1 9/12/2018 2:00:00 PM %Rec 1 9/12/2018 2:00:00 PM Batch ID: R45917 Analyst: NG Wt% 1 9/5/2018 10:22:39 AM Original Page 10 of 29 Fremont 'f,".1 i7f+ fiat Client: PBS Engineering & Environmental Project: Lake Grove Elementary UST Investigation Lab ID: 1808397-007 Client Sample ID: LG-04-10 Analyses Result Analytical Report Work Order: 1808397 Date Reported: 9/13/2018 Collection Date: 8/29/2018 3:21:00 PM Matrix: Soil RL Qual Units DF Date Analyzed Diesel and Heavy Oil by NYUPH-Dx/Dx Ext. Batch ID: 21807 Analyst: SG Diesel (Fuel Oil) ND 18.9 mg/Kg-dry 1 9/5/2018 9:44:47 AM Heavy Oil ND 47.3 mg/Kg-dry 1 9/5/2018 9:44:47 AM Surr: 2-Fluorobiphenyl 69.5 50 -150 %Rec 1 9/5/2018 9:44:47 AM Sun-: o-Terphenyl 73.0 50 - 150 %Rec 1 9/5/2018 9:44:47 AM Pal aromatic Hydrocarbons by EPA Method 8270 SIM Batch ID: 21871 Analyst: IH Naphthalene ND 36.6 Ng/Kg-dry 1 9/10/2018 11:45:49 PM 2-Methylnaphthalene ND 36.6 pg/Kg-dry 1 9/10/2018 11:45:49 PM 1-Methylnaphthalene ND 36.6 pg/Kg-dry 1 9/10/2018 11:45:49 PM Acenaphthylene ND 36.6 pg/Kg-dry 1 9/10/2018 11:45:49 PM Acenaphthene ND 36.6 pg/Kg-dry 1 9/10/2018 11:45:49 PM Fluorene ND 36.6 pg/Kg-dry 1 9/10/2018 11:45:49 PM Phenanthrene ND 36.6 pg/Kg-dry 1 9/10/2018 11:45:49 PM Anthracene ND 36.6 pg/Kg-dry 1 9/10/2018 11:45:49 PM Fluoranthene ND 36.6 pg/Kg-dry 1 9/10/2018 11:45:49 PM Pyrene ND 36.6 Ng/Kg-dry 1 9/10/2018 11:45:49 PM Benz(a)anthracene ND 36.6 pg/Kg-dry 1 9/10/2018 11:45:49 PM Chrysene ND 36.6 pg/Kg-dry 1 9/10/2018 11:45:49 PM Benzo(b)fluoranthene ND 36.6 pg/Kg-dry 1 9/10/2018 11:45:49 PM Benzo(k)fluoranthene ND 36.6 pg/Kg-dry 1 9/10/2018 11:45:49 PM Benzo(a)pyrene ND 36.6 pg/Kg-dry 1 9/10/2018 11:45:49 PM Indeno(1,2,3-cd)pyrene ND 36.6 Ng/Kg-dry 1 9/10/2018 11:45:49 PM Dibenz(a,h)anthracene ND 36.6 pg/Kg-dry 1 9/10/2018 11:45:49 PM Benzo(g,h,i)perylene ND 36.6 Q pg/Kg-dry 1 9/10/2018 11:45:49 PM Surr: 2-Fluorobiphenyl 77.7 12.5 - 140 %Rec 1 9/10/2018 11:45:49 PM Surr: Terphenyl-d14 (surr) 92.6 45.7 -172 %Rec 1 9/10/2018 11:45:49 PM NOTES: Q - Indicates an analyte with a continuing calibration that does not meet established acceptance criteria (<20%RSD, <20% Drift) yglatile OrganicCompounds A Method 8260C Batch ID: 21878 Analyst: TN Benzene ND 0.0204 mg/Kg-dry 1 9/12/2018 5:40:00 PM Toluene ND 0.0204 mg/Kg-dry 1 9/12/2018 5:40:00 PM Ethylbenzene ND 0.0255 mg/Kg-dry 1 9/12/2018 5:40:00 PM m,p-Xylene ND 0.0510 mg/Kg-dry 1 9/12/2018 5:40:00 PM o-Xylene ND 0.0255 mg/Kg-dry 1 9/12/2018 5:40:00 PM Surr: Dibromofluoromethane 96.0 56.5 - 129 %Rec 1 9/12/2018 5:40:00 PM Surr: Toluene-d8 89.8 64.5 - 151 %Rec 1 9/12/2018 5:40:00 PM Original Page 11 of 29 F)Fremont ■ ■ �:liiT7i�l�r■T7/ Analytical Report Work Order: 1808397 Date Reported: 9/13/2018 Client: PBS Engineering & Environmental Collection Date: 8/29/2018 3:21:00 PM Project: Lake Grove Elementary UST Investigation Lab ID: 1808397-007 Matrix: Soil Client Sample ID: LG-04-10 Analyses Result RL Qual Units DF Date Analyzed Organic m u d 0C Surr: 1-Bromo-4-fluorobenzene 105 54.8 - 168 Sample Moisture (Percent Moiiqure) Percent Moisture 4.58 0.500 Batch ID: 21878 Analyst: TN %Rec 1 9/12/2018 5:40:00 PM Batch ID: R45917 Analyst: NG wt% 1 9/5/2018 10:22:39 AM Original Page 12 of 29 Analytical Report FremontWork Order: 1808397 rI"rAU iIwf7A Date Reported: 9/13/2018 Client: PBS Engineering & Environmental Collection Date: 8/29/2018 3:24:00 PM Project: Lake Grove Elementary UST Investigation Lab ID: 1808397-008 Matrix: Soil Client Sample ID: LG-04-15 Analyses Result RL Qual Units DF Date Analyzed Diesel and Heavy Oil by NWTPH-Dx/Dx Ext. Batch ID: 21824 Analyst: SG Diesel (Fuel Oil) ND 19.3 mg/Kg-dry 1 9/5/2018 7:25:01 PM Heavy Oil ND 48.3 mg/Kg-dry 1 9/5/2018 7:25:01 PM Surr: 2-Fluorobiphenyl 97.1 50 - 150 %Rec 1 9/5/2018 7:25:01 PM Surr: o-Terphenyl 91.7 50 - 150 %Rec 1 9/5/2018 7:25:01 PM Volatile Organic Compounds by EPA Method 8260C Batch ID: 21878 Analyst: TN Benzene ND 0.0156 mg/Kg-dry 1 9/12/2018 6:12:00 PM Toluene ND 0.0156 mg/Kg-dry 1 9/12/2018 6:12:00 PM Ethylbenzene ND 0.0195 mg/Kg-dry 1 9/12/2018 6:12:00 PM m,p-Xylene ND 0.0390 mg/Kg-dry 1 9/12/2018 6:12:00 PM o-Xylene ND 0.0195 mg/Kg-dry 1 9/12/2018 6:12:00 PM Surr: Dibromofluoromethans 95.4 56.5 - 129 %Rec 1 9/12/2018 6:12:00 PM Surr: Toluene-d8 87.6 64.5 - 151 %Rec 1 9/12/2018 6:12:00 PM Surr: 1-Bromo-4-fluorobenzene 106 54.8 - 168 %Rec 1 9/12/2018 6:12:00 PM 5ample MQiStUre (Percent Moisture) Batch ID: R45917 Analyst: NG Percent Moisture 4.84 0.500 Wt% 1 9/5/2018 10:22:39 AM Original Page 13 of 29 W D 0 cn = v, D 0 cn q co C y N cD 3 c c m 3 � v N ,� m � v N C W v CD Q N O T m 0 v m v to � Doo r o � �o o G, CD . , w CD b Go A cr A K K � N -4 V S CD i N -4 V C O � g dl T m m 0 m 0i 9 3 ci 3 s D arn� ID 3 i N coozz m r G :1 w m — � ao m iv o v v — 0 a A A i A i o r V s r CD Tcn TT 0 iD W i N cn cn � NT C T�T C CD N < f/1 < y m m m m w o i m i0 in i m n n O N O N (A CA 3 0(A m Ul v v oo v v = m m = m m s S (O w o w i i i r N N i i r N I" 0 o w N o 0 3 a w al CD CD 40 T ca co X ca ca v v m m CD_ �r e e o o � o 0 o m o o v o N ;0 N � O f0 v v 3 - w w 3 0 0 - dA O N C -n m ao CD Cr ID 7 K f0 O A 00 Ln ? 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Is Chain of Custody complete? 2. How was the sample delivered? Log In 3. Coolers are present? 4. Shipping container/cooler in good condition? 5. Custody Seals present on shipping container/cooler? (Refer to comments for Custody Seals not intact) 6. Was an attempt made to cool the samples? 7. Were all items received at a temperature of >0°C to 10.0°C* 8. Sample(s) in proper container(s)? 9. Sufficient sample volume for indicated test(s)? 10. Are samples properly preserved? 11. Was preservative added to bottles? 12. Is there headspace in the VOA vials? 13. Did all samples containers arrive in good condition(unbroken)? 14. Does paperwork match bottle labels? 15. Are matrices correctly identified on Chain of Custody? 16. Is it clear what analyses were requested? 17. Were all holding times able to be met? Special Handling [if applicalale] g. Was client notified of all discrepancies with this order? Sample Log -In Check List Work Order Number: 1808397 Date Received: 8/30/2018 6:18:00 PM Yes No ❑ Not Present ❑ Client Yes No ❑ NA ❑ Yes ❑d No Yes ❑ No Not Required ❑� Yes No ❑ NA ❑ Yes No ❑ NA ❑ Yes No ❑ Yes No ❑ Yes No ❑ Yes ❑ No NA ❑ Yes ❑ No ❑ NA ❑� Yes No ❑ Yes No ❑ Yes No ❑ Yes No ❑ Yes No ❑ Yes ❑ No ❑ NA ❑d Person Notified: Date By Whom: Via: ❑ eMail ❑ Phone ❑ Fax ❑ In Person Regarding: Client Instructions: 19. Additional remarks: Item Information Item # Temp °C Cooler 8.9 Sample 4.6 Note: DoD/ELAP and TNI require items to be received at 4°C +/- 2°C Original Page 27 of 29 1,0 CD LA in - m rho ? CL ?L 11 A ft Ln M 0 2 upj 00 AN *j m al m I Z'9 :Z�L m - 8 g CL 33 . Jk m vi wl I j rb I -LI 4L OD M 00 0 w T io m W-- A> ff Tf CD rD n 3 cm m 9 0 CL ...... .... 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I 1 1 {I 1 � ems, l� si`� � ► rri b 1 Cr1j n + s r 1 N m U�� i 1 A•t G: fbst Wx ✓�oom m i3 iN rr Ci 1 o, rn o E fv in yin A w R_ � ? o V • f1 I n+ N ..V. 4 i v+ ` V , ` " _ \ \ , 1 ` �+ 1 1 C -C j V tC O z ��a S o r O m Y ro a ,� , o n i� r •c a I Oa r n 3 Fa p.�. •n RF LI. fD a O1 O I m ,a o it t; C G 3 j - - - -- - - -- rrg0 f a � � ! n are ••.._ ��, � i CL I I i o Nry ia':7C iy 1 •:. 3 y C € a+ b A8/�tl. o foJ dj ! r D' .c Mm :3r ft c M i rn ro r� A m ` m ru m N M m 1 Ix 1 0 Cl TO vo I Page 29 of 29 Attachment C Toxicity Equivalence Calculations for Carcinogenic PAHs (cPAHs) 5-a0a_aa ® _ CD CD CD E E Q M ' ' ' > CD 0N� ƒ CD am m wM o0g > k A B B 0 CD CD § M C § n � § CD § m m � � E -n o A0 2 m n � � � PP2PPP / 2 G � $ moo@o@co J @oaoboea ' cwwwwwww rc=oc000 �cccc=oo ] 0.0 CD Cc = c M o < N CC � o 2PP2Poo w-0 k W k W k k W W \ "MMMMMMMM CD � -n a E � 0 0 2 § -4 § Q E � ®< r m & E :3 ■ o E cn C § 0 2 C00M ko 2 cr n E _ § m ■ . CD § ] 0 r— CD 0 @wC- ■ =r (D =r E 0 a ■ g ■ E - E0 0 0 k E 0 o 2 § § 0) Co O 0 o � � 0 CD g a)o (D n 0)w ] J ���k Z OD0t0 �k2%D / 0 cn >0<> ■_ ƒ k 0 � 0 000 o m o ] � � ■ m E -4 < g , E w ■ c k CD C-D� § = ] o § a BMP T8.40: Media Filter Drain (previously referred to as the Ecology Embankment) General The media filter drain (MFD), previously referred to as the ecology Description embankment, is a linear flow -through stonnwater runoff treatment device that can be sited along highway side slopes (conventional design) and medians (dual media filter drains), borrow ditches, or other linear depressions. Cut -slope applications may also be considered. The media filter drain can be used where available right of way is limited, sheet flow from the highway surface is feasible, and lateral gradients are generally less than 25% (4H:1 V). The media filter drain has a General Use Level Designation (GULD) for basic, enhanced, and phosphorus treatment. Updates/changes to the use -level designation and any design changes will be posted in the Postpublication Updates section of the HRM Resource Web Page. Media filter drains (MFDs) have four basic components: a gravel no - vegetation zone, a grass strip, the MFD mix bed, and a conveyance system for flows leaving the MFD mix. This conveyance system usually consists of a gravel-filled_underdrain trench or a layer of crushed surfacing base course (CSBC). This layer of CSBC must be porous enough to allow treated flows to freely drain away from the MFD mix. Typical MFD configurations are shown in Figures 8.5.8, 8.5.9, and 8.5.10. Volume V — Runoff Treatment BMPs - December 2014 8-24 U) z Z JO �H �a r� UW Z r Ln Lnz O U OLLJ H Q ~ W Ln Ln2 w 0 3w o Q Q W LL �K W Ln Z — z Z Z 0 LI a + z _.i�`.��.............� Lu a a. _� Q g ,N J Wa LL �. a W x 0 W_ F 'z ..........: z 20 QZ � N �W g— WO W w v a W� a � Qz a W U I I 1 ...... o .. �p LL0 a S Z Y C1 z -jo m z LL T r a ~ U) FW W LUC c ni W W2 gp N Z D 0 u. C7'7 w � ar r i .....L x F Z � dLL � roo M+ ..ZL o J_ Q wr rya �1 1 O m Jw U z ... F W OOJ W Oa LA O- Z cc O C a LLJ zmU Q W :) W 30� W GQ= �o0 (9 W W 9L VJ Mx N Ln x Z Z xza ZN raw Figure 8.5.8 — Media filter drain: Cross section Volume V — Runoff Treatment BMPs - December 2014 8-25 ZZLU z;0 O>G 4N LL14J W 0 0 W W x > h W WF a irO LLZ ;z 5� w Uzi w Ge LL W z O G J OF O>O 4 W W LU IL U) Z CDz Z>N F �I x IL � J Y O Z 4 12" �y r W r 1� .12" Z Z Ui io io 5 � w U. ................. Y U O ;Z .ZL :FE r + N . �.+. ..........i. ,: 1. LU O z Ui 1 �.......i O a LL G LL Z Y U-CZ JJ WM Z i JO mA wz a Ix ILO z ' C97 � (1LL Z ZL x W Y J Z 4 ! I y 1 W w H 0 z z JO a -- �a Uc UW � ^ cnLn N ZO WU wz 00 V7 .w -.n Figure 8.5.9 — Dual media filter drain: Cross section Volume V — Runoff Treatment BMPs - December 2014 8-26 rJ� J a ❑ a in r I z 0 CO Ua w> Z il� a- 3W �a W r� �V UW « MO W LL rn inz U WZ In U W .. (ao Ln r N z W Z f 1 ` f �[ Z O ❑ UZ � a� W aW J a f _ .• z CL LL 0= ~ g Cr LL i Q wu W 2 W F O 0 r... 0 ;Z �Q W �3 w u, o y 0 • R' W a LLJ I p p w o < z 0 ri N Q • W �4C W ar O LLO z Wo rrzp w� J,O w �.ZL X_ XW Y a p.- Ufm z rya 0� opEL O Wlz 2 oa .. a z 0 W omr zpw F LL W 3 J � LU 0 � � O 'J p2l w > W O p� Zz O<= xza 00 waw raw z N Figure 8.5.10 — Media filter drain without underdrain trench Volume V — Runoff Treatment BMPs - December 2014 8-27 Functional The media filter drain removes suspended solids, phosphorus, and metals Description from highway runoff through physical straining, ion exchange, carbonate precipitation, and biofiltration. Stormwater runoff is conveyed to the media filter drain via sheet flow over a vegetation -free gravel zone to ensure sheet dispersion and provide some pollutant trapping. Next, a grass strip, which may be amended with composted material, is incorporated into the top of the fill slope to provide pretreatment, further enhancing filtration and extending the life of the system. The runoff is then filtered through a bed of porous, alkalinity - generating granular medium —the media filter drain mix. Media filter drain mix is a fill material composed of crushed rock (sized by screening), dolomite, gypsum, and perlite. The dolomite and gypsum additives serve to buffer acidic pH conditions and exchange light metals for heavy metals. Perlite is incorporated to improve moisture retention, which is critical for the formation of biomass epilithic biofilm to assist in the removal of solids, metals, and nutrients. Treated water drains from the media filter drain mix bed into the conveyance system below the media filter drain mix. Geotextile lines the underside of the media filter drain mix bed and the conveyance system. The underdrain trench is an option for hydraulic conveyance of treated stormwater to a desired location, such as a downstream flow control facility or stormwater outfall. The trench's perforated underdrain pipe is a protective measure to ensure free flow through the media filter drain mix and to prevent prolonged ponding. It may be possible to omit the underdrain pipe if it can be demonstrated that the pipe is not necessary to maintain free flow through the media filter drain mix and underdrain trench. It is critical to note that water should sheet flow across the media filter drain. Channelized flows or ditch flows running down the middle of the dual media filter drain (continuous off -site inflow) should be minimized. Applications and In many instances, conventional runoff treatment is not feasible due to Limitations right of way constraints (such as adjoining wetlands and geotechnical considerations). The media filter drain and the dual media filter drain designs are runoff treatment options that can be sited in most right of way confined situations. In many cases, a media filter drain or a dual media filter drain can be sited without the acquisition of additional right of way needed for conventional stormwater facilities or capital -intensive expenditures for underground wet vaults. Applications Media Filter Drains The media filter drain can achieve basic, phosphorus, and enhanced water quality treatment. Volume V —Runoff Treatment BMPs -December 2014 8-28 Since maintaining sheet flow across the media filter drain is required for its proper function, the ideal locations for media filter drains in highway settings are highway side slopes or other long, linear grades with lateral side slopes less than 4H:1V and longitudinal slopes no steeper than 5%. As side slopes approach 3H: IV, without design modifications, sloughing may become a problem due to friction limitations between the separation geotextile and underlying soils. The longest flow path from the contributing area delivering sheet flow to the media filter drain should not exceed 150 feet. If there is sufficient roadway embankment width, the designer should consider placing the grass strip and media mix downslope when feasible. The project office should ensure the MFD does not intercept seeps, springs, or ground water. Dual Media Filter Drain for Highway Medians The dual media filter drain is fundamentally the same as the side -slope version. It differs in siting and is more constrained with regard to drainage options. Prime locations for dual media filter drains in a highway setting are medians, roadside drainage or borrow ditches, or other linear depressions. It is especially critical for water to sheet flow across the dual media filter drain. Channelized flows or ditch flows running down the middle of the dual media filter drain (continuous off -site inflow) should be minimized. Limitations Media Filter Drains • Steep slopes. Avoid construction on longitudinal slopes steeper than 5%. Avoid construction on 3H:1 V lateral slopes, and preferably use less than 4H:1 V slopes. In areas where lateral slopes exceed 4H:IV, it may be possible to construct terraces to create 4H:1 V slopes or to otherwise stabilize up to 3H:1 V slopes. (For details, see Geometry, Components and Sizing Criteria, Cross Section in the Structural Design Considerations section below). • Wetlands. Do not construct in wetlands and wetland buffers. In many cases, a media filter drain (due to its small lateral footprint) can fit within the highway fill slopes adjacent to a wetland buffer. In those situations where the highway fill prism is located adjacent to wetlands, an interception trench/underdrain will need to be incorporated as a design element in the media filter drain. • Shallow ground water. Mean high water table levels at the project site need to be determined to ensure the media filter drain mix bed and the underdrain (if needed) will not become saturated by shallow ground water. • Unstable slopes. In areas where slope stability may be problematic, consult a geotechnical engineer. Volume V — Runoff Treatment BMPs -December 2014 8-29 • Areas of seasonal ground water inundations or basement flooding. Site -specific piezometer data may be needed in areas of suspected seasonal high ground water inundations. The hydraulic and runoff treatment performance of the dual media filter drain may be compromised due to backwater effects and lack of sufficient hydraulic gradient. • Narrow roadway shoulders. In areas where there is a narrow roadway shoulder that does not allow enough room for a vehicle to fully stop or park, consider placing the MFD farther down the embankment slope. This will reduce the amount of rutting in the MFD and decrease overall maintenance repairs. Design Flow Elements Flows to Be Treated I The basic design concept behind the media filter drain and dual media filter drain is to fully filter all runoff through the media filter drain mix. Therefore, the infiltration capacity of the medium and drainage below needs to match or exceed the hydraulic loading rate. Structural Design Considerations Geometry Components No -Vegetation Zone The no -vegetation zone (vegetation -free zone) is a shallow gravel zone located directly adjacent to the highway pavement. The no -vegetation zone is a crucial element in a properly functioning media filter drain or other BMPs that use sheet flow to convey runoff from the highway surface to the BMP. The no -vegetation zone functions as a level spreader to promote sheet flow and a deposition area for coarse sediments. The no - vegetation zone should be between 1 foot and 3 feet wide. Depth will be a function of how the roadway section is built from subgrade to finish grade; the resultant cross section will typically be triangular to trapezoidal. Within these bounds, width varies depending on maintenance spraying practices. Grass Strip The width of the grass strip is dependent on the availability of space within the highway side slope. The baseline design criterion for the grass strip within the media filter drain is a 3-foot-minimum-width, but wider grass strips are recommended if the additional space is available. The designer may consider adding aggregate to the soil mix to help minimize rutting problems from errant vehicles. The soil mix should ensure grass growth for the,design life of the media filter drain. Composted material used in the grass strip shall meet the specifications for compost used in Bioretention Soil Media (BSM). See BMP T7.30. Volume V — Runoff Treatment BMPs -December 2014 8-30 Media Filter Drain Mix Bed The media filter drain mix is a mixture of crushed rock, dolomite, gypsum, and perlite. The crushed rock provides the support matrix of the medium; the dolomite and gypsum add alkalinity and ion exchange capacity to promote the precipitation and exchange of heavy metals; and the perlite improves moisture retention to promote the formation of biomass within the media filter drain mix. The combination of physical filtering, precipitation, ion exchange, and biofiltration enhances the water treatment capacity of the mix. The media filter drain mix has an estimated initial filtration rate of 50 inches per hour and a long-term filtration rate of 28 inches per hour due to siltation. With an additional safety factor, the rate used to size the length of the media filter drain should be 10 inches per hour. Conveyance System Below Media Filter Drain Mix The gravel underdrain trench provides hydraulic conveyance when treated runoff needs to be conveyed to a desired location such as a downstream flow control facility or stormwater outfall. In Group C and D soils, an underdrain pipe would help to ensure free flow of the treated runoff through the media filter drain mix bed. In some Group A and B soils, an underdrain pipe may be unnecessary if most water percolates into subsoil from the underdrain trench. The need for underdrain pipe should be evaluated in all cases. The underdrain trench should be a minimum of 2 feet wide for either the conventional or dual media filter drain. The gravel underdrain trench may be eliminated if there is evidence to support that flows can be conveyed laterally to an adjacent ditch or onto a fill slope that is properly vegetated to protect against erosion. The media filter drain mix should be kept free draining up to the 50-year storm event water surface elevation represented in the downstream ditch. Sizing Criteria Width The width of the media filter drain mix bed is determined by the amount of contributing pavement routed to the embankment. The surface area of the media filter drain mix bed needs to be sufficiently large to fully infiltrate the runoff treatment design flow rate using the long-term filtration rate of the media filter drain mix. For design purposes, a 50% safety factor is incorporated into the long-term media filter drain mix filtration rate to accommodate variations in slope, resulting in a design filtration rate of 10 inches per hour. The media filter drain mix bed should have a bottom width of at least 2 feet in contact with the conveyance system below the media filter drain mix. Volume V —Runoff Treatment BMPs -December 2014 8-31 Length In general, the length of a media filter drain or dual media filter drain is the same as the contributing pavement. Any length is acceptable as long as the surface area media filter drain mix bed is sufficient to fully infiltrate the runoff treatment design flow rate. Cross Section In profile, the surface of the media filter drain should preferably have a lateral slope less than 4H:1V (<25%). On steeper terrain, it may be possible to construct terraces to create a 4H:1 V slope, or other engineering may be employed if approved by Ecology, to ensure slope stability up to 3H:1V. If sloughing is a concern on steeper slopes, consideration should be given to incorporating permeable soil reinforcements, such as geotextiles, open -graded/ permeable pavements, or commercially available ring and grid reinforcement structures, as top layer components to the media filter drain mix bed. Consultation with a geotechnical engineer is required. Inflow Runoff is conveyed to a media filter drain using sheet flow from the pavement area. The longitudinal pavement slope contributing flow to a media filter drain should be less than 5%. Although there is no lateral pavement slope restriction for flows going to a media filter drain, the designer should ensure flows remain as sheet flow. Media Filter Drain Mix Bed Sizing Procedure The media filter drain mix should be a minimum of 12 inches deep, including the section on top of the underdrain trench. For runoff treatment, sizing the media filter drain mix bed is based on the requirement that the runoff treatment flow rate from the pavement area, QHighway, cannot exceed the long-term infiltration capacity of the media filter drain, Qblflltration: Highway b fllration Q :� Q For western Washington, QHighway is the flow rate at or below which 91 % of the runoff volume for the developed TDA will be treated, based on a 15-minute time step and can be determined using and approved continuous runoff model. Volume V — Runoff Treatment BMPs - December 2014 8-32 The long-term infiltration capacity of the media filter drain is based on the following equation: LTIR * L * W = Q Infilh alion C* SF where: LTIR = Long-term infiltration rate of the media filter drain mix (use 10 inches per hour for design) (in/hr) L = Length of media filter drain (parallel to roadway) (ft) W = Width of the media filter drain mix bed (ft) C = Conversion factor of 43200 ((in/hr)/(ft/sec)) SF = Safety Factor (equal to 1.0, unless unusually heavy sediment loading is expected) Assuming that the length of the media filter drain is the same as the length of the contributing pavement, solve for the width of the media filter drain: W 0 High.,, *C* SF LTIR *L Western Washington project applications of this design procedure have shown that, in almost every case, the calculated width of the media filter drain does not exceed 1.0 foot. Therefore, Table 8.5.3 was developed to simplify the design steps and should be used to establish an appropriate width. Table 8.5.3 Western Washington Design Widths for Media Filter Drains Pavement width that contributes runoff to the mediT Minimum media filter filter drain drain width* <_ 20 feet 2 feet -> 20 and <_ 35 feet 3 feet > 35 feet 4 feet * Width does not include the required 1-3 foot gravel vegetation -free zone or the 3-foot filter strip width (see Figure 8.5.8). Underdrain Design Underdrain pipe can provide a protective measure to ensure free flow through the media filter drain (MFD) mix and is sized similar to storm drains. For MFD underdrain sizing, an additional step is required to determine the flow rate that can reach the underdrain pipe. This is done by Volume V — Runoff Treatment BMPs - December 2014 8-33 comparing the contributing basin flow rate to the infiltration flow rate through the media filter mix and then using the smaller of the two to size the underdrain. The analysis described below considers the now rate per foot of MFD, which allows you the flexibility of incrementally increasing the underdrain diameter where long lengths of underdrain are required. When underdrain pipe connects to a storm drain system, place the invert of the underdrain pipe above the 25-year water surface elevation in the storm drain to prevent backflow into the underdrain system. The following describes the procedure for sizing underdrains installed in combination with media filter drains. Calculate the flow rate per foot from the contributing basin to the media filter drain. The design storm event used to determine the flow rate should be relevant to the purpose of the underdrain. For example, if the MFD installation is in western Washington and the underdrain will be used to convey treated runoff to a detention BMP, size the underdrain for the 50-year storm event. (See the Ny draylics Manual. Figure 2-2.1, for conveyance flow rate determination.) Qhighway _ Qhighway ft LMFD where: Qhighway = contributing flow rate per foot (cfs/ft) ft LMFD = length of MFD contributing runoff to the underdrain (ft) 2. Calculate the MFD flow rate of runoff per foot given an infiltration rate of 10 in/hr through the media filter drain mix. f xW xlft lft lhr ftJ QMFD — ./t X 12in X 3600sec where: QMFD = flow rate of runoff through MFD mix layer (cfs/ft) jt W = width of underdrain trench (ft) — see Standard Plan B-55.20-00; the minimum width is 2 ft f = infiltration rate though the MFD mix (in/hr) = 10 in/hr Volume V — Runoff Treatment BMPs - December 2014 8-34 3. Size the underdrain pipe to convey the runoff that can reach the underdrain trench. This is taken to be the smaller of the contributing basin flow rate or the flow rate through the MFD mix layer. QuD = smaller f Qhtighway or QMFD�ft ft ft where: QuD = underdrain design flow rate per foot (cfs/ft) ft 4. Determine the underdrain design flow rate using the length of the MFD and a factor of safety of 1.2. QuD = 1.2 x QuD X W x LMFD ft where: QuD = estimated flow rate to the underdrain (cfs) W = width of the underdrain trench (ft) — see Standard Plan B-55.20-00; the minimum width is 2 ft LmFD = length of MFD contributing runoff to the underdrain (ft) where: 5. Given the underdrain design flow rate, determine the underdrain diameter. Round pipe diameters to the nearest standard pipe size and have a minimum diameter of 6 inches. For diameters that exceed 12 inches, contact either the Region or HQ Hydraulics Office. D=16((QuDxn) 3/8 s0.5 ) D = underdrain pipe diameter (inches) n = Manning's coefficient s = slope of pipe (ft/ft) Materials Media Filter Drain Mix The media filter drain mix used in the construction of media filter drains consists of the amendments listed in Table 8.5.4. Mixing and transportation must occur in a manner that ensures the materials are thoroughly mixed prior to placement and that separation does not occur during transportation or construction operations. Volume V — Runoff Treatment BMPs - December 2014 8-35 These materials should be used in accordance with the following Standard Specifications: • Gravel Backfill for Drains, 9-03.12(4) • Underdrain Pipe, 7-01.3(2) • Construction Geotextile for Underground Drainage, 9-33.1 �I W Pipe BeddinglBacklill and Underdrain Figure 8.5.4 - Media filter drain underdrain installation Crushed Surfacing Base Course (CSBC) If the design is configured to allow the media filter drain to drain laterally into a ditch, the crushed surfacing base course below the media filter drain should conform to Section 9-03.9(3) of the Standard Specifications. Berms, Baffles, and Slopes See Geometry, Components and Sizing Criteria, Cross Section under Structural Design Considerations above. Volume V— Runoff Treatment BMPs - December 2014 8-36 Table 8.5.4 Media filter drain mix Amendment Quantity Mineral aggregate: Aggregate for Media Filter Drain Mix 3 cubic yards Aggregate for Media filter Drain Mix shall be manufactured from ledge rock, talus, or gravel in accordance with Section 3-01 of the Standard Specifications for Road, Bridge, and Municipal Construction (2002), which meets the following test requirements for quality. The use of recycled material is not permitted.: Los Angeles Wear, 500 Revolutions 35% max. Degradation Factor 30 min. Aggregate for the Media Filter Drain Mix shall conform to the following requirements for grading and quality: Sieve Size Percent Passing (by weight) 1/2"square 100 3/8" square 90-100 U.S. No. 4 30-56 U.S. No. 10 0-10 U.S. No. 200 0-1.5 % fracture, by weight, min. 75 Static stripping test Pass The fracture requirement shall be at least two fractured faces and will apply to material retained on the U.S. No. 10. Aggregate for the Media Filter Drain shall be substantially free from adherent coatings. The presence of a thin, firmly adhering film of weathered rock shall not be considered as coating unless it exists on more than 50% of the surface area of any size between successive laboratory sieves. Perlite: 1 cubic yard per 3 cubic yards of ❑ Horticultural grade, free of any toxic materials) mineral aggregate ❑ 0-3 0% passing US No. 18 Sieve ❑ 0-10% passing US No. 30 Sieve Dolomite: CaMg(CO3)2 (calcium magnesium carbonate) 10 pounds per cubic yard of ❑ Agricultural grade, free of any toxic materials) perlite ❑ 100% passing US No. 8 Sieve ❑ 0% passing US No. 16 Sieve Gypsum: Noncalcined, agricultural gypsum CaSO4.2H2O (hydrated calcium 1.5 pounds per cubic yard of sulfate) perlite ❑ Agricultural grade, free of any toxic materials) ❑ 100% passing US No. 8 Sieve ❑ 0% passing US No. 16 Sieve Volume V —Runoff Treatment BMPs -December 2014 8-37 Site Design Elements Landscaping Landscaping for the grass strip is the same as for biofiltration swales (Planting unless otherwise specified in the special provisions for the project's Considerations) construction documents. Operations and Maintenance will consist of routine roadside management. While Maintenance herbicides must not be applied directly over the media filter drain, it may be necessary to periodically control noxious weeds with herbicides in areas around the media filter drain as part of a roadside management program. The use of pesticides may be prohibited if the media filter drain is in a critical aquifer recharge area for drinking water supplies. The designer should check with the local area water purveyor or local health department. Areas of the media filter drain that show signs of physical damage will be replaced by local maintenance staff in consultation with region hydraulics/water quality staff. Construction Keep effective erosion and sediment control measures in place until grass Criteria strip is established. Do not allow vehicles or traffic on the MFD to minimize rutting and maintenance repairs Signing Nonreflective guideposts will delineate the media filter drain. This practice allows personnel to identify where the system is installed and to make appropriate repairs should damage occur to the system. If the media filter drain is in a critical aquifer recharge area for drinking water supplies, signage prohibiting the use of pesticides must be provided. Volume V — Runoff Treatment BMPs - December 2014 8-38 Chapter 5 RT.07 — Media Filter Drain VA s Stormwater Best Manaaement Practices Description: Linear flow -through stormwater runoff treatment device along highway side slopes and medians. Also has end -of -pipe configurations. C,eomet Limitations Contributing Flow Path <_ 150' Embankment Slope 2%-25% Media Filter Drain Along SR 167 in King County BMP Function 0 LID Effective Life {Years] ❑ Flow Control 25 Z Runoff Treatment ❑ Oil Control Capital Cost M & 0 Cost a Phosphorus* Low Low to Moderate 0 TSS - Basic RI Dissolved Metals - Enhanced Additional Constraints/Requirements ❑ 4-5 Infiltration Design Criteria 0 Soil Amendments/Compost ❑ Setback ❑ Energy Dissipater/Level Spreader 0 Landscaping/Planting ❑ 5-4.3.3 Facility Liners ❑ Wetland Planting and Plant Establishment 0 5-4.3.7 Signing ❑ Inlet and Outlet Spacing ❑ Fencing ❑ Overflow ❑ Presettling/Pretreatment ❑ Multidisciplinary Team p Underdrain (Where Permitted) ❑ WSDOT Pavement Engineer Approval 0 Soil Preparation TMDLJ303 d -- Considerations' Avoid Preferred ❑ ❑ Fecal Coliform ❑ El Phosphorus* ❑ ❑ Nitrogen ❑ ❑ Temperature ❑ 0 Dissolved Metals ❑ 0 Total Suspended Solids/Turbidity ❑ ❑ Dissolved Oxygen ❑ ❑ pH ❑ ❑ Oil/Grease ❑ ❑ PAHs ❑ ❑ Pesticides 1. See Table 3-1 and Section 2-4.2 for additional guidance. INSDOT Highway Runoff Manual M 31-16.04 Supplement February 2016 Maintenance Re uirements ❑ Access Roads or Pullouts ❑ Vactor Truck Access 0 Mowing ❑ Valve Access ❑ Specialized Equipment ❑ Specialized Training Further Requirements: See Sections 5-3.7.1 and 5.5. Also, see Table 5-21. *if a compost blanket is used on the media filter drain mix then this BMP is not approved for phosphorous control. Page 5-71 Stormwater Best Management Practices Chapter 5 Introduction General Description The media filter drain (MFD), previously referred to as the ecology embankment, is a linear flow -through stormwater runoff treatment device that can be sited along highway side slopes (conventional design) and medians (dual media filter drains), borrow ditches, or other linear depressions. Cut -slope applications may also be considered. You can use the MFD where available right of way is limited, sheet flow from the highway surface is feasible, and lateral gradients are generally less than 25% (4H:1V). You can also use the MFD in an end -of -pipe application where surface runoff is collected and conveyed to a location where flows can be redispersed to the MFD. The MFD has a General Use Level Designation (GULD) for basic, enhanced, and phosphorus treatment (MFD without the 3-inch medium compost blanket). Updates/changes to the use -level designation and any design changes will be posted in the Post Publication Updates section of the HRM Resource Web Page. MFD configurations are separated into seven typical installations. MFD Type 1 though Type 5 have the option of placing a 3-inch medium compost layer with grass over the MFD mix area. If the 3-inch compost layer with grass is used on the MFD mix area, the BMP does not qualify for phosphorous treatment. MFD Types 1 through 7 are shown in Figures 5-23 through 5-29. The different MFD types are briefly described below: ■ MFD Type 1— Sheet flow application with underdrain. ■ MFD Type 2 —Sheet flow applications; flows are from both sides of the median. ■ MFD Type 3 —Sheet flow application without underdrain; drains to slope. ■ MFD Type 4* — End -of -pipe application, redispersed to MFD with underdrain. ■ MFD Type 5* — End -of -pipe application, redispersed to MFD without underdrain. ■ MFD Type 6* — End -of -pipe application that is downstream of a detention BMP, redispersed to MFD with underdrain. MFD Type 6 doesn't have the no -vegetation zone or grass strip because of the sediment storage in the upstream detention BMP. MFD Type 6 must have a 3-inch medium compost blanket with grass over MFD mix area. MFD Type 6 must have 8-inch-diameter compost socks, spaced at a minimum of 4-foot intervals, along the bottom of the MFD media mix. ■ MFD Type 7* —Same as Type 6, except MFD doesn't have an underdrain; it drains to the adjacent side slope. *See Section 5-4.3.5 for redispersal design guidelines using a slotted pipe or perforated pipe in a flow dispersal trench. Page 5-72 WSDOT Highway Runoff Manual M 31-16.04 April 2014 Chapter 5 Stormwater Best Management Practices N Z Z JO 7< UZ 70 �N o z O ULa W r Z VIS F QLU q ^c a Q W }W Ln� 0 Z_ Z a~ ❑Z DC a r W IL �Ir Q LL O N —a a WF W X Ji LL a' o W x tl > Wp W o 40 WJ N ❑ sL a W a W o o ii: z N 0 IL r r J z us m = 0 F N x rn N W z D Q 19 U' = LL go- C z4 Z W �0 FF P'1 z tIJ Y z Z I- Q < I. N JJ 0 X �L pp m a WW N�a 0 LL W i^ a O O wLU:3 DO a x sr w W 0>0 Wdu=i _ O < CUX 4 7WMU N S < 00 xN Ix-S Figure 5-23 Media filter drain Type 1: Side slope application with underdrain. WSDOT Highway Runoff Manual M 31-16.04 April 2014 Page 5-73 Stormwater Best Management Practices W H 0 p J Y Z .wW WW7 04X z W V1 UZ w0 WatlJ JO K- 7 N 1- la.= FK Om oD WI. 0.2 z W UW Re Ow M U I�z O �Z ?z ra m u W r in N R W W W Nv a H W Z Q' .gip F N • C N a W z z w IF o 3 Q a r � LU O ❑ J W F^ r 2 IL RO LL2 irti M. a jz W w Q r J W W d O a w o z ay a W a ma ❑ oc W o W rn 0 o X 0 MI OL O z z rLOD ie w� f W 0q a o. z o i i F W r Lo CO oo ww N�4 7y p.H W 30 Q N tam � z u O wa []x co lit s� O [7� inU Q O42 OX& tn wW warn to x Z(7z 0 LU x >-_y Figure 5-24 Dual media filter drain Type 2: Median application. Page 5-74 Chapter 5 WSDOT Highway Runoff Manual M 31-16.04 April 2014 Chapter 5 Stormwater Best Management Practices O N h F- z A WJ I w Ws 3 w LULL W lal. } �' Wz u N N LLI WZ no Z W .-G W EL w o H E- o ?D O a� 0 o� o Z o°o � Q LU J 2 a g N LL a WF LU J=- LL O Q IL RO LL x <d Z O— ;Z w W y w G i0 ❑ to yy Z O N Q w IL '- Ir W > N O zLU V O N w w N wa Z / I O �r O OD <O a fK m O Z �t H W W Fa're Z- via mO LL z Y Z o � z w a O u! R 2 0 - c-m� N r+ v [�Q7 a) w w s� at LL W s ¢5 a j a. lA in WLLUM W = o a x tea` Figure 5-25 Media filter drain Type 3: Side slope application without underdrain. WSDOT Highway Runoff Manual M 31-16.04 April 2014 Page 5-75 Stormwater Best Management Practices N Z Z O u � z �� N i� siN F W Q J � 'r � � d� id :� r Fs Fat ;PC ~ma� uQt� „ W IQL aw Y W N 1� NuKC a�7S42 J N ,- N C N r= 11' LLI W Z Z Z a °aa aW wig: n N o N O mw l LL LL H w_ t- LL ° aW� W tt W °0 a _ a LL W cc O w _ a a LL W H O x �a J .- � 2 M N a o a IL W LL CO) y r w 19i Uj Wa Z w D 0 LL 0 Q z �03 LL Q W Z O Ri W a.Z o U. � 04 �^ N 0.� 0 R1` W 2 p 2w he 2 LLz 7[ W LLI Q 00 �Q J . M U W W W 1alO FF= z y 00 Z N J <0- m ��� J JILU OCJ J 06 4LU �M W J 0.. Yz ar Nid < �aWN 0LL mN va La U Z �w NWQN owaE waa ay act xa J-a - (A jap vN sJ� MC3M rYe 9 0UOM mWQ? OUQ <Mw cxd 09h= Z< :5m2Q WO.W UU.m Figure 5-26 Media filter drain Type 4: Side slope application with underdrain. Page 5-76 WSDOT Highway Runoff Manual M 31-16.04 April 2014 Chapter 5 Stnrmwatar Pact MananPmant Prar_ticPs p LL N Z ° Z O>J Z O Z F<2 zr 0OR- � z O Oral zONOz a UW ZO&O.4 O 1-O 4AMCM wwor �c zzo—W a W—aJxz oszz aoao W FlF FOz— NW I -IA S0 Oz JaWOW- 7t0— O -1- O aWMW>—O W z 1-a=W tJ3aa-- Oht10 j W za .az x WZ Ot =03CU JO 4f LLI W U12 42aZ0 zOUV <Q � 0 01-z WZ O %a1 •JaWZz - c3w— WUNI . W LL } W Z -.O C%"Oa— - > M0311ACP LnN ,A W W � o H U) � o W a z a Ui a W f7 J LL N �,... W W yw z J I— FzO 'Lz ° — O >z oa z J w LL, r2 OD - N W Q U. oZ 0 W a O g O F- F Q y C9 W m Z L) LU o M H Q Z W y Q � XZ X dLL Z 0 O � ILW LL� �0 \ oN o0 mo m z N C7 O°J LL < J OZ (L LLz z ~~o -jaJWWM M Co YZ inm LU OF� F°a. wJ r s ~AWN OWa' aW VO LLz low XO W0 c in Fay mN LU OOJ aW0 >W JIL0 z <W OO W Wz a N a -wWW yaz Qa'5 ya W �= F-UO Wa WOm 'aa s�a)- z u � tea- — Xa —SL saoaI v+ x Figure 5-27 Media filter drain Type 5: Side slope application without underdrain. WSDOT Highway Runoff Manual M 31-16.04 April 2014 Page 5-77 Stormwater Best Management Practices o m l ' ta z z (R J O O W O O CSO J Zm ;- _ �W < aa< 0 d I-Z �-N— nn cc Oa AsLxs ZLLM >t1 O W 03 IAO ~ �Z-- ea!< OIL !az I-. h. ca sZ �«W WiW O OO U 0I-WO •<a Z - -.WM% �m a— N WZ �0zzt7Z(.i 1-1-0 LP-3 f 0-1- WV 0<00 Ile- 74d'W<OW J00 • OZ z fl 4M/1aOdT M71.Y=�<tl'+O�A fiJi/10� f O z W o� a. W W 0 a W> H U W QW Q��i� OEM"Z °_ W U. Z Z a U. 1- LnCO Q W aU- N o� oz Y W a ~ N H �Q J Mm J O a LL U)O W _ W z a Q OW a _ ju J 1 1 1 a. z O UO OQ a Y ll1 O Q iR� N LLZ Z (/J a� w -10 <W m� N W a pw 00 J� Q Wo W W� O I. O0 OW <� s� Oa Q W> >(WA C7� ILL U O0 �HZ N K <00— w Q �..: OOJN aLLP —< m yLLU)W LUW Z V NILO IL L — d yJ2H �J(AM -I�WW aO Z 07� z V7 a Q' (A a U)-z�1Wi1 c xa vSWanWi 'aN Wy i=0' m9Q 0 le �—CtZf m Q H<W Figure 5-28 Media filter drain Type 6: Side slope application with underdrain. Page 5-78 Chapter 5 WSDOT Highway Runoff Manual M 31-16.04 April 2014 Chapter 5 Stormwater Best Manaaement Practices x Z 0 O � Z Z 2 JO fJ W C W J < f- _ WW Uj d N Ui O��O Hd' Q FWi� W IL I- — Q ZOdZ WO UW 70 ZLmCLQ O aCxp�m c N"-ON ONW2 ti 4 WWQH W=Wa W- P-N w— R � maw Jx0 d040 3Ll.o- WO d Z yrIxQ N2 0 J<wOu. QwVNw7-O O:Fzr U0«� }m O �< WW [CA. -QCYix �= -A N—Lx-u- Ld om �Q N W2 00 +OLnxi=:L:I=u LL OO u. Jz Lev <7�- • 41' MA W W LLI V! Or- a Q W z m- sd < W _ W -0 •J0-LuzCC 7 �WNa . Inmaom -03 woo W Ili WO I.L W O n (5 W On Ln N Z W WLL N� N 00 �� Z 3 W< 100 LL FL LL Q F ram. vY Z W U W Mm N ~ Oa LL O W LL 0 a a g o W Z LL WO _ a Ix W ° Y O LL W o a le WXO < Y r N J 0 LLJ W O FWy iL 00 WZ < N � O CD W O LU O Lu (L J V ¢ Q OD d4 CQA Call � �-f 2 N < R' «- W OLLQ N } s Jlrt..f JW O O Wd W IL \ 0JJ Od <W a m aF O m �0SiJ F-i= viU) 00 JaI a0 C7 Z iL zU Zawo raw c Ka s0W Hw<Z r <N CO)Kar OVG�� w cxa La Nm —Otf m < F<W Figure 5-29 Media filter drain Type 7: Side slope application without underdrain. WSDOT Highway Runoff Manual M 31-16.04 April 2014 Page 5-79 Stormwater Best Management Practices Chapter 5 Functional Description The MFD removes suspended solids, phosphorus (MFD without 3-inch medium compost blanket), and metals from highway runoff through physical straining, ion exchange, carbonate precipitation, and biofiltration. Stormwater runoff is conveyed to the MFD via sheet flow or is redispersed to a vegetation -free gravel zone (MFD Type 1— Type 5) to ensure dispersion and provide some pollutant trapping. Next, a grass strip provides pretreatment, further enhancing filtration and extending the life of the system. The runoff is then filtered through a bed of porous, alkalinity -generating granular medium —the media filter drain mix. Treated water drains away from the MFD mix bed into a downstream conveyance system. Geotextile lines the underside of the MFD mix bed and the underdrain pipe and trench (if applicable). The underdrain trench is an option for hydraulic conveyance of treated stormwater to a desired location, such as a downstream flow control facility or stormwater outfall. The trench's perforated underdrain pipe is a protective measure to ensure free flow through the MFD mix. It may be possible to omit the underdrain pipe if it can be demonstrated that the pipe is not necessary to maintain free flow through the MFD mix and underdrain trench. It is critical to note that water should sheet flow across or be redispersed to the MFD. To ensure sediment accumulation does not restrict sheet flow, edge of pavement installations should include a 1-inch drop between the pavement surface and nonvegetation zone where there is no guardrail or include a 1-inch drop where there is guardrail. Note that MFD Types 4 through Type 7 include a 3-inch drop between the flow spreader and the MFD mix bed to ensure sheet flow continues over time. Applications, Limitations, and LID Feasibility Applications ■ Provides basic, phosphorus (MFD without 3-inch medium compost blanket on MFD mix area), and enhanced water quality treatment. ■ MFD Type land Type 3 — Ideal along highway side slopes, when adjacent to wetlands, and in narrow right of way locations. ■ Dual MFD for Highway Medians (MFD Type 2) — Prime locations for the MFD Type 2 are in highway medians, roadside drainage or borrow ditches, or other linear depressions. It is especially critical for water to sheet flow across the MFD Type 2. Channelized flows or ditch flows running down the middle of the MFD Type 2 (continuous off -site inflow) should be minimized. ■ MFD Type 4 and Type 5 — Ideal where stormwater needs to be or already is captured and conveyed to a discharge location that can accommodate this BMP. These options provide maximum flexibility for placement where sheet flow off the edge of pavement is not feasible. Catch basins and pipes are used to convey stormwater to the MFD Type 4 and Type 5. Page 5-80 WSDOT Highway Runoff Manual M 31-16.04 April 2014 Chapter 5 Stormwater Best Management Practices M MFD Type 6 and Type 7 —ideal where stormwater needs to be collected and conveyed for both runoff treatment and flow control. The MFD is downstream of the detention BM P. Limitations ■ Ensure lateral MFD side slopes adjacent to the roadway pavement (MFD Type 1— Type 3) are less than 4H:1V. As side slopes approach 3H:1V, without design modifications, sloughing may become a problem due to friction limitations between the separation geotextile and underlying soils. ■ Where the MFD is built away from the roadway (MFD Type 4 —Type 7), ensure the lateral MFD side slope is less than 8H:1V. ■ Ensure longitudinal MFD slopes are no steeper than 5%. ■ Ensure the longest flow path from the contributing area delivering sheet flow to the M FD (Type 1— Type 3) does not exceed 150 feet. s Do not construct in wetlands and wetland buffers. ■ Shallow groundwater — Determine seasonal high groundwater table levels at the project site to ensure the MFD mix bed and the underdrain (if applicable) will not become saturated by shallow groundwater. The hydraulic and runoff treatment performance of the MFD may be compromised due to backwater effects and lack of sufficient hydraulic gradient due to shallow groundwater or pooling at the discharge location. ■ Unstable slopes — In areas where slope stability may be problematic, consult a geotechnical engineer. Narrow roadway shoulders — In areas where there is a narrow roadway shoulder (width less than 10 feet), consider placing the MFD farther down the embankment slope. This will reduce the amount of rutting in the MFD and decrease overall maintenance repairs. Also, consider using a MFD Type 5 or Type 6. s Ensure the upstream conveyance system to a MFD Type 4 —Type 7 has adequate hydraulic head to push flows through the redispersal structure and not create upstream flooding problems. LID Feasibility The following criteria describe conditions that make MFDs infeasible to meet the LID requirement. Additional general LID feasibility criteria that apply to all other LID type BMPs can be found in Section 4-5.2, along with the site suitability criteria for infiltration design in Section 4-5.1. The project may still use the MFD to meet the runoff treatment requirement (Minimum Requirement 5). Citation of any of the following infeasibility criteria must be based on an evaluation of site -specific conditions, must be documented using the LID feasibility checklist, and should be included in the project's Hydraulic Report, along with any applicable written recommendations from an appropriate licensed professional (e.g., engineer, geologist, hydrogeologist): WSDOT Highway Runoff Manual M 31-16.04 April 2014 Page 5-81 Stormwater Best Management Practices Chapter 5 ■ Where the site cannot be reasonably designed to locate a MFD on lateral slopes less than 25% (MFD Type 1—Type 3) or 12.5% (MFD Type 4—Type 7). Design Flow Elements Flows to Be Treated Design MFDs to treat the runoff treatment flow rate discussed in Section 3-3.5 under Minimum Requirement 5. Hydrologic methods are presented in Sections 4-3 and 4-4. Structural Design Considerations Geometry Components No -Vegetation Zone —The no -vegetation zone (vegetation -free zone) is a shallow gravel zone located directly adjacent to the highway pavement. The no -vegetation zone is a crucial element in a properly functioning MFD or other BMPs that use sheet flow to convey runoff from the highway surface to the BMP. The no -vegetation zone functions as a level spreader to promote sheet flow and a deposition area for coarse sediments. Make sure the no -vegetation zone is between 1 foot and 3 feet wide. Depth will be a function of how the roadway section is built from subgrade to finish grade; the resultant cross section will typically be triangular to trapezoidal. Within these bounds, width varies depending on WSDOT maintenance spraying practices. Contact the area maintenance office for this information. ■ Grass Strip — The width of the grass strip is dependent on the availability of space within the highway side slope and MFD type. The grass strip is required on MFD Type 1— Type 5. The minimum grass strip width is 3 feet, but wider grass strips are recommended if the additional space is available. At a minimum, the existing embankment will be scarified 2 inches and covered with a 3-inch blanket of medium compost and seeded. Consider adding aggregate to the soil mix to help minimize rutting problems from errant vehicles. The soil mix should ensure grass growth for the design life of the MFD. Media Filter Drain Mix Bed —The MFD mix is a mixture of crushed rock (sized by screening), dolomite, gypsum, and perlite. The crushed rock provides the support matrix of the medium; the dolomite and gypsum add alkalinity and ion exchange capacity to promote the precipitation and exchange of heavy metals; and the perlite improves moisture retention to promote the formation of biomass within the MFD mix. The combination of physical filtering, precipitation, ion exchange, and biofiltration enhances the water treatment capacity of the mix. The MFD mix has an estimated initial filtration rate of 50 inches per hour and a long-term filtration rate of 28 inches per hour due to siltation. With an additional safety factor, the rate used to size the length of the MFD should be 10 inches per hour. Internal 8-inch-diameter medium compost socks are required along the bottom of the MFD Type 6 and Type 7 installations at even 4-foot spacings. Make sure there is a minimum of one row of compost socks for each MFD Type 6 or Type 7 installation. Page 5-82 WSDOT Highway Runoff Manual M 31-16.04 April 2014 Chapter 5 Stormwater Best Management Practices 3-Inch Medium Compost Blanket and Grass — Place a 3-inch medium compost blanket with grass over the media filter drain bed area to reduce noxious weeds and unwanted vegetation. Do not use this compost blanket in phosphorous -sensitive areas or phosphorous total maximum daily load (TMDQ areas. If this option is used, the MFD will not be considered as a phosphorous treatment BMP. Do not use MFD Type 6 and Type 7 in phosphorous -sensitive areas since the 3-inch compost blanket is required. ■ Conveyance System Below Media Filter Drain Mix —The gravel underdrain trench (MFD Type 1, Type 4, and Type 6) provides hydraulic conveyance when treated runoff needs to be conveyed to a desired location such as a downstream flow control facility or stormwater outfall. In Group C and D soils, an underdrain pipe helps ensure free flow of the treated runoff through the MFD mix bed. In sorne Group A and B soils, an underdrain pipe may not be necessary if most water percolates into subsoil from the underdrain trench. Evaluate the need for underdrain pipe in all cases. You may eliminate the gravel underdrain trench if flows can be conveyed laterally to an adjacent ditch or onto a fill slope that is properly vegetated to protect against erosion (MFD Type 3 and Type 5). Keep the MFD mix free draining up to the 50-year storm event water surface elevation represented in the downstream ditch. Length (perpendicular to the direction of flow) ■ The length of the MFD (Type 1— Type 3) is the same as the length of the contributing pavement. ■ The length of the MFD (Type 4 —Type 7) depends on the sizing procedures. (Seethe Design Method section below.) Cross Section in The surface of the MFD (Type 1—Type 3) should have a lateral slope less than 4H:1V (<25%). On steeper terrain, it may be possible to construct terraces to create a 4HAV slope, or other engineering may be employed to ensure slope stability up to 3HAV. ■ The surface of the MFD (Type 4 —Type 7) should have a lateral slope less than 8H:1V (<12.5%). Tributary Area ■ For MFD (Type 1—Type 3), the resultant slope from the contributing drainage area should be less than or equal to 9.4%, calculated using Equation 3311 in Section 5-4.2.2. Materials The MFD mix consists of the amendments listed in Table 5-7. Mixing and transportation must occur in a manner that ensures the materials are thoroughly mixed prior to placement and that separation does not occur during transportation or construction operations. " "Eastern Washington Steep Slope Research for Management of Highway Stormwater," WARD 77.1, Research Report, May 2011. WSDOT Highway Runoff Manual M 31-16.04 Page 5-83 April 2014 Stormwater Best Management Practices Chapter 5 These materials should be used in accordance with the following Standard Specifications: a Gravel Backfill for Drains — 9-03.12(4) • Underdrain Pipe — 7-01.3(2) ■ Construction Geotextile for Underground Drainage, Moderate survivability, drainage class C, woven — 9-33.1 ■ Crushed Surfacing Base Course (CSBC) — 9-03.9(3) If the MFD is configured to allow the treated flows to drain laterally into a ditch (see Figure 5-25, MFD Type 3 and Figure 5-27, MFD Type 5), the crushed surfacing base course below the MFD should conform to Standard Specification 9-03.9(3). Design Method Media Filter Drain Mix Bed Sizing Procedure for MFD Type 1 — Type 3 The width of the MFD mix bed is determined by the amount of contributing pavement routed to the embankment. The surface area of the MFD mix bed needs to be sufficiently large to fully infiltrate and filter the runoff treatment design flow rate using the long-term filtration rate of the MFD mix. For design purposes, incorporate a 50% safety factor into the long-term MFD mix filtration rate to accommodate variations in slope, resulting in a design filtration rate of 10 inches per hour. The MFD mix bed should have a bottom width of at least 2 feet in contact with the conveyance system below the MFD mix. The MFD mix bed should be a minimum of 12 inches deep, including the section on top of the underdrain trench. For runoff treatment, base the sizing of the MFD mix bed on the requirement that the runoff treatment flow rate from the pavement area, QHighway, cannot exceed the long-term infiltration capacity of the MFD, Qlnfil ation: `GHrghwap < Qhfihralnn (E-20) For western Washington, QHighway is the flow rate at or below which 91% of the runoff volume for the developed TDA will be treated, based on a 15-minute time step (see Section 4-3.1.1), and can be determined using the water quality data feature in MGSFlood. For eastern Washington, QHighway is the peak flow rate predicted for the 6-month, short -duration storm under post -developed conditions for each TDA (see Appendix 4C), and can be determined by selecting the short -duration storm option in StormShed. Page 5-84 WSDOT Highway Runoff Manual M 31-16.04 April 2014 Chapter 5 Stormwater Best Management Practices Base the long-term infiltration capacity of the MFD on the following equation: LTIR*L*W C*SF—Qr„filnarn» where: LTIR = Long-term infiltration rate of the media filter drain mix (use 10 inches per hour for design) (in/hr) L = Length of media filter drain (parallel to roadway) (ft) W = Width of the media filter drain mix bed (ft) C W Conversion factor of 43200 ((in/hr)/(ft/sec)) SF = Safety Factor (equal to 1.0, unless unusually heavy sediment loading is expected) (E-21) Assuming that the length of the MFD is the same as the length of the contributing pavement, solve for the width of the media filter drain: QH"hwny * C * SF W>_ LTIR*L (E-22) Western Washington project applications of this design procedure have shown that, in almost every case, the calculated widths of the MFD Type 1 and Type 3 do not exceed 1.0 foot. Therefore, Table 5-6 was developed to simplify the design steps; use it to establish an appropriate width. Table 5-6 Western Washington design widths for media filter drains (Type 1 and Type 3). Pavement width that contributes runoff to the media filter drain _< 20 feet >_ 20 and <_ 35 feet > 35 feet Minimum media filter drain width" 2 feet 3 feet 4 feet *Width does not include the required 1- to 3-foot gravel vegetation -free zone or the 3-foot grass strip width (see Figure 5-23). Media Filter Drain Mix Bed Sizing Procedure for MFD Type 4 and Type 5 The length (perpendicular to the direction of flow) and width (parallel to the direction of flow) of the MFD mix bed (Type 4 and Type 5) is determined by many factors. The design procedure is outlined below: 1. Determine the total tributary pervious and impervious area (ft2) and flow rate (cfs) that will be sent to the MFD. 2. For MFD Type 4 and Type 5, divide the tributary area determined in Step 1 above by the "pavement area to MFD media area" ratio of 19.5. This determines the area of MFD needed, and applies to on-line and off-line Type 4 and Type 5 MFDs. WSDOT Highway Runoff Manual M 31-16.04 April 2014 Page 5-85 Stormwater Best Management Practices Chapter 5 3. From Section 5-4.3.5, choose Option F (slotted flow dispersal pipe) or Option G (perforated pipe in a gravel-backfilled trench with notched grade board) as the redispersal/flow spreader structure type to be used upstream of the MFD. For on-line Type 4 and Type 5 MFDs, the number of flow spreaders and the flow spreader mounding analysis (Option F) is based on the full 100-year rate from the tributary area coming to the MFD. For off-line Type 4 and Type 5 MFDs, the number of flow spreaders and the flow spreader mounding analysis (Option F) is based on the water quality storm flow rate. 4. Determine the length (perpendicular to the direction of flow) and width (parallel to the direction of flow) of the MFD mix bed by the following: a. The flow spreader length shall be between 50 feet and 200 feet. The number of flow spreaders and their lengths are calculated based on the criteria in Step 3 above. b. The width of the MFD mix bed = (flow spreader length)/5 for flow spreader lengths of 50 feet to 100 feet. c. The width of the MFD mix bed = 20 feet for flow spreader lengths of 101 feet to 200 feet. d. Check to make sure the total area of MFD mix bed(s) calculated in (4) is greater than or equal to the area determined in (2) above. Media Filter Drain Mix Bed Sizing Procedure for MFD Type 6 and Type 7 MFD Type 6 and Type 7 are designed as on-line BMPs only. The design procedure is outlined below: 1. From Section 5-4.3.5, choose Option F (slotted flow dispersal pipe) or Option G (perforated pipe in a gravel-backfilled trench with notched grade board) as the redispersal/flow spreader structure type to be used upstream of the MFD. The number of flow spreaders and the flow spreader mounding analysis (if using Option F) shall be based on the 100-year release rate from the detention BMP (MGSFlood, 15-minute time steps). Determine the length of each flow spreader. 2. Determine the MFD mix bed area (L x W) using the long-term infiltration capacity of the MFD based on Equation 21, with the following clarifications: LTIR*L*W — Q2year (E-23) C*SF where: LTIR = Long-term infiltration rate of the media filter drain mix (use 10 inches per hour for design) (in/hr) L = Length of media filter drain (parallel to spreader) (ft) W = Width of the media filter drain mix bed (ft) measured parallel to the flow C = Conversion factor of 43200 ((in/hr)/(ft/sec)) SF = Safety Factor (equal to 2.0) C12yea, = 2-year release rate (15-minute time steps) from the detention facility Page 5-86 WSDOT Highway Runoff Manual M 31-16.04 April 2014 Chapter 5 Stormwater Best Management Practices 3. The number of flow spreaders and length of each flow spreader was determined in Step 1. The length of the flow spreader(s) is equal to the length of the MFD. The width of the MFD follows the same ratios stated in Steps 4b and 4c of the MFD Type 4 and Type 5 design. Determine the total MFD mix bed length (L) and width (W). Check to make sure the calculated MFD mix bed area (L x W) is greater than or equal to the MFD mix bed area calculated in Step 2. Underdrain Design Underdrain pipe can provide a protective measure to ensure free flow through the MFD mix and is sized similar to storm drains. For MFD underdrain sizing, an additional step is required to determine the flow rate that can reach the underdrain pipe. This is done by comparing the contributing basin flow rate to the infiltration flow rate through the MFD mix and then using the smaller of the two to size the underdrain. The analysis described below considers the flow rate per foot of MFD, which allows you the flexibility of incrementally increasing the underdrain diameter where long lengths of underdrain are required. When underdrain pipe connects to a storm drain system, place the invert of the underdrain pipe above the 25-year water surface elevation in the storm drain to prevent backflow into the underdrain system. Pipe Bedding/Baddill and Underdrain Figure 5-30 Media filter drain underdrain installation. The following describes the procedure for sizing underdrains in a MFD Type 1 and 4. Calculate the flow rate per foot from the contributing basin to the MFD. The design storm event used to determine the flow rate should be relevant to the purpose of the underdrain. For example, if the MFD Type 1 installation is in western Washington and the underdrain will be used to convey treated runoff to a detention BMP, size the underdrain for the 50- year storm event. (See the Hydraulics Manual, Figure 2-2.1, for conveyance flow rate determination.) WSDOT Highway Runoff Manual M 31-16.04 April 2014 Page 5-87 Stormwater Best Management Practices Qhighway Qhighway TL LMFD where: Qhighway = contributing flow rate per foot (cfs/ft) ft LMFD = length of MFD contributing runoff to the underdrain (ft) Chapter 5 (E-24) 2. Calculate the MFD flow rate of runoff per foot given an infiltration rate of 10 in/hr through the MFD mix. _ fxWxlft 1-t 1hr Q ft ft x x 12in 3600 sec E-25 where: Q FD = flow rate of runoff through MFD mix layer (cfs/ft) ft W = width of underdrain trench (ft) —see Standard Plan B-55.20-00; the minimum width is 2 ft f = infiltration rate though the MFD mix (in/hr) = 10 in/hr 3. Size the underdrain pipe to convey the runoff that can reach the underdrain trench. This is taken to be the smaller of the contributing basin flow rate or the flow rate through the MFD mix layer. QUD = smaller { Qhighway or QMFD j (E-26) ft l ft ft J where: QuD = underdrain design flow rate per foot (cfs/ft) tt 4. Determine the underdrain design flow rate using the length of the MFD and a factor of safety of 1.2. QuD =1.2 x Quo x W x LMFD f (E-27) where: Quo = estimated flow rate to the underdrain (cfs) W = width of the underdrain trench (ft) — see Standard Plan B-55.20-00; the minimum width is 2 ft LMFD = length of MFD contributing runoff to the underdrain (ft) 5. Given the underdrain design flow rate, determine the underdrain diameter. Round pipe diameters to the nearest standard pipe size and have a minimum diameter of 6 inches. For diameters that exceed 12 inches, contact either the Region or HQ Hydraulics Office. �/s D = 16( S0.5 n)J (E-28) where: D = underdrain pipe diameter (inches) n = Manning's coefficient s = slope of pipe (ft/ft) Page 5-68 WSDOT Highway Runoff Manual M 31-16.04 April 2014 Chapter 5 Table 5-7 Media filter drain mix. Stormwater Best Management Practices 11 Amendment I Quantity Mineral aggregate shall meet all requirements for the WSDOT 2014 Standard 3 cubic yards Specifications 9-03.4 Aggregate for Bituminous Surface Treatment - Crushed screenings 3/8-inch to No.#4 with the exception of: The fracture requirement shall be at least two fractured faces and will apply to material retained on the U.S. No. 4 sieve in accordance with FOP for AASHTO T 335. Perlite: 1 cubic yard per 3 • WSDOT 2016 Standard. Specifications 9-14.4(9) cubic yards of mineral ■ Horticultural grade aggregate • 99% -100% passing U.S. No. 4 Sieve ■ 30% maximum passing U.S. No. 18 Sieve • 10% maximum passing U.S. No. 30 Sieve Dolomite: CaMg(CO3)2 (calcium magnesium carbonate) 40 pounds per cubic ■ WSDOT 2016 Standard Specifications 9-14.4(5) yard of perlite ■ Agricultural grade ■ ASTM C 602 Class Designation E Gypsum: CaSO4.2H2O (hydrated calcium sulfate) 12 pounds per cubic • WSDOT2016 Standard Specifications 9-14.4 6 yard of perlite • Agricultural grade 2 99% - 100% passing the X -inch Sieve ■ 20% maximum passing U.S. No. 20 Sieve WSDOT Highway Runoff Manual M 31-16.04 Page 5-89 Supplement February 2016 Stormwater Best Management Practices Chapter 5 Site Design Elements Landscaping (Planting Considerations) and Plant Establishment Landscape the grass strip the same as the vegetated filter strips (see BMP RT.02) unless otherwise specified in the special provisions for the project's construction documents. Construction Criteria Keep effective erosion and sediment control measures in place until grass strip is established. Do not allow vehicles or traffic on the MFD, to minimize rutting and maintenance repairs. Operations and Maintenance Maintenance will consist of routine roadside management. While herbicides should not be applied directly over the MFD, it may be necessary to periodically control noxious weeds with herbicides in areas around the MFD as part of WSDOT's roadside management program. The use of pesticides may be -prohibited if the MFD is in a critical aquifer recharge area for drinking water supplies. Check with the local area water purveyor or local health department. Areas of the MFD that show signs of physical damage will be replaced by local maintenance staff in consultation with region hydraulics/water quality staff. Maintenance Access Roads (Access Requirements) Refer to Section 5-3.7.1 for maintenance access road requirements and other general maintenance considerations. Signage Refer to Section 5-4.3.7 for signing requirements. Additionally, if the MFD is in a critical aquifer recharge area for drinking water supplies, provide signage prohibiting the use of pesticides. Page 5-90 WSDOT Highway Runoff Manual M 31-16.04 April 2014 •fir s �. :-� ... •,�� - .� •fix r� to re Legend Lake Grove Elementary School 225 Foot rWetlands Streams Lakes > r } Y Landslide Hazard Areas itJ `"• - Erosion HazardAreas %i��A�{ s i +► 'I ��Floodplains e'a Wellhead -. i tilt Eta- rw Y''1 � � I AII 1-91 Y { r ox _ " i- - m n• ice( �� : i �. ' r 110 low kv el integs ARCHITECTURE Lake Grove Elementary School Federal Way Public Schools Height Exemption Narrative 19.200.090 Height Exemption Narrative per FRWC 19.200.090 Special Regulation Notes 12 and 17 The new Lake Grove Elementary School projects seeks exemptions for the building height under special regulation notes 12 and 17 of FRWC 19.200.090. The project complies with special regulations 12 and 17 as noted below: FRWC 19.200.090 special regulations note 12. This use must comply with the requirements of the State Department of Social and Health Services and/or the State Superintendent of Public Instruction. The new Lake Grove Elementary School meets all the requirements of the Office of Superintendent of Public Instruction (OSPI) and the spectrum of activities involved in the planning, design, and construction of school facilities including all activities necessary to create a cost-effective school project. The project is in conformance with the requirements of the State Construction Assistance and Project Forms to receive state funds for school planning, design, and construction. Federal Way Public Schools has conducted a Study and Survey in conformance with OSPI requirements, developed Educational Specifications and District Standards that reflect the goals and objectives set forth in the Study and Survey document, continued Advanced Planning for anticipating future needs, and obtained financing through a capital improvements campaign. Federal Way Public Schools has facilitated a design process that incorporates all planning, specifications, studies, codes, and regulations required to design and construct a school that meets the high-performance standards of Washington State Sustainable Schools Protocols (WSSP). The project meets OSPI requirements to be eligible for state funding to create instructional space for unhoused students based upon current and projected enrollment of Federal Way Public Schools. The new Lake Grove Elementary School meet the safety standards for public school facilities under RCW 28A.525.055. FRWC 19.200.090 special regulations note 17. Minor and supporting structures constructed as a functional requirement of schools may exceed the applicable height limitation; provided, that the director of community development services determines that such structures will not significantly impact adjacent properties. The requirements for school buildings per the Office of Superintendent of Public Instruction (OSPI) include designing to the criteria of Washington Sustainable Schools Protocol (WSSP) and creates a condition that exceeds the applicable height limitations listed in FRWC 19.200.090. Per Section S1.6 of WSSP, the guidelines require the design of a building footprint that does not exceed 60% of the total building square footage. This requirement of reducing the building footprint minimizes the area of the site permanently disturbed by the building. The new Lake Grove Elementary School utilizes multi -story design to achieve this requirement and to help preserve existing open space. Combining the strategies of reducing building footprint and minimizing parking to code minimum decreases the negative effects of the built environment on the existing ecosystems and creates more open space for school and public activities. The classroom spaces of the school are stacked to create a more sustainable design, the height classrooms match the height required in the gymnasium spaced. The gymnasium is located more than 100 feet from an adjacent residential zone, meeting the height requirements of FRWC 19.200.090. Additionally, the building employs a dual outside air (DOAS) mechanical system, housed in the supporting structure of the mechanical attic located centrally above the classroom wings, to meet energy requirements for a more efficient mechanical system design to meet Washington State Energy Code (WSEC) section C406.1 and energy requirements of Washington Sustainable Schools Protocol. The project is seeking exception to the height limitations based upon the requirements of OSPI and WSSP listed above. 117 S. Main Street, Suite 100 • Seattle, WA 98104 • 206.628.3137 FAX 206.628.3138 A Professional Service Corporation with offices in Seattle and Spokane integrus ansnrretrunr Lake Grove Elementary School Federal Way Public Schools Community Design Guidelines Narrative Narrative Summary of applicable Design Guidelines (FWRC 19.115) The new Lake Grove Elementary School utilizes several design strategies to address the intent of the community design guidelines and create a building that incorporates a combination of facade treatments and material modulation to organize and articulate building bulk and scale, add architectural interest, and appeal at a pedestrian scale from adjacent neighbors and streets. The building creates the perception of depth and develops a system of material and color modulation to respond to the site and promote the goals of Federal Way Public Schools to create a safe, secure, and supervisable school campus by using the building as a buffer to street traffic on SW 308th Street and creating a welcoming and attractive entrance to the site. (19.115.050) Site design strategies achieve the general criteria established by incorporating pedestrian areas that create a safe and easily'supervised entry plaza with fixed seating, clear line of site from ground level windows, and play areas that are clearly defined and secured with perimeter fencing. The organization of the building on the site directs activities to identified areas and creates clear site lines around the perimeter to discourage crime and unsafe activities. Landscaping and site elements have been designed to be well defined and easily maintained to create a project that will be well cared for by Federal Way Public Schools maintenance staff and be inviting to the community it serves. Surface parking meets the requirements of 19.125 by utilizing type IV landscaping and meet the requirements of 19.125.070 for interior lot landscaping, landscape islands, permanent curbing, screening, vehicle overhangs, and irrigation; submitted landscape and civil drawings show exact locations and dimensions. Parking and drop-off areas have looped access and driveways have been located to be clearly visible from SW 3081h Street while maintaining a secure and safe route to school for pedestrians. The primary entrance to the school is oriented to SW 308th Street. The site has two entrances of off SW 3081h Street, one for parent drop-off and one for bus -drop off. Both drop-offs unload onto a pedestrian plaza outside the main entrance and is easily supervised from the administration offices at the front of the building. Large windows at the ground level and second level also enhance supervision and safety at the entry. Landscaping is used between the building and the pedestrian plaza and sidewalks to soften the building and create an attractive and inviting arrival experience to the school. Sidewalks are used to connect the pedestrians arriving from the adjacent neighborhoods and connect all areas of the site. Bicycle racks are located near the building entry for easy accessibility and supervision. The service yard is located to the east of the building and houses trash, recycling, transformer, and generator. The Service yard is accessed via the east parking lot and meets the requirements of 19.125.150 and 19.125.040 by providing a screened enclosure and landscape screening along with roof protection above the trash and recycling area. Site lighting is provided at parking and drop-off areas. Site lighting does note spill onto adjacent properties; a site lighting plan has been submitted to show proposed locations and meet the requirements of 19.105.030. (19.115.060) The new Lake Grove Elementary School utilizes existing grades and minimizes impacts to the existing topography. The finish floor elevation matches the finish floor elevation of the existing school. The building incorporates type III landscaping buffer around the site and type IV around the building. The main fagade off of SW 308th Street incorporates a canopy at the main entrance from the pedestrian plaza at the drop-off areas. The building uses material transitions, window shadow box articulation, and texture to breakdown the building massing and scale. The west fagade uses the strategy of creating the classical architectural order of developing a base, middle, and top using material variation, texture and color. The base is a concrete masonry veneer that grounds the building to the site. The masonry base is very durable and creates a sense of permanence that is appropriate for a school building. The middle uses color and texture variation of durable cement board panels and planks to create the perception of depth and material modulation to the fagade while creating a highly supervisable building perimeter to ensure student safety before, during, and after school. The supervision of this area of the site and building is a key element in determining overall building organization and site strategies to reinforce safety concerns along the west fagade. The RECEIVED 117 S. Main Street, Suite 100 - Seattle, WA 98104 - 206.628.3137 FAX 206.628.3138 A Professional Service Corporation with offices in Seattle and Spokane J AN 10 2019 CITY OF FEDERAL WAY COMMUNfTY DEVELOPMENT integruslUflE Statement of Architectural Design Intent Lake Grove Elementary School Page 2 facade is articulated by color accents to breakdown the building scale and uses metal trim transitions at material changes and around large window openings to provide the Office of Superintendent of Public Instruction required daylighting into the classrooms. The large windows create a rhythm that relates to the material transitions and strengthens the facade modulation concepts around the building. The windows are organized within the facade by the material modulation and articulated by a metal shadow box and metal trim. The top of the building uses the articulation of stepped parapet heights and copings to reinforce the rhythm of the material transitions, window arrangement, and color modulation. The north facade along SW 3081h Street continues the strategy of creating a base, middle, and top by utilizing the masonry base and color and texture variation of the cement board panels and planks. The articulation of materials, colors, large storefront windows, an entry canopy, landscape screening, building recesses, and a large pedestrian plaza creates a clear and distinguished main entry and arrival point for students, parents, teachers, and community members when entering the site from either the parent drop-off entry or the bus drop-off entry. (19.115.070) The building is oriented towards SW 3081h Street and incorporates the use of a pedestrian plaza at the parent and bus drop-off areas. The plaza is directly adjacent to the main building entry is protected by a canopy at the entrance. Large ground level windows and directly adjacent administration offices allow for strong site lines and an easily supervised arrival of scholars and community members. Landscaping is utilized between the plaza and' building to enhance the arrival experience and does not impede line of site supervision around the building. (19.115.090) Unobstructed supervision of the site and building is a key element in determining overall building organization and site strategies to reinforce safety concerns along the west and north facade. To create strong site lines and to discourage unsupervised areas where there is a greater risk of crime and undesirable activities the west and north facades do not structurally modulate. The building uses material transitions, color, and texture of masonry, durable cement board panels, and plank to create the perception of depth and material modulation to the facade while creating a highly supervisable building perimeter. The facade modulation is reinforced by utilizing accent trim around windows, trim at material transitions, and organizing scupper boxes and downspouts with regularity within the modulation of materials. The roof of the building uses the articulation of stepped parapet heights and copings to reinforce the rhythm of the material transitions, window arrangement, and color modulation. Alternative methods to organize the building and facade treatments under 19.115.090.5 incorporate a majority of architectural elements from 19.115.060.3.b, such as, pedestrian plaza, entry canopy, and building articulation of large windows, trim to create shadow lines and perceived depth, articulated parapet, and materials variations of masonry and cement board panels and planks. The site implements CPTED design principals to create natural surveillance and access control around the building and to all areas of the site. A completed CPTED checklist has been submitted for the project. The building form and site organization work together to create a project that creates strong site lines, a secure perimeter to keep students and teachers safe, and minimize opportunities for undesirable activity, while creating a building that incorporates a combination of facade treatments and material modulation to articulate massing and scale, add architectural interest, and appeal at a pedestrian scale from adjacent neighbors and streets. 117 S. Main Street, Suite 100 • Seattle, WA 98104 • 206.628.3137 FAX 206.628.3138 A Professional Service Corporation with offices in Seattle and Spokane �+nteg rurs ,U,, Lake Grove Elementary School Federal Way Public Schools Architectural Design Intent Statement of Architectural Design Intent Project Description The purpose of the project is to replace the existing Lake Grove Elementary School for Federal Way Public Schools as part of the bond measure passed by voters in November 2017. The guiding principles developed by the Facilities Planning Committee serve as benchmarks for these projects. The guiding principles are advance strategic goals, learner centered, equity of opportunity, personalized environments, sustainability, safety, community connections, aesthetics, and right size for growing communities. Lake Grove Elementary School is located on an existing 9.44-acre site at 303 Southwest 3081h Street in Federal Way Washington. The site is comprised of two relatively flat areas bisected by a wooded slope. The large lower area is occupied by the existing school, and the smaller upper area is occupied by grass playfields, which are approximately 30-feet higher in elevation than the school building. The site is served by Southwest 308th Street, a single street running east -west along the north edge of the property. The school is mostly surrounded by single family residential development. A professional office zone (PO) and multifamily zone (RM-1880) are located immediately to the east of the site. A wooded area abuts the site to the south and west. Mirror Lake is roughly two blocks away to the southwest. The school property is zoned residential single family (RS-7.2), with schools being a permitted use. The existing Lake Grove Elementary School currently serves approximately 450 scholars from pre -kindergarten through 51h grade. The existing school was originally built in 1965 with various additions and modernizations over the years. The school was last remodeled in 1985. The existing facility is comprised of a single -story building with classrooms arranged along a double loaded corridor and two portable classroom buildings. The existing building occupies a significant portion of the buildable area on the lower area. Given the very limited site access and limited area to build a new school while the existing school is occupied, the School District has decided that the school will be housed off site during construction. Site Organization The automobile drive for parent and visitor traffic at Lake Grove Elementary School is located off SW 3081h Street at the northwest corner of the site aligned with 4th Avenue SW. This drop-off loop is developed to accommodate a long on -site queuing area. The bus and service drive is also off SW 308th Street utilizing the existing curb cut aligned with 3,d Avenue SW. Parking is distributed between a west lot, serving visitors and community users, and a north lot which will be used primarily by staff. Building service access and the service yard is located off the bus loop. Fire lane access to the rear of the school uses the bus drop-off loop, passing around the east fagade of the new school building; a firetruck hammerhead turnaround is incorporated into the hard surface play area south of the gym and multi -purpose spaces. The proposed 1" shaped building, like the existing Lake Grove building form, works well to define and contain the south facing play area, situating the play area between two walls of the school, the wooded sloped to the east and the woods to the south. A new accessible route connecting the lower school and play area with the upper playfield is a priority for the school community to increase the use of this site resource. Building Organization Working closely with the Federal Way Public Schools Design Review Committee, the orientation and organization of the building was developed as a response to desired program adjacencies and the goal of generating a building that can be used as a buffer between vehicular access to the site and the play areas. Another common priority among the Design Review Committee was the ability to zone the building between the more public community functions, like the gymnasium, multi -purpose and library, and more private academic functions. The Design Review Committee 117 S. Main Street, Suite 100 • Seattle, WA 98104 • 206.628,3137 FAX 206.628.3138 A Professional Service Corporation with offices in Seattle and Spokane integrursTUBE Statement of Architectural Design Intent Mirror Lake Elementary School Page 2 expressed a strong desire for shared learning areas outside of the classrooms to accommodate flexibility in teaching and learning methodologies. The basic organizational scheme of the building is a two-story " L". The two-story school maximizes site area and efficiency. At each school, the ground floor of one leg of the 1" contains the entry, administration, learning resource center (library), music classroom, multi -purpose, gymnasium and building services. The multi -purpose room, gymnasium, and music classroom, which also serves as a stage, are organized for after hour community use. Acoustical, operable walls separate the music classroom from the multi -purpose room and the multi -purpose room from the gymnasium to provide the opportunity to create a large group gathering and performance space. The kitchen and building services are located adjacent to the multi -purpose room and gymnasium. A covered outdoor play structure is attached to the gymnasium. The classrooms are arranged along a central corridor and organized around shared learning, or break out, spaces. Pre-school, kindergarten and first grade are located on the first floor, and grades second through fifth are located on the second floor. Pre-school is located near the main entry to minimize travel for the youngest scholars. Kindergarten through third grade have five classrooms each grouped around the shared learning areas, and fourth and fifth grade have four classrooms each grouped around shared learning areas. Pre-school and kindergarten classrooms have toilet rooms located within their spaces, and larger boys' and girls' toilet rooms are situated centrally between classroom groupings. At the intersection of the two legs of the I," the student services are centrally located and near the elevator making them convenient and close to most of the classrooms. The student service offices are grouped together to facilitate collaboration and support a "push -in" model of service. Three stairs are evenly distributed through the building to provide convenient locations for vertical circulation and to help alleviate congestion. With the main parent and visitor traffic occurring to the northwest of the building, the administration is located at the northwest corner of the building for visibility and security. The main building entry faces north toward the bus drop-off loop and is located between the administration and the learning resources center. A long entry canopy leads from the automobile drop-off, directing building users to the front door, while providing cover. The main entry has a vestibule that can be secured to direct all visitors through a door into the reception area before access into the school is permitted. The learning resource center, multi -purpose room, and gymnasium are located to the east of the main entry and are positioned to allow extended use of the facility after school hours while keeping the rest of the school closed off. The gymnasium is located to the east near the base of the slope to provide a closer proximity to the upper playfield. A family connections center is located across the corridor from the main entry. Exterior aevelo ment The exterior building development reflects the buildings' internal organization and the buildings relationship to its site. The buildings material expression is comprised principally of concrete masonry veneer, cement board panel and plank siding, and window assemblies with an articulated parapet roof design and single ply membrane roofing at low slope roofs. The masonry veneer is used mainly at the first floor to provide a durable and low maintenance material where it is most needed and reflect solidity and permanence. The cement panel and plank siding is mainly located at the upper portion of the building to create contrast and provide weather protection while also being durable and low maintenance. A secondary accent cement panel siding is used to break up the scale and to create rhythm, texture, and unique identity to the school. Attic space for the mechanical systems is located on the roof and is fully enclosed. A canopy with a low slope membrane roof provides cover and expression at the main entry. The massing is based on considerations of the building height limits and the residential context of the neighborhoods where the school is located. The multi -purpose and gym spaces utilize clerestory windows to bring daylight into the 117 S. Main Street, Suite 100 • Seattle, WA 98104 • 206.628.3137 FAX 206.628.3138 A Professional Service Corporation with offices in Seattle and Spokane integrus ARCHITECTURE Statement of Architectural Design Intent Mirror Lake Elementary School Page 3 large volumes. The covered play structure is attached to and integrated into the multi -purpose -gym volume. An enclosure screens the service yard, which is accessed by gates for both vehicles and persons. 117 S. Main Street, Suite 100 • Seattle, WA 98104 • 206.628.3137 FAX 206.628.3138 A Professional Service Corporation with offices in Seattle and Spokane RECEIVED L4%446� BAN DEPARTMENT OF COMMUNITY DEVELOPMENT n aneq 33325 8`h Avenue South CITY OF Federal Way, WA 98003 11,r as' irFEDEi:iAl WAY 253-835-2601; Fax 253-835-2609 Federal Way COMMUNITY DEVELOPMENT www.cilvoLT2deralway.com Crime Prevention Through Environmental Design (CPTED) Checklist Directions Please fill out the checklist to indicate which strategies have been used to implement CPTED principles in your proposed project. Please check all strategies that are applicable to your project for each of the numbered guidelines. You may check more than one strategy for each guideline. Your responses will be evaluated by city staff, and will be integrated into the site plan and/or building permit review process. Section and ✓ Functional Area Performance Performance Standard Standard Strategy ■ Applicable during Site Plan Review B Applicable during Building Permit Review Section 1.0 Natural Surveillance 1.1 Blind Corners Avoid blind corners in pathways and parking lots. ®� Pathways should be direct. All barriers along pathways should be permeable (see through) including landscaping, fencing etc. i Consider the installation of mirrors to allow users to see ahead of them and around corners. e Other strategy used:. ❑■ 1.2 Site and Building Layout Allow natural observation from the street to the use, from the use to the street, and between uses Evaluation for Agency Use Only _ ❑Revise _ ❑NA Comments: _ ❑Coi _ []Revise _ ❑NA Comments: Bulletin #022 — January 1, 2011 Page 1 of 9 k:\Handouts\CPTED Checklist Section and ✓ Functional Area Performance Performance Standard Standard Strategy in Applicable during Site Plan Review e Applicable during Building Permit Review eOrient the main entrance towards the street or both streets on For Non -Single corners. ■ Family Development wft Position habitable rooms with windows at the front of the dwelling. ■ Access to dwellings or other uses above commercial/ retail development should not be from the rear of the building. ,e Offset windows, doorways and balconies to allow for natural observation while protecting privacy. ■ MO Locate main entrances/exits at the front of the site and in view of the street. ■ For Commercial/ Retail/ Industrial If employee entrances must be separated from the main and Community 90 entrance, they should maximize opportunities for natural Facilities surveillance from the street. ■ ®/ In industrial developments, administration/offices should be located at the front of the building. ■ Avoid large expanses of parking. Where large expanses of For Surface parking are proposed, provide surveillance such as security Parking and cameras. ■ Parking Structures Access to elevators, stairwells and pedestrian pathways should be clearly visible from an adjacent parking area. ■ Me Avoid hidden recesses. 0 2e Locate parking areas in locations that can be observed by adjoining uses. ■ Open spaces shall be clearly designated and situated at For Common/ locations that are easily observed by people. Parks, plazas, Open Space me common areas, and playgrounds should be placed in the front Areas of buildings. Shopping centers and other similar uses should face streets. 2 Other strategy used: PLAYGRO LOCATED DIRECTLY OUTSIDE THE BACK OF THE BUILDINGS IN FULL VIEW AND COMPLETELY SECURED WITH CHAIN LINK FENCING. Evaluation for Agency Use Only Bulletin #022 — January 1, 2011 Page 2 of 9 k:\Handouts\CPTED Checklist Section and ✓ ' Functional Area Evaluation for Performance Performance Standard Agency Use Only Standard Strategy a Applicable during Site Plan Review e Applicable during Building Permit Review 1.3 Common/Open Space Areas and Public On -Site Open _ ❑Cor Space _ ❑Revise Provide natural surveillance for common/open space areas. _ ❑NA Comments: Position active uses or habitable rooms with windows adjacent to main common/open space areas, e.g. playgrounds, swimming pools, etc., and public on -site open space. 0 Design and locate dumpster enclosures in a manner which screens refuse containers but avoids providing opportunities to hide. ■ Locate waiting areas and external entries to elevators/stairwells Mr close to areas of active uses to make them visible from the building entry. e Locate seating in areas of active uses. e Other strategy used: Al 1.4 Entrances Provide entries that are clearly visible. Design entrances to allow users to see into them before entering. i Entrances should be clearly identified (Signs must conform to FWRC 19.140.060. Exempt Signs. (Applicable during Certificate oLOccLpancy Ins ection). Revise ❑NA Comments: Other strategy used: create a secure entry vesfibule wit contra a entry tr and direct supervision by administrative staff 1.5 Fencing Fence design should maximize natural surveillance from the ❑_Revise street to the building and from the building to the street, and _ ❑NA minimize opportunities for intruders to hide. Comments: Bulletin #022 — January 1, 2011 Page 3 of 9 k:\Handouts\CPTED Checklist Section and ✓ Functional Area Evaluation for Performance Performance Standard Agency Use Only Standard Strategy ■ Applicable during Site Plan Review 9 Applicable during Building Permit Review ❑ Front fences should be predominantly open in design, e.g. pickets or wrought iron, or low in height. e Design high solid front fences in a manner that incorporates ❑ open elements to allow visibility above the height of five feet. e If noise insulation is required, install double -glazing at the ❑ front of the building rather than solid fences higher than five feet. e Other strategy used: NO FENCING ALONG STREETS AT THE FRONT OF THE BUILDINGS. CHAIN LINK USED 1.6 Landscaping _ LiCor Avoid landscaping which obstructs natural surveillance and _ ❑Revise allows intruders to hide. _ ❑NA Comments: ®/ Trees with dense low growth foliage should be spaced or their crown should be raised to avoid a continuous barrier. ■ Use low groundcover, shrubs a minimum of 24 inches in L!r height, or high -canopied trees (clean trimmed to a height of eight feet) around children's play areas, parking areas, and along pedestrian pathways. ■ ve Avoid vegetation that conceals the building entrance from the street. ■ Other strategy used: 1.7 Exterior Lighting — ❑Conf Provide exterior lighting that enhances natural surveillance. _ ❑Revise (Refer to FWRC 19.115.050(7)(a) for specific lighting _ ❑NA requirements.) Comments: Prepare a lighting plan in accordance with Illuminating Engineering Society of America (IESA) Standards, which addresses project lighting in a comprehensive manner. Select a lighting approach that is consistent with local conditions and crime problems. ■ Bulletin #022 — January 1, 2011 Page 4 of 9 k:\Handouts\CPTED Checklist Section and ✓ Functional Area Evaluation for Performance Performance Standard Agency Use Only Standard Strategy ■ Applicable during Site Plan Review 6 Applicable during Building Permit Review Locate elevated light fixtures (poles, light standards, etc.) in a 9/ coordinated manner that provides the desired coverage. The useful ground coverage of an elevated light fixture is roughly twice its height. ■ For areas intended to be used at night, ensure that lighting supports visibility. Where lighting is placed at a lower height to support visibility for pedestrians, ensure that it is vandal - resistant. e ❑ Ensure inset or modulated spaces on a building facade, access/egress routes, and signage is well lit. e El In areas used by pedestrians, ensure that lighting shines on pedestrian pathways and possible entrapment spaces. e Place lighting to take into account vegetation, in its current and ❑ mature form, as well as any other element that may have the potential for blocking light. e Avoid lighting of areas not intended for nighttime use to avoid giving a false impression of use or safety. If danger spots are usually vacant at night, avoid lighting them and close them off to pedestrians. e Select and light "safe routes" so that these become the focus of legitimate pedestrian activity after dark. ■ ❑ Avoid climbing opportunities by locating light standards and electrical equipment away from walls or low buildings. e ❑ Use photoelectric rather than time switches for exterior lighting. e In projects that will be used primarily by older people ❑ (retirement homes, congregate care facilities, senior and/ or community centers, etc.) provide higher levels of brightness in public/common areas. e Other strategy used: C 1.8 Mix of Uses _ uLon In mixed use buildings increase opportunities for natural ❑Revise surveillance, while protecting privacy. _ ❑NA Comments: Bulletin #022 —January 1, 2011 Page 5 of 9 k:\Handouts\CPTED Checklist Section and ✓ Functional Area Evaluation for Performance Performance Standard Agency Use Only Standard Strategy ■ Applicable during Site Plan Review e Applicable during Building Permit Review Where allowed by city code, locate shops and businesses on lower floors and residences on upper floors. In this way, NA ❑ residents can observe the businesses after hours while the residences can be observed by the businesses during business hours. 0 NAM Include food kiosks, restaurants, etc. within parks and parking structures. ■ Other strategy: used 1.9 Security Bars, Shutters, and Doors _ ❑Confi When used and permitted by building and fire codes, security _ ❑Revise bars, shutters, and doors should allow observation of the street _ ❑NA and be consistent with the architectural style of the building. Comments: ❑ Security bars and security doors should be visually permeable (see -through). e Other strategy used: Section and ✓ Functional Area Evaluation for Performance Performance Standard Agency Use Only Standard Strategy ■ Applicable during Site Plan Review e Applicable during Building Permit Review Section 2.0 Access Control 2.1 Building Identification _. (]Conn Ensure buildings are clearly identified by street number to ❑Revise prevent unintended access and to assist persons trying to find _ ❑NA the building. Identification signs must conform to FWRC Comments: 19.140.060. Exempt Signs. ❑ Street numbers should be plainly visible and legible from the street or road fronting the property. 8 Bulletin #022 — January 1, 2011 Page 6 of 9 k:\Handouts\CPTED Checklist Section and ✓ Functional Area Evaluation for Performance Performance Standard Agency Use Only Standard Strategy ■ Applicable during Site Plan Review e Applicable during Building Permit Review In residential uses, each individual unit should be clearly numbered. In multiple building complexes, each building entry ❑ should clearly state the unit numbers accessed from than entry. In addition, unit numbers should be provided on each level or floor. e ❑ Street numbers should be made of durable materials, preferably reflective or luminous, and unobstructed (e.g. by foliage). e For larger projects, provide location maps (fixed plaque ❑ format) and directional signage at public entry points and along internal public routes of travel. e Other strategy used: 2.2 Entrances _ ❑Con Avoid confusion in locating building entrances. ❑Revise _ ❑NA Comments: Entrances should be easily recognizable through design 00 features and directional signagc. (Signs must conform to FWRC 19.140.060. Exempt Signs. ■ Pro Minimize the number of entry points. t Other strategy used: 2.3 Landscaping _Conforms Use vegetation as barriers to deter unauthorized access. El —Revise ❑NA Comments: ❑ Consider using thorny plants as an effective barrier. e Other strategy used: 2.4 Landscaping Location [Ell Cbnl Avoid placement of vegetation that would enable access to a — ❑Revise building or to neighboring buildings. _ ❑NA Comments: Bulletin #022 —January 1, 2011 Page 7 of 9 k:\Handouts\CPTED Checklist Section and ✓ Functional Area Evaluation for Performance Performance Standard Agency Use Only Standard Strategy ■ Applicable during Site Plan Review 6 Applicable during Building Permit Review Avoid placement of large trees, garages, utility structures, fences, and gutters next to second story windows or balconies that could provide a means of access. ■ Other strategy used: ❑ -- 2.5 Security _ uuonn Reduce opportunities for unauthorized access _Revise _ ❑NA Comments: Consider the use of security hardware and/or human measures 2" to reduce opportunities for unauthorized access. (Applicable during Certificate of Occupancy inspection . Other strategy used: 2.6 Signage _ ❑Conf Insure that signage is clearly visible, easy to read and simple _ _ ❑Revise to understand [Signs must conform to FWRC 19.140.060. _ ❑NA Exempt Signs]. Comments: ❑ Use strong colors, standard symbols, and simple graphics for informational signs. e Upon entering the parking area, provide both pedestrians and For Surface ❑ drivers with a clear understanding of the direction to stairs, Parking and elevators, and exits. e Parking Structures ❑ In multi -level parking areas, use creative signage to distinguish between floors to enable users to easily locate their cars. e El Advise users of security measures that are in place and where to find them, i.e. security phone or intercom system. e ❑ Provide signage in the parking area advising users to lock their cars. e Bulletin #022 — January 1, 2011 Page 8 of 9 k:\Handouts\CPTED Checklist Section and ✓ Functional Area Evaluation for Performance Performance Standard Agency Use Only Standard Strategy ■ Applicable during Site Plan Review e Applicable during Building Permit Review ❑ Where exits are closed after hours, ensure this information is indicated at the parking area entrance. e Other strategy used: Section 3.0 Ownership 3.1 Maintenance _ ❑Conf Create a "cared for" image _ ❑Revise _ ❑NA Comments: Ensure that landscaping is well maintained, as per FWRC ETII 19.125.090, in order to give an impression of ownership, care, and security. (Ongoing). Where possible, design multi -unit residential uses such that no NA ❑ more than six to eight units share a common building entrance. ■ Other strategy used: 3.2 Materials _ ❑Conf Use materials, which reduce the opportunity for vandalism. _ ❑Revise _ ❑NA Comments: Consider using strong, wear resistant laminate, impervious glazed ceramics, treated masonry products, stainless steel ❑ materials, anti -graffiti paints, and clear over sprays to reduce opportunities for vandalism. Avoid flat or porous finishes in areas where graffiti is likely to be a problem. e ❑ Where large walls are unavoidable, refer to FWRC 19.125.040(21) regarding the use of vegetative screens. e Common area and/or street furniture shall be made of long ❑ wearing vandal resistant materials and secured by sturdy anchor points, or removed after hours. e Other strategy used: Bulletin #022 — January 1, 2011 Page 9 of 9 k:\Handouts\CPTED Checklist RECEIVED JUL 0 1 2019 CITY OF FEDEMWAY DEPARTMENT OF COMMUNITY D�MENT 33325 81h Avenue South Federal Way, WA 98003-6325 CITY OF 253-835-2607; Fax 253-835-2609 Federal Way �tw.CitllC'eirI<<Ix:!y.Coro HAZARDOUS MATERIALS INVENTORY STATEMENT CRITICAL AQUIFER RECHARGE AND WELLHEAD PROTECTION AREAS I. WHY SHOULD THIS INVENTORY STATEMENT BE FILLED OUT? Critical Aquifer Recharge (CARAs) and Wellhead Protection Areas (WHPAs) are considered "critical areas" pursuant to Federal Way Revised Code (FWCC), Title 14, "Environmental Policy," This inventory statement must be filled out by the applicant or agent for any proposed activity listed in Section R of this handout, and which are located within Wellhead Capture Zones 1, 5, and 10 as shown on the Critical Aquifer Recharge and Wellhead Protection Areas Maps. Please refer to the handout on Critical Aquifer Recharge and Wellhead Protection Areas for a description of the review process. 11. ACTIVITIES GOVERNED BY CARA AND WHPA REGULATIONS The inventory statement must he filled out for the following activities: ■ Construction of any residential structure, including single-family development ■ Construction of any barn or other agricultural structure • Construction of any office, school, commercial, recreational, service, or storage building ■ Construction of a parking lot of any size ■ Other minor new construction (see WAC 197-11-800[21) Additions or modifications to or replacement of any building or facility (does not include tenant improvements) • Demolition of any structure ■ Any landfill or excavation ■ Installation of underground tanks ■ Any division of land, including short plats ■ Change of use, which involves repair, remodeling, and maintenance activities ■ Dredging • Reconstruction/maintenance of groins and similar shoreline protection structures Replacement of utility cables that must be buried under the surface of the bedlands ■ Repair/rebuilding of major dams, dikes, and reservoirs • Installation or construction of any utility, except for on -going operation and maintenance activities of public wells by public water providers ■ Personal wireless service facilities ___PxQjeci hlanie. Lake Grove Elementary — Applicant Federal Way_Public Schools 303 S.W. 308th St. Federal Way, 98023 Project Location _ _ ___ Tracking No. III. TYPES AND QUANTITIES OF HAZARDOUS MATERIALS Please provide the approximate quantity of the types of hazardous materials or deleterious substances that will be stored, handled, treated, used, produced, recycled, or disposed of in connection with the proposed activity. If no hazardous materials will be involved, please proceed to Section IV. MATERIAL LIQUID ( allons) SOLID (pounds) (1) Acid or basic solutions or solids (2) Antifreeze or coolants (3) Bleaches, peroxides, detergents, surfactants, disinfectants, bactericides, algaecides (4) Brake, transmission, hydraulic fluids (5) Brine solutions (6) Corrosion or rust prevention solutions (7) Cutting fluids (8) Deicing materials 100# (9) Dry cleaning or cleaning solvents (10) Electroplating or metal finishing solutions (11) Engraving or etching solutions (12) Explosives 0 (13) Fertilizers 100# (14) Food or animal processing wastes (15) Formaldehyde (16) Fuels, additives, oils, greases Gas 2 Gal (17) Glues, adhesives, or resins (18) Inks, printing, or photocopying chemicals (19) Laboratory chemicals, reagents or standards (20) Medical, hospital, pharmaceutical, dental, or veterinary fluids or wastes (21) Metals (hazardous e.g. arsenic, copper, chromium, lead, mercury, silver, etc. (22) Paints, pigments, dyes, stains, varnish, sealers. 25 Gal (23) Pesticides, herbicides or poisons 40 Gal (24) Plastic resins, plasticizers, or catalysts (25) Photo development chemicals (26) Radioactive sources (27) Refrigerants, cooling water (contact) (28) Sludges, still bottoms (2.9) Solvents, thinners, paint removers or strippers 10 Gal (30) Tanning (leather) chemicals (3 1) Transformer, capacitor oils/fluids, PCB's (32) Waste oil (33) Wood preservatives (34) List OTHF,R hazardous materials or deleterious substances on a separate sheet. Bulletin #056 — January 1, 2011 Page 2 of 3 k:\Handouts\Hazardous Materials Inventory Statement Project Name Lake Grove Elementary Project Location 303 S.W. 308th St. Federal Way, 98023 IV. FURTHER INFORMATION Applica«1Fe6eral Way Public Schools Tracking No. ._ _ Provide the approximate quantity of fill and source of fill to be imported to the site. Approximate Quantity of Imported Fill Source of Fill 23,510 CY Corliss Resource Inc. Check box #1 if you do not plan to store, handle, treat, use, produce, recycle, or dispose of any of the types and quantities of hazardous material or deleterious substance listed in Section III. Check box(s) #2 through #5 (and fill in appropriate blanks) of the below table if they apply to your facility or activity. #1 [ ] The proposed development will not store, handle, treat, use, produce, recycle, or dispose of any of the types and quantities of hazardous materials or deleterious substances listed above. #2 [x ] Above ground storage tanks, having a capacity of 1000_ gallons will be installed. #3 [ ] Construction vehicles will be refueled on site_ Storage within wholesale and retail facilities of hazardous materials, or other deleterious #4 [ ] substances, will be for sale in original containers with a capacity of _ gallons liquid or _mounds solid. The presence of chemical substances on this parcel is/will be for "temporary" non -routine #5 [x ] maintenance or repair of the facility (such as paints and paint thinners) and are in individual containers with a capacity of 10 gallons liquid or mounds solid. Check any of the following items that currently exist or are proposed in connection with the development of the site. #1 [x ] Stormwater infiltration system (e.g_, french drain, dry well, stormwater Swale, etc.) #2 [ x ] Hydraulic lifts or elevator, chemical systems, or other machinery that uses hazardous materials #3 [ ] Cathodic protection wells #4 [ ] Water wells, monitoring wells, resource protection wells, piezometers #5 [x ] Leak detection devices, training for employees for use of hazardous materials, self-contained machinery, etc. SIGNA Signature Print Name 6 6 - Z'&, ac. I � Date If you have any questions about filling out this application form, please call the Department of Community Development Services at 253-835-2607. Please be advised that an application for a developmentpermit lacking the required information will not be accepted. Bulletin #056 — January 1, 2011 Page 3 of 3 k:\Handouts\Hazardous Materials Inventory Statement PUBLIC WORKS a s s o c i a t e d e a r t h s c i e n c e s incorporated Subsurface Exploration, Geologic Hazard, and Preliminary Geotechnical Engineering Report LAKE GROVE ELEMENTARY SCHOOL REPLACEMENT Federal Way, Washington FEDERAL WAY SCHOOL DISTRICT Project No. 180212EO01 June 14, 2018 Revised February 20, 2019 PERMIT #: 19-100959-00-CO ADDRESS: 303 SW 308th ST PROJECT: New Construction LAKE GROVE ELEMENTARY SCHOOL DATE: 03/01 /2019 u. ma`s ! � CITY OF FEDERAL WAY COMMUNI-TY DEVELOPMENT 0-- June 14, 2018 Revised February 20, 2019 Project No. 180212EO01 Federal Way School District 1211 South 332nd Street Federal Way, Washington 98003 Attention: Ms. Ray Vefik a s s o c i a t e d earth sciences Subject: Subsurface Exploration, Geologic Hazard, and Preliminary Geotechnical Engineering Report Lake Grove Elementary School Replacement 303 SW 30g1h Street Federal Way, Washington Dear Mr. Vefik: We are pleased to present copies of the above -referenced report. This report summarizes the results of our subsurface exploration, geologic hazard, and geotechnical engineering studies, and offers preliminary recommendations for the design and development of the proposed project. We were provided with a Topographic Survey provided by AHBL, dated May 8, 2018, and a site plan sketch showing proposed infiltration facility locations, prepared by the Project Civil Engineer, undated, for preparation of this report. Our recommendations are preliminary in that project plans and construction methods were not available at the time this report was written. We should be allowed to review the recommendations presented in this report and modify them, if needed, once final project plans have been formulated. We have enjoyed working with you on this study and are confident that the recommendations presented in this report will aid in the successful completion of your project. If you should have any questions or if we can be of additional help to you, please do not hesitate to call. Sincerely, ASSOCIATED EARTH SCIENCES, INC. Kirkland, Washington (Curt D. Merriman, P.E. Senior Principal Engineer KDM/ms-180212EO01-4 - Projects\20180212\KE\W P Kirkland Office 1911 Fifth Avenue I Kirkland, WA 98033 P 1425.827.7701 Mount Vernon Office 1 508 S. Second Street, Suite 1011 Mount Vernon, WA 98273 P 1425.827.7701 Tacoma Office 11552 Commerce Street, Suite 102 1 Tacoma, WA 98402 P 1253.722.2992 www.aesgeo.com SUBSURFACE EXPLORATION, GEOLOGIC HAZARD, AND PRELIMINARY GEOTECHNICAL ENGINEERING REPORT LAKE GROVE ELEMENTARY SCHOOL REPLACEMENT Federal Way, Washington Prepared for: Federal Way School District 1211 South 332"d Street Federal Way, Washington 98003 Prepared by: Associated Earth Sciences, Inc. 9115th Avenue Kirkland, Washington 98033 425-827-7701 June 14, 2018 Revised February 20, 2019 Project No. 180212EO01 Subsurface Exploration, Geologic Hazard, and Lake Grove Elementary School Replacement Preliminary Geotechnical Engineering Report Federal Way, Washington Project and Site Conditions I. PROJECT AND SITE CONDITIONS 1.0 INTRODUCTION Associated Earth Sciences, Inc. (AESI) has prepared this report which presents the results of our subsurface exploration, geologic hazard, and preliminary geotechnical engineering study for the replacement of the Lake Grove Elementary School located in Federal Way, Washington. Our recommendations are preliminary in that the project is still in the design phase. The recommendations provided in this report are based on a review of a topographic survey by AHBL, dated May 8, 2018; our conversations with the design team; and our experience working in the project area. The site location is shown on the "Vicinity Map," Figure 1. The approximate locations of explorations completed for this study are shown on the "Site and Exploration Plan," Figure 2, and on the "Current Aerial Lidar-Based Topography," Figure 3. Interpretive exploration logs of the subsurface explorations completed for this study are included in Appendix A. 1.1 Purpose and Scope The purpose of this study was to provide subsurface data to be used in the design and development of the above -referenced project. Our study included reviewing selected available geologic literature, advancing eleven exploration borings and completing one as a groundwater monitoring well, and performing geologic studies to assess the type, thickness, distribution, and physical properties of the subsurface sediments and shallow groundwater. Geotechnical engineering studies were completed to formulate preliminary recommendations related to site preparation and grading, the type of suitable foundations and floors, allowable foundation soil bearing pressures, anticipated foundation and floor settlement, pavement recommendations, drainage considerations, and shallow infiltration feasibility. This report summarizes our current fieldwork and offers preliminary recommendations based on our present understanding of the project. We recommend that we be allowed to review the recommendations presented in this report and revise them, if needed, when a project design has been finalized. 1.2 Authorization We were authorized to proceed by means of a Federal Way Public Schools [FWPS) consultant agreement. This report has been prepared for the exclusive use of FWPS and their agents for specific application to this project. Within the limitations of scope, schedule, and budget, our services have been performed in accordance with generally accepted geotechnical engineering and engineering geology practices in effect in this area at the time our report was prepared. No other warranty, express or implied, is made. June 14, 2018,Revised February 20, 2019 ASSOCIATED EARTH SCIENCES, INC. TG/ms-180212EO01-4-Projects 1201802121KEIWP Page 1 Subsurface Exploration, Geologic Hazard, and Lake Grove Elementary School Replacement Preliminary Geotechnical Engineering Report Federal Way, Washington Project and Site Conditions 2.0 PROJECT AND SITE DESCRIPTION The project site is that of the existing Lake Grove Elementary School campus located in Federal Way, Washington. The project site is comprised of a single nearly rectangular parcel approximately 9.4 acres in area. The current site development includes a school campus with a single, irregularly shaped school building located at the central and west portions of the parcel. Other site features include existing paved driveways, paved parking lots, walkways, sports fields, playfields, portable classroom buildings, and utilities. Site topography is generally level in the vicinity of the existing school building. A west -facing slope ranging in height from approximately 20 feet to 30 feet separates the lower school building, adjacent driveways, and play areas from the upper baseball fields. This slope is naturally vegetated with mature evergreen trees, deciduous trees, shrubs, and grass areas. At the time this report was prepared, this project was in the conceptual planning stage. We anticipate that the project will include the construction of one or more new school buildings near the footprint of the existing school building. We also understand the project design is considering infiltration of stormwater runoff from new impervious areas. 3.0 SUBSURFACE EXPLORATION Our field study included advancing eleven exploration borings and completing one as a groundwater monitoring well. The conclusions and recommendations presented in this report are based on the explorations completed for this study. The number, locations, and depths of the explorations were completed within site and budgetary constraints. 3.1 Exploration Borings The exploration borings were completed by advancing hollow -stem auger tools with a truck -mounted drill rig. During the drilling process, samples were obtained at generally 2%2-foot- and 5-foot-depth intervals. The exploration borings were continuously observed and logged by a representative from our firm. The exploration logs presented in Appendix A are based on the field logs, drilling action, and observation of the samples secured. Disturbed, but representative samples were obtained by using the Standard Penetration Test (SPT) procedure in accordance with American Society for Testing and Materials (ASTM) D-1586. This test and sampling method consists of driving a standard 2-inch, outside -diameter, split -barrel sampler a distance of 18 inches into the soil with a 140-pound hammer free -falling a distance of 30 inches. The number of blows for each 6-inch interval is recorded, and the number of blows required to drive the sampler the final 12 inches is known as the Standard Penetration Resistance ("N") or blow count. If a total of 50 is recorded within one 6-inch June 14, 2018; Revised February 20, 2019 ASSOCIATED EARTH SCIENCES, INC. TG/ms-180212EO01-4- Projects 120180212JKE�WP Page 2 Subsurface Exploration, Geologic Hazard, and Lake Grove Elementary School Replacement Preliminary Geotechnical Engineering Report Federal Way, Washington Project and Site Conditions interval, the blow count is recorded as the number of blows for the corresponding number of inches of penetration. The resistance, or N-value, provides a measure of the relative density of granular soils or the relative consistency of cohesive soils; these values are plotted on the attached exploration boring logs. The samples obtained from the split -barrel sampler were classified in the field and representative portions placed in watertight containers. The samples were then transported to our laboratory for further visual classification and laboratory testing, as summarized in this report. 3.2 Monitoring Well A groundwater monitoring well was installed at the project site in EB-5W to allow for documentation and monitoring of groundwater levels below the site. The wells consist of 2-inch-diameter polyvinyl chloride (PVC) Schedule-40 well casing with threaded connections. The lower 10 feet of the well is a finely slotted (0.010-inch machine slot) well screen to permit water inflow. The annular space around the well screen was backfilled with silica sand, and the upper portion of annulus was sealed with bentonite chips and grout. A steel flush mount monument was placed over the top of the wellhead for protection. The as -built configuration of the well is illustrated on the boring logs in Appendix A. Subsequent to the well installation, the well was developed and pressure transducers with automatic data loggers were installed in the well to collect water levels. The monitoring well was completed to a depth of 101 feet below the surface with the bottom 10 feet screened in Vashon advance outwash sediments. No groundwater was observed in the well at the time of drilling. 4.0 SUBSURFACE CONDITIONS Subsurface conditions at the project site were inferred from the field explorations accomplished for this study, visual reconnaissance of the site, and review of selected applicable geologic literature. Because of the nature of exploratory work below ground, extrapolation of subsurface conditions between field explorations is necessary. It should be noted that differing subsurface conditions may sometimes be present due to the random nature of deposition and the alteration of topography by past grading and/or filling. The nature and extent of any variations between the field explorations may not become fully evident until construction. The general distribution of geologic units is shown on the exploration logs. The explorations typically encountered Vashon-age native sediments consisting of dense grading to very dense lodgement till, Vashon advance outwash, or Vashon lodgement June 14, 2018; Revised February 20, 2019 ASSOCIATED EARTH SCIENCES, INC. TG/ms-180212EO01-4-ProjectsJ20180111JKEJWP Page 3 Subsurface Exploration, Geologic Hazard, and Lake Grove Elementary School Replacement Preliminary Geotechnical Engineering Report Federal Way, Washington Project and Site Conditions till/Vashon advance outwash transitional (transitional) sediment underlying existing fill soils. The existing fill extended to depths ranging from 3 feet to 18 feet below the surface. Review of a regional geologic map (Geologic Map of Poverty Bay Quadrangle 7.5', King and Pierce Counties, Washington, U.S. Geological Survey (USGS), prepared by Booth et al., 2004) indicates that the subject site is underlain by Vashon lodgement till. Our interpretation of the sediments encountered in our explorations is in partial agreement with the regional geologic mapping. The sediments encountered onsite ranged from fill over lodgement till, transitional lodgement till/advance outwash, and advance outwash. 4.1 5tratigraphy Grass/Topsoil A surficial layer of grass, organic topsoil, or both were encountered in exploration borings EB-3, EB-4, EB-9, and EB-11. This organic layer was approximately 4 to 6 inches in thickness. Observed topsoil thickness is shown on the attached subsurface exploration logs. Due to their high organic content, these materials are not considered suitable for foundation, roadway, slab -on -grade floor support, or for use in a structural fill. Fill All exploration borings completed for this study encountered existing fill soils near the surface. The existing fill soils generally consisted of loose to dense, silty, fine to medium or fine to course sand, with some gravel or medium stiff, sandy or gravelly silt. The fill generally extended to depths ranging from 3 feet to 8 feet below the surface. However, Exploration EB-2 encountered 18 feet of sediments we interpreted as existing fill. The fill sediments observed in EB-2 appeared to consist of lodgement till sediments used in a structural fill application (till fill) and were not as dense as the native lodgement till sediments found in other explorations onsite. We reviewed septic plans for the existing school from 1965, provided to us by the Project Architect, to determine why deep existing fill was encountered at the location of EB-2. These plans contain 1-foot contour lines for both the existing and proposed site elevations for the entire site. Based on our review of the plan, we were not able to determine a direct cause for the observed fill thickness, such as an old ravine, deep utility, etc. Explorations completed in the vicinity of EB-2 were EB-10 to the northeast, EB-7 to the west, and EB-6 to the south. These explorations encountered fill near the surface ranging in depth from 3 to 6 feet. Due to its similar appearance to native undisturbed lodgement till and the limited volume of sample secured by hollow -stem auger drilling, it can be difficult to distinguish till fill from undisturbed native lodgement till. Once the building and existing June 14, 2018; Revised February 20, 2019 ASSOCIATED EARTH SCIENCES, INC. TG/ms-180212EO01-4-Projec;1201802121KEIWP Page 4 Subsurface Exploration, Geologic Hazard, and Lake Grove Elementary School Replacement Preliminary Geotechnical Engineering Report Federal Way, Washington Project and Site Conditions pavement is demolished, we are available to observe the exposed soils in the vicinity of EB-2 to help determine the vertical and horizontal extent of existing fill soils. Existing fill is not considered suitable for foundation support and may require mitigation for pavement, or slab -on -grade floor support. Excavated existing fill material is suitable for reuse in structural fill applications, if such reuse is specifically allowed by project plans and specifications, if excessively organic and any other deleterious materials are removed, and if moisture content is adjusted to allow compaction to the specified level and to a firm and unyielding condition. Based on our explorations completed for this, study, we estimate the observed existing fill was above optimum moisture content for compaction purposes, and therefore may require drying during favorable weather prior to compaction in structural fill applications. Existing fill is not considered suitable for infiltration of stormwater runoff due to its high variability. Vashon Lodgement Till Natural sediments encountered below the fill in explorations EB-1, EB-4, EB-5W, EB-6, EB-7, EB-8; E13-9; and EB-11 generally consisted of very dense; unsorted, non -stratified, silty fine to medium sand with some gravel. We interpret these sediments to be representative of Vashon lodgement till. Where our explorations fully penetrated the till, we encountered till thicknesses that ranged between 5 and 13 feet. Exploration EB-9 encountered 16 feet of lodgement till before it was terminated within the till. Lodgement till was deposited at the base of an active ice sheet and was subsequently compacted by the weight of the overlying glacial ice. Lodgement till typically possesses high -strength and low -compressibility attributes that are favorable for support of foundations, floor slabs, and paving with proper preparation. Excavated lodgement till sediments are suitable for reuse in structural fill applications if specifically allowed by project specifications, and if moisture conditions are adjusted to allow compaction to a firm and unyielding condition at the time of construction. Portions of the lodgement till sediments encountered in our borings were above the optimum for achieving suitable compaction If the moisture content of these sediments is elevated at the time of construction, moisture conditioning of the till could be achieved by spreading out the soil proposed for use as structural fill and aerating it during favorable dry site and weather conditions. Vashon lodgement till is generally considered unsuitable for infiltration of stormwater runoff due to its high fine-grained content and low permeability. Due to the relatively high density and silt content, we anticipate these sediments to be a poor receptor for stormwater infiltration. Vashon Lodgement Till/Vashon Advance Outwash Transitional Sediments underlying the Vashon lodgement till in exploration EB-1, EB-5W, EB-7, and EB-8, and underlying the fill soils in exploration EB-3 and EB-10, generally consisted of fine to coarse June 14, 2018; Revised February 20, 2019 ASSOCIATED EARTH SCIENCES, INC. TG/ms-180212EO01-4-Projects 1201802121KEIWP Page 5 Subsurface Exploration, Geologic Hazard, and Lake Grove Elementary School Replacement Preliminary Geotechnical Engineering Report Federal Way, Washington Project and Site Conditions sand with a fines content that ranged from some silt to silty. These sediments have a higher silt content than the encountered Vashon advance outwash, contain a higher coarse -grained sand content then the encountered Vashon lodgement till, and range from till -like diamict to somewhat stratified. We interpreted these sediments as a transitional unit with a grain size somewhere between the typical lodgement till and advance outwash sediments. These sediments are suitable for structural support when properly prepared and were encountered above optimum moisture content for compaction purposes. Excavated transitional sediments are suitable for reuse in structural fill applications if specifically allowed by project specifications, and if moisture conditions are adjusted to allow compaction to a firm and unyielding condition at the time of construction. Vashon Advance Outwash Underlying existing fill soils in explorations EB-2, transitional sediments in EB-3, EB-5W, and EB-10, and lodgement till in exploration EB-4, we encountered sediments interpreted as Vashon advance outwash. These sediments generally consisted of dense to very dense, stratified sand with trace to some silt and trace gravel. These sediments were encountered at depths ranging from 8 feet to 43 feet below the surface and extended beyond the depths explored where encountered. Advance outwash was deposited by meltwater streams from an advancing ice sheet. When properly prepared, these sediments are suitable for foundation support. Excavated advance outwash is suitable for reuse in structural fill applications if specifically allowed by project specifications, and provided it is at or near optimum moisture content. Where permeable and unsaturated, these sediments are a potentially suitable stormwater infiltration receptor. 4.2 Hydrofogy Groundwater was observed in exploration EB-9 at a depth of 5 feet below the surface. We interpret this shallow groundwater as perched groundwater. Perched groundwater occurs when surface water infiltrates down through relatively permeable soils, such as fill, or weathered sediments, and becomes trapped or "perched" atop a comparatively very low -permeability barrier, such as silty unweathered lodgement till. This water may travel laterally and typically will follow the ground surface topography. The regional groundwater table was not encountered. The Vashon advance outwash was unsaturated to the maximum depth explored of 101 feet (EB-5W). Groundwater conditions, including depth and duration and quantity of seepage should be expected to vary seasonally, and in response to changes in precipitation, soil grain -size distribution, topography, on- and off -site land usage, and other factors. June 14, 2018; Revised February 20, 2019 ASSOCIATED EARTH SCIENCES, INC. TG/ms-180212E001-4- Projects 120180212�KE�WP Page 6 Subsurface Exploration, Geologic Hazard, and Lake Grove Elementary School Replacement Preliminary Geotechnical Engineering Report Federal Way, Washington Project and Site Conditions 4.3 Laboratory Test Results Nine laboratory grain -size (sieve) analyses were performed by AESI's in-house laboratory on representative selected samples collected from the exploration borings completed for this study. Three tests samples were collected from the transitional Vashon lodgement till/Vashon advance outwash sediments, and six test samples were collected from Vashon advance outwash. The grain -size analyses test results are presented in Appendix B. June 14, 2018, Revised February 20, 2019 ASSOCIATED EARTH SCIENCES, INC. TG/ms-180212E001-4-Projec J20180212JKEJWP Page 7 Subsurface Exploration, Geologic Hazard, and Lake Grove Elementary School Preliminary Geotechnical Engineering Report Federal Way, Washington Geologic Hazards and Mitigations II. GEOLOGIC HAZARDS AND MITIGATIONS The following discussion of potential geologic hazards is based on the geologic, slope, and shallow groundwater conditions as observed and discussed herein. 5.0 LANDSLIDE HAZARDS AND MITIGATIONS Federal Way Revised Code (FWRC) Section 19.05.070 defines Landslide Hazard Areas (LHA). A west -facing slope ranging in height from approximately 20 feet to 30 feet that separates the lower school building from the upper baseball fields and portions of this slope exceed inclinations of 40 percent based on our review of the AHBL topographic survey. The portions of the slope configurations that achieve both the minimum inclination of 40 percent and the minimum height of 10 feet are classified as a LHA. For protection from LHAs the FWRC Section 19.145.230 requires a standard buffer of 50 feet from the top and toe of the LHA, which can be reduced with further geotechnical study. We are available to address buffer reductions once a site plan has been formulated, if they are required for site layout. 6.0 SEISMIC HAZARDS AND MITIGATIONS Earthquakes occur regularly in the Puget Lowland. Most of these events are small and are not felt by people. However, large earthquakes do occur, as evidenced by the 2001, 6.8-magnitude event; the 1965, 6.5-magnitude event; and the 1949, 7.2-magnitude event. The 1949 earthquake appears to have been the largest in this region during recorded history and was centered in the Olympia area. Evaluation of earthquake return rates indicates that an earthquake of the magnitude between 5.5 and 6.0 is likely within a given 20-year period. Generally, there are four types of potential geologic hazards associated with large seismic events: 1) surficial ground rupture, 2) seismically induced landslides, 3) liquefaction, and 4) ground motion. The potential for each of these hazards to adversely impact the proposed project is discussed below. 6.1 5ur€icial Ground Rupture The project area is located approximately 15 miles south of the Seattle Fault Zone and within the mapped limits of the Tacoma Fault Zone. Our current understanding of the Seattle Fault suggests that several fault traces are spread across a relatively wide zone. Recent studies by the USGS (e.g., Johnson et al., 1994, Origin and Evolution of the Seattle Fault and Seattle Basin, Washington, Geology, v. 22, p. 71-74 and Johnson et al., 1999, Active Tectonics of the June 14, 2018; Revised February 20, 2019 ASSOCIATED EARTH SCIENCES, INC. TG/ms-180212E001-4-Projects �20180212JKEJWP Page 8 Subsurface Exploration, Geologic Hazard, and Lake Grove Elementary School Preliminary Geotechnical Engineering Report Federal Way, Washington Geologic Hazards and Mitigations Seattle Fault and Central Puget Sound Washington - Implications for Earthquake Hazards, Geological Society of America Bulletin, July 1999, v. 111, n. 7, p. 1042-1053) have provided evidence of surficial ground rupture along a northern splay of the Seattle Fault. The recognition of this fault is relatively new, and data pertaining to it are limited, with the studies still ongoing. According to the USGS studies, the latest movement of this fault was about 1,100 years ago when about 20 feet of surficial displacement took place. This displacement can presently be seen in the form of raised, wave -cut beach terraces along Alki Point in West Seattle and Restoration Point at the south end of Bainbridge Island. The recurrence interval of movement along this fault system is still unknown, although it is hypothesized to be in excess of several thousand years. Geophysical surveys of the Puget Lowland in 1998 suggested the presence of a fault zone along the north side of the Tacoma basin generally between Tacoma and the south end of Hood Canal (Upper Crustal Structure in the Puget Lowland, Washington: Results from 1998 Seismic Hazards Investigation in Puget Sound, Journal of Geophysical research, v. 106, p. 13,541-13,564, by T.M. Brocher, T. Parsons, R.A. Blakely, N.I. Christiansen, M.A. Fisher, R.E. Wells, and SHIPS Working Group, 2001). More recent studies by the USGS have provided evidence of surficial ground runture along the Tacoma Fault near Burly; Washington (The Catfish Lake Scarp, Allyn, Washington: Preliminary Field Data and Implications for Earthquake Hazards Posed by The Tacoma Fault, USGS Open -File Report 03-455, by B.L. Sherrod, A.R. Nelson, H.M. Kelsey, T.M. Brocher, R.J. Blakely, C.S. Weaver, N.K. Rountree, S.B. Rhea, and B.S. Jackson, 2003). The recognition of this fault is relatively new, and data pertaining to it is limited, with studies still ongoing. According to the USGS studies, the latest movement of this fault was about 1,100 years ago when several meters of surficial displacement took place. This displacement can presently be seen in the form of raised tidal flats in the Burly Lagoon, Lynch Bay, and North Cove, resulting in the present day freshwater marshes and forested lowlands. Further evidence of the faulting activity in this system has been seen at Wollochet Bay, where forested areas were inundated by water. Additionally, linear fault scarp features in the ground surface were exposed in recent Light Detection and Ranging (LIDAR) maps. The scarp features are located near Allyn, Washington, and have been described as trending parallel to the Tacoma Fault system. Studies also point to the fault system continuing across the Puget Sound, and it is inferred as continuing through Commencement Bay and the Puyallup River Delta. The slip rate along the Tacoma Fault is thought to be approximately 2 millimeters per year. However, very little is known about the recurrence interval of earthquakes along the Tacoma Fault. Related fault systems in the Puget Sound region have been hypothesized to have reoccurrence intervals in excess of several thousand years. Due to the suspected long recurrence interval, the potential for surficial ground rupture is considered to be low during the expected life of the proposed development. No mitigation efforts beyond complying with the requirements of the local jurisdictions and the 2015 International Building Code (IBC) are recommended for this site. June 14, 2018; Revised February 20, 2019 ASSOCIATED EARTH SCIENCES, INC. TG/ms-180212EO01-4-Projects �20180212JKEJWP Page 9 Subsurface Exploration, Geologic Hazard, and Lake Grove Elementary School Preliminary Geotechnical Engineering Report Federal Way, Washington Geologic Hazards and Mitigations 6.2 Seismically Induced Landslides It is our opinion that the risk of damage to the proposed structures by seismically induced landsliding during a design -level seismic event is low. No quantitative slope stability analysis was completed, and none is warranted for the project as currently proposed, in our opinion. 6.3 Liquefaction Liquefaction is a temporary loss in soil shear strength that can occur when loose granular soils below the groundwater table are exposed to cyclic accelerations, such as those that occur during earthquakes. The observed site soils were relatively dense and unsaturated and are not expected to be prone to liquefaction. A detailed liquefaction hazard analysis was not performed as part of this study, and none is warranted, in our opinion. 6.4 Seismic Site Class 2015 International Building Code In our opinion, the subsurface conditions at the site are consistent with seismic Site Class "D" in accordance with the 2015 IBC, and the publication ASCE 7 referenced therein, the most recent version of which is ASCE 7-10. 7.0 EROSION CONTROL The definition for Erosion Hazard Area is provided in Section 19.05.070(1) of the FWRC and is provided below. "Erosion hazard areas" are those areas identified by the U.S. Department of Agriculture's (USDA) Natural Resource Conservation Service (NRCS) as having a moderate to severe or severe to very severe rill and inter -rill erosion hazard due to natural agents such as wind, rain, splash, frost action or stream flow; those areas containing the following group of soils when they occur on slopes of 15 percent or greater. Alderwood-Kitsap ("AkF"), Alderwood gravelly sandy loam ("AgD"), Kitsap silt loam ("KpD"), Everett ("EvD"), and Indianola ("InD"); and those areas impacted by shore land and/or stream bank erosion. Review of the NRCS soil survey indicates that the majority of the site consists of Alderwood gravelly sandy loam, 0 to 8 percent slopes. The Alderwood soil series forms from the weathering of glacial till, somewhat consistent with soils encountered in several of our explorations. Slopes do exist east of the existing school building that are up to 40-percent inclination, and therefore meet the requirement of an erosion hazard area. We have provided erosion mitigation recommendations in the following section. It is our opinion that if the recommendations provided in this report are followed: June 14, 2018,Revised February 20, 2019 ASSOCIATED EARTH SCIENCES, INC. TG/ms-180212EO01-4-Projects 120180212JKE�WP Page 10 Subsurface Exploration, Geologic Hazard, and Lake Grove Elementary School Preliminary Geotechnical Engineering Report Federal Way, Washington Geologic Hazards and Mitigations The project will not increase surface water discharge or sedimentation to adjacent properties or stormwater systems beyond predevelopment conditions, • The improvement will not decrease slope stability on adjacent properties, and e The improvement will not adversely impact other critical areas. In order to reduce the amount of sediment transported off the site during construction, the following recommendations should be followed. ■ Silt fencing should be placed around the lower perimeter of all cleared area(s). The fencing should be periodically inspected and maintained as necessary to ensure proper function. To the extent possible, earthwork -related construction should proceed during the drier periods of the year and disturbed areas should be revegetated as soon as possible. Temporary erosion control measures should be maintained until permanent erosion rrn+rel me�crec are established a.viu va.uaua..a ua. a..aau v�1-1 -a.. ® Areas stripped of vegetation during construction should be mulched and hydroseeded, replanted as soon as possible, or otherwise protected. During winter construction, hydroseeded areas should be covered with clear plastic to facilitate grass growth. ■ If excavated soils are to be stockpiled on the site for reuse, measures should be taken to reduce the potential for erosion from the stockpile. These could include, but are not limited to, covering the pile with plastic sheeting, the use of low stockpiles in flat areas, and the use of straw bales/silt fences around pile perimeters. m Interceptor swales with rock check dams should be constructed to divert stormwater from construction areas and to route collected stormwater to an appropriate discharge location. ® A rock construction entrance should be provided to reduce the amount of sediment transported off -site on truck tires. a All stormwater from impermeable surfaces, including driveways and roofs, should be tight -lined into approved facilities and not be directed onto or above steeply sloping areas. ® Sediment track -out onto City streets shall be avoided. June 14, 2018,Revised February 20, 2019 ASSOCIATED EARTH SCIENCES, INC. TG/ms-180212E001-0-Pro%ectrJ10180112�KEJWP Page 11 Subsurface Exploration, Geologic Hazard, and Lake Grove Elementary School Preliminary Geotechnical Engineering Report Federal Way, Washington Preliminary Design Recommendations III. PRELIMINARY DESIGN RECOMMENDATIONS 8.0 INTRODUCTION Our explorations indicate that, from a geotechnical engineering standpoint, the proposed project is feasible provided the recommendations contained herein are properly followed. Our explorations generally encountered dense to very dense glacial sediments underlying existing fill soils. Existing fill up to 18 feet deep was encountered in exploration EB-2. Other portions of the site that we explored also encountered surficial fill soils with depths ranging from 3 feet to 8 feet below the surface. Existing fill soils will require mitigation under areas of new foundations. Mitigation options will depend on the thickness of the existing fill soils and include removal and replacement with structural fill or a deep foundation system that fully penetrates the existing fill soils. Existing fill will require remedial preparation prior to constructing new roads and parking lots. The following report sections provide additional recommendations regarding site preparation, structural fill, grading, foundations, floor support, drainage, and pavement recommendations. Infiltration is potentially feasible within the transitional and advance outwash sediments, where they are encountered as permeable and unsaturated. Based on the grain -size analysis and fines content of these sediments, the advance outwash sediments provide the best potential for infiltration when compared to the transitional sediments. Vashon advance outwash was encountered underlying the surficial fill soils, Vashon lodgement till, in the vicinity of proposed stormwater facilities identified by the Project Civil Engineer (EB-4 and EB-5W). Moderate to deep infiltration methods will be necessary in order to convey stormwater to the targeted receptor horizon. Due to the presence of soils considered not suitable for use as an infiltration receptor such as fill and lodgment till, shallow infiltration methods are considered infeasible. 9.0 SITE PREPARATION Site preparation of building and paving areas should include removal of all grass, trees, brush, debris, and any other deleterious materials. All existing fill beneath planned foundation areas should be removed, unless a deep foundation system or ground improvement methods are proposed. Buried utilities should be removed from planned foundation areas, and should be abandoned in place or removed from below planned new paving. Any depressions below - planned final grades caused by demolition activities should be backfilled with structural fill or controlled density fill (CDF) depending on the bearing pressures required for foundations. June 14, 2018; Revised February 20, 2019 ASSOCIATED EARTH SCIENCES, INC. TG/ms-180212EO01-4- Projects 1201802121KEIWP Page 12 Subsurface Exploration, Geologic Hazard, and Lake Grove Elementary School Preliminary Geotechnical Engineering Report Federal Way, Washington Preliminary Design Recommendations Existing topsoil should be stripped from structural areas. The actual observed in -place depth of grass and topsoil at the exploration locations is presented on the exploration logs in Appendix A. After stripping, remaining roots and stumps should be removed from structural areas. All soils disturbed by stripping and grubbing operations should be recompacted as described below for structural fill. Once excavation to subgrade elevation is complete, the resulting surface should be proof -rolled with a loaded dump truck or other suitable equipment. Any soft, loose, yielding areas or areas exposing excessively organic material should be excavated to exposed suitable bearing soils. The subgrade should then be compacted to at least 95 percent of the modified Proctor maximum dry density, as determined by the ASTM D-1557 test procedure. Structural fill can then be placed to achieve desired grades, if needed. 9.1 Temporary Cut Slopes In our opinion, stable construction slopes should be the responsibility of the contractor and should be determined during construction. For estimating purposes, however, temporary, unsupported cut slopes can be planned at 1.5H:1V (Horizontal:Vertical) in unsaturated existing fill, weathered glacial till, the transitional sediments, or advance outwash. Temporary slopes of 1H:1V can be planned in unsaturated, unweathered lodgement till. These slope angles are for areas where groundwater seepage is not present at the faces of the slopes. If ground or surface water is present when the temporary excavation slopes are exposed, flatter slope angles may be required. As is typical with earthwork operations, some sloughing and raveling may occur, and cut slopes may have to be adjusted in the field. In addition, WISHA/OSHA regulations should be followed at all times. 9.2 Site Drainage and Surface Water Control The site should be graded to prevent water from ponding in construction areas and/or flowing into excavations. Exposed grades should be crowned, sloped, and smooth drum -rolled at the end of each day to facilitate drainage. Accumulated water must be removed from subgrades and work areas immediately prior to performing further work in the area. Equipment access may be limited, and the amount of soil rendered unfit for use as structural fill may be greatly increased if drainage efforts are not accomplished in a timely sequence. If an effective drainage system is not utilized, project delays and increased costs could be incurred due to the greater quantities of wet and unsuitable fill, or poor access and unstable conditions. During construction, surface water should be routed away from the site slopes and conveyed to an appropriate discharge location. At no time should uncontrolled surface water flow onto the site slopes. June 14, 2018,Revised February 20, 2019 ASSOCIATED EARTH SCIENCES, INC. TG/ms-180111E001-4-Projects110180112IKEIWP Page 13 Subsurface Exploration, Geologic Hazard, and Lake Grove Elementary School Preliminary Geotechnical Engineering Report Federal Way, Washington Preliminary Design Recommendations Final exterior grades should promote free and positive drainage away from the proposed new building at all times. Water must not be allowed to pond or to collect adjacent to foundations or within the immediate building area. We recommend that a gradient of at least 3 percent for a minimum distance of 10 feet from the building perimeters be provided, except in paved locations. In paved locations, a minimum gradient of 1 percent should be provided, unless provisions are included for collection and disposal of surface water adjacent to the additions. 9.3 Site Disturbance Most of the on -site soils contain fine-grained material, which makes them moisture -sensitive and subject to disturbance when wet. The contractor must use care during site preparation and excavation operations so that the underlying soils are not softened. If disturbance occurs, the softened soils should be removed and the area brought to grade with structural fill. 9.4 Winter Construction The existing fill material and lodgement till contain substantial silt and are considered highly moisture -sensitive. Soils excavated onsite will likely require drying during favorable dry weather conditions to allow their reuse in structural fill applications. Care should be taken to seal all earthwork areas during mass grading at the end of each workday by grading all surfaces to drain and sealing them with a smooth -drum roller. Stockpiled soils that will be reused in structural fill applications should be covered whenever rain is possible. If winter construction is expected, crushed rock fill should be used to provide construction staging areas where exposed soil is present. The stripped subgrade should be observed by the geotechnical engineer, and should then be covered with a geotextile fabric, such as Mirafi 50OX or equivalent. Once the fabric is placed, we recommend using a crushed rock fill layer at least 10 inches thick in areas where construction equipment will be used. Soil cement treatment is another approach to providing a workable site during the winter. We are available to provide a more detailed cement -treatment plan on request, and if allowed by the governing jurisdiction. 9.5 Frozen Subarades If earthwork takes place during freezing conditions, all exposed subgrades should be allowed to thaw, and then be recompacted prior to placing subsequent lifts of structural fill or foundation components. Alternatively, the frozen material could be stripped from the subgrade to reveal unfrozen soil prior to placing subsequent lifts of fill or foundation components. The frozen soil should not be reused as structural fill until allowed to thaw and adjusted to the proper moisture content, which may not be possible during winter months. June 14, 2018, Revised February 20, 2019 ASSOCIATED EARTH SCIENCES, INC. TG/ms-180212E001-4-Projects 20180212�KEJWP Page 14 Subsurface Exploration, Geologic Hazard, and Lake Grove Elementary School Preliminary Geotechnical Engineering Report Federal Way, Washington Preliminary Design Recommendations 10.0 STRUCTURAL FILL All references to structural fill in this report refer to subgrade preparation, fill type, placement, and compaction of materials, as discussed in this section. If a percentage of compaction is specified under another section of this report, the value given in that section should be used. For backfill of buried utilities in the right-of-way, the backfill should be placed and compacted in accordance with the City of Federal Way codes and standards. After stripping, planned excavation, and any required overexcavation have been performed to the satisfaction of the geotechnical engineer/engineering geologist, the surface of the exposed ground should be recompacted to a firm and unyielding condition. If the subgrade contains too much moisture, adequate recompaction may be difficult or impossible to obtain, and should probably not be attempted. In lieu of recompaction, the area to receive fill should be blanketed with washed rock or quarry spalls to act as a capillary break between the new fill and the wet subgrade. Where the exposed ground remains soft and further overexcavation is impractical, placement of an engineering stabilization fabric may be necessary to prevent contamination of the free -draining layer by silt migration from below. After recompaction of the exposed ground is tested and approved, or a free -draining rock course is laid, structural fill may be placed to attain desired grades. Structural fill is defined as non -organic soil, acceptable to the geotechnical engineer, placed in maximum 8-inch loose lifts, with each lift being compacted to 95 percent of ASTM D-1557. The top of the compacted fill should extend horizontally outward a minimum distance of 3 feet beyond the locations of the perimeter footings or roadway edges before sloping down at a maximum angle of 2H:1V. The contractor should note that any proposed fill soils should be evaluated by AESI prior to their use in fills. This would require that we have a sample of the material at least 72 hours in advance to perform a Proctor test and determine its field compaction standard. Soils in which the amount of fine-grained material (smaller than the No. 200 sieve) is greater than approximately 5 percent (measured on the minus No. 4 sieve size) should be considered moisture -sensitive. The existing fill and native soils encountered at the project site contain substantially more than 5 percent fine-grained material. Use of moisture -sensitive soil in structural fills should be limited to favorable dry weather and dry subgrade conditions. Construction equipment traversing the site when the soils are wet can cause considerable disturbance. If fill is placed during wet weather or if proper compaction cannot be obtained, a select import material consisting of a clean, free -draining gravel and/or sand should be used. Free -draining fill consists of non -organic soil, with the amount of fine-grained material limited to 5 percent by weight when measured on the minus No. 4 sieve fraction, and at least 25 percent retained on the No. 4 sieve. June 14, 2018; Revised February 20, 2019 ASSOCIATED EARTH SCIENCES, INC. TG/ms-180212EO01-4-Projects 120180112JKEIWP Page 15 Subsurface Exploration, Geologic Hazard, and Lake Grove Elementary School Preliminary Geotechnical Engineering Report Federal Way, Washington Preliminary Design Recommendations A representative from our firm should observe the stripped subgrade and be present during placement of structural fill to observe the work and perform a representative number of in -place density tests. In this way, the adequacy of the earthwork may be evaluated as filling progresses, and any problem areas may be corrected at that time. It is important to understand that taking random compaction tests on a part-time basis will not assure uniformity or acceptable performance of a fill. As such, we are available to aid the Client in developing a suitable monitoring and testing program. 11.0 FOUNDATIONS Our explorations generally encountered existing fill soils overlying dense glacial, native sediments in the vicinity of the existing school building. The existing fill extended to depths that ranged from a few feet up to 18 feet below the surface. Conventional spread footings may be used in areas where relatively shallow depths of fill soils were encountered. In areas where thicker fills are present, it may be more economical to support new foundations on a deeper foundation system. We have provided several foundation options below. Once a building layout has been finalized, we recommend that we are able to review the layout and update our recommendations or complete more explorations to determine suitable foundation type, if necessary. 11.1 Spread Footings Conventional spread footings and column pads may be used for building support when founded either directly on the undisturbed, dense to very dense native sediments or on new structural fill placed above the suitable native deposits. We recommend that an allowable foundation soil bearing pressure of 3,500 pounds per square foot (psf) be utilized for design purposes, including both dead and live loads. If foundations are underlain by very dense lodgement till or Vashon advance outwash alone, or these native sediments and CDF, an allowable foundation soil bearing pressure of 5,000 psf should be used for design. An increase of one-third may be used for short-term wind or seismic loading. Foundation areas should be deepened, if necessary, to expose sediments suitable for the support of the recommended bearing pressures. An increase of one-third may be used for short-term wind or seismic loading. It should be noted that the area bounded by lines extending downward at 1H:1V from any footing must not intersect another footing or filled area. In addition, a 1.5H:1V line extending down from any footing must not daylight because sloughing or raveling may eventually undermine the footing. Thus, footings should not be placed near the edge of steps or cuts in the bearing soils. June 14, 2018; Revised February 20, 2019 ASSOCIATED EARTH SCIENCES, INC. TG/ms-180212EO01-4- Projects 120180212�KEJWP Page 16 Subsurface Exploration, Geologic Hazard, and Lake Grove Elementary School Preliminary Geotechnical Engineering Report Federal Way, Washington Preliminary Design Recommendations Perimeter footings should be buried at least 18 inches into the surrounding soil for frost protection. However, all footings must penetrate to the prescribed bearing stratum, and no footing should be founded in or above organic or loose soils. Anticipated settlement of footings founded as recommended should be less than 1 inch with differential settlement one-half of the anticipated total settlement. Most of this movement should occur during initial dead load applications. However, disturbed soil not removed from footing or mat excavations prior to concrete placement could result in increased settlements. All footing areas should be observed by AESI prior to placing concrete to verify that the design bearing capacity of the soils has been attained and that construction conforms to the recommendations contained in this report. Such observation may be required by the City of Federal Way. A perimeter foundation drain system should be provided as discussed under the "Drainage Considerations" section of this report. The contractor must use care during site preparation and excavation operations so that the underlying soils are not softened. If disturbance occurs, the softened soils should be removed and foundations extended down to competent natural soil. Once the base of the excavation is reached, consideration should be given to "armoring" the exposed subgrade with a thin laver of rock to provide a working surface during foundation construction. We recommend a 6-inch layer of crushed rock for this purpose. 11.2 Rock -Filled Trenches Proposed foundations can be supported on rock -filled trenches excavated through the unsuitable soils to expose suitable native soils. Rock -filled trenches below foundations should extend laterally beyond all foundation elements by at least 1 foot, and should have a minimum width of 4 feet. All rock trenches should be excavated down to expose underlying, dense native sediments. Because of the potential for caving, the actual trench width may be greater than specified. After the bearing stratum has been reached, the trench should be immediately backfilled. We recommend the use of "railroad ballast" or 2- to 4-inch-size crushed rock for backfill. The crushed rock must be tamped into place to achieve a tightly packed mass; this may be done with either a "Hoepac"-type compactor mounted on the backhoe, or more typically, with the bucket of the backhoe itself. Once the foundation subgrade is achieved, a shallow foundation can be prepared as described above. 11.3 Stone Columns Stone columns consist of columns of compacted crushed rock below the building pad. Installation of stone columns results in significant densification of the surrounding soils, as well June 14, 2018,Revised February 20, 2019 ASSOCIATED EARTH SCIENCES, INC. TG/ms-180212EO01-4-ProjedsJ20180212�KEJWP Page 17 Subsurface Exploration, Geologic Hazard, and Lake Grove Elementary School Preliminary Geotechnical Engineering Report Federal Way, Washington Preliminary Design Recommendations as a network of compacted stone columns that transmit loads directly to more competent soils at depth. There is little consistency between different contractors who install stone columns with respect to their installation equipment and methods. The diameters, depth capability, compactive energy, and other critical factors of each contractor's equipment must be considered when designing a stone column foundation system, and therefore such systems are typically designed by the contractor who installs them. Once stone columns are installed, the building is constructed with a conventional shallow foundation system above a subgrade that has been improved through installation of stone columns. In our opinion, using a system of stone columns, it would be possible to achieve an allowable foundation soil bearing pressure of 5,000 psf. :11.4 Drainage Considerations Foundations should be provided with foundation drains. Drains should consist of rigid, perforated PVC pipe surrounded by washed pea gravel. The drains should be constructed with sufficient gradient to allow gravity discharge away from the proposed building. Roof and surface runoff should not discharge into the footing drain system, but should be handled by a separate, rigid, tightline drain. In planning, exterior grades adjacent to walls should be sloped downward away from the proposed building to achieve surface drainage. 12.0 FLOOR SUPPORT Floor slabs can be supported on dense to very dense native soils, on new structural fill placed above native sediments, or on a minimum of 2 feet of new structural fill where existing fill soils are encountered. Floor slabs should be cast atop a minimum of 4 inches of clean, washed, crushed rock or pea gravel to act as a capillary break. Areas of subgrade that are disturbed (loosened) during construction should be compacted to a non -yielding condition prior to placement of capillary break material. Floor slabs should also be protected from dampness by an impervious moisture barrier at least 10 mils thick. The moisture barrier should be placed between the capillary break material and the concrete slab. 13.0 FOUNDATION WALLS The following preliminary recommendations may be applied to conventional walls up to 8 feet tall. We should be allowed to offer situation -specific input for taller walls. All backfill behind foundation walls or around foundation units should be placed as per our recommendations for structural fill and as described in this section of the report. Horizontally backfilled walls, which are free to yield laterally at least 0.1 percent of their height, may be designed to resist lateral earth pressure represented by an equivalent fluid equal to 35 pounds per cubic foot (pcf). Fully June 14, 2018; Revised February 20, 2019 ASSOCIATED EARTH SCIENCES, INC. TG/ms-180212EO01-4-Projects 1201802121KEIWP Page 18 Subsurface Exploration, Geologic Hazard, and Lake Grove Elementary School Preliminary Geotechnical Engineering Report Federal Way, Washington Preliminary Design Recommendations restrained, horizontally backfilled, rigid walls that cannot yield should be designed for an equivalent fluid of 50 pcf. Walls with sloping backfill up to a maximum gradient of 2H:1V should be designed using an equivalent fluid of 55 pcf for yielding conditions or 75 pcf for fully restrained conditions. If parking areas are adjacent to walls, a surcharge equivalent to 2 feet of soil should be added to the wall height in determining lateral design forces. As required by the 2015 IBC, retaining wall design should include a seismic surcharge pressure in addition to the equivalent fluid pressures presented above. Considering the site soils and the recommended wall backfill materials, we recommend a seismic surcharge pressure of 5H and 10H psf, where H is the wall height in feet for the "active" and "at -rest" loading conditions, respectively. The seismic surcharge should be modeled as a rectangular distribution with the resultant applied at the midpoint of the walls. The lateral pressures presented above are based on the conditions of a uniform backfill consisting of excavated on -site soils, or imported structural fill compacted to 90 percent of ASTM D-1557. A higher degree of compaction is not recommended, as this will increase the pressure acting on the walls. A lower compaction may result in settlement of the slab -on -grade or other structures supported above the walls. Thus, the compaction level is critical and must be tested by our firm during placement. Surcharges from adjacent footings or heavy construction equipment must be added to the above values. Perimeter footing drains should be provided for all retaining walls, as discussed under the "Drainage Considerations" section of this report. It is imperative that proper drainage be provided so that hydrostatic pressures do not develop against the walls. This would involve installation of a minimum 1-foot-wide blanket drain to within 1 foot of finish grade for the full wall height using imported, washed gravel against the walls. 13.1 Passive Resistance and Friction Factors Lateral loads can be resisted by friction between the foundation and the natural soils or supporting structural fill soils, and by passive earth pressure acting on the buried portions of the foundations. The foundations must be backfilled with structural fill and compacted to at least 95 percent of the maximum dry density to achieve the passive resistance provided below. We recommend the following allowable design parameters: e Passive equivalent fluid = 250 pcf ® Coefficient of friction = 0.35 June 14, 2018; Revised February 20, 2019 ASSOCIATED EARTH SCIENCES, INC. TG/ms-180212ED01-0- Projects 120180212�KEJWP Page 19 Subsurface Exploration, Geologic Hazard, and Lake Grove Elementary School Preliminary Geotechnical Engineering Report Federal Way, Washington Preliminary Design Recommendations 14.0 INFILTRATION FEASIBILITY Generally, our explorations encountered either Vashon lodgement till, Vashon advance outwash or Vashon lodgement till/Vashon advance outwash transitional sediments underlying existing fill. The existing fill soils extended to depths ranging from 3 feet to 18 feet below the surface. Existing fill soils are not considered suitable for use as an infiltration receptor due to their variability. Vashon lodgement till is also considered not suitable for use as an infiltration receptor due to its high fine-grained content and low permeability. Infiltration is potentially feasible within the transitional or advance outwash sediments, where they are encountered as permeable and unsaturated. Based on the grain -size analysis and fines content of these sediments, the advance outwash sediments provide the best potential for infiltration when compared to the transitional sediments. Vashon advance outwash was encountered at depths ranging from 13 feet to 43 feet below the surface. Explorations EB-4, EB-5W, EB-9, and EB-11 were completed at the preliminary location of proposed infiltration facilities. The infiltration facility locations were provided to AESI on a sketch prepared by the Project Civil Engineer and provided in Appendix C. Of these explorations, EB-4 and EB-5W encountered permeable unsaturated sediments favorable for infiltration. The Vashon advance outwash was encountered at depths of 13 feet and 33 feet below the surface in EB-3 and EB-4W, respectively, and extended beyond the depths explored in both explorations. No groundwater was observed in either exploration. Explorations EB-9 and EB-11 were completed to depths of 21 feet and 16 feet below the surface, respectively, and both encountered relatively impermeable Vashon lodgement till. Due to the depth below existing grade where the advance outwash has been observed and inferred, it appears likely that a deeper infiltration strategy would be required to utilize the advance outwash receptor. Alternatives such as Underground Injection Control (UIC) wells would likely work well, and other strategies such as open -bottomed stormwater vaults with pit drains below may be feasible below some portions of the site. We are working concurrently on an infiltration testing and feasibility study for a proposed infiltration vault. Results of this study would be provided in a forthcoming report. 15.0 PAVEMENT RECOMMENDATIONS We anticipate that the project will include construction of new paved surfaces, including parking lots, access drives, and a bus loop. At this time, we do not anticipate that new paving will be completed on public streets. If new paving is planned on public streets, we should be allowed to make situation -specific paving recommendations. June 14, 2018; Revised February 20, 2019 ASSOCIATED EARTH SCIENCES, INC. TG/ms-180212EO01-4-Projects 120180212�KE�WP Page 20 Subsurface Exploration, Geologic Hazard, and Lake Grove Elementary School Preliminary Geotechnical Engineering Report Federal Way, Washington Preliminary Design Recommendations After the area to be paved is stripped, any organic soils are removed, and the soils are recompacted, the area should be proof -rolled with a loaded truck under the observation of AESI. Any soft, wet, organic, or yielding areas should be repaired as recommended during construction. If warranted, engineering stabilization fabric, such as Mirafi 50OX (or equivalent), should be placed over the subgrade with the edges overlapped in accordance with the manufacturer's recommendations. Following subgrade preparation, clean, free -draining structural fill should be placed over the fabric and compacted to 95 percent of ASTM D-1557. Where fabric is exposed, spreading should be performed such that the dozer remains on the fill material and is not allowed to operate on uncovered fabric. When 12 inches of fill has been placed, the fabric should be proof -rolled with a loaded dump truck to pretension the fabric and identify soft spots in the fill. Upon completing the proof rolling operation, additional structural fill should be placed and compacted to attain desired grades. For driveways and private paving serving passenger cars, we recommend a paving section consisting of 3 inches of Class %:-inch Hot Mix Asphalt (HMA) underlain by 4 inches of crushed surfacing base course (CSBC) that meets Washington State Department of Transportation (WSDOT) Standard Specification 9-03.9(3). Alternatively, asphalt treated base (ATB) or Class %-inch HMA could be used for construction access followed by repair of any construction damage and final surfacing. If this alternative is used, we recommend a minimum of 2 inches of CSBC to serve as a working surface and a minimum of 3 inches of ATB. Final surfacing should consist of 2 inches of Class % inch HMA after any construction damage has been repaired. Paving for heavy traffic areas, such as bus lanes, fire lanes, and access for garbage and food service trucks should consist of 4 inches of Class %-inch HMA above 6 inches of crushed rock base. If an ATB section is desired, we recommend a 2-inch-thick working surface of crushed rock, topped by 4 inches of ATB and 3 inches of Class %-inch HMA. 15.1 Concrete Pavement Section A concrete pavement section for a heavy traffic load area, such as near trash enclosures, should consist of a 7-inch concrete slab. The concrete slab should be cast on 6 inches of CSBC. The crushed surfacing base course placed on firm and unyielding soil subgrade compacted to at least 95 percent of the soil's maximum dry density per ASTM D-1557. Concrete pavement should be cast using Portland cement concrete (PCC) with a minimum compressive strength of 4,000 pounds per square inch (psi) at 28 days. The concrete pavement should contain Grade 40 steel No. 4 bars placed at a maximum of 24 inches on center in two perpendicular directions. The bars should be placed within the upper one-half of the slab with at least 2 inches of concrete cover. We recommend crack control joints at locations that are aesthetically acceptable, and which achieve a joint spacing of 12 feet on center or closer. To June 14, 2018; Revised February 20, 2019 ASSOCIATED EARTH SCIENCES, INC. TG/ms-180111EO01-4-Projects 110180112JKEJWP Page 21 Subsurface Exploration, Geologic Hazard, and Lake Grove Elementary School Preliminary Geotechnical Engineering Report Federal Way, Washington Preliminary Design Recommendations lessen fatigue and damage to the free edges of PCC paving slabs at any concrete/asphalt transitions, we recommend thickening of the edge of the slabs to 12 inches. We recommend that AESI inspect the soil and crushed rock surfacing subgrades prior to concrete placement. 16.0 PROJECT DESIGN AND CONSTRUCTION MONITORING Our report is preliminary since only a preliminary project concept was available at the time this report was prepared. We recommend that we be allowed to review project plans when they are completed and to revise the recommendations presented in this report as needed. We are also available to provide geotechnical engineering and monitoring services during construction. The integrity of the foundation system depends on proper site preparation and construction procedures. In addition, engineering decisions may have to be made in the field in the event that variations in subsurface conditions become apparent. Construction monitoring services are not part of our currently approved scope of work. June 14, 2018,Revised February 20, 2019 ASSOCIATED EARTH SCIENCES, INC. TG/ms-180212E001-0-Projects 120180212JKE�WP Page 22 Subsurface Exploration, Geologic Hazard, and Lake Grove Elementary School Preliminary Geotechnical Engineering Report Federal Way, Washington Preliminary Design Recommendations We have enjoyed working with you on this study and are confident these recommendations will aid in the successful completion of your project. If you should have any questions or require further assistance, please do not hesitate to call. Sincerely, ASSOCIATED EARTH SCIENCES, INC. Kirkland, Washington Tyler Gilsdorf, G.I.T., CESCL Senior Staff Geologist Kurt D. Merriman, P.E. Senior Principal Engineer Attachments: Figure 1: Vicinity Map Figure 2: Site and Exploration Plan Figure 3: Current Aerial Lidar-Based Topography Appendix A: Exploration Logs Appendix B: Laboratory Results Appendix C: Sketch of Proposed Infiltration Facilities June 14, 2018; Revised February 20, 2019 ASSOCIATED EARTH SCIENCES, INC. TG/ms-280112E001-4-ProjeMJ20180112JKEJWP Page 23 lit r J AL �I i or r ctnt•a--.iti _ , IRK ■ _ _� h[F�2 3 ipl C7�pgfa ?1i N a p� 5 nr a s s o c i a t e d N earth sciences Ay� in corporaiec 0 1000 2000 VICINITY MAP FEET L DATA SOURCES/REFERENCES: LAKE GROVE ELEMENTARY SCHOOL E USGS:7.5'SERIES TOPOGRAPHIC MAPS, ESRI/I-CUBED/NGS2013 NOTE:BLACNANDV1hiITE REPRODUCTION OF THIS COLOR FEDERAL WAY, WASHINGTON ■ KING CO: STREETS, PARCELS, CITY LIMITS 1/18 ORIGINAL MAY REDUCE ITS EFFECTIVENESS AND LEAD TO PROJ NO DATE: FIGURE: LOCATIONS AND DISTANCES SHOWN ARE APPROXIMATE INCORRECT INTERPRETATION 180212E001 5/18 1 c J 0 a� e O m m w Y z z o - r xa? �y G LL m L O W -� W m W O O o �_ > s3 a m N ._ X W W J O N 0 0 m ZmZ a a z W W ¢ Gs W¢ $q n 0 O w N W w On o so§ O / Z Q W m W W W ~ LIJ p W Y LL oo �• 'iii r r J o �L m CL z o Z g y < SS LLJ � � m�< o Qoza�'� m F- F 'u F- Z LU w •__ r•n� a m W w o si i/) W J W 7 �ax9m Jj h' ¢ > Q p W O O _.5 �m ow o W a Z Z Z rc�o= - V �� m Enw a C) boy a � Q wLL 2 8 Ei g -CS J z o ��"`��+T STsf-��'.� ." ��75 .�~C y^j�F�iY. Y•��� ��+yp�-' i - ATI 4 Tak .�'�• rC"�_ � ' r � +ems �_ yqc _ 'r1 r t r .-w •T - �r 41 AlkJ_ . i8� -ateu, t t -a -x77k �__Aw . J ■ r. � = �' . a fir' ^ _ fir` �`�•` . .r1 f�fj`�"�r m •JF� �� lid Ir - � �_�'i ® Fe a•- •p gyp � �.,° C� �� a• J \r �ti p1 . _ q1-2E k n.w ..wepn-.. e. �en�rumww� Mwo nn nwr>,u>oea•>�aa sao rw.. APPENDIX A Exploration Logs J r ; °o° ° Well -graded gravel and Terms Describing Relative Density and Consistency 2 ^ F. O00o GW gravel with sand, little to DensitySP_T(%lowstfoot a ) o no fines Coarse- Very Loose 0 to 4 > ° o U. W Loose 4 to 10 Grained Soils Medium Dense 10 to 30 Test Symbols 00000 Poorly -graded gravel oO � 0 0 0 0 0 GP and gravel with sand, Dense 30 to 50 o v = d 00000 00000 little to no fines Very Dense >50 G = Grain Size a a Z CD a o 0 0 o a z M= Moisture Content Consistengy SPTt blows/foot A = Atterberg Limits p p zo c _ e , Silty gravel and silty Very Soft 0 to 2 C = Chemical w C m y 0^ fl GM gravel with sand Fine- Soft 2 to 4 DID =Dry Density Soils c „ ° y C LL e Grained Medium Stiff 4 to 8 K= Permeability S? 0� o Stiff 8 to 15 N Clayey gravel and Very Stiff 15 to 30 N GC clayey gravel with sand Hard >30 CD `` Component Definitions Descriptive Term Size Range and Sieve Number i; Well -graded sand and F SW sand with gravel, little Boulders Larger than 12" o ILL to no fines Cobbles 3" to 12" Z °' m "T '` Gravel 3" to No. 4 (4.75 mm) in 0 > vll Poorly -graded sand Coarse Gravel 3" to 3/4" A and sand with gravel, Fine Gravel 3/4" to No. 4 (4.75 mm) a c o v N d little to no fines Sand No. 4 (4.75 mm) to No. 200 (0.075 mm) 0 z Coarse Sand No. 4 (4.75 mm) to No. 10 (2.00 mm) Silty sand and Medium Sand No. 10 (2.00 mm) to No. 40 (0.425 mm) ny SM silty sand with Fine Sand No. 40 (0.425 mm) to No. 200 (0.075 mm) cc U o a gravel Silt and Clay Smaller than No. 200 (0.075 mm) Ln LL N _ SC Clayey sand and (3) Estimated Percentage Moisture Content ca ^� clayey sand with gravel Component Percentage by Weight Dry - Absence of moisture, dusty, dry to the touch Trace <5 Slightly Moist - Perceptible Silt, sand silt, ravel) silt, Y gravelly moisture d � o in M� silt with sand or ravel 9 Some 5 to <12 Moist -Damp but no visible w t Modifier 12 to <30 water Clay of low to medium CD CD ai (silty, sandy, gravelly) Very Moist Water visible but 04 o U 'D plasticity; silty, sandy, or not free draining z r = CIL gravelly clay, lean clay Very modifier 30 to <50 Wet -Visible free water, usually y E (silty, sandy, gravelly) from below water table a — Organic clay or silt of low Symbols T — — oL plasticity Blows/6" or ° —_— — Sampler portion of 6" Cement grout - ° Type f surface seal Elastic silt, clayey silt, silt 2 0" OD Sampler Type e MH with micaceous or ,O 1S DescrlptioR Bentonite Split -Spoon c•� seat rn ° diatomaceous fine sand or Sampler 3.0" OD Split -Spoon Sampler :" Filter pack with w `° ° Silt (SpT) := blank casing 3.25" OD Split -Spoon Ring Sampler (•i : g Clayof high plasticity, g p ty, tp .o m U o v 0 c Ln CH sandy or gravelly clay, fat section Bulk sample 3.0" OD Thin -Wall Tube Sampler Screened casing ° 19 E w claywith sand or ravel g .= or Hydrotip (including Shelby tube) •,• with filter pack to v Grab Sample End cap rr r� rr Organic clay or silt of O Portion not recovered r rr OH medium to high ttl Percentage by dry weight (4) Depth of ground water plasticity (2) (SPT) Standard Penetration Test 1 ATD = At time of drilling (ASTM D-15SM Q Static water level (date) t3l In General ACCardance with uck and other 00 'rganic tIP-T Lhighliysoils Standard Practice for Description Is1 Combined USCS symbols used for = O and Identification of Soils (ASTM D-2468) fines between 5% and 12% o Classifications or soils in this report are based on visual field and/or laboratory observations, which include density/consistency, moisture condition, grain size, and g plasticity estimates and should not be construed to imply field or laboratory testing unless presented herein. Visual -manual and/or laboratory classification 3 methods of ASTM D-2487 and D-2488 were used as an identification guide for the Unified Sal Classification System. 0 a s s o c i a t e d earth sciences EXPLORATION LOG KEY FIGURE Al i n c o r p o r a t e d associated Exploration Lq e a r t h s c i e n c e s Project Number Number Sheet '"0°rP o ra ted FE-loration 180212EO01 EB-1 r 1of1 Project Name I_ak-e -Grove Elementary School Ground Surface Elevation (ft) —348 Location Federal Way. WA Datum NC;VD 99 Driller/Equipment EDI / Truck Rig Date Start/Finish S11 8/18 ,• /1 B/15 R Hammer Weight/Drop 140# 130" Hole Diameter (in) _gird w a nE c o —m da m > Se �w Blows/Foot H a S E m o mT '�� 3 — a `m T DESCRIPTION Ulm O 10 20 30 40 Asphalt-3inches CrusInches hed A - fi �[ilate 5 S1 10 S-2 '- Slightly moist, dark brown to gray, silty, fine to medium SAND, some gravel; 1 3 poor recovery, gravel in tip of sampler (SM). 1 '&3 2 ------------------------------ Vashon Lodgement Till Slightly moist, gray with minor mottling to red, silty, fine to medium SAND, ( om, gravel; unsorted; broken gravel present, blow counts may be overstated ------------------------------- Vashon Lodgement Till / Vashon Advance Outwash Transitional 15 Slighty moist, gray, fine to coarse SAND, some gravel, some silt; poor recovery, S 3 _• b en gravel in spoon, blowoounts may be overstated (SP-SM). 20 5ightty; ost, grayish brown, medium to coarse SAND, some gravel, some sift S4 �P fMN Bottom of exploration boring at 21.5 feet No groundwater encountered. 25 30 35 Sampler Type (ST): m 2" OD Split Spoon Sampler (SPT) m 3" OD Split Spoon Sampler (D & M) ® Grab Sample No Recovery M - Moisture Ring Sample Q Water Level() Q Shelby Tube Sample 1 Water Level at time of drilling (ATD) Logged by: BY Approved by: JHS ea S s 0 clated Ex IorationL e a tciences Project Number E)loration Number Sheet � L 0 f 0 C 1 3 1 8 d 180212EO01 E13-2 I 1 of 1 Project Name Lake ro EI enta School Ground Surface Elevation (ft) —351 _ Location Federa ax Datum _NGVD 99 _ Driller/Equipment EDI /Truck Rog Date Start/Finish XVI 8j1$r5/1 8/1 S Hammer Weight/Drop 1 Hole Diameter (in) R inrJ1ps � a) n C _ N JJ Blows/Foot N w n S E nE 2 � °7a ,� E 3 o T � C7� 0 F3 O DESCRIPTION 10 20 30 40 Asphalt - 3 Inches Crushed Aggrailate -B Inches '' '!• Fill 5 Slightly mist, gray, silty, fine to coarse SAND, some gravel; broken gravel in 11 S 1 spoon, blowcounts may be overstated (SM). 1 1 �12 10 Slightly moist, brown and gray, silty, fine to coarse sand, some gravel; unsorted; S-2 broken gravel present in sampler, blowcounts may be overstated (SM). 15 5 3 Slightly moist to moist, gray with minor mottling to red, silty, fins to coarse SAND, some gravel; broken gravel present in sampler, blowcounts may be overstated (SM). :.. ------------------------------- Vashon Advance Outwash 20 Slightly moist, tan, fine to medium SAND, trace silt, trace gravel; minor bedding S.4 (114 inches thick) of very silty, fine sand (SP). Bottom of wooration boring at 21.5 feet No groundwater encountered. 25 30 35 0 1 11 Sampler Type (ST) n m 2" OD Split Spoon Sampler (SPT) ❑ No Recovery M - Moisture Logged by: BY SZ Water Level Approved by: JHS m 3" OD Split Spoon Sampler (D & M) U Ring Sample () v ® Grab Sample Q Shelby Tube Sample 1 Water Level at time of drilling (ATD) 2 Exploration L easso�Iated e a r t h s c i en c e s Project Number E)loration Number Sheet '"`o rp o ra t e d 180212EO01 EB-3 1of2 Project Name Lake Grove Elementacy School Ground Surface Elevation (ft) —347 Location Fecipral Way- WA Datum NGVD 29 Driller/Equipment EDI Truck Ria Date Start/Finish 611 A/1 R SM R/1 R Hammer Weight/Drop 14 130" Hole Diameter (in) irv^jZpS m E =y a � � J BIOWS/FOOt N H a S E O T� C7 V7 DESCRIPTION 0 m O 10 20 30 40 Sod - 4 InchesTopsoil -8 inchesIT' 1 1 1 F� Brown. siltv. fine to medium SAND. trace to some aravei (SMI.1 Slightly moist, brown mottling to orange becoming more gray with depth, silty, 2 S 1 fine to medium SAND, some gravel (SM). 3 3 I I Vashon Lodgement Till / Vashon Advance Outwash Transitional I I I 10 Slightly moist, brown to gray, silty, fine to coarse SAND, some gravel; broken S 2 gravel, blowcounts may be overstated; poor recovery, till -like (Suf). a • 0 15 S 3 n Slightly moist, gray, very sandy, GRAVEL, some silt; broken gravel in sampler, hlowcounts may be overstated (GP -GM). 20 S� ' Slightly moist, gray to tan, very gravelly, silty, fine to coarse SAND; massive; tilidike (SM). 25 Moist, gray transitioning to tan, silty, fine to coarse SAND, some gravel; S-5 increase in fines with depth; till -like (SM). 39 Moist, gray with some tan, silty, fine to medium SAND, some gravel; massive; S 6 till -like (SM). 35 As above (SM). 24 S 7 35 7 42 Sampler Type (ST): R m 2" OD Split Spoon Sampler (SPT) No Recovery M - Moisture Logged by: By 10 3" OD Split Spoon Sampler (D & M) Ring Sample Q Water Level Q Approved by: JHS ® Grab Sample 0 Shelby Tube Sample t Water Level at time of drilling (ATD) a s s o c i a t e d Exploration Log earth sciences Project Number Exploration Number Sheet i°°°rpora1ed 180212E001 EB-3 2of2 Project Name Lake Grove Elementwy School- Ground Surface Elevation (ft) —347 Location Datum NGVl) 99 Driller/Equipment EDI / ck RioDate Start/Finish S11 8/1 S R/1 R/1 R Hammer Weight/Drop 140# 130"_ _ Hole Diameter (in) R iod3ej iR N 9-6 L O — > (� y N Blows/Foot w n aE �n C m 3 r o Tcmn 10 kn DESCRIPTION o k' 3 m ° 10 20 30 40 As above with coarse sand (SM). S-8 ' ---- -- — -- --------------_--------- Vashon Advance Outwash 45 [Moist, gray, fine to medium SAND, trace coarse sand, some gravel, some sift 1 S-9 :. (SP-SM). 3 50 Moist, gray, fine to medium SAND, some gravel, trace silt, trace coarse gravel; 18 S 10 contains minor stratifications (1/8 inch thick) (SP). 20 21 55 Slightly moist, gray, fine to coarse SAND, trace sift; coarser with depth; contains 10 S 11 minor stratifications (up to 1/8 inch thick) (SP). 22 38 60 Slightly moist, gray, fine to medium SAND, trace sift (SP). 14 S-12 27 •• 37 Bottom of expiloration boring at 61.5 feet No groundwater encountered. 65 70 75 Sampler Type (ST): m 2" OD Split Spoon Sampler (SPT) No Recovery M - Moisture m 3" OD Split Spoon Sampler (D & M) Ring Sample Q Water Level Q ® Grab Sample 0 Shelby Tube Sample t Water Level at time of drilling (ATD) Logged by: BY Approved by: JHS associated Exploration L earth s c i e n c e s Project Number F)loration Number Sheet n corPoratea 180212EO01 EBB 1of1 Project Name Lake_Gf4yp— Flementary School _ Ground Surface Elevation (ft) —349 Location Federal Way WA Datum NGVD 29 Driller/Equipment EDI 1 Trugk _Rig Date Start/Finish 511 S/1$,5/1 8/18 Hammer Weight/Drop 140# J 30" Hole Diameter (in) R inrhPc v Vl V w n n O yiu i J y Blows/Foot N jn H S E T 5, :� o iu o T rn c7 Eno DESCRIPTION " m m t ° 10 20 30 40 Sod - 4 inches Topsoil - 8 inches Fill Slighily moist, brown to reddish brown, silty, fine to medium SAND, some gravel .••' SMZ------ '-- —^ m VashonLodgeentTill^ 5 Slightly moist, gray mottling to red present, silty, fine to medium SAND, some 12 S-1 =•: gravel; unsorted (SM). 1a 40 10 Slightly moist, gray, silty, fine to medium SAND, some gravel; unsorted; 14 S 2 sandy -till (SM). 21 �25 'I. f .r — Vashon Advance Outwash— -- 15 _ Driller notes being on top of a rock; poor recovery. S-3 Moist, gray, silty, fine to coarse SAND, some gravel; zones of till -like material (SM). MW 20 Moist, gray, very gravelly, fine to predominantly medium SAND, some sift; layer 1 S-4 (1 inch thick) of opdized reddish brown sift; broken gravel in spoon, blowcounts 3 -\may be overstated SP-SM . 4 Bottom of wooration boring at 21.5 feet No groundwater encountered. 25 30 35 N n m 0 m N CL Sampler T S PI Type ( T): F m 2" OD Split Spoon Sampler (SPT) ❑ No Recovery M - Moisture Logged ogge by: BY D 3" OD Split Spoon Sampler (D & M) Ring Sample Q Water Level() Approved by JHS n ® Grab Sample 0 Shelby Tube Sample _V Water Level at time of drilling (ATD) c a s s o c i a t e d Geologic & MonitoringWell Construction Log e a r t h s c i e n c e s Project Number Well Number Sheet Incorporated 180212EO01 EB-5W 1 1of3 Project Name Lake GroveI nta hool Location Federal Way. WA Elevation (fop of Well Casing) Surface Elevation (ft) —347 Water Level Elevation Date Start/Finish 717N 77 27118 — Drilling/Equipment EDI 1 B61 fuck Rig Hole Diameter (in) 8 If1Ch Hammer Weight/Drop 140# / 39 > U O v WELL CONSTRUCTION T to DESCRIPTION 5 10 15 20 25 30 Flush mount -monument with o; : Asphalt - 2.5 inches locking well cap Base Coarse! Crushed Rock --4 inches Concrete 0 to 1 foot Fill Drill cuttings consist of moist, brown, fine to medium SAND, some silt, some gravel (SP-SM). Bentonite chips and grout 1 to 86 feet 2-inch I.D. PVC casing with threaded connections and 0-rings 0 to 90 feet N o Sampler Type (ST): m m 2" OD Split Spoon Sampler (SPT) 3" OD Split Spoon Sampler (D & M) ® Grab Sample 4 Moist, light brown to brown, fine to medium SAND, some silt, some 8 gravel (SP-SM). 35 -- _ --------- VashonLodgementTill 11 27 32 27 50/6" 21 26 32 18 50/6" 40 Bola" " 10 30 46 0 No Recovery U Ring Sample [j Shelby Tube Sample Moist, light brownish gray with minor w6dation, fine to medium SAND, some silt, some gravel; somewhat unsorted (SP-SM). Moist, light brownish gray, silty, fine to medium SAND, some gravel; unsorted (SM). -------------- Vsshon Lodgement Till / Vashon'Advance Outwash Transitional Moist, light brownish gray, fine to medium SAND, some silt, trace gravel; massive (SP-SM). Moist to very moist, light brownish gray, silty, fine to medium SAND, trace gravel; somewhat unsorted to massive (SM). Moist, gray to light brownish gray, silty, fine to medium SAND, some gravel; somewhat unsorted (SM). ---------------------------- Vashon Advance Outwash Moist to very moist, light brownish gray, fine to medium SAND, some silt, some gravel; massive; low recovery, broken rock in sampler (SP-SM). M - Moisture Water Level () 1 Water Level at time of drilling (ATD) Logged by: TG Approved by: JHS e s s o c i s t e d Geologic $ Monitori earth Sciences Project Number V inccrporaIed 180212EO01 Project Name Lake Grove Elm l Elevation (fop of Well Casing) Water Level Elevation Drilling/Equipment EDI I B61 Truck Rig Hammer Weight/Drop 140# 130" ai p n^ J N d E 3 WELL CONSTRUCTION T co 0 cn 50 55 60 65 70 rr75 ng Well Construction Lcm Veff Number Sheet EB-5W 2 of 3 Location Federal Way. WA Surface Elevation (ft) -347 Date Start/Finish Hole Diameter (in) 88 irlcheE DESCRIPTION 15 = Very moist, gray to light brownish gray, gravelty, fine to medium SAND, 35 some silt; massive (SP-SM). 27 14 Moist to very moist, gray to light brownish gray, gravelly, fine to medium 37 SAND, trace silt; massive (SP). 37 13 Moist, light brown to light brownish gray, gravelly, fine to medium SAND, 22 some silt; massive (SP-SM). 18 Bentonite chips and grout 1 to 19 86 feet 25 41 2-inch I.D. PVC casing with 13 threaded connections and 26 0-rings 0 to 90 feet 26 Sampler Type (ST): m m 2" OD Split Spoon Sampler (SPT) m 3" OD Split Spoon Sampler (D & M) LU 3 Grab Sample z: 7 13 27 Moist, light brownish gray, fine SAND, some silt, trace gravel; massive (SP-SM). Moist, light brownish gray, very gravelly, fine to medium SAND, some silt; faint stratification of line and medium sand (SP-SM). Moist, light brown to light brownish gray, fine SAND, some silt, trace gravel; faint stratification (SP-SM)_ 15 Moist, light brownish gray, gravelly, fine to medium SAND, some silt; 40 massive; broken rock in sampler (SP-SM). 42 7 Moist, light brownish gray, fine to coarse SAND, some gravel, trace silt; 17 faint stratification of coarser grains (SP). 18 allo Recovery M - Moisture Logged by: TG Ring Sample Q Water Level Q Approved by: JHS Shelby Tube Sample 7 Water Level at time of drilling (ATD) a s s o c i a t e d Geologic & Monitorin Well Construction Log e a r t h s c i e n c e s Project Number Well Number Sheet incorporated 180212EO01 _ EB-5W 3of3 Project Name Lake Gromo ElementElementa1y School Location Federal Way, WA Elevation (fop of Well Casing) Surface Elevation (ft) -347 Water Level Elevation Date Start/Finish 7127/187Q711 A Drilling/Equipment EDj / B61 Truck Rig _ Hole Diameter (in) 8 inche5 Hammer Weight/Drop 140# / 30" CL J CD N d� v WELL CONSTRUCTION T m DESCRIPTION 85 Colorado silica sand 86 to 101 feet 90 2-inch I.D. PVC well screen with threaded connections and 0-rings 0.010-inch slot width 90 to 100 feet 95 00 Glued on end cap Well tag # BKH-544 05 10 11 Slightly moist, light brown to light brownish gray, gravelly, silty, fine to 25 medium SAND; faint stratification (SM). 31 =. •' '. 7 Slightly moist to moist, gray to light grayish brown, gravelly, fine to 30 medium SAND, trace sift; massive (SP). 33 7 Slightly moist to moist, light gray to light brownish gray, gravelly, silty, fine 32 SAND; massive (SP). 37 7 As above. 24 37 7 Moist, light gray to light gra} sh brown, fine to medium SAND, trace 32 gravel, trace sift; faint stratification of coarser grains (SP). 40 Boring terminated at 101.5 feet. Well completed at 101 feet on 7/27/18. No groundwater encountered. Sampler Type (ST): m m 2" OD Split Spoon Sampler (SPT) No Recovery m 3" OD Split Spoon Sampler (D & M) Ring Sample z ® Grab Sample Shelby Tube Sample M - Moisture Q Water Level () T Water Level at time of drilling (ATD) Logged by: TG Approved by: JHS associated Exploration Lo e a r t h s c i e n c e s Project Number E-Voration Number Sheet Inco r p a ra lad 180212EO01 EB-6 1of1 Project Name Lake Grove Elementary School Ground Surface Elevation (ft) —350 Location _Federal Way, WA Datum Nayn q9 Driller/Equipment EDj 1$61 TrCuk Rig Date Start/Finish 7/30/1 R 7/30/i R Hammer Weight/Drop 140# 1-30" Hole Diameter (in) 8 inrhPc C N U L a E 0 9 a ; Blows/Foot N y F07 E— m o T DESCRIPTION m m 0 3 t ° 10 20 30 40 Asphalt - 2.5 inches 7-Cuttings FillFT are moist, brown, gravelly, silty, fine SAND (SM). 5 Slightly moist, brown and gray, gravelly. silty, fine to medium SAND; S unsorted' broken ravel in s n (SM). Vashon Lodgement Till Drill grinding at 6 feet. f 0 Moist, brown and gray, S-2 :: g y very gravelly, silty, fine to medium SAND; unsorted; s broken gravel in spoon; gravel mostly rounded (SM). tc 15 Moist with wet seams. brown and ve S 3 �• SAND; unsorted (SM), gray, very gravelly, silty, medium to coarse 20 S 4 . • I Poor recovery.In ti moist, silty, p: gravelly, medium to coarse SAND; unsorted SM . Bottom or exooration boring at 20.5 feet No groundwater encountered. 25 30 35 I Sampler Type (ST) m 2" OD Split Spoon Sampler (SPT) ❑ No Recovery M - Moisture Logged by: NS m Y OD Split Spoon Sampler (D & M) Ring Sample Q Water Level() Approved by: .1HS w ® Grab Sample Q Shelby Tube Sample 1 Water Level at time of drilling (ATD) associated Exploration L earth sciences Project Number Booration Number Sheet I nc O rp o ra t e d 180212EO01 FEB-7 1 1of1 Project Name Lake r Eigmentaly School _ Ground Surface Elevation (ft) —350 Location Federa ay Datum Driller/Equipment EDI I B 1 TrcukI Date Start/Finish 7/3011 R 7/.from R Hammer Weight/Drop 14 # / Hole Diameter (in) R jnL hac w m _ u o to c c — m m w Blows/Foot H a S E Ta :� E o a� L 0 T to 'C7 rA DESCRIPTION o d i° CO 3 ° 10 20 30 40 Fill S 1 Mavery silty, very fine SAND, some Moist, dark brown, ve gravel (SM). ^ `— Vashon Lodgement Till 5 Dry to slightly mast, light brown and gray, gravelly, silty, fine to medium SAND; S-2 unsorted (SM). 10 S 3 : As above. 1 — — _:.�-•� Vashon Lodgement — Till /Vashon— Advance— DrrRw•ash 7rdna—itlnnal- 15 I I Poor recovery. Upper 3 inches: moist, gray, fine to medium SAND, some silt, trace to some gravel (SP-SM). Lower 3 inches: Slightly mast, gray and brown, silty, gravelly, fine to medium SAND (SM). ■ 20 Slightly d to most, gray, brown, red, orange, sand silty, S 5 unsarled sf h sti (GM). g Y, GRAVEL; Bottom of wooration boring at 21 feet No groundwater encountered. 25 30 .2 35 Sampler Type (ST): m 2" OD Split Spoon Sampler (SPT) m 3" OD Split Spoon Sampler (D & M) IN Grab Sample 11 17 ❑ No Recovery M - Moisture U Ring Sample Q Water Level() Q Shelby Tube Sample -T Water Level at time of drilling (ATD) Logged by: NS Approved by: JHS associated Exploration Loq earth s c i e n c e s Project Number F�loration Number Sheet i n co rp ore ted 180212E001 EB4 1of1 Project Name Lake Grove Elementary SChool Ground Surface Elevation (ft) —347 Location _Federal My. WA Datum NGVf) 7A Driller/Equipment EDI B61 TrcLjk Rig Date Start/Finish 7130/18,7/30/18 Hammer Weight/Drop 1 1 _ _ Hole Diameter (in) R inr_hes i n C E O —y a > - f0 J BIOWS/FOOt w to H 3 m o T '�� DESCRIPTION a U m 3 t ° 10 20 30 40 Asphalt - 2.5 inches Fill Moist to very moist, dark grayish brown, very silty, gravelly, well graded SAND S-1 - (SM).F1 5 r 1 in moist, dark brown and orange, gravelly, silty, SAND; abundant 02 Uppe€cs (SM). Vashon Lodgement Till Moist, dive, silty to very silty, gravelly, fine SAND; unsorted: lightly cemented (SM). 10 Slightly moist to moist, gray and brown, very S-3 ;; : • ' g tly g y ry gravelly, silty, fine to medium SAND; unsorted (SM). Slightly moist, brownish gray, gravelly, fine SAND, some silt (SP-SM). 15 S� Vashon Lodgement T€II / Vashon Advance Outwash Transitional 20 Moist, olive, black and orange, gravelly coarse SAND, some silt; nonstratified; S-5 sticky (SP-SM). Bottom of wooration boring at 21.5 feet No groundwater encountered. 25 30 35 Sampler Type (ST) m 2" OD Split Spoon Sampler (SPT) 3" OD Split Spoon Sampler (D & M) ® Grab Sample 18 No Recovery M - Moisture Ring Sample Q Water Level () Q Shelby Tube Sample 1 Water Level at time of drilling (ATD) A43 Logged by: NS Approved by: JHS ass0cIated Exploration Lo earth sciences Project Number Booration Number Sheet i n c o rp o re t e d 180212EO01 7EB-9 1 1of1 Project Name Lake Grove EI men School Ground Surface Elevation (ft) -345 Location Federal ay. A Datum NGVD 99 Driller/Equipment Tr-cuk Rig Date Start/Finish 7/10/1 A 7130/1 R Hammer Weight/Drop 1 Hole Diameter (in) R inrhpc _ a� c O �, m al J w Blows/Foot a)a a) o S E m a E m o a`) 0 T Wn C7 cn DESCRIPTION a m O Tgnoll 1 Fill 10 20 30 40 S 1 medium stiff, slightly moist, brown, sandy, SILT, some gravel; scattered roots (ML). 5 III U 3 inches: Wet, dark browngravelly.sand ,SILT; occasional roots (NIL), s S 2 ' ' Vashon Lodgement Till 3 Lower 3 inches: Wet, gray with minor Iron o)dde band, gravelly, silty, fine SAND; 27 • unsorted (SM). 10 I Slightly moist, gray and brown, very gravelly, silty, fine SAND; unsorted; broken I 1 S-3 I gravel in spoon (SM). 2 :j Grinding at 13 feet, suspected cobble/boulder. 15 Moist, gray and brown, very gravelly, silty, fine SAND; unsorted (SM). 21 S� 27 24 o • 0 0 S-5 0 . Poor recovery. Moist, tan, orange, gray and brown, coarse sandy, GRAVEL, vie some silt: largebroken ravel ins (GP -GM),. Bottom of mooration boring at 21 feet Groundwater encountered at 5 feet 25 30 35 N Sampler Type (ST): m m 2" OD Split Spoon Sampler (SPT) ❑ No Recovery M - Moisture Logged by: NS Y OD Split Spoon Sampler (D & M) U Ring Sample Q Water Level() Approved by: JHS ® Grab Sample 0 Shelby Tube Sample 1 Water Level at time of drilling (ATD) 4 associated Exploration Lo earth sciences Project Number Number Sheet '"0°rP c ra 1ed 180212EO01 FExploration EB-10 1of1 Project Name Lake Grove Elementary School __ Ground Surface Elevation (ft) -352 Location Frderal Way WA Datum NC -.VI) 29 Driller/Equipment EDI / BI Trcuk Rig Date Start/Finish 7/30/18 7/10118 Hammer Weight/Drop 140# r 30" Hole Diameter (in) 19 t a u! m � N Blows/Foot N H n 5 E roT am E o iu m k9 IA T DESCRIPTION — t ° 10 20 30 40 Fill S-1 Cuttings are dry, brown, sandy, gravelly, SILT; occasional cobbles; occasional rods (ML). Vasho� Lodgement TiR 1 Ws on Advance Outwash 5 Slightly moist to mast, gray and brown, very gravelly, silty, fine SAND; S-2 unsorted; broken gravel in spoon (SM). 10 S-3 As above with seam (1 inch thick) of iron o)dde staining. Difficult drilling, suspected boulder. 15 Very moist, tan, brown, gray and orange, very S� '•; ry g y g gravelly, fine to medium SAND, some sift to silty; unsorted (SP-SM). Vashon Advance Outwash 20 5 5 Moist, grayish brown, fine to medium SAND, some gravel, trace silt; very -\weakly stratified; grades to some sift near tip (S•P)_ Bottom of wooration boring at 21 feet No groundwater encountered, 25 30 35 Sampler Type (ST): m 2" OD Split Spoon Sampler (SPT) 3" OD Split Spoon Sampler (D 8 M) ® Grab Sample 1a ❑ No Recovery M - Moisture U Ring Sample Q Water Level() V] Shelby Tube Sample 1 Water Level at time of drilling (ATD) A43 Logged by: NS Approved by: JHS associated Exploration L earth sciences Project Number Booration Number Sheet i n c o rp o r a t e d 180212EO01 FEB-11 1of1 Project Name Lake Gr Ye Elernentajy School Ground Surface Elevation (ft) —377 Location Federal Wav WA _ Datum Jsl 79 Driller/Equipment EDI / 861 Trc_ uk Rig Date Start/Finish Hammer Weight/Drop 1 40# 30" Hole Diameter (in) ca H Blows/Foot t- G SCD E ° T `40 � DESCRIPTION 0 m ° 10 20 30 40 IdFill Mast, brown, silty, fine SAND, some gravel; occasional roots (SM). 5 III 5 2 �]-1 kUpfwr 3 inches: moist, orange, fine sandy, SILT, some gravel; organic particles Vas hon Lodgenwrd TIII Lower 3 inches: moist, dive, very silty, gravelly, fine SAND; unsorted (SM). Difficult drilling, suspected cobble or boulder. 10 U 6 inches: verymoist, ra , sigravelly, fine SAND; unsorted (SM). 5 Lower 6 inches: slightly moist, olive, very silty with a seam (2 inches thick) of 14 iron o)dde, very silty, gravelly, fine SAND; unsorted (SM). 12 15 S..4 Moist, dive with faint iron o)dde, very silty, gravelly, fine SAND; unsorted; lightly 26 cemented (SM). 171E Bottom of wooration boring at 16 feet No groundwater encountered. 20 25 30 35 Sampler Type (ST) m 2" OD Split Spoon Sampler (SPT) F1 No Recovery M - Moisture Logged by: NS 10 3" OD Split Spoon Sampler (D & M) U Ring Sample SZ Water Level() Approved by: JHS ® Grab Sample Q Shelby Tube Sample 1 Water Level at time of drilling (ATD) APPENDIX B Laboratory Results 10( 9( 8( A w Z 6( U- Z 5C w IY 4C w 3C 2C 1C C Particle Size Distribution Report c c 0 o a a 0 0 g 8r. s �ii u�■uin iuu W % +3„ % Gravel Coarse Fine 0.0 6.6 40.2 1 U. 1 y.0 I ,....� . GRAIN SIZE - mm. % Sand % Fines Coarse , Medium Fine Silt Clay 11.1 j 24.0 7.8 10.3 TEST RESULTS Opening Percent Spec." Pass? Size Finer (Percent) (X=Fail) 1.5 100.0 j 1 100.0 .75 93.4 .375 70.5 #4 53.2 #8 43.9 #10 42.1 #20 31.4 #40 18.1 #60 12.4 + #100 10.7 #200 10.3 #270 10.3 Material Description very sandy GRAVEL, some silt Atterberg limits (ASTM Q 1 181 PL= NP LL= NV PI= Classification USCS (D 2487)= GP -GM AASHTO (M 145)= A-1-a Coefficients Dgp= 17.0567 D85= 14,6580 D60= 6.5484 D50= 3.9011 D30= 0.7873 D75= 0.3370 1310= Cu= cc= Remarks Collected by: BCY Date Received: 05/31/2018 Date Tested: 06/04/2018 Tested By: BN Checked By: AWR Title: (no specttication provtaea) Location: Onsite Sample Number: E13-3 Depth: 15' a s s o c i a t e d Client: Federal Way School District e a r t h S c i e n c e s Project: Lake Grove Elementary School i n c o r p o r a t e d Project No: 180212. E001 Date Sampled: 05/18/2018 Particle Size Distribution Report C w C C 8 a O cps p@ O a ( 100 1 1 r 1 1 1 I I I V 1 I 90 1 I 1 I 1 1 1 1 1 1 I I 1 I 1 1 I I I 1 1 1 •I !I I I I I I I 1 1 I 1 I f 80 ! l I 1 I 1 1 1 1 1 1 I I 1 I 1 I 1 I 1 I 1 1 1 70 I I 1 1 I 1 I 1 1 1 I I I 1 1 1 i r I i I Ix I 1 I f f I 1 1 1 I W I I 1 r 1 I 1 1 1 1 1 1 I 1 I I Z 60 { 1 1 1 I 1 I I I 1 1 I 1 1 I 1 I I I { 1 I 50 1 ' 1 ' I 1 I 1 f I r Z 1 I LLJ V I 1 1 ! 1 I 1 r N LL 40 r I I r r 1 1 I 1 I f I 1 I 1 1 1 I I 1 1 r I 1 I I W 1 30 I 1 1 r 1 1 1 20 1 1 I 1 1 1 I I I I 1 1 1 I 1 1 1 i I I I i ! 1 r I I I i 10 I I 1 r 4 1 1 1 I 0 1 , I1 TI r 100 10 1 0.1 0,01 a.401 GRAIN SIZE - mm. % +3„ % Gravel % Sand % Fines Coarse Medium Fine Silt Clay Coarse Fine 0.0 6.0 29.7 13.4 24.5 12.8 13.6 TEST RESULTS Material Description Opening Percent Spec.' Pass? very gravelly, silty SAND Size Finer (Percent) (X=Fail) 1.5 100.0 1 97.1 Atterberg• Limits (ASiM D 4318) .75 94.0 PL= NP LL= NV PI= .375 78.8 #4 643 Classification #8 53.2 USCS (D 2487)= SM AASHTO (M 145)= A-1-b #10 50.9 Coefficients #20 39.7 1390= 15.2788 D85= 12.2723 D60= 3.6986 #40 26.4 D50= 1.8601 D80= 0.5068 D15= 0.1608 #60 17.4 1370= Cu= Cc= #100 14.8 Remarks #2770 1 13.4 Collected by: BCY Date Received: 05/31/2018 Date Tested: 06/04/2018 Tested By: BN Checked By: AWR Title: (no specification provided) Location: Onsite Date Sampled: 05/18/2018 Samole Number,• E13-3 Depth: 20' a s s o c i a t e d Client: Federal Way School District e a r t h S c i e n c e s Project: Lake Grove Elementary School i n c o r p o r a t e d -PrQIect J 80212 E001 Figure 0C 9C 8C 7C w Z 6C LL Z 5C w Of 4C w 3C 2C 1c C Particle Size Distribution Report C O O O 0 c0n o 0 0 v it M1111111IM11111MIN1111 11IM11111111011111111mil n q III�1in % +3„ % Gravel Coarse Fine 0.0 8.4 28.8 1 L. 1 u.0 i u-uu GRAIN SIZE - mm. % Sand % Fines Coarse Medium Fine Silt Clay 9.9 29.3 13.9 9.7 TEST RESULTS Opening Percent Spec.* Pass? Size Finer (Percent) (X=Fail) 1.5 100.0 1 94.6 .75 91.6 .375 73.5 #4 62.8 #8 55.0 #10 52.9 #20 42.7 #40 23.6 #60 14.6 #100 11.3 #200 9.7 #270 9.4 Material Description very gravelly SAND, some silt Atterberg Limits (ASTM D 4318( PL= NP LL= NV PI= Classification USCS (D 2487)= SP-SM AASHTO (M 145)= A-1-b Coefficients 1390= 17.4764 D85= 14.2921 D60= 3.6319 D50= 1.4798 D30= 0.5362 D1 5= 0.2586 DI 0= 0.0925 Cu= 39.28 Cc= 0.86 Remarks Collected by: BCY Date Received: 05/31/2018 Date Tested: 06/04/2018 Tested By: BN Checked By: AWR Title: (no specification proviaea) Location: Onsite Sample Number: EB-a Depth: 20' a s s o c i a t e d Client: Federal Way School District e a r t h s c i e n c e s Project: Lake Grove Elementary School i n c o r p o rate d Project_N_a.:_ - 180212 E001 Date Sampled: 05/18/2018 10 9i 81 71 Z 61 Z N W 2 4( W 3( 2C 1C C Particle Size Distribution Report C C O O O x w m 0 m � 0 in % +3„ % Gravel Coarse Fine 0.0 1 7.4 22.0 I V.I GRAIN SIZE - mm. % Sand Coarse MediaF'^ — I 10.2 32.1 16.5 TEST RESULTS Opening Percent Spec.' Pass? Size Finer (Percent) (X=Fail) 1 100.0 .75 92.6 .375 82.3 #4 70.6 #8 62.3 #10 60.4 #20 47.3 #40 28.3 #60 16.5 #100 12.6 #200 11.8 #270 11.7 (no specification provided) n: Onsite Number: EB-5W Depth: 40' a s s o c i a t e e a r t h s c i e n c e i n c o r p o r a t e LIMIN R91 % Fines S•u 11.8 Material Descrt�on Gravelly SAND Some Silt AtterbeEg Limits (ASTM D 4310 PL= np LL= nv PI= Classification USCS (D 2487)= SP-SM AASHTO (M 145)= A-1-b Coefficients D90= 16.7011 D85= 11.7083 D60= 1.9271 D50= 0.9661 D30= 0.4519 D15= 0.2223 D10= Cu= Cc= Remarks Date Received: 8-7-18 Date Tested: 8-7-18 Tested By: MS Checked By: TR Title: Client: Federal Way School District Project: Lake Grove Elementary School Date Sampled: 7-27-18 10 9 8 70 it LLI Z 60 Z 50 LLI LY 40 LLI a 30 20 10 0 Particle Size Distribution Report C C C C C N M < 0� a N 9! # # # # # # # 100 10 1 0.1 0,01 GRAIN SIZE - mm. %+3„ % Gravel % Sand % Fines Coarse Fine Coarse Medium Fine Silt Cla 0.0 4.3 13.8 10.0 35.2 29.7 7.0 TEST RESULTS Material Description Opening Percent Spec.' Pass? Gravelly SAND Some Silt Size Finer (Percent) (X=Fail) 1 100.0 .75 95.7 Atterberst Limits (ASTM D_4318) .375 90.9 PL= np LL= nv Pl= #4 81.9 #8 73.7 Classification #10 71.9 USCS (D 2487)= SP-SM AASHTO (M 145)= A-1-b #20 64.4 Coefficients #40 36.7 D9o= 8.6497 D85= 5.9102 D60= 0.7263 #60 13.5 D50= 0.5612 Dap= 0.3723 D15= 0.2633 #100 8.1 D10= 0.2095 Cu= 3.47 Cc= 0.91 #200 7.0 #270 6.9 Remarks I Date Received: 8-7-18 Date Tested: 8-7-18 Tested By: MS Checked By: TR _ Title: (no specification provided) Location: Onsite Date Sampled: 7-27-18 Sample Number: EB-5W Depth: 50' a s s o c i a t e d Client: Federal Way School District e a r t h s c i e n c e s Project: Lake Grove Elementary School i n c o r p o rate d Project No: 180212 E001 Fi ure 10 90 80 70 cr Z 60 IZ Z 50 w U 0_ 40 w a 30 20 10 a Particle Size Distribution Report C C C C C C C C + O O O O O O V O # # # 100 10 1 0.1 0.01 0.001 GRAIN SIZE - mm. %+3„ %Gravel % Sand % Fines Coarse Fine Coarse mawiu- Flno Silt Clay 0.0 3.0 27.4 9.5 30.4 19.4 10.3 TEST RESULTS Opening Percent Spec! Pass? Size Finer (Percent) (X=Fail) 1 100.0 .75 97.0 .375 82.1 #4 69.6 #8 61.8 #10 60.1 #20 47.8 #40 29.7 #60 15.9 #100 11.3 #200 10.3 #270 10.2 Material Description, Very Gravelly SAND Some Silt Atterberg Urnits (ASTM D 4318j PL= np LL= nv Pl= Classification USCS (D 2487)= SP-SM AASHTO (M 145)= A-1-b Coefficients 1390= 13.3106 D85= 10.7765 D60= 1.9893 D50= 0.9489 D30= 0.4300 D15= 0.2362 1390= Cu= Cc= Remarks Date Received: 8-7-18 Date Tested: 8-7-18 Tested By: MS Checked By: TR Title: (no specification provided) Location: Onsite Date Sampled: 7-27-18 -Sample Number: EB-5W Depth: 60' J& a s s o c i a t e d Client: Federal Way School District e a r t h s c i e n c e s Project: Lake Grove Elementary School i n c o r p o r a t e d 0212 E001 Figure 10 90 80 70 It Z 80 M Z 50 w U w 40 w a 30 20 10 0 Particle Size Distribution Report C C O O 0 000 0 0�0 111111111111111011111111111111 i IN r��■i inn 1GG 10 1 0.1 GRAIN SIZE - mm. %+3" ium % Gravel % Sand % Fines Coarse Fine Coarse MedFine Silt Clay 0.0 2.8 22.7 12.9 31.9 19.3 10.4 TEST RESULTS Material Desc_rint3on Opening Percent Spec." Pass? Gravelly SAND Some Silt Size Finer (Percent) (X=Fail) 1 100.0 .75 1 97.2 Atterbera Limits _(ASTM D 431 .375 87.2 PL= np LL= nv PI= #4 74.5 #8 63.7 Classification #10 61.6 USCS (D 2487)= SP-SM AASHTO (M 145)= A-1-b #20 49.6 Coefficients #40 29.7 Dg0= 11.2357 D85= 8.3990 D60= 1.7546 #60 15.9 D50= 0.8650 D30= 0.4292 D15= 0.2360 #100 1 11.6 D10= CU= Cc= #200 1 10.4 #270 10.4 Remarks Date Received: 8-7-18 Date Tested: 8-7-18 Tested By: MS Checked By: TR Title: (no specification provided) Location: Onsite Date Sampled: 7-27-18 SaMDle N m r: EB-5W De 70' a s s o c i a t e d Client: Federal Way School District e a r t h S c i e n c e s Project: Lake Grove Elementary School incorporate d r , t No: 180212 EOOI Figure 101 91 81 7( Z s( am Z 5( W w 4( w EL 3C 2C 1C Particle Size Distribution Report MINOR 11101111111111 VI\(lll\ VILL '�o +3„ % Gravel % Sand Coer2 Finn Coarse �ilediUrfi 0.0 0.0 17.6 12.6 43.3 TEST RESULTS Opening Percent Spec.* Pass? Size Finer (Percent) (X=Fail) .75 100.0 .375 94.2 #4 82.4 #8 72.1 #10 69.8 #20 41.4 #40 26.5 #60 19.5 #100 14.5 #200 I 12.8 #270 i 12.7 U. I U.0 I U Vu I % Fines Fine Sir ;a-y 13.7 12.8 Material Descriptiign Gravelly Silty SAND At ert�grgLimits (ASTM.D 43181 PL= np LL= nv PI= Classification USCS (D 2487)= SM AASHTO (M 145)= A-1-b Coefficients D90= 7.2433 D85= 5.4834 DB0: 1.4104 D50= 1.0823 D30= 0.5289 D150.1602 D10= CU= Cc= Remarks Date Received: 8-7-18 Tested By: MS Checked By: TR Title: Date Tested: 8-7-18 (no specmcanon proviaea) Location: Onsite Date Sampled: 7-27-18 Sample Number: EB-5W _ Depth: 801 a s s o c i a t e d Client: Federal Way School District e a r t h s c i e n c e s Project: Lake Grove Elementary School i n c o r p o r a t e d . ._ -- _ FEDERAL WAY PUBLIC SCHOOLS Each Scholar: A voice. A dream. A BRIGHT future. April 26, 2019 Mayor Jim Ferrell City of Federal Way 33325 8th Ave S Federal Way, WA 98003 RESUBMITTED 0 2019 CITY OF FEDERAL WAY OOMMUNfTY DEVELOPME,Yf RE: Lake Grove Elementary Site Development Permit Dear Mayor Ferrell, Office of the SUPERINTENDENT As a follow up to the meeting between the Federal Way School District and The City of Federal Way on Thursday April 18, 2019, please accept this letter as documentation and confirmation of the School District's position. Our Civil Engineer, LPD, provided a design that the City reviewed. One of the comments from the City was related to existing site condition ground covers that would necessitate the enlargement of the Flow Control Facility. Based on the attached letter, which is also within the Technical Information Report from our Engineer, the District believes that the system is correctly and appropriately sized and designed. The District understands that if Ecology or any other regulatory authority with jurisdiction, outside of the City of Federal Way, finds the system was not adequately sized by the District's Engineer that the District is solely liable for any penalties, expansion, modification and mitigation of same and further agrees to fully indemnify the City. The District also understands that entering into a storm water covenant with the City is a requirement of this project. If you have any questions, please do not hesitate to contact my office. ly, Dr. Tammy Campbell Superintendent, Fed Attachment ral Way Public chools Cc: Cole Elliot, P.E., Development Services Manager, City of Federal Way EJ Walsh, P.E., Public Works Director, City of Federal Way Casey Moore, Director of Capital Projects, FWPS Mike Benzien, Executive Director of Maintenance and Operations, FWPS Federal Way Public Schools Each Scholar: A voice. A dream. A BRIGHT future. 33330 8th Avenue South, Federal Way, WA 98003 1 p.253.945.2000 I f.253.945.2011 I www.fwps.org SEPA RULES WAC 197-11-970 Determination of non -significance (DNS) MITIGATED DETERMINATION OF NON -SIGNIFICANCE Description of Proposal: Lake Grove Elementary School Replacement Applicant: Federal Way Public Schools No. 210 Location of Proposal: 303 SW 308d' Street, Federal Way, Washington 98023 Legal Description: Refer to Page 7 of State Environmental Policy Act (SEPA) — Environmental Checklist for Lake Grove Elementary School Replacement Lead Agency: Federal Way Public Schools No. 210After review of a completed environmental checklist and other information on file with the agency, the Federal Way School District No. 210 has determined this proposal will not have a probable significant adverse impact on the environment. An environmental impact statement (EIS) is not required under RCW 43.21 C.03 0(2)(c). This information is available to the public on request. This MDNS is issued under 197-11-340(2); the lead agency will not act on this proposal for at least 14 days from the date below. Comments must be received by January 28d', 2019 at 5:00 PM. Responsible Official: Mike Benzien 1211 S. 332nd Street Federal Way, WA 98003 Phone: (work) 253-945-5965 email: mbenzien@fwps.org 1a li 41111&&z' . Date Issued Signature Comment Period Information: Any person may appeal and submit comments regarding this determination. Comments will be considered on environmental issues and any environmental documents related to the proposed action. All written comments will become part of the record. Comments are due by 5:00 p.m. January 281, 2019, and must be sent to suggest Mike Benzien, who is available to answer questions regarding this project at the above address or by email: RECEIVED JAN 10 2019 CITY OF FEPERAL WAY CONiMUr41iY HNELOPMENT LEGAL NOTICE Notice of Decision Threshold Determination: SEPA Mitigated Determination of Non -Significance (MDNS) Lake Grove Elementary School Replacement Project, No. FWPScpl8-LGR Project Proponent and SEPA Lead Agency: Federal Way Public Schools, Capital Projects, Operations & Maintenance Department Description of Proposal: The purpose of this project is to replace an existing elementary school for Federal Way Public Schools (FWPS) as part of a recent bond measure passed by voters in November 2017. Lake Grove Elementary School is located on the existing 9.43-acre site at 303 SW 308th Street, Federal Way, Washington, 98023. The existing school was built in 1965 with various additions and modernizations over the years, with the last remodeling completed in 1985. The existing school occupies a significant portion of the buildable area on the lower portion of the site with playfields located on the elevated, upper portion of the site. The existing facility is comprised of a single -story building with classrooms arranged along a double -loaded corridor; four portable classrooms are also located onsite. The project will include the demolition of the existing facility and construction of a new 2-story elementary school campus to maximize site area and increase efficiency. Frontage improvements will be provided; including standard elements encompassing a driving lane, parking lane, planter strip and sidewalk. To fully comply with ADA requirements, ramps will be provided at the curbs for main driveway access points, as needed. Location: The site is located at 303 SW 3081h Street, Federal Way, Washington, 98023. The King County Tax Parcel Number is 072104-9180 and it is located in the NE quarter of Section 04, Township 21 N, Range 4 E. Public and Agency Comments: In making a final Threshold Determination, the Responsible Official reviewed the completed environmental checklist and other environmental information on file with FWPS and the City of Federal Way; relying on the information therein to exercise substantive authority under the Washington State Environmental Policy Act, pursuant to RCW 43.21C.060, and the Mitigated Determination of Non -Significance (MDNS) is issued under the Washington Administrative Code (WAC) 197-11-340(2). The Responsible Official has determined that the proposal does not have a probable significant adverse impact on the environment. However, in addition to contextual revisions (errata), and the inclusion of updated reports, the following mitigations have been identified as a result of further investigation and comments received from the general public and affected jurisdictions: Included in the revised SEPA Environmental Checklist is the project schedule and responses to concerns regarding accessibility, student transportation, recreation, security and emergency preparedness during construction.. Decommissioning and removal of unused underground storage tanks; including requisite soil testing/remediation and tank closure assessment protocols, conducted by qualified professionals engaged by the District. Completion of a final traffic impact analysis (TIA); including the following mitigations: o Installation of required roadway improvements, including pedestrian circulation and onsite improvements for the intersection of SW 3081h Street and the East Driveway; assuring sight distance meets code requirements. o The addition of sections evaluating Student Pick-Up/Drop-Off locations from a traffic and pedestrian safety perspective, a presentation of School Safe Walk Routes, and a Queuing Analysis to clarify the potential for traffic issues during arrival/dismissal times. o Trip generation data added for 2020 horizon year; projecting trip generation of 284 daily trips (98 AM Peak and 51 PM Peak) for the new facility and illustrating the effect of trips on level of service (LOS) intersection standards, based on volume/capacity ration for signalized and unsignalized intersections. o Public transit stop information updated RECEIVED JAN 10 2019 CITY OF FEDERAL WAY COMMUNITY DEVELOPNIENT o Potential traffic impact fees identified, based on increased square footage Appeal Procedure: The issuance of a Threshold Determination is subject to review under the Washington State Environmental Policy Act (SEPA). If a petitioner wishes to appeal, the process and timing of the judicial appeal procedure detailed in Revised Code of Washington (RCW) 36.070C.040 shall be followed; immediately within the appeal period provided under statute; said appeal period shall commence on January 14, 2019 and conclude on January 28, 2019. Appeal proceedings for review under this chapter will require filing a land use petition in Superior Court. There is no separate administrative SEPA appeal for this type of land use decision. Responsible Official: Michael Benzien Title: Executive Director of Maintenance and Operations Mailing Address: Federal Way Public Schools, Educational Service Center, 33330 81h Avenue South, Federal Way WA 98003 Date of publication in the Federal Way Mirror. Friday, January 11, 2019 Date of publication in the Seattle Daily Journal of Commerce, Monday, January 14, 2019 Federal Way Public Schools FEDERAL WAY Educational Service Center (ESC) PUBLIC SCHOOLS 33330 81h Avenue South Federal Way WA 98003 (253) 945-2000 STATE ENVIRONMENTAL POLICY ACT (SEPA) ENVIRONMENTAL CHECKLIST Purpose of Checklist Governmental agencies use this checklist to help determine whether the environmental impacts of your proposal are significant. This information is also helpful to determine if available avoidance, minimization or compensatory mitigation measures will address the probable significant impacts or if an environmental impact statement will be prepared to further analyze the proposal. Instructions for Applicants This environmental checklist asks you to describe some basic information about your proposal. Please answer each question accurately and carefully, to the best of your knowledge. You may need to consult with an agency specialist or private consultant for some questions. You may use "not applicable" or "does not apply" only when you can explain why it does not apply and not when the answer is unknown. You may also attach or incorporate by reference additional studies reports. Complete and accurate answers to these questions often avoid delays with the SEPA process as well as later in the decision -making process. The checklist questions apply to all parts of your proposal, even if you plan to do them over a period of time or on different parcels of land. Attach any additional information that will help describe your proposal or its environmental effects. The agency to which you submit this checklist may ask you to explain your answers or provide additional information reasonably related to determining if there may be significant adverse impact. Instructions for Lead Agencies Please adjust the format of this template as needed. Additional information may be necessary to evaluate the existing environment, all interrelated aspects of the proposal and an analysis of adverse impacts. The checklist is considered the first but not necessarily the only source of information needed to make an adequate threshold determination. Once a threshold determination is made, the lead agency is responsible for the completeness and accuracy of the checklist and other supporting documents. Use of Checklist for Non -Project Proposals For non -project proposals (such as ordinances, regulations, plans and programs), complete the applicable parts of sections A and B plus the SUPPLEMENTAL SHEET FOR NONPROJECT ACTIONS (part D). Please completely answer all questions that apply and note that the words "project," "applicant," and "property or site" should be read as "proposal," "proponent," and "affected geographic area," respectively. The lead agency may exclude (for non -projects) questions in Part B - Environmental Elements —that do not contribute meaningfully to the analysis of the proposal. MC-1190ky1wil JAN 10 2019 CITY OF FEDERAL WAY COMMUNITY DEVELOPMENT Bulletin #050 — October 17, 2016 Page 1 of 32 0HandoutskEnvironmental Checklist If FEDERAL WAY ■ PUBLIC SCHOOLS A. BACKGROUND 1. Name of proposed project, if applicable: Federal Way Public Schools Educational Service Center (ESC} 33330 80 Avenue South Federal Watt WA 98003 (253) 945-2000 Federal Way Public Schools Lake Grove Elementary School Replacement, 303 SW 3W Street, Federal Way, Washington 98023 y - 8* 30a1;.51 5 3341, PI 6 Tow it P 4 u:t'i - w Mi a — i LMe Grove � � y ... EEer►lsl�tdry } Schvot ; rL al 5W 31 M F1 P� [ 4j 1 C� W 313�Lal ` SW3131hG'i R-deral Way � T E � � Figure 1 School �strret Project Site Vicinity L rWe GTNe Elawntc y Scncel Figure 1- Vicinity Map - Lake Grove Elementary School Bulletin #050 — October 17, 2016 Page 2 of 32 k:lHandoutsTEnvironmental Checklist FEDERAL WAY PUBLIC SCHOOLS 2. Name of applicant: Federal Way Public Schools Educational Service Center (ESC) 33330 901 Avenue South Federal Way WA 98003 (253)9d3-2000 Federal Way Public Schools (FWPS) Support Services Center,1211 South 332nd St, Federal Way, WA 98003 3. Address and phone number of applicant and contact person: Applicant: Mike Benzien, Executive Director, Maintenance and Operations Federal Way Public Schools Support Services Center 1211 S 332nd Street, Federal Way WA 98003 (206) 945-5930 (Office) 4. Date checklist prepared: September 25, 2018; revised January 7, 2019 5. Agency requesting checklist: Federal Way Public Schools (Lead Agency) City of Federal Way, Washington Contact Person: Robert McNeill, Senior Planner Barghausen Consulting Engineers, Inc. 18215 72nd Avenue S, Kent, WA 98032 (425) 251.6222 (Office) bmcneill bar hausen.com 6. Proposed timing or schedule (including phasing, if applicable): The complexity of this project dictates a tentative schedule be established which remains subject to change based on the length of entitlement permitting and plan review processes, weather conditions andlor contractor availability. Included in this document is the proposed project schedule and responses to concerns regarding accessibility, student transportation, recreation, security and emergency preparedness during construction. The current scheduled start date for vacating Lake Grove Elementary School is midllate June 2019, with contractor mobilization scheduled to begin shortly thereafter. Demolition activity is projected to begin in mid -July 2019, with a mid -August 2019 completion targeted - including abatement activity. Actual construction of the replacement school is projected to begin no later than late August 2019, with substantial completion scheduled for mid -October 2020 - including abatement activity. 7. Do you have any plans for future additions, expansion, or further activity related to or connected with this proposal? If yes, explain. The Applicant has no further plans for future additions, expansion or other similar activity relative to this development proposal aside from what is described in this proposal. 8. List any environmental information you know about that has been prepared, or will be prepared, directly related to this proposal. The Applicant has commissioned several reports addressing environmental issues: ® Geotechnical Engineering Report, Associated Earth Sciences, Inc. (AESI) 6118. Bulletin #050 — October 17, 2016 Page 3 of 32 k:\Handouts\Environmental Checklist FEDERAL WAY PUBLIC SCHOOLS Federal Wait Public Schools Educational Service Center (ESC) 33330 80 Avenue South Federal Way WA 90003 (253)945-2000 • Subsurface Investigation Report, PBS Engineering and Environmental, Inc., (PBS) 9124 • Acoustical Analysis, Stantec, 9118 • Traffic Impact Analysis, Transportation Engineering North West (TENW)11118 • Arborist Report; pending, for submittal during permitting/plan review e Site LightinglPhotometric Analysis; pending, for submittal during permittingiplan review The Applicant is fully committed to developing mitigation measures on any environmental concerns identified by these studies. Figure 2 - Aerial View - Existing Lake Grove Elementary School 9. Do you know whether applications are pending for governmental approvals of other proposals directly affecting the property covered by your proposal? If yes, explain. The City of Federal Way will be conducting a Process Ill, Use Approval review process in accordance With review criteria established in the Federal Way Revised Code (FWRC), Section 19.65.100(2). SEPA review is typically processed concurrently with Process 111 applications. As Lead Agency, FWPS will process this SEPA checklist in advance of permitting with the City of Federal Way. The Lakehaven Water and Sewer District will review the Lake Grove construction plans as they relate to water and sewer availability, system capacity and infrastructure improvements necessary to adequately serve the new facility. The South King Fire and Rescue District will review plans to assure adequate fire flow and hydrant facilities are available, as well as the installation of sprinkler and alarm systems and assuring adequate fire access is maintained for emergency vehicles. Both of these Bulletin #050 — October 17, 2016 Page 4 of 32 k:lHandouts\Environmental Checklist Federal Way Public Schools Educational Service Center (ESCI FEDERAL WAY 33330 901 Avenue South PUBLIC SCHOOLS Federal Way WA 98003 (253) 945-2000 agencies' approval processes will occur concurrently with the City of Federal Way plan review and construction permitting processes. The Puget Sound Clean Air Agency (PSCAA) will require a Notice of Demolition be submitted along with the results of a professional asbestos survey of the existing facility (and proposed mitigation — if necessary). PSCAA will also require a Notice of Construction be filed. South King Fire and Rescue District (SKFRD) will conduct a thorough review of project plans; including, but not limited to, fire prevention measures, the installation of fire alarm and suppression equipment, the location and capacity of both water lines and hydrants (fire flow), and overall site plan design as related to the designation of fire lanes and emergency vehicle access. 10. List any government approvals or permits that will be needed for your proposal, if known. The list below is a preliminary assessment of permitting likely to be required for this project, pending further review. • Process III / Project Approval • Concurrency • Right -of -Way Modification Waiver (if necessary) • Master Land Use Application • NPDES General Permit (DOE) • Demolition Permits (PSCAA) • Demolition Permits (City) • Building and Construction Permits (Federal Way) • Retaining Wall Permits (if regUired) • MEP - Mechanical, Electrical and Plumbing Permits • Sign Permits (if required) • Stormwater Covenants • Water I Sewer Permits and Developer Extension Agreement (Lakehaven) The following codes will be enforced under the FWRC for this project: • International Building Code (IBC), 2015, as amended by Washington State Amendments WAC 51-50 • International Mechanical Code (IMC), 2015, as amended by Washington State Amendments WAC 51-52 ® Uniform Plumbing Code (UPC), 2015, as amended by Washington State Amendments WAC 51-56 & WAC 51-57 International Fire Code (IFC), 2015, as amended by Washington State Amendments WAC 51 -54 • International Residential Code, 2015, as amended by Washington State Amendments WAC 51.51 • National Electric Code (NEC), 2017 • Accessibility Code (ICC/ANSI A117.1), 2009 • Washington State Energy Code, 2015 WAC 51-11 Bulletin #050 — October 17, 2016 Page 5 of 32 k:\Handouts\Environmental Checklist Federal Way Public Schools Educational Service Center (ESC) FEDERAL WAY 33330 90 Avenue south PUBLIC SCHOOLS Federal Way WA 98003 (253)945-2000 11. Give brief, complete description of your proposal, including the proposed uses and the size of the project and site. There are several questions later in this checklist that ask you to describe certain aspects of your proposal. You do not need to repeat those answers on this page. (Lead agencies may modify this form to include additional specific information on project description.) Lake Grove Elementary School is located on the existing 9.43-acre site at 303 SW 308th Street in Federal Way, Washington. The site is comprised of two relatively flat areas bisected by a significant wooded slope. The large lower area is occupied by the existing school building, and the smaller upper area is occupied by grass playfields, which are approximately 30-feet higher in elevation than the school building The site is served by SW 308th Street, running east -west along the north edge of the property. The school is mostly surrounded by single family residential development. A professional off ice zone (PO) and multifamily zone (RM-1880) are located immediately to the east of the site. A heavily wooded area abuts the site to the south and west. Mirror Lake is roughly two blocks away to the southwest. The school property is zoned residential single family (RS-7.2), with schools being a permitted use. The existing school building, portable structures and associated parking areas sit within the northern portion of the overall school property while playfields occupy the entire southern portion of the site. Vehicular access to and from the site is currently via two driveways off of Southwest 308th Street, which is located directly north of the school property. Circulation through the site is via a one-way drive aisle, which provides access to existing parking areas. The westemmost vehicular access point provides ingress to the site and the easternmost driveway serves as the egress point from the site. Figure 3 - Proposed Site Plan - New Lake Grove Elementary School The existing Lake Grove Elementary School currently serves approximately 450 scholars from pre- kindergarten through 5th grade. The existing school was originally constructed in 1965 with various additions and modernizations over the years with the last remodel project occurring in 1985. The existing facility is comprised of a single -story building with classrooms arranged along a double Bulletin #050 — October 17, 2016 Page 6 of 32 k1Handou1s%Environmenta1 Checklist Federal Way Public Schools Educational Service Center (E5C) FEDERAL WAY 33330$"Avenue South PUBLIC SCHOOLS Federal Way WA 98003 (253)945-2000 loaded corridor (47,654 SF), along with four portable classroom buildings (3,584 SF). The existing building occupies a significant portion of the buildable area on the lower portion of the site. Given the limited site access and available area to build a new school while the existing school is occupied, FWPS decided the school will be housed off site during construction. At this time, a specific location has not yet been determined. 12. Location of the proposal. Give sufficient information for a person to understand the precise location of your proposed project, including a street address, if any, and section, township, and range, if known. If a proposal would occur over a range of area, provide the range or boundaries of the site(s). Provide a legal description, site plan, vicinity map, and topographic map, if reasonably available. While you should submit any plans required by the agency, you are not required to duplicate maps or detailed plans submitted with any permit applications related to this checklist. The project site is located at 303 SW 30811 Street in Federal Way, Washington, and is illustrated on the included vicinity map. An abbreviated legal description, parcel number and lot size are provided: APN: 072104-9180 Legal: NE 41,., Section 04, Township 21 N, Range 04 E Lot: 9.43 Acres The project will include the demolition of the existing school facilities and the construction of a new 60,322 SF elementary school campus onsite serving 600 scholars; it is anticipated the final site plan will include the construction of new playfields, paved parking and access drives, landscaping, pedestrian pathways, exterior lighting and other typical improvements outlined in preliminary plans submitted in support of this application. Lake Grove Elementary Logistics Plan Demo Phase IJ Figure 4 - Demolition Logistics - Lake Grove Elementary School Bulletin #050 — October 17, 2016 Page 7 of 32 01-1and outs\Environmental Checklist FEDERAL WAY PUBLIC SCHOOLS Federal Way Putt€ic Schools Educational Service Center (ESC� 33330 8?11 Avenue Sooth Federal 'Way WA 98003 (253) 945-2000 Lake Grove Elementary Logistics Plan Construction Phase : I4`I�yI1II ' • F:r— Rb 19— SlGnnlr�r,^r 71�.'" L.�rd�n�Tn,.M_Parvr� 'prcf�'•r:'y -10 ROd� J FuIL. _�lor, t' li J Figure 5 - Construction Logistics - Lake Grove Elementary School B. ENVIRONMENTAL ELEMENTS 1. Earth a. General description of the site: [ ] Flat [ ] Rolling [ ] Hilly [ ] Steep Slopes [ ] Mountainous [ X ] Other See (b) below for clarification. b. What is the steepest slope on the site (approximate percent slope)? Topographically, the overall site generally slopes from northeast to southwest from a high elevation point of approximately 395 feet in the northeast corner of the site. However, within the specific vicinity of the existing school building the topography is relatively flat with minimal, if any, grade difference. Additionally, a vegetated ridge line, which represents the most steeply Bulletin #050 — October 17, 2016 Page 8 of 32 k:\Handouts\Environmental Checklist y FEDERAL WAY ■ PUBLIC SCHOOLS N Federal Way Public Schools Educational Service Center (ESC) 33330 8e' Avenue South Federal Way WA 98003 (253)945-2000 sloped area on the site, separates the school building and associated parking and play areas from the higher elevation playfields to the east. Parking areas are located in the front of the building and on the east side of the site. A west - facing slope ranging in heightfrom 20-feetto 30-feet separates the lower school building, adjacent driveways and play areas from the upper baseball fields. The slope is naturally vegetated with mature evergreen trees, deciduous trees, shrubs and grass areas; likely originated during original grading and leveling of the building pad and field areas. Pending further plan review, the new structures will be built close to existing grades, where possible, without the need for deep excavations and/or thick structural fill. c. What general types of soils are found on the site (for example, clay, sand, gravel, peat, muck)? If you know the classification of agricultural soils, specify them and note any agricultural land of long-term commercial significance and whether the proposal results in removing any of these soils. According to soil data obtained from the USDA Web Soil Survey, soils on the majority of the site consist primarily of Arents, Alderwood material 6 to 15 percent slopes (AmC). To a lesser extent, site soils also consist of Alderwood gravelly sandy loam, 15 to 30 percent slopes (AgD), which is predominantly concentrated in a limited area within the site's eastern extremities. Furthermore, based on preliminary findings deduced from geotechnical explorations conducted on the site, subsurface soils are comprised of fill soils underlain by Vashon lodgement till. These identifiable soil types are typically considered poor infiltration receptors. Please refer to our submittal package and the copy of, "Subsurface Exploration, Geologic Hazard and Preliminary Geafechnical Engineering Report," prepared by Associated Earth Sciences, Kirkland, Washington, dated June 2018, for a detailed discussion of these issues. Bulletin #050 — October 17, 2016 Page 9 of 32 k:\Handouts\Environmental Checklist FEDERAL WAY PUBLIC SCHOOLS Federal Way Public Schools Educational Service Center (ESC) 33330 8"' Avenue South Federal Way WA 98003 (253)945-2000 Figure 6 - Perspective Rendering (NW Corner) - Proposed Lake Grove Elementary School d. Are there surface indications or history of unstable soils in the immediate vicinity? If so, describe. To the best of the Applicant's knowledge, there are nos urface indications of unstable soils and/or a history of soil instability manifesting itself, either onsite or in the immediate vicinity. Current plans call for construction of the new facility in the same general location as the existing building; effectively distancing itself from the designated EHA area. Required buffer reductions will be addressed during review of final construction plans, if needed. e. Describe the purpose, type, total area, and approximate quantities and total affected area of any filling, excavation, and grading proposed. Indicate source of fill. Preliminary civil engineering plans project grading activity may result in extensive quantities ( CY / cubic yards) of cut and fill; current estimates indicate 1,841 CY cut and 18,592 CY of fill. All existing fill beneath proposed foundations may need to be removed and replaced with structural fill (16,751 CY) or controlled density fill; extending laterally by a distance equal to the depth of overexcavation. Precise amounts of cubic yards cut and the amount and source of fill will be determined later; the Applicant is committed to using approved sources of clean fill materials. f. Could erosion occur as a result of clearing, construction, or use? If so, generally describe Temporary erosion is a possibility associated with construction activity. The Applicant's finalized permit plans will include a temporary erosion and sedimentary control (TESC) plan; implemented using the best management practices (BMPs) associated with erosion prevention and control. Bulletin #050 — October 17, 2016 Page 10 of 32 k:\Handouts\Environmental Checklist FEDERAL WAY PUBLIC SCHOOLS Federal Way Public Schools Educational Service Center (ESC) 33330 8" Avenue South Federal Way WA 90003 (253) 945-2000 The TESC system will be designed in accordance with the City of Federal Way erosion control requirements, in addition to, the 2016 KCSWDM and the Department of Ecology Construction Stormwater Pollution Prevention Plan (SWPPP). TESC facilities will include at a minimum: stabilized construction entrance, silt fencing, catch basin inserts, interceptor swales, sediment ponds or tanks, and other miscellaneous sediment control facilities. The existing pavement will likely be used for stabilized construction access and staging until such time as it needs to be removed for construction of the proposed improvements. Temporary sediment settling tanks will be used for sediment control. The construction documents will include the requirements for the contractor to manage the construction site in accordance with BMPs. This will include marking the clearing limits; limiting the site area that is exposed and stabilizing exposed areas with mulch or other approved measures; protecting slopes and managing any water from construction dewatering. g. About what percent of the site will be covered with impervious surfaces after project construction (for example, asphalt or buildings)? Based on the preliminary civil engineering plans prepared for this submittal, approximately twelve percent (12.1%) will be building coverage by the new Lake Grove Elementary School, with a total of thirty-four percent (34%) of the site covered by impervious surfaces (asphalt paving, driveways, sidewalks, walkways, etc.). With maximum lot coverage for structures established at seventy-five percent (75%) under the FWRC, this project falls well below the maximum threshold. However, these are preliminary estimates and subject to change as a result of permittinglplan review. h. Proposed measures to reduce or control erosion, or other impacts to the earth, if an Specific measures to reducelcontrol erosion will be detailed on the TESL plan referred to in (f) above; these measures will likely focus on erosion potential associated with construction activity. Once the project is completed, the chances of significant erosion are virtually nil. 2. Air a. What types of emissions to the air would result from the proposal during construction, operation, and maintenance when the project is completed? If any, generally describe and give approximate quantities if known. To the best of the Applicant's knowledge, the project will not produce any significant impacts andlor result in emissions of particulates or noxious odors either during construction or future operations. During construction minimal impacts may be realized as particulates (dust, dirt, etc.) are released into the air on a limited basis. A reliable estimate of quantities cannot be formulated at this time. b. Are there any off -site sources of emissions or odor that may affect your proposal? If so, generally describe. None; Not Applicable. The only potential source lies in the emissions from vehicular traffic using the adjacent rights -of -way. c. Proposed measures to reduce or control emissions or other impacts to air, if any: Bulletin #050 — October 17, 2016 Page 11 of 32 kAHandouts\Environmental Checklist Federal Way Public Schools Educational Service Center (ESQ FEDERAL. WAY 33330 a Avenue South PUBLIC SCHOOLS Federal Way WA 003 (253) 943-2-2404 Controlled watering of the ground will reduce particulates emitted during construction; the use of mufflers and spark arresters will help minimize vehicle emissions from construction equipment. 3. Water a. Surface Water 1) Is there any surface water body on or in the immediate vicinity of the site (including year- round and seasonal streams, saltwater, lakes, ponds, wetlands)? If yes, describe type and provide names. If appropriate, state what stream or river it flows into. The closest surface body of wateris Steel Lake;-�dcated within % mile of the school, south of South 304u, Street. Lake Dolloff iS foc-ated-att"out % mile southwest of the school�on the east side of Interstate 5: The site' is located within the,Fi Iebos Creek drainage_Oasin, which ultimately discharges to the Puget Sound. 2) Will the project require any work over, in, or adjacent to (within 200 feet) the described waters? If yes, please describe and attach available plans. No; Not Applicable. 3) Estimate the amount of fill and dredge material that would be placed in or removed from surface water or wetlands and indicate the area of the site that would be affected. Indicate the source of fill material. Under the Applicant's proposal, no filling or dredging of designated wetlands is associated with this project. 4) Will the proposal require surface water withdrawals or diversions? Give general description, purpose, and approximate quantities if known. Alone; Not Applicable. Under the Applicant's proposal, no surface water withdrawals andlor diversions are associated with this project; surface runoff will be controlled onsite. 5) Does the proposal lie within a 100-year floodplain? If so, note location on the site plan. The site is located in Zone X; an area with minimal flood hazard. 6) Does the proposal involve any discharges of waste materials to surface waters? If so, describe the type of waste and anticipated volume of discharge. None; Not Applicable. Under the Applicant's proposal, no discharge of waste materials to surface waters is associated with this proposal. b. Ground Water 1) Will groundwater be withdrawn from a well for drinking water or other purposes? If so, give a general description of the well, proposed uses and approximate quantities withdrawn from the well. Will water be discharged to groundwater? Give general description, purpose, and approximate quantities if known. Bulletin #050 — October 17, 2016 Page 12 of 32 k:\Handouts\Environmental Checklist y FEDERAL WAY ■ PUBLIC SCHOOLS P Federal Way Public Schools Educational Service Center (ESCI 33330 Sa' Avenue South Federal Way WA 98003 (253)945-2000 Under the Applicant's proposal, no groundwater will be withdrawn, nor is any discharge to groundwater resulting from this project. Excavation related to construction may reveal the existence of perched groundwater deposits in the substrate; requiring removal through a dewatering process (often requiring a separate permit). 2) Describe waste material that will be discharged into the ground from septic tanks or other sources, if any (for example: domestic sewage; industrial, containing the following chemicals; agricultural; etc.). Describe the general size of the system, the number of such systems, the number of houses to be served (if applicable), or the number of animals or humans the system(s) are expected to serve. Under the Applicant's proposal, no discharge of waste materials to ground waters is associated with this construction project. c. Water Runoff (including stormwater) 1) Describe the source of runoff (including stormwater) and method of collection and disposal, if any (include quantities, if known). Where will this water flow? Will this water flow into other waters? If so, describe I The site is located within tlleTLawer Pu et 5ounddrrainage basin, which ultimately discharges to the Puget Sound. Paved impervious surfaces are the only potential source of stormwater runoff; runoff will be collected through the onsite stormwater system and conveyed to the designated point of discharge. Stormwater runoff in the existing condition is collected in catch basins on site and conveyed to a catch basin in the southwest corner of the project site. From there, stormwater flows south and then west to ultimately discharge into Puget Sound. The proposed stormwater strategy and design will not alter the existing downstream drainage patterns or path from the sate. Please refer to the civil engineering plans included with this submittal for more detailed information on collection, conveyance and discharge. The site is located within the five- and 10-year wellhead capture zone, which is designated as a critical aquifer recharge area under the provisions of the Growth Management Act (Chapter 36.70A RCW). Per FWRC 19.145.490, FWPS will be required to submit a hazardous materials inventory with building and construction permitting. In addition, with a proposed landscaped area in excess of 10,000 square feet, FWPS will need to prepare an operations and maintenance manual using best management practices (BMPs), per FWRC 19.145.510. The site is also within the Tacoma Smelter Plume detect area and FWPS is required to obtain soil analysis conducted by an independent consultant to detect and quantify the presence of historic arsenic and/or lead contamination. 2) Could waste materials enter ground or surface waters? If so, generally describe. Under the Applicant's proposal, the project has been designed to eliminate and/or limit any potential for groundwater contamination. While excessive amounts are highly unlikely, there is a possibility for surface runoff conveying unspent hydrocarbons and/or other surface contaminants from paved surfaces onsite into groundwater. 3) Does the proposal alter or otherwise affect drainage patterns in the vicinity of the site? If so, generally describe. Bulletin #050 — October 17, 2016 Page 13 of 32 k:\Handouts\Environmental Checklist Federal Way Public Schools Educational Service Center (ESCI FEDERAL WAY 33330 811 Avenue South PUBLIC SCHOOLS Federal Way WA 200 tf (253) g43-2000 To the best of the Applicant's knowledge, drainage patterns for other properties in the vicinity will not be affected by this proposal. The Applicant's preliminary drainage plan demonstrates specific improvements designed to monitor drainage patterns and control runoff. d. Proposed measures to reduce or control surface, ground and runoff water, and drainage impacts, if any. The stormwater design will be developed in compliance with the 2016 King County Stormwater Design Manual (KCSWDM) as adopted by the City of Federal Way, as well as the City's Addendum to the 2016 KCSWDM dated January 8, 2017. The site is located within the Lower Puget Sound drainage basin, which ultimately discharges to the Puget Sound. Stormwater runoff in the existing condition is collected in catch basins on site and conveyed to a catch basin in the southwest corner of the project site. From there, stormwater flows south and then west to ultimately discharge into Puget Sound. In the developed condition, this downstream course will not be altered. Since the existing impervious surface coverage for the site is 35.75%, the project meets the 35% threshold requirement to classify as a "redevelopment." Additionally, water quality treatment is required for all pollution generating impervious surfaces, and the project must also comply with jurisdictional flow control requirements. Soil conditions in the site area are not conducive to infiltration, eliminating options to use bioretention facilities or permeable pavement to mitigate stormwater runoff from the site. Since on -site infiltration is infeasible, the stormwater management strategy for water quality treatment and flow control will encompass the use of large sand filter systems and detention facilities. The site resides within a City designated Enhanced Basic Water Quality Treatment area. In order to meet this level of required treatment, sand filter facilities are proposed for various areas of the site to treat runoff from target pollution generating impervious surfaces such as the parking lots, drive aisles, service areas, and synthetic turf playfield. The site is also located within a designated Flood Problem Flow Control Area. To address this level of required flow control, a detention facility (26,000 CF) is currently proposed to be located under the westernmost parking lot area. A second detention vault (18,000 CF) is proposed under the open lawn area located adjacent to the south of the school facility. Stormwater mitigation strategies for detention in the playfields (sand filters) include utilizing the sub -grade beneath the fields as detention, with a connection to a flow control structure. The estimated detention volume for this system is 17,000 CF. FWPS will be reviewing options for stormwater water quality and flow control as part of the permittinglplan review process. Please refer to the preliminary drainage plan prepared as part of the design package as a means of identifying the Applicant's proposal to addressicontrol surface water runoff. Bulletin #050 — October 17, 2016 Page 14 of 32 01-landouts\Environmental Checklist y FEDERAL WAY ■ PUBLIC SCHOOLS N 4. Plants a. Check the types of vegetation found on the site: Federal Way Public Schools Educational Service Center (ESC) 33330 SO' Avenue South Federal Way WA 98003 (253)945-2000 X ] Deciduous tr a! a en, other X ] Evergreen tre fir, cedar, pine other X ] Shrubs X ] Grass ] Pasture ] Crop or grain ] Orchards, vineyards or other permanent crops. ] Wet soil plants: cattail, buttercup, bulrush, skunk cabbage, other ] Water plants: water lily, eelgrass, milfoil, other ] Other types of vegetation b. What kind and amount of vegetation will be removed or altered? A west -facing slope ranging in height from 20-feet to 30•feet separates the lower portion of the site (school building) from the upper portion (playfields). The slope is naturally vegetated with mature evergreen trees, deciduous trees, shrubs and grass areas; likely originated during original grading and leveling of the building pad and field areas. Pending further plan review, the new structures will be built close to existing grades, where possible, without the need for deep excavations andforthick structural fill. Under the Applicant's proposal, and given the nature of the project, a number of trees and shrubs may be removed to accommodate the project design. Specific details on species, size and location of trees and shrubbery slated for removal will be detailed on preliminary demolition and landscape plans - to be finalized at a later date. Where possible, existing trees and shrubs may be incorporated into the proposed plan. figure I - rroposed Landscaping nan - %aKe urove wemenrary bcnoo► Bulletin #050 — October 17, 2016 Page 15 of 32 k:\Handouts\Environmental Checklist Federal Way Public Schools Educational Service Center (ESCI k4 FEDERAL WAY 33330 61' Avenue South PUBLIC SCHOOLS Federal Way WA 98003 (253) 945-2006 c. List threatened and endangered species known to be on or near the site To the best of the Applicant's knowledge, there are no known threatened or endangered species onsite or in the immediate vicinity. d. Proposed landscaping, use of native plants, or other measures to preserve or enhance vegetation on the site, if any: The Applicant's plans for landscaping onsite will feature trees and shrubs native to the Pacific Northwest — including a mixture of deciduous and coniferous trees and drought -tolerant plants where appropriate. Please refer to the preliminary landscape plans for a schedule of proposed plantings. e. List all noxious weeds and invasive species known to be on or near the site. To the best of the Applicant's knowledge, there are no noxious weeds and/or invasive species on or near the site. 5. Animals a. List any birds and other animals which have been observed on or near the site or are known to be on or near the site. Examples include: [ X q��al awks, eagles, heron, other: ] s: Deer, bear, elk, beaver, other: [ ] Fish: Bass, salmon, trout, herring, shellfish, other: b. List any threatened and endangered species known to be on or near the site. To the best of the Applicant's knowledge, there are no threatened or endangered species known to be on or near the site on a regular basis. c. Is the site part of a migration route? If so, explain. The project site is located within the Pacific Flyway: well documented as a migratory route for numerous species of birds and waterfowl. d. Proposed measures to preserve or enhance wildlife, if any: None; Not Applicable. e. List any invasive animal species known to be on or near the site. To the best of the Applicant's knowledge, there are no invasive animal species known to be on or near the project site. Bulletin #050 — October 17, 2016 Page 16 of 32 k:lHandouts\Environmental Checklist �y FEDERAL WAY ■ PUBLIC SCHOOLS 6. Energy and Natural Resources Federal Way Public Schools Educational Service Center (ESC) 33330 8* Avenue South Federal Way WA 98003 (253)945-2000 a. What kinds of energy (electric, natural gas, oil, wood stove, solar, wind) will be used to meet the completed project's energy needs? Describe whether it will be used for heating, cooling, manufacturing, storage, etc. Under the Applicant's proposal, either or both electric andlor gas energy will serve to meet the project's anticipated needs. b. Would the project affect potential use of solar energy by adjacent properties? If so, generally describe the degree of impact. To the best of the Applicant's knowledge, this project would not interfere with the potential use of solar energy by adjacent properties. c. What kinds of energy conservation features are included in the plans for this project? List other proposed measures to reduce or control energy impacts, if any: To the best of the Applicant's knowiedge, energy conservation features will be incorporated into the project's design and will be detailed during the permitting phase of the project— including the submittal of required energy worksheets. 7. Environmental Health a. Are there any environmental health hazards, including exposure to toxic chemicals, risk of fire and explosion, spill, or hazardous waste that could occur as a result of this proposal? If so, describe. To the best of the Applicant's knowledge, no projected environmental health hazards are or will be associated with this proposal. The risk of fire is not expected to exceed that associated with other similar educational facilities; in fact current design standards will almost certainly provide a major upgrade over existing levels of protection in terms of fire prevention. 1) Describe any known or possible contamination at the site from present or past uses. To the best of the Applicant's knowledge, there is no known contamination onsite, nor is there any reason to anticipate contamination exists from present andlor past educational uses. While performing due diligence on this project, an underground storage tank (UST) was discovered onsite, approximately 2'I2 feet below ground surface (BGS), with a base located about 101/2 feet BGS. Approximately 8 feet in diameter and 23 feet long; given the proximity to the boiler room, indications are the tank was used for fuel oil storage. Studies conducted on soil samples revealed no petroleum impacted soils in any areas surrounding the UST, to a depth of 20 feet BGS. The UST will be removed as part of the project and in accordance with best management practices for UST removal, FWPS will perform a tank closure assessment when the UST is decommissioned and removed. Please refer to the subsurface investigation report included with this submittal for further details. The Applicant remains fully committed to complete cieanuplremediation of the soils onsite as part of the Lake Grove demolition and UST closure processes. Bulletin #050 — October 17, 2016 Page 17 of 32 0Handouts)Environmental Checklist �y FEDERAL WAY ■ PUBLIC SCHOOLS N Federal Way Public Schools Educational Service Center (ESCI 33330 901 Avenue South Federal Way WA 99003 (253) 9,45-2000 The site is located within the Tacoma Smelter Plume detect area and FWPS is required to obtain soil analysis to detect the presence of historic arsenic and/or lead contamination; FWPS has commissioned the appropriate analysis which will be included with this submittal. The site is also located within the five- and 10-year wellhead capture zone; designated as a critical aquifer recharge area under the provisions of the Growth Management Act (Chapter 36.70A RCW). Per FWRC 19.45.490, FWPS will be required to submit a hazardous materials inventory with building and construction permitting. In addition, with a proposed landscaped area in excess of 10,000 square feet, FWPS will need to prepare an operations and maintenance manual using best management practices (BMPs), per FWRC 19.145.510. The presence of asbestos within existing structures will be evaluated with an asbestos survey conducted by qualified professionals; required mitigation will be provided in terms of removal from the site. Evidence of the study and findings will be provided to Federal Way as part of the demolition permit process and the required Notice of Demolition will be filed with PSCAA, demonstrating compliance with their requirements as well. 2) Describe existing hazardous chemicals/conditions that might affect project development and design. This includes underground hazardous liquid and gas transmission pipelines located within the project area and in the vicinity. To the hest of the Applicant's knowledge, there are no hazardous chemicals or conditions -- including transmission pipelines • present onsite or in the immediate vicinity which could affect project development andlor design. 3) Describe any toxic or hazardous chemicals that might be stored, used, or produced during the projects development or construction, or at any time during the operating life of the project. Under the Applicant's proposal, aside from materials used during the educational process, no toxic or hazardous chemicals will be routinely stored, used and/or produced during the project's construction and/or during routine operations as an educational facility. With the site located within the five- and 10-year wellhead capture zone; designated as a critical aquifer recharge area under the provisions of the Growth Management Act (Chapter 36.70A RCW), per FWRC 19.145.490, FWPS will be required to submit a hazardous materials inventory with building and construction permitting. 4) Describe special emergency services that might be required. To the best of the Applicant's knowledge, special emergency services will not be required by this project on a regular basis; either during construction or as a matter of routine operation. 5) Proposed measures to reduce or control environmental health hazards, if any: With no environmental health hazards and/or projected impacts identified at this stage of the development process, excluding possible asbestos mitigation, and pending evidence to the contrary, no mitigation measures are required or proposed. Bulletin #050 — October 17, 2016 Page 18 of 32 k:\Handouts\Environmental Checklist FEDERAL WAY PUBLIC SCHOOLS b. Noise Federal Way Public Schoois Educational Service Center (ESCI 33330 80 Avenue South Federal Wiry WA 98003 (253)945-2000 1) What types of noise exist in the area which may affect your project (for example: traffic, equipment, operation, other)? Minimal noise impacts may originate from school -related traffic on the adjacent public and/or private rights -of -way; the Applicant does not anticipate any adverse impacts affecting the project. Traffic on public rights -of -way are exempt from FWRC noise regulations. The north fagade of the school will be located further from SW 30811, Street traffic under the current plan; resulting in less traffic noise for scholars and staff. Various occupant -related noises — such as playground noise, building operations noise and safety equipment noise -- will remain a factor for neighboring properties, but the Applicant expects volumes and/or frequency to replicate historical patterns. Playground noise between 9:00 AM and 10:30 PM is exempt from FWRC noise regulations (FWRC 7.10.020). 2) What types and levels of noise would be created by or associated with the project on a short-term or a long-term basis (for example: traffic, construction, operation, other)? Indicate what hours noise would come from the site. Short-term increases in noise levels will result from normal construction activity. The Applicant projects decibel levels associated with this activity will range between 57.89 €}BA and be limited to those hours where construction activity is permitted under Federal Way code. Construction noise is typically mitigated through the use of noise attenuation devices installed on heavy equipment. On a long-term, regular basis, the only exception to typical right-of-way traffic noise will be related to any concentration of school bus traffic associated with the educational use. 3) Proposed measures to reduce or control noise impacts, if any: With no exceptional long-term impacts identified at this stage of the development process, and pending evidence to the contrary, no mitigation measures are required or proposed. Significant changes are not expected from the new campus beyond what is currently experienced. 8. Land and Shoreline Use a. What is the current use of the site and adjacent properties? Will the proposal affect current land uses on nearby or adjacent properties? If so, describe. The current use of the site as an educational facility over a number of years has ingratiated the use into the character of the adjacent residential neighborhood. After the construction activity is completed, the new facility will continue and embellish upon the traditional role of a neighborhood school and continue the District's participation in the growth of Federal Way as a community. b. Has the project site been used as working farmlands or working forest lands? If so, describe. How much agricultural or forest land of long-term commercial significance will be converted to Bulletin #050 — October 17, 2016 Page 19 of 32 k:lHandouts\Environmental Checklist �y FEDERAL WAY ■ PUBLIC SCHOOLS N Federal Way Public Schools Educational Service Center (ESC) 33330 80 Avenue South Federal Way WA 98003 (253) 945-2000 other uses as a result of the proposal, if any? If resource lands have not been designated, how many acres in farmland or forest land tax status will be converted to nonfarm or non -forest use? The site has not been used as either working farmland or forest lands in recent memory. As such, given the intent to maintain an educational use, the Applicant's proposal will obviously not remove any agricultural or forest land of commercial significance from Federal Way's inventory of land resources. 1) Will the proposal affect or be affected by surrounding working farm or forest land normal business operations, such as oversize equipment access, the application of pesticides, tilling, and harvesting? If so, how: None; Not Applicable. c. Describe any structures on the site. The site is currently occupied by an educational facility of approximately 51,238 SF including related accessory structures and site improvements. The existing conditions plan provided with this submittal will indicate specific locations of structures, facilities and site improvements. d. Will any structures be demolished? If so, what? Under the Applicant's proposal, all structures currently existing onsite will be demolished; please refer to the attached demolition logistics plan for additional information. e. What is the current zoning classification of the site? The site is currently zoned as R5 7.2 under the provisions of Federal Way's Zoning Code; additional information on applicable bulk regulations is provided in the table below. LAKE GROVE j I CLASSIFICATION REQUIRED I PROPOSED SETBACKS FRONT (NORTH) 50' 177' SIDE (EAST) 50, 336' SIDE (WEST) 50' 50, REAR (SOUTH) 50' 86' MAX BUILDING HEIGHT: 55' FOR GYMS 35'-0" VERTICAL DISTANCE FROM AVERAGE BUILDING ELEVATION TO MID POINT 30' FOR ALL OTHER 33'-0" BETWEEN EAVE & RIDGE OF HIGHEST STRUCTURES PRINCIPAL SLOPED ROOF MAX LOT COVERAGE BY 75% MAX 37% STRUCTURES (FWRC 19.200 090) REQUIRED PARKING EXISTING PROPOSED 1 PER EMPLOYEE 60 Bulletin #050 — October 17, 2016 Page 20 of 32 k:\Handouts\Environmental Checklist Federal Way Public Schools Educational Service Center (ESC) FEDERAL WAY 33330 8m Avenue South PUBLIC SCHOOLS Federal Way WA 900 {353}945-2000 f. What is the current comprehensive plan designation of the site? The site is designated for Single -Family / High Density land use under the provisions of the Federal Way Comprehensive Plan. g. If applicable, what is the current shoreline master program designation of the site? None; Not Applicable. h. Has any part of the site been classified as a critical area by the city or county? If so, specify. With the site located within the five- and 10-year wellhead capture zone; designated as a critical aquifer recharge area under the provisions of the Growth Management Act (Chapter 36.70A RCW), per FWRC 19.145.490, FWPS will be required to submit a hazardous materials inventory with building and construction permitting. Pending further plan review, slopes located onsite may pose a geological hazard and potentially be eligible for designation as Erosion Hazard Areas (EFTA); primarily located along the east, south and west perimeters, areas associated with the mature tree buffer. i. Approximately how many people would reside or work in the completed project? There is no residential component associated with this project; when completed, the project is estimated to employ under 100 employees as either administrative staff, teachers andlor related professionals. j. Approximately how many people would the completed project displace? Lacking any residential component, there is no displacement associated with the Applicant's proposal; as part of project design, the District is formulating temporary facilities forthe student population. k. Proposed measures to avoid or reduce displacement impacts, if any: The Applicant is the current owner of the subject property. With no residential component, and thus no displacement, no mitigation is required. I. Proposed measures to ensure the proposal is compatible with existing and projected land uses and plans, if any: The very nature of the Applicant's proposal — demolishing an antiquated educational facility in order to construct a new, modem replacement facility on the same site in approximately the same location — is conducive to ensure compatibility with existing and projected land uses under any comprehensive or neighborhood plan. m. Proposed measures to reduce or control impacts to agricultural and forest lands of long-term commercial significance, if any: None; Not Applicable. 9. Housing Bulletin #050 — October 17, 2016 Page 21 of 32 k:\Handouts\Environmental Checklist Federal Way Public Schools Educational Service Center (ESC) FEDERAL WAY 33330 80 Avenue South PUBLIC SCHOOLS Federal way WA 003 (253) 943-2-2000 a. Approximately how many units would be provided, if any? Indicate whether high, middle, or low-income housing. None; Not Applicable. Under the Applicant's proposal, there is no residential component. b. Approximately how many units, if any, would be eliminated? Indicate whether high-, middle-, or low-income housing. None; Not Applicable. Under the Applicant's proposal, there is no residential component. c. Proposed measures to reduce or control housing impacts, if any: With no impacts identified at this stage of the development process, and pending evidence to the contrary, no mitigation measures are required or proposed. 10. Aesthetics a. What is the tallest height of any proposed structure(s), not including antennas; what is the principal exterior building materials) proposed? The Applicant's current proposal calls for a building height of approximately thirty-five (35) feet at the structure's highest point. The detailed preliminary architectural plans submitted with this application provide a visual and tabular schedule of building materials proposed for use on this facility. b. What views in the immediate vicinity would be altered or obstructed? None; Not Applicable. c. Proposed measures to reduce or control aesthetic impacts, if any: The project is subject to an Administrative Design Review conducted by the City of Federal Way as part of their Process 1111Project Approval process. Under FWRC Chapter 19.115, the project must present overall design continuity through the use of similar elements throughout the project, such as architectural style and features, materials, colors and textures. Building and site design for all institutional uses are guided by FWRC 19.115.100. With no impacts identified at this stage of the development process, and pending design review andlor evidence to the contrary, no mitigation measures are required or proposed. Bulletin #050 — October 17, 2016 Page 22 of 32 k:lHandouWEnwronmenta1 Checklist FEDERAL WAY PUBLIC SCHOOLS SW 303TH ST if � — • e I.+i' +n .n I:r Federal Way ffubiic Schools Educational Service Center (ESCI 33330 9"1 Avenue South Federal Way WA 98003 (253)945-2000 7 1 , I 1 1 4 PROP BUILDING ' r.• I l 1 ADJACENT RESIDENT'A ONE DIAGRAM Figure 8 - Community Design Guidelines Diagram - Lake Grove Elementary School 11. Light and Glare a. What type of light or glare will the proposal produce? What time of day would it mainly occur? The Applicant's proposal is not projected to produce any light or glare resulting in spillover onto adjacent properties as currently designed. Exterior lighting fixtures would be required for public safety and onsite security for students, employees and visitors. The Applicant will be providing a site lighting plan/photometric analysis during the building permit process which will document the potential effect of the projects use of focused, shielded exterior lighting fixtures to eliminate glare and/or spillover. b. Could light or glare from the finished project be a safety hazard or interfere with views? To the best of the Applicant's knowledge, as designed, spillover or glare will not result from this project; therefore not creating a safety hazard and/or interfering with any views. c. What existing off -site sources of light or glare may affect your proposal? The only sources likely to be inflicted on the site would come from vehicle headlights on adjacent rights -of -way; an occurrence which could be at least partially addressed through onsite perimeter landscaping. Bulletin #050 — October 17, 2016 Page 23 of 32 k:\Handouts\Environmental Checklist Federal Way Public Schools Educational Service Center i;ESCj k-t FEDERAL WAY 33330 80 Avenue South PUBLIC SCHOOLS Federal way WA (253) 9da-2000-2000 d. Proposed measures to reduce or control light and glare impacts, if any: With no impacts identified at this stage of the development process, and pending evidence to the contrary, no mitigation measures are required or proposed - aside from the Applicant's commitment to a site lighting plan/photometric analysis and the use of shielded fixtures, as discussed above 12. Recreation a. What designated and informal recreational opportunities are in the immediate vicinity? To the best of the Applicant's knowledge, there are no designated or informal recreationai opportunities in the immediate vicinity - aside from playgrounds associated with the existing educational facility. b. Would the proposed project displace any existing recreational uses? If so, describe. None; Not Applicable. The Applicant's proposal for a replacement educational facility will eventually include playgrounds and/or exterior recreational facilities to replace those facilities which will be demolished to facilitate the new construction. c. Proposed measures to reduce or control impacts on recreation, including recreation opportunities to be provided by the project or applicant, if any: With no long-term impacts on recreational opportunities identified at this stage of the project, and pending evidence to the contrary, no mitigation measures are required or proposed. 13. Historic and Cultural Preservation a. Are there any buildings, structures, or sites, located on or near the site that are over 45 years old listed in or eligible for listing in national, state, or local preservation registers ? If so, specifically describe. The existing Lake Grove Elementary School building was built in 1965, over fifty-three (53) years ago. However, to the best of the Applicant's knowledge, none of the buildings, structures and/or sites located onsite and/or in the immediate vicinity have been formally catalogued or are considered to be architectural, cultural or historic resources. As part of an ongoing commitment to the community, FWPS recognizes the importance of cultural preservation and the District's role in dedicating and preserving space for community use. b. Are there any landmarks, features, or other evidence of Indian or historic use or occupation? This may include human burials or old cemeteries. Are there any material evidence, artifacts, or areas of cultural importance on or near the site? Please list any professional studies conducted at the site to identify such resources. To the best of the Applicant's knowledge, there are no landmarks, features and/or other evidence of Native American or historic use or occupation onsite or in the immediate vicinity. No material evidence, artifacts or areas of cultural importance have been identified. Bulletin #050 — October 17, 2016 Page 24 of 32 k:\Handouts\Environmental Checklist Federal Way Public Schools Educational Service Center (ESC) FEDERAL WAY 33330 801 Avenue South PUBLIC SCHOOLS Federal Way u003 (253) 949d3-2-2000 Given the lack of known resources or demonstrated potential for discovery, the Applicant has not retained a professional assessment of the site. If any unanticipated discoveries are made during construction, the Applicant will halt construction and consult trained professionals regarding the identification of such materials and consult with them on methodology and protocols to proceed with construction. c. Describe the methods used to assess the potential impacts to cultural and historic resources on or near the project site. Examples include consultation with tribes and the department of archeology and historic preservation, archaeological surveys, historic maps, GIS data, etc. To the best of the Applicant's knowledge, given the lack of evidence regarding known cultural andfor historic resources onsite or in the immediate vicinity, and the limited potential for future discoveries, additional research was deemed unnecessary d. Proposed measures to avoid, minimize, or compensate for loss, changes to, and disturbance to resources. Please include plans for the above and any permits that may be required. With no identified cultural or historic resources having been identified, aside from a commitment involving unanticipated discoveries and having protocols in place should any be uncovered, no additional measures have been implemented, nor are any proposed. Bulletin #050 — October 17, 2016 Page 25 of 32 kAl-IandoutslEnvironmental Checklist FEDERAL WAY ■ PUBLIC SCHOOLS N 14. Transportation Federal Way Public Schools Educational Service Center (ESC) 33330 8ei Avenue South Federal Way WA 98003 (253)945-2000 a. Identify public streets and highways serving the site or affected geographic area and describe proposed access to the existing street system. Show on site plans, if any. The Applicant originally commissioned a preliminary traffic impact analysis (TIA) in July 2018 to assess existing conditions, and assist in the preparation of a final site plan, pending a final version of the TIA. A final TIA was prepared by Transportation Engineering North West (TENW), Seattle WA, dated November 16, 2018, and has been added to this submittal. Vehicular and pedestrian access to the site primarily originates from SW 30811' Street, a two-lane east -west roadway; using access drives provided onsite. North south streets in the immediate vicinity include V1 Avenue South, to the east, and Si*" Avenue SW, to the west. Additional two- lane east -west roadways in the vicinity include SW 304tn Street, S. 30511 Street and SW 3121" Street; however none of these streets provide direct access to the Lake Grove site. 23'd Avenue South is a two-lane minor collector. Several two-lane unchannelized north -south roadways provide direct access to the school from SW 30411, Street and S 3051" Street -1n Place SW, 2"d Avenue SW, 3rd Avenue SW and 4th Avenue SW. b. Is the site or affected geographic area currently served by public transit? If so, generally describe. If not, what is the approximate distance to the nearest transit stop? To the best of the Applicant's knowledge, the site is not directly accessible to public transit users. The closest public transit stops appear to be located on SW 30P Street and 8th Avenue South, approximately'/2 mile from the site, and South 3121h Street and 60 Avenue South. c. How many additional parking spaces would the completed project or non -project proposal have? How many would the project or proposal eliminate? The Lake Grove campus currently provides forty-two (42) parking spaces; the Applicant's proposal is to increase parking by adding eighteen (18) spaces, for a total of sixty (60) spaces. The new buildings will be located to serve as a buffer between the vehicular access to the sites and the play areas. The automobile drive for parent and visitor traffic at Lake Grove Elementary School is located off SW 308th Street at the northwest corner of the site aligned with 4th Avenue SW. This drop-off loop is developed to accommodate a long on -site queuing area. The bus and service drive is also off SW 308th Street utilizing the existing curb cut between 3rd Avenue SW and 2nd Avenue SW. Parking is distributed between a west lot, serving visitors and community users, and a north lot which will be used primarily by staff. Building service access and the service yard is located off the bus loop. Fire lane access to the rear of the school uses the parent drop-off loop, passing around the southwest corner of the new school building; a fire truck hammerhead turnaround is incorporated into the hard surface play area south of the gym and multi -purpose spaces. Bulletin #050 — October 17, 2016 Page 26 of 32 k:\Handouts\Environmental Checklist �y FEDERAL WAY R PUBLIC SCHOOLS Federal Way Public Schools Educational Service Center (ESC) 33330 861 Avenue South Federal Way WA 98003 (253)945-2000 Will the proposal require any new or improvements to existing roads, streets, pedestrian, bicycle or state transportation facilities, not including driveways? If so, generally describe (indicate whether public or private). The Applicant originally commissioned a preliminary traffic impact analysis (TIA) in July 2018 to assess existing conditions, and assist in the preparation of a final site plan, pending a final version of the TIA. A final TIA was prepared by Transportation Engineering North West (TENW), Seattle WA, dated November 16, 2018, and has been added to this submittal; including a project description, a description of existing transportation conditions within the immediate site vicinity, methodology used to derive the trip generation estimate, trip distribution, traffic operational analysis of key off -site intersections and site driveway intersections under cumulative impacts, and identification of any transportation mitigation measures to offset traffic impacts The TENW study indicates under existing conditions, all intersections serving Wildwood were operating at LOS C or better, with volume/capacity ratios (vlc) within the standards for signalized (1.2 vlc) and unsignalized (1.0 vlc) intersections. The report did take note of two conditions which will be addressed with construction of the new facility; the lack of crossing guards during AM - peak pick-upldrop-off and existing driveways failure to generally meet AASHTO sight distance requirements. Please refer to the study for a detailed discussion of TENW's recommendations. To the best of the Applicant's knowledge, and pending further permittinglplan review, no added streets will be required. Existing site access is provided via four site driveways onto SW 308th Street. Proposed site access would be provided via two existing site driveways onto SW 308th Street, one accessing the west parking lot and the other accessing the east parking lot. These site driveways would be converted to full access site driveways. All site driveway intersections would operate at LOS B or better with a vlc ratio under 1.0 during the AM peak hour and at LOS C or better with a vlc ratio under 1.0 during the PINI peak hour with or without the project in 2020. The existing two center site driveways onto SW 308th Street would be removed. Student pick- upldrop off would continue to be provided via the west parking lot. Bus pick-up and drop-off would be relocated to the east parking lot - Proposed frontage improvements will include standard elements consisting of drive lane, parking lane, planter strip and sidewalk. To meet ADA requirements, ADA ramps will be provided at the curbs for intersections as needed. As part of the project, roadway frontage improvements to include curb, gutter, sidewalk and landscaping would be required along SW 308th Street, which could also require right-of-way dedication. Construction activity will either repair or replace existing site improvements such as curb, gutter and sidewalk as required by code, and upgrade perimeter landscape to full compliance with code. e. Will the project or proposal use (or occur in the immediate vicinity of) water, rail, or air transportation? If so, generally describe. No; Not Applicable. f. How many vehicular trips per day would be generated by the completed project or proposal? If known, indicate when peak volumes would occur and what percentage of the volume would be trucks (such as commercial and non -passenger vehicles). What data or transportation models were used to make these estimates? Bulletin #050 — October 17, 2016 Page 27 of 32 k:\Handouts\Environmental Checklist �y FEDERAL WAY ■ PUBIIC SCHOOLS N Federal Way Pubfic Sc110015 Educational Service Center (ESC) 33330 80 Avenue South Federal Way WA 98003 (253) 945-2000 Given the structured schedule - arrivals (AM Peak) and dismissals (PM Peak) - associated with educational activity, the Applicant feels existing traffic patterns and volumes will generally remain consistent with data associated with the existing facility. Changes in enrollment for the new facility, along with related staff increases, may affect trafficttrip-related data in the future. A complete transportation impact analysis of the proposed Lake Grove facifity will be prepared in conjunction with Federal Way's Process 1111Project Approval review. For an enhanced understanding of current LOS conditions, please refer to the data in the tables below. 2013 Existing AM Pecsk Intersection Levels of Service _ StVdy lnters.ecti n LOS Oplay (sect IC Rofio h I SW 108't' S! / 8II- Ave SW AW.Si A 'A C'_23 '.2 - r 3Je l! S: l <trr. Ave SW / 'Nest Dr Ea Left - - - Vr6 Lef; A 0.0's r:B I A 9.9 Sty B I J. UG2 F3 - 1`s^+' 3'3)811 5' r 'NHSt !'fIU'f7'.vO.y - 2 WB t eft .A 7.`- k4 SW 238"+ S' 3 Ave SW ! C'�er}tef Lr W13 Left a. 111B B , - 0, C.7 SB � g ° 1.3 t-02 =`5 SW .33F - 3t / L4=i Df'• _'r.cv Tab A 0.3 v 1a �G-SW33ro!"S-/;11Aee-S EBr B i.c IL ViB I C NB L.!� A. 7.9 C 05 5B L.,rJ, A 7.8 - - %�h.rcrC- r..4-i1-,e,-rux '''l4Tz-Ir;r-r[Mlrr nnnri2f D 2018 Existing PM Peok Intersection Levels of Service 5 insersecfiort Lp5 D sec V/C Ratio L1rrs;crnalaeo tn!erseciians If1-SIN 3C8''St/8'"Ave SJy AV6 I A 7.3 0.14 #2 - SW 3 8` S` / 4', A°.e SbV / Wes' Dr E8 L cft A 7.8 0.00 'NB Lei, A. 8-+ O.CT'J N13 R 13.3 0.iU S B B 12.6 0.06 #t3 • SVV _30,&'l St / Fast Driveway - 2 WB Leii 1 A 7.9 0.01 NB B 1 .8 0.02 `4 - 3W ;iOR'' St / 3; = Avr? .3W j ;-'enter Dr FB Let= A 7.7 n 01 vv8 Lett I A 8.0 0.03 NB B 12.6 0•06 SB B 12.0 0-03 SW 308-- St J Eost Or:vewcy N8 B 10.11 0'.10 ft!5 'N 3C8-`+ 5t / 1 'Ave S E3 812.0 0.13 WB i C 2..2 C1.17 NB Left A 8.2 0.Q4 SR I.e`r I A 80 0.01 Bulletin #050 - October 17, 2016 Page 28 of 32 k:\Handouts\Environmental Checklist y FEDERAL WAY ■ PUBLIC SCHOOLS Federal Way Public Schools Educational Service Center (ESC) 33330 80 Avenue South Federal Way WA 96003 (253) 945-2000 The tables below reflect the number of additional trips generated and the revised intersection levels of service calculations, for the horizon year 2020, based on current Federal Way standards. Lake Grove Elementary School "trip Generation Summary Time Period in out Total 'vveeia_ioy Daily 142 142 284 Weekday A`'+1 Peaic Hcur of Gcne!a'or 53 45 98 vkee4dcy I r' Peak HoLr e` G-.jretofor 23 28 51 Weedny PM PL-ak Hour ct ArJjc:c:err Slr<el TraNc i 2 11 26 2020 AM Peak Intersection Level of Service Impacts 2020 Without Project 2020 With Project Delay v/C Delay V/C 51 ;ntersaclion LOS Isecl Rolio LOS Srcl Ralio elnsir�r.•,e:.�re! IrYerst*e{tors r I - S.A. 3^8"' St I b- Ave 5'N A"NS A 7,4 ',24 A 7.6 025 =2 S'rt' 3CSr'' St J 4'- Ave S'N J Wie->t Dr EB Lef- - - - w6 _<<'1 A 7 6 001 A 7,8 0 03 N• 5 IC-0 3.05 B 1 1 4 0.12 t S3 I F. If', 2 0-'._12 B 1 1-7 0 03 5 SW 31F5'" St /East Lrry vdcy W3 Lell it A 7B 0.0 N3. A 9.3 0.09 B 11.9 0.26 -'6 -SW-'.^.3` I'•'AVC•S --6 ? 1` 1 414 R 1i.9 a.'S vis _; 19,4 0.12 C 21.5 0. 8 1148lefi A 3.0 0.06 A 8,0 0.07 SB ieII l A 7.8 0.00 - - A 7.8 - O.C4 rrrrr ir■ uu a iiw�+ire w �evx: -High 7: CrxF c` 4ond; - Soccic =cper12-rorso_��'.•-�n �cs-�-cn Ba.-a, YJ7G ru 2020 PM Peak intersection Level of Service Impacts 2020 Without Project 2020 With Project Delay V/C Delay V/C Studv Intersection LQ Isecl Ratio L91 lsec Rat,, ijrs trnn,5rnr! Intn}rs. z t;ons I 1 - SW 3f--8' 331 / 8' Ave SW AWJS A 7.3 0.14 A 7,3 0-14 -2 - SW3C8 51 J 4 - Avr• SW J Yrest Dr EB Lcf- A 7.8 0.00 A 7.9 G 00 'NB LeR , A 8.1 C 00 A 8.2 0-02 1`13 B 13.4 0. I 1 B ' :1.8 r) 17 33 B 13.G C.06 B '4.1 0-Cls "5 - SW St / En 1 >vcwny '43 Leff - -- A 7.9 0.09 N8 8 10.1 Q, 11 8 123 0 22 '=6-SIN 3$' 5tJI AveS E6 8 12A 0.15 8 12.3 O. WS C 26-9 0.19 D 28,0 0-21 NRLeft A 83 004 A 8.3 005 S8 Le€i A 8-0 C,01 A 8.0 0-0I ' SOL�-a' Hlghwa•=x=uFy.:.or:-.---Seaga?9CJ•12C9 rr�_;�r.ortvion?=s=�rcha•,_�-talc_ Bulletin #050 - October 17, 2016 Page 29 of 32 01-landouts\Environmental Checklist �r FEDERAL WAY ■ PUBLIC SCHOOLS K Federal Way Public Schools Educational Service Center (ESC) 33330 801 Avenue South Federal Way WA 98003 (253) 945-2000 The existing gross floor area built at the Lake Grove Elementary School comprises approximately 51,238 square -feet (including the main building and portable structures) and serves approximately 550 students. The proposed gross floor area of the new school is approximately 60,322 square -feet with a student capacity to serve up to 600 students. g. Will the proposal interfere with, affect or be affected by the movement of agricultural and forest products on roads or streets in the area? If so, generally describe. No; Not Applicable. h. Proposed measures to reduce or control transportation impacts, if any: With no impacts identified at this stage of the development process, and pending evidence to the contrary, aside from required frontage improvements, no mitigation measures are required or proposed. Should increases in student enrollment related to expanded capacity be realized, traffic impact fees may be assessed at a rate of $2.00 per square foot of gross floor area (GFA) in accordance with current Federal Way code. However the Applicant cautions that as an educational facility with variable enrollment and staffing, traditional trip generation models may not accurately reflect the actual impacts associated with the new elementary school. 15. Public Services a. Would the project result in an increased need for public services (for example: fire protection, police protection, public transit, health care, schools, other)? If so, generally describe. Given the nature of the Applicant's proposal — replacing an outdated educational facility with a modern, updated facility — the Applicant does not project any increase in the demand for public services — either during demolition, construction or future operations. b. Proposed measures to reduce or control direct impacts on public services, if any. With no impacts identified at this stage of the development process, and pending evidence to the contrary, no mitigation measures are required or proposed. 16. Utilities a. Circle utilities currently availabl electricity, natural gas, water, refuse service, telephone, sanitary sewt�)septic system, All required utilities are currently available at the site; including, but not limited to, electricity, natural gas, water and sewer service, refuse and recycling service, telephone, cable television and other communication services. Lakehaven Water and Sewer District will be providing Certificates of Availability for both water and sewer later in the review/permitting process. Negotiations regarding the extent of specific Bulletin #050 —October 17, 2016 Page 30 of 32 k:\Handouts\Environmental Checklist y FEDERAL WAY PUBLIC SCHOOLS P Federal Way Public Schools Educational Service Center (ESC) 33330 P Avenue South Federal Way WA 98003 (253)945-2000 system improvements needed to provide adequate capacity are ongoing and will be concluded via a Developer Extension Agreement executed between FWPS and Lakehaven. The site currently receives sewer service from a single connection point (SSCP 5183); wastewater is conveyed for sewage treatment via the use of a grinder pump. The onsite portion of proposed sewer improvements will see a new line extending through the parking field; connecting to the new school building. Preliminary analysis on the adequacy of existing water lineslservice indicate two current points of service connection; one for domestic water and a second for irrigation purposes. To meet the fire flow required by South King Fire and Rescue (2,750 GPM) indicates replacement of an existing 6-inch main in South 3081h Street with a 12-inch water main, at minimum, from 1st Avenue South, westward to 41h Avenue South. An additional 12-inch main may be required onsite as well. Pending further permitting/plan review analysis and the installation of proposed improvements onsite to facilitate new connections and to remove existing infrastructure, capacity of all public and franchise utilities is presumed to be adequate. b. Describe the utilities that are proposed for the project, the utility providing the service, and the general construction activities on the site or in the immediate vicinity which might be needed. Please refer to the civil engineering plans provided with this submittal — particularly the cover sheet where utilities and contacts are typically itemized, and the preliminary utility plans (water, sewer and stormwater) for specific details on proposed utility connections and the extent of necessary public improvements. Bulletin #050 — October 17, 2016 Page 31 of 32 k:\HandoutslEnvironmental Checklist FEDERAL WAY PUBLIC SCHOOLS C. SIGNATURE Federal Way Public Schools Educational Service Center (ESC) 33330 80 Avenue South Federal Way WA 96003 (253)945-2000 The above answers are true and complete to the best of my knowledge. I understand that the lead agency is relying on them to make its decision. Signature: Name of Signee: Robert McNeill Position and Agency/Organization: Senior Planner, Barghausen Consulting Engineers, Inc. Date Submitted: September 25, 2018; revised January T, 2019 Bulletin #050 — October 1 T 2016 Page 32 of 32 k:lHandoutslEnvironmental Checklist CBRElHEERY I FEDERAL WAY PUBLIC SCHOOLS ID Task Duration Task Name Duration Start Finish Predef_ees— _ %Complete 2.nd Half 1st Hall 2nd Han Ist Hall 2nd Half sp NM 1 660 days MIRROR LAXE/LA%E GR0VE/WI LOWDOO 660 days Mon 2/19/18 Fri 8/213/20 7% 2 r� 3 1% 63 days Ed Spec Development 63 days Fri 319fle Tue 6/5/18 99% r'-1 4 d -4 0 days Ed Spec Harvest LGV 0 days Mon 3/26/18 Mon 3126/18 100% a 3/26 5 >✓ -% 0 days Ed Spec Harvest MIR 0 days Tue 3/27/18 Tue 3/27/18 100% 0 3/27 6 5/ 14 0 days Ed Spec Harvest W IL 0 days Tue 3/27/18 Tue 3/27/18 100% 3/27 7 ✓ -% 1 day Draft Programmatic Requirements 1 day Fri 3/9/18 Fri 3/9/18 100% 8 q/ -4 1 day Feasibility Study 1 day Fri 3/16/18 Fri 3/16/18 100% 9 1y/ -4 1 day Preliminary Cost Model 1 day Fri 5/4/18 Fri 5/4/18 100% 10 k/ .4 28 days Draft Ed Specs 28 days Wed 3/28/18 Fri 5/4/18 5 100% 11 ; 3 days Ed 5pc Recommenda Lions 3 days Mon 5/7/18 Wed 5/9/18 10 100% t2 1/ -4 5 days Supt Review 5 days Thu 5/10/18 Wed 5/16/18 11 100% 13 1 day Supt Recommendation 1 day Thu 5/17/18 Thu 5/17/18 12 100% 14 y 0 days Final Ed Specs to School Board 0 days Thu 5/17/18 Thu 5/17/113 13 0% s 5/17 15 0 days Board Approval 0 days Tue 6/5/18 Tue 6/5/18 14FS+13 days 0% 6/5 16 17 n 130 days Draft Design Standards 230 days Tue 4/24/18 Mat 10/22/18 10% r--I 18 :.2 4 109 days Capital Projects Team Drafts Standards 109 days Tue 4/24/18 Fri 9121/18 11% * ' 19 n 2 wits Supt Review 2 wks Mon 9/24/18 Fri 10/5/18 18 0% 20 14 1 day Sups Recommendai ion to Board 1 day Mon 10/22/18 Mon 10/22/18 19FS+2 wks 0% 21 14 0 days Board Approval 0 days Mon 10/22/18 Mon 10/22/18 20 0% y 10/22 22 23 1/ -% 19 days Design Oversight Canrnittee (DOC) 18 days Mon 3/5/18 Thu 3/29/18 100% t1 24 1/ -4 0 days DOC Meeting #1 0 days Mon 3/5/18 Mon 3/5/18 100% 0 3/5 25 V -4 0 days DOC Meeting 42 0 days Mon 3/12/18 Mon 3/12/18 100% 0 3/12 26 d -4 0 days DOC Meeting #3 0 days Mon 3/19/18 Mon 3/19/18 100% 0 3/19 27 0 days DOC Meeting 04 0 days Thu 3/29/18 Thu 3129/18 100% 0 3/29 28 n 29 a/ -4 16 days Design Review Committee (DRQ 16 days Mon 4/16/18 Tue 5/8/18 100% M 30 a4 0 days DRC Meeting #1(Complete) 0 days Mon 4/16/18 Mon 4/16/18 100% 0 4/16 31 ps 0 days DRC Meeting N2 (Complete) 0 days Mon 4/30/18 Mon 4/30/18 100% 0 4130 32 0 days DRC Meeting #3 (Complete) 0 days Tue S/8/18 Tue 5/8/18 100%, 0 5/8 Task - -. %y' Project Summary Manual Task C I Slam -only E Deadline Project ESs draft schedule split • • • • • • • • • • • • • • . Inactive Task Duration -only Fnish-only ] Progress Date Fri 1/4/19 Milestone 4 Inaceve Milestone Manual Summary Rollup Werra] Tasks Manual Progress Summary Inactive Summary Manual Summary External Miles — Page 1 4 FEDERAL WAY PUBLIC SCHOOLS CBREJHEERY 10 4) T&,t Duration Task Name Duration Start Finish 2nd Half 19 Half 2nd Half- 1st Half Ind Half 1st HO 34 aP 300 days GCCM Approval and Procurement 300 days Mon 2/19118 Fr14132/19 39 is wJ —1 15 days Prep PRC Application 15 days Mon 4/2/18 Fri 4/20118 100% 36 yf -4 0 days Submit Application 0 days Fri 4/20/18 Fri 4/20/18 35 100% s 4/20 37 4 0 days PRC Hearing 0 days Thu 5/24/18 Thu 5/24/18 100% p, s/24 15 a4 0 days PRC Approval Letter 0 days Wed 6/6/18 Wed 6/6/18 37FS+2 wks 100% 6/6 34 aI "4 2 days Advertising & RFP Distribution 2 days Thu 5/24/18 Fri 5/25/18 37 100% 40 ✓ n 3 its GCCM Responses 3 wks Man 5/28/18 Fri 6/15/18 39 100% 41 ✓ 2 days Interviews 2 days Thu 6/28/19 Fri 6/29/18 40F5+8 days 100% 42 1/ e4 5days Capital Projects Team Summary and Recommendation 5days Mon 7/2/18 Fri 7/6/18 41 100% 43 ,f % 4 days Notice of Intent to Award 4 days Mon 7/9/18 Thu 7/12/18 42 100% 44 ,,: 14 0 days Board Approval 0 days Tue 7/24118 Tue 7/24/18 43FS+8 days 100% Z, 7/24 45 V 14 0 days GCCM Award 0 days Tue 7/24/18 Tue 7/24118 44 100% 4r7/24 46 14 At A# �" r.a 4e V -4 1 day Meeting with Consultants 1 day Tue 5/29/18 Tue 5/29/18 300% 49 y/ -yr 33 days Pre-Appllation Meeting(s) 33 days Wed 5/30/18 Fri 7/13/18 48 100% 50 14 54 days Application Materials & SEPA Checklist Finalized 54 days Mon 7/16/18 Thu 9/27/18 49 22%' T n, St 0 days SEPA Review Application Submitted 0 days Thu 9/27/18 Thu 9/27/18 50 0% q 9/27 S2 14 2 days Completeness Determination issued 2 days Fri 9128/18 Mon 10/1/18 51 0%. 53 14 0 days Notice of Application Distributed 0 days Mon 10/1/18 Mon 10/1/18 52 0% * 10/1 s4 14 16 days Comment Period 16 days Tue 10/2/18 Tue 10/23/18 53 0% T ss ZA n 10 days Review and Revise SEPA 10 days Tue 12/25/18 Mon 1/7/19 0% -4 14 15 days Appeal Period 15 days Tue 1/8/19 Mon 1/28/19 55 0% T W 14 0days Final Completion 0days Mon 1/28/19 Man 1/28/19 56 0%, 'A 1/20 S8 14 59 14 r �1 6P 'S 2 wks Certify Gross Square Footage 2 wks Mon 6/4/18 Fri G115/18 100% 61 >,I -4 0 days D3 0 days Mon 9/3/18 Mon 9/3/18 100% 0, 9/3 62 4 3 wits D4 (OSPI) 3 wks Mon 9/3/18 Fri 9/21/18 61 0% X 61 -, 0days DS 0days Mon 1/7/19 Mon 1/7/19 0% s►1/7 61 19 4 wks D6 (OSPI) 4 wks Mon 1/7/19 Fri 2/1/19 63 0% I.1k - Pryerr Summary Manual Task -1 sud.only I Deadline Project: ESs draft schedule sold .......... Inacr Task Duration -only "'-T*' Finish -only Pmgress Date: Fri 1/4/19 Mawr 4 Inactive Wastone Manua15--y Rollup W,mal Tasks Manual Progress Summary r1 I..Iiw Summary Manual Summary r ---------1 External Milestone Page 2 Jar �1 FEDERAL WAY PUBLIC SCHOOLS ID O r-k. 65 m% 66 In 67 -4 66 14 69 70 71 a$ 72 71 y/ 74 1% 76 � 77 79 -. 79 _3 e1 � e4 87 4 E6 '4 69 90 91 92 e$ 93 !i 91 9s 3 4 96 14 Duration Task Name 3 days 07 2 wks D8 (OSPI) 0 days D9 4 wks D10 (OSPI) Duration Start Finish Predecessors 3 days Mon 2/4/19 Wed 2/6/19 64 2 wks Thu 2/7/19 Wed 2/20/19 65 0 days Fri 3/15/19 Fri 3/15/19 4 wks Fri 3/15/19 Thu 4/11/19 67 CBREJHEERY 1 I %Comclete 2W HAR 1st Half Ind Half 1st Half 2nd Hal •194 Hall O'7r Ok i 076 • Ali (tx k 23 wks SO Package Development 23 wks Mon 4/16/18 Fri 912VIS 16% + -=:'•' 0 days DRC Meeting LGV 0 days Tue 6/5/18 Tue 6/5/18 100% q 6/5 0 days DRC Meeting WIL/MIR 0days Wed 6/6/18 Wed 6/6/18 100% s 6/6 0 days DRC Meeting MIR/LGV/WIL(Concepts) 0days Tue 6/19/18 Tue 6/19/18 100% a 6/19 0 days DOC Meeting MIR/LGV/W IL (Concepts) 0 days Mon 6125/18 Mon 6125118 100% 0 6/25 0 days Architect SD Package Submita1 0 days Fri 9/21/18 Fri 9/21/18 71 0% + 9A7 6 days SD Package Cost Review 6 days Thu 9/13/18 Thu 9120118 76F5-7 days 0% 0 days Supt. Review/Approval of SD Package 0 days Fri 9/21/18 Fri 9/21/18 77FS-1 day,76FS 0% R @127 0 days Final SD Package for Review/Approval-Board&Submitted to City of Federal WO days Tue 9/25/18 Tue 9/25/18 78F5+3 days 0% 9/25 1 day M&O Meeting 1 day Mon 8/20/18 Mon 8/20/18 100% 1 day M&O Meeting 1 day Tue 8/21/18 Tue 8/21/18 80 100% 1 day Pre -Application Meeting with Federal Way Permit Center 1 day Thu 8/23/18 Thu 8/23/18 11�0j0% •� 37 days DO Package Development 37 days Wed 9/26/18 Thu 11/IS/I8 79 0% 1 day User Meeting (MIR) 1 day Tue 10/2/18 Tue 10/2/18 78FS+7 days 0%-I 1 day User Meeting (WIL) 1 day Wed 10/3/18 Wed 1013/18 86 0%' 1 day User Meeting (LGV) 1 day Thu 10/4/18 Thu 10/4/18 87 0% 1 day M&O meeting 1 day Mon 10/15/18 Mon 10/15/18 88FS+6 days 0% l day DRC(MIR) Iday Tue 10/16/18 Tue 10/16/18 89 0% 1 day DRC(WIL) 1day Wed 10/17/1B Wed 10/17/18 90 0% 1 day DRC (LGV) 1 day Thu 10/18/18 Thu 10/18/18 91 0% 1 day DOC (MLW) Materials and Finishes 1 day Tue 10/23/18 Tue 10/23/18 92FS+2 days 0% 13 days VE/LCCA/Pricing 13 days Wed 10/24/18 Fri 11/9/18 93 0% 77 1 day 100% DO Draft Package 1 day Mon 11/12/18 Mon 11/12/18 94 0% l day 100%DD Package Submit to Superintendent 1day Tue 11/13/18 Tue 11/13/18 95 0% Task -- -- P jest Summary Manual Task L.-=_=:-�='-. �:.3 Start -only C -ea.. �• Project: ESs draft schedule spit .................. Inactive Task Duration -only tiS:-.=;r.-�'� Fn.h-only 7 Pm9mss Date: Fri 1/4/19 MO.— • Inactive Milestone Manual Summary Rdlup Fxtemal Tasks Wi.-progress Summary Inactive Summ ary Manual Summary I E-mal Milestone ' Page 3 TJ FEDERAL WAY PUBLIC SCHOOLS 10 0 +ia* 97 4 96 -3 4 99 4 700 � 1Qt 102 4 103 4 104 4 1f15 4 106 4 107 4 11m 4 109 4 110 111 � 112. 4 113' 4 1Ta 115 4 116 117 118 4 119 4 120 4 121 4 122 -i 123 124 4 125 4 126 4 127 4 128 4 ceReJ rrr:ratr 1 Duration 'Task Name Duration Start Finish Predecessors %Complete 2nd Hall 1st Half 2nd Ha11 1st Hall 2nd Halt 1In Half 2 days 100% DD Package for Review (M&O, DOC and DRC) 2 days Wed 11/14,,S Thu 11/15/19 96 0% 0 days Board Review/Approval of DD Package 0 days Tue 11/20/18 Tue 11/20/18 97F5+3 days 0% r 11/20 C. 'Y N -7.7-:17"?Tf: 4 wks 90% CD Package (For Bid) 4 wks Wed 11/7/18 Tue 1214118 98F5-2 wks 0% 11 days Constructability Review 11 days Wed 11/21/18 Wed 12/5/18 101F5-2 wks 0% 11 days 90% CD Cost Estimate 11 days Wed 11/21/18 Wed 12/5/18 101F5-2 wks 0a% 1 day 90% CD Pkg Submit to Supt 1 day Thu 12/6/18 Thu 12/6/18 103 0% 1 day 90% CD Package Submit to M&O 1 day Fri 1217/18 Fri 12/7/18 104 0% 1 day 90% CD Pkg to DOC/DRC 1 day Mon 12/10/18 Mon 12/10/18 105 0% 1 day 90% CD FWPS Review and Approve 1 day Tue 12/11/18 Tue 12/11/18 106 0% 3 days 90% CD Package Board Approval 3 days Wed 12/12/18 Fri 12/14/18 107 0% 1 day? 100% CD Pkg to Supt 1day? Mon 2/19/18 Mon 2/19/18 0% 1 day? 100% CD Pkg to M&O 1 day? Mon 2/19118 Man 2/19/18 0% 1 day? 100% CD Pkg to DOC/DRC 1 day? Mon 2/19/18 Mon 2/19/18 0% 1 day? 100% CD Pkg FATS Review and Approve 1 day? Mon 2/19/18 Mon 2/19/18 0% 1 day? 100% CD Pkg Board Approval 1 day? Mon 2/19/18 Mon 2/19/18 0% t K - 0 days Presubmittal 0 days Wed 6/20/18 Wed 6/20/18 100% 4 wks Permit Application (From 90% CD Set) 4 wks Tue 2/5/19 Mon 3/4/19 101F5+8 days 0% 1 mon Federal Way Permit Center Review 1 mon Tue 3/5/19 Mon 4/1/19 117 0% 10 days Responses to Review Comments 10 days Tue 4/2/19 Mon 4/15/19 118 0% 0 days Resubmit to Permit Agency 0 days Mon 4/15119 Mon 4/15/19 119 0% 1 mon Permit Agency Review 1 man Tue 4/16/19 Man 5/13/19 120 0% 0 days Permit Issuance 0 days Mon 5/13/19 Man 5/13/19 121 0% 6 wks Submittals/Release Packages Coordination 6 wks Wed 12/5/18 Tue 1/15/19 101 ON 12 days GCCM Bid Packages 12 days Wed 1/16/19 Thu 1/31/19 125,101 0% 3 wks Bid Reviews/Leveling 3 wits Fri 2/1/19 Thu 2/21/19 126 0% 5 days MACC Review and Approval 5 days Fri 2/22/19 Thu 2/28/19 127 0% Task = P Ject Summary Manual Task L". :•_.".-" t Start -only, i Deadline Project: ESs draft schedule Split Inactive Task Durafion-Doty --.:. Fin'nh-Doty ]. Progress — Date: Fri 1/4/19 --tone O Inactive Milestone Manual Summary Rollup External Tasks Manual Progress Summary r -----1 Inactive Summary Manual Summary r ---------- I External Milestone r Page 4 t FEDERAL WAY PUBLIC SCHOOLS ID O Yask 129 1% 130 14 131 % 139 133 134 m4 11S 14 136 '4 131 13d U9 �, 140 M; W 11; Tt7 % 143 14 144 145 � 1A6 � 147 � iA6 � 149 '4 150 4 151 � 152 y 153 y 154 1SS 156 157 t56 114 1S9 160 Dnrarar/r Task Name Duratlgfl Start Finish Predecessors %Complete 2nd Hall 1st Hall 10 days MACC Contract Executed 10 days Fri 3/1/19 Thu 3/14/19 128 0°h 3 Wks Subcontractor/Supplier Awards 3 Wks Fri 3/15/19 Thu 4/4/19 129 0% 2 Wks Vacate Lake Grave & Wddwood 2 Wks Thu IV20119 Wed 713119 r 0% 10 days Mobilization 10 days Thu 7/4/19 Wed 7/17/19 133 0% 4 wks Demolition (Lake Grove & Wildood) 4 Wks Thu 7/18119 Wed 8/14/19 134 0% 4 Wks Abatement (Lake Grove & Wildood) 4 its Thu 7/11/19 Wed 8/7/19 135SS-1 wk 0% 9 mans Site/Civil/Grading 9 mons Thu 8/8/19 Wed 4/15/20 136 0% 2 mons Foundations 2 mons Thu 10/3/19 Wed 11/27/19 137FS-7 mons 0% 2 mons Structural Steel 2 mons Thu 10/31/19 Wed 12/25/19 138F5-1 mon 0% 1.5 mans Concrete 1.5 mons Thu 12/12/19 Wed 1/22/20 139FS-2 wks 0% 1 man Flaming 1 man Thu 1/23/20 Wed 2/19/20 140 0% 1 mon Envelope & Glazing 1 mon Thu 1/23120 Wed 2/19/20 140 0% 2 mons MEP Systems 2 mons Thu 2/20/20 Wed 4/15/20 142 0% 3 mons I nterior Construction 3mons Thu 2/20/20 Wed 5/13/20 141 MA 2 mons Finishes 2 mons Thu 4/30/20 Wed 6/24/20 144FS-2 Wks 0% 4 Wks FF&E 4 Wks Thu 6/25/20 Wed 7/22/20 145 0% 4 Wks Systems Commissioning 4 wks Thu 4/16/20' Wed 5/13120 143 0% 3 Wks Inspections 3 wks Thu 6/25/20 Wed 7/15120 145 0% 4 Wks Punch list Activities 4wks Thu 6/25/20 Wed 7/22/20 145 0% 0 days Building Substantial Completion 0 days Wed 7/22/20 Wed 7/22/20 149 0% 2 days Certificate of Occupancy 2 days Thu 7/16/20 Fri 7/17/20 148 0% 4 Wks Move and Occupy 4 Wks Mon 7/20/20 Fri 8/14/20 151 0% 6.5 mons Landscaping & Remaining Field Work 6.5 mons Thu 4/16/20 Wed 10/14/20 137 0% 0 days Site Substantial Completion 0 days Wed 10/14/20 Wed 10/14/20 153 0% 3 mons Closeout 3 mons Thu 9/17/20 Wed 12/9/20 150,154SS-1 mo, 0% 10 days Mobilization 10 days Fri 4/5/19 Thu 4/18/19 130 0% 2 Wks Site Prep/Safety 2wks Fri 4/12/19 Thu 4/25119 158FS-5 dsys 0% 9 rnona Site/Civil/Grading 9rt10lls Fri 4/26/19 Thu 1/2/20 1S9 0% CBREIHEERY 2nd Hall 1st Hall ,2nd Hall ;1st Hall T I r-.9t AVJ,31 + P 1W Summary - Manual Task C:rrSa'i "ICI Stan -only L Pe+dine Project: ESs draft schedule 5* •••••-•••••••••.. 1—t—Task Duration -only a7'r;:3ts- aJ Finbh-onty .! Vrq— Date: Fri 1/4/19 klaaal- -0 Inactive Mlestone Manual Summary Rollup External Tasks rapnsA Psc;Yns Summary f------ I Inactive Summary Manual Summary r-1 External Milestone Page 5 _ �� FEDERAL WAY PUBLIC SCHOOLS - - CBREIHE M 10 0 Task 0ant0nn Task Name Duration Start FWsh Fr dmessan %Complete �2nd HaH_ 1st Han _ _2nd Hall 1st Half '7.nd Han_ 19 Hall 161 2 mans Foundations 2 mans Fri 6/21/19 Thu 8/15/19 16OF5-7 mans 0% wa 162 14 2 mans Structural Steel 2 mans Fri 7/19/19 Thu 9/12/19 161FS-1 man 0% 163 4 1.5 mans Concrete 1.5 mans Fri 8/30/19 Thu 10/10/19 162FS-2 wks 09G 164 4 1 Mon Framing 1 Mon Fri 10/11/19 Thu 11/7/19 163 0% %5 4 1 man Envelope & Glazing 1 man Fri 11/8/19 Thu 12/5/19 164 0% i 166 4 2 mans MEP Systems 2 mans Fri 12/6/19 Thu 1/30/20 165 09C 167 4 3 mans Interior Construction 3 mans Fri 1/31/20 Thu 4/23/20 166 09(, Tito 16a 4 2 mans Finishes 2 mans Fri 1/17/20 Thu 3/12/20 166FS-2 wks 0%. s69 4 4 wks FF&E 4 wks Fri 3/13/20 Thu 4/9/20 168 0%, 17D 4 4 wks Systems Commissioning 4 wks Fri 4/10/20 Thu 5/7/20 169 0%' 171 4 3 wits Inspections 3 wits Fri 5/8/20 Thu 5/28/20 170 09G, a 172 4 4 wks Punchllst Activities 4 wks Fri 5/29/20 Thu 6/25/20 171 0%: 173 ;® 4 2 wks Vacate Existing Mirror Lake 2 wks Fri 6/19/20 Thu 7/2/20 01A 174 4 0 days Building Substantial Completion 0 days Thu 6/25/20 Thu 6/25/20 172 0%; 175 4 2 days Certificate of Occupancy 2 days Fri 6/26/20 Mon 6/29/20 174 0% 176 4 4 wks Move and Occupy 4 wits Tue 6/30/20 Mon 7/27/20 175 0%' 177 4 4 was Demolition of old Mirror Lake 4 wits Fri 7/3/20 Thu 7/30/20 173 04, 178 4 4 wks Abatement Old Mirror Lake Site 4 wks Fri 6/26/20 Thu 7/23/20 177SS-1 wit 0% 179 4 9 mans Landscaping & Remaining Field Work 9 mans Fri 1/3/20 Thu 9/10/20 160 0%;T 180 4 0 days Site Substantial Completion 0 days Thu 9/10/20 Thu 9/10/20 179 0% 181 4 3 mans Closeout 3 mans Fri 8/14/20 Thu IlIV20 174,18055-1 mo- 0% Task Project Summary Manual Task Start -only C Deadline L 1 Project: ESs draft schedule Sprit Inactive Task Dpafinn-only Flmsh-only ] Progress Date: Fri 1/4/19 M. es._ ! Inactive Milestone Manual Summary Rollup rsnernal Tasks Manual Progress Summary 1"-1 Inact1w Summary Manual Summary r --------- I Btemal Mils.. Page 6 C13REIHEMYI I FEDERAL WAY PUBLIC SCHOOLS 2nd Half - 1st Malt _- 2ndM•II lit Half- ,Ind tfaH ;1st HeR _ 2nd H,I( _ 1s1.Half -2nd Hatt 1rt Hall - _2nd Half tat Half_ 011AVAN 19HaR_ _ 2nd Haf 1stHalf WHO 1st Half 2nd HaR- -'1st HA 2nd )IaN 1st Ha1J__ god Half IAHalr =96— Task Prcd c Summary cD ProjeESs draft schedule spit • . . • Inacdve Task Date: Fri 1/4/19 Mdastnne s firs dveMll.2— Summary Inactive Summary M—al Task l t Start -only Dararm-my Fnish-mdy Manual Summary Rollup External Tasks Mam,1 Summary r -----1 Bmmal Milestone Page 7 C 7 Deadline a. Pmg— Manual Progress — -- - CBREIHEERY FEDERAL WAY J PUBLIC SCHOOLS ! 204a1[__ 1st -Hal[ _ TM Hd! 1st Hell 2nd-Half 1st Half _Znd HaN. 1sS.HaB znd Hnlf _ 1AHaH _: 2nd Hall lst HaH '2nd Hal[ 19HaN _ '2dH,H_ lstylaN -2nd Hal( .1st Half 2nd Half 1st Hoff 2rtd. Ha{I_ 1sl Half - 2nd Half 1sl Half_ f Task Pm*t Summary Project ESs draft schedule Split Inactlea Tazk Date: Fri 1/4/19 Milestone Inactive Mlestane summary Inactive Summary Manual Took 1 V Start -only Elt ti -only Fniol.ony Mama) Summary Rollup External Tasks Manual Summary r -----1 Wemal Milestone Page B [ Deadnne + 7 Pmg— — Mewal Pmg' — T - - -- - - - - -- ---CBREIEiEEERY FEDERAL WAY PUBLIC SCHOOLS 2nd Halt-1stHaH 20Hal( - _1slHalf __'2n414lll 1st HiN _-'2qd H,H 1st Half-';md.HallUS Half, f1V.l 1st Haa _ _2MH4-- 19Haa i2mLHeH_-1,LHaR _ 2qd H,N— 19H,IC .tad Hall '1st Hall 2nd Halt . 1st H,a _ 2m1Haa _ NHaa 1 Project ESs draft schedule Date: Fri 114/19 Task split M lesion. Summary PmjectSummary ... .......... lnacuve Task 1 In,cdve Milestone lma tive summary Manual Task I I Start -only Duratiom-only Fnuh-only Manual Summaryaullup Eatemal Tasks Manual Summary 00.emal MlleM,ne Page 8 C Deadline a 7 Pmgsess Manual pmg— FEDERAL WAY PUBLIC SCHOOLS 2adJI.IL -:1sj Half__ 2nd Half 15.l HPIf_ _2nd Half- '1stHalf .24d Sall •151 Half. 2mtKd1-.:1st KeLf -_2nd Hal[ 19 Hag _ 2d Had Tst Half _ 2nd Half 1st Halt _ 2mlHalf _11s[Half_- 2nd Half 1st Half Project: ESs draft schedule Date: Fri 1/4/19 Task 'kgnl5vmmary Spirt ..- rwi fatk Mlleslane ♦ i�.:lrra raiki:o^t Summary �1 Ir:fnti Sva.m.ry Manual Task l ! start -only lwrar -nay Finan-stay Manual Summary Rollup txtmral Tasks Marmal Summary 5rlernal Milessmre Page 8 D radnna Progress M-1Pros— CBREIHE W 6 CBREIHEERY FEDERAL WAY PUBLIC SCHOOLS lad HaC( JMHAIL 2Pd Half TsthalL TdMiq art HAf PM r1.4r +n HaR 7MHdf tIr H1H 2nO-aN___1AHal1_ '2rld Half._ 1st H.If 2nd Half_ 1stHalf _2d HaIL— 15t_ Half __. 2nd HaH '1st Half __.2gd_H,g 1.SHsIC. 2d Half_ 1,0A 1 Project ESs draft schedule Date: Fri 1/4/19 Taal ►).st Summay s➢Nr Inaltlrr T.ak Maaalax ♦ tNelhre aaaastGrl. Summary r�1 1r�cM Summary Mawal Task I I Start -any Duration -my Flri M—y Manual Summary Rollup � Fxtemal Tasks Mawal Summary 1�1 Ed —.I Milestone Page 6 C Deadr.- I progress Manual Progress FEDERAL WAY PUBLIC SCHOOLS 2ndHAf- _ •n Hpt '2nd HaR_ 1st HaR.._ 2ndflaR_ 1st Half _ !2nd Half_ 15t111R 2nd Half 1.1 am Task Project Summary Project ESs draft schedule spat Inactiveiask Date: Fri 1/4/19 M.'akona ♦ Inactive Mlkatuna Summary ^ Inactive Summary CBREIHEERY )aw Hatt Ist_He _ 2nd HaJL '1st Hay 12md Hay --- _I1 Hilt_ 2nd H.alf__ let HeR_ .20 Hal 1st Hal 2nd HaR_ 1st Hall__ 2nd Ha1L_ 1st HaR Manual Task t + Duradon-only Manual Summary Rallup Manual Summary �1 1 Page 9 FEDERAL WAY RESUBMITTED Department of PUBLIC SCHOOLS APR 3 0 2019 Maintenance & Operations TO: Department of EcoloWMM °I�-yDEV LELE oP E FROM: Mike Benzien, Executive Director of Maintenance and Operations PROJECT: Mirror Lake Elementary School, Lake Grove Elementary School, and Wildwood Elementary School SUBJECT: SEPA Mitigation Measures: The TIA identified additional mitigation measures to reduce the project impacts. DATE: April 26, 2019 This memorandum is regarding the Federal Way Public Schools capital bond projects SEPA Mitigation Measures. Specifically for Lake Grove Elementary School SEPA adding the information that has been identified in the latest TIA report for mitigation measures to reduce the project impacts. Adding the TIA wording to the SEPA for the TIA mitigation measures does not affect the overall compliance and/or does not create significant impacts. As projects move through the design process, there are adjustments to the TIA. In the schematic document phase of this project, the TIA mitigation measures shown in the SEPA were implemented, and as the project continue to evolve through the design process, additional TIA mitigation measures were added to design to reduce the project impacts. In the current construction document phase, these TIA mitigation masures have been included to reduce the project impacts. Therefore, Federal Way Public Schools, making this SEPA modification, by adding this wording change allows the project to be consistent with the construction documents. Mike Benzien Federal Way Public Schools Each Scholar: A voice. A dream. A BRIGHT future. 1211 S. 332"d St, Federal Way, WA 98003 1 p.253.945.5930 I f.253.945.59591 www.fwps.org FEDERAL WAY PUBLIC SCHOOLS RESUBMITTED APR 3 0 20l9 Department of Maintenance & Operations rrrY F FEDERAL WAY DOMMUN c TO: Department of Ecology FROM: Mike Benzien, Executive Director of Maintenance and Operations PROJECT: Lake Grove Elementary School SUBJECT: SEPA wording change for the drainage basin location. DATE: April 24, 2019 This memorandum is regarding the Federal Way Public Schools capital bond projects SEPA. Lake Grove Elementary School SEPA drainage basin location wording change from "The checklist indicates that the site is located near Steel Lake and Lake Dolloff, and within the Hylebos Creek Drainage basin". "The site is in the Lower Puget Sound drainage basin, and near Mirror Lake". Changing the SEPA wording for the location of the drainage basin from ''Hylebos Creek Drainage basin" to "Lower Puget Sound drainage basin, and near Mirror Lake" does not affect the overall compliance and/or does not create significant impacts. Including this information speaks to correctly identifying the drainage basin for Lake Grove Elementary School. In the schematic document phase of this project, the drainage basin was incorrectly identified. Therefore, Federal Way Public Schools, making this SEPA drainage basin location wording change allows the documents to properly reflect the correct information. Se- oej�c t Mike Benzien Federal Way Public Schools Each Scholar: A voice. A dream. A BRIGHT future. 1211 S. 332"d St, Federal Way, WA 98003 1 p.253.945.5930 I f.253.945.59591 www.fwps.org FEDERAL WAY Department of PUBLIC SCHOOLS RESUBMITTED Maintenance & Operations TO: Department of Ecology Grry OF FEDERAL WAY FROM: Mike Benzien, Execu i M�irector of Maintenance and Operations PROJECT: Mirror Lake Elementary School, Lake Grove Elementary School, and Wildwood Elementary School SUBJECT: SEPA Parking count section 14 (d) change wording for parking count from SEPA 14 (d) from 61 parking stalls to "60 parking stalls". DATE: April 24, 2019 This memorandum is regarding the Federal Way Public Schools capital bond projects SEPA Parking Count. Specifically for Lake Grove Elementary School SEPA parking wording change from "61 parking stalls to 62 parking stalls". Changing the SEPA wording for the parking count does not affect the overall compliance and/or does not create significant impacts. As projects move through the design process, there are adjustments to the parking. In the schematic document phase of this project, 61 parking stalls were indicated, and as the project continue to evolve through the design process, was able to increase. In the current construction document phase, 62 parking stalls is what the project has determined. Therefore, Federal Way Public Schools, making this SEPA parking count wording change allows the project to be consistent with the construction documents. 4al".4-1c � Mike Benzien Federal Way Public Schools Each Scholar: A voice. A dream. A BRIGHT future. 1211 S. 332"d St, Federal Way, WA 98003 1 p.253.945.5930 I f.253.945.5959 1 www.fwps.org RESU13MITTED FEDERAL WAY APR 3 0 2019 Department of PUBLIC SCHOOLS M ' t & O t' CFTY OF FEDEHgL WAY ain enance pera ions eXMMUNFTY DEVE PME.�'r TO: Department of Ecology FROM: Mike Benzien, Executive Director of Maintenance and Operations PROJECT: Mirror Lake Elementary School, Lake Grove Elementary School, and Wildwood Elementary School SUBJECT: SEPA Square Footage Update DATE: April 29, 2019 This memorandum is regarding the Federal Way Public Schools capital bond projects SEPA Square Footage. Specifically for Lake Grove Elementary School SEPA square footage wording change from "60,322 square feet vs. 63,590 square feet to 65,825 square feet". Changing the SEPA wording for the square footage does not affect the overall compliance and/or does not create significant impacts. As projects move through the design process, there are adjustments to the square footages. In the schematic document phase of this project, 60,322 square feet vs. 63,590 square feet was the project evolving through the design process. In the current construction document phase, 65,825 square feet is what this project has come to its conclusion. Therefore, Federal Way Public Schools, making this SPEA square footage wording change allows the project to be consistent with the construction documents. Mike Benzien Federal Way Public Schools Each Scholar: A voice. A dream. A BRIGHT future. 1211 S. 332"d St, Federal Way, WA 98003 1 p.253.945.5930 I f.253.945.59591 www.fwps.org SEPA RULES WAC 197-11-970 Determination of non -significance (DNS) MITIGATED DETERMINATION OF NON -SIGNIFICANCE Description of Proposal: Lake Grove Elementary School Replacement Applicant: Federal Way Public Schools No. 210 Location of Proposal: 303 SW 308d' Street, Federal Way, Washington 98023 Legal Description: Refer to Page 7 of State Environmental Policy Act (SEPA) — Environmental Checklist for Lake Grove Elementary School Replacement Lead Agency: Federal Way Public Schools No. 210After review of a completed environmental checklist and other information on file with the agency, the Federal Way School District No. 210 has determined this proposal will not have a probable significant adverse impact on the environment. An environmental impact statement (EIS) is not required under RCW 43.2 1 C.03 0(2)(c). This information is available to the public on request. This MDNS is issued under 197-11-340(2); the lead agency will not act on this proposal for at least 14 days from the date below. Comments must be received by January 28`h, 2019 at 5:00 PM. Responsible Official: Mike Benzien 1211 S. 332°d Street Federal Way, WA 98003 Phone: (work) 253-945-5965 email: mbenzien@fwps.org r �9 Date Issued Signature Comment Period Information: Any person may appeal and submit comments regarding this determination. Comments will be considered on environmental issues and any environmental documents related to the proposed action. All written comments will become part of the record. Comments are due by 5:00 P.m. January 28', 2019, and must be sent to suggest Mike Benzien, who is available to answer questions regarding this project at the above address or by email: RECEIVED JAN 10 2019 CITY OF Fi=DFR,�L WAY CM9&NITY 0EVELOPN$FNT LEGAL NOTICE Notice of Decision Threshold Determination: SEPA Mitigated Determination of Non -Significance (MDNS) Lake Grove Elementary School Replacement Project, No. FWPScp18-LGR Project Proponent and SEPA Lead Agency: Federal Way Public Schools, Capital Projects, Operations & Maintenance Department Description of Proposal: The purpose of this project is to replace an existing elementary school for Federal Way Public Schools (FWPS) as part of a recent bond measure passed by voters in November 2017. Lake Grove Elementary School is located on the existing 9.43-acre site at 303 SW 3081h Street, Federal Way, Washington, 98023. The existing school was built in 1965 with various additions and modernizations over the years, with the last remodeling completed in 1985. The existing school occupies a significant portion of the buildable area on the lower portion of the site with playfields located on the elevated, upper portion of the site. The existing facility is comprised of a single -story building with classrooms arranged along a double -loaded corridor; four portable classrooms are also located onsite. The project will include the demolition of the existing facility and construction of a new 2-story elementary school campus to maximize site area and increase efficiency. Frontage improvements will be provided; including standard elements encompassing a driving lane, parking lane, planter strip and sidewalk. To fully comply with ADA requirements, ramps will be provided at the curbs for main driveway access points, as needed. Location: The site is located at 303 SW 308t' Street, Federal Way, Washington, 98023. The King County Tax Parcel Number is 072104-9180 and it is located in the NE quarter of Section 04, Township 21 N, Range 4 E. Public and Agency Comments: In making a final Threshold Determination, the Responsible Official reviewed the completed environmental checklist and other environmental information on file with FWPS and the City of Federal Way; relying on the information therein to exercise substantive authority under the Washington State Environmental Policy Act, pursuant to RCW 43.21C.060, and the Mitigated Determination of Non -Significance (MDNS) is issued under the Washington Administrative Code (WAC) 197-11-340(2). The Responsible Official has determined that the proposal does not have a probable significant adverse impact on the environment. However, in addition to contextual revisions (errata), and the inclusion of updated reports, the following mitigations have been identified as a result of further investigation and comments received from the general public and affected jurisdictions: Included in the revised SEPA Environmental Checklist is the project schedule and responses to concerns regarding accessibility, student transportation, recreation, security and emergency preparedness during construction.. Decommissioning and removal of unused underground storage tanks; including requisite soil testing/remediation and tank closure assessment protocols, conducted by qualified professionals engaged by the District. Completion of a final traffic impact analysis (TIA); including the following mitigations: o Installation of required roadway improvements, including pedestrian circulation and onsite improvements for the intersection of SW 3081h Street and the East Driveway; assuring sight distance meets code requirements. c The addition of sections evaluating Student Pick-Up/Drop-Off locations from a traffic and pedestrian safety perspective, a presentation of School Safe Walk Routes, and a Queuing Analysis to clarify the potential for traffic issues during arrival/dismissal times. o Trip generation data added for 2020 horizon year; projecting trip generation of 284 daily trips (98 AM Peak and 51 PM Peak) for the new facility and illustrating the effect of trips on level of service (LOS) intersection standards, based on volume/capacity ration for signalized and unsignalized intersections. o Public transit stop information updated RECEIVED JAN 10 2010 CITY OF FEDERAL WAY COMMUNITY DEVELOPMENT o Potential traffic impact fees identified, based on increased square footage Appeal Procedure: The issuance of a Threshold Determination is subject to review under the Washington State Environmental Policy Act (SEPA). If a petitioner wishes to appeal, the process and timing of the judicial appeal procedure detailed in Revised Code of Washington (RCW) 36.070C.040 shall be followed; immediately within the appeal period provided under statute; said appeal period shall commence on January 14, 2019 and conclude on January 28, 2019. Appeal proceedings for review under this chapter will require filing a land use petition in Superior Court. There is no separate administrative SEPA appeal for this type of land use decision. Responsible Official: Michael Benzien Title: Executive Director of Maintenance and Operations Mailing Address: Federal Way Public Schools, Educational Service Center, 33330 81h Avenue South, Federal Way WA 98003 Date of publication in the Federal Way Minor. Friday, January 11, 2019 Date of publication in the Seattle Daily Journal of Commerce, Monday, January 14, 2019 Federal Way Public Schools FEDERAL WAY Educational Service Center (ESC) PUBLIC SCHOOLS 33330 8th Avenue South Federal Way WA 98003 (253) 945-2000 STATE ENVIRONMENTAL POLICY ACT (SEPA) ENVIRONMENTAL CHECKLIST Purpose of Checklist Governmental agencies use this checklist to help determine whether the environmental impacts of your proposal are significant. This information is also helpful to determine if available avoidance, minimization or compensatory mitigation measures will address the probable significant impacts or if an environmental impact statement will be prepared to further analyze the proposal. Instructions for Applicants This environmental checklist asks you to describe some basic information about your proposal. Please answer each question accurately and carefully, to the best of your knowledge. You may need to consult with an agency specialist or private consultant for some questions. You may use "not applicable" or "does not apply" only when you can explain why it does not apply and not when the answer is unknown. You may also attach or incorporate by reference additional studies reports. Complete and accurate answers to these questions often avoid delays with the SEPA process as well as later in the decision -making process. The checklist questions apply to all parts of your proposal, even if you plan to do them over a period of time or on different parcels of land. Attach any additional information that will help describe your proposal or its environmental effects. The agency to which you submit this checklist may ask you to explain your answers or provide additional information reasonably related to determining if there may be significant adverse impact. Instructions for Lead Agencies Please adjust the format of this template as needed. Additional information may be necessary to evaluate the existing environment, all interrelated aspects of the proposal and an analysis of adverse impacts. The checklist is considered the first but not necessarily the only source of information needed to make an adequate threshold determination. Once a threshold determination is made, the lead agency is responsible for the completeness and accuracy of the checklist and other supporting documents. Use of Checklist for Non -Project Proposals For non -project proposals (such as ordinances, regulations, plans and programs), complete the applicable parts of sections A and B plus the SUPPLEMENTAL SHEET FOR NONPROJECT ACTIONS (part D). Please completely answer all questions that apply and note that the words "project," "applicant," and "property or site" should be read as "proposal," "proponent," and "affected geographic area," respectively. The lead agency may exclude (for non -projects) questions in Part B - Environmental Elements —that do not contribute meaningfully to the analysis of the proposal. Bulletin #050 — October 17, 2016 Page 1 of 32 REL,_ JAN 10 2019 CRY OF FEDERAL WAY COMMUNITY DEVELOPMENT kAHandouts\Environmental Checklist FEDERAL WAY PUBLIC SCHOOLS A. BACKGROUND 1. Name of proposed project, if applicable: Federal Way Public Schools Educational Service Center (ESC) 33330 90 Avenue South Federal Way WA 96003 (253) 945-2008 Federal Way Public Schools Lake Grove Elementary School Replacement, 303 SW 30F Street, Federal Way, Washington 98023 x S Wilh St j 5 M4'h P1 S X61h St 35 53c;'th st • S' p Lake Grove lmenrtof Eey School Q: 1 sw Sit. . III I D. 1 1, S? W SW 2-1- it recieral way Figure I Schco 91*10 190- TENW Project Sffe Wclnffy L46 Cauve Ekmanlcry schw Re-fiv comflicrt Figure I - Vicinity Map - Lake Grove Elementary School Bulletin #050 — October 17, 2016 Page 2 of 32 OHandouts\Environmental Checklist FEDERAL WAY PUBLIC SCHOOLS 2. Name of applicant: Federal Way Public Schools Educational Service Center (ESC) 33330 801 Avenue South Federal Way WA 98003 (253) 945-2000 Federal Way Public Schools (FWPS) Support Services Center,1211 South 332nd St, Federal Way, WA 98003 3. Address and phone number of applicant and contact person: Applicant: Mike Benzien, Executive Director, Maintenance and Operations Federal Way Public Schools Support Services Center 1211 S 332nd Street, Federal Way WA 98003 (206) 945-5930 (Office) 4. Date checklist prepared: September 25, 2018; revised January 7, 2019 5. Agency requesting checklist: Federal Way Public Schools (Lead Agency) City of Federal Way, Washington Contact Person: Robert McNeill, Senior Planner Barghausen Consulting Engineers, Inc. 18215 72nd Avenue S, Kent, WA 98032 (425) 251-6222 (Office) bmcneil bar hausen.com 6. Proposed timing or schedule (including phasing, if applicable): The complexity of this project dictates a tentative schedule be established which remains subject to change based on the length of entitlement permitting and plan review processes, weather conditions and/or contractor availability. Included in this document is the proposed project schedule and responses to concerns regarding accessibility, student transportation, recreation, security and emergency preparedness during construction. The current scheduled start date for vacating Lake Grove Elementary School is micillate June 2019, with contractor mobilization scheduled to begin shortly thereafter. Demolition activity is projected to begin in mid -July 2019, with a mid -August 2019 completion targeted - including abatement activity. Actual construction of the replacement school is projected to begin no later than late August 2019, with substantial completion scheduled for mid -October 2020 - including abatement activity. 7. Do you have any plans for future additions, expansion, or further activity related to or connected with this proposal? If yes, explain. The Applicant has no further plans for future additions, expansion or other similar activity relative to this development proposal aside from what is described in this proposal. 8. List any environmental information you know about that has been prepared, or will be prepared, directly related to this proposal. The Applicant has commissioned several reports addressing environmental issues: Geotechnical Engineering Report, Associated Earth Sciences, Inc. (AESI) 6/18. letin #050 — October 17, 2016 Page 3 of 32 k:\Handouts\Environmental Checklist Federal Way Public Schools Educational Service Center (ESC) FEDERAL WAY 33330 P Avenue South PUBLIC SCHOOLS Federal way WA 9003 (253)943-2000 • Subsurface Investigation Report, PBS Engineering and Environmental, Inc., (PBS) 9124 4 Acoustical Analysis, Stantec, 9118 • Traffic Impact Analysis, Transportation Engineering North West (TENW)11/18 • Arborist Report; pending, for submittal during permitting/plan review • Site Lighting/Photometric Analysis; pending, for submittal during permitting/plan review The Applicant is fully committed to developing mitigation measures on any environmental concerns identified by these studies. Figure 2 - Aerial View - Existing Lake Grove Elementary School 9. Do you know whether applications are pending for governmental approvals of other proposals directly affecting the property covered by your proposal? If yes, explain. The City of Federal Way will be conducting a Process III, Use Approval review process in accordance with review criteria established in the Federal Way Revised Code (FWRC), Section 19.65.100J2). SEPA review is typically processed concurrently with Process III applications. As Lead Agency, FWPS will process this SEPA checklist in advance of permitting with the City of Federal Way. The Lakehaven Water and Sewer District will review the Lake Grove construction plans as they relate to water and sewer availability, system capacity and infrastructure improvements necessary to adequately serve the new facility. The South King Fire and Rescue District will review plans to assure adequate fire flow and hydrant facilities are available, as well as the installation of sprinkler and alarm systems and assuring adequate fire access is maintained for emergency vehicles. Both of these Bulletin #050 — October 17, 2016 Page 4 of 32 kAHandoutsTnvironmental Checklist Federal Way Public Schools Educational Service Center (ESCI FEDERAL WAY 33330 901 Avenue South PUBLIC SCHOOLS Federal Way WA 96003 (253)945-20002000 agencies' approval processes will occur concurrently with the City of Federal Way plan review and construction permitting processes. The Puget Sound Clean Air Agency (PSCAA) will require a Notice of Demolition be submitted along with the results of a professional asbestos survey of the existing facility (and proposed mitigation — if necessary). PSCAA will also require a Notice of Construction be filed. South King Fire and Rescue District (SKFRD) will conduct a thorough review of project plans; including, but not limited to, fire prevention measures, the installation of fire alarm and suppression equipment, the location and capacity of both water lines and hydrants (fire flow), and overall site plan design as related to the designation of fire lanes and emergency vehicle access. 10. List any government approvals or permits that will be needed for your proposal, if known. The list below is a preliminary assessment of permitting likely to be required for this project, pending further review. • Process Ili I Project Approval • Concurrency • Right -of -Way Modification Waiver (if necessary) • Master Land Use Application • NPDES General Permit (DOE) • Demolition Permits (PSCAA) • Demolition Permits (City) • Building and Construction Permits (Federal Way) • Retaining Wall Perm0s (if required) • MEP - Mechanical, Electrical and Plumbing Permits • Sign Permits (if required) • Stormwater Covenants ■ Water I Sewer Permits and Developer Extension Agreement (Lakehaven) The following codes will be enforced under the FWRC for this project: • International Building Code (IBC), 2015, as amended by Washington State Amendments WAC 51.50 ■ International Mechanical Code (IMC), 2015, as amended by Washington State Amendments WAC 51-52 • Uniform Plumbing Code (UPC), 2015, as amended by Washington State Amendments WAC 51-56 & WAC 51-57 • International Fire Code (IFC), 2015, as amended by Washington State Amendments WAC 51 -54 ■ International Residential Code, 2015, as amended by Washington State Amendments WAC 51-51 • National Electric Code (NEC), 2017 • Accessibility Code (ICC/ANSI Al17.1), 2009 • Washington State Energy Code, 2015 WAC 51-11 Bulletin #050 — October 17, 2016 Page 5 of 32 k:\Handouts\Environmental Checklist Federal Way Public Schools Educational Service Center (ESC) FEDERAL WAY 33330 81" Avenue South PUBLIC SCHOOLS Federal Way WA 003 (253) 945-2-200t1 11. Give brief, complete description of your proposal, including the proposed uses and the size of the project and site. There are several questions later in this checklist that ask you to describe certain aspects of your proposal. You do not need to repeat those answers on this page. (Lead agencies may modify this form to include additional specific information on project description.) Lake Grove Elementary School is located on the existing 9.43-acre site at 303 SW 308th Street in Federal Way, Washington. The site is comprised of two relatively flat areas bisected by a significant wooded slope. The large lower area is occupied by the existing school building, and the smaller upper area is occupied by grass playfields, which are approximately 30-feet higher in elevation than the school building The site is served by SW 308th Street, running east -west along the north edge of the property. The school is mostly surrounded by single family residential development. A professional office zone (PC) and multifamily zone (RM-1880) are located immediately to the east of the site. A heavily wooded area abuts the site to the south and west. Mirror Lake is roughly two blocks away to the southwest. The school property is zoned residential single family (RS-7.2), with schools being a permitted use. The existing school building, portable structures and associated parking areas sit within the northern portion of the overall school property while playfields occupy the entire southern portion of the site. Vehicular access to and from the site is currently via two driveways off of Southwest 308th Street, which is located directly north of the school property. Circulation through the site is via a one-way drive aisle, which provides access to existing parking areas. The westernmost vehicular access point provides ingress to the site and the easternmost driveway serves as the egress point from the site. Figure 3 - Proposed Site Plan - New Lake Grove Elementary School The existing Lake Grove Elementary School currently serves approximately 450 scholars from pre- kindergarten through 5th grade. The existing school was originally constructed in 1965 with various additions and modernizations over the years with the last remodel project occurring in 1985. The existing facility is comprised of a single -story building with classrooms arranged along a double Bulletin #050 — October 17, 2016 Page 6 of 32 k:\Handouts\Environmental Checklist Federal Way Public Schools Educational Service Center (ESC) FEDERAL WAY 33330 8" Avenue South PUBLIC SCHOOLS Federal Way WA 00 (253)945-2-2000 loaded corridor (47,654 SF), along with four portable classroom buildings (3,584 SF). The existing building occupies a significant portion of the buildable area on the lower portion of the site. Given the limited site access and available area to build a new school while the existing school is occupied, FWPS decided the school will be housed off site during construction. At this time, a specific location has not yet been determined. 12. Location of the proposal. Give sufficient information for a person to understand the precise location of your proposed project, including a street address, if any, and section, township, and range, if known. If a proposal would occur over a range of area, provide the range or boundaries of the site(s). Provide a legal description, site plan, vicinity map, and topographic map, if reasonably available. While you should submit any plans required by the agency, you are not required to duplicate maps or detailed plans submitted with any permit applications related to this checklist. The project site is located at 303 SW 3081h Street in Federal Way, Washington, and is illustrated on the included vicinity map. An abbreviated legal description, parcel number and lot size are provided: APN: 072104-9180 Legal: NE'/4, Section 04, Township 21 N, Range 04 E Lot: 9.43 Acres The project will include the demolition of the existing school facilities and the construction of a new 60,322 SF elementary school campus onsite serving 600 scholars; it is anticipated the final site plan will include the construction of new playfields, paved parking and access drives, landscaping, pedestrian pathways, exterior fighting and other typical improvements outlined in preliminary plans submitted in support of this application. Figure 4 - Demolition Logistics - Lake Grove Elementary School Bulletin #050 — October 17, 2016 Page 7 of 32 kAHandoutsTrivironmental Checklist FEDERAL WAY PUBLIC SCHOOLS F-- Jcb',11" 31,-111-10-1 P Fun.ro B�Inng F„I1 e Fcres _�_ Federal Way Public Schools Educational Service Center (ESC) 33330 8" Avenue South Federal Way WA 95003 (253)945-200C Lake Grove Elementary Logistics Plan Construction Phase Figure 5 - Construction Logistics - Lake Grove Elementary School B. ENVIRONMENTAL ELEMENTS 1. Earth a. General description of the site: [ ] Flat [ ] Rolling [ ] Hilly [ ] Steep Slopes [ ] Mountainous [ X ] Other See (b) below for clarification. b. What is the steepest slope on the site (approximate percent slope)? Topographically, the overall site generally slopes from northeast to southwest from a high elevation point of approximately 395 feet in the northeast comer of the site. However, within the specific vicinity of the existing school building the topography is relatively flat with minimal, if any, grade difference. Additionally, a vegetated ridge line, which represents the most steeply Bulletin #050 — October 17, 2016 Page 8 of 32 k:\Handouts\Environmental Checklist FEDERAL WAY PUBLIC SCHOOLS Federal Way Public Schools Educational Service Center (ESC) 33330 801 Avenue South Federal Way WA 98003 (253)945-2000 sloped area on the site, separates the school building and associated parking and play areas from the higher elevation playfields to the east. Parking areas are located in the front of the building and on the east side of the site. A west - facing slope ranging in height from 20-feet to 30-feet separates the lower school building, adjacent driveways and play areas from the upper baseball fields. The slope is naturally vegetated with mature evergreen trees, deciduous trees, shrubs and grass areas; likely originated during original grading and leveling of the building pad and field areas. Pending further plan review, the new structures will be built close to existing grades, where possible, without the need for deep excavations and/or thick structural fill. c. What general types of soils are found on the site (for example, clay, sand, gravel, peat, muck)? If you know the classification of agricultural soils, specify them and note any agricultural land of long-term commercial significance and whether the proposal results in removing any of these soils. According to soil data obtained from the USDA Web Soil Survey, soils on the majority of the site consist primarily of Arents, Alderwood material 6 to 15 percent slopes (AmC). To a lesser extent, site soils also consist of Alderwood gravelly sandy loam, 15 to 30 percent slopes (AgD), which is predominantly concentrated in a limited area within the site's eastern extremities. Furthermore, based on preliminary findings deduced from geotechnical explorations conducted on the site, subsurface soils are comprised of fill soils underlain by Vashon lodgement till. These identifiable soil types are typically considered poor infiltration receptors. Please refer to our submittal package and the copy of, "Subsurface Exploration, Geologic Hazard and Preliminary Geofechnical Engineering Report," prepared by Associated Earth Sciences, Kirkland, Washington, dated June 2018, for a detailed discussion of these issues. Bulletin #050 — October 17, 2016 Page 9 of 32 k:\Handouts\Environmental Checklist FEDERAL WAY PUBLIC SCHOOLS 7 40 Federal Way Public Schools Educational Service Center (ESQ 33330 Sm Avenue South Federal Way WA 98003 (253)945-2000 Figure 6 - Perspective Rendering (NW Corner) - Proposed take Grove Elementary School d. Are there surface indications or history of unstable soils in the immediate vicinity? If so, describe. To the best of the Applicant's knowledge, there are no surface indications of unstable soils and/or a history of soil instability manifesting itself, either onsite or in the immediate vicinity. Current plans call for construction of the new facility in the same general location as the existing building; effectively distancing itself from the designated EHA area. Required buffer reductions will be addressed during review of final construction plans, if needed. e. Describe the purpose, type, total area, and approximate quantities and total affected area of any filling, excavation, and grading proposed. Indicate source of fill. Preliminary civil engineering plans project grading activity may result in extensive quantities (CY / cubic yards) of cut and fill; current estimates indicate 1,841 CY cut and 18,592 CY of fill. All existing fill beneath proposed foundations may need to be removed and replaced with structural fill (16,751 CY) or controlled density fill; extending laterally by a distance equal to the depth of overexcavation. Precise amounts of cubic yards cut and the amount and source of fill will be determined later; the Applicant is committed to using approved sources of clean fill materials. f. Could erosion occur as a result of clearing, construction, or use? If so, generally describe Temporary erosion is a possibility associated with construction activity. The Applicant's finalized permit plans will include a temporary erosion and sedimentary control (TESC) plan; implemented using the best management practices (BMPs) associated with erosion prevention and control. Bulletin #050 — October 17, 2016 Page 10 of 32 k:\Handouts\Environmental Checklist FEDERAL WAY PUBLIC SCHOOLS Federal Way Public Schools Educational Service Center (ESC) 33330 P Avenue South Federal Way WA 98003 (253)945-2000 The TESC system will be designed in accordance with the City of Federal Way erosion control requirements, in addition to, the 2016 KCSWDM and the Department of Ecology Construction Stormwater Pollution Prevention Plan (SWPPP). TESC facilities will include at a minimum: stabilized construction entrance, silt fencing, catch basin inserts, interceptor swales, sediment ponds or tanks, and other miscellaneous sediment control facilities. The existing pavement will likely be used for stabilized construction access and staging until such time as it needs to be removed for construction of the proposed improvements. Temporary sediment settling tanks will be used for sediment control. The construction documents will include the requirements for the contractor to manage the construction site in accordance with l3MPs. This will include marking the clearing limits; limiting the site area that is exposed and stabilizing exposed areas with mulch or other approved measures; protecting slopes and managing any water from construction dewatering. g. About what percent of the site will be covered with impervious surfaces after project construction (for example, asphalt or buildings)? Based on the preliminary civil engineering plans prepared for this submittal, approximately twelve percent (12.1%) will be building coverage by the new Lake Grove Elementary School, with a total of thirty-four percent (34%) of the site covered by impervious surfaces (asphalt paving, driveways, sidewalks, walkways, etc.). With maximum lot coverage for structures established at seventy-five percent (75%) under the FWRC, this project falls well below the maximum threshold. However, these are preliminary estimates and subject to change as a result of permitting/plan review. h. Proposed measures to reduce or control erosion, or other impacts to the earth, if an Specific measures to reducelcontrol erosion will be detailed on the TESC plan referred to in (f) above; these measures will likely focus on erosion potential associated with construction activity. Once the project is completed, the chances of significant erosion are virtually nil. 2. Air a. What types of emissions to the air would result from the proposal during construction, operation, and maintenance when the project is completed? If any, generally describe and give approximate quantities if known. To the best of the Applicant's knowledge, the project will not produce any significant impacts andlor result in emissions of particulates or noxious odors either during construction or future operations. During construction minimal impacts may be realized as particulates (dust, dirt, etc.) are released into the air on a limited basis. A reliable estimate of quantities cannot be formulated at this time. b. Are there any off -site sources of emissions or odor that may affect your proposal? If so, generally describe. None; Not Applicable. The only potential source lies in the emissions from vehicular traffic using the adjacent rights -of -way. c. Proposed measures to reduce or control emissions or other impacts to air, if any: Bulletin #050 — October 17, 2016 Page 11 of 32 k:\Handouts\Environmental Checklist y FEDERAL WAY PUBLIC SCHOOLS N Federal Way Public Schools Educational Service Center (ESC) 33330 SIR Avenue South Federal Way WA 98003 (253),945-2000 Controlled watering of the ground will reduce particulates emitted during construction; the use of mufflers and spark arresters will help minimize vehicle emissions from construction equipment. 3. Water a. Surface Water 1) Is there any surface water body on or in the immediate vicinity of the site (including year- round and seasonal streams, saltwater, lakes, ponds, wetlands)? If yes, describe type and provide names. If appropriate, state what stream or river it flows into. The closest surface body of water is Steel Lake; located within % mile of the school, south of South 304th Street. Lake Dolloff is located about % mile southwest of the school, on the east side of Interstate 5. The site is located within the Hylebos Creek drainage basin, which ultimately discharges to the Puget Sound. 2) Will the project require any work over, in, or adjacent to (within 200 feet) the described waters? If yes, please describe and attach available plans. No; Not Applicable. 3) Estimate the amount of fill and dredge material that would be placed in or removed from surface water or wetlands and indicate the area of the site that would be affected. Indicate the source of fill material. Under the Applicant's proposal, no filling or dredging of designated wetlands is associated with this project. 4) Will the proposal require surface water withdrawals or diversions? Give general description, purpose, and approximate quantities if known. None; Not Applicable. Under the Applicant's proposal, no surface water withdrawals andfor diversions are associated with this project; surface runoff will be controlled onsite. 5) Does the proposal lie within a 100-year flood plain? If so, note location on the site plan. The site is located in Zone X; an area with minimal flood hazard. 6) Does the proposal involve any discharges of waste materials to surface waters? If so, describe the type of waste and anticipated volume of discharge. None; Not Applicable. Under the Applicant's proposal, no discharge of waste materials to surface waters is associated with this proposal. b. Ground Water 1) Will groundwater be withdrawn from a well for drinking water or other purposes? If so, give a general description of the well, proposed uses and approximate quantities withdrawn from the well. Will water be discharged to groundwater? Give general description, purpose, and approximate quantities if known. Bulletin #050 — October 17, 2016 Page 12 of 32 kAHandouts\Environmental Checklist �y. FEDERAL WAY ■ PUBLIC SCHOOLS t� Federal Way Public Schools Educational Service Center (ESC1 33330 80 Avenue South Federal Way WA 98003 (253)945-2000 Under the Applicant's proposal, no groundwater will be withdrawn, nor is any discharge to groundwater resulting from this project. Excavation related to construction may reveal the existence of perched groundwater deposits in the substrate; requiring removal through a dewatering process (often requiring a separate permit). 2) Describe waste material that will be discharged into the ground from septic tanks or other sources, if any (for example: domestic sewage; industrial, containing the following chemicals; agricultural; etc.). Describe the general size of the system, the number of such systems, the number of houses to be served (if applicable), or the number of animals or humans the system(s) are expected to serve. Under the Applicant's proposal, no discharge of waste materials to ground waters is associated with this construction project. c. Water Runoff (including stormwater) 1) Describe the source of runoff (including stormwater) and method of collection and disposal, if any (include quantities, if known). Where will this water flow? Will this water flow into other waters? If so, describe The site is located within the Lower Puget Sound drainage basin, which ultimately discharges to the Puget Sound. Paved impervious surfaces are the only potential source of stormwater runoff; runoff will be collected through the onsite stormwater system and conveyed to the designated point of discharge. Stormwater runoff in the existing condition is collected in catch basins on site and conveyed to a catch basin in the southwest comer of the project site. From there, stormwater flows south and then west to ultimately discharge into Puget Sound. The proposed stormwater strategy and design will not after the existing downstream drainage patterns or path from the site. Please refer to the civil engineering plans included with this submittal for more detailed information on collection, conveyance and discharge. The site is located within the five- and 10•yearwellhead capture zone, which is designated as a critical aquifer recharge area under the provisions of the Growth Management Act (Chapter 36.70A RCW). Per FWRC 19,145,490, FWPS will be required to submit a hazardous materials inventory with building and construction permitting. In addition, with a proposed landscaped area in excess of 10,000 square feet, FWPS will need to prepare an operations and maintenance manual using best management practices (BMPs), per FWRC 19.145.510. The site is also within the Tacoma Smelter Plume detect area and FWPS is required to obtain soil analysis conducted by an independent consultant to detect and quantify the presence of historic arsenic and/or lead contamination. 2) Could waste materials enter ground or surface waters? If so, generally describe. Under the Applicant's proposal, the project has been designed to eliminate and/or limit any potential for groundwater contamination. While excessive amounts are highly unlikely, there is a possibility for surface runoff conveying unspent hydrocarbons and/or other surface contaminants from paved surfaces onsite into groundwater. 3) Does the proposal alter or otherwise affect drainage patterns in the vicinity of the site? If so, generally describe. Bulletin #050 — October 17, 2016 Page 13 of 32 k:\Handouts\Environmental Checklist �y FEDERAL WAY PUBLIC SCHOOLS N Federal Way Public Schools Educational Service Center (ESCI 33330 80 Avenue South Federal Way WA 98003 (253) 945-2000 To the best of the Applicant's knowledge, drainage patterns for other properties in the vicinity will not be affected by this proposal. The Applicant's preliminary drainage plan demonstrates specific improvements designed to monitor drainage patterns and control runoff. Proposed measures to reduce or control surface, ground and runoff water, and drainage impacts, if any. The stormwater design will be developed in compliance with the 2016 King County Stormwater Design Manual (KCSWDM) as adopted by the City of Federal Way, as well as the City's Addendum to the 2016 KCSWDM dated January 8, 2017. The site is located within the Lower Puget Sound drainage basin, which ultimately discharges to the Puget Sound. Stormwater runoff in the existing condition is collected in catch basins on site and conveyed to a catch basin in the southwest corner of the project site. From there, stormwater flows south and then west to ultimately discharge into Puget Sound. In the developed condition, this downstream course will not be altered. Since the existing impervious surface coverage for the site is 35.75%, the project meets the 35% threshold requirement to classify as a "redevelopment." Additionally, water quality treatment is required for all pollution generating impervious surfaces, and the project must also comply with jurisdictional flow control requirements. Soil conditions in the site area are not conducive to infiltration, eliminating options to use bioretention facilities or permeable pavement to mitigate stormwater runoff from the site. Since on -site infiltration is infeasible, the stormwater management strategy for water quality treatment and flow control will encompass the use of large sand filter systems and detention facilities. The site resides within a City designated Enhanced Basic Water Quality Treatment area. In order to meet this level of required treatment, sand filter facilities are proposed for various areas of the site to treat runoff from target pollution generating impervious surfaces such as the parking lots, drive aisles, service areas, and synthetic turf play -field. The site is also located within a designated Flood Problem Flow Control Area. To address this level of required flow control, a detention facility (26,000 CF) is currently proposed to be located under the westernmost parking lot area. A second detention vault (18,000 CF) is proposed under the open lawn area located adjacent to the south of the school facility. Stormwater mitigation strategies for detention in the playfields (sand filters) include utilizing the sub -grade beneath the fields as detention, with a connection to a flow control structure. The estimated detention volume for this system is 17,000 CF. FWPS will be reviewing options for stormwater water quality and flow control as part of the permitting/plan review process. Please refer to the preliminary drainage plan prepared as part of the design package as a means of identifying the Applicant's proposal to address/control surface water runoff. Bulletin #050 — October 17, 2016 Page 14 of 32 k:\Handouts\Environmental Checklist y FEDERAL WAY ■ PUBLIC SCHOOLS N 4. Plants a. Check the types of vegetation found on the site: Federal Way Public Schools Educational Service Center (ESC) 33330 81n Avenue South Federal Way WA 90003 (253)945-2000 [ X ] Deciduous tr al a en, other [ X ] Evergreen tre fir, cedar, pine ❑ther [ X ] Shrubs I X ] Grass [ ] Pasture [ ] Crop or grain ( ] Orchards, vineyards or other permanent crops. [ ] Wet soil plants: cattail, buttercup, bulrush, skunk cabbage, other [ ] Water plants: water lily, eelgrass, milfoil, other [ ] Other types of vegetation b. What kind and amount of vegetation will be removed or altered? A west -facing slope ranging in height from 20-feet to 30-feet separates the lower portion of the site (school building) from the upper portion (playfields). The slope is naturally vegetated with mature evergreen trees, deciduous trees, shrubs and grass areas; likely originated during original grading and leveling of the building pad and field areas. Pending further plan review, the new structures will be built close to existing grades, where possible, without the need for deep excavations andlor thick structural fill. Under the Applicant's proposal, and givers the nature of the project, a number of trees and shrubs may be removed to accommodate the project design. Specific details on species, size and location of trees and shrubbery slated for removal will be detailed on preliminary demolition and landscape plans -to be finalized at a later date. Where passible, existing trees and shrubs maybe incorporated into the proposed plan. 7 x_ ,fir a ■ ° L ■ J �m ,•u i 4 t • R Y ■ Figure 7 - Proposed Landscaping Plan - Lake Grove Elementary School Bulletin #050 — October 17, 2016 Page 15 of 32 01-landouts\Environmental Checklist Federal Way Public Schools Educational Service Center (ESC) FEDERAL WAY 33330 801 Avenue South 4 PUBLIC SCHOOLS Federal Way WA 003 (253) s45-2-zaoo c. List threatened and endangered species known to be on or near the site To the best of the Applicant's knowledge, there are no known threatened or endangered species onsite or in the immediate vicinity. d. Proposed landscaping, use of native plants, or other measures to preserve or enhance vegetation on the site, if any: The Applicant's plans for landscaping onsite will feature trees and shrubs native to the Pacific Northwest - including a mixture of deciduous and coniferous trees and drought -tolerant plants where appropriate. Please refer to the preliminary landscape plans for a schedule of proposed plantings. e. List all noxious weeds and invasive species known to be on or near the site. To the best of the Applicant's knowledge, there are no noxious weeds andlor invasive species on or near the site. 5. Animals a. List any birds and other animals which have been observed on or near the site or are known to be on or near the site. Examples include: [ X K iE)als- awks, eagles, heron, other: [ ] Deer, bear, elk, beaver, other: [ ] Fish: Bass, salmon, trout, herring, shellfish, other: b. List any threatened and endangered species known to be on or near the site. To the best of the Applicant's knowledge, there are no threatened or endangered species known to be on or near the site on a regular basis. c. Is the site part of a migration route? If so, explain. The project site is located within the Pacific Flyway; well -documented as a migratory route for numerous species of birds and waterfowl. d. Proposed measures to preserve or enhance wildlife, if any: None; Not Applicable. e. List any invasive animal species known to be on or near the site. To the best of the Applicant's knowledge, there are no invasive animal species known to be on or near the project site. Bulletin #050 — October 17, 2016 Page 16 of 32 kAHandouts%Environmental Checklist FEDERAL WAY PUBLIC SCHOOLS N 6. Energy and Natural Resources Federal Way Public Schools Educational Service Center (ESC) 33330 81' Avenue South Federal Way WA 96003 (253)945-2000 a. What kinds of energy (electric, natural gas, oil, wood stove, solar, wind) will be used to meet the completed project's energy needs? Describe whether it will be used for heating, cooling, manufacturing, storage, etc. Under the Applicant's proposal, either or both electric and/or gas energy will serve to meet the project's anticipated needs. b. Would the project affect potential use of solar energy by adjacent properties? If so, generally describe the degree of impact. To the best of the Applicant's knowledge, this project would not interfere with the potential use of solar energy by adjacent properties. c. What kinds of energy conservation features are included in the plans for this project? List other proposed measures to reduce or control energy impacts, if any: To the best of the Applicant's knowledge, energy conservation features will be incorporated into the project's design and will be detailed during the permitting phase of the project— including the submittal of required energy worksheets. 7. Environmental Health a. Are there any environmental health hazards, including exposure to toxic chemicals, risk of fire and explosion, spill, or hazardous waste that could occur as a result of this proposal? If so, describe. To the best of the Applicant's Knowledge, no projected environmental health hazards are or will be associated with this proposal. The risk of fire is not expected to exceed that associated with other similar educational facilities; in fact current design standards will almost certainly provide a major upgrade over existing levels of protection in terms of fire prevention. 1) Describe any known or possible contamination at the site from present or past uses. To the best of the Applicant's knowledge, there is no known contamination onsite, nor is there any reason to anticipate contamination exists from present and/or past educational uses. While performing due diligence on this project, an underground storage tank (UST) was discovered onsite, approximately 2% feet below ground surface (BGS), with a base located about 101/2 feet BGS. Approximately 8 feet in diameter and 23 feet long; given the proximity to the boiler room, indications are the tank was used for fuel oil storage. Studies conducted on soil samples revealed no petroleum impacted soils in any areas surrounding the UST, to a depth of 20 feet BGS. The UST will be removed as part of the project and in accordance with best management practices for UST removal, FWPS will perform a tank closure assessment when the UST is decommissioned and removed. Please refer to the subsurface investigation report included with this submittal for further details. The Applicant remains fully committed to complete cleanup/remediation of the soils onsite as part of the Lake Grove demolition and UST closure processes. Bulletin #050 — October 17, 2016 Page 17 of 32 kAHandouts\Environmental y FEDERAL WAY ■ PUBLIC SCHOOLS Federal Way Public Schools Educational Service Center (ESCI 33330 80 Avenue South Federal Way WA 90003 (253) 945-2000 The site is located within the Tacoma Smelter Plume detect area and FWPS is required to obtain soil analysis to detect the presence of historic arsenic and/or lead contamination; FWPS has commissioned the appropriate analysis which will be included with this submittal. The site is also located within the five- and 10-year wellhead capture zone; designated as a critical aquifer recharge area under the provisions of the Growth Management Act (Chapter 36.70A RCW). Per FWRC 19.45.490, FWPS will be required to submit a hazardous materials inventory with building and construction permitting. In addition, with a proposed landscaped area in excess of 10,000 square feet, FWPS will need to prepare an operations and maintenance manual using best management practices (BMPs), per FWRC 19.145.510. The presence of asbestos within existing structures will be evaluated with an asbestos survey conducted by qualified professionals; required mitigation will be provided in terms of removal from the site. Evidence of the study and findings will be provided to Federal Way as part of the demolition permit process and the required Notice of Demolition will be filed with PSCAA, demonstrating compliance with their requirements as well. 2) Describe existing hazardous chemicals/conditions that might affect project development and design. This includes underground hazardous liquid and gas transmission pipelines located within the project area and in the vicinity. To the best of the Applicant's knowledge, there are no hazardous chemicals or conditions - including transmission pipelines • present onsite or in the immediate vicinity which could affect project development and/or design. 3) Describe any toxic or hazardous chemicals that might be stored, used, or produced during the projects development or construction, or at any time during the operating life of the project. Under the Applicant's proposal, aside from materials used during the educational process, no toxic or hazardous chemicals will be routinely stored, used and/or produced during the project's construction and/or during routine operations as an educational facility. With the site located within the five- and 10-year wellhead capture zone; designated as a critical aquifer recharge area under the provisions of the Growth Management Act (Chapter 36.70A RCW), per FWRC 19.145.490, FWPS will be required to submit a hazardous materials inventory with building and construction permitting. 4) Describe special emergency services that might be required. To the best of the Applicant's knowledge, special emergency services will not be required by this project on a regular basis; either during construction or as a matter of routine operation. 5) Proposed measures to reduce or control environmental health hazards, if any: With no environmental health hazards and/or projected impacts identified at this stage of the development process, excluding possible asbestos mitigation, and pending evidence to the contrary, no mitigation measures are required or proposed. Bulletin #050 — October 17, 2016 Page 18 of 32 kAHandouts\Environmental Checklist .�y FEDERAL WAY ■ PUBLIC SCHOOLS P b. Noise Federal Way Public Schools Educational Service Center (ESC) 33330 801 Avenue South Federal Way WA 98003 (253)945-2000 1) What types of noise exist in the area which may affect your project (for example: traffic, equipment, operation, other)? Minimal noise impacts may originate from school -related traffic on the adjacent public andlor private rights -of -way; the Applicant does not anticipate any adverse impacts affecting the project. Traffic on public rights -of -way are exempt from FWRC noise regulations. The north facade of the school will be located further from SW 308t' Street traffic under the current plan; resulting in less traffic noise for scholars and staff. Various occupant -related noises — such as playground noise, building operations noise and safety equipment noise — will remain a factor for neighboring properties, but the Applicant expects volumes andfor frequency to replicate historical patterns. Playground noise between 9:00 AM and 10:30 PM is exempt from FWRC noise regulations (FWRC 7.10.020). 2) What types and levels of noise would be created by or associated with the project on a short-term or a long-term basis (for example: traffic, construction, operation, other)? Indicate what hours noise would come from the site. Short-term increases in noise levels will result from normal construction activity. The Applicant projects decibel levels associated with this activity will range between 57.89 DBA and be limited to those hours where construction activity is permitted under Federal Way code. Construction noise is typically mitigated through the use of noise attenuation devices installed on heavy equipment. On a long-term, regular basis, the only exception to typical right-of-way traffic noise will be related to any concentration of school bus traffic associated with the educational use. 3) Proposed measures to reduce or control noise impacts, if any: With no exceptional long-term impacts identified at this stage of the development process, and pending evidence to the contrary, no mitigation measures are required or proposed. Significant changes are not expected from the new campus beyond what is currentiy experienced. 8. Land and Shoreline Use a. What is the current use of the site and adjacent properties? Will the proposal affect current land uses on nearby or adjacent properties? If so, describe. The current use of the site as an educational facility over a number of years has ingratiated the use into the character of the adjacent residential neighborhood. After the construction activity is completed, the new facility will continue and embellish upon the traditional role of a neighborhood school and continue the District's participation in the growth of Federal Way as a community. b. Has the project site been used as working farmlands or working forest lands? If so, describe. How much agricultural or forest land of long-term commercial significance will be converted to Bulletin #050 — October 17, 2016 Page 19 of 32 k:\Handouts\Environmental Checklist FEDERAL WAY PUBLIC SCHOOLS Federal Way Public Schools Educational Service Center (ESC) 33330 80 Avenue South Federal Way WA 98003 (253) 945-2000 other uses as a result of the proposal, if any? If resource lands have not been designated, how many acres in farmland or forest land tax status will be converted to nonfarm or non -forest use? The site has not been used as either working farmland or forest lands in recent memory. As such, given the intent to maintain an educational use, the Applicant's proposal will obviously not remove any agricultural or forest land of commercial significance from Federal Way's inventory of land resources. 1) Will the proposal affect or be affected by surrounding working farm or forest land normal business operations, such as oversize equipment access, the application of pesticides, tilling, and harvesting? If so, how: None; Not Applicable. c. Describe any structures on the site. The site is currently occupied by an educational facility of approximately 51,238 5F including related accessory structures and site improvements. The existing conditions plan provided with this submittal will indicate specific locations of structures, facilities and site improvements. d. Will any structures be demolished? If so, what? Under the Applicant's proposal, all structures currently existing onsite will bedemolished; please refer to the attached demolition logistics plan for additional information. e. What is the current zoning classification of the site? The site is currently zoned as RS 7.2 under the provisions of Federal Way's Zoning Code; additional information on applicable bulk regulations is provided in the table below. LAKE GROVE CLASSIFICATION I REQUIRED I PROPOSED SETBACKS 17T FRONT (NORTH) 50' 50' 177' SIDE (EAST) SIDE (WEST) 50' 50' REAR (SOUTH) 50' 86, MAX BUILDING HEIGHT: 55' FOR GYMS 35'-0" VERTICAL DISTANCE FROM AVERAGE BUILDING ELEVATION TO MID POINT 30' FOR ALL OTHER 33'-0" BETWEEN EAVE & RIDGE OF HIGHEST STRUCTURES PRINCIPAL SLOPED ROOF MAX LOT COVERAGE BY STRUCTURES REQUIRED PARKING 1 PER EMPLOYEE Bulletin #050 — October 17, 2016 Page 20 of 32 75% MAX 1 37% (FWRC 19.200.090) EXISTING PROPOSED 60 k:\Handouts\Environmental Checklist Federal Way Public Schools Educational Service Center (ESC) k-t FEDERAL WAY 33330 80 Avenue South PUBLIC SCHOOLS Federal Way WA 00 (253)945-2-2U00 f. What is the current comprehensive plan designation of the site? The site is designated for Single -Family 1 High Density land use under the provisions of the Federal Way Comprehensive Plan. g. If applicable, what is the current shoreline master program designation of the site? None; Not Applicable. h. Has any part of the site been classified as a critical area by the city or county? If so, specify. With the site located within the five- and 10-year wellhead capture zone; designated as a critical aquifer recharge area under the provisions of the Growth Management Act (Chapter 36.70A RCW), per FWRC 19.145.490, FWPS will be required to submit a hazardous materials inventory with building and construction permitting. Pending further plan review, slopes located onsite may pose a geological hazard and potentially be eligible for designation as Erosion Hazard Areas (EHA); primarily located along the east, south and west perimeters, areas associated with the mature tree buffer. i. Approximately how many people would reside or work in the completed project? There is no residential component associated with this project; when completed, the project is estimated to employ under 100 employees as either administrative staff, teachers and/or related professionals. j. Approximately how many people would the completed project displace? Lacking any residential component, there is no displacement associated with the Applicant's proposal; as part of project design, the District is formulating temporary facilities for the student population. k. Proposed measures to avoid or reduce displacement impacts, if any: The Applicant is the current owner of the subject property. With no residential component, and thus no displacement, no mitigation is required. I. Proposed measures to ensure the proposal is compatible with existing and projected land uses and plans, if any: The very nature of the Applicant's proposal — demolishing an antiquated educational facility in order to construct a new, modern replacement facility on the same site in approximately the same location — is conducive to ensure compatibility with existing and projected land uses under any comprehensive or neighborhood plan. m. Proposed measures to reduce or control impacts to agricultural and forest lands of long-term commercial significance, if any: None; Not Applicable. 9. Housing Bulletin #050 — October 17, 2016 Page 21 of 32 <AHandoutMEnvironmental Checklist Federal Way Public Schoofs Educational Service Center (ESC) FEDERAL WAY 33330 80' Avenue South PUBLIC SCHOOLS Federal Way WA 00 (253)945-2000 a. Approximately how many units would be provided, if any? Indicate whether high, middle, or low-income housing. None; Not Applicable. Under the Applicant's proposal, there is no residential component. b. Approximately how many units, if any, would be eliminated? Indicate whether high-, middle-, or low-income housing. None; Not Applicable. Under the Applicant's proposal, there is no residential component. c. Proposed measures to reduce or control housing impacts, if any: With no impacts identified at this stage of the development process, and pending evidence to the contrary, no mitigation measures are required or proposed. 10. Aesthetics a. What is the tallest height of any proposed structure(s), not including antennas; what is the principal exterior building material(s) proposed? The Applicant's current proposal calls for a building height of approximately thirty-five (35) feet at the structure's highest point. The detailed preliminary architectural plans submitted with this application provide a visual and tabular schedule of building materials proposed for use on this facility. b. What views in the immediate vicinity would be altered or obstructed? None; Not Applicable. c. Proposed measures to reduce or control aesthetic impacts, if any: The project is subject to an Administrative Design Review conducted by the City of Federal Way as part of their Process III/Project Approval process. Under FWRC Chapter 19.115, the project must present overall design continuity through the use of similar elements throughout the project, such as architectural style and features, materials, colors and textures. Building and site design for all institutional uses are guided by FWRC 19.115.100. With no impacts identified at this stage of the development process, and pending design review andfor evidence to the contrary, no mitigation measures are required or proposed. Bulletin #050 — October 17, 2016 Page 22 of 32 kAHandouts\Environmental Checklist �y FEDERAL WAY ■ PUBLIC SCHOOLS P SW 308TH ST. T f III n+avt+nwrruu y� PROP W.L0ING LfVE_W fO fa7lx Federal Way Public Schools Educational Service Center (ESC) 33330 Sm Avenue South Federal Way WA 98003 (253)945-2000 L i � MaCLCFiPT. 1 I LLL 5 ADJACENT RESIDENT!AL ZONE peso ararr:= ucr DIAGRAM Figure 8 - Community Design Guidelines Diagram . Lake Grove Elementary School 11. Light and Glare a. What type of light or glare will the proposal produce? What time of day would it mainly occur? The Applicant's proposal is not projected to produce any light or glare resulting in spillover onto adjacent properties as currently designed. Exterior lighting fixtures would be required for public safety and onsite security for students, employees and visitors. The Applicant will be providing a site lighting plan/photometric analysis during the building permit process which will document the potential effect of the project's use of focused, shielded exterior lighting fixtures to eliminate glare and/or spillover. b. Could light or glare from the finished project be a safety hazard or interfere with views? To the best of the Applicant's knowledge, as designed, spillover or glare will not result from this project; therefore not creating a safety hazard and/or interfering with any views. c. What existing off -site sources of light or glare may affect your proposal? The only sources likely to be inflicted on the site would come from vehicle headlights on adjacent rights -of -way; an occurrence which could be at least partially addressed through onsite perimeter landscaping. Bulletin #050 — October 17, 2016 Page 23 of 32 kAHandoutslEnvironmental Checklist Federal Watt Public Schools Educational Service Center (ESC) k-t FEDERAL WAY 33330 80 Avenue South PUBLIC SCHOOLS Federal way WA 9003 (253) 943-2000 d. Proposed measures to reduce or control light and glare impacts, if any: With no impacts identified at this stage of the development process, and pending evidence to the contrary, no mitigation measures are required or proposed —aside from the Applicant's commitment to a site lighting plan/photometric analysis and the use of shielded fixtures, as discussed above 12. Recreation a. What designated and informal recreational opportunities are in the immediate vicinity? To the best of the Applicant's knowledge, there are no designated or informal recreational opportunities in the immediate vicinity — aside from playgrounds associated with the existing educational facility. b. Would the proposed project displace any existing recreational uses? If so, describe. None; Not Applicable. The Applicant's proposal for a replacement educational facility will eventually include playgrounds and/or exterior recreational facilities to replace those facilities which will be demolished to facilitate the new construction. c. Proposed measures to reduce or control impacts on recreation, including recreation opportunities to be provided by the project or applicant, if any: With no long-term impacts on recreational opportunities identified at this stage of the project, and pending evidence to the contrary, no mitigation measures are required or proposed. 13. Historic and Cultural Preservation a. Are there any buildings, structures, or sites, located on or near the site that are over 45 years old listed in or eligible for listing in national, state, or local preservation registers ? If so, specifically describe. The existing Lake Grove Elementary School building was built in 1965; over fifty-three (53) years ago. However, to the best of the Applicant's knowledge, none of the buildings, structures and/or sites located onsite and/or in the immediate vicinity have been formally catalogued or are considered to be architectural, cultural or historic resources. As part of an ongoing commitment to the community, FWPS recognizes the importance of cultural preservation and the District's role in dedicating and preserving space for community use. b. Are there any landmarks, features, or other evidence of Indian or historic use or occupation? This may include human burials or old cemeteries. Are there any material evidence, artifacts, or areas of cultural importance on or near the site? Please list any professional studies conducted at the site to identify such resources. To the best of the Applicant's knowledge, there are no landmarks, features and/or other evidence of Native American or historic use or occupation onsite or in the immediate vicinity. No material evidence, artifacts or areas of cultural importance have been identified. Bulletin #050 — October 17, 2016 Page 24 of 32 01-landoutslEnvironmental Checklist Federal Way Public Schools Educational Service Center (ESC) FEDERAL WAY 33330 S°i Avenue South PUBLIC SCHOOLS Federal Walt' WA 003 (253) 945-2-2000 Given the lack of known resources or demonstrated potential for discovery, the Applicant has not retained a professional assessment of the site. If any unanticipated discoveries are made during construction, the Applicant will halt construction and consult trained professionals regarding the identification of such materials and consult with them on methodology and protocols to proceed with construction. c. Describe the methods used to assess the potential impacts to cultural and historic resources on or near the project site. Examples include consultation with tribes and the department of archeology and historic preservation, archaeological surveys, historic maps, GIS data, etc. To the best of the Applicant's knowledge, given the lack of evidence regarding known cultural andfor historic resources onsite or in the immediate vicinity, and the limited potential for future discoveries, additional research was deemed unnecessary d. Proposed measures to avoid, minimize, or compensate for loss, changes to, and disturbance to resources. Please include plans for the above and any permits that may be required. With no identified cultural or historic resources having been identified, aside from a commitment involving unanticipated discoveries and having protocols in place should any be uncovered, no additional measures have been implemented, nor are any proposed. Bulletin #050 — October 17, 2016 Page 25 of 32 kAHandoutslEnvironmental Checklist �r FEDERAL WAY ■ PUBLIC SCHOOLS K 14. Transportation Federal Way Public Schools Educational Service Center (ESC) 33330 80 Avenue South Federal Way WA 98003 (253) 945-2000 a. Identify public streets and highways serving the site or affected geographic area and describe proposed access to the existing street system. Show on site plans, if any. The Applicant originally commissioned a preliminary traffic impact analysis (TIA) in July 2018 to assess existing conditions, and assist in the preparation of a final site plan, pending a final version of the TIA. A final TIA was prepared by Transportation Engineering North West (TENW), Seattle WA, dated November 16, 2018, and has been added to this submittal. Vehicular and pedestrian access to the site primarily originates from SW 30801 Street, a two-lane east -west roadway; using access drives provided ❑nsite. North -south streets in the immediate vicinity include 1n Avenue South, to the east, and 81h Avenue SW, to the west. Additional two- lane east -west roadways in the vicinity include SW 304=h Street, S 305th Street and SW 31211 Street; however none of these streets provide direct access to the take Grove site. 231° Avenue South is a two-lane minor collector. Several two-lane unchannelized north -south roadways provide direct access to the school from SW 3041h Street and S 3051h Street —1s, Place SW, 2110 Avenue SW, 31a Avenue SW and 41h Avenue SW. b. Is the site or affected geographic area currently served by public transit? If so, generally describe. If not, what is the approximate distance to the nearest transit stop? To the best of the Applicant's knowledge, the site is not directly accessible to public transit users. The closest public transit stops appear to be located on SW 3081h Street and P Avenue South, approximately'/2 mile from the site, and South 312th Street and S'h Avenue South. c. How many additional parking spaces would the completed project or non -project proposal have? How many would the project or proposal eliminate? The Lake Grove campus currently provides forty-two (42) parking spaces; the Applicant's proposal is to increase parking by adding eighteen (18) spaces, for a total of sixty (60) spaces. The new buildings will be located to serve as a buffer between the vehicular access to the sites and the play areas. The automobile drive for parent and visitor traffic at Lake Grove Elementary School is located off SW 308th Street at the northwest corner of the site aligned with 4th Avenue SW. This drop-off loop is developed to accommodate a long on -site queuing area. The bus and service drive is also off SW 308th Street utilizing the existing curb cut between 3rd Avenue SW and 2nd Avenue SW. Panting is distributed between a west lot, serving visitors and community users, and a north lot which will be used primarily by staff. Building service access and the service yard is located off the bus loop. Fire lane access to the rear of the school uses the parent drop-off loop, passing around the southwest comer of the new school building; a fire truck hammerhead turnaround is incorporated into the hard surface play area south of the gym and multi -purpose spaces. Bulletin #050 — October 17, 2016 Page 26 of 32 k:\Handouts\Environmental Checklist Federal Way Public Schools Educational Service Center (ESC) FEDERAL WAY 33330 a Avenue South PUBLIC SCHOOLS Federal Way WA 900 �� (�, 5_24Q0 d. Will the proposal require any new or improvements to existing roads, streets, pedestrian, bicycle or state transportation facilities, not including driveways? If so, generally describe (indicate whether public or private). The Applicant originally commissioned a preliminary traffic impact analysis (TIA) in July 2018 to assess existing conditions, and assist in the preparation of a final site plan, pending a final version of the TIA. A final TIA was prepared by Transportation Engineering North West (TENW), Seattle WA, dated November 16, 2018, and has been added to this submittal; including a project description, a description of existing transportation conditions within the immediate site vicinity, methodology used to derive the trip generation estimate, trip distribution; traffic operational analysis of key off -site Intersections and site driveway intersections under cumulative Impacts, and identification of any transportation mitigation measures to offset traffic impacts The TENW study indicates under existing conditions, all intersections serving Wildwood were operating at LOS C or better, with volumelcapacity ratios (vJc) within the standards for signalized (1.2 vJc) and unsignalized (1.0 vlc) intersections. The report did take note of two conditions which will be addressed with construction of the new facility; the lack of crossing guards during AM - peak pick-up/drop-off and existing driveways failure to generally meet AASHTO sight distance requirements. Please refer to the study for a detailed discussion of TENW's recommendations. To the best of the Applicant's knowledge, and pending further permitting/plan review, no added streets will be required. Existing site access is provided via four site driveways onto SW 308th Street. Proposed site access would be provided via two existing site driveways onto SW 308th Street, one accessing the west parking lot and the other accessing the east parking lot. These site driveways would be converted to full access site driveways. All site driveway intersections would operate at LOS B or better with a v/c ratio under 1.0 during the AM peak hour and at LOS C or better with a v1c ratio under 1.0 during the PM peak hour with or without the project in 2020. The existing two center site driveways onto SW 308th Street would be removed. Student pick- upldrop off would continue to be provided via the west parking lot. Bus pick-up and drop-off would be relocated to the east panting lot. Proposed frontage improvements will include standard elements consisting of drive lane, parking lane, planter strip and sidewalk. To meet ADA requirements, AAA ramps will be provided at the curbs for intersections as needed. As part of the project, roadway frontage improvements to include curb, gutter, sidewalk and landscaping would be required along SW 308th Street, which could also require right-of-way dedication. Construction activity will either repair or replace existing site improvements such as curb, gutter and sidewalk as required by code, and upgrade perimeter landscape to full compliance with code. e. Will the project or proposal use (or occur in the immediate vicinity of) water, rail, or air transportation? If so, generally describe. No; Not Applicable. f. How many vehicular trips per day would be generated by the completed project or proposal? If known, indicate when peak volumes would occur and what percentage of the volume would be trucks (such as commercial and non -passenger vehicles). What data or transportation models were used to make these estimates? Bulletin #050 — October 17, 2016 Page 27 of 32 k:\Handouts\Environmental Checklist FEDERAL WAY ■ PUBLIC SCHOOLS Federal Way Public Schools Educational Service Center (ESC) 33330 P Avenue South Federal Way WA 98003 (253) 945-2000 Given the structured schedule - arrivals (AM Peak) and dismissals (PM Peak) - associated with educational activity, the Applicant feels existing traffic patterns and volumes will generally remain consistent with data associated with the existing facility. Changes in enrollment for the new facility, along with related staff increases, may affect trafficttrip-related data in the future. A complete transportation impact analysis of the proposed Lake Grove facility will be prepared in conjunction with Federal Way's Process Ill/Project Approval review. For an enhanced understanding of current LOS conditions, please refer to the data in the tables below. 201$ Existing AM Peak intersection Levels of Service -Study Intersq Lion .. L ec I V Rao Ungonahzed inferse'cl:oM h l - SW 308"' Si / 8'r Ave SW AWS I A 7.4 0.23 r3- 3W a)8111 St / 4t* AvC SW l 'Nest G'r FR Lot - - •- W13 Left A 7.6, 0.01 Ns I A 9.9 F.05 SB B 17.� 0.02 i3-SW30811St; WosfDriveway -i WBIeft i A 7.5 00+ =4 SW ' 08:11 S" / 3- ' ,Ave: S'N / Centef L:r WB Lett I A 7.6 �1.05 IN13 B i 0.'E 0 07 SB g 11.3 0.02 u5 SV::3;F_: ^ S1 /Cost ram'%,v+„:M1cy N8 A 9.3 0.09 #6 - SW 308'"' S' / 1.i A-ve S EB 8 10.4 0.13 '.98 C 19-0 01.11 NB Lett A 7.9 0.05 58 Left A 7.8 0,CV-) H -�F'.rrr r.r•-+-I. A' :r•Itl • ?` 7 �C:�+": i° Tr�r'n^�InNr� : -^ -- a�+�d 'ef'•1 2018 Exisfin2 PM Peak intersection Levels of Service Study Intersection LOS Delay sec V/C Rotio Unsionauzed tntersectrons N1-SW308",St/8"AvCS`N AWS I A 7.3 0.14 #2-SW3081,S`/4"'Ave SW/West Cr EBLeft A 7.8 0.00 'NB Leif A. 8.1 0.00 NB B 13.3 0,10 SB B 12.8 0.06 #3 • SIN 308"' St / We_t Driveway 2 WB Left � A 7.9 0.0 i NB B 10.8 0.02 T4 - SW 308'h it / 30 Ave -SW / Center Dr FB Leff A 7.7 ()of W8 Le`t ( A 8.0 0,03 INS B 12.6 +0.06 SB I B 12.0 0.03 415 . Sou 3C8'- St / East Dvvewcy NB 1j 8 10.0 0.10 #6-Sw308"St/ ]"AveS EB B 12.0 0.13 N1B i C 24,1 Q.17 NS Let A 8.2 0.04 SR Le" A 8.0 0.01 ���+cc'';„�•ny�G::iJue:rlYtir^,rV.�r �f:e•��i7rtav��;r7.fr:a:Lx:a�•ur-k:;:v:rcY+$t:n:J 2f.•IJ Bulletin #050 - October 17, 2016 Page 28 of 32 k:\Handouts\Environmental Checklist FEDERAL WAY ■ PUBLIC SCHOOLS M Federal Way Public Schools Educational Service Center (ESC) 33330 80 Avenue South Federal Way WA 98003 (253) 945-2000 The tables below reflect the number of additional trips generated and the revised intersection levels of service calculations, for the horizon year 2020, based on current Federal Way standards. Lake Grove Elementary School Trip Generation Summary Tirne Period in Out Told Weekday Daily 142 142 284 Weekday AM Peak Hcur of G,:aerator 53 45 93 Weekday Pr.; Peak Hour e' Generator 23 28 51 Weekday PM Peak Hour cf Adjacent Streef Trcaf is 12 la 26 2020 AM Peak Intersection Level of Service Impacts 20M Mffmt Project 2020 with Project Delay V/C Delay V/C Study Intersection LOS Ratio LOS sec Ratio gns gno_ted hntArsccrions r 1 - SW 30811" St / 8" Ave SW A`o A, 7,a 0,24 A 7.6 0 25 K2 - S'yd 30W- St / 4' Ave SW / '+°lest br EB Lei- - - - W8 flit -. 7.6 0,01 A 7.8 003 3 is 1 r10 0.05 B 2 53 I 10. 2 0.02 B 3 9.5 SW 3 8"' Si ! East f'r veway W3 Le It J A 3 N3 A 9.3 0.09 B 6 -6 5'dJ 308'" 5t 1 1 ' Avc: 5 c8 3 V i 0.14 B 8 J21.50J WB C- 39Q 0.12 C 8N5 3ett F 8,0 0.06 A 7SB e11 A. 7.8 0.00 A O specia Rcpar12:? Trans; -=-_-.on Zc- =-ch Ba=_7JIG. 2020 PM Peak Intersection level of Service Impacts 2020 Without Project 2020 With Project Delay V/C Delay V/C Study Intersection • LOS 1_-8c1 Relio LOS (5ecl ROW- srrc,"wd tntcrwa-: ins i al-SW'.3G8'' S1/8' Ave SW AWS A 7.3 0.14 A 7.3 0,i4 =2 - SW 308'- S1 / 4 - Av0 SW / West Dr _B Let- A 7.8 0.00 A 7,9 0.00 `+VB Leff A 8.1 0.00 A 8,2 0.02 N3 B 13-4 0.11 P, 4.8 017 53 ; B 13_C 0.06 B :4.1 0-G8 25 - 5W 3 8-- St / Ecst Driveway Wd Left - A 7.9 0-09 f:3 B 10.1 C1. 11 B 23 0 22 6-SW303 St/IrAve 5 I EB! 8 12.4 0.15 8 12.3 0, W 3 C 26.9 0.19 b 28.0 0-21 NB Left A 8.3 004 A 8.3 0-05 SB Leff A 8.0 C.01 A 8.0 0.01 SOL-- HigYrwa; '_'or^sty ,�'a-_-:`, Snecia: TaCort 2C9 ?r_nsr•crta5an?as=_march B-c-� _. <OiG. Bulletin #050 - October 17, 2016 Page 29 of 32 k:\Handouts\Environmental Checklist FEDERAL WAY PUBLIC SCHOOLS Federal Way Public Schools Educational Service Center (ESC) 33330 80 Avenue South Federal Way WA 98003 (253)945-2000 The existing gross floor area built at the Lake Grove Elementary School comprises approximately 51,238 square -feet (including the main building and portable structures) and serves approximately 550 students. The proposed gross floor area of the new school is approximately 60,322 square -feet with a student capacity to serve up to 600 students. g. Will the proposal interfere with, affect or be affected by the movement of agricultural and forest products on roads or streets in the area? If so, generally describe. No; Not Applicable. h. Proposed measures to reduce or control transportation impacts, if any: With no impacts identified at this stage of the development process, and pending evidence to the contrary, aside from required frontage improvements, no mitigation measures are required or proposed. Should increases in student enrollment related to expanded capacity be realized, traffic impact fees may be assessed at a rate of $2.00 per square foot of gross floor area (GFA) in accordance with current Federal Way code. However the Applicant cautions that as an educational facility with variable enrollment and staffing, traditional trip generation models may not accurately reflect the actual impacts associated with the new elementary school. 15. Public Services a. Would the project result in an increased need for public services (for example: fire protection, police protection, public transit, health care, schools, other)? If so, generally describe. Given the nature of the Applicant's proposal — replacing an outdated educational facility with a modern, updated facility — the Applicant does not project any increase in the demand for public services — either during demolition, construction or future operations. b. Proposed measures to reduce or control direct impacts on public services, if any. With no impacts identified at this stage of the development process, and pending evidence to the contrary, no mitigation measures are required or proposed. 16. Utilities a. Circle utilities currently available at the site: electricity, natural gas, water, refuse service, telephone, sanitary sewer septic system, All required utilities are currently available at the site; including, but not limited to, electricity, natural gas, water and sewer service, refuse and recycling service, telephone, cable television and other communication services. Lakehaven Water and Sewer District will be providing Certificates of Availability for both water and sewer later in the review/permitting process. Negotiations regarding the extent of specific Bulletin #050 — October 17, 2016 Page 30 of 32 k:\Handouts\Environmental Checklist FEDERAL WAY PUBLIC SCHOOLS Federal Way Public Schools Educational Service Center (ESCI 33330 P Avenue South Federal Way WA 98003 (253)9455-2000 system improvements needed to provide adequate capacity are ongoing and will be concluded via a Developer Extension Agreement executed between FWPS and Lakehaven. The site currently receives sewer service from a single connection point (SSCP 5183); wastewater is conveyed for sewage treatment via the use of a grinder pump. The onsite portion of proposed sewer improvements will see a new line extending through the parking field; connecting to the new school building. Preliminary analysis on the adequacy of existing water lines/service indicate two current points of service connection; one for domestic water and a second for irrigation purposes. To meet the fire flow required by South King Fire and Rescue (2,750 GPM) indicates replacement of an existing 6-inch main in South 30F Street with a 12-inch water main, at minimum, from 1st Avenue South, westward to 411, Avenue South. An additional 12-inch main may be required onsite as well. Pending further permittinglplan review analysis and the installation of proposed improvements onsite to facilitate new connections and to remove existing infrastructure, capacity of all public and franchise utilities is presumed to be adequate. b. Describe the utilities that are proposed for the project, the utility providing the service, and the general construction activities on the site or in the immediate vicinity which might be needed. Please refer to the civil engineering plans provided with this submittal — particularly the cover sheet where utilities and contacts are typically itemized, and the preliminary utility plans (water, sewer and stormwater) for specific details on proposed utility connections and the extent of necessary public improvements. Bulletin #050 — October 17, 2016 Page 31 of 32 UFlandouts\Environmental Checklist FEDERAL WAY PUBLIC SCHOOLS C. SIGNATURE Federal Way Public Schools Educational Service Center (ESC) 33330 804 Avenue South Federal Way WA 90003 (253) 945-2000 The above answers are true and complete to the best of my knowledge. I understand that the lead agency is relying on them to make its decision. . ( � Signature: 7,� 'y Name of Signee: Robert McNeill Position and Agency/Organization: Senior Planner, Barghausen Consulting Engineers, Inc. Date Submitted: September 25, 2018; revised January 7, 2019 Bulletin #050 — October 17, 2016 Page 32 of 32 k:\HandoutslEnvironmental Checklist -- CBREIHEEMY' I FEDERAL WAY PUBLIC SCHOOLS ID Task DWatm' Task Name Duration Start Finish pmd:,assprs %Complete Ind HaN 1st Hall NM Half 1st Half 2nd Half ;1st HaN 1 .f 660 drys MIRROR LAKE/LAKE GROVE/WILDWOOD GMdays Mon 2/19/18 Fri 8/28/20 7% 2 ? 81 days -Developmerd r� 3 14 63 days Ed Spec 63 days Fri 3/9118 Tue 6/5/18 99% i-1 4 ✓ '4 0 days Ed Spec Harvest LGV 0 days Mon 3/26/18 Mon 3/26/1B 100% 0 3/26 5 ✓ ;a 0 days Ed Spec Harvest MIR 0 days Tue 3/27/18 Tue 3/27/18 100% 3/27 6 t/ M 0 days Ed Spec Harvest WIL 0 days Tue 3/27/18 Tue 3/27/18 100% 3/27 7 1% 1 day Draft Programmatic Requirements 1 day Fri 3/9/18 Fri 3/9/18 100% 8 ✓ R4 1 day Feasibility Study 1 day Fri 3/16/18 Fri 3/16/18 100%: 9 ✓ '4 1 day Preliminary Cost Model 1 day Fri 5/4/18 Fri 5/4/18 100% 10 ✓ -.4 28 days Draft Ed Specs 28 days Wed 3/28/18 Fri 5/4/18 5 100% 11 ✓ ' 3 days Ed Spec Recommendations 3 days Mon 5/7/18 Wed 5/9/18 10 100% 12 ✓ -4 5 days Supt Review 5 days Thu 5/10/18 Wed 5/16118 11 100% ' 13 1 day Supt Recommendation 1 day Thu 5/17/18 Thu 5/17/18 12 100% ' 14 0 days Final Ed Specs to School Board 0 days Thu 5117/18 Thu 5/17/18 13 0% ; 5117 15 r4 0 days Board Approval 0 days Tue 6/5/18 Tue 6/5/18 14FS+13 days 0% 6/5 16 14 ...17 r4 130 days Draft Design Standards 130 days Tue 4/24/18 Mon 10/22/18 10% �1 18 4 109 days Capital Projects Team Drafts Standards 109 days Tue 4/24/18 Fri 9/21/18 11% �- 19 14 2 wits Supt Review 2 wks Man 9/24/18 Fri 10/5/18 18 0% 20 4% 1 day Supt Recommendation to Board 1 day Mon 10/22/18 Mon 10/22/19 19FS+2 wks 0% 21 14 0 days Board Approval 0 days Mon 10/22/18 Mon 10/22/18 20 0% q 10/22 22 "4 23 ✓ -4 18 days Design Oversight Committee (DOC) 24 3/ "4 0 days DOC Meeting #1 25 ✓ a4 0 days DOC Meeting q2 26 ✓ -4 0days DOC Meeting 43 27 ✓ 0 days DOC Meeting N4 28 29 ✓ -4 16 drys Design Review Committee (DRC) 30 ✓ Mi. 0 days DRC Meeting #1(Complete) 31 0 days DRC Meeting R2 (Complete) 32 -4 0 days DRC Meeting 83 (Complete) Task Pm*t Summary Project: ESs draft schedule Split -••• Inactive Task Date: Fri 1/4/79 M es,one a m tise, Milestone Summary r -------- I Inactive Summary 18 days Mon 3/5/18 Thu 3/29/18 100% n 0 days Mon 3/5/18 Mon 3/5/18 100% q 3/5 0 days Mon 3112/18 Mon 3/12/18 100% 0 3/12 0 days Mon 3/19/18 Mon 3/19/18 100% ® 3/19 0 days Thu 3/29/18 Thu 3/29/18 100% ® 329 16 days Mon 4/16/28 Tue 5/8/18 200% n 0 days Mon 4/16/18 Mon 4/16/18 100% ♦ 4116 0 days Mon 4/30/18 Mon 4/30/18 100% ® 4/30 0 days Tue 5/8118 Tue 5/8/18 100% 0 5/8 Mamlal Task 1:x-r- "•a-�3 start -only L Deadline 1 Durstiamonly Finish-o ] Progress Manual Summary 8ollup Estemal Tasks Manual Progress Manual Summary r --------1 External Milestone Page 1 6 FEDERAL WAY PUBLIC SCHOOLS M 0 Task 35 4 34 A 35 sf 4 ss ✓ 4 37 .✓ � U a/ 4 39 .► 4 40 4 42 r/ 4 13 VF 4 44 A/ 4 4 t✓ 4 46 4 17 u ✓ 59 4 S1 4 S3 sa 4 SS 3 % 56 4 S7 4 56 4 59 4 60 J 61 ✓ 4 62 4 63 3 4 64 4 Du,Ms- Tosk hl • O. Vn Stan Finn, CBREIHEEW arcdKH..n %Ccmolete 20Half Ist H," 2n4tl.1f_ Igsi.lt .7ra01.y 1st Hall 3m am 'GOCMAppra.al and ROCLirement 300:drys Mon t/L(I8 Fri 4/1.2f19 39% 15 days Prep PRC Application 15 days Mon 4/2/18 Fri 4/20/18 100% i 0 days Submit Application 0 days Fri 4/20/18 Fri 4/20/18 35 100% 4/20 . 0 days PRC Hearing 0 days Thu 5/24/18 Thu 5/24/18 100%; •I S/24 0 days PRC Approval Letter 0 days Wed 6/6/18 Wed 6/6/18 37FS+2 wks 100%! { 6/6 2 days Advertising & RFP Distribution 2 days Thu 5/24/18 Fri 5/25/18 37 100% 3 wk. GCCM Responses 3 wks Mon 5/28/18 Fri 6/15/18 39 100%� 2 days Interviews 2 days Thu 6/28/18 Fri 6/29/18 40FS+8 days 100% 5 days Capital Projects Team Summary and Recommendation 5 days Mon 7/2/18 Fri 7/6/18 41 100% i 4 days Notice of Intent to Award 4 days Mon 7/9/18 Thu 7/12/18 42 100% !z 0 days Board Approval 0days Tue 7/24/18 Tue 7/24/18 43FS+8 days 100% jl_7/24 0 days GCCM Award 0 days Tue 7/24/18 Tue 7/24/18 44 100% • 7/24 1 day Meeting with Consultants 1 day Tuc 5129/18 Tue 5/29/18 IW% 33 days Pre -Application Meeting(s) 33 days Wed 5/30/18 Fri 7/13/18 48 IM% 54 days Application Materials & SEPA Checklist Finalized 54 days Mon 7/16/18 Thu 9/27/18 49 22% 0 days SEPA Review Application Submitted 0 days Thu 9/27/18 Thu 9/27/18 50 0%: 2 days Completeness Determination issued 2 days Fri 9/28/18 Mon 10/1/18 51 0 days Notice of Application Distributed 0 days Man 10/1118 Mon 10/1/18 52 16 days Comment Period 16 days Tue 10/2/18 Tue 10/23/18 53 0%! 10 days Review and RevLse SEPA 10 days Tue 12/25/18 Mon 117119 09e 15 days Appeal Period 15 days Tue 1/8/19 Mon 1/28/19 55 0% 0 days Final Completion 0 days Mon 1/28/19 Mon 1/28/19 56 0%, 2 wits Certify Gross Square Footage 2 wks Man 6/4/18 Fri F7115/18 100% 0 days D3 0 days Mon 9/3/18 Man 9/3/18 1W%, 3 wits D4 (OSPI) 3 wks Mon 9/3/18 Fri 9/21/18 61 0% 0 days DS 0 days Mon 1/7/19 Mon 1/7/19 0%' 4 wks D6 (OSPI) 4 wits Mon 1/7/19 Fri 2/1/19 63 0% Task Projectsummary Project ESs draft schedule split .. . • ...... • 1-6.e Task Date: Fri 1/4/19 Mllatone • Inactive S-um:-na Summary r� Inactive Summary Mamal Task I wart-m,y oaraaoo-only Fl.6h-ony Manual Summary Rolh,p Ea nal Tasks Manual Summary 7----1 Ex .l Milestone Page 2 C Deadllne 7 Progress Manual Progress all s 9/27 i p 14/t a 1/25 •, 9/3 ir p 1/7 tRfFEDEAAY PUBLIC SCHOOLS jD -.T k 65 66 67 6a 69 �y 70 8 71 T 72 m/ -4 73 y/ 74 76 �i 77 'A 7a -, 79 '4 80 ,✓ s1 .J sj 93 �y 84 � 85 93 ss!� 06 3 '4 e7 14 88 14 89 90 91 92 93 14 94 96- 1 Duration Task Name 3 days D7 2 wks DB (OSPI) 0 days D9 4 wks D10 (OSPI) owaYmre Start ipmt� Predecessors %Complete 2nd Half 1st Ha8 3 days Mon 2/4/19 Wed 2/6/19 64 0% 2 wks Thu 2/7/19 Wed 2/20/19 65 0% 0 days Fri 3/15/19 Fri 3/15/19 0% 4 wks Fri 3/15/19 Thu 4/11/19 67 0% r P _— —IMI 23 wks 5D Package Development 23 yaks Mon 4/16/18 Fri 9/21/18 16% 0 days DRC Meeting LGV 0days Tue 6/5/18 Tue 615/18 100% 0 days DRC Meeting WIL/MIR 0 days Wed 6/6/18 Wed 6/6/18 100% 0 days DRC Meeting MIR/LGV/WIL (Concepts) 0 days Tue 6/19/18 Tue 6/19/18 100% 0 days DOC Meeting MIR/LGV/WIL(Concepts) 0days Mon 6/25/18 Mon 6/25/18 100% 0 days Architect SD Package Submital 0 days Fri 9/21/19 Fri 9/21/18 71 0% 6 days SD Package Cast Review 6 days Thu 9/13/18 Thu 9/20/18 76FS-7 days D% 0 days Supt. Review/Approval of SD Package 0 days Fri 9/21/18 Fri 9/21/18 77FS-1 day,76F5 0% 0 days Final SO Package for Review/Approval-Board&Submitted to City of Federal WO days Tue 9/25/18 Tue 9/25/18 78FSt3 days 0% 1 day M&O Meeting 1 day Mon 8/20/18 Mon 8/20/18 100% 1 day M&O Meeting 1 day Tue 8/21/18 Tue 8/21/18 80 100% 1 day Pre -Application Meeting with Federal Way Permit Center 1 day Thu 8/23/18 Thu 8/23/18 100% 37 days DD Package Development 37 days Wed 9r','tf1116 Thu 11/15/19 79 O4i 1 day User Meeting (MIR) 1 day Tue 10/2/18 Tue 10/2/18 78FSf7 days 0% l day User Meeting(WIL) Iday Wed 10/3/18 Wed 10/3/18 86 0% 1 day User Meeting (LGV) 1 day Thu 10/4/18 Thu 10/4118 87 0% 1 day M&O meeting 1 day Mon 10/15/18 Mon 10/15/18 88FSi6 days 0% 1 day DRC (MIR) 1 day Tue 10/16/18 Tue 10/16/18 89 0% l day DRC(WIL) Iday Wed 10/17/18 Wed 10/17/18 90 0% 1 day DRC (LGV) 1day Thu 10/18/18 Thu 10/18/18 91 0% 1 day DOC (MLW) Materials and Finishes 1 day Tue 10/23/18 Tue 10/23/18 92FS-2 days 0% 13 days VE/LCCA/Prlcing 13 days Wed 10/24/18 Fri 11/9/18 93 0% 1 day 100% DD Daft Package 1 day Mon 11/12/18 Mon 11/12/18 94 0% 1 day 100 %DD Package Submit to Superintendent 1 day Tue 11/13/18 Tue 11/13/18 95 0% C CBREIHEERY I i 2nd Ha8 I tHalf 2nd Half 19Vae 4 3/15 p 6/5 p 6/6 p 6/19 ® 6/25 +19/21 q 9/21 q, 9/25 Task ------ - Project Summary Manual Task -9 Start -only E Deadline L Project ESs draft schedule spit Inactive Task Duration -Dory "'�'''_'=. Fn1sh-Dory ] P,oeress t Date: Fri 1/4/19 Mlieslne O Inactive WIMIne Manual 5ummary Rollup W—al Tasks Manual Progress Summary f-1 Inactive Summary Manual Summary t---------1 Fats, —I Milestone ' Page 3 tCBREIHEERY FEDERAL WAY PUBLIC SCHOOLS 10 U 14* Duration Task Name Duration Start Finish Predace,%N %Complete 2nd Half 1st Half 2nd Ha11 1st Half 2nd Half 1st Helf 97 4 2 days 100% DO Package for Review (M&O, DOC and DRC) 2 days Wed 11/14/18 Thu 11/15/18 96 0% 9a _q 4 0 days Board Review/Approval of DO Package 0 days Tue 11/20/18 Tue 11/20/18 97FS+3 days 0% q, 11/20 99 4 100 4 F.f-1 101 4 4 wks 90% CD Package (For Bid) 4 wks Wed 11/7/18 Tue 12/4/18 98FS-2 wks 0% " 102 4 11 days Constructability Review 11 days Wed 11/21/18 Wed 1215/18 101FS-2 wks 0% 103 4 11 days 90% CD Cost Estimate 11 days Wed 11/21/18 Wed 1215118 101FS-2 wks 0% -57 104 4 1 day 90% CD Pkg Submit to Supt 1 day Thu 12/6/18 Thu 12/6/18 103 0% 1% 4 1 day 90% CD Package Submit to M&O 1 day Fri 1217118 Fri 12/7/18 104 0% 106 4 1 day 90% CD Pkg to DOC/DRC 1 day Mon 12/10/18 Mon 12/10/18 105 0% 107 4 1 day 90% CD FWPS Review and Approve 1 day Tue 12/11/18 Tue 12/11/18 106 0% t0! 4 3 days 90% CD Package Board Approval 3 days Wed 12/12/18 Fri 12/14/18 107 0% 109 4 1 day? 100% CD Pkg to Supt 1 day? Mon 2/19/18 Mon 2/19/18 0% 110 4 1 day? 100% CD Pkg to M&O 1 day? Mon 2/19/18 Mon 2/19/18 0% 11 % 4 1 day? 100% CD Pkg to DOC/DRC 1 day? Mon 2/19/18 Mon 2/19/18 0% 112 1 day? 100% CD Pkg FWPS Review and Approve 1 day? Mon 2/19/18 Mon 2/19/18 0% 11.1 4 1 day? 100% CD Pkg Board Approval 1 day? Mon 2/19/18 Mon 2/19/18 0% 114 4 its 4 -- - r f•---1 Ila 0days Presubmittal 0days Wed 6/20/18 Wed 6/20/18 7p015 0 6/20 117 4 4 wks Permit Application (From 90% CD Set) 4 wks Tue 2/5/19 Mon 3/4/19 101FS+8 days 0% '+ 118 4 1 mon Federal Way Permit Center Review 1 mon Tue 3/5/19 Mon 4/1/19 117 0% 119 4 10 days Responses to Review Comments 10 days Tue 4/2/19 Mon 4/15/19 118 0% ' 120 4 0 days Resubmit to Permit Agency 0 days Mon 4/15/19 Mon 4/15/19 119 0% 0 4/15 121 4 1 mon Permit Agency Review 1 mon Tue 4/16/19 Mon 5/13/19 120 0% 122 4 0 days Permit Issuance 0 days Mon 5/13/19 Mon 5/13/19 121 0% m 5113 123 4 124 4 t 125 4 6 wks Submittals/Release Packages Coordination 6 wks Wed 12/5/18 Tue 1/15/19 101 0% 126 4 12 days GCCM Bid Packages 12 days Wed 1116/19 Thu 1/31/19 125,101 0% 127 4 3 wks Bid Reviews/Leveling 3 wks Fri 2/1/19 Thu 2/21/19 126 0% 1- ill 4 5 days MACC Review and Approval 5 days Fri 2/22/19 Thu 2/28/19 127 0% Task ---:: sr.:. Project Summary Manual Task L' .^- - ;t Start -only C Deadline 4 Project: ESs draft schedule Split nactive Task Duration -only a -- c - -. _ -: � Fn'rsh-only Prognss Date: Fd 1/4/19 Mdesmne 0 Inac—Milestone Manual Summary Rollup --mal Tasks Mamial Progress Summary r - - - - - - - "1 Inactive Summary Manual Summary f-1 fitemal Milestone Page 4 -- — CBREIHEERY, FEDERAL WAY PUBLIC SCHOOLS 10 T*k Duration rack Name Duration Start ek�,h Pmde-se- 15 Complete. 2nd Hall 1st Hall 2nd Hall 1st Hall 2nd Hall !1st Hall 1;9 "4 10 days MACC Contract Executed 10 days Fri 3/1/19 Thu 3/14/19 128 0% 170 4 3 wks Subcontractor/Supplier Awards 3 wks Fri 3/15/19 Thu 4/4/19 129 0% 131 n 132 e t 133 4 2 wks Vacate Lake Grove & Wildwood 2 was Thu 6/20/19 Wed 7/3/19 0% 134 4 10 days Mobilization 10 days Thu 7/4/19 Wed 7/17/19 133 01A 135 4 4 wks Demolition (Lake Grove & Wildood) 4 wks Thu 7/18/19 Wed 8/14/19 134 0% 7 1% 4 wks Abwi;it ent{1alm Grova & Wildoodl 4 wks Thu 7/11/19 Wed 817/19 135551 wk 0% ►•: 137 9 mans Site/Civil/Grading 9 mans Thu 8/8/19 Wed 4/15/20 136 0%` 1111 4 2 mans Foundations 2 mans Thu 10/3119 Wed 11/27/19 137FS-7 mans 0% >' 139 4 2 mans Structural Steel 2 mans Thu 10/31/19 Wed 12/25/19 138FS-1 man 0% r~ 140 4 1.5 mans Concrete 1.5 mans Thu 12/12/19 Wed 1/22/20 139FS-2 wks 0% - 141 4 1 man Framing 1 man Thu 1/23/20 Wed 2/19/20 140 0% 142 It 1 man Envelope & Glazing 1 man Thu 1/23/20 Wed 2/19/20 140 0% 141 4 2 mans MEP Systems 2 mans Thu 2/20/20 Wed 4/15/20 142 0% 144 % 3 mans Interior Construction 3 mans Thu 2/20/20 Wed 5/13/20 141 0% ids 4 2mans Finishes 2mans Thu 4/30/20 Wed 6/24/20 144FS-2 wks 0% �'Yu 146 4 4 wks FF&E 4 wks Thu 6/25/20 Wed 7/22/20 145 0% 147 4 4wks Systems Commissioning 4wks Thu 4/16/20 Wed 5/13/20 143 0% 149 4 3 wks Inspections 3 wks Thu 6/25/20 Wed 7/15/20 145 0% T49 4 4wks Punchlist Activities 4wks Thu 6/25/20 Wed 7/22/20 145 0% 150 1 0 days Building Substantial Completion 0 days Wed 7/22/20 Wed 7/22/20 149 0% 1$1 4 2days Certificate of Occupancy 2days Thu 7/16/20 Fri 7/17/20 148 0% 1S2 4 4 wks Move and Occupy 4 wks Mon 7/20/20 Fri 8/14/20 151 0% 153 IF 6.5 mans Landscaping & Remaining Field Work 6 5 mans Thu 4/16/20 Wed 10/14/20 137 0% 154 4 0 days Site Substantial Completion 0 days Wed 10/14/20 Wed 10/14/20 153 0% 155 4 3 mans Closeout 3 mans Thu 9/17/20 Wed 12/9/20 150,154SS-1 mop 0% 156 4 I Sr 156 4 10 days Mobilization 10 days Fri 4/5/19 Thu 4/18/19 130 0% in 4 2 wks Site Prep/Safety 2 wks Fri 4/12/19 Thu 4/25119 158FS-5 days 0% 160 4 9 mans Site/Civil/Grading 9 mans Fri 4/26/19 Thu 1/2/20 159 0% •r --- — Task Project Summary Manual Task F:+tiea'Y�: =:•I Start -only C {"*W 3 Project ESs draft schedule Split Inactve Task Duration-onlyFinish-any 7 Pmg". Date: Fn 1/4/19 Mll.tone C Inactive Mlestone Manual Summary Rellup External Tasks M&Aud Progress Summary r — — — — — — —y Inactive Summary Manual Summary r ------1 Extemal Milestone Page 5 CBRE I HEE" FEDERAL WAY PUBLIC SCHOOLS ID 0 Misk D-16- Task Plame Duration sun nth pmdwns a8 [nnaalere 2nd HeH_'1st H.n 2nd Han_ 1StHaH _ h.d Haa 1st Ha11 161 42 mans Foundations 2 mans Fil 6/21119 Thu $/15/19 160FS-7 mans 0% wall 162 14 2 mans Structural Steel 2 mans Fri 7/19/19 Thu 9/12/19 161FS-1 man 09C A& 163 1.5 mans Concrete 1.5 mans Fri 8/30/19 Thu 10/10/19 162FS-2 wks 0% �f 164 1 man Framing 1 man Fri 10/11/19 Thu 1117/19 163 0% it 165 1 man Envelope & Glazing 1 man Fri 11/8/19 Thu 1215119 164 0% ; 166 14 2 mans MEP Systems 2 mans Fri 12/6/19 Thu 1/30/20 165 0% ilY 167 � a$ 3 mans Interior Construction 3 mans Fri 1/31/20 Thu 4123/20 166 0% Tom 168 4 2 mans Finishes 2 mans Fri 1/17/20 Thu 3/12/20 166FS-2 wks 0% I� 169 14 4 Wks FF&E 4 wks Fri 3/13/20 Thu 4/9/20 168 0%, $ 170 14 4 wks Systems Commissioning 4 wks Fri 4/10/20 Thu 5/7/20 169 a%, 171 14 3 wks Inspections 3 wks Fri 5/8/20 Thu 5/28/20 170 096' 172 144 wks Punchllst Activities 4 wks Fri 5/29/20 Thu 6/25/20 171 0% 173 10 -4 2 wks Vacate Existing Mirror Lake 2 wks Fri 6/19/20 Thu 7/2/20 0% 174 4 0days Building Substantial Completion 0days Thu 6/25/20 Thu 6/25/20 172 0%; 1 175 14 2 days Certificate of Occupancy 2 days Fri 6/26/20 Mon 6129/20 174 0% 176 14 4 wks Move and Occupy 4 wks Tue 6/30/20 Mon 7/27/20 175 0% 177 14 4wks Demoinio n a f old M irrar L akF 4wks Fri 713/20 Thu 7/30/20 173 0% 17e 4 4 wits Abatement Old Mirror Lake Site 4 wks Fri 6/26/20 Thu 7/23/20 177SS-1 wk 0% i 179 4 9 mans Landscaping & Remaining Field Work 9 mans Fri 1/3/20 Thu 9/10/20 160 09L 180 11 0 days Site Substantial Completion 0 days Thu 9/10/20 Thu 9/10/20 179 0%; 181 14 3 mans Closeout 3 mans Fri 8/14/20 Thu 11/5/20 174,18055-1 ma 0% Task Proje suer—y Manual Task r - 1 start -only C Project ESs draft schedule spur lnacreTask Du.a6ommly Fnish-any 7 Date Fri 1/4/19 Mimi— 1P Inactive Mlkstwe Manual summary Rallup Ex rwl Tasks Summary r-------7 Inactive Summary Mamal Summary Bdurnal Milestone Page 6 Deadline Pmgiess Manual Progress CBREIHE W FEDERAL WAY PUBLIC SCHOOLS 7nd11alf - 1stHalf 2nd Hall_ 1scHaH_ ;2nd Half_ _1914ag__ 2nd 14.1, 1st.Half _2rW-HaU_ lst_HaH_ _tad Hall lrt Fjali_ 2n4Half__ 1ktHal1_._•7,nd Half _ lytN+lf 7-d-A lgHalf ;2nd Hall '1st Half 2.d Hall _ 1stN_aU_- 2pd HeX .11sfHaH Task Projatsummary Manual Task 1 1 sort-ony f Deadil. + Project ESs draft schedule sport ....... laactive Task Duration -my FrAsh-my 7 Progress — Date:Fril/4/19 Ml w- d, Inactive Milestma Maual summary gollup Fxtemal Tasks Mamal Progress — Summary 1�1 Inactive Summary Mamal summary r — — — — — — —1 rst 1Milestone Page 7 CBREJEMM FEDERAL WAY PUBLIC SCHOOLS 20H•lf._ tst}ialf_ 2nd Hay '1st Hay_- Ind Hall- 1n HIIL . _21 Hdf_ 1st H• --- 2MHJl 119Half - 2nd Nall 10 NO '2nd_Hal _ 19 NO '2ndHalf In Half _2n4 H•If _1st Half 2gdy.q _119Hal end Half 1st B•l-_ end Half 1st Hal_ 2 Project: ESs draft schedule Dater Fri 1/4/19 Task PmjutSumm,ry Split ........ - nysmx 4s M.latnne • rnatmv Miknett Summary 1----1 rnxh7w saw.x•ry Manual Task h stad-ony D—lmn-my FMish-uny Manual Summary Ralbp -- &temal Tasks Manual summary Fxumal Milestone Page B Daadrne + Progress — Maewl Pmgy — CBREjHEERY FEDERAL WAY PJBUC SCHOOLS 2n;J Hall III HMO ;nd H.H_. 1,1(_H.If _ 2nd Hilf _ 10 Had 2nd Hit _ 1sOaN__ '7ndNalf. 1st Half 2n4HaH _'lFtJ-I f _ ,2nd Half _ lst HeH__ 2n".H- 11".l[ __ Z!d H.H _'LstHal[ 2nd Half lstlldl 29d Hatl III H4N 2nd H.H _ WHO .2 Task .-. Pmjec[Summary M... I Task I I Suit -only C Deadline + Project ESs draft schedule Spla .................. Inactive Task Duration -only Finish -only 7 progress Date: Fri 1/4/19 Mllamne Inacdm Milestone Manual Summary ltollup External Tasks Manual Progress Summary Imacdve Summary Manual Summary r'- — - - — - — - 1 External Mllasmne Page B - CBREIHEMU FEDERAL WAY PUBLIC SCHOOLS Rmd HaIL 153 Hall 2Rd HeH _1st HeH_ :.ZpdM.K- 1st Haa -2n4Hal(_•1st}Ialf Zndxat[ _,15tHelf- _god Half_ :Ist Haa Zed HAY ldHalf_ 2n..d HaK ItIMA 2n"lff '1st Half_ :2nd_H.9 '1st -Half_ 2o48a11' tstNM 2nd Haa .'-1stHdL- 2 Task Prgectsum"y Mamsal Task { I sWt-only E Daadr,- ProjectESsdraft schedule split ...InacU.T.sk Damao -only Firdsh-only 7 Progress Date. Fri 1/4/19 M+estane ♦ Inacdve Milestone Manual summary Rollup Fatemal Tasks Mamal Prsagress Summery 1"-1 Inactive summary Manual Summary r--------- I ed—1 Mlkstsme j Page 8 Q 6 CBREIHEERY FEDERAL WAY PUBLIC SCHOOLS 2nd.Half :1st Half_ 12n_d Half 1slHe1. 2ndlfae_- 1st Mall led HaN 1st HO 2rd01 _ lft yaH _ 2ndHal[_,1}LHplf __:2qd HaL. 'Ig Hatf _ 2nd HOL 1st.Half _ 2nd Hplf.__1sl_HaH _ �2rd H•1[_ 1st Half _ '2nd Half ls_t Half 2nd Hag �IstHllf 7 Task pre:eel Suaoeary Mamral Task I I Start -only C Deadline Project ESs draft schedule sptd fnsckv. laps Duntbn-mly Anisf—ly ] pmgreas Date Fri 1/4/19 Nkletooe ♦ Ina,th. WAt— Mamral Summ. o ry Rna p � External Tasks Manual progress Summery f-----1 u.acpee Summary Manual Summary 1--------- 1 Faramel Mlleslone a - - - - — - CBREIHEMY FEDERAL WAY FUSLI[ SCHOOLS 21vf Halr 1st Hatf JnpH11f lsttlaa—)ndr•af 1st Hag_ ';nd Half. 1st Hal[ 2rsd Half Ia w.s PM"j$ 15tH+g- L2nd Hal[ -'1st Half 2nd Hag_-1a11iarf 2W-HaH-- 13t Hal[_ -2nd H•N lit Half 2n4Hax- lst_Hjtf 2nd Half_ 1qHalf 1, 6Ms Task Projact5ummary Project. ESs draft schedule Sp rrt -- Inactive Task Date: Fri 1/4/19 M6estane ♦ Inactive Milestone Summary Inactive Summary Manual Task I t start -only Duration -only Fm&h-only Martial Summary Rollup Fxterrlel Taslo Manual Summary r ------1 External MNaatona Page 9 E Da.dnna + 7 progress — ManualProgress a s s o c i a t e a earth sciences i n c o r p o r a t e s April 25, 2019 Project No. 180212EO01 Federal Way Public Schools 1211 South 332"d Street Federal Way, Washington 98003 Attention: Mr. Ray Vefik Subject: Comment Response Lake Grove Elementary School Replacement Federal Way, Washington Dear Mr. Vefik: RESUBMITTED APR 302019 CITY OF FEDERA'. WAY ockywry DEVE' OPtiEl►17 The purpose of this letter is to respond to a King County request for geotechnical comment regarding the underground Stormtech chambers at Lake Grove Elementary School. Associated Earth Sciences, Inc. (AESI) was provided with the following King County comment from the design team. 5. If underground detention chambers are approved, it appears that large portions of them are, or will be located in 'fill" soils, per the geotechnical report. Additional documentation shall be provided, through further geotechnical evaluation and the manufacturer's recommendations, that shows this type of system is compatible infill-type soils. We reviewed a grading and drainage plan set for Lake Grove Elementary School dated March 28, 2019, for preparation of this letter. The plan set shows several rows of underground Stormtech chambers located north of the proposed school building in the north -central portion of the site. We were also provided with a bottom of foundation stone elevation of approximately 338.50 feet and a top of chamber elevation of approximately 343 feet for the Stormtech system. Explorations completed by AESI at the project site include 12 exploration borings (EB-1 through EB-12W). Borings E13-1 through EB-11 are discussed in detail in our report titled "Subsurface Exploration, Geologic Hazard, and Preliminary Geotechnical Report," dated June 14, 2018, and revised February 20, 2019. EB-12W was completed as a borehole infiltration test well on February 18, 2019, as part of a hydrogeologic study and was not included in our above - Kirkland Office 1911 Fifth Avenue I Kirkland, WA 98033 P 1425.827.7701 Mount Vernon Office 1 508 S. Second Street, Suite 1011 Mount Vernon, WA 98273 P 1425.827.7701 Tacoma Office 11552 Commerce Street, Suite 102 1 Tacoma, WA 98402 P 1253.722.2992 www.aesgeo.com referenced report. Therefore, we have attached with this letter a "Site and Exploration Plan," showing the locations of the explorations completed at the site, including EB-12W, and the exploration log for EB-12W. Explorations, EB-4, EB-7, and EB-12W were completed in the vicinity of the proposed detention chambers. These explorations encountered native sediments or existing fill near the surface that extended to depths ranging from 2.5 to 4 feet below the surface. These depths approximately correlate to an elevation range of 346 feet to 349.5 feet. Based on the chamber elevation provided to us, we anticipate that the rocked section of the Stormtech chambers will be fully embedded into native sediments which are suitable for bearing. We anticipate that the native sediments will consist of silty sands with marginal infiltration potential. Therefore, we recommend that a detention system not intended to infiltrate, is lined with an impermeable liner with a minimum thickness of 30 mils. We hope this information meets your present requirements. Please contact the undersigned at (425) 827-7701 should you have any questions. Sincerely, ASSOCIATED EARTH SCIENCES, INC. Kirkland, Washington Kurt D. Merriman, P.E. Senior Principal Engineer Attachments: Site and Exploration Plan Exploration Log EB-12W KDM/ms 180212E001-7 Projects\20180212\KE\W P 2 190M1 ke Gm ES 1180212EO01 F2 S-E-P2-19.rr En ° Smly o I m z 0 0 D m m 0 O o Gy c T z z Dio m m m z X r 1 O r °z_ O N m D r- m O �c D z °z_ ° A o m X m a 4 �� mm <� g n p z �' z z z° �o m {Mm 0 0 a �� Km m j m O r O m r m D m D D o � o z z _ _. is p �c Z) �O n z m O Z€ w 10 e� N m g K m O ¢ Vl 6 6� 'mD Z A to ° o Well -graded gravel and Terms Describing Relative Density and Consistency Li m o U o U GW gravel with sand, little to Dens!SPT(2)blows/foot a) o no fines Very Loose 0 to 4 Coarse- d U° in Loose 4 to 10 Grained Soils Medium Dense 10 to 30 Test Symbols y HI 0 fl 0 00000 0 0 GP Poorly -graded gravel �n 0 0 0 0a and gravel with sand, Dense 30 to 50 o o , 6 c 00000 000 little to no fines Very Dense >50 G = Grain Size w Z o z LO ° 00000 00 M=Moisture Content Consistency SPT(2iblowsffoot A = Atterberg Limits c c Silty gravel and silty Very Soft 0 to 2 C= Chemical cc c O GM gravel with sand Fine- Soft 2 to 4 DD = Dry Density u e e Grained Soils Medium Stiff 4 to 8 K = Permeability ae Stiff 8 to 15 N Clayey gravel and Very Stiff 15 to 30 y Fa GC clayey gravel with sand Hard >30 o Component Definitions `o Well -graded sand and t Descriptive Term Size Range and Sieve Number SW sand with gravel, little Boulders Larger than 12' ii m : to no fines Cobbles 3'to 12' c Gravel 3'to No. 4 (4.75 mm) 0 0 m ,' '' '' '• Poorly -graded sand Coarse Gravel 3'to 3/4' rn U _• SP and sand with gravel, Fine Gravel 3/4'to No. 4 (4.75 mm) d c c v m c little to no fines Sand No. 4 (4.75 mm) to No. 200 (0.075 mm) 0 z Coarse Sand No. 4 (4.75 mm) to No. 10 (2.00 mm) y Silty sand and Medium Sand No. 10 (2.00 mm) to No. 40 (0.425 mm) SM silty Sand with Fine Sand No. 40 (0.425 mm) to No. 200 (0.075 mm) U c a - gravel Sift and Clay Smaller than No. 200 0.075 mm � (3) Estimated Percentage Moisture Content y N Clayey sand and Ni 'SC clayey sand with ravel Y Y g Component Percentage by Weight Dry - Absence of moisture, co dusty, dry to the touch Trace <5 Slightly Moist - Perceptible Sift, sandy sift, gravelly sift, moisture a� ML sift with sand or gravel Some 5 to <12 � Moist -Damp but no visible N c Modifier 12 to <30 water N U, (silty, sandy, gravely) Very Moist - Water visible but Clay of low to medium c CL plasticity; silty, sandy, or not free draining z y -= E gravelly clay, lean clay Very modifier 30 to <50 Wet -Visible free water, usual y y � J (silty, sandy, gravely) from below water table a — Organic clay or sift of low Symbols m My= OL plasticity Blows/6' or — — — — Sampler portion of 6' VIC Cement grout ° Type f surface seal a Sampler Type Elastic sift, clayey sift, sift o N MH with micaceous or 2.0.OD ,5 Description Bentonite Split -Spoon (4) seal CD u� diatomaceous fine sand or Slft 20 Sampler 3.0' OD Split -Spoon Sampler :: Filter pack with o o (SPA 3.25' OD Splft-Spoon Ring Sampler (4) = := blank casing Clay of high plasticity, rn d L) o c w CH sandy or gravelly clay, fat section Bulk sample 3.0' OD Thin -Wall Tube Sampler = Screened casing m 10 E clay with sand or ravel Y 9 .' or Hydrotip (including Shelby tube) with filter pack Grab Sample �s L. •• End cap c _Q rrr rr fr,f Organic clay or sift of 9 Y � Portion not recovered rirrfr OH medium to high (t) Percentage b d weight (4) 9 Y dry 9 Depth of ground water plasticity (2) (SPT) Standard Penetration Test T ATD = At time of drilling (s) (ASTM D-1586) Static water level (date) In General Accordance with Peat, muck and other o, c y PT highly organic soils Standard Practice for Description (S) Combined USCS symbols used for _0 and Identification of Soils (ASTM D-2488) fines between 5% and 120% o Classifications of soils in this report are based on visual field and/or laboratory observations, which include density/consistency, moisture condition, grain size, and g plasticity estimates and should not be construed to imply field or laboratory testing unless presented herein. Visual -manual and/or laboratory classification c methods of ASTM D-2487 and D-2488 were used as an identification guide for the Unified Soil Classification System. a s s o c i a t e d earth s c i e n c e s EXPLORATION LOG KEY FIGURE Al i n c o r p o r a t e d a s s o c i. t. d 1 Geologic & Monitorin V I Construction Log earth sciences Project Number We11 umber Sheet n c o r p o r a l e d 180212H001 EB-12W 1 of 2 Project Name Lake Groye Elementary School Location Federal 18bi - WA Elevation (Top of Well Casing) -352 Surface Elevation (ft) Water Level Elevation Date Start/Finish 2118119.9118119 Drilling/Equipment Holocene 8140 C RoLQ5pnicHole Diameter (in) 10 Hammer Weight/Drop w N >CL fp V O L Q WELL CONSTRUCTION O� T �>. 0`o DESCRIPTION Stick up monument with 0 4: Grass / Topsoil J-plug well cap A Moist to very moist, moderately oxidized dark brown, gravelly, fine SAND, some silt; abundant roots, rootlets, and fine organics (SM-GM). S1 _ Vashon Lodgment Tlil / VashoWAdvance Outwash Transitional Moist, moderately oxidized orangish brown, fine to medium SAND, Concrete 0 to 7.3 feet some silt to silty, some gravel; occasional rootlets (SM). Grinding drill action. Moist, light brown, gravelly, fine to medium SAND, trace silt ranging = to silty in bottom 8 inches; unsorted (SP-SM). 5 Very moist, slightly oxidized rayish light brown, gravelly, fine SAND, some sift to silty; massive (S. s-2 Moist, slightly oxidized grayish light brown, gravelly, fine to medium SAND, trace silt; occasional cobbles; massive (SP). Driller notes rock encountered. �.. Moist, g sh light brown, gravelly, fine SAND, some silt to silty; aoeasiona! cobbles; sample is cooked_unsorted�SM. -10 Slightly moist, slightly oxidized grayish light broom, gravelly, fine to Bentonite 7.3 to 18 feet medium SAND, trace to some silt, trace coarse sand (SP-SM). S-3 Moist, sli htlyy oxidized grayish light brown, very sandy, GRAVEL, . c trace siVGP). -15 6-inch I.D. PVC casing -2.8 Moist to very moist, slightly oxidized light brown, silty, fine to medium SAND, some gravel (SM). to 22 feet l Moist to very moist, grayish light brown, sandy, SILT, some gravel; - unsorted (ML . �eei.- - ^ - - - - �iWcull nliing aT i7 Moist, slightly oxidized light brown, fine to medium SAND, some gravel, trace to some silt (SP-SM). - 20 #12/20 Silica sand 18 to 50.5 Very moist to wet, Iigght brown with moderate oxidation bands, mostly 'interbeds feet fine to medium SANID, some silt; (1 to 2 inches thick) of silty, fine sand, ranging to fine to medium sand, some silt; slightly nIII stratified layers (<0.5 inches thick) (SP-SM}. a = Wet, 0ght brawn, sandy, GRAVEL, trace slit,' Interstices of silty, s5 I. 0" ' medium to coarse sandy (GP -GM). Perched zone of water. • As above. o Wet, light brown, sandy. GRAVEL, trace to some silk, contains scattered red gravel; occasional moderately to heavily oxidized grave[; rounded cobbles (GP -GM). - 25 Very moist to wet, light brown gravelly, silty, fine to medium SAND; occasional heavily oxidized silt layers; slightly shall ed to unsorted (SM). S-s .�.� Very moist to wet, light brown, sandy, silty, GRAVEL; unsorted; ■ • interstices of silty, medium to coarse sand (GM). ■ ' ■ Very moist, grayish light brown, silty, sandy, GRAVEL; unsorted; interstices of silty, mostly medium to coarse sand (GM). Sampler Type (ST): m 2" OD Split Spoon Sampler (SPT) Q No Recovery M - Moisture Logged by: CRC m 3" OD Split Spoon Sampler (D & M) Ring Sample -7 Water Level () Approved by: JHS ® Grab Sample'. ® Shelby Tube Sample 1 Water Level at time of drilling (ATD) Geologic & Monitoring l 11 Construction Log Project Number We umber Sheet 180212H001 EB-12W 1 2 of 2 Project Name Lake Grove Elementary School Location Federal Wa , WA Elevation (Top of Well Casing) —352 Surface Elevation (ft) -349 (NGV 29) Water Level Elevation Date Start/Finish 2/1 R/14 9/1 R/14 Drilling/Equipment HQIocene 18140LC Rotosonic Drill Hole Diameter (in) 10 Hammer Weight/Drop N/A sip -J y a� E d.. c� B 3 WELL CONSTRUCTION T DESCRIPTION • As above; wet (GM). Vashon Advance Outwash S-7 Moist to very moist, light brown, gravelly, fine to medium SAND, some silt; massive (SP-SM). - 35 6-inch I.D. PVC well screen J. As alcove: very moist, some silt, medium to coarse SAND at 0.010-inch slot width 22 to transition, some silt; bed (1 inch thick) of slightly oxidized gray, fine 50.5 feet o . 1 sand (SP-SM). n Very moist to wet, light brown, sandy, GRAVEL, some silt; unsorted gg (GP -GM). .01 Interstices becomes moist; sample is slightly baked (GP -GM). = Moist to very moist, light brown, sandy, GRAVEL, trace to some silt; massive (SP-SM). - 40 0 • oV • Very moist, gra 'sh light brown, GRAVEL, some sand, trace silt; beds (1 to 2 inches thick) of trace sand and silt; interstices of a medium to coarse sand, some silt to silty (GP -GM). S-9 Moist, grayish light brown, fine to medium SAND, some gravel, trace to some silt, trace coarse sand; sample is slightly cooked (SP-SM). Moist, grayish light brown, gravelly, medium to coarse SAND, trace - 45 = fine sand, some silt; interstices of medium to coarse sand (SP-SM). = Very moist to wet, grayish light brown, fine to medium SAND, some gravel, trace silt; occasional mica; massive with depth (SP). S 10 Moist to very moist, grayish light brown, mostly fine to medium SAND, trace silt; occasional mica; massive (SP). - 50 Threaded Cap Boring terminated at 50.5 feet Well completed at 50.5 feet on 2/18/19. Perched groundwater encountered at 22 feet. Well tag # BLI 078 Boring continuously sampled. - 55 Sampler Type (ST): m 2" OD Split Spoon Sampler (SPT) Q No Recovery M - Moisture Logged by: CRC 3" OD Split Spoon Sampler (D & M) Ring Sample Q Water Level () Approved by: JHS ® Grab Sample Shelby Tube Sample 1 Water Level at time of drilling (ATD) ntec . us .J iB C M I i[G I If FF MEMORANDUM TO: EJ Walsh, P.E. Director of Public Works 33325 80, Avenue South Federal Way, WA 98003 FROM: Sam Schafer, AIA Integrus Architecture DATE: April 26, 2019 RESUBMITTED APR 3 0 2019 Gr7Y OF FEDERAL WAY CGMMUNfTY DEVELOPMEN7 117 S. Main St., Suite 100 Seattle, WA 96104 SUBJECT: Pedestrian Site Access and Safe Routes to School 206.628.3137 1 office 206.628.3138 1 fax Lake Grove Elementary School Integrus Project No. 21738 As part of Federal Way Public School's safe soutes to school plan and pedestrian site access to Lake Grove Elementary, pedestrian gates have been located at the south portion of the site to maintain connection the surrounding neighborhood and cul-de-sac at 2nd PI SW and SW 310", PI. A pedestrian gate is located at the north portion of the site to allow for pedestrian access onto the playfields from SW 3080, St. An accessible ramp from the play fields to the school has been provided. Routing: City of Federal Way ! n Lec a -us rung April 29, 2019 Natalie Kamieniecki City of Federal Way 33325 8th Avenue South Federal Way, WA 98003 RESUBMITTED APR 3 0 2018 G!N OF FES)E AL WAv COMMUNIV D IfinLOPMF.NT RE: File #19-100178-00-UP; TECHNICAL REVIEW LETTER Lake Grove Elementary School, 303 SW 3081h Street, Federal Way Integrus Project No. 21738.00 117 S. Main St., Suite 100 Seattle, WA 98104 Dear Ms. Kamieniecki: 206.628.3137 office 206.628.3138 fax Below are written responses to your technical review letter dated March 14, 2019. A complete plan set with clouds identifying all revisions has been submitted with the written responses. Natalie Kamieniecki - Planning Division 1. Not all reports or documents referenced in the SEPA checklist were provided to the city. Please provide the following reports for the city's files: Subsurface Investigation Report; and PBS Engineering and Environmental, Inc., (9/21) and Soils Analysis to detect the presence of historic arsenic and/ or lead contamination. Response: The following documents from PBS Engineering and Environmental, Inc. are included in the resubmittal: 09/24/2018 — Subsurface Investigation Report 10/17/2018 — Arsenic and I or Lead Contamination Report 2. The geotechnical engineering report is preliminary and does not reflect the final site design. The report must contain an analysis specific to the proposed construction and site design. The report cannot be in draft format and must be signed by the geotechnical engineer. Response The following documents from Associated Earth Sciences, Inc. are included in the resubmittal: 02/20/2019 — Revised Geotechnical Report 04/25/2019 — Geotechnical Comment Response Letter 3. The subject property is within the five-year and 10-year wellhead capture zone, which is designated as a critical aquifer recharge area. Per Federal day City Code (FWRC)19.145.490, any proposed development located in critical aquifer recharge areas must submit a hazardous materials inventory statement. As the total landscaped avid lawn area exceeds 10,000 square feet, FWRC 19.185.070 requires a management plan for any pesticide and/or herbicides that will potentially be used for the long-term care of the development's landscaping. Please provide a hazardous materials inventory statement and an operations and management manual using best management practices (BMPs) and integrated pest management (IPM) for fertilizer and pesticide/herbicide applications. The BMPs shall include recommendations on the quantity, timing, and type of fertilizers applied to lawns and gardens to protect groundwater quality. i-ntec us �/ A9 I yRf Ms. Natalie Kamieniecki Page 2 April 29, 2019 Response: The following documents are included in the resubmittal: Hazardous Materials Inventory Statement Operations and Management Manual (BMPs) Integrated Pest Management (IPM) 4. Pursuant to FWRC 19.125.160, no improvement or structure may be in a required yard except as follows: "(5) Fences and railings not over six feet in height may be located in required yards." Please demarcate clearly where proposed new fencing is located. The fence height must six feet in height, or relocated outside the required yard setbacks, as applicable. In addition, FWRC 19.115.090(1)(0 requires such fencing to contain vinyl -coated mesh, powder --coated poles, dark color(s), and architectural element(s) such as pole caps and/or a decorative grid pattern. Provide the fence details of how this requirement is met. Response: As part of the Federal Way Public Schools Educational Specifications and safe school plan, a 10' high fence is proposed around the perimeter of the outdoor play area to accommodate the unique safety challenges around schools and create a safe and supervisable site for scholars. The height of the fence complies with requirements of the Office of Superintendent of Public Instruction (OSPI) per FWRC 19.200.090 and the requirements of RCW 28A.320.125 — Safe School Plans. The fence is located behind the type III perimeter landscaping buffer in the 50' setback to maximize open space and activity opportunities for scholars and community members using the site after school hours while maintaining a safe and secure facility. All proposed fences have been relocated outside of the required yard setback as shown on L100 and L200. All proposed chain link fencing and material meets the conditions as required by FWRC 19.115.090(1)(f). Fence and gate details are shown on sheet L403. 5. Sheet L200 lists incorrect parking lot landscape calculations. Per FWRC 19.125.070(2), Type IV landscaping is required in the amount of 22 square feet per part <ing stall when 50 or more parking stalls are provided. A total of 60 parking stalls are provided. Please revise the calculations for required parking lot landscaping. Response: Parking lot calculations have been updated to reflect the required 22 SF per parking stall as shown on L200. 6. Pedestrian connections from the two parking lots to the school building are needed. Per FWRC 19.115.050(4), all pedestrian pathways through asphalt parking areas require a variation in paved texture and color. Approved methods of delineation include stone, brick or granite pavers, exposed aggregate, or stamped and colored concrete. Please provide a material choice on resubmitted sheets. Response: Pedestrian connections from the parking lots will be concrete pavement with an exposed aggregate finish as shown on L100 and L200. 7. Please provide either a color rendition of the elevation drawings with a material list, or a color i me :Ius ' A.NCHI IrtV FVofF Ms. Natalie Kamieniecki Page 3 April 29, 2019 and materials board, with the resubmittal. Response: Refer to sheet G-006 for updated color and materials board and updated sheet A-201 for colored elevations. 8. The building design provides alternative methods to organize and shape the structural elements, instead of providing the significant structural modulation stated in FWRC 19.115.100(3). Staff will consider the alternative method to satisfy community design guidelines if all of the following architectural and accessory design elements listed in FWRC 19.115.060(3)(b) are provided along the west elevation: • Window openings with visible trim material, or painted detailing that resembles trim; • Artwork, such as mosaics, murals, decorative masonry, or metal patterns or grillwork, sculptures, relief, etc., over a substantial portion of the blank wall surface. (The Federal Way Arts Commission may be used as an advisory body at the discretion of the planning staff.); Architectural features, such as setbacks, indentations, overhangs, projections, articulated cornices, bays, reveals, canopies, and awnings; and Material variations, such as colors, brick or metal banding, or textural changes. Response: The west facade incorporates window openings that are articulated by sheet metal flashing trim material creating a shadow box that organizes groupings of windows along the facade, refer to sheet G-006 and A-201 for character and locations. Refer to sheet G-006 and A-201 for updated elevations identifying location for student provided artwork as a decorative glazed tile accent band and a custom perforated metal vertical trellis at the vertical siding area at the downspouts that is incorporated into the design of the exterior facades. Architectural features at the parapet incorporates height variation and emphasizes the material modulation of the facades. All facades incorporate material, color, and textural variations, refer to sheet G-006 for material and color descriptions. The building design is comprised principally of concrete masonry veneer base, cement board panel and plank siding, and window assemblies with an articulated parapet roof design. Kevin Peterson Public Works— Development Services Division SEPA Checklist Section 3. a.1) — The checklist indicates that the site is located near Steel Lake and Lake Dolloff, and within the Hylebos Creek Drainage basin. This is incorrect, as the site is in the Lower Puget Sound drainage basin, and near Mirror Lake. The checklist should be amended to correct this mistake. (Subsequent sections in the checklist do identify the correct drainage basin.) Response: SEPA is amended. See attached Memo updates. Plans and Technical Information Report (TIR) 1. There is insufficient documentation for us to determine if the water quality "Media filter Drain" systems provide the necessary level of Enhanced Basic Treatment. Additional documentation shall be provided in the TIR that shows these systems provide the level of treatment required. �ntec. . us JANCHITECTUNE Ms. Natalie Kamieniecki Page 4 April 29, 2019 Response: Support documentation has been provided in Appendix B demonstrating that proposed media filter drains have DOE General Use Level Designation (GULD) for enhanced treatment. Additionally, sizing calculations for the media filter drains have been included in Appendix B. 2. Provide cross -sections of the water quality systems on the plans. Response: Cross -Sections of media filter drains and filterra systems have been provided on the details sheets C-211 and C-504. 3. Use of underground detention facilities outside of the City Center requires approval from the Public Works Department. Response: See attached design deviation approval request letter. 4. The TIR needs to be revised to include a sufficient analysis that shows the detention system(s) has been sized appropriately for the Flood Problem flow Control criteria. Response: TIR was revised to include analysis that shows detention was sized appropriately for the Flood Problem Flow Control criteria 5. If the underground detention chambers are approved, it appears that large portions of them are, or will be, located in "fill" soils, per the geotechnical report. Additional documentation shall be provided, through further geotechnical evaluation and the manufacturer's recommendations, that shows this type of system is compatible in fill —type soils. Response: Refer to attached Geotechnical comment response letter dated 4/25/2019 6. If it is determined (through the analysis listed above) that the chamber system can be utilized, then additional information needs to be provided on the plans (in plain view) as to how the chambers are interconnected. Response: Drawings from manufacturer (ADS) have been requested. Details sheets show how chambers are interconnected. 7. The plans show very little stormwater collection and conveyance systems within the new parking lots and other paved areas. It is also unclear how stormwater runoff will be collected and conveyed to the water quality treatment systems. Additional details are required that show how the runoff will be collected and conveyed into these systems. Response: Additional details have been added on drainage plans to show how runoff will be collected and conveyed into water quality systems. Also, more detailed information is provided in the water quality section of the TIR. 8. The street improvements shown do not meet city standards; however, the applicant has submitted a request for modification. The city will respond to that request under a separate cover. inter. . us �AR IlIHf Ms. Natalie Kamieniecki Page 5 April 29, 2019 Response: Street improvements for S 308th Street are now standard street Section S. 9. Access to the Solid Waste and Recycling (SWR) enclosure is through what appears to be a gate that will be controlled by school district personnel. The owner needs to show or describe how waste and recycling personnel and vehicles will access the SWR enclosure. Response: Federal Way Public Schools will have the custodian(s) unlock the gate(s) on the mornings of scheduled pickup for solid waste and recycling. See attached memo from FWPS. 10. The SWR enclosure shall be provided with a drain in the floor that is connected to the sanitary sewer system. This needs to be shown on the plans. Response: Drain added to SWR enclosure and connected to Sanitary sewer system. 11. Each civil sheet shall have the following note in bold: NO TEMPORARY CERTIFICATE OF OCCUPANCY (TCO) OR CERTIFICATE OF OCCUPANCY (CO) SHALL BE ISSUED UNTIL ALL STORMWATER AND FRONTAGE IMPROVEMENTS ARE INSTALLED, INSPECTED AND APPROVED BY THE CITY OF FEDERAL WAY. Response: Note has been added on all sheets. Sarady Long, Public Works - Traffic General 1. The information in the SEPA document, the traffic report (TIA), and the submitted plan set should be consistent. For example, the TIA does not address square footage of portables for the existing school, but that is included in the SEPA. The square footage of new construction is different in the SEPA and the TIA. The plan set does not provide the documentation of square footage. Response: See attached Memo that states the corrected square footage. 2. The plan set should depict improvements identified in the SEPA document and the TIA. Response: TIA and SEPA updated to match Civil Plans and Documents Plans 1. The civil plans must depict the correct frontage improvement (Type S) on South 308' Street. All improvements shall be within the specified right-of-way. Please note, the submitted Right - of -Way, Street Improvement Modification/Waiver has not been issue by the Public Works Director. Response: Frontage improvements for S 308th Street are standard street section S. 2. Curb ramps at marked crossings must be wholly contained within the crosswalk. Please move ■ „te JAR�TECTURE Ms. Natalie Kamieniecki Page 6 April 29, 2019 the crosswalks in appropriate locations. Response: At Bus entry, crosswalk was moved south of bus entry and concrete landing added at north end of crosswalk. At Parent entry, crosswalk was moved north of parent entry and concrete landing added at north end of crosswalk. 3. Provide school bus turning diagrams at the driveways and the intersections South 308'h Street and 3rd Avenue SQL to ensure the school bus can enter, maneuver, and leave the site without encroaching onto opposing traffic lanes or mounting a curb. Response: The school bus turning diagram has been provided. 4. The on -site parent drop-off and pick up storage must be designed to accommodate the 95th percentile queues length. Please ensure that queues will not back up onto South 308th Street during the AM and PM peak hours. Response: Parent drop-off and pick up storage is design to accommodate the 95th percentile queue length. See attached revised TIA. 5. The Public Works Traffic Division cannot support the proposed parking restriction on South 3081" Street. The school is located in a high density residential neighborhood with planned road incorporate on -street parking. The city would consider parking restrictions due to safety issues, such as sight distance, with supporting documentation. This would be part of street modification request. Response: Frontage improvements on S 308th Street have been designed per S Section standard. No parking restrictions apply. 6. Please show a non --motorized accessible pedestrian path along the east side of the property and entry gate to connect Lakota Crest residential neighborhood students Response: Current design of pedestrian gate connecting neighborhood the south and north and the ramp from the fields to the school is acceptable as agreed to by the City. See attached memo for pedestrian access and safe routes to school 7. The city recommends that a city standard driveway approach with a 40 foot throat width be used. Per FWRC 19.135.270(3), driveway width may be increased in order to provide adequate width for vehicles that may be reasonably expected to use the driveway, as determined by the Public Works Director. Please provide bus turning diagram and street modification request supporting a wider driveway. Response: City standard DW approach added with a 30' throat width TIA Review 1. The TIA shows the east driveway (A5) access in a different location than the plan set. Third Avenue SW is aligned with the bus drop offlpick up driveway in the plan set, which is different in the TIA. Please submit the analysis modifying the driveway location according to plan set. ntec us .Janrrvne Ms. Natalie Kamieniecki Page 7 April 29, 2019 Response: See attached revised TIA. 2. Please correct EB delay (10.9) at intersection #6, SW 305"h Street 11 11 Avenue South in Table 2, page-8. Response: See attached revised TIA. 3. Please correct the total AM Peak Hour trip generation according to ITE 10"h edition to 101 trips between 7AM to 9AM. Response: See attached revised TIA. 4. The 95"h percentile queue length for 15 minute period is not realistic because we are using average peak hour factor and peak hour volume. Please use the actual highest 15 minute peak to calculate the peak hour factor and volume. Response: See attached revised TIA. 5. Please clarify why the 15 minute peak queue is divided between the bus entrance and the patent drop— off/pick--up driveway. Please provide documentation from data collected driveway and how many buses were within the 11 car queue. Response: See attached revised TIA. SEPA CHECKLIST— TRANSPORTATION 1. The TIA identified mitigation measures to reduce the project impacts. These mitigation measures should be included in the SEPA document as proposed measures to reduce or control transportation impacts. Response: See attached Memo that identifies mitigate measures to reduce project impacts. 2. Verify the specified parking in section 14(d) is consistent with the total provided on the plan set. Response: See attached memo that states updated parking count. Brian Asbury, Lakehaven Water & Sewer district Water • Lakehaven issued a Water Certificate of Availability for the proposed project/property on February 5, 2019; the certificate is valid for one-year from the date of issuance. • Hydraulic model results (FF #344a) for the proposed onsite water distribution system indicate that Lakehaven's standard maximum allowable system liquid velocity of 10 ftls, at no less than 20 psi, will be exceeded at a fire flow rate above 1,400 GPM. This flow figure depicts the calculated performance of the existing water distribution system under high demand conditions. A AC H I T E C T U RE Ms. Natalie Kamieniecki Page 8 April 29, 2019 ■ A Developer Extension (DE) Agreement was executed between Lakehaven and Federal Way Public Schools on January 9 2019, to manage construction of the proposed onsite water distribution system. However, no water system plans have yet been submitted to Lakehaven to commence the initial DE plan review processes. New onsite water main would connect to the existing water mains in SW 308'h Street. Response: See attached Developer (DE) Agreement and Certificate of Water Availability for Lake Grove. Water system design has been submitted to Lakehaven Water and Sewer District. Sewer Lakehaven issued a Sewer Certificate of Availability for the proposed project/property on February 5, 2019; the certificate is valid for one-year from the date of issuance. The applicant has proposed a new sewer service connection to an existing onsite grinder pump force main. ■ The applicant has proposed a new sewer service connection to an existing onsite grinder pump force main. Response: See attached Certificate of Sewer Availability for Lake Grove. Sewer system design has been submitted to Lakehaven Water and Sewer District. Please feel free to contact me if you have any questions or further clarifications. Sincerely, 141f "*" Sam Schafer, AIA Project Manager INTEGRUS ARCHITECTURE, P.S. Documents: Resubmlttal Drawings Revised TIA Revised TR Subsurface Investigation Report Revised Geotech Report Arsenic and / or Lead Contamination Report Hazardous materials inventory statement, BMPs, and IPM Updated SEPA memos Underground detention facility outside City Center approval letter PC: Natalie Kamieniecki, City of Federal Way, Associate Planner Ray Vefik, Federal Way Public Schools 1 to gruTs 10Al MEMORANDUM TO: EJ Walsh, P.E. Director of Public Works 33325 8", Avenue South Federal Way, WA 98003 FROM: Sam Schafer, AIA Integrus Architecture DATE: April 26, 2019 RESUBMITTED APR 3 9 2919 CITY OF FEDERAL WAY COMMUNTY DEVELOPMENT 117 S. Main St., Suite 100 Seattle, WA 98104 SUBJECT: Pedestrian Site Access and Safe Routes to School 206.628.3137 office 206.628.3138 fax Lake Grove Elementary School Integrus Project No. 21738 As part of Federal Way Public School's safe soutes to school plan and pedestrian site access to Lake Grove Elementary, pedestrian gates have been located at the south portion of the site to maintain connection the surrounding neighborhood and cul-de-sac at 2nd PI SW and SW 310d' Pl. A pedestrian gate is located at the north portion of the site to allow for pedestrian access onto the playfields from SW 308th St. An accessible ramp from the play fields to the school has been provided. Routing: City of Federal Way a s s o c i a t e d earth sciences i n c o r p o r a t e d April 25, 2019 Project No. 180212E001 Federal Way Public Schools 1211 South 332"d Street Federal Way, Washington 98003 Attention: Mr. Ray Vefik Subject: Comment Response Lake Grove Elementary School Replacement Federal Way, Washington Dear Mr. Vefik: RESUBMITTED APR 3 0 2019 CrrY AY GOMMUNNITY FEDERAL EVELOPMENT The purpose of this letter is to respond to a King County request for geotechnical comment regarding the underground Stormtech chambers at Lake Grove Elementary School. Associated Earth Sciences, Inc. (AESI) was provided with the following King County comment from the design team. 5. If underground detention chambers are approved, it appears that large portions of them are, or will be located in 'fill" soils, per the geotechnical report. Additional documentation shall be provided, through further geotechnical evaluation and the manufacturer's recommendations, that shows this type of system is compatible infill-type soils. We reviewed a grading and drainage plan set for Lake Grove Elementary School dated March 28, 2019, for preparation of this letter. The plan set shows several rows of underground Stormtech chambers located north of the proposed school building in the north -central portion of the site. We were also provided with a bottom of foundation stone elevation of approximately 338.50 feet and a top of chamber elevation of approximately 343 feet for the Stormtech system. Explorations completed by AESI at the project site include 12 exploration borings (EB-1 through E13-12W). Borings E13-1 through EB-11 are discussed in detail in our report titled "Subsurface Exploration, Geologic Hazard, and Preliminary Geotechnical Report," dated June 14, 2018, and revised February 20, 2019. EB-12W was completed as a borehole infiltration test well on February 18, 2019, as part of a hydrogeologic study and was not included in our above - Kirkland Office 1911 Fifth Avenue I Kirkland, WA 98033 P 1425.827.7701 Mount Vernon Office 1 508 S. Second Street, Suite 1011 Mount Vernon, WA 98273 P 1425.827.7701 Tacoma Office 11552 Commerce Street, Suite 102 1 Tacoma, WA 98402 P 1253.722.2992 www.aesgeo.com referenced report. Therefore, we have attached with this letter a "Site and Exploration Plan," showing the locations of the explorations completed at the site, including EB-12W, and the exploration log for EB-12W. Explorations, EB-4, EB-7, and EB-12W were completed in the vicinity of the proposed detention chambers. These explorations encountered native sediments or existing fill near the surface that extended to depths ranging from 2.5 to 4 feet below the surface. These depths approximately correlate to an elevation range of 346 feet to 349.5 feet. Based on the chamber elevation provided to us, we anticipate that the rocked section of the Stormtech chambers will be fully embedded into native sediments which are suitable for bearing. We anticipate that the native sediments will consist of silty sands with marginal infiltration potential. Therefore, we recommend that a detention system not intended to infiltrate, is lined with an impermeable liner with a minimum thickness of 30 mils. We hope this information meets your present requirements. Please contact the undersigned at (425) 827-7701 should you have any questions. Sincerely, ASSOCIATED EARTH SCIENCES, INC. Kirkland, Washington Kurt D. Merriman, P.E. Senior Principal Engineer Attachments: Site and Exploration Plan Exploration Log EB-12W KDM/ms 180212E001-7 Projects\20180212\KE\WP /j • 180212 Lake Gm ES 1180212E001 F2 S-E-P 2-19. 4, og s imo 0 0 z ► O ►m o m onl7 m m W m m m T m o" A v C.���77 Z , m z Z < $z o m 0 N m D r m M -' N 0 b S m m o C o pO ;0 A1 � p D r = m p 'g A_ g n p zo 0 j m r O p o J p �R < rn z m O z O m o D D Z rn N cn ^ $ c czi czi N Z O rp y Zm p 0 Z c _ - � i g Nr In m m C Z = -0 IDOl in m3�11 z m O 0 Z $ m ° ° o U Well -graded gravel and Terms Describing Relative Density and Consistency LL m o 0 0 0 GW 9 ravel with sand, little to o�1 Densi SPT blows/foot C if o no fines Very Loose 0 to 4 Coarse- m > o U s, Loose 4 to 10 Grained Soils Medium Dense 10 to 30 Test Symbols 0 ° 0 ° ° 0 0 0 0° ° °� Poorly -graded gravel CO fn o N 00000 o 0 0 0 0° GP and gravel with sand, Dense 30 to 50 N :a c 000oa little to no fines Very Dense >50 G =Grain Size o c M = Moisture Content Consistency SPT(2tblawsifoot A = Atterber Limits 9 z° � c v �� Silty gravel and silty Very Soft 0 to 2 C=Chemical 0 £ c 8 ; 0 GM gravel with sand Fine- Soft 2 to 4 DD =Dry Density LL . e Grained Soils Medium Stiff 4 to 8 K = Permeability Stiff 8 to 15 Clayey gravel and Very Stiff 15 to 30 c GC clayey gravel with sand Hard >30 CD 'm Component Definitions o Well -graded sand and t Descriptive Term Size Range and Sieve Number SW sand with gravel, little Boulders Larger than 12' ti to no fines Cobbles W to 12' y N 1 g — ..' Gravel 3'to No. 4 (4.75 mm) a� > �+- A • Poorly -graded sand Coarse Gravel 3'to 3/4 CO ci D _' Sp and sand with gravel, Fine Gravel 3/4'to No. 4 (4.75 mm) a little to no fines Sand No. 4 (4.75 mm) to No. 200 (0.075 mm) O 0 z° Coarse Sand No. 4 (4.75 mm) to No. 10 (2.00 mm) d Silty sand and Medium Sand No. 10 (2.00 mm) to No. 40 (0.425 mm) m° SM silty sand with Fine Sand No. 40 (0.425 mm) to No. 200 (0.075 mm) v c a -; .:- . gravel Sift and Clay Smaller than No. 200 (0.075 mm) u� u- . N _ SC Clayey sand and (3) Estimated Percentage Moisture Content ^" clayey sand with gravel Component Percentage by WeightDry - Absence of moisture, dusty, dry to the touch Trace <5 Slightly Moist - Perceptible Silt, sand silt, ravel sift, y gravelly moisture a� In MIL sift with sand or gravel Some 5 to <12 � Moist -Damp but no visible U) � Modifier 12 to <30 water Clay of low to medium CD (si ty,sand y, gravely) Very Moist - Water visible but N c CL plasticity; silty, sandy, or not free draining z = gravelly clay, lean clay Very modifier 30 to <50 Wet -Visible free water, usual y 42 E (sifty, sandy, gravely) from below water table U ti J= Organic clay or sift of low Symbols d = — OL plasticity Blows/6' or 0 _— Sampler portion of 6' Cement grout `o =I Type ` surface seal Elastic sift, clayey sift, sift \ Sampler Type 2.0.OD o o u� MH with micaceous or diatomaceous fine sand or ,O 5 Description Split -Spoon 2D (4) Sampler 3.0' OD Split -Spoon Sampler Bentonite seal y sift Filter pack with w `—° ° (SPT) 3.25' OD Split -Spoon Ring Sampler tot blank casing Clay of high lactic y g plasticity, r°n U o CH Sandy or gravelly Clay, fat Bulk sample 3.0' OD Thin -Wall Tube Sampler section Screened casing • � © clay with sand or gravel (including Shelby tube) =; or f der i pack 0 — � v7 Grab Sample LM End cap %�i%�i ° _' Q ffrr Organic clay or sift of 0 Portion not recovered J OH medium to high (il Percentage by dry weight (4) Depth of ground water plasticity (2) (SPT) Standard Penetration Test (ASTM D-1586) 1 ATD = At time of drilling (3) In General Accordance with Static water level (date) Peat, muck and other c m e 0 PT highly organic soils Standard Practice for Description (5) Combined USCS symbols used for O and Identification of Soils (ASTM D-2488) fines between 5% and 120/. o Classifications of soils in this report are based on visual field and/or laboratory observations, which include denstty/consistency, moisture condition, grain size, and g plasticity estimates and should not be construed to imply field or laboratory testing unless presented herein. Visual -manual and/or laboratory classification t methods of ASTM D-2487 and D-2488 were used as an identification guide for the Unified Soil Classification System. a s s o c i a t e d earth sciences i n c o r p o r a t e d EXPLORATION LOG KEY FIGURE Al a s s o c i a t e d Geologic & MonitoringWell Construction Lou e a r t h s c i e n c e s Project Number Well Number Sheet in corporaled 180212H001 EB-12W 1of2 Project Name Lake Grgme EllementalEy SchoQ1 Location Federal Vjjy. WA Elevation (Top of Well Casing) —352 Surface Elevation (ft) -- Water Level Elevation Date Start/Finish 911 R/1 A 911 AM Q Drilling/Equipment Holocene ! 8140LC Rotas_ orlic Drill Hole Diameter (in) 10 Hammer Weight/Drop NIA L a > J N U O O_E WELL CONSTRUCTION T 12 DESCRIPTION Stick up monument with , .: Grass / Topsoil J-plug well cap Moist to very moist, moderately oxidized dark brown, gravelly, fine :.: SAND, some silt; abundant roots, rootlets, and fine organics _ (SM-GM). S-1 Vashon Lodgment Till / Vashon Advance Outwash Transitional Moist, moderately oxidized orangish brown, fine to medium SAND, Concrete 0 to 7.3 feet some silt to silty, some gravel; occasional rootlets (SM). Grinding drill action. Moist, light brown, gravelly, fine to medium SAND, trace silt ranging to silty in bottom 6 Inches; unsorted (SP-SM). 5 Very moist, slightly oxidized ggrayish light brown, gravelly, fine SAND, some sit to silty; massive (SM). S-2 Moist, slightly oxidized grayish light brown, gravelly, fine to medium SAND, trace silt; occasional cobbles; massive (SP). Driller notes rock encountered. Moist, grayish light brown, gravelly, fine SAND, some silt to silty; _ occasional cobbles; sample Is cooked; unsorted {SMI. -10 — — — — -- Slightly moist, slightly oxidized grayish light broom, gravelly, fine to Bentonite 7.3 to 18 feet medium SAND, trace to some silt, trace coarse sand (SP-SM). S-3 ' =d a Moist, sli ht!y oxidized grayish light brown, very sandy, GRAVEL, trace siltGP]. -15 6-inch I.D. PVC casing -2.8 Moist to very moist, slightly oxidized light brown, silty, fine to medium to 22 feet SAND, some gravel (SM). Moist to very moist, grayish light brown, sandy, SILT, some gravel; unsorted MlL%— — — — — — _ _ -- .- 3iflcuinAf __ _ i Moist, slightly oxidized light brown, fine to medium SAND, some gravel, trace to some silt (SP-SM). - 20 #12/20 Silica sand 18 to 50.5 Very moist to wet, light brown with moderate oxidation bands, mostly feet r fine to medium SAND, some silt; Werbeds (1 to 2 Inches thick) of silty, fine sand, ranging to fine to medium sand, some silt; slightly o . stratified layers (a0.5 inches thick) Sp-SM). irace = Wet, light brown, sandy, GRAVEL, silt interstices of silty, s5 _ r medium to coarse sandy (GP -GM). Perched zone of water. ° • As above. o Wet, light brown, sandy, GRAVEL, trace to some silt; contains • scattered red gravel.; occasional moderately to heavily oxidized gravel; rounded cobbles (GP -GM). - 25 Very moist to wet, light brown gravelly, silty, fine to medium SAND; layers; to unsorted occasional Heavily oxidized silt slightly stratified (SM). .r.r Very moist to wet, light brown, sandy, silty, GRAVEL; unsorted; ■ interstices of silty, medium to coarse sand (GM). r ■ . Very moist, grayish light brown, silty, sandy, GRAVEL; unsorted; interstices of silty, mostly medium to coarse sand (GM). Sampler Type (ST): m 2" OD Split Spoon Sampler (SPT) Q No Recovery M - Moisture Logged by: CRC m 3" OD Split Spoon Sampler (D & M) Ring Sample Q Water Level Q Approved by: JHS ® Grab Sample Shelby Tube Sample 1 Water Level at time of drilling (ATD) Geologic & Monitoring Well Construction Log Project Number Well umber Sheet 180212H001 EB-12W 1 2 of 2 Project Name Lake Grove Elementary School Location Federal Way, WA Elevation (Top of Well Casing) -352 Surface Elevation (ft) �-349 (NGII Water Level Elevation Date Start/Finish 711 AM Q-9/1$11 g Drilling/Equipment Holgone / 8140LC Rotosonic Drill Hole Diameter (in) 10 Hammer Weight/Drop NIA L G > J W V O a� E 3 WELL CONSTRUCTION T 00 `o DESCRIPTION As above; wet (GM). Vashon Advance Outwash S-7 Moist to very moist, light brown, gravelly, fine to medium SAND, some silt; massive (SP-SM). - 35 6-inch I.D. PVC well screen As above; very moist, some silt, medium to coarse SAND at 0.010-inch slot width 22 to transition, some silt; bed (1 inch thick) of slightly o)adized gray, fine 50.5 feet o . sand (SP-SM). ookVery moist to wet, light brown, sandy, GRAVEL, some silt; unsorted S-8 ' (I (GP -GM). a • ch Interstices becomes moist; sample is slightly baked (GP -GM). Moist to very moist, light brown, sandy, GRAVEL, trace to some silt; massive (SP-SM). - 40 o ' • Very moist, grayish light brown. GRAVEL, some sand, trace silt; beds (1 to 2 inches thick) of trace sand and silt: interstices of A medium to coarse sand, some silt to silty (GP -GM). S-9 Moist, grayish light brown, fine to medium SAND, some gravel, trace to some silt, trace coarse sand; sample is slightly cooked (SP M). = Moist, grayish light brown, gravelly, medium to coarse SAND, trace - 45 fine sand, some silt; interstices of medium to coarse sand (SP-SM). Very moist to wet, grayish light brown, fine to medium SAND, some gravel, trace silt; occasional mica; massive with depth (SP). StU Moist to very moist, grayish light brown, mostly fine to medium SAND, trace silt; occasional mica; massive (SP). - 50 Threaded Cap Boring terminated at 50.5 feet Well completed at 50.5 feet on 2/18/19. Perched groundwater encountered at 22 feet. Well tag # BLI 078 Boring continuously sampled. - 55 Sampler Type (ST): 0 2" OD Split Spoon Sampler (SPT) a No Recovery M - Moisture logged by: CRC 3" OD Split Spoon Sampler (D & M) Ring Sample Q Water Level () Approved by: JHS Grab Sample ® Shelby Tube Sample Z Water Level at time of drilling (ATD) \I FEDERAL WAY Department of PUBLIC SCHOOLS Maintenance & Operations TO: City of Federal Way Community Development FROM: Mike Benzien, Executive Director of Maintenance a d Operations HISS[1PA,4 PROJECT: Lake Grove Elementary School 1 1 ['ED APR 302019 SUBJECT: FWPS Hazardous Materials Inventory Statemen�VoF.rFLE GaMMtJ,11 fi. DEV��.�p�RBh _DATE: April 25, 2019 This memorandum is regarding the Federal Way Public Schools capital bond projects Federal Way Revised Code (FWRC) 19.145.490 (FWRC 19.185.070). Specifically for Lake Grove Elementary School hazardous material inventory statement, an operations and management manual using best management practices (BMPs), and integrated pest management (IMP) for fertilizer and pesticide/herbicide applications. Federal Way Public Schools (FWPS) has attached their Washington State Department of Agriculture Pest Management record application log for Lake Grove. Our list of Pre -approved pesticides, these are the only pesticides approved to be used on District property. Fertilizer is not on this log due to the fact that we do not need to report it to the state. Here's the information on the fertilizer: Simplot Partners 20-0-5 X-Cote slow release, normally applied spring and fall 4.5 lbs. per 1000 square feet. Fertilizer is only applied to the Play / Sports Field. FWPS is a Star Certified School District. Our philosophy has always been to use chemicals very sparingly around our facilities. We have also always used the least toxic products that will do the job. We always follow our Integrated Pest Management (IPM) policy, this serves as the Districts pesticide use policy referred to in the law. Mike Benzien Federal Way Public Schools Each Scholar: A voice. A dream. A BRIGHT future. 1211 S. 332^d St, Federal Way, WA 98003 1 p.253.945.5930 I f.253.945.59591 www.fwps.org Administrative Policies and Procedures Series: 6000 — Administration and Management Support PEST AND PESTICIDE MANAGEMENT AND NOTIFICATION: 6895 - ATTACHMENT A Pre -approved Pesticides The following pesticides have been pre -approved for use by the Federal Way Public Schools. Only chemicals on this list are allowed for possession or use within the district. Any new chemical must be pre -approved by the IPM Coordinator prior to its purchase or use within the district. No chemicals will be purchased or otherwise brought onto a district site by anyone other than authorized Maintenance Department staff. Additional chemicals may be added to this list on an as -needed basis for specific uses throughout the year. These additions must have the approval of the IPM Coordinator. Chemical Intended Use Crossbow Used to control blackberry vines; Casoron Pre -emergent herbicide used to control weeds and grasses; Ranger Pro Non -selective herbicide used to control weeds and grasses; Ronstar Pre -emergent herbicide used to control weeds and grasses on gravel and sports tracks; Round-up/Max Pro Non -selective herbicide used to control weeds and grasses; Snapshot Pre -emergent herbicide used to control weeds and grasses on fence lines and warming tracks; Trimec Herbicide used to control weeds in grass areas; Wasp Freeze Insecticide used to kill wasps and bees. Adopted under Policy Governance — 8/28/12 Adopted or Previously Revised — 07/02 Federal Way Public Schools Page 1 of 1 From: Rick Leavitt To: Say Vefik Subject: Lake Grove Pest Info Date: Tuesday, April 23, 2019 1:14:28 PM Attachments: 6895 - Attachment A- U d t d Pre- roved Ppstidides.doc imaae001.ona Lake Grove Pest Lou -Ddf Hello Ray, I have attached our Washington State Department of Agriculture Pest Management record application log for Lake Grove Elementary School. Also, our list of Pre - approved pesticides, these are the only pesticides approved to be used on District property. Fertilizer is not on this log due to the fact that we do not need to report it to the state. Here's the info on the fertilizer: Simplot Partners 20-0-5 X-Cote slow release, normally applied spring and fall 4.5 lbs. per 1000 square feet. Fertilizer is only applied to the Play / sports field. We are a Star Certified School District. Our philosophy has always been to use chemicals very sparingly around our facilities. We have also always used the least toxic products that will do the job. We always follow our Integrated Pest Management (IPM) policy, this serves as the Districts pesticide use policy referred to in the law. Thank you Rick Rick Leavitt Maintenance and Operations Manager Facility Services Federal Way Public Schools (253) 945-5933 (office) (253) 266-2972 (cell) (253) 945-5959 (fax) Children are not expected to be aware of Hazards, FEDERAL WAY PUBLIC SCHOOLS Each Scldar. A voice. A &eam. A ORES14T future. THAT'S OUR JOB!!!!! ►i 3l z 0. 3 October 17, 2018 Ray Vefik Federal Way Public Schools Capital Projects 1211 S 232"d St Federal Way, WA 98004 Email: rvefik@fwps.org fwpscpl8@fwps.org APR 3 0 VAS �dCO� �PMEH7 RE: Lake Grove Elementary School — Arsenic and Lead Soil Sampling 303 SW 308t' Street, Federal Way, Washington PBS Project #41519.000 Federal Way Public Schools (FWPS) has contracted PBS Engineering and Environmental Inc. (PBS) to evaluate the potential for arsenic and lead contaminants in near surface soils at the site of Lake Grove Elementary School (LGES) prior to site redevelopment as part of the Lake Grove Elementary School Replacement Project. On October 2, 2018 PBS performed soil sampling activities to determine the levels of arsenic and lead in shallow soil at LGES in Federal Way, Washington (Figure 1). This report presents the findings of the sampling activities and provides recommendations for regulatory compliance as well as for the handling and management of impacted soils during future redevelopment. The scope of services was presented in the Proposal for Arsenic and Lead Soil Testing (WA28798) by PBS, dated August 2, 2018. BACKGROUND LGES is located within the widespread soil contamination plume of the former Asarco smelter operation. The Asarco Company operated a copper smelter in Tacoma from 1890 to 1985. Smelter operations emitted an airborne plume of particulates with arsenic, lead, and other heavy metals that were distributed over a wide region of the Puget Sound. As a result, these metals have been found in near surface soils at concentrations which may pose a threat to human health and/or the environment. The Washington State Department of Ecology (Ecology) recommends soil sampling at properties in areas with estimated arsenic levels above the state cleanup level of 20 ppm'. Ecology's "Everett and Tacoma Smelter Search" web page https://fortress.wa.gov/ecy/smeltersearch/ maps the LGES site within a zone of potential arsenic concentrations ranging from 20 milligram per kilogram (mg/kg) to 40 mg/kg. Thus, the 20mg/kg to 40 mg/kg range can be considered the "baseline" for arsenic concentrations in near surface soils expected on site. REGULATORY CRITERIA Ecology's Model Toxics Control Act (MTCA) has established cleanup levels for arsenic and lead for unrestricted land use that are protective of human health and the environment'. Results of soil sampling will be compared to the applicable MTCA standards. "Tacoma Smelter Plume Model Remedies Guidance: Sampling and cleanup of arsenic and lead contaminated soils", Washington State Department of Ecology, June 2012, Publication No. 12-09-086-A ' "Model Toxics Control Act Regulation and Statute', Washington State Department of Ecology, 2013 Revision, Publication No. 94-06 2517 EASTLAKE AVENUE EAST, SUITE 100, SEATTLE, WA 98102 • 206.233.9639 MAIN - 866.727.0140 FAX • PBSUSA.COM Federal Way Public Schools Lake Grove Elementary School Arsenic and Lead Sampling Report October 17, 2018 Page 2 Ecology's MTCA Method A cleanup levels (CULs) for unrestricted land use for arsenic and lead are the applicable regulatory criteria for this project. The CUL for arsenic is 20 milligrams per kilogram (mg/kg) The CUL for lead is 250 mg/kg. For reference, Ecology conducted a study to determine natural background concentrations of metals in soil for the Puget Sound area3. The study found that the natural background concentration for arsenic in soil is 7.0 parts per million (ppm) and 24 ppm for lead. Parts per million is roughly equivalent to mg/kg. CHARACTERIZATION SOIL SAMPLING On October 2, 2018, sixty-one (61) discrete soil samples were collected from forty-six (49) locations around the building landscaping and playfields of LGES. Following Ecology guidance, the property was divided into three decision units (DUs) based on current use as playfield or landscape area. Decision units and sample locations are shown on Figure 2. A summary of the decision units is provided below. The number of samples screened and collected for analysis per DU for this project is based on the Ecology guidance. Decision Units Decision Unit ID I Soil disturbance planned? Number of samples collected (0-6") Number of samples collected (6-12") Acres (approximate) Total Number of Samples 1 unknown 16 4 3.9 20 2 unknown 6 1 1.0 7 3 unknown 27 7 4.7 34 0-6" = Soil samples were collected from the 0-6 inch depth interval 6-12" = Soil samples were collected from the 6-12 inch depth interval One (1) discrete sample was collected at each sample location from a depth interval of zero to six inches below ground surface (bgs). A second discrete sample was collected at every fourth location from a depth interval of six to twelve inches bgs. Sample locations were chosen in a manner that maximized coverage of the decision units and did not contain areas with surface cover or buildings during the sampling activities. Soil sample collection started just below any surface cover layer (e.g., sod or grass). A hand spade and a hand auger were used to complete 6-inch deep test holes. A soil sample was collected at a depth of less than 6 inches below ground surface at each location. At every fourth location, upon collection of the zero to six-inch sample, the hole was advanced to a depth of twelve inches, and a second sample was collected from the six to twelve -inch depth interval using the same methods described above. 3 "Natural Background Soil Metals Concentrations in Washington State", Washington State Department of Ecology, October 1994, Publication No. 94-115 41519.000 Federal Way Public Schools Lake Grove Elementary School Arsenic and Lead Sampling Report October 17, 2018 Page 3 PBS personnel wore disposable nitrile gloves to protect against cross -contamination between samples. Soil retained for analysis was packed into laboratory -provided containers, labeled and transported on ice under chain of custody documentation to Friedman and Bruya, Inc. in Seattle, an Ecology accredited analytical laboratory. Samples were analyzed for total arsenic and lead using EPA Method 6020. Total arsenic and lead results were reported on a dry weight basis. ANALYTIC RESULTS Analytical results from soil samples collected on site are below MTCA Method A CULs for arsenic, except for one (1) sample. Arsenic was detected in exceedance of the CUL in sample LG-3-18 within DU3 at a concentration of 39.1 mg/kg. All other sample results for arsenic were below the MTCA Method A cleanup level of 20 mg/kg. All analytical results for lead from soil samples collected on -site are below the MTCA Method A cleanup level of 250 mg/kg. Based on the analytical results of soil samples collected on -site, average arsenic and lead concentrations were calculated for each decision unit and are presented below. Average Concentrations per Decision Unit Decision Unit ID Mean Concentration (0-6") Mean Concentration (6-12") As Pb As Pb 1 6.1 22.4 6.6 20.1 2 6.0 19.1 3A 10.0 3 4.7 9.9 5.1 9.6 MTCA A Cleanup Level 20 250 20 250 (0-6") (Pb / As) = Average Concentration at the zero to six-inch interval for arsenic (As) and lead (Pb) in mg/kg (6-12") (Pb / As) = Average Concentration at the six to twelve -inch interval for arsenic (As) and lead (Pb) in mg/kg Analytical results from soil samples collected on -site are summarized in Table 1. Figure 2 depicts the decision unit boundaries and the locations where analytical results indicated lead or arsenic concentrations above MTCA Method A CULs. Laboratory reports are provided in Attachment A. 41519.000 Federal Way Public Schools Lake Grove Elementary School Arsenic and Lead Sampling Report October 17, 2018 Page 4 CONCLUSIONS Based on the analytical results of the soil sampling, and using Ecology's Tacoma Smelter Plume Model Remedy Guidance, June 20121, the following conclusion and recommendations were made regarding the handling and management of project site soils. Decision Units 1 and 2 Analytical results from discrete soil samples collected within decision units 1 and 2 of the LGES site indicate arsenic and lead concentrations in soils are within the known local baseline for arsenic and lead contamination, and below MTCA Method A CULs for unrestricted land use. No further regulatory action or evaluation is required for the soil within decision units 1 and 2. Should soil from these areas be scheduled for removal and exported from the site, additional testing may be required for the purposes of off -site use or disposal by the accepting user or facility. Decision Unit 3 Analytical results from discrete soil samples collected within decision unit 3 of the LGES site identified one (1) location (LG-3-18) where arsenic concentrations are above MTCA Method A CULs. Further action will be required to address the arsenic concentrations in soil and achieve compliance with MTCA regulations. According to Ecology's Model Remedies Guidance, the impacted soil can be managed in -place or removed by excavation. Strategies for management of impacted soil in -place include dilution of arsenic concentrations via mixing of impacted soil with clean imported soil or capping of soil in place with clean soil and a geotextile or a hard cap. Mixing of soils is accepted for arsenic -impacted soil with an average concentration less than 40 ppm. The mixing option requires testing to confirm levels meet the MTCA criteria. Ecology does not consider capping in -place a permanent remediation strategy given the potential for exposure if the cap is removed. Capping in -place may require annual inspection of the cap's integrity, as well as the filing of an environmental land covenant for the property. Given the intended land use, PBS recommends removal of the impacted soil from the site. Remediation of impacted soils can be conducted by the contractor as part of the Lake Grove Elementary School Replacement Project under PBS's supervision, but must be completed prior to any grading, excavation or earthwork activities that disturb on -site soil. The construction design and specifications for remediation of the arsenic -impacted soil as part of the Lake Grove Elementary School Replacement Project shall incorporate health and safety requirements, methods for soil removal, disposal and confirmation sampling and soil management strategies. 41519.000 Federal Way Public Schools Lake Grove Elementary School Arsenic and Lead Sampling Report October 17, 2018 Page 5 LIMITATIONS This investigation was conducted to characterize lead and arsenic distributions in shallow soils on -site, with a focus on protection of human health and the environment. The data collected in this investigation are not intended for the purposes waste profiling for offsite disposal, or for estimation of volume or tonnage of soil requiring disposal. PBS has prepared this report for use by FWPS. This report is not intended for use by others without the written consent of the FWPS. Our interpretation of soil conditions in this study was based on field observations and analytical data from the indicated explorations. Regulated substances may exist in portions of the site that were not explored or analyzed. The conclusions in this report are not to be considered a legal opinion as the client's duty concerning due diligence relating to potential liabilities in leasing, owning, or purchasing real estate. PBS ENGINEERING AND ENVIRONMENTAL INC. James Welles, LG Project Geologist Reviewed By: Digitally signed by James Welles Date: 2018.10.1716,0729 -07'00' Digitally signed by Thomas Mergy Date: 2018.10.17 16:13:31-07'00' Thomas Mergy, LHG Environmental Services Manager Attachments: Figure 1: Vicinity Map Figure 2: Sample Location Map Table 1: Laboratory Data Summary Table Attachment A: Laboratory Data 41519.000 Figures SEATTLE OLYMPIA FEDERAL :WAYSI VANCOUVER SOURCE: USGS POVERTY BAY, WA QUADRANGLE 199U, PHOTO REVISED 1994. SCALE 1" = 2000' 0' 1,000' 2,000' 4,000' WASHINGTON PREPARED FOR: FEDERAL WAY PUBLIC SCHOOLS VICINITY MAP °519000 PBS LAKE GROVE ELEMENTARY SCHOOL FIGURE 303 SW 308TH STREET FEDERAL WAY, WASH NGTON LG-1-03.-1 r•-LG-1-04 �- LG-1-06 LG-1-08 SW 308TH ST 9 LG-1-01 0 ' LG-3-01 O O LG-3-02 I O LG-1-02 LG-1-05 LG-1-'07 I LG-3-03 LG1-09 0 O LG-1-10 • LG-3-04 O LG-3-05 LG-1-11 O LG-1-14 LG-1-15 LG-1-16 LG-3-06 LG-1-12 — LG-1-13 O LG-3-07 • LG-3-08 r LAKE GROVE ELEMENTARY LG-3-09 SCHOOL — ^I DECISION UNIT 1 LG-3-100 O LG-3-11 1 LG-2-010 — LG-2-03 +� i LG-3-12 0 DECISION UNIT 3 LG-2-02 ��` LG-2-05 ---------I c�LG-3-14 FF v w-�-io I LG 2-04 € LG-3-15 ' - LG-3-17 DECISION UNIT 2. a?---- -- - I LG-3-180 LG-3-190 LG-3-20 • LG-3-16 LG-3-21 LG-2-06 I LG-3-27 LG-3-22 1 J ■ LG-3-24 O LG-3-25 O LG-3-26 �j O LG-3-23 - BUBJBC rl PROPE.RTY �- - --RESIDENTIALowl 4� RESIDENTIAL LEGEND f SOURCE: © 2018 GOOGLE EARTH PRO O LG-1-02 SOIL SAMPLE LOCATION, DECISION UNIT AND IDENTIFICATION (0-6") • LG-1-01 SOIL SAMPLE LOCATION, DECISION UNIT AND IDENTIFICATION (0-6", 6-12") SCALE 1" = 125' 0' 62'-6" 125' 250' PREPARED FOR: FEDERAL WAY PUBLIC SCHOOLS As / Pb SOIL SAMPLE LOCATION MAP 4015192018 .0 0 �'- LAKE GROVE ELEMENTARY SCHOOL FIGURE B S_ FEDERALVWAY, WASH NGTON 2 Tables Site: Address: PBS Project No. Table 1 - Soil Sample Analytical Results Lake Grove Elementary School 303 SW 308th Street, Federal Way, WA 41519.000 Location / Sample Identification Sample Depth (inches bgs) Metals Arsenic m /k Lead m /k Regulatory Criteria MTCA Method A Cleanup Level 20 2S0 !Decision Unit 1 (-3.9 acres) LG-1-01 0-6 5.86 41.2 LG-1-02 0-6 6.91 12.9 LG-1-03 0-6 4.46 17.1 LG-1-04 0-6 5.09 16.3 LG-1-05 0-6 5.87 22.8 LG-1-06a 0-6 2.9 15.1 LG-1-07 0-6 3.53 28.5 LG-1-08 0-6 4.04 12.1 LG-1-09a 0-6 10 32.8 LG-1-10 0-6 10.8 36.9 LG-1-11 0-6 6.05 7.94 - 14.1 LG-1-12 0-6 19.5 LG-1-13 0-6 10.3 23.5 LG-1-14 0-6 4.53 19.3 LG-1-15a 0-6 7.34 24.2 LG-1-16a 0-6 2.74 21.9 Average 6.1 22.4 LG-1-06b 6-12 4.63 17.8 LG-1-09b 6-12 9.89 27.1 LG-1-15b 6-12 7.33 20.2 LG-1-16b 6-12 4.63 15.30 Average 6.61 20.1 (Decision Unit 2 (-1.0 acres) LG-2-01 0-6 5.71 12.7 LG-2-02 0-6 6.8 18.1 LG-2-03 0-6 7.37 24.9 LG-2-04a 1 0-6 3.27 17.2 LG-2-05 0-6 7.65 18.3 LG-2-06 0-6 5.33 23.2 Average 6.0 19.1 LG-2-04b 16-12 3.35 9.96 Average 3AI 10.011 Site: Address: PBS Project No. Table 1 - Soil Sample Analytical Results Lake Grove Elementary School 303 SW 308th Street, Federal Way, WA 41519.000 Location / Sample identification Sample Depth (inches bgs) Metals Arsenic m Lead m Regulatory Criteria MTCA Method A Cleanup Level 20 250 Decision Unit 3 (-4.7 acres) LG-3-01 0-6 5.6 10.2 LG-3-02 0-6 6.6 14.6 LG-3-03 0-6 2.8 4.69 LG-3-04a 0-6 1.45 1.54 LG-3-05 0-6 1.90 1.34 LG-3-06 0-6 2.13 1.73 LG-3-07 0-6 1.33 1.44 LG-3-08a 0-6 2.24 1.51 LG-3-09 0-6 2.01 1.72 LG-3-10 0-6 1.64 1.31 LG-3-11 0-6 2.07 1.53 LG-3-12a 0-6 1.69 1.41 LG-3-13 0-6 8.87 14.8 LG-3-14 0-6 1.78 1.35 LG-3-15 0-6 1.85 1.42 LG-3-16a 0-6 2.89 9.65 LG-3-17 0-6 2.74 10.3 LG-3-18 0-6 39.1 118 LG-3-19 0-6 2.65 2.77 LG-3-20a 0-6 1.47 1.53 LG-3-21 0-6 1.90 1.26 LG-3-22 0-6 3.09 16.4 LG-3-23 0-6 6.14 12.1 LG-3-24a 0-6 17.0 31A LG-3-25 0-6 1.73 1.42 LG-3-26 0-6 1.9 1.32 LG-3-27a 0-6 1.81 1.64 Average 4.7 9.9 LG-3-04b 6-12 1.64 1.34 LG-3-08b 6-12 2.21 1.44 LG-3-12b 6-12 2.23 1.54 LG-3-16b 6-12 7.38 16.9 LG-3-20b 1 6-12 1.59 1.30 LG-3-24b 6-12 18.8 43.3 LG-3-27b 6-12 1.92 1.56 Average 5.1 9.6 Arsenic and lead analwed by US EPA Method 6020 mg/kg - milligrams per kilogram bold = concentration exceeds adopted criteria bgs = below ground surface Attachment A Laboratory Report and Chain of Custody Documentation FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS James E. Bruya, Ph.D. Yelena Aravkina, M.S. Michael Erdahl, B.S. Arina Podnozova, B.S. Eric Young, B.S. October 10, 2018 James Welles, Project Manager PBS Engineering and Environmental, Inc. 2517 Eastlake Ave E, Suite 100 Seattle, WA 98102 Dear Mr Welles: 301216th Avenue West Seattle, WA 98119-2029 (206) 285-8282 fbi@isomedia.com www.fhedmanandbruya.com Included are the results from the testing of material submitted on October 2, 2018 from the Lake Grove As/Pb Investigation 41519.000, F&BI 810050 project. There are 24 pages included in this report. Any samples that may remain are currently scheduled for disposal in 30 days. If you would like us to return your samples or arrange for long term storage at our offices, please contact us as soon as possible. We appreciate this opportunity to be of service to you and hope you will call if you should have any questions. Sincerely, FRIEDMAN & BRUYA, INC. "41 X-1 � 14:� �� e � i Michael Erdahl Project Manager Enclosures PBS1010R.DOC FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS CASE NARRATIVE This case narrative encompasses samples received on October 2, 2018 by Friedman & Bruya, Inc. from the PBS Engineering and Environmental Lake Grove As/Pb Investigation 41519.000, F&BI 810050 project. Samples were logged in under the laboratory ID's listed below. Laboratory ID PBS Engineering and Environmental 810050 -01 LG-1-01a 810050 -02 LG-1-02 810050 -03 LG-1-03 810050 -04 LG-1-04 810050 -05 LG-1-05 810050 -06 LG-1-06a 810050 -07 LG-1-06b 810050 -08 LG-1-07 810050 -09 LG-1-08 810050 -10 LG-1-09a 810050 -11 LG-1-09b 810050 -12 LG-1-10 810050 -13 1G-i-11 810050 -14 LG-1-12 810050 -15 LG-1-13 810050 -16 LG-1-14 810050 -17 LG-1-15a 810050 -18 LG-1-15b 810050 -19 LG-1-16 810050 -20 LG-1-16b All quality control requirements were acceptable. 11 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-1-01a Client: PBS Engineering and Environmental Date Received: 10/02/18 Project: Lake Grove As/Pb Investigation Date Extracted: 10/04/18 Lab ID: 810050-01 Date Analyzed: 10/04/18 Data File: 810050-01.145 Matrix: Soil Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Arsenic 5.86 Lead 41.2 2 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-1-02 Client: Date Received: 10/02/18 Project: Date Extracted: 10/04/18 Lab ID: Date Analyzed: 10/04/18 Data File: Matrix: Soil Instrument: Units: mg/kg (ppm) Dry Weight Operator: Concentration Analyte: mg/kg (ppm) Arsenic 6.91 Lead 12.9 PBS Engineering and Environmental Lake Grove As/Pb Investigation 810050-02 810050-02.146 ICPMS2 SP 3 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-1-03 Client: PBS Engineering and Environmental Date Received: 10/02/18 Project: Lake Grove As/Pb Investigation Date Extracted: 10/04/18 Lab ID: 810050-03 Date Analyzed: 10/04/18 Data File: 810050-03.147 Matrix: Soil Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Arsenic 4.46 Lead 17.1 4 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-1-04 Client: PBS Engineering and Environmental Date Received: 10/02/18 Project: Lake Grove As/Pb Investigation Date Extracted: 10/04/18 Lab ID: 810050-04 Date Analyzed: 10/04/18 Data File: 810050-04.150 Matrix: Soil Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Arsenic 5.09 Lead 16.3 5 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-1-05 Client: PBS Engineering and Environmental Date Received: 10/02/18 Project: Lake Grove As/Pb Investigation Date Extracted: 10/04/18 Lab ID: 810050-05 Date Analyzed: 10/04/18 Data File: 810050-05.151 Matrix: Soil Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Arsenic 5.87 Lead 22.8 N. FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-1-06a Client: PBS Engineering and Environmental Date Received: 10/02/18 Project: Lake Grove As/Pb Investigation Date Extracted: 10/04/18 Lab ID: 810050-06 Date Analyzed: 10/04/18 Data File: 810050-06.152 Matrix: Soil Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Arsenic 2.90 Lead 15.1 7 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-1-06b Client: PBS Engineering and Environmental Date Received: 10/02/18 Project: Lake Grove As/Pb Investigation Date Extracted: 10/04/18 Lab ID: 810050-07 Date Analyzed: 10/04/18 Data File: 810050-07.153 Matrix: Soil Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Arsenic 4.77 Lead 17.8 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-1-07 Client: PBS Engineering and Environmental Date Received: 10/02/18 Project: Lake Grove As/Pb Investigation Date Extracted: 10/04/18 Lab ID: 810050-08 Date Analyzed: 10/04/18 Data File: 810050-08.154 Matrix: Soil Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Arsenic 3.53 Lead 28.5 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-1-08 Client: PBS Engineering and Environmental Date Received: 10/02/18 Project: Lake Grove As/Pb Investigation Date Extracted: 10/04/18 Lab ID: 810050-09 Date Analyzed: 10/04/18 Data File: 810050-09.155 Matrix: Soil Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Arsenic 4.04 Lead 12.1 10 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-1-09a Client: PBS Engineering and Environmental Date Received: 10/02/18 Project: Lake Grove As/Pb Investigation Date Extracted: 10/04/18 Lab ID: 810050-10 Date Analyzed: 10/04/18 Data File: 810050-10.156 Matrix: Soil , Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Arsenic 10.0 Lead 32.8 11 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-1-09b Client: PBS Engineering and Environmental Date Received: 10/02/18 Project: Lake Grove As/Pb Investigation Date Extracted: 10/04/18 Lab ID: 810050-11 Date Analyzed: 10/04/18 Data File: 810050-11.157 Matrix: Soil Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Arsenic 9.89 Lead 27.1 12 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-1-10 Client: PBS Engineering and Environmental Date Received: 10/02/18 Project: Lake Grove As/Pb Investigation Date Extracted: 10/04/18 Lab ID: 810050-12 Date Analyzed: 10/04/18 Data File: 810050-12.158 Matrix: Soil Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Arsenic 10.8 Lead 36.9 13 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-1-11 Client: PBS Engineering and Environmental Date Received: 10/02/18 Project: Lake Grove As/Pb Investigation Date Extracted: 10/04/18 Lab ID: 810050-13 Date Analyzed: 10/04/18 Data File: 810050-13.159 Matrix: Soil Instrument: ICPIdS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Arsenic 6.05 Lead 14.1 14 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-1-12 Client: PBS Engineering and Environmental Date Received: 10/02/18 Project: Lake Grove As/Pb Investigation Date Extracted: 10/04/18 Lab ID: 810050-14 Date Analyzed: 10/04/18 Data File: 810050-14.162 Matrix: Soil Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Arsenic 7.94 Lead 19.5 15 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-1-13 Client: PBS Engineering and Environmental Date Received: 10/02/18 Project: Lake Grove As/Pb Investigation Date Extracted: 10/04/18 Lab ID: 810050-15 Date Analyzed: 10/04/18 Data File: 810050-15.163 Matrix: Soil Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Arsenic 10.3 Lead 23.5 16 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-1-14 Client: Date Received: 10/02/18 Project: Date Extracted: 10/04/18 Lab ID: Date Analyzed: 10/04/18 Data File: Matrix: Soil Instrument: Units: mg/kg (ppm) Dry Weight Operator: Concentration Analyte: mg/kg (ppm) Arsenic 4.53 Lead 19.3 PBS Engineering and Environmental Lake Grove As/Pb Investigation 810050-16 810050-16.164 ICPMS2 SP 17 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-1-15a Client: PBS Engineering and Environmental Date Received: 10/02/18 Project: Lake Grove As/Pb Investigation Date Extracted: 10/04/18 Lab ID: 810050-17 Date Analyzed: 10/04/18 Data File: 810050-17.165 Matrix: Soil Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Arsenic 7.34 Lead 24.2 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-1-15b Client: PBS Engineering and Environmental Date Received: 10/02/18 Project: Lake Grove As/Pb Investigation Date Extracted: 10/04/18 Lab ID: 810050-18 Date Analyzed: 10/04/18 Data File: 810050-18.166 Matrix: Soil Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Arsenic 7.33 Lead 20.2 19 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-1-16 Client: PBS Engineering and Environmental Date Received: 10/02/18 Project: Lake Grove As/Pb Investigation Date Extracted: 10/04/18 Lab ID: 810050-19 Date Analyzed: 10/04/18 Data 131e: 810050-19.167 Matrix: Soil Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Arsenic 2.74 Lead 21.9 20 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-1-16b Client: PBS Engineering and Environmental Date Received: 10/02/18 Project: Lake Grove As/Pb Investigation Date Extracted: 10/04/18 Lab ID: 810050-20 Date Analyzed. 10/04/18 Data File: 810050-20.168 Matrix: Soil Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Arsenic 4.63 Lead 15.3 21 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: Method Blank Client: PBS Engineering and Environmental Date Received: Not Applicable Project: Lake Grove As/Pb Investigation Date Extracted: 10/04/18 Lab ID: I8-664 mb Date Analyzed: 10/04/18 Data File: I8-664 mb.143 Matrix: Soil Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Arsenic <1 Lead <1 22 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Date of Report: 10/10/18 Date Received: 10/02/18 Project: Lake Grove As/Pb Investigation 41519.000, F&BI 810050 QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF SOIL SAMPLES FOR TOTAL METALS USING EPA METHOD 6020B Laboratory Code: 810050-20 (Matrix Spike) Sample Percent Percent Reporting Spike Result Recovery Recovery Acceptance RPD Analvte Units Level (Wet wt) MS MSD Criteria (Limit 20) Arsenic mg/kg (ppm) 10 4.16 80 87 75-125 8 Lead mg/kg (ppm) 50 13.8 92 b 116 b 75-125 23 b Laboratory Code: Laboratory Control Sample Percent Reporting Spike Recovery Acceptance Analvte Units Level LCS Criteria Arsenic mg/kg (ppm) 10 94 80-120 Lead mg/kg (ppm' 50 98 80-i20 23 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Data Qualifiers & Definitions a - The analyte was detected at a level less than five times the reporting limit. The RPD results may not provide reliable information on the variability of the analysis. b - The analyte was spiked at a level that was less than five times that present in the sample. Matrix spike recoveries may not be meaningful. ca - The calibration results for the analyte were outside of acceptance criteria. The value reported is an estimate. c - The presence of the analyte may be due to carryover from previous sample injections. cf - The sample was centrifuged prior to analysis. d - The sample was diluted. Detection limits were raised and surrogate recoveries may not be meaningful. dv - Insufficient sample volume was available to achieve normal reporting limits. f - The sample was laboratory filtered prior to analysis. fb - The analyte was detected in the method blank. fc - The compound is a common laboratory and field contaminant. hr - The sample and duplicate were reextracted and reanalyzed. RPD results were still outside of control limits. Variability is attributed to sample inhomogeneity. hs - Headspace was present in the container used for analysis. lit — The analysis was performed outside the method or client -specified holding time requirement. ip - Recovery fell outside of control limits. Compounds in the sample matrix interfered with the quantitation of the analyte. j - The analyte concentration is reported below the lowest calibration standard. The value reported is an estimate. J - The internal standard associated with the analyte is out of control limits. The reported concentration is an estimate. jl - The laboratory control sample(s) percent recovery andlor RPD were out of control limits. The reported concentration should be considered an estimate. - The surrogate associated with the analyte is out of control limits. The reported concentration should ee The an estimate. lc - The presence of the analyte is likely due to laboratory contamination. L - The reported concentration was generated from a library search. nm - The analyte was not detected in one or more of the duplicate analyses. Therefore, calculation of the RPD is not applicable. pc - The sample was received with incorrect preservation or in a container not approved by the method. The value reported should be considered an estimate. ve - The analyte response exceeded the valid instrument calibration range. The value reported is an estimate. vo - The value reported fell outside the control limits established for this analyte. x - The sample chromatographic pattern does not resemble the fuel standard used for quantitation. 24 �Y, F. SN C El CL En r C+ coo 00 tv tl* to v 0 CD CD 0 :n Pk- V C� m C4 K91; o gr L cr, AA ov V-0 Immi Ilk H Ef TPH-Dieeel TPH-Gasoline BTEX by 8021B VOCs by 8.260 SVOCs by 8270 z ro 2o �y tV m M i al, "15 PT �F tp > Cl oq ED SD g? it Mi CD FRIE DMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS James E. Bruya, Ph.D. Yelena Aravkina, M.S. Michael Erdahl, B.S. Arina Podnozova, B.S. Eric Young, B.S. October 8, 2018 James Welles, Project Manager PBS Engineering and Environmental, Inc. 2517 Eastlake Ave E, Suite 100 Seattle, WA 98102 Dear Mr Welles: 301216th Avenue West Seattle, WA 98119-2029 (206) 285-8282 fbi@isomedia.com www.ftledmanandbruya.com Included are the results from the testing of material submitted on October 2, 2018 from the Lake Grove As/Pb Inv 41519.000, F&BI 810049 project. There are 11 pages included in this report. Any samples that may remain are currently scheduled for disposal in 30 days. If you would like us to return your samples or arrange for long term storage at our offices, please contact us as soon as possible. We appreciate this opportunity to be of service to you and hope you will call if you should have any questions. Sincerely, FRIEDMAN & BRUYA, INC. Michael Erdahl Project Manager Enclosures PBS1008R.DOC FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS CASE NARRATIVE This case narrative encompasses samples received on October 2, 2018 by Friedman & Bruya, Inc. from the PBS Engineering and Environmental Lake Grove As/Pb Inv 41519.000, F&BI 810049 project. Samples were logged in under the laboratory ID's listed below. Laboratory ID PBS Engineering and Environmental 810049 -01 LG-2-01 810049 -02 LG-2-02 810049 -03 LG-2-03 810049 -04 LG-2-04a 810049 -05 LG-2-04b 810049 -06 LG-2-05 810049 -07 LG-2-06 All quality control requirements were acceptable. 1 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-2-01 Client: PBS Engineering and Environmental Date Received: 10/02/18 Project: Lake Grove As/Pb Inv 41519.000 Date Extracted: 10/04/18 Lab ID: 810049-01 Date Analyzed: 10/04/18 Data File: 810049-01.134 Matrix: Soil Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Arsenic 5.71 Lead 12.7 2 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-2-02 Client: PBS Engineering and Environmental Date Received: 10/02/18 Project: Lake Grove As/Pb Inv 41519.000 Date Extracted: 10/04/18 Lab ID: 810049-02 Date Analyzed: 10/04/18 Data File: 810049-02.135 Matrix: Soil Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Arsenic 6.80 Lead 18.1 3 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-2-03 Client: Date Received: 10/02/18 Project: Date Extracted: 10/04/18 Lab ID: Date Analyzed: 10/04/18 Data File: Matrix: Soil Instrument: Units: mg/kg (ppm) Dry Weight Operator: Concentration Analyte: mg/kg (ppm) Arsenic 7.37 Lead 24.9 PBS Engineering and Environmental Lake Grove As/Pb Inv 41519.000 810049-03 810049-03.138 ICPMS2 SP 4 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-2-04a Client: Date Received: 10/02/18 Project: Date Extracted: 10/04/18 Lab ID: Date Analyzed. 10/04/18 Data File: Matrix: Soil Instrument: Units: mg/kg (ppm) Dry Weight Operator: Concentration Analyte: mg/kg (ppm) Arsenic 3.27 Lead 17.2 PBS Engineering and Environmental Lake Grove As/Pb Inv 41519.000 810049-04 810049-04.139 ICPMS2 SP FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-2-04b Client: PBS Engineering and Environmental Date Received. 10/02/18 Project: Lake Grove As/Pb Inv 41519.000 Date Extracted. 10/04/18 Lab ID: 810049-05 Date Analyzed: 10/04/18 Data File: 810049-05.140 Matrix: Soil Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Arsenic 3.35 Lead 9.96 N. FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-2-05 Client: PBS Engineering and Environmental Date Received: 10/02/18 Project: Lake Grove As/Pb Inv 41519.000 Date Extracted: 10/04/18 Lab ID: 810049-06 Date Analyzed: 10/04/18 Data File: 810049-06.141 Matrix: Soil Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Arsenic 7.65 Lead 18.3 rA FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-2-06 Client: PBS Engineering and Environmental Date Received: 10/02/18 Project: Lake Grove As/Pb Inv 41519.000 Date Extracted: 10/04/18 Lab ID: 810049-07 Date Analyzed: 10/04/18 Data File: 810049-07.142 Matrix: Soil Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Arsenic 5.33 Lead 23.2 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: Method Blank Client: PBS Engineering and Environmental Date Received: Not Applicable Project: Lake Grove As/Pb Inv 41519.000 Date Extracted: 10/04/18 Lab ID: I8-662 mb2 Date Analyzed: 10/04/18 Data File: I8-662 mb2.133 Matrix: Soil Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Arsenic <1 Lead <1 0 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Date of Report: 10/08/18 Date Received: 10/02/18 Project: Lake Grove As/Pb Inv 41519.000, F&BI 810049 QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF SOIL SAMPLES FOR TOTAL METALS USING EPA METHOD 6020B Laboratory Code: 810034-01 (Matrix Spike) Sample Percent Percent Reporting Spike Result Recovery Recovery Acceptance RPD Analyte Units Level (Wet wt) MS MSD Criteria (Limit 20) Arsenic mg/kg (ppm) 10 4.20 75 75 75-125 0 Lead mg/kg (ppm) 50 58.3 74 b 67 b 75-125 10 b Laboratory Code: Laboratory Control Sample Percent Reporting Spike Recovery Acceptance Analyte Units Level LCS Criteria Arsenic mg/kg (ppm) 10 98 80-120 Lead mg/kg (ppm) 50 98 80-120 10 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Data Qualifiers & Definitions a - The analyte was detected at a level less than five times the reporting limit. The RPD results may not provide reliable information on the variability of the analysis. b - The analyte was spiked at a level that was less than five times that present in the sample. Matrix spike recoveries may not be meaningful. ca - The calibration results for the analyte were outside of acceptance criteria. The value reported is an estimate. c - The presence of the analyte may be due to carryover from previous sample injections. cf - The sample was centrifuged prior to analysis. d - The sample was diluted. Detection limits were raised and surrogate recoveries may not be meaningfu 1. dv - Insufficient sample volume was available to achieve normal reporting limits. f - The sample was laboratory filtered prior to analysis. fb - The analyte was detected in the method blank. fc - The compound is a common laboratory and field contaminant. hr - The sample and duplicate were reextracted and reanalyzed. RPD results were still outside of control limits. Variability is attributed to sample inhomogeneity. hs - Headspace was present in the container used for analysis. lit — The analysis was performed outside the method or client -specified holding time requirement. ip - Recovery fell outside of control limits. Compounds in the sample matrix interfered with the quantitation of the analyte. j - The analyte concentration is reported below the lowest calibration standard. The value reported is an estimate. J - The internal standard associated with the analyte is out of control limits. The reported concentration is an estimate. jl - The laboratory control sample(s) percent recovery and/or RPD were out of control limits. The reported concentration should be considered an estimate. s - The surrogate associated with the analyte is out of control limits. The reported concentration should ee The an estimate. lc - The presence of the analyte is likely due to laboratory contamination. L - The reported concentration was generated from a library search. nm - The analyte was not detected in one or more of the duplicate analyses. Therefore, calculation of the RPD is not applicable. pc - The sample was received with incorrect preservation or in a container not approved by the method. The value reported should be considered an estimate. ve - The analyte response exceeded the valid instrument calibration range. The value reported is an estimate. vo - The value reported fell outside the control limits established for this analyte. x - The sample chromatographic pattern does not resemble the fuel standard used for quantitation. 11 0 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS James E. Bruya, Ph.D. Yelena Aravkina, M.S. Michael Erdahl, B.S. ArinaPodnozova, B.S. Eric Young, B.S. October 10, 2018 James Welles, Project Manager PBS Engineering and Environmental, Inc. 2517 Eastlake Ave E, Suite 100 Seattle, WA 98102 Dear Mr Welles: 301216th Avenue West Seattle, WA 98119-2029 (206) 285-8282 fbi@isomedia.com www.ft!Mmwiandbriiya.com Included are the results from the testing of material submitted on October 2, 2018 from the Lake Grove As/Pb Inv 41519.000, F&BI 810051 project. There are 40 pages included in this report. Any samples that may remain are currently scheduled for disposal in 30 days. If you would like us to return your samples or arrange for long term storage at our offices, please contact us as soon as possible. We appreciate this opportunity to be of service to you and hope you will call if you should have any questions. Sincerely, FRIEDMAN & BRUYA, INC. Michael Erdahl Project Manager Enclosures PBS1010R.DOC FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS CASE NARRATIVE This case narrative encompasses samples received on October 2, 2018 by Friedman & Bruya, Inc. from the PBS Engineering and Environmental Lake Grove As/Pb Inv 41519.000, F&BI 810051 project. Samples were logged in under the laboratory ID's listed below. Laboratory ID PBS Engineering and Environmental 810051 -01 LG-3-01 810051 -02 LG-3-02 810051 -03 LG-3-03 810051 -04 LG-3-04a 810051 -05 LG-3-04b 810051 -06 LG-3-05 810051 -07 LG-3-06 810051 -08 LG-3-07 810051 -09 LG-3-08a 810051 -10 LG-3-08b 810051 -11 LG-3-09 810051 -12 LG-3-10 810051 -13 LG-3-11 810051 -14 LG-3-12a 810051 -15 LG-3-12b 810051 -16 LG-3-13 810051 -17 LG-3-14 810051 -18 LG-3-15 810051 -19 LG-3-16a 810051 -20 LG-3-16b 810051 -21 LG-3-17 810051 -22 LG-3-18 810051 -23 LG-3-19 810051 -24 LG-3-20a 810051 -25 LG-3-20b 810051 -26 LG-3-21 810051 -27 LG-3-22 810051 -28 LG-3-23 810051 -29 LG-3-24a 810051 -30 LG-3-24b 810051 -31 LG-3-25 810051 -32 LG-3-26 810051 -33 LG-3-27a 810051 -34 LG-3-27b All quality control requirements were acceptable. 1 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-3-01 Client: PBS Engineering and Environmental Date Received: 10/02/18 Project: Lake Grove As/Pb Inv 41519.000 Date Extracted: 10/04/18 Lab ID: 810051-01 Date Analyzed: 10/05/18 Data File: 810051-01.100 Matrix: Soil Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (Ppm) Arsenic 5.63 Lead 10.2 N FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-3-02 Client: PBS Engineering and Environmental Date Received: 10/02/18 Project: Lake Grove As/Pb Inv 41519.000 Date Extracted: 10/04/18 Lab ID: 810051-02 Date Analyzed: 10/05/18 Data File: 810051-02.103 Matrix: Soil Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Arsenic 6.55 Lead 14.6 3 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-3-03 Client: PBS Engineering and Environmental Date Received: 10/02/18 Project: Lake Grove As/Pb Inv 41519.000 Date Extracted: 10/04/18 Lab ID: 810051-03 Date Analyzed: 10/05/18 Data File: 810051-03.104 Matrix: Soil Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Arsenic 2.82 Lead 4.69 4 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-3-04a Client: Date Received. 10/02/18 Project: Date Extracted: 10/04/18 Lab ID: Date Analyzed: 10/05/18 Data File: Matrix: Soil Instrument: Units: mg/kg (ppm) Dry Weight Operator: Concentration Analyte: mg/kg (ppm) Arsenic 1.45 Lead 1.54 PBS Engineering and Environmental Lake Grove As/Pb Inv 41519.000 810051-04 810051-04.105 ICPMS2 SP 5 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-3-04b Client: PBS Engineering and Environmental Date Received: 10/02/18 Project: Lake Grove As/Pb Inv 41519.000 Date Extracted: 10/04/18 Lab ID: 810051-05 Date Analyzed: 10/05/18 Data File: 810051-05.109 Matrix: Soil Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Arsenic 1.64 Lead 1.34 R FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-3-05 Client: PBS Engineering and Environmental Date Received: 10/02/18 Project: Lake Grove As/Pb Inv 41519.000 Date Extracted: 10/04/18 Lab ID: 810051-06 Date Analyzed: 10/05/18 Data File: 810051-06.110 Matrix: Soil Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Arsenic 1.90 Lead 1.34 h FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-3-06 Client: PBS Engineering and Environmental Date Received: 10/02/18 Project: Lake Grove As/Pb Inv 41519.000 Date Extracted: 10/04/18 Lab ID: 810051-07 Date Analyzed: 10/05/18 Data File: 810051-07.154 Matrix: Soil Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Arsenic 2.13 Lead 1.73 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-3-07 Client: Date Received: 10/02/18 Project: Date Extracted: 10/04/18 Lab ID: Date Analyzed: 10/05/18 Data File: Matrix: Soil Instrument: Units: mg/kg (ppm) Dry Weight Operator: Concentration Analyte: mg/kg (ppm) Arsenic 1.33 Lead 1.44 PBS Engineering and Environmental Lake Grove As/Pb Inv 41519.000 810051-08 810051-08.155 ICPMS2 SP 0 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-3-08a Client: PBS Engineering and Environmental Date Received: 10/02/18 Project: Lake Grove As/Pb Inv 41519.000 Date Extracted: 10/04/18 Lab ID: 810051-09 Date Analyzed: 10/05/18 Data File: 810051-09.156 Matrix: Soil Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Arsenic 2.24 Lead 1.51 10 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-3-08b Client: Date Received: 10/02/18 Project: Date Extracted: 10/04/18 Lab ID: Date Analyzed: 10/05/18 Data File: Matrix: Soil Instrument: Units: mg/kg (ppm) Dry Weight Operator: Concentration Analyte: mg/kg (ppm) Arsenic 2.21 Lead 1.44 PBS Engineering and Environmental Lake Grove As/Pb Inv 41519.000 810051-10 810051-10.157 ICPMS2 SP 11 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-3-09 Client: PBS Engineering and Environmental Date Received: 10/02/18 Project: Lake Grove As/Pb Inv 41519.000 Date Extracted: 10/04/18 Lab ID: 810051-11 Date Analyzed: 10/05/18 Data File: 810051-11.158 Matrix: Soil Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Arsenic 2.01 Lead 1.72 12 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-3-10 Client: Date Received: 10/02/18 Project: Date Extracted: 10/04/18 Lab ID: Date Analyzed. 10/05/18 Data File: Matrix: Soil Instrument: Units: mg/kg (ppm) Dry Weight Operator: Concentration Analyte: mg/kg (ppm) Arsenic 1.64 Lead 1.31 PBS Engineering and Environmental Lake Grove As/Pb Inv 41519.000 810051-12 810051-12.159 ICPMS2 SP 13 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-3-11 Client: PBS Engineering and Environmental Date Received: 10/02/18 Project: Lake Grove As/Pb Inv 41519.000 Date Extracted: 10/04/18 Lab ID: 810051-13 Date Analyzed: 10/05/18 Data File: 810051-13.160 Matrix: Soil Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Arsenic 2.07 Lead 1.53 14 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-3-12a Client: PBS Engineering and Environmental Date Received: 10/02/18 Project: Lake Grove As/Pb Inv 41519.000 Date Extracted: 10/04/18 Lab ID: 810051-14 Date Analyzed: 10/05/18 Data File: 810051-14.163 Matrix: Soil Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Arsenic 1.69 Lead 1.41 15 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-3-12b Client: PBS Engineering and Environmental Date Received: 10/02/18 Project: Lake Grove As/Pb Inv 41519.000 Date Extracted: 10/04/18 Lab ID: 810051-15 Date Analyzed: 10/05/18 Data File: 810051-15.164 Matrix: Soil Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Arsenic 2.23 Lead 1.54 16 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-3-13 Client: Date Received: 10/02/18 Project: Date Extracted: 10/04/18 Lab ID: Date Analyzed: 10/05/18 Data File: Matrix: Soil Instrument: Units: mg/kg (ppm) Dry Weight Operator: Concentration Analyte: mg/kg (ppm) Arsenic 8.87 Lead 14.8 PBS Engineering and Environmental Lake Grove As/Pb Inv 41519.000 810051-16 810051-16.165 ICPMS2 SP 17 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-3-14 Client: PBS Engineering and Environmental Date Received: 10/02/18 Project: Lake Grove As/Pb Inv 41519.000 Date Extracted: 10/04/18 Lab ID: 810051-17 Date Analyzed: 10/05/18 Data File: 810051-17.166 Matrix: Soil Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Arsenic 1.78 Lead 1.35 E FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-3-15 Client: PBS Engineering and Environmental Date Received: 10/02/18 Project: Lake Grove As/Pb Inv 41519.000 Date Extracted: 10/04/18 Lab ID: 810051-18 Date Analyzed: 10/05/18 Data File: 810051-18.167 Matrix: Soil Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Arsenic 1.85 Lead 1.42 19 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-3-16a Client: PBS Engineering and Environmental Date Received: 10/02/18 Project: Lake Grove As/Pb Inv 41519.000 Date Extracted: 10/04/18 Lab ID: 810051-19 Date Analyzed: 10/05/18 Data File: 810051-19.168 Matrix: Soil Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Arsenic 2.89 Lead 9.65 20 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-3-16b Client: Date Received: 10/02/18 Project: Date Extracted: 10/04/18 Lab ID: Date Analyzed: 10/05/18 Data File: Matrix: Soil Instrument: Units: mg/kg (ppm) Dry Weight Operator: Concentration Analyte: mg/kg (ppm) Arsenic 7.38 Lead 16.9 PBS Engineering and Environmental Lake Grove As/Pb Inv 41519.000 810051-20 810051-20.169 ICPMS2 SP 21 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-3-17 Client: PBS Engineering and Environmental Date Received: 10/02/18 Project: Lake Grove As/Pb Inv 41519.000 Date Extracted: 10/04/18 Lab ID: 810051-21 Date Analyzed: 10/05/18 Data File: 810051-21.175 Matrix: Soil Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Arsenic 2.74 Lead 10.3 22 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-3-18 Client: Date Received. 10/02/18 Project: Date Extracted: 10/04/18 Lab ID: Date Analyzed: 10/05/18 Data File: Matrix: Soil Instrument: Units: mg/kg (ppm) Dry Weight Operator: Concentration Analyte: mg/kg (ppm) Arsenic 39.1 Lead 118 PBS Engineering and Environmental Lake Grove As/Pb Inv 41519.000 810051-22 810051-22.178 ICPMS2 SP 23 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-3-19 Client: PBS Engineering and Environmental Date Received: 10/02/18 Project: Lake Grove As/Pb Inv 41519.000 Date Extracted: 10/04/18 Lab ID: 810051-23 Date Analyzed: 10/05/18 Data File: 810051-23.179 Matrix: Soil Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Arsenic 2.65 Lead 2.77 24 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-3-20a Client: Date Received: 10/02/18 Project: Date Extracted: 10/04/18 Lab ID: Date Analyzed: 10/05/18 Data File: Matrix: Soil Instrument: Units: mg/kg (ppm) Dry Weight Operator: Concentration Analyte: mg/kg (ppm) Arsenic 1.47 Lead 1.53 PBS Engineering and Environmental Lake Grove As/Pb Inv 41519.000 810051-24 810051-24.180 ICPMS2 SP 25 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-3-20b Client: PBS Engineering and Environmental Date Received: 10/02/18 Project: Lake Grove As/Pb Inv 41519.000 Date Extracted: 10/04/18 Lab ID: 810051-25 Date Analyzed: 10/05/18 Data File: 810051-25.181 Matrix: Soil Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Arsenic 1.59 Lead 1.30 26 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-3-21 Client: Date Received: 10/02/18 Project: Date Extracted: 10/04/18 Lab ID: Date Analyzed: 10/05/18 Data File: Matrix: Soil Instrument: Units: mg/kg (ppm) Dry Weight Operator: Concentration Analyte: mg/kg (ppm) Arsenic 1.90 Lead 1.26 PBS Engineering and Environmental Lake Grove As/Pb Inv 41519.000 810051-26 810051-26.182 ICPMS2 SP 27 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-3-22 Client: PBS Engineering and Environmental Date Received: 10/02/18 Project: Lake Grove As/Pb Inv 41519.000 Date Extracted: 10/04/18 Lab ID: 810051-27 Date Analyzed: 10/06/18 Data File: 810051-27.195 Matrix: Soil Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Arsenic 3.09 Lead 16.4 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-3-23 Client: PBS Engineering and Environmental Date Received: 10/02/18 Project: Lake Grove As/Pb Inv 41519.000 Date Extracted: 10/04/18 Lab ID: 810051-28 Date Analyzed: 10/06/18 Data File: 810051-28.196 Matrix: Soil Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Arsenic 6.14 Lead 12.1 29 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-3-24a Client: PBS Engineering and Environmental Date Received: 10/02/18 Project: Lake Grove As/Pb Inv 41519.000 Date Extracted: 10/04/18 Lab ID: 810051-29 Date Analyzed: 10/06/18 Data File: 810051-29.197 Matrix: Soil Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Arsenic 17.0 Lead 31.4 30 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-3-24b Client: Date Received: 10/02/18 Project: Date Extracted: 10/04/18 Lab ID: Date Analyzed: 10/06/18 Data File: Matrix: Soil Instrument: Units: mg/kg (ppm) Dry Weight Operator: Concentration Analyte: mg/kg (ppm) Arsenic 18.8 Lead 43.3 PBS Engineering and Environmental Lake Grove As/Pb Inv 41519.000 810051-30 810051-30.207 ICPMS2 SP 31 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-3-25 Client: Date Received: 10/02/18 Project: Date Extracted: 10/04/18 Lab ID: Date Analyzed: 10/06/18 Data File: Matrix: Soil Instrument: Units: mg/kg (ppm) Dry Weight Operator: Concentration Analyte: mg/kg (ppm) Arsenic 1.73 Lead 1.42 PBS Engineering and Environmental Lake Grove As/Pb Inv 41519.000 810051-31 810051-31.208 ICPMS2 SP 32 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-3-26 Client: PBS Engineering and Environmental Date Received. 10/02/18 Project: Lake Grove As/Pb Inv 41519.000 Date Extracted. 10/04/18 Lab ID: 810051-32 Date Analyzed: 10/06/18 Data File: 810051-32.209 Matrix: Soil Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Arsenic 1.90 Lead 1.32 33 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-3-27a Client: Date Received: 10/02/18 Project: Date Extracted: 10/04/18 Lab ID: Date Analyzed: 10/06/18 Data File: Matrix: Soil Instrument: Units: mg/kg (ppm) Dry Weight Operator: Concentration Analyte: mg/kg (ppm) Arsenic 1.81 Lead 1.64 PBS Engineering and Environmental Lake Grove As/Pb Inv 41519.000 810051-33 810051-33.218 ICPMS2 SP 34 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: LG-3-27b Client: PBS Engineering and Environmental Date Received: 10/02/18 Project: Lake Grove As/Pb Inv 41519.000 Date Extracted: 10/04/18 Lab ID: 810051-34 Date Analyzed: 10/06/18 Data File: 810051-34.219 Matrix: Soil Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Arsenic 1.92 Lead 1.56 35 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: Method Blank Client: PBS Engineering and Environmental Date Received: Not Applicable Project: Lake Grove As/Pb Inv 41519.000 Date Extracted: 10/04/18 Lab ID: I8-666 mb Date Analyzed: 10/05/18 Data File: I8-666 mb.034 Matrix: Soil Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Arsenic <1 Lead <1 41-1 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 6020B Client ID: Method Blank Client: PBS Engineering and Environmental Date Received: Not Applicable Project: Lake Grove As/Pb Inv 41519.000 Date Extracted: 10/04/18 Lab ID: I8-667 mb Date Analyzed: 10/05/18 Data File: I8-667 mb.170 Matrix: Soil Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Arsenic <1 Lead <1 37 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Date of Report: 10/10/18 Date Received: 10/02/18 Project: Lake Grove As/Pb Inv 41519.000, F&BI 810051 QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF SOIL SAMPLES FOR TOTAL METALS USING EPA METHOD 6020B Laboratory Code: 810051-01 (Matrix Spike) Sample Percent Percent Reporting Spike Result Recovery Recovery Acceptance RPD Analyte Units Level (Wet wt) MS MSD Criteria (Limit 20) Arsenic mg/kg (ppm) 10 4.90 98 93 75-125 5 Lead mg/kg (ppm) 50 8.84 93 85 75-125 9 Laboratory Code: Laboratory Control Sample Percent Reporting Spike Recovery Acceptance Analyte Units Level LCS Criteria Arsenic mg/kg (ppm) 10 94 80-120 Lead mg/kg (ppm) 50 96 80-120 0 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Date of Report: 10/10/18 Date Received: 10/02/18 Project: Lake Grove As/Pb Inv 41519.000, F&BI 810051 QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF SOIL SAMPLES FOR TOTAL METALS USING EPA METHOD 6020B Laboratory Code: 810051-21 (Matrix Spike) Sample Percent Percent Reporting Spike Result Recovery Recovery Acceptance RPD Analvte Units Level (Wet wt) MS MSD Criteria (Limit 20) Arsenic mg/kg (ppm) 10 2.36 90 87 75-125 3 Lead mg/kg (ppm) 50 8.85 89 88 75-125 1 Laboratory Code: Laboratory Control Sample Percent Reporting Spike Recovery Acceptance Anal�te Units Level LCS Criteria Arsenic mg/kg (ppm) 10 98 80-120 Lead mg/kg (ppm) 50 102 80-120 39 FRIEDMAN & BRUYA, INC. ENVIRONMENTAL CHEMISTS Data Qualifiers & Definitions a - The analyte was detected at a level less than five times the reporting limit. The RPD results may not provide reliable information on the variability of the analysis. b - The analyte was spiked at a level that was less than five times that present in the sample. Matrix spike recoveries may not be meaningful. ca - The calibration results for the analyte were outside of acceptance criteria. The value reported is an estimate. c - The presence of the analyte may be due to carryover from previous sample injections. cf - The sample was centrifuged prior to analysis. d - The sample was diluted. Detection limits were raised and surrogate recoveries may not be meaningfu I. dv - Insufficient sample volume was available to achieve normal reporting limits. f - The sample was laboratory filtered prior to analysis. fib - The analyte was detected in the method blank. fc - The compound is a common laboratory and field contaminant. hr - The sample and duplicate were reextracted and reanalyzed. RPD results were still outside of control limits. Variability is attributed to sample inhomogeneity. hs - Headspace was present in the container used for analysis. ht — The analysis was performed outside the method or client -specified holding time requirement. ip - Recovery fell outside of control limits. Compounds in the sample matrix interfered with the quantitation of the analyte. j - The analyte concentration is reported below the lowest calibration standard. The value reported is an estimate. J - The internal standard associated with the analyte is out of control limits. The reported concentration is an estimate. jl - The laboratory control sample(s) percent recovery and/or RPD were out of control limits. The reported concentration should be considered an estimate. s - The surrogate associated with the analyte is out of control limits. The reported concentration should to The an estimate. lc - The presence of the analyte is likely due to laboratory contamination. L - The reported concentration was generated from a library search. nm - The analyte was not detected in one or more of the duplicate analyses. Therefore, calculation of the RPD is not applicable. c - The sample was received with incorrect preservation or in a container not approved by the method. The value reported should be considered an estimate. ve - The analyte response exceeded the valid instrument calibration range. The value reported is an estimate. vo - The value reported fell outside the control limits established for this analyte. x - The sample chromatographic pattern does not resemble the fuel standard used for quantitation. 40 R Del o o ro o a gg 0 � R. C�� � ► ► + ' + �'1 0 a cd o. Cp r DOT r-e � 'N" d — kr] .— .r 'ok t N •--• .+ i „� a 0 V' rSa r m TPH-Diesel � TPH-Gasoline BTEX by 8021B VOCs by- 8260 SVOCs by 8270 HFS O ca b p C� ^ M Iro {I I,.. ro � m IUN w m x 4 �h -o � ro i y C� y G � o Q d �i �i O is ' W � e [ a m A C7 -cy > v, ��� c r p cc0UP „ .� g cr T to cj ="6 9 ri n e• .a a ._. ^, � � � � � � _ V � ■ R ylik Q 'C3 n O �f ►� m rm TPH-Diesel 1�7 TPH-Gasoline BTEX by 8021B VOCs by 8260 9 SVOCs by 8270 9 HF'S •`'�v GO 6.0192E�+ co �3 n C� (D P. 0 CD 0 a [ll r� y Q H r tl � Vj 9 ti. � S by q Q o � � � r- r-- � N °Z o � Q o ❑ C3 aid �t o rn 13 1 cn tD Z H � CD o �Vi D N t � � w O r N UrU\9 +j BEEN CD d �d a y m cn K +G► w TPH-HCID TPH-Diesel TPH-Gasoline BTEX by 8021B VOCs by 8260C SVOCs by 8270D .PAHs.8270D SIM ii 0 Orn N N w � � > y K z v a C � y O C � ro O O 0 0° n 0'0. o:P.tj a �'°ter y o d m m O al r W FEDERAL WAY Department of PUBLIC SCHOOLS Maintenance & Operations TO: City of Federal Way Public Works - Traffic Division FROM: Mike Benzien, Executive Director of Maintenance and Operations Michael Swartz, Executove Director of Capital Projects PROJECT: Lake Grove Elementary School SUBJECT: FWPS School Bus / Staff Traffic DATE: June 29, 2019 This memorandum is regarding the Federal Way Public Schools (FWPS) Capital Bond projects, specifically for Lake Grove Elementary School. This will address the potential conflicts between the Staff traffic and the school buses. The conflict relates to where the school bus turns into the opposing traffic lane when entering and leaving the Lake Grove Staff parking / driveway. FWPS will address this situation as follows: o Before school starts, Staff is contracted to arrive at least 30 minutes before the school buses arrive o After school, Staff is contracted to leave 30 minutes after school buses leave o For the rare condition where Staff will have a conflict with school buses, the Staff is required to use a different parking lot The District will provide training as needed to the Lake Grove Lake Grove Staff and FWPS Transportation. Mike Benzien Executive Director Maintenance & Operations cc: Sally McLean Dr. Danielle Pfeiffer Paul Vang Michael Swartz Executive Director Capital Projects RECEIVED JUL 0 1 2019 CITY OF FEDERAL WAY COMMUNITY DEVELOPMENT Federal Way Public Schools Each Scholar: A voice. A dream. A BRIGHT future. 1211 S. 332"d St, Federal Way, WA 98003 1 p.253.945.5930 I f.253.945.59591 www.fwps.org ©2018 LPD Engineering PLLC 1932 First Ave, Suite 201, Set 1 m M 5eave, wa 9sl01 p, 206.725.1211 F. 206.973.5344 engineering pIIC www.odengineedng.com FEDERAL WAY VUBLIt. 5(-11UULZ) Description June 28, 2019 Figure SCHOOL BUS TURNING EXHIBIT 1A LAKE GROVE ELEM SCHOOL 6 AIN LINK C9MIA C X1 13+00 o S -4 5+00 + 1� 1 I ! 7177r Scale 1 "=30' 7 At> \ �I I 1 I -A 41 349—_ � { T P � •�- I ' � I Iff�iff o � � � lIII II f 3 •`.. � � I II {It Cm a FDCO FEDERAL WAY PUBLIC -SCHOOLS ©2018 LPD Engineering PLLC 1932PstAve, Description June 28, 2019 Figure Suite 201, 211°' SCHOOL BUS TURNING EXHIBIT g.20fi.725.1211 f.206.973S3" LAKE GROVE ELEM SCHOOL 1 B engineering p I I C www.i dengineeringmm 01 A 51 ©2018 LPD Engineering PLLC 1932 First Ave, Suite 201, m m Seattle, WA 98101 p. 206.n5.1211 f. 206-973.530 engineering plk www.�dengineedng.com FEDERAL WAY PUBLIC SC:HUULb Description June 28, 2019 Figure SCHOOL BUS TURNING EXHIBIT LAKE GROVE ELEM SCHOOL I C 0 a ©2018 LPD Engineering PLLC 1932 First Ave, Suite 20m m M 1, WA 98101 p. 206.725.1211 f. 206,973.5344 engineering pIIC www,adengineedng.com rr-L)CKAL VVHT ruDLi%. Description June 28, 2019 Figure SCHOOL BUS TURNING EXHIBIT I D LAKE GROVE ELEM SCHOOL 1k RECEIVED Az� CITY OF Federal Way Ut CITY OF FEDERAL WAY COMMUNITY DEVELOPMENT MASTER LAND USE APPLICATION DEPARTMENT OF COMMUNITY DEVELOPMENT 33325 8`h Avenue South Federal Way, WA 98003-6325 253-835-2607;Fax 253-835-2609 www.ci offederalwa .corn APPLICATION NO(s) Date Project Name Lake Grove Elementary School Property Address/Location 303 SW 308th Street / Federal Wa WA 98023 Parcel Number(s) 0721049180 Project Description Demolish & Replace an existing Elementary School with a newly constructed Elementary School. PI,F.ASE PRINT Type of Permit Required Annexation Binding Site Plan Boundary Line Adjustment Comp Plan/Rezone Land Surface Modification Lot Line Elimination Preapplication Conference Process I (Director's Approval) Process II (Site Plan Review) _X_Process III (Project Approval) Process IV (Hearing Examiner's Decision) Process V (Quasi -Judicial Rezone) Process VI SEPA w/Proj ect SEPA Only Shoreline: Variance/Conditional Use Short Subdivision Subdivision Variance: Commercial/Residential Required Information in§l Family-1 Unit/7,200 SF Zoning Designation Singe ami ow Densit omprehensive lan Designation $2,827,400 Value of Existing Improvements $27,086,400 Value of Proposed Improvements 1 nternational Building Code (IBC): Groups E, B A-3 Occupancy Type Type II-B Construction Type Applicant Name: Federal Way Public Schools Address:1211 South 332nd Street City/State:Federal Way / WA Zip: 98003 Phone:253-945-5930 Fax:253-945-5959 Email:mbenaien Signature: Agent (if different than Applicant) Name: CBRE I Heery Address: 1420 Fifth Avenue, Suite 1700 City/State: Seattle / WA Zip: 98101 Phone:206-835-0473 Fax: None Email: rvefik@fwps.org Signature: Owner Name: Federal Way Public Schools Address: 1211 South 332nd Street City/State: Federal Way / WA Zip:98003 Phone:253-945-5930 Fax:253-945-5959 Email: mbe 'en@fwps.org Signatur Bulletin #003 —January 1, 2011 Page 1 of 1 k:\landouts\1\4aster Land Use Application WASHINt,�ON LAND TITLE ASSOCIATION STANDARD FORM VIGENED POLICY OF TITLE INSURANCE JAi� 10 ��19 PUGET SOUND TITLE INSURANCE COMPANY 705 Third Avenue Seattle 4, Washington hereinafter called the Company, a Washington corporation, for valuable considera- tion, and subject to the conditions and stipulations of this policy, does hereby insure the person or persons named in item 1 of Schedule A, together with the persons and corporations included in the definition of "the insured" as set forth in the conditions and stipulations, against loss or damage sustained by reason of: 1. Title to the estate, lien or interest defined in items 3 and 4 of Schedule A being vested, at the date hereof, otherwise than as stated in item 2 of Schedule A; or 2. Any defect in, or lien or encumbrance on, said title existing at the date here- of, not shown in Schedule B ; or 3. Any defect in the execution of any instrument shown in item 3 of Schedule A, or priority, at the date hereof, over any such instrument, of any lien or en- cumbrance not shown in Schedule B ; provided, however, the Company shall not be liable for any loss, damage or expense resulting from the refusal of any person to enter into, or perform, any contract respecting the estate, lien or interest insured. The total liability is limited to the amount shown in Schedule A, exclusive of costs incurred by the Company as an incident, to defense or settlement of claims here- under. In witness whereof, PUGET SOUND TITLE INSURANCE COMPANY has caused this policy to be authenticated by the facsimile signature of its President, but this policy is not valid unless attested by the Secretary or an Assistant Secretary. PUGET SOUND TITLE INSURANCE COMPANY sy _�� 49,�d� President Attest: As;tc2t Secretary SCHEDULE A .40. 271848 AMOUNT $ 33, 000. 00 DATE Octeber 9, 1963 at 8:30 A.K. PREMIUM $ 159.50 1. INSURED FEDERAL WAY SCHOOL DISTRICT NO. 210, A mmicpal c6rporation 2. TITLE TO THE ESTATE, LIEN OR INTEREST INSURED BY THIS POLICY IS VESTED IN the named insured 3. ESTATE, LIEN OR INTEREST INSURED Fee simple estate 4. DESCRIPTION OF THE REAL ESTATE WITH RESPECT TO WHICH THIS POLICY IS ISSUED That portion of the Southeast 4 of the Northeast 4 of Sectioi ', Township 21 North, Range 4 East W.M., described as follows: Beginning at a paint on the North line of said subdivision which bears South 88° 48132" East, 55.00 feet from the Northwest corner thereof; thence South 1* 21' 07" West, parallel to the West tine of said subdivision, 420.00 feet; thence South 88a48'3'" East, 152.90 feet; thence South 1°21'07" kTest:, 1.35.00 feet; tbance South 88°48'32" East, parail.el. to :he North lane of said subdivision, 669.49 feet; thence ?forth 1°21.'07" East; 555.00 feet to the North Dine of said subdivision; thence alcrrtG said ,North line North88*48' 32" blest, 822-. 39 feet to the point of beginair . Situate in the County of King, State of Washington,. SCHEDULE B DEFECTS, LIENS, ENCUMBRA S AND OTHER. MATTERS AGAINST WHICH THE COMPANY DOES NOT INSURE: 1. Second with assessment known as Tax Lot property. MR GENERAL EXCEPTIONS half o r_)eneral taxes for 1963 in for Forest Fire Protection in the 112, covering the property,herein sum of $428.25, together sum of $1.44; being described and other 1. Encroachments or questions of location, boundary and area, which an accurate survey may disclose; public or private easements not disclosed by the public records; rights or claims of persons in possession, or claiming to be in possession, not disclosed by the public records; material or labor liens or liens under the Workmen's Compensation Act not disclosed by the public records; water rights or matters relating thereto; any service, installation or construction charges for sewer, water or electricity. 2. Exceptions and reservations in United States Patents; right of use, control or regulation by the United States of America in the exercise of powers over navigation; limitation by law or governmental regulation with respect to subdivision, use, enjoyment or oc- cupancy; defects, liens, encumbrances, or other matters created or suffered by the insured; rights or claims based upon instruments or upon facts not disclosed by the public records but of which rights, claims, instruments or facts the insured has knowledge, 3. General taxes not now payable; matters relating to special assessments and special levies, if any, preceding the same becoming a lien (End of Schedule B) M CONDITIONS AND STIPULATIONS 1. The Company shall have the righ-' )and will, at its own expense, defend the in; with respect to all demands and legal proceedings founded upon a claim of ..e, encumbrance or defect which existed or is elaimed to have existed prior to the date hereof and is not set forth or excepted herein; reserving, however, the option at any time of settling the claim or paying the amount of this policy in full. In case any such demand shall be asserted or any such legal proceedings shall be instituted the in- sured shall at once give notice thereof in writing to the Company at its home office and, if the insured is a party to such legal proceedings, secure to the Company, within ten days after service of first process upon the insured, the right to defend such legal proceedings in the name of the insured so far as necessary to protect the insured, and the insured shall render all reasonable assistance in such defense. If such notice shall not be given, or -the right to defend secured, as above provided, then all liability of the Company with regard to the subject matter of such demand or legal proceedings, and any expense incident thereto, shall terminate; provided, however, that failure to give such notice shall in no case prejudice the claim of the insured unless the Com- pany shall be actually prejudiced by such failure and then only to the extent of such prejudice. 2. In the event of final judicial determination by a court of competent jurisdiction, under which the estate, lien or interest in- sured is defeated or impaired by reason of any adverse interest, lien or encumbrance not set forth or excepted herein, claim may be made as herein provided. A statement in writing of any loss or damage, for which it is claimed the Company is liable, shall be furnished to the Company at its home office within sixty days after such loss or damage shall have been ascertained. No right of action shall accrue with respect thereto until thirty days after such statement shall have been furnished and no recovery shall be had unless an action shall have been commenced thereon within one year after the expiration of said thirty days. Any rights or defenses of the Company against a named insured shall be equally available against any person or corporation who shall become an insured hereunder as successor of such named insured. 3. The Company may at any time pay this policy in full, whereupon all liability of the Company shall terminate. Every pay- ment made by the Company, exclusive of costs incurred by the Company as an incident to defense or settlement of claims hereunder, shall reduce the liability of the Company by the amount paid. The liability of the Company shall in no case exceed the actual loss of the insured and costs which the Company is obligated to pay. When the Company shall have paid a claim here- under it shall be subrogated to all rights and remedies which the insured may have against any person or property with respect to such claim, or would have if this policy had not been issued, and the insured shall transfer all such rights to the Company. If the payment made by the Company does not cover the loss of the insured, such subrogation shall be proportionate. Whenever the Company shall be obligated to pay a claim under the terms of this policy by reason of a defect in the title to a portion of the area described herein, liability shall be limited to the proportion of the face amount of this policy which the value of the defective portion bears to the value of the whole at the time of the discovery of the defect, unless liability is otherwise specifi- cally segregated herein. If this policy insures the lien of a mortgage, and claim is made hereunder, the Company may pay the entire indebtedness and thereupon the insured shall assign to the Company the mortgage and the indebtedness secured thereby, with all instruments evidencing or securing the same, and shall convey to the Company any property acquired in full or partial satisfaction of the indebtedness, and all liability of the Company shall thereupon terminate. If a policy insuring the lien of a mortgage is issued simultaneously with this policy and for simultaneous issue premium as provided in rate schedule, any payment by the Company on said mortgage policy with respect to the real estate described in Schedule A hereof shall reduce pro tanto the liability under this policy. All actions or proceedings against the Company must be based on the provisions of this policy. Any other action or actions or rights of action that the insured may have or may bring against the Company with respect to serv- ices rendered in connection with the issuance of this policy, are merged herein and shall be enforceable only under the terms, condi- tions and limitations of this policy. 4. The following terms when used in this policy mean: (a) "named insured": the persons and corporations named as insured in Schedule A of this policy; (b) "the insured": such named insured together with (1) each successor in ownership of any in- debtedness secured by any mortgage shown in Item 3 of Schedule A, (2) any owner or successor in ownership of any such indebt- edness who acquires title to the real estate described in Item 4 of Schedule A, or any part thereof, by lawful means in satisfaction of said indebtedness or any part thereof, (3) any governmental agency or instrumentality which insures or guarantees said indebtedness or any part thereof, and (4) any person or corporation deriving an estate or interest in said real estate as an heir or devisee of a named insured or by reason of the dissolution, merger, or consolidation of a corporate named insured; (c) "date hereof"": the exact day, hour and minute specified in Schedule A; (d) "public records": records which, under the recording laws, impart constructive notice with respect to said real estate; (e) "home office": the office of the Company at the address shown herein. 49 y;� .:��vti-~.,r _: "_= c'o--=r_:: .: _� = -°-_ ►.ens=n.�:�t+% F • h 772 'i 'i M 1 Ln a `~ FEDER .. 1JtilAY SCHOOL DIS1 ICT 210 SITE # 11 LEGAL DESCRIPTION LAKE GROVE ELEMENTARY SCHOOL That Portion of the Southeast Quarter of the Northeast Quarter of Section 7; T21N, ME, W.M. described as follows: Beginning at a Point on the North Line of Said Subdivision which bears S88048'32"E, 55.00 feet from the Northwest Corner thereof; thence S1021'07"W, Parallel to the West Line of Said Subdivision, 420.00 feet; Thence S88o48'32"E,152.90 feet; Thence S1021'07"W, 135.00 feet; Thence S88048'32"E, Parallel to the North Line of Said Subdivision, 669.49 feet; Thence N1021'07"E, 555.00 feet to the North Line of Said Subdivision; Thence along Said North Line N88048'32"W, 822.39 feet to the Point of Beginning. COMMON ADDRESS 303 S.W. 308th, Federal Way, Washington l � ��; !fir'- . _ _ _ .� �• _ _ � . P .f '� ■� tA.fJj�$}• � `-r ��'u . � fir ... * -' ' �. w i . rr�• r Y .:a.' Legend Lake Grove Elementary Schoo 225 Foot Buffer Wetlands Streams Landslide Hazard Areas r �r ter', ? ]� / .'S+ • �.... Lakes OP as Erosion Hazard Ar Floodplains y •r� � f T . f'r? . Wellhead _ • �r x� .. `• _BMW, kme t=Mw•carmtaivaMC- -Iww;unusr.�a, ill IM"M•97 = ft., TENW Transportation Engineering North Wes! RECEIVED MEMORANDUM DATE: November 16, 2018 TO: Robert Evans, PE, Capital Projects Manager CC: licasey Moore, Project Manager, FWPS Support Services Center FROM: Michael Read, PE, Principal, TENW SUBJECT: Federal Way School District - Response to Comments Lake Grove, Mirror Lake, and Wildwood Elementary School TENW Project No. 3623 JAN 10 2019 CITY OF FEDERAL WAY COMMUNITY DEVELOPMENT This memorandum provides a response to the October 23, 2018 letter titled "Responses to Environmental Checklists for Potentially Proposed Federal Way Elementary Schools" from Robert "Doc" Hansen, Planning Manager for the City of Federal Way. LAKE GROVE ELEMENTARY SCHOOL. The following traffic comments by Soma Chattopadhyay related to Lake Grove Elementary School of the Federal Way School District have been addressed: 1. City's Adopted LOS Standard 2. Size Clarification 3. Traffic Impact Fee Calculation 4. Queuing Analysis and Bus Turning Diagram 5. Sight Distance Issues - Realign eastern driveway with 3rd Ave SW or 2nd Ave SW 6. School Safe Walk Route Response 1: The City's adopted LOS standard is 1.2 for signalized intersections and 1.0 for unsignalized intersections. All study intersections and site driveway intersections meet the City's adopted LOS standards. Response 2: The existing gross floor area of 51,238 square feet with a 450-student capacity is correctly identified in the TIA. The 450 students is the capacity at the elementary school and is therefore, a conservative estimate. Response 3: Per the traffic impact fee rate of $2.00 per square foot for an elementary school, the proposed development would need to provide a fee of $24,704.00 based on a net increase of Transportation Planning I Design I Traffic Impact & Operations PO Box 65254, Seattle, WA 98155 1 Office (206) 361-7333 Federal Way School District - Lake Grove Elementary School Response to Comments 12,352 square feet (51,238 square feet existing and 63,590 square feet future). The TIA has been updated per this correction. Response 4: Please see the "Queuing Analysis and Student Pick-Up/Drop-Off Loading Areas" section in the updated TIA. Please note that: School bus turning radiuses at site driveways and adjacent intersections for Lake Grove Elementary School will be provided by other Team members. Response 5: The sight distance identified in the Existing Conditions memo at Intersection #5 — SW 308th Street / East Driveway is based on a 260-foot minimum sight distance to the east. Per the photo provided in Attachment A, driver entering sight distance to the east is a maximum of 300 feet. Therefore, sight distance is met for a 25 mph design speed on SW 308rh Street at the East Driveway. Response 6: Please see the "School Safe Walk Route" section in the updated TIA. MIRROR LAKE ELEMENTARY SCHOQI The following traffic comments by Sarady Long related to Mirror Lake Elementary School of the Federal Way School District have been addressed: 1 . TIA Engineering Stamp 2. City's Adopted LOS Standard 3. School Safe Walk Route, Queuing Analysis, School Zone Flasher Enhancement, School Bus Turning Radius at Driveways and Adjacent Street Intersections 4. Neighborhood Impacts Related to Drop Off and Loading Locations 5. Recommended Improvements in TIA and New School Layout Conflicts 6. No Parking Signs on Adjacent Neighborhood Streets 7. Update TIA per Above Comments KPA Environme t I Checklist - Notice of Consultation SEPA Environmental Checklist of 62,550 SF is not consistent with project description of 60,322 SF in SEPA Checklist. 7. Checklist Item # 14. Transportation (b) - Transit Stops update 8. Checklist Item #14. Transportation (d) - Pedestrian path and roadway improvements including right-of-way dedication. On -site improvements for safe walking route. 9. Checklist Item # 14. Transportation (f) - Trip generation clarification. 10. Checklist Item # 14. Transportation (h) — Traffic impact fee assessment. Response 1: The TIA has been updated with an engineering stamp by Michael Read, PE. (V TENW November 16, 18 Page 2 r Federal Way School District -Lake Grove Elementary School Response to Comments Response 2: The City's adopted LOS standard is 1 .2 for signalized intersections and 1-0 for unsignalized intersections. All study intersections and site driveway intersections meet the City's adopted LOS standards. Response 3: Please see the "School Safe Walk Route" section in the updated TIA. Please see the "Queuing Analysis and Student Pick-Up/Drop-Off Loading Areas" section in the updated TIA. A school zone flasher enhancement should be provided on 81h Avenue S and SW 3081h Street. This has been added in the "School Safe Walk Route" section in the updated TIA. Please note that: School bus turning radiuses at site driveways and adjacent intersections for Lake Grove Elementary School will be provided by other Team members. Response 4: Please see the "Queuing Analysis and Student Pick-Up/Drop-Off Loading Areas" section in the updated TIA. Response 5: The new school layout was created after the Existing Conditions memorandum was completed. Figure 4 in the Existing Conditions memorandum document recommendations only. Recommendations do not necessarily always have to be implemented when creating the new school layout. The new school layout (site plan) should be used when analyzing traffic impacts. Response 6: Figure 4 in the Existing Conditions memorandum document recommendations only. Recommendations do not necessarily always have to be implemented. However, to accommodate the City, Figure 4 of the Existing Conditions memorandum for Mirror Lake Elementary School has been updated to remove the "no parking signs" and is provided as Attachment B. Response 7: The TIA has been updated to address the City's comments above. Response 8: The checklist has been updated to reflect closest transit stop locations. Response 9: The checklist has been updated to reflect pedestrian path and roadways improvements and safe walk route. Response 10: The trip generation is correct, and is based on a conservative account as current school buildings have a capacity of 450 students, and the new buildings will be sized for 600 students. Response 1 1: The checklist has been updated. Per the traffic impact fee rate of $2.00 per square foot for an elementary school, the proposed development would need to provide a fee of $17,574.00 based on a net increase of 8,787 square feet (54,803 square feet existing and 63,590 square feet future). The TIA has been updated per this correction. VTENW November 16, 18 Page 3 Federal Way School District - Lake Grove Elementary School Response to Comments WILDWOOD ELEMENTARY SCHOOL The following traffic comments by Erik Preston related to Wildwood Elementary School of the Federal Way School District have been addressed: 1 . Checklist Item #14. Transportation (b) - Transit Stops update 2. Checklist Item # 14. Transportation (d) - Pedestrian path and roadway improvements including right-of-way dedication. On -site improvements for safe walking route. 3. Checklist Item #14. Transportation (f) -Trip generation. 4. Checklist Item # 14. Transportation (h) — Traffic impact fee assessment. 5. TIA Engineering Stamp 6. City's Adopted LOS Standard 7. Daily Traffic Volumes Clarification 8. Safe Walk Route 9. Neighborhood Impacts Related to Drop Off and Loading Locations 10. No Parking Signs on Adjacent Neighborhood Streets 1 1 . Speed Bumps — Mini -Roundabout Installation 12. Update TIA per Above Comments 13. Traffic Impact Fee Calculation Response 1: The checklist has been updated to reflect closest transit stop locations Response 2: The checklist has been updated with correct street names for S 300ih Street and classification with Type-U applicable roadway improvements. The checklist has also been updated with maintenance and improvements to the pedestrian paths on the south side of the property. Response 3: The trip generation is correct, and is based on a conservative account as current school buildings have a capacity of 450 students, and the new buildings will be sized for 600 students. The l Orh Edition of the ITE Trip Generation Manual for Land Use 520 was used. Although it has been requested that gross floor area be used to determine trip generation, the use of students is a more conservative approach. With a net new increase of 13,208 square feet, the proposed development would only generate a net increase of about 90 new trips during peak arrival times (AM Peak Hour of the Generator) and 42 new trips during peak dismissal times (PM Peak Hour of the Generator), with both numbers being less than what was identified in the TIA. Response 4: The checklist has been updated. Per the traffic impact fee rate of $2.00 per square foot for an elementary school, the proposed development would need to provide a fee of $26,416.00 based on a net increase of 13,208 square feet (50,382 square feet existing and 63,590 square feet future). The TIA has been updated per this correction. Response 5: The TIA has been updated with an engineering stamp by Michael Read, PE TEN W Page November4 Federal Way School District - Lake Grove Elementary School Response to Comments Response 6: The City's adopted LOS standard is 1.2 for signalized intersections and 1.0 for unsignalized intersections. All study intersections and site driveway intersections meet the City's adopted LOS standards. Response 7: Figures 3 and 6 in the TIA have updated daily traffic volumes. Response 8: Please see the "School Safe Walk Route" section in the updated TIA. Please see the "Queuing Analysis and Student Pick-Up/Drop-Off Loading Areas" section in the updated TIA. Please note that: School bus turning radiuses at site driveways and adjacent intersections for Lake Grove Elementary School will be provided by other Team members. Response 9: Please see the "Queuing Analysis and Student Pick-Up/Drop-Off Loading Areas" section in the updated TIA. Response 10: Figure 4 in the Existing Conditions memorandum document recommendations only. Recommendations do not necessarily always have to be implemented. However, to accommodate the City, Figure 4 of the Existing Conditions memorandum for Wildwood Elementary School has been updated to remove the "no parking signs" and is provided as Attachment C. Response 1 1: Figure 4 in the Existing Conditions memorandum document preliminary recommendations only. To address City comments, Figure 4 of the Existing Conditions memorandum for Wildwood Elementary School has been updated to remove the "speed bumps" recommendation and is provided as Attachment C. The intersection control at each site driveway intersection onto S 300ih Street has been updated to roundabouts, and therefore, the LOS has been updated. Please see the Site Access and Safety Issues updates and LOS results with the project in 2020 in the updated TIA. Response 12: The TIA has been updated to address the corrections identified. Response 13: Per the traffic impact fee rate of $2.00 per square foot for an elementary school, the proposed development would need to provide a fee of $26,416.00 based on a net increase of 13,208 square feet (50,382 square feet existing and 63,590 square feet future). The TIA has been updated per this correction. If you have any questions regarding the information presented in this memo, please call me at j206j 361-7333 x 101 or mikeread@tenw.com. G TENW NovembePage 5 Attachment A Lake Grove Elementary School Entering Sight Distance .y a� 4. k l M a Attachment B Mirror Lake Elementary Schoo Existing Conditions Figure 4 - Recommendations e-k Keep exit only. ay not be possible if unknown residential or other restrictions :1 here. Would need to make -this two-way all the way up to south parking lot area. ILI- P-.'. _ x� rm. vide traffic cones.anc signs for buses only. Install One -Way Exit, Do Not Enter sign. ' �'E Install Crosswalk and^' Ns. _I Provide as a Crossing o"N Guard Location. - a - P 'Ni '� - Lot" Extend the existing Loading _ _ - { Area by Creating a New -. - ` I ■ - Parking Lot with a Student Widen and reconstruct this y Pick -Up and Drop -Off Area. with Parking Lot with a Pick -Up Make Sure Parents Pull and Drop -Off Area. Forward. Construct sidewalks Construct and and crosswalks where: crosswalks where necessary. Remove existing necessary' portables. Construct sidewalks for students to walk on. .. ------------- Widen the existing loading area for lanes so vehicles , �; ayiaG • wyr. u:u+ •� ��� can easily get out of the loading lane when they pick up and drop off students. This will improve Keep enter only. f i• y traffic flow. CD } @ I (Not to Scale) Figure 4 Federal Way N Mirror lake Elementary School School District T E W Mirror Lake Elementary Arrival and Dismissal Period School Proposed Recommendations Existing Conditions Attachment C Wildwood Elementary School Existing Conditions Figure 4 - Recommendations Provide Crossing Guards in the AM and PM. Add Traffic Cones along this section to prevent vehicles from parking too close to the intersection. 3tic::a y CD (Not to Scale) Figure 4 Federal Way Wildwood Elementary School School District T E N W Wildwood Elementary Arrival and Dismissal Period School Proposed Recommendations Existing Conditions '�TENW Transportation Engineering NorthWest MEMORANDUM DATE: November 16, 2018 r=' V�o�!AryY, TO: Robert Evans, PE, Capital Projects Manager 7i CC: Casey Moore, Project Manager • r ?�cr� FWPS Support Services Center �+ 0,0'•. P P d N' , s;;�NAL• FROM: Michael J. Read, PE, Principal TEN W 1 EXPIRES 2 t 28/2019 SUBJECT: Federal Way School District — Lake Grove Elementary School Traffic Impact Analysis TENW Project No. 3623-3 This memorandum summarizes a traffic impact analysis for the proposed renovation of Federal Way School District's Lake Grove Elementary School located at 303 SW 308th Street in Federal Way, WA. This memo includes a project description, a description of existing transportation conditions within the immediate site vicinity, methodology used to derive the trip generation estimate, trip distribution, traffic operational analysis of key off -site intersections and site driveway intersections under cumulative impacts, and identification of any transportation mitigation measures to offset traffic impacts. Project Description The proposed renovation of Federal Way School District's Lake Grove Elementary School is located at 303 SW 308th Street in Federal Way, WA. A project site vicinity map is shown in Figure 1 . For the purposes of this analysis, year 2020 was the horizon year assumed to evaluate cumulative traffic impacts. The existing gross floor area built at the Lake Grove Elementary School comprises of approximately 51,238 square -feet (including the main building and portable structures) and serves approximately 450 students. The proposed gross floor area of the new school is approximately 63,590 square -feet with a student capacity to serve up to 600 students. Therefore, there would be a net increase of approximately 12,352 square -feet and 150 students in student -capacity with the proposed renovation. Transportation Planning 1 Design 1 Traffic Impact & Operations PO Box 65254, Seattle, WA 98155 1 Office (206) 361-7333 Federal Way School District— Lake Grove Elementary School 303 SW 30811 St, Federal Way, WA Traffic Impact Analysis in CDh Q i Co SW 304th St S 304th St S 304th PI S 305th St S 305th St v�'r m > a H h� �' V), �' rn h S 306th St ^_ Q> Q I j V) m Q> ° m LI L CI Y ?� .'� Q LO > 4 N C S 307th St _ r y N j SW 308Zh St & 3081h St I take Grove Elementary N a School a CL Q i d o Y S''31D9th St L F o o SW 310th PI co ti t a a J 0 5W 3�yh Si S 312th St m Q 7SWt St SW 313Ih Ct )Not to Scale) Federal Way T E N W Figure 1 School District Project Site Vicinity Lake Grove Elementary School Existing Conditions VTENW page 2 November 16, 2018 Federal Way School District- Lake Grove Elementary School 303 SW 3081h St, Federal Way, WA Traffic Impact Analysis Existing site access is provided via four site driveways onto SW 3O8th Street. Proposed site access would be provided via two existing site driveways onto SW 3O8ih Street, one accessing the west parking lot and the other accessing the east parking lot. These site driveways would be converted to full access site driveways. The existing two center site driveways onto SW 3O8ih Street would be removed. Student pick-up/drop off would continue to be provided via the west parking lot. Bus pick-up and drop-off would be relocated to the east parking lot. The renovated west parking lot would provide 1 1 visitor parking stalls and the renovated east parking lot would provide 49 staff parking stalls. As part of the project, roadway frontage improvements would be required along SW 3O8th Street. A conceptual site plan of the project is illustrated in Figure 2. Existing Transportation Conditions This section includes an inventory of existing roadway conditions, key intersections in the site vicinity, existing daily and peak hour traffic volumes, intersection levels of service, nonmotorized facilities and planned roadway improvements. Roadway Conditions The following paragraphs describe existing arterial roadways that would be used for site access. Roadway characteristics are described in terms of number of lanes, posted speed limits, shoulder types and widths. SW 3O8th Street is a two-lane minor collector. Adjacent to Lake Grove Elementary School, the roadway travel width is approximately 21 feet with 3- to 4-foot paved shoulders on the north side of the street and 9- to 10-foot paved shoulders with 1 1- to 13-foot gravel shoulders on the south side of the street. West of 4th Avenue SW / West Driveway, 7-foot paved shoulders are provided on the north side of the street, and 1 /2—foot paved shoulders, curb and a 5-1 /2 foot paved pedestrian pathway are provided on the south side of the street. East of 2nd Avenue SW, the roadway consists of approximate 8-foot paved shoulders on the north side of the street, an approximate pavement width of 34-foot with curb and a 7-foot paved pedestrian pathway on the south side of the street. The speed limit is posted at 25 mph with a 20 mph flashing posted speed during school arrival and dismissal periods. A vehicle speed survey was conducted in ,June 2018 by lclax Data Solutions on SW 3O8th Street between 1st PI SW and 2nd Avenue SW (further west of the East Driveway for Lake Grove Elementary School), with a 5Oth percentile speed of 21 mph, 85th percentile speed of 25 mph and a 95th percentile speed of 29 mph in the eastbound direction, and in the westbound direction, a 5Oth percentile speed of 22 mph, 85th percentile speed of 26 mph and a 95th percentile speed of 29 mph. 8th Avenue SW is a two-lane unchannelized minor collector. The total pavement width is approximately 26 feet west of SW 3O8th Street with approximate 4-foot shoulders on the south side of the street and open ditches on both sides the street. East of SW 3O8th Street, the total pavement width is approximately 23 feet with 6- to 7-foot gravel shoulders on both sides the street. The posted speed limit is 25 mph. GeTE N W page 3 November 16, 2018 Federal Way School District - Lake Grove Elementary School 303 SW 30811 St, Federal Way, WA Traffic Impact Analysis iy I, • 1 - 0 '�� • -1a i�ir d m � o iS ' i MS 3AV aNZ Full -t f .3 It J - East Porkina Lot. 1 oi: 'S - — Bus Pick -Ur) �r •� �'� Dfop MS 3AV aLIE i`: ga li -i • i-_•, Wes, POACH L., -------- stuftnl PiCiC-upl .. �3f3. Full NS 3AVHl4 ACX4ssCrivCway (Not to Scale) Federal Way 61aT E N W Figure 2 School District Conceptual Site Plan Lake GrSchoolmentary Traffic Impact Analysis TTENW page 4 November 16, 2018 1 Federal Way School District - Lake Grove Elementary School 303 SW 30811 St, Federal Way, WA Traffic Impact Analysis 4th Avenue SW is a two-lane unchannelized roadway with 7-foot gravel shoulders on the west side of the street and 4-foot gravel shoulders on the south side of the street. The total pavement width is approximately 25 feet. The speed limit is posted at 25 mph. 31`d Avenue SW is a two-lane unchannelized roadway with 8- to 1 1-foot gravel shoulders on the west side of the street and approximate 7-foot gravel shoulders with open ditches on the south side of the street. The total pavement width is approximately 26 feet. The posted speed limit is 25 mph. 1 st Avenue S is a minor arterial with two lanes north of SW 3O8th Street and two lanes with a two-way center left -turn lane south of SW 3O8th Street. North of SW 3O8ih Street, the pavement width between shoulder lines is approximately 30 feet with a 13-foot travel lane in the southbound direction, and 1-foot paved shoulders on the west side of the street and 3-foot paved shoulders on the east side of the street. South of SW 3O8th Street, the pavement width between shoulder lines is approximately 35 feet with 10-foot paved shoulders and curbs, gutters and sidewalks on the west side of the street and 4-foot paved shoulders on the east side of the street. The speed limit is posted at 25 mph. Traffic Study Intersections The following intersections were analyzed during the AM and PM peak hour: 1 . SW 3O8th Street / 8rh Avenue SW 2. SW 3O8ih Street / 4rh Avenue SW / West Driveway 3. SW 3O8ih Street / West Driveway - 2 4. SW 3O8'h Street / 31d Avenue SW / Center Driveway 5. SW 3O8ih Street / East Driveway 6. SW 3O8'h Street / 1 si Avenue S Existing Daily and Peak Hour Traffic Volumes Peak hour traffic volumes represent the highest hourly volume of vehicles passing through an intersection during a typical 7-9 AM and 4-6 PM weekday peak period. Average weekday daily traffic counts and peak period turning movement counts were conducted during the AM and PM peak hour in June 2018 by lolax Data Solutions during the 7-9 AM, 4-6 PM periods at off -site study intersections and 2-6 PM period at school driveway intersections. Figure 3 summarizes existing daily, AM and PM peak period turning movements at the study intersections. Traffic counts are provided in Attachment A. During the p.m. peak hour, please note that off -site study intersections (#1 and #6) were analyzed based upon the weekday p.m. peak hour of adjacent street traffic (typical 4 to 6 p.m. peak period) and driveway study intersections (#2, #3, #4 and #5) were analyzed based upon the weekday p.m. peak hour of the generator for the proposed project (peak dismissal time for one hour between 3:00 to 4:15 p.m. depending upon the site driveway intersection). VTEN W page 5 November 16, 2018 H K > C-SW M8th SU L wQs!lVQwll • i CO — SW 3QSthS1/4th Ave SW! j 3C West Drvewo F 53 (28) a VL 4 (1) 11 (8) I7I Iol 13) r -4— 50120) sw r ?rll.. cf I f (44) 65 --P- 3 3 4 1014--'Of � t 120)7—,A 3 M 101 (511 48 [j 21 5 13 S (181 14 L (12) I01 (8) > 'I > ¢ ¢ b• Lr) S307thSt j 5W 308th St i SW 308th S1/81h Ave SW 4 (9) 161 [32 5 I) E- 12 (91 J t, �8(13) 1113— �� f (251 13 —1 c 7 30 4 (11 8 la 10) 128) 1241 eth St ct Federal Way School District - Lake Grove Elementary School 303 SW 30811 St, Federal Way, WA Traffic Impact Analysis SW 3U81h Sf/3rd Ave 5W! F�sl Drivewa 141 �-. 11 (4) 131 1461 { F 47 136) i 25 (351 i w w r 1019� g� t 9 0 14 119)17� (7) (1) IIB) Elementary School J SW� co ! SW 3 Sw 308th SI/East D(vewoy F 73 (68) Rs' a I 142) 62-0' 12 46 (41 136) I UI 1,400 N I 3081h S! SW 3081h St/ I st Ave S 2201 (4) 213) St l8) )370 7 -*— 4 (3) J 1, i a 0- 30 (25) 5 fh Sf w NO, (l3 10)1 (5) 2 45 299 33 (661 61 --4k _ (62) 1213) 119) S 312th St Legend 45 PM Peak Hour Traffic Volumes (65) AM Peak Hour Traffic Volumes 5,000 Daily Traffic Volumes ,�llosc❑le) Federal Way Figure 3 School District 1i9 T E NW2018 Existing Daily, AM & PM Lake Grove Elementary Peak Hour Traffic Volumes Schaal Traffic Impact Analysis �TENW page 6 November 16, 2018 1 4�- . Federal Way School District- Lake Grove Elementary School 303 SW 30811 St, Federal Way, WA Traffic Impact Analysis Existing Intersection Levels of Service Intersection levels of service (LOS) analyses were conducted at the study intersections during the weekday AM and PM peak hour of 2018 existing conditions. LOS refers to the degree of congestion on a roadway or intersection. It is a measure of vehicle operating speed, travel time, travel delays, and driving comfort. A letter scale from A to F generally describes LOS. At signalized intersections, LOS A represents free -flow conditions -motorists experience little or no delays, and LOS F represents forced -flow conditions -motorists experience an average delay in excess of 80 seconds per vehicle. The LOS reported for signalized intersections represents the average control delay per vehicle entering the intersection. The LOS reported at stop -controlled intersections is also based on the average control delay (sec/veh) and is reported for each movement. Therefore, the reported LOS at unsignalized intersections does not represent a measure of the overall operations of the intersection. LOS calculations for both signalized and stop -controlled intersections were calculated using the methodologies and procedures outlined in the 2010 Highway Capacity Manua/ IHCM), Special Report 209, Transportation Research Board (TRB). Table 1 outlines the LOS criteria for Signalized and unsignalized intersections based on these methodologies. The City of Federal Way's LOS standard is a v/c ratio of 1.2 for signalized intersections and 1 .0 for unsignalized intersections. Existing AM and PM peak hour LOS analyses are summarized in Tables 2 and 3. As shown, all intersections operate at LOS C or better with a v/c ratio under 1 .0 during the AM and PM peak hour under 2018 existing conditions. Detailed LOS summary worksheets are included in Attachment B. Table 1 Level of Service Criteria for Intersections Signalized Intersection Unsignalized Intersection Level of Service Average Delay Range (sec)_ Delay Range fsec _ A < 10 < 10 B >10fo<_20 >10fo<15 C > 20 to <- 35 > 15 to < 25 D >35to<55 >25to<35 E >55to580 >35to<50 F > 80 > 50 Source: "Highway Capacity Manual", Special Report 209, Transportation Research Board, 2010. T TEN W page 7 November 16, 2018 Federal Way School District - Lake Grove Elementary School 303 SW 3081h St, Federal Way, WA Traffic Impact Analysis Table 2 2018 Existing AM Peak Intersection Levels of Service 5tudy Intersection LOS Delay sec V/C Ratio Unsfgndized Intersections #1 -SW 308th St / 8th Ave SW AWS A 7.4 0.23 #2 - SW 308th St / 4th Ave SW / West Dr EB Left -- - -- #3 - SW 308Ih St / West Driveway - 2 #4 - SW 308th St / 3rd Ave SW / Center Dr #5 - SW 3081h St / East Driveway #6 - SW 308th St / l st Ave S WB Left A 7.6 0.01 NB A 9.9 0.05 SB B 10.1 0.02 WB Left A 7.5 0.01 WB Left A 7.6 0.05 NB B 10.1 0.07 SB B 11.3 0.02 NB A 9.3 0.08 EB B 10.4 0.13 WB C 18.0 0.11 NB Left A 7.9 0.05 SB Left A 7.8 0.00 Source: "Highway Capacity Manual", Special Report 209, Transportation Research Board, 2010. Table 3 2018 Existina PM Peak Intersection Levels of Service Study Intersection LOS Delay (sec) V/C Ratio UnsLoalized Intersections #1 - SW 308th St / 8rh Ave SW AWS A 7.3 0.14 #2 - SW 308th St / 4th Ave SW / West Dr EB Left A 7.8 0.00 #3 - SW 308th St / West Driveway - 2 #4 - SW 308th St / 3rd Ave SW / Center Dr #5 - SW 308th St / East Driveway #6 - SW 308th St / I st Ave S WB Left A 8.1 0.00 NB B 13.3 0.10 SB B 12.8 0.06 WB Left A 7.9 0.01 NB B 10.8 0.02 EB Left A 7.7 0.01 WB Left A 8.0 0.03 NB B 12.6 0.06 SB B 12.0 0.03 NB B 10.0 0.10 EB B 12.0 0.13 WB C 24.2 0.17 NB Left A 8.2 0.04 SB Left A 8.0 0.01 Source: "Highway Capacity Manual", Special Report 209, Transportation Research Board, 2010. TTENW page 8 November 16, 2018 Federal Way School District - Lake Grove Elementary School 303 SW 30811 St, Federal Way, WA Traffic Impact Analysis Nonmotorized Facilities Paved pedestrian pathways are located on SW 308th Street, west of 4rh Avenue SW and east of the East Driveway. Marked crosswalks are located along all school study intersections of SW 308th Street at the north, south and east legs of the 4rh Avenue SW / West Driveway, the south leg of the West Driveway - 2, and the north and west legs of 3rd Avenue SW / Center Driveway. Speed bump crosswalks are provided on SW 308th Street on the east leg of its intersection with 4rh Avenue SW / West Driveway and on the west side of its intersection with 2nd Avenue SW. Planned Transportation Improvements No planned transportation capacity improvements impacting Lake Grove Elementary School based were identified in the City of Federal Way's 2018-2023 Transportation Improvement Program. Traffic Impact Analysis The following section describes projected future baseline traffic growth, new trips generated by the proposed development, distribution and assignment of new project trips, intersection level of service and daily traffic volume impacts, nonmotorized impacts, site access, safety and circulation issues, and identification of transportation mitigation to offset impacts. 2020 Baseline Traffic Volumes Full buildout of the project is anticipated for the year 2020. Existing traffic counts estimated in 2018 were factored by 3 percent per year to estimate daily, a.m. peak hour and p.m. peak hour traffic volumes under 2020 baseline conditions without the project. Future traffic volume estimates are provided in Attachment C. Project Trip Generation Per published trip generation rates within the Trip Generation Manual, 10th Edition, 2017, Institute of Transportation Engineers (ITE), for Land Use Code 520 - Elementary School, there is no correlative basis to derive vehicle trip generation based on changes in gross floor area, but better evidence of correlation on daily trips and significantly higher number of studies based on student population. Based on TENW's extensive experience in reviewing K-12, private schools, and numerous community colleges throughout the Pacific Northwest, the best correlative predictor of increase traffic demand is student enrollment at school institutions. As such, as shown in Table 4, based on the net increase of approximately 150 students the net increase in vehicle trips on a daily basis is estimated at 284 daily trips, with approximately 98 new trips generated during peak arrival periods (AM Peak Hour of Generator), 51 new trips generated during peak dismissal periods (PM Peak Hour of Generator), and 26 new vehicle trips during the p.m. peak hour of adjacent street traffic (i.e., the worse -case scenario). T E N W page 9 November 16, 2018 1__1%1 Federal Way School District - Lake Grove Elementary School 303 SW 30811 St, Federal Way, WA Traffic Impact Analysis Table 4 Lake Grove Elementary School Trip Generation Summary Time Period In Out Total Weekday Daily 142 142 284 Weekday AM Peak Hour of Generator 53 45 98 Weekday PM Peak Hour of Generator 23 28 51 Weekday PM Peak Hour of Adjacent Street Traffic 12 14 26 Source: ITE Trip Generation Manual, 101h Edition, 2017. Trip Distribution and Assignment Project trip distribution is based upon traffic counts that were conducted in ,June 2018 during the a.m. and p.m. peak hour at all off -site and site driveway study intersections. Generally, distribution and assignment of project trips were assumed as follows: ➢ 29 percent north via 8th Avenue SW, 6th Avenue SW, 4ih Avenue SW, 2nd Avenue SW and 1 st Avenue SW; ➢ 48 percent south via 81h Avenue SW, 7h Place SW and 1 st Avenue SW; ➢ 20 percent west via SW 308ih Street; ands ➢ 3 percent east via SW 3086 Street. Figure 4 illustrates trip distribution and Figure 5 shows the daily, a.m. peak hour and p.m. peak hour trip assignment at the study intersections during the 2020 horizon year. Figures 6 and 7 summarize daily, a.m. peak hour and p.m. peak hour traffic volume impacts of the proposed renovation of Federal Way School District's Lake Grove Elementary School project in 2020. Intersection Level of Service and Daily Traffic Volume Impacts Tables 5 and 6 summarize level of service impacts in 2020 assuming full buildout of the proposed renovation of Federal Way School District's Lake Grove Elementary School project. As shown, all study intersections are projected to operate at LOS C or better with a v/c ratio under 1 .0 during the a.m. peak hour and at LOS D or better with a v/c ratio under 1 .0 during the p.m. peak hour with or without the project in 2020. Detailed LOS summary worksheets are included in Attachment B. Please note that site driveway Intersections #3 and #4 will be removed as part of the proposed project and were therefore, not analyzed under 2020 future conditions. Daily traffic volumes would increase by about 140 vehicles with the project in 2020 on SW 308th Street east of the school. o*TENW page 10 November 16, 2018 1 i Federal Way School District - Lake Grove Elementary School 303 SW 308'h St, Federal Way, WA Traffic Impact Analysis S304th St 3 S 305th St >I Q N N S 306th St ^. + Q Q S 307tn St _ - -- -- L a t v SW 313fh Ct SW 304th St S 305th St School S 304th PI 1 V 5 3g9th St SW 310th PI I i S 312th St N a� Q SW 3131h St I 9 lo-ra+ to S(;[ilt3! Federal Way V9 TEN W Figure 4 School District Project Trip Distribution LakeGrove Traffic Impact Analysis TTENW Fu jc i i November 16, 2018 Federal Way School District - Lake Grove Elementary School 303 SW 308Ih St, Federal Way, WA Traffic Impact Analysis H LO N N f SW 304th St W Sw 3081h Sf/Easl Driveway 41h PI S 3041h St SW 3081h SI/41 S 305th St Wes S 305th St y v 1 Ti N /1 S 306th St I �+ at N > Q i11 S a a � c7r N 140 CV S 307th St LL SW 3NIh St If 5 308th 5t' Lake Grove Elementary School 3 � EL a _ L a SW � N Q t 11 g ! 31-2t� St S 312th St V7 N a SW 3I3Ih St `,, $W 313th Ct Legend 45 PM Peak Hour Traffic Volumes (651 AM Peak Hour Traffic Volumes 5,000 Daily Traffic Volumes (Not to Scale) Federal Way �f Figure 5 School District TE NW 2018 Existing Daily, AM & PM Lake Grove Elementary Peak Hour Trip Assignment School Traffic Impact Analysis Sw 3D8th St/8fh Ave SW h AvC V!1 IIXHewO a (�) Io 4 F 3 Izl R rn euym sr I lat 3 i � e I a (f6J7� lla ,1) .6i 151 I F 319) I i s+�3aeu,s� iz� h I - IS) 151 F 3 17i a�9Sa j21J R366m Sr 1 161�� 6 4 11 lal 3 � PI ital 151 I F 319) I i s+�3aeu,s� iz� h I - IS) 151 F 3 17i a�9Sa j21J R366m Sr 1 161�� 6 4 11 lal 3 � PI ital F 3 17i a�9Sa j21J R366m Sr 1 161�� 6 4 11 lal 3 � PI ital a (VTENW page 12 November 16, 2018 Federal Way School District- Lake Grove Elementary School 303 SW 30811 St, Federal Way, WA Traffic Impact Analysis > I N Q a o`o SW 304th St S 304th St Oft PI �1 S 305th St S305thSt y! N { Q 1 L H N 5 306th St ^ 3 N d a) < �• a Q 0. N I, 490 N S 307th St [ � (1,630f SW 3081h 5t if f _5 308th St Lake Grove Elementary CL School o St D J `I t a SW a y O J r $W 3Sg1ri St f S 312th St N N Q SW 313th St ��SW 313t Legend 45 Peak Hour Traffic Volumes Without Project (65) Peak Hour Traffic Volumes With Project 5,000 Daily Traffic Volumes Without Project (5,000) Daily Traffic Volumes With Project (raal IaScOlel Federal Way Figure 6 School District TE N W 2020 Daily and AM Peak Lake Grove Elementary Hour Traffic Volume Impacts Schaal Traffic Impoct Analysis SW 308th St/Rlh Ave SW SW 30B1h $11d1h AvB $4V1 West �IH n � I I (o s a F 21 Iza) 1231 1%J 3/1Fn�cl• R (62J 54 13 0 B (56) 19� � (26i i2) IaJ � w (lal tlsl 2 31 10 t— 10119J � Ica (`TI RIh _ f37) 27 —> a 0 30 25 I � � 131J SW 30BIh SI/Easl Drivewoy E— 72179J � o Issl K.S. S+ Rin � 1 (59J 45 —� a 4 38 (281 0 � llRf I75) Sw 308th SI/ I sl Ave S � 3 (12I 2I3I3 a 43(5) 27 5 3!}9!n Sr SW )(?Ir' Sr f16111�..• R j� I � I 171 5 i ^66 226 20 1861 70 -'y (8el %9 TE N W page 13 November 16, 2018 1 Federal Way School District - Lake Grove Elementary School 303 SW 3081h St, Federal Way, WA Traffic Impact Analysis I H am Qt V) f oL`o SW 304th St S 3041h St 041h PI S 305th St S 305N St v) N Q Y! N 5 306th St ^ 3J > fJ N N > Q q Q �` Q a Ll a S 307th St � vl SW 3081h St 1 S' 3081h St! ]r --T- Lake Grove N Elementary cL School N N Y a' 6 _ �c O al SW ` y' `23-4 t l SW 3,v2�>ti 5t 1� S 312ih St N > Q SW 31"3th;St SW M3th Ct -- Legend 45 Peak Hour Traffic Volumes Without Project (65) Peak Hour Traffic Volumes With Project INot to Scale) Federal Way �Figure 7 School District TEN2020 PM Peak Hour Lake Grove Elementary Traffic Volume Impacts School Traffic Impact Analysis SW sw 3081h sllern Ave Swl wesl Drlvewa n � 4 1Jf3,) 11\4• q E—• 53 Is7) J7 2j7j 4� BSI, ; I � I (sb] sl i +5 z2 s 14 f29) I$ � 1341 {b) {22j 3081h SI/Slh Ave Sw A I4} 34 SI F 13{141 I6 Ir � � ►�RRR1 t3 I I`TIf1i .,, . (Ib) 14� a 7 32 g � o- ;51 Sw 3081h SI/Eosl Driveway E- 77 1e0) 0 1361 � gin t� R�YI f911 B7 � 1 0 13 49 fal I o � a 1261 fIs) SW 3081h St/ I st Ave S � 2 (10] 393 7 F 4(5) �JB 32c ua:ti << W fn H!` f 15) 14 � •T 131 2 � 48 317 35 I701 65� = (571 Gd) TEN W page 14 November 16, 2018 Federal Way School District- Lake Grove Elementary School 303 SW 3081h St, Federal Way, WA Traffic Impact Analysis Table 5 2020 AM Peak Intersection Level of Service Impacts 2020 Without Project 2020 With Project Delay V/C Delay V/C Studv Intersection LOS (sec) Ratio LOS (sec; Ratio_ 1lnsianalized Intersections # 1 - SW 308th St / 8th Ave SW A WS A 7.4 0.24 A 7.6 0.25 #2 - SW 308th St / 4th Ave SW / West Dr EB Left -- -- - WB Left A 7.6 0.01 A 7.8 0.03 NB B 10.0 0.05 B 11.4 0.12 SB B 10.2 0.02 B 11.7 0.03 #5 - SW 308th St / East Driveway WB Left -- A 7.8 0.08 NB A 9.3 0.09 B 11.9 0.26 #6 - SW 308th St / Is' Ave S EB B 11.1 0.14 B 11.9 0.18 WB C 19.4 0.12 C 21.5 0.18 NB Left A 8.0 0.06 A 8.0 0.07 II SB Left 1 A 7.8 0.00 A 7.8 0.00 Source: "Highway Capacity Manual", Special Report 209, Transportation Research Board, 2010 Table 6 2020 PM Peak Intersection Level of Service Impacts 2020 Without Project 2020 With Project Delay V/C Delay V/C Study Intersection LOS sec) Ratio LOS sec Ratio Qnsi nalized Interse fi ns #1 -SW 308th St / 8th Ave SW AWS A 7.3 0.14 A 7.3 0.14 #2 - SW 3081h St / 4th Ave SW / West Dr EB Left A 7.8 0.00 A 7.9 0.00 WB Left A 8.1 0.00 A 8.2 0.02 NB B 13.4 0.11 B 14.8 0.17 SB B 13.0 0.06 B 14.1 0.08 #5 - SW 308th St / East Driveway WB Left -- - A 7.9 0.09 NB B 10.1 0.11 B 12.3 0.22 #6 - SW 308th St / 1st Ave S EB B 12.4 0.15 B 12.3 0. WB C 26.9 0.19 D 28.0 0.21 N B Left A 8.3 0.04 A 8.3 0.05 SB Left I A 8.0 QAl A 8.0 0.01 Source: "Highway Capacity Manual", Special Report 209, Transportation Research Board, 2010 Nonmotorized Impacts As part of the proposed project, raised sidewalks would be provided along the school property frontage on SW 308th Street. Marked crosswalks and speed bump crosswalks on SW 3081h Street along the school property frontage would remain the same. TTENW page 15 November 16, 2018 Federal Way School District - Lake Grove Elementary School 303 SW 3081h St, Federal Way, WA Traffic Impact Analysis Site Access and Safety Issues Existing site access is provided via four site driveways onto SW 308th Street. Proposed site access would be provided via two existing site driveways onto SW 308th Street, one accessing the west parking lot and the other accessing the east parking lot. These site driveways would be converted to full access site driveways. All site driveway intersections would operate at LOS B or better with a v/c ratio under 1.0 during the a.m. peak hour and at LOS C or better with a v/c ratio under 1 .0 during the p.m. peak hour with or without the project in 2020. The existing two center site driveways onto SW 308th Street would be removed. Student pick- up/drop off would continue to be provided via the west parking lot. Bus pick-up and drop-off would be relocated to the east parking lot. The renovated west parking lot would provide 11 visitor parking stalls and the renovated east parking lot would provide 49 staff parking stalls. Within the west parking lot, site circulation would travel one-way southbound and then northbound, counterclockwise in a loop. Within the east parking lot, traffic circulation would be provided two ways within the parking lot. Site circulation within these parking lots is shown in Figure 2. As part of the project, roadway frontage improvements to include curb, gutter, sidewalk and landscaping would be required along SW 308th Street, which could also require right-of-way dedication, Queuing Analysis and Student Pick-Up/Drop-Off Loading Areas There are no queuing issues during the AM peak hour as vehicle arrivals and departures are staggered in the morning when students are dropped off before school begins. Existing queues related to school pick-up/drop-offs on SW 308ih Street were observed to occur during the PM peak hour at its intersection with 31d Avenue SW / Existing Center Driveway (Intersection #4). Existing maximum queue lengths were observed to be 1 1 vehicles (about 5 to 6 vehicles in both directions) during the PM peak hour at this site driveway onto SW 308th Street. As part of the proposed redevelopment, this driveway would be removed. Student pick-up/drop off would be designated to be provided in the west parking lot during school arrival and dismissal times with access via Intersection #2 — SW 308ih Street / 4th Avenue SW / West Driveway. Bus pick-up and drop-off would be relocated to the east parking lot where the existing driveway onto SW 3081h Street would be converted to a full - access driveway (Intersection #5). Student pick-up/drop off would also be provided in the west parking lot. It is recommended that vehicles queue up along the northern edge of the east parking lot so buses can still maneuver within the lot. Therefore, maximum queuing would be split between Intersection #2 — SW 308th Street / 4th Avenue SW / West Driveway and Intersection #5 — SW 308th Street / East Driveway with 5 to 6 vehicle queues (2 to 3 in each direction) at both site driveways. With the proposed development, it is anticipated to increase by about 3 vehicles (1 westbound and 2 eastbound) ,V TE N W page 16 November 16, 2018 Federal Way School District- Lake Grove Elementary School 303 SW 30811 St, Federal Way, WA Traffic Impact Analysis at Intersection #2 - SW 3081h Street / 4th Avenue SW / West Driveway and by about 4 vehicles (3 westbound and 1 eastbound) at Intersection #5 - SW 308th Street / East Driveway. Maximum queuing is most likely to occur once during a 15-minute period (will most likely last for about 5 minutes consistent with existing conditions) at both site driveway intersections during the PM peak hour while vehicles wait for school to be dismissed. Once school is dismissed and vehicles begin egressing this driveway intersection, traffic flow will return back to "normal/optimal" conditions on SW 308th Street. It should be noted that 95th percentile queue lengths for all stop -controlled movements at the site driveway intersections onto SW 308th Street estimate queue lengths to be less than 25 feet or 1 vehicle during the AM and PM peak hour with the project in 2020. School Safe Walk Route Figure 8 shows safe walk routes within a 1-mile radius of Lake Grove Elementary School. There are no mitigation measures as students would be able to safely travel along sidewalks on the south side of SW 308th Street and access the school either by the sidewalk entrance located in between 4th Avenue SW/West Driveway and 3rd Avenue SW or travel along the east side of the East Driveway. Project Mitigation A review of traffic impacts to intersection levels of service, site access, and circulation issues was conducted in association with the Lake Grove Elementary School in Federal Way, WA. The following mitigation measures are recommended to reduce or eliminate project impacts: ➢ The City of Federal Way assesses a traffic impact fee rate of $2.00 per new square - foot of floor area for elementary schools (2018 Federal Way Impact Fee and Components). Based upon a net increase of 12,352 square feet (51,238 square feet existing and 63,590 square feet future), Lake Grove Elementary School would be assessed a traffic impact fee of $24,704. The final fee would be determined at building permit issuance. ➢ The applicant would be required to construct the necessary frontage improvements along SW 3086 Street to include curb, gutter, sidewalk and landscaping, which could also include right-of-way donation. If you have any questions regarding the information presented in this memo, please call me at (206) 361-7333 x 101 or mikeread@tenw.com. TEN W page 17 November 16, 2018 S Federal Way School District — Lake Grove Elementary School 303 SW 3081h St, Federal Way, WA Traffic Impact Analysis 0 1! f, N!f • y S ' ............... ....... ' -•---• - S:na.�:. . •LOicBGwe • • C ; Elementary r,iMna ca<m. n Q n S� Same s r1 rF cNem.ib+c.•na i —10- £ •• • ` Legend L�Bkc .. e.a• rip7C Hpu1ip' txtiew4;k Of SholFQ —Mlh XdseC Culp ••� Elenrc.wy!®lodv ...__... saa.•W[s>k ROUS�'T,J.Ouw Only Snuuklef • c(OM.o k OVA, ftq Guofdi74 Sfoo Sig•. 110%C 5l" �. 50=1 SS7eed Zone Federal Way FigureTEN WV9 Figure $ school district School Safe Walk RouteCoke Elementary School VOMC lmpoCr Ana1y54 -69DTENW page 18 November 16, 2018 ATTACHMENT A Daily, AM & PM Peak Traffic Counts T TENW www.idaxdata.com 8TH AVE SW WW;1_ SW 308TH ST Date: Wed, Jun 13, 2018 N Peak Hour Count Period: 7:00 AM to 9:00 AM Peak Hour: 8:00 AM to 9:00 AM o ao � M f F N N OI O iL U SW 308TH ST O 1 0 31 TEV: 150 n o ._Lf A 1 PHF: 0.75 • 0 o 0 0 27 25 SW 306TH ST 13 �� 58 0 n_' o �O 0 4 0 E u00��LF NV O O N N F HV %: PHF EB 3.7% 0.56 WB 3.2% 0.55 NB 7.7% 0.68 SB 2.5% 0.77 TOTAL 4.7% 0.75 Two -Hour Count Summaries Interval SW 308TH ST SW 308TH ST 8TH AVE SW 8TH AVE SW 15-min Rolling Eastbound Westbound Northbound Southbound Start Total One Hour UT LT TH RT UT LT TH RT UT LT TH RT UT LT TH RT 7:00 AM 0 0 1 2 0 1 0 0 0 0 4 1 0 1 3 0 13 0 7:15 AM 0 1 2 2 0 2 1 0 0 0 6 0 0 1 7 1 23 0 7:30 AM 0 1 3 0 0 1 4 0 0 0 5 5 0 0 14 0 33 0 7:45 AM 0 1 10 0 0 3 3 0 0 0 7 -5 0 1 10 2 42 ill 8:00 AM 0 0 2 0 0 3 3 1 0 0 8 3 0 0 8 0 28 126 8:15 AM 0 0 4 0 0 0 1 0 0 0 4 1 0 1 11 1 23 126 8:30 AM 0 1 10 1 0 2 2 5 0 0 9 10 0 5 3 1 49 142 8:45 AM 0 0 .3 u 0 8 3 3 0 0 7 10 0 3 7 0 1 50 1 150 Count Total 0 4 41 5 0 20 17 9 0 0 50 35 0 12 63 5 1 261 1 0 Peak Hour 0 1 25 1 0 13 9 9 0 0 28 24 0 9 29 2 1 150 1 0 Note: Two-hour count summary volumes include heavy vehicles but exclude bicycles in overall count. Heavy Vehicle Totals Bicycles Pedestrians (Crossing Leg) EB WB NB SB Total EB WB NB SB Total East West North South Total F 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 7:45 AM 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 8:00 AM 0 0 0 0 0 0 1 0 0 1 0 0 0 0 0 8:15AM 1 1 1 0 3 0 0 0 0 0 0 0 0 0 0 8:30 AM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8:45AM 0 0 3 1 4 1 0 0 0 0 0 0 0 0 0 0 Count Total 3 1 4 2 10 1 1 0 0 2 0 0 0 1 1 Peak Hour 1 1 4 1 7 0 1 0 0 1 0 0 0 0 0 Mark Skaggs: (425) 250-0777 mark.skaggs@idaxdata.com www.idaxdata.com LAKE GROVE ES EAST STAFF LOT ' SW 308TH ST A Date: Wed, Jun 13, 2018 N Peak Hour Count Period: 7:00 AM to 9:00 AM Peak Hour: 8:00 AM to 9:00 AM T Je- 1 O N O L LU R 1 n 0 0 TEV: 123 1 20 28 A 2 «- 0 • Q 6� 51 PHF: 0.55 7 4 � 4 o 18 � 0 0 -0 1 Q 17 ' 308TH S o C11 o ao _ OUwSW EB HV %:PHF 7.2% 0.58 WB 0.0% 078 NN NB 0.0% 0.33 SB 16.7% 0.75 TOTAL 4.9% 0.55 'Two -Hour Count Summaries Interval SW 308TH ST SW 308TH ST LAKE GROVE ES EAST STAFF LOT DWY 4TH AVE SW 15-min Rolling Eastbound Westbound Northbound Southbound Start Total One Hour LIT LT TH RT LIT LT TH RT LIT LT TH RT LIT LT TH RT 7:00 AM 0 0 6 1 0 0 1 0 0 0 0 0 0 0 0 0 8 0 7:15AM 0 0 7 0 0 2 2 0 0 0 0 0 0 0 0 0 11 0 7:30 AM 0 1 10 1 0 2 4 0 0 0 0 0 0 0 0 1 19 0 7:45 AM 0 1 9 4 0 6 2 C 0 0 0 0 0 0 0 1 23 61 8:00 AM 0 0 5 1 0 2 4 1 0 1 0 0 0 1 0 0 15 68 8:15 AM 0 0 6 3 0 2 4 0 0 0 0 1 0 2 0 0 18 75 8:30 AM 0 0 20 4 0 0 6 0 0 1 0 2 0 0 0 1 34 90 8-45 AM1 0 0 20 10 0 3 6 0 1 0 10 0 5 1 0 2 0 0 1 56 123 Count Total 1 0 2 83 24 0 17 29 1 0 12 0 8 1 0 5 0 3 1 184 0 Peak Hour 1 0 0 51 18 0 7 20 1 0 12 0 8 1 0 5 0 1 1 123 0 Note: Two-hour count summary volumes include heavy vehicles but exclude bicycles in overall count. Interval Heavy Vehicle Totals Bicycles Pedestrians (Crossing Leg) Start EB WB NB SB Total EB WB NB SB Total East West North South Total 7:00 AM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7:15AM 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 7:30 AM 0 ❑ 0 0 0 1 0 0 0 1 0 0 0 ❑ 0 7:45 AM 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 8.00 AM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8:15AM 1 0 0 1 2 0 0 0 0 0 2 0 0 0 2 8:30 AM 0 0 0 0 0 0 0 0 0 0 2 0 1 7 10 8:45 AM 14 0 0 0 4 0 ❑ 0 ❑ 0 1 0 1 10 12 Count Total 1 6 0 0 1 7 1 0 0 1 0 1 1 6 0 2 17 25 Peak Hour I 5 0 0 1 6 0 0 0 0 0 1 5 0 2 17 24 Mark Skaggs: (425) 250-0777 mark.skaggs@idaxdata.com www.idaxdata.com 25 LAKE GROVE ES BUS DWY dax SW 308TH ST A Date: Wed, Jun 13, 2018 N Peak Hour Count Period: 7:00 AM to 9:00 AM Peak Hour: 8:00 AM to 9:00 AM SW 308TH ST a 28 28 8 38 0 TEV: 100 :a ' u' 6� 44 PHF: 0.66 p 44 20 �: p V SW 308TH ST 0 0 0 w 0 w EB HV %: 9.4% PH 0.591 t y m WB 5.6% 0.82 gw NB - �Q N o SB TOTAL 8.0% 066 Two -Hour Count Summaries SW 308TH ST SW 308TH ST LAKE GROVE ES BUS DWY 0 15-min Rolling Eastbound Westbound Northbound Southbound Interval Sir{ Total One Hour UT LT TH RT UT LT TH RT UT LT TH RT UT LT TH RT 7:00 AM 0 0 6 0 0 0 1 0 0 0 0 0 0 0 0 0 7 0 7:15AM 0 0 7 0 0 1 4 0 0 0 0 0 0 0 0 0 12 0 7:30 AM 0 0 9 0 0 0 6 0 0 0 0 0 0 0 0 0 15 0 7:45 AM 0 0 10 0 0 1 8 0 0 0 0 0 0 0 0 0 19 53 8:00 AM 0 0 4 2 0 1 7 0 0 0 0 0 0 0 0 0 14 60 8:15 AM 0 0 9 1 0 2 6 0 0 0 0 0 0 0 0 0 18 66 8:30 AM 0 0 9 12 0 3 6 0 0 0 0 0 0 0 0 0 30 81 8:45 AM 1 0 0 22 5 0 2 9 0 0 0 0 0 0 0 0 0 1 38 1 100 Count Total 1 0 0 76 20 0 10 47 0 0 0 0 0 0 0 0 0 153 0 Peak Hour 1 0 0 44 20 0 8 28 0 0 0 0 0 0 0 0 0 1 100 1 0 Note: Two-hour count summary volumes include heavy vehicles but exclude bicycles in overall count. Interval Heavy Vehicle Totals Bicycles Pedestrians (Crossing Leg) EB WB NB SB Total EB WB NB SB Total East West North South Total Start 7:00 AM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7:15AM 0 1 0 0 1 0 0 0 0 0 0 1 0 0 1 7:30 AM 0 0 0 0 0 1 0 0 0 1 0 0 0 0 0 7:45 AM 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 8:00 AM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8:15AM 2 0 0 0 2 0 0 0 0 0 0 2 0 0 2 8:30 AM 0 0 0 0 0 0 0 0 0 0 0 2 0 0 2 8:45 AM 4 2 0 0 b Cl U 0 ] (i 1 0 1 0 0 1 Count Total 1 7 3 0 0 10 1 0 0 0 1 1 0 6 0 0 6 Peak Hr 1 6 2 0 0 8 1 0 0 0 0 0 0 5 0 0 5 Mark Skaggs: (425) 250-0777 mark.skaggs@idaxdata.com www.idaxdata.com LAKE GROVE ES STUDEN DROP OFF ' SW 308TH ST Date: Wed, Jun 13, 2018 N Peak Hour Count Period: 7:00 AM to 9:00 AM Peak Hour: 8:00 AM to 9:00 AM LU 0 0 v o 0 SW 308TH ST 0 0 4 TEV: 145 36 75 �— A 0 o v �0 o • 20 PHF: 0.53 350 40 � 39 19 SW 308TH STni 42 i 0 y Q 9 C.��pO D-- _ o o OOO F EB HV %: 5.1% PHF 0.46 o WB 5.3% 0.48 D C4 NB 23.1% 0.54 SB 0.0% 0.63 TOTAL 8.3% 0.53 Two -Hour Count Summaries Interval SW 308TH ST SW 308TH ST LAKE GROVE ESSTNDENDROP OFF DWY 3RD AVE SW 1 Rolling Eastbound Westbound Northbound Southbound Start Total One Hour UT LT TH RT UT LT TH RT UT LT TH RT UT LT TH RT 7:00 AM 0 0 6 0 0 0 1 0 0 0 0 0 0 0 0 1 8 0 7:15AM 0 0 7 0 0 4 4 0 0 0 0 1 0 0 0 0 16 0 7:30 AM 0 1 5 3 0 2 6 0 0 0 0 0 0 0 0 1 18 0 7:45 AM 0 0 9 1 0 5 8 0 0 0 0 0 0 0 0 0 23 65 8:00 AM 0 0 3 0 0 2 8 0 0 2 0 1 0 2 0 0 18 75 8:15 AM 0 0 7 0 0 1 8 0 0 0 0 3 0 0 0 0 19 78 8:30 AM 0 0 3 5 0 11 6 0 0 4 1 7 0 2 0 0 39 99 8:45 AM 1 0 0 7 14 1 0 21 14 -s 1 0 1 0 7 1 0 0 1 0 1 69 1 45 Count Total 1 0 1 47 23 0 46 55 4 1 0 7 1 19 0 4 1 2 210 1 0 Peak Hour 1 0 0 20 19 0 35 36 4 1 0 7 1 18 0 4 1 0 145 0 Note: Two-hour count summary volumes include heavy vehicles but exclude bicycles in overall count. Interval Heavy Vehicle Totals Bicycles Pedestrians (Crossing Leg) Start EB WB NB SB Total EB WB NB SB Total East West North South Total 7:00 AM 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 7:15AM 0 1 1 0 2 0 0 0 0 0 0 0 0 0 0 7:30 AM 0 0 0 0 0 1 0 0 0 1 0 0 0 0 0 7:45 AM 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 8:00 AM 0 0 ❑ 0 0 0 0 0 0 0 0 0 0 0 0 8:15AM 2 0 0 0 2 0 0 0 0 0 0 0 0 1 1 8:30 AM 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 8:45 AM 4' 7 u 9 0 0 0 0 0 1 1 14 0 8 23 Count Total 3 5 7 0 15 1 0 0 0 1 1 1 14 0 10 25 Peak Hour 2 4 6 0 12 0 0 0 0 0 1 1 14 0 9 24 Mark Skaggs: (425) 250-0777 mark.skaggs@idaxdata.com www.idaxdata.com 4 LAKE GROVE ES EXIT DWY SW 308TH ST L&W. Date: Wed, Jun 13, 2018 N Peak Hour Count Period: 7:00 AM to 9:00 AM Peak Hour: 8:00 AM to 9:00 AM m m 3 0 N O O LD O 4W 308TH ST j 0 n 0 ~0 7 1 TEV: 159 67 e- o 42 41 PHF: 0.5 0 ©� 0 0 1O 0 —+ 2 SW 308TH ST t F HV %: PHF EB 21.4% 0.62 WB 4 2% 0.55 Q o v NB 0.0% 0.33 SB 0.0% 030 TOTAL 7.5% 0.50 Two -Hour Count Summaries SW 308TH ST SW 308TH ST LAKE GROVE ES EXIT DWY 2ND AVE SW Interval Eastbound Westbound Northbound Southbound 15-min Rolling Start Total One Hour UT LT TH RT UT LT TH RT UT LT TH RT UT LT TH RT 7:00 AM 0 0 6 0 0 a 1 1 0 0 0 0 0 0 0 0 8 0 7:15AM 0 0 8 0 0 0 7 0 0 0 0 0 0 2 0 0 17 0 7:30 AM 0 0 4 0 0 0 6 1 0 0 0 0 0 1 0 1 13 0 7:45 AM 0 1 9 0 0 0 14 0 0 0 0 0 0 2 0 1 27 65 8:00 AM 0 1 6 0 0 0 9 1 0 0 0 0 0 0 0 0 17 74 8:15AM 0 0 5 0 0 0 9 0 0 0 0 0 0 0 0 0 14 71 8:30 AM 0 0 17 0 0 0 18 2 0 0 0 10 0 1 0 0 48 106 8:45 AM 1 0 0 13 0 0 0 31 1 1 0 4 1 25 1 0 4 0 1 1 80 159 Count Total 1 0 2 68 0 0 0 95 6 1 0 4 1 35 1 0 10 0 3 224 0 Peak Hour 1 0 1 41 0 0 0 67 4 1 0 4 1 35 1 0 5 0 1 159 0 Note: Two-hour count summary volumes include heavy vehicles but exclude bicycles in overall count. Interval Heavy Vehicle Totals Bicycles Pedestrians (Crossing Leg) Start EB WB NB SB Total EB WB NB SB Total East West North South Total 7:00 AM 0 0 0 0 0 0 0 0 0 0 0 0 ❑ t 1 7:15AM 1 0 0 2 0 0 0 0 0 0 0 0 0 0 7:30 AM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7:45 AM 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 8:00 AM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8:15AM 2 0 0 0 2 0 0 0 0 0 0 0 0 1 1 8:30 AM 0 1 0 0 1 0 0 0 0 0 3 0 0 0 3 73A5 AM 7 2 0 0 9 0 0 G 0 ❑ 1 3 0 0 1 4 Count Total 11 4 0 0 15 1 0 0 0 0 0 6 0 0 3 9 Peak Hour 9 3 0 0 12 1 0 0 0 0 0 6 0 0 2 8 Mark Skaggs: (425) 250-0777 mark.skaggs@idaxdata.com , www.idaxdata.com 1ST AVE S WWI SW 308TH ST Date: Wed, Jun 13, 2018 N Peak Hour Count Period: 7:00 AM to 9:00 AM Peak Hour: 8:00 AM to 9:00 AM M M N > Q O U) N N N N V O 308TH 5T f 1n Lt � o-- f 3W r 7§ 31 o �o aa_ 81 5:. PHF: 0.93 25 66 10 8 SW 308TH ST� l r 5 40 0 2�yr�17R E uUDDuut O N M CD f 10 � � N HV %: PHF O EB 11.1% 0.60 r v WB 3.2% 086 A cr) N NB 31% 092 SB 3.4% 093 TOTAL 4.2% 0.93 Two -Hour Count Summaries Interval SW 308TH ST SW 308TH ST 1ST AVE S 1ST AVE S 1 Rolling Eastbound Eastbound Westbound Northbound Southbound Start Total One Hour UT LT TH RT UT LT TH RT UT LT TH RT UT LT TH RT 7:00 AM 0 0 0 7 0 2 0 1 0 0 82 1 0 0 39 0 132 0 7:15 AM 0 2 0 7 0 5 2 2 0 7 95 3 0 1 45 2 171 0 7:30 AM 0 2 0 6 0 4 0 0 0 5 78 1 0 0 54 4 154 0 7:45 AM 0 2 2 9 0 5 0 1 1 12 71 5 0 0 46 2 156 613 8:00 AM 0 2 1 6 0 5 1 1 0 9 54 5 0 0 53 1 138 619 8:15 AM 0 3 0 6 0 7 1 1 0 10 64 6 0 1 60 1 160 608 8:30 AM 0 3 1 25 0 8 1 0 0 19 45 5 0 1 59 3 170 624 8:45 AM 0 2 3 29 0 :5 0 1 0 24 50 3 0 2 48 fi 173 641 Count Total 0 16 7 95 0 41 5 7 1 86 539 29 0 5 404 19 1,254 0 Peak Hour 0 10 5 66 0 25 3 3 0 62 213 19 0 4 220 11 1 641 0 Note: Two-hour count summary volumes include heavy vehicles but exclude bicycles in overall count. Interval Heavy Vehicle Totals Bicycles Pedestrians (Crossing Leg) EB WB NB SB Total EB WB NB SB Total East West North South Total Start 7:00 AM 0 0 3 0 3 C 0 0 0 0 0 0 0 0 0 7:15AM 0 2 3 1 6 0 0 0 0 0 0 0 0 0 0 7:30 AM 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 7:45 AM 1 0 0 1 2 0 0 0 0 0 0 0 0 0 0 8:00 AM 0 0 3 2 5 0 0 0 0 0 0 0 0 1 1 8:15AM 2 0 1 2 5 0 0 0 1 1 0 0 0 1 1 8:30 AM 0 1 3 3 7 0 0 0 0 0 0 0 0 0 0 8:45AM - 1 0 0 0 0 0 0 0 0 0 0 Count Total 10 3 15 11 39 0 0 0 1 1 0 0 0 2 2 Peak Hour 9 1 9 8 27 0 0 0 1 1 0 0 0 2 2 Mark Skaggs: (425) 250-0777 mark.skaggs@idaxdata.com www.idaxdata.com 4 N U) W Q 2 cm � fD C7 0 �� �'>F 3 -- TEV: 24 13 --w PHF: 8 --1 SW 308TH ST ■ 6 n O r` 1 a 8TH AVE SW SW 308TH ST Peak Hour M n V M Two -Hour Count Summaries Ln O SW 348T7•I 57 4 132 *" 12 �24 0.83 822 �0 Fm5 M V W EB Q WB v NB HV %: 0 0% 0 0% 0.0% SB 0 0% TOTAL 0 0% AfTe- Date: Wed, Jun 13, 2018 Count Period: 4:00 PM to 6:00 PM Peak Hour: 5:00 PM to 6:00 PM �(�jj• L�V O n �00 o �► �0 VF 0. 4 t O PHF • 0.75 �l�_ 0 75 %� 0.93 0.67 083 0 • QA 7— SW 308TH ST SW 308TH ST 8TH AVE SW 8TH AVE SW Interval 15-min Rolling rUT Eastbound Westbound Northbound Southbound Start Total One Hour LT TH RT UT LT TH RT UT LT TH RT UT LT TH RT 4:00 PM 0 0 3 0 0 1 2 0 0 2 6 2 0 1 7 2 26 0 4:15 PM 0 0 2 0 0 2 4 0 0 1 6 2 0 1 6 2 26 0 4:30 PM 0 0 1 0 0 2 3 0 0 2 3 4 0 1 5 1 22 0 4:45 PM 0 0 3 1 0 6 3 0 0 2 6 3 0 0 3 1 28 102 5:00 PM 0 1 0 3 0 1 4 1 0 1 7 2 0 0 8 1 29 105 5:15 PM 0 1 6 1 0 2 1 2 0 2 6 1 0 2 7 1 32 ill 5:30 PM ❑ 1 3 1 0 2 5 1 0 2 9 0 a 2 10 4 4Q 129 5:45 PM 1 0 0 4 3 0 3 2 0 0 2 8 1 0 1 7 0 31 132 Count Total 0 3 22 9 0 1 19 24 4 0 14 51 15 0 8 53 12 234 0 Peak Hour 0 3 13 8 0 8 12 4 0 7 30 4 0 5 32 6 132 0 Note: Two-hour count summary volumes include heavy vehicles but exclude bicycles in overall count. Interval Heavy Vehicle Totals Bicycles Pedestrians (Crossing Leg) Start EB WB NB SB Total EB WB NB SB Total East West North South Total 4:00 PM 0 0 0 0 0 0 0 0 0 0 0 4 0 1 5 4:15PM 0 0 1 0 1 0 0 1 0 1 0 1 0 0 1 4:30 PM 0 0 0 0 0 2 0 0 0 2 0 0 0 0 0 4:45 PM 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 5:00 PM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5:15PM 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 5:30 PM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5:45 PM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Count Total 0 0 1 0 1 2 0 1 1 4 0 6 0 1 7 Peak Hour 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 Mark Skaggs: (425) 250-0777 mark.skaggs@idaxdata.com www.idaxdata.com 24 LAKE GROVE ES EAST STAFF LOT DWY e&, SW 308TH ST Date: Tue, Jun 19, 2018 N Peak Hour Count Period: 2:00 PM to 6:00 PM Peak Hour: 3:15 PM to 4:15 PM 0M N � j (-j��A• Q v Cn O 4 W 306TH ST to L4 O 1 J-00DO- `0 7F 4 TEV: 184 50 E 56 10M • � 0 � a 66 48 PHF: 0.81 2 �4 Q 1-9 14= 0 0 "" 70 1�,1 SW 308TH ST n O �y w F LL N 0 Q 0 LLl 0 '-' LL YW< EB HV %: 9.1% PH__ 0.66 t O WB 3 6% 0.78 M NB 0.0% 0.61 SB 4.3% 0,64 TOTAL 4 9% 0.81 Four -Hour Count Summaries Interval SW 308TH ST SW 308TH ST LAKE GROVE ES EAST STAFF LOT DWY 4th AVE SW 15-min Rolling Eastbound Westbound Northbound Southbound Start Total One Hour UT LT TH RT UT LT TH RT UT LT TH RT UT LT TH RT 3:15 PM 0 1 12 3 0 1 14 2 0 6 0 6 0 6 2 1 54 0 3:30 PM 0 2 14 9 0 1 11 0 0 3 3 0 0 3 1 1 48 0 3:45 PM 0 1 14 1 0 0 16 2 0 10 2 4 0 2 0 5 57 0 4:00 PM 0 0 8 1 0 0 9 0 0 2 0 3 0 2 0 0 25 1 184 Peak Hour 0 4 48 14 0 2 50 4 0 21 5 13 0 13 3 7 184 1 0 Note: For all three-hour count summary, see next page. Interval Heavy Vehicle Totals Bicycles Pedestrians (Crossing Leg) EB WB NB SB Total EB WB NB SB Total East West North South Total Start 3:15 PM 0 0 0 1 1 0 0 0 0 0 27 9 7 25 68 3:30 PM 4 1 0 0 5 0 0 0 0 0 32 3 6 32 73 3:45 PM 2 1 0 0 3 0 0 0 0 0 14 0 2 13 29 4:00PM 0 0 0 0 0 0 0 0 0 0 2 0 1 0 3 Peak Hour 1 6 2 0 1 9 0 0 0 0 0 75 12 16 70 173 Mark Skaggs: (425) 250-0777 mark.skaggs@idaxdata.com www.idaxdata.com 24 Four -Hour Count Summaries SW 308TH ST SW 308TH ST LAKE GROVE ES EAST STAFF LOT DWY 4th AVE SW 15-min Rolling Eastbound Westbound Northbound Southbound Interval Start Total One Hour UT LT TH RT UT LT TH RT UT LT TH RT UT LT TH RT 2:00 PM 1 1 9 1 0 1 9 3 0 1 0 1 0 1 0 2 30 0 2:15 PM 0 0 8 2 0 1 4 5 0 0 1 1 0 0 0 0 22 0 2:30 PM 0 1 7 0 0 0 6 3 0 0 0 1 0 2 0 1 21 0 2:45 PM 0 1 9 0 0 2 5 0 0 1 0 2 0 1 0 1 22 95 3:00 PM 0 0 3 1 0 0 8 1 0 0 0 5 0 3 0 0 21 86 3:15 PM 0 1 12 3 0 1 14 2 0 6 0 6 0 6 2 1 54 118 3:30 PM 0 2 14 9 0 1 11 0 0 3 3 0 0 3 1 1 48 145 3:45 PM 0 1 14 1 0 0 16 2 0 10 2 4 0 2 0 5 57 180 4:00 PM 0 0 8 1 0 0 9 0 0 2 0 3 0 2 0 0 25 184 4:15 PM 0 0 2 1 0 0 3 0 0 1 0 2 0 0 0 1 10 140 4:30 PM 0 0 6 0 0 0 4 1 0 1 0 2 0 0 0 0 14 106 4:45 PM 0 0 4 0 0 0 8 0 0 0 0 1 0 1 0 1 15 64 5:00 PM 0 1 9 1 0 0 9 0 0 0 0 0 0 0 0 1 21 60 5:15 PM 0 0 7 1 0 0 8 0 0 0 0 0 0 0 0 0 16 66 5:30 PM 0 0 4 0 0 0 7 1 0 0 0 0 0 0 0 1 13 65 5:45 PM 0 2 2 1 0 2 10 0 0 1 0 1 0 0 0 2 21 71 Count Total 1 10 118 22 0 1 8 131 18 0 26 6 29 0 21 3 17 410 1 0 Peak Hour 0 4 48 14 0 2 50 4 0 21 5 13 0 13 3 7 184 0 Note: Four-hour count summary volumes include heavy vehicles but exclude bicycles in overall count Interval Heavy Vehicle Totals Bicycles Pedestrians (Crossing Leg) EB WB NB SB Total EB WB NB SB Total East West North South Total Start 2:00 PM 0 0 0 0 0 0 2 0 0 2 13 0 2 22 37 2:15PM 0 0 0 0 0 0 2 0 0 2 5 0 0 1 6 2:30 PM 0 0 0 0 0 0 0 0 0 0 8 0 0 0 8 2:45 PM 0 1 0 0 1 0 0 0 0 0 2 0 0 8 10 3:00 PM 0 0 0 0 0 1 0 0 0 1 4 4 1 20 29 3:15 PM 0 0 0 1 1 0 0 0 0 0 27 9 7 25 68 3:30 PM 4 1 0 0 5 0 0 0 0 0 32 3 6 32 73 3:45 PM 2 1 0 0 3 0 0 0 0 0 14 0 2 13 28 4:00 PM 0 0 0 0 0 0 0 0 0 0 2 0 1 0 3 4:15PM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4:30 PM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4:45 PM 0 0 0 0 0 0 0 0 0 0 1 0 1 1 3 5:00 PM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5:15PM 0 0 0 0 0 0 0 0 0 0 4 0 0 0 4 5:30 PM 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 5:45PM 0 0 0 0 0 0 1 0 0 1 1 0 0 0 1 Count Total 6 4 0 1 11 1 5 0 0 6 113 16 20 122 271 Peak Hour 6 2 0 1 9 0 0 0 0 0 75 12 16 70 173 Mark Skaggs: (425) 250-0777 mark.skaggs@idaxdata.com www.idaxdata.com 25 LAKE GROVE ES BUS DWY i&a). SW 308TH ST 0�4 Date: Tue, Jun 19, 2018 N Peak Hour Count Period: 2:00 PM to 6:00 PM Peak Hour: 3:00 PM to 4:00 PM SW 308TH ST 53 56 84 < 0 TEV: 143 $ � o o PHF: 0.76 3 �3 • � � � - 72 65 T SW 308TH STFF n iC o M v 72 HV%: R V 0 19 PHFCD - V. [Ul U) EB 97% 0.75 m WB 63% 0.84 w NB 0.0% 0.44 010 n SB TOTAL 7 7% 0.76 Four -Hour Count Summaries SW 308TH ST SW 308TH ST LAKE GROVE ES BUS DWY 0 15-min Rolling Eastbound Westbound Northbound Southbound Interval Start Total One Hour UT LT TH RT UT LT TH RT UT LT TH RT UT LT TH RT 3:00 PM 0 0 11 0 0 1 9 0 0 0 0 1 0 0 0 0 22 0 3:15 PM 0 0 23 1 0 3 16 0 0 1 0 3 0 0 0 0 47 0 3:30 PM 0 0 14 3 3 3 11 0 0 1 0 0 0 0 0 0 35 0 3:45 PM 0 0 17 3 0 1 17 0 0 1 0 0 0 0 0 0 39 143 Peak Hour j 0 0 65 7 1 3 8 53 0 1 0 3 0 4 1 0 0 0 0 1 143 1 0 Note: For all three-hour count summary, see next page Interval Heavy Vehicle Totals Bicycles Pedestrians (Crossing Leg) EB WB NB SB Total EB WB' NB SB Total East West North South Total Start 3:00 PM 0 0 0 0 0 0 0 0 0 0 3 4 3 11 21 3:15 PM 1 0 0 0 1 0 0 0 0 0 4 27 4 6 41 3:30 PM 4 2 0 0 6 0 0 0 0 0 1 32 3 2 38 3:45 PM 2 2 0 0 4 0 0 0 0 0 0 14 1 0 15 Peak Hour 1 7 4 0 0 11 1 0 0 0 0 0 1 8 77 11 19 115 Mark Skaggs: (425) 250-0777 mark.skaggs@idaxdata.com www.idaxdata.com 25 Four -Hour Count Summaries SW 308TH ST SW 308TH ST LAKE GROVE ES BUS DWY 0 15-min Rolling Eastbound Westbound Northbound Southbound Interval Total One Hour Start UT LT TH RT UT LT TH RT UT LT TH RT UT LT TH RT 2:00 PM 0 0 11 0 0 3 12 0 0 1 0 1 0 0 0 0 28 0 2:15 PM 0 0 6 3 0 3 10 0 0 0 0 0 0 0 0 0 22 0 2:30 PM 0 0 10 0 0 4 9 0 0 0 0 0 0 0 0 0 23 0 2:45 PM 0 0 10 2 0 0 7 0 0 0 0 0 0 0 0 0 19 92 3:00 PM 0 0 11 0 0 1 9 0 0 0 0 1 0 0 0 0 22 86 3: 15 PM 0 0 23 1 0 3 16 0 0 1 0 3 0 0 0 0 47 111 3:30 PM 0 0 14 3 3 3 11 0 0 1 ❑ 0 0 0 0 0 35 123 3:45 PM 0 0 17 3 0 1 17 0 0 1 0 0 0 0 0 0 39 143 4:00 PM 0 0 13 0 0 0 9 0 0 0 0 0 0 0 0 0 22 143 4:15 PM 0 0 4 0 0 3 3 0 0 0 0 0 0 0 0 0 10 106 4:30 PM 0 0 8 0 0 1 5 0 0 0 0 0 0 0 0 0 14 85 4:45 PM 0 0 6 0 0 0 7 0 0 1 0 0 0 0 0 0 14 60 5:00 PM 0 0 9 0 0 0 9 0 0 0 0 0 0 0 0 0 18 56 5:15PM 0 0 7 0 0 0 8 0 0 0 0 0 0 0 0 0 15 61 5:30 PM 0 0 3 1 0 0 8 0 0 0 0 0 0 0 0 0 12 59 5:45 PM 0 0 3 0 0 0 12 0 0 0 0 0 0 0 0 0 15 60 Count Total 0 0 155 13 3 22 152 0 0 5 0 5 0 0 0 0 355 0 Peak Hour 0 0 65 7 3 8 53 0 0 3 0 4 0 0 0 0 143 0 Note: Four-hour count summary volumes include heavy vehicles but exclude bicycles in overall count. Interval Heavy Vehicle Totals Bicycles Pedestrians (Crossing Leg) Start EB WB NB SB Total EB WB NB SB Total East West North South Total 2:00 PM 0 0 0 0 0 0 2 0 0 2 0 13 0 3 16 2:15PM 0 0 0 0 0 0 2 0 0 2 0 5 0 2 7 2:30 PM 0 0 0 0 0 0 0 0 0 0 0 8 0 2 10 2:45 PM 0 1 0 0 1 0 0 0 0 0 0 2 0 4 6 3:00 PM 0 0 0 0 0 0 0 0 0 0 3 4 3 11 21 3:15PM 1 0 ❑ 0 1 0 0 0 0 0 4 27 4 6 Al 3:30 PM 4 2 0 0 6 0 0 0 0 0 1 32 3 2 38 3:45PM 2 2 0 0 4 0 0 0 0 0 0 14 1 0 15 4:00 PM 0 0 0 0 0 0 0 0 0 0 0 2 0 0 2 4:15PM 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 4:30 PM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4:45 PM 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 5:00 PM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5:15PM 0 0 0 0 0 0 0 0 0 0 0 4 0 4 8 5:30 PM 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 5:45 PM 0 0 0 0 0 0 1 0 0 1 0 1 0 1 2 Count Total 7 7 0 0 14 0 5 0 0 5 8 113 11 35 167 Peak Hr 7 4 0 0 11 0 0 0 0 0 8 77 11 19 115 Mark Skaggs: (425) 250-0777 mark.skaggs@idaxdata.com www.idaxdata.com 26 LAKE GROVE ES DROP OFF DWY Ua`, SW 308TH ST Date: Tue, Jun 19, 2018 N Peak Hour Count Period: 2:00 PM to 6:00 PM Peak Hour: 3:00 PM to 4:00 PM M 01 >cn LU T �Q a 0' M w O M to U SW 308TH ST 11 N 1 .1.:. — 1 A 3 + ? 8 TEV: 197 ' 47 83 + _ .0 o Q� PHF: 0.81 52 24 o 78 17 SW 308TH ST_77 -• 1 4 0 ~ 46 o a� CD I?00o w w � t 0 Lr7 a0 HV %: PHF Y EB 3.8% 072 g co w WB 3.6% 080 4 lJ N NB 21.7% 0.72 SB 0.0% 0.65 TOTAL 5.6% 0.81 Four -Hour Count Summaries SW 308TH ST SW 308TH ST LAKE GROVE ES DROP OFF DWY 3RD AVE SW 15-min Rolling Eastbound Westbound Northbound Southbound Interval Start Total One Hour LIT LT TH RT LIT LT TH RT LIT LT TH RT LIT LT TH RT 3:00 PM 1 2 11 1 1 1 5 1 0 3 0 4 0 1 0 2 1 33 0 3:15PM 0 2 21 4 0 10 14 0 0 2 0 6 0 1 0 1 61 0 3:30 PM 0 2 6 4 0 8 12 6 0 3 0 1 0 2 2 1 47 0 3:45 PM 0 2 14 8 0 5 16 4 0 1 0 3 0 2 1 0 56 1 197 Peak Hour 1 8 52 17 1 24 47 11 1 0 9 0 14 0 6 3 4 197 0 Note: For all three-hour count summary, see next page Interval Heavy Vehicle Totals Bicycles Pedestrians (Crossing Leg) Start EB WB NB SB Total EB WB NB SB Total East West North South Total 3:00 PM 0 0 0 0 0 0 0 0 2 2 1 4 0 12 17 3:15PM 1 0 0 0 1 0 0 0 0 0 0 7 0 16 23 3:30 PM 1 1 1 0 3 0 0 0 0 0 0 55 3 12 70 3:45 PM 1 2 4 0 7 0 0 0 0 0 0 5 0 6 11 Peak Hour 1 3 3 5 0 11 1 0 0 0 2 2 1 71 3 46 121 Mark Skaggs: (425) 250-0777 mark.skaggs@idaxdata.com www.idaxdata.com 26 Four -Hour Count Summaries SW 308TH ST SW 308TH ST LAKE GROVE ES DROP OFF DWY 3RD AVE SW 75-min Rolling Eastbound Westbound Northbound Southbound Interval Total One Hour Start UT LT TH RT UT LT TH RT UT LT TH RT UT LT TH RT 2:00 PM 0 2 8 5 0 3 12 3 0 1 0 0 0 2 0 3 39 0 2:15 PM 0 2 2 0 0 6 11 1 0 2 0 1 0 2 2 1 30 0 2:30 PM 0 0 12 0 0 0 13 0 0 1 0 2 0 4 1 0 33 0 2:45 PM 0 0 8 0 0 2 4 0 0 0 0 0 0 2 0 2 18 120 3:00 PM 1 2 11 1 1 1 5 1 0 3 0 4 0 1 0 2 33 114 3:15 PM 0 2 21 4 0 10 14 0 0 2 0 6 0 1 0 1 61 145 3:30 PM 0 2 6 4 0 8 12 6 0 3 0 1 0 2 2 1 47 159 3:45 PM 0 2 14 8 0 5 16 4 0 1 0 3 0 2 1 0 56 197 4:00 PM 0 0 13 0 0 1 5 1 0 1 0 0 0 1 0 0 22 186 4:15 PM 0 0 4 0 0 0 7 1 0 0 0 2 0 0 0 0 14 139 4:30 PM 0 0 9 0 0 1 6 1 0 0 0 2 0 2 0 0 21 113 4:45 PM 0 0 6 0 0 0 6 2 0 0 0 0 0 3 0 0 17 74 5:00 PM 0 0 8 0 0 0 10 0 0 0 0 1 0 0 0 0 19 71 5:15 PM 0 2 5 0 0 0 7 1 0 0 0 0 0 1 0 2 18 75 5:30 PM 0 0 4 0 0 0 5 3 0 0 0 0 0 0 0 1 13 67 5:45 PM 0 0 3 0 0 0 11 2 0 0 0 0 0 1 0 1 18 68 Count Total 1 14 134 22 1 1 37 144 26 0 14 0 22 0 24 6 14 459 0 Peak Hour 1 8 52 17 1 24 47 11 0 9 0 14 0 6 3 4 197 0 Note: Four-hour count summary volumes include heavy vehicles but exclude bicycles in overall count. Interval Heavy Vehicle Totals Bicycles Pedestrians (Crossing Leg) EB WB NB SB Total EB WB NB SB Total I East West North South Total Start 2:00 PM 0 0 0 0 0 0 2 0 0 2 0 4 0 0 4 2:15PM 0 0 0 0 0 0 2 0 0 2 0 0 0 1 1 2:30 PM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2:45 PM 0 1 0 0 1 0 0 0 0 0 4 0 0 6 10 3:00 PM 0 0 0 0 0 0 0 0 2 2 1 4 0 12 17 315 PIN 1 0 0 0 7 0 0 0 0 0 0 7 0 16 23 3:30 PM 1 1 1 0 3 0 0 0 0 0 0 55 3 12 70 3:45PM 1 2 4 0 7 0 0 0 0 0 0 5 0 6 11 4:00 PM 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 4:15PM 0 1 1 0 2 0 0 0 0 0 0 0 0 0 0 4:30 PM 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0 4:45 PM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5:00 PM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5:15PM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5:30 PM 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 5:45 PM 0 0 0 0 0 0 1 0 0 1 0 0 0 0 0 Count Total 3 6 7 0 16 0 5 0 2 7 5 75 3 54 137 Peak Hour 3 3 5 0 11 0 0 0 2 2 1 71 3 46 121 Mark Skaggs: (425) 250-0777 mark.skaggs@idaxdata corn www.idaxdata.com 27 LAKE GROVE ES EXIT DWY WWI. SW 308TH ST Date: Tue, Jun 19, 2018 N Peak Hour Count Period: 2:00 PM to 6:00 PM Peak Hour: 3:15 PM to 4:15 PM ti M T U LU ? LU SW 308TH ST 1 L MOO 00 0 9 n 4�0 9 2 TEV: 226 70 F 79 m a_ A `� PHF: 0.74 0 82 80 1 8 a �O CP -»-V �q 0 0 19 SW 308TH ST O N N N? G if7 F HV %: PHF EB 4.9% 0.66 WB 3.8% 0.60 Co •- Ln NB 3.4% 0.40 SB 0.0% 0.35 TOTAL 4 0% 0.74 Four -Hour Count Summaries SW 308TH ST SW 308TH ST LAKE GROVE ES EXIT DWY 2ND AVE SW 15-min Rolling Eastbound Westbound Northbound Southbound Interval Start Total One Hour UT LT TH RT UT LT TH RT UT LT TH RT UT LT TH RT 3:15 PM 0 1 30 0 0 0 22 1 0 1 0 4 0 0 0 1 60 0 3:30 PM 0 1 9 0 0 0 26 7 0 0 1 12 0 3 1 1 61 0 3:45 PM 0 0 24 0 0 0 15 1 0 10 1 25 0 0 0 0 76 0 4:00 PM 0 0 17 0 0 0 7 0 0 1 0 3 0 1 0 0 29 226 Peak Hour 1 0 2 80 0 0 0 70 9 0 12 2 44 0 4 1 2 2, 0 Note: For all three-hour count summary, see next page. Interval Heavy Vehicle Totals Bicycles Pedestrians (Crossing Leg) EB WB NB SB Total EB WB NB SB Total East West North South Total Start 3:15 PM 1 0 0 0 1 0 0 0 0 0 3 0 0 5 8 3:30 PM 0 1 0 0 1 0 0 0 0 0 14 0 1 8 23 3:45 PM 3 2 2 0 7 0 0 0 0 0 11 0 3 6 20 4:00 PM 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 Peak Hour 4 3 2 0 9 1 0 - 0 0 0 0 1 28 0 4 19 51 Mark Skaggs: (425) 250-0777 mark.skaggs@idaxdata.com www.idaxdata.com MA Four -Hour Count Summaries SW 308TH ST SW 308TH ST LAKE GROVE ES EXIT DWY 2ND AVE SW Interval 15-min Rolling Eastbound Westbound Northbound Southbound Start Total One Hour UT LT TH RT UT LT TH RT UT LT TH RT UT LT TH RT 2:00 PM 0 1 6 0 0 0 16 0 0 2 1 3 0 0 0 0 29 0 2:15 PM 0 2 7 0 0 0 13 2 0 5 0 1 0 5 0 1 36 0 2:30 PM 1 1 13 0 0 0 9 2 0 2 1 0 0 2 0 0 31 0 2:45 PM 0 0 11 0 0 0 5 2 0 2 0 1 0 1 0 0 22 118 3:00 PM 0 1 16 0 0 0 5 1 0 1 0 3 0 1 0 0 28 117 3:15 PM 0 1 30 0 0 0 22 1 0 1 0 4 0 0 0 1 60 141 3:30 PM 0 1 9 0 0 0 26 7 0 0 1 12 0 3 1 1 61 171 3:45 PM 0 0 24 0 0 0 15 1 0 10 1 25 0 0 0 0 76 225 4:00 PM 0 0 17 0 0 0 7 0 0 1 0 3 0 1 0 0 29 226 4:15 PM 0 0 6 0 0 0 7 1 0 0 0 0 0 0 0 0 14 180 4:30 PM 0 0 14 0 0 0 9 0 0 0 0 1 0 1 0 0 25 144 4:45 PM 0 0 10 0 0 0 7 2 0 0 0 0 0 1 0 0 20 88 5:00 PM 0 0 9 0 0 0 11 1 0 1 0 1 0 0 0 0 23 82 5:15 PM 0 0 5 0 0 0 5 6 0 1 0 1 0 3 0 0 21 89 5:30 PM 0 0 5 0 0 0 10 1 0 0 0 2 0 1 0 0 19 83 5:45 PM 0 0 5 0 0 0 13 3 0 0 0 0 j 0 3 0 0 24 1 87 Count Total 1 7 187 0 0 0 180 30 26 4 57 0 22 1 3 518 0 Peak Hour 0 2 80 0 0 0 70 9 ro- 12 2 44 0 4 1 2 226 0 Note: Four-hour count summary volumes include heavy vehicles but exclude bicycles in overall count Interval Heavy Vehicle Totals Bicycles Pedestrians (Crossing Leg) EB WB NB SB Total EB WB NB SB Total East West North South Total Start 2:00 PM 0 0 0 0 0 0 2 0 0 2 0 0 0 0 0 2:15PM 0 0 0 0 0 0 2 0 0 2 5 0 0 2 7 2:30 PM 0 0 0 0 0 0 0 0 0 0 2 0 0 1 3 2:45 PM 0 1 0 0 1 0 0 0 0 0 1 0 0 1 2 3:00 PM 0 0 0 0 0 2 0 0 0 2 8 0 0 3 11 3:15PM 1 0 0 0 1 0 0 0 0 0 3 0 0 5 8 3:30 PM 0 1 0 ❑ 1 0 0 0 0 0 14 0 1 8 23 3:45 PM 3 2 2 0 7 0 0 0 0 0 11 0 3 6 20 4:00 PM 0 0 0 0 0 ❑ 0 0 0 0 0 0 0 0 0 4:15PM 1 1 0 0 2 0 0 0 0 0 0 0 0 0 0 4:30 PM 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 4:45 PM 0 0 0 0 0 0 0 0 0 0 2 0 0 0 2 5:00 PM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5:15PM 0 0 0 0 0 0 0 0 0 0 0 0 0 4 4 5:30 PM 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 5:45 PM 0 0 0 0 0 0 1 0 0 1 0 0 0 0 0 Count Total 6 6 2 0 14 2 5 0 0 7 46 0 4 30 80 Peak Hour 4 3 2 0 9 0 0 0 0 0 28 0 4 19 51 Mark Skaggs: (425) 250-0777 mark skaggs@idaxdata.com www.idaxdata.com 5 1ST "E S SW 308TH ST WWI A Date: Wed, Jun 13, 2018 N Peak Hour Count Period: 4:00 PM to 6:00 PM Peak Hour: 4:00 PM to 5:00 PM � v C1 M T rn LU 4 ti l SW 308TH ST 1 L 0 T 0~ 0 O 5 13 TEV: 874 4 36 o j PHF: 0.97 30 -j C" c� 76 2 0 42 40 0 3 61 C7777 QQQQ SW 308TH ST n lLa 01 r t cn La 01 M LU Q a Q HV %: PHF u) EB 0.0% 0.79 l n WB 0.0% 0.64 O (n NB 0.0% 0.90 SB 0.5% 0.88 TOTAL 0.2% 0.97 Two -Hour Count Summaries SW 308TH ST SW 308TH ST 1ST AVE S 1ST AVE S Interval 15-min Rolling Eastbound Westbound Northbound Southbound Start Total One Hour UT LT TH RT UT LT TH RT UT LT TH RT UT LT TH RT 4:00 PM 0 4 1 17 0 10 1 1 0 11 88 6 0 1 77 3 220 0 4:15 PM 0 3 0 12 0 3 1 0 0 12 67 8 0 1 105 4 216 0 4:30 PM 0 4 0 20 0 6 0 0 0 9 74 7 0 3 89 1 213 0 4:45 PM 0 2 1 12 0 1i 2 1 0 13 70 12 0 2 99 0 225 874 5:00 PM 0 7 0 10 0 3 2 0 0 10 85 8 0 1 85 5 216 870 5:15 PM 0 1 1 4 0 5 0 0 0 16 75 7 0 2 77 1 189 843 5:30 PM 0 0 0 10 0 4 0 1 0 13 82 3 0 0 76 4 193 823 L5:45 PM 0 2 2 6 0 7 0 0 0 11 87 5 0 0 85 1 206 804 t Total 0 23 5 91 0 49 6 3 0 95 628 56 0 10 693 19 1,678 0 Hour 0 13 2 61 0 30 4 2 0 45 299 33 0 7 370 8 1 874 0 Note: Two-hour count summary volumes include heavy vehicles but exclude bicycles in overall count. Interval Heavy Vehicle Totals Bicycles Pedestrians (Crossing Leg) Start EB WB NB SB Total EB WB NB SB Total East West North South Total 4:00 PM 0 0 0 0 0 0 0 0 0 0 0 3 0 0 3 4:15PM 0 0 0 2 2 0 0 0 0 0 0 0 0 3 3 4:30 PM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4:45 PM 0 0 0 0 0 0 0 0 0 ❑ 0 0 ❑ 0 ❑ 5:00 PM 1 0 2 3 6 0 0 1 0 0 0 0 0 0 5:15PM 0 0 1 0 1 0 0 0 0 0 0 2 0 0 2 5:30 PM 0 0 1 0 1 2 0 0 0 2 0 0 0 0 0 5:45 PM 0 0 1 1 2 0 0 0 0 0 1 0 1 0 6 7 Count Total 1 0 5 6 12 2 0 1 0 3 1 0 6 0 9 15 Peak Hour 1 0 0 0 2 2 0 0 0 0 0 1 0 3 0 3 6 Mark Skaggs: (425) 250-0777 mark.skaggs@idaxdata.com Location: SW 308TH ST BTWN 1ST PL SW & 2ND AVE SW Date Range: 611212018 - 6/1812018 Site Code: 01 wax DATA SOLUTIONS Tuesday Wednesday Thursday Friday Saturday Sunday Monday 6/12/2018 6113/2018 fJ14l2o1a 6/1512016 6116/2018 611moll6 SM612018 Mid -Week Average Time EB WB Total EB WB Total EB WB Total EB WB Total EB WB Total EB WB Total EB WB Total EB WB Total 12:00 AM 6 4 10 2 +. 8 7 7 14 5 6 11 1:00 AM 3 3 r: 3 9 11 0 3 3 2 5 7 2:OOAM 3 1 4 1 0 1 1 2 3 2 1 3 3:00 AM 3 5 8 3 3 6 3 4 7 3 4 7 4:OOAM 9 4 13 3 2 5 7 4 11 6 3 10 5:00 AM 15 6 21 12 4 16 16 6 22 14 5 20 6:00 AM 29 13 42 27 12 39 20 7 27 25 11 36 7:00 AM 36 28 64 34 30 64 26 28 54 32 29 61 8:00 AM 83 82 165 76 75 151 76 83 159 78 80 158 9:00 AM 85 57 142 77 49 126 87 66 153 83 57 140 10:00 AM 18 19 37 35 16 51 28 24 52 27 20 47 11:00 AM 38 40 78 28 30 58 38 24 62 35 31 66 12:00 PM 37 38 75 34 33 67 28 29 57 33 33 66 1:00 PM 35 22 57 46 27 73 39 39 78 40 29 69 2:00 PM 32 27 59 40 33 73 46 50 96 39 37 76 3:00 PM 91 78 169 95 86 181 98 79 177 95 81 176 ,4:00 PM 38 55 93 52 45 97 46 34 80 45 45 90 :5:00 PM 31 41 72 36 51 87 35 42 77 34 45 79 15:00 PM 46 32 78 35 44 79 26 50 76 36 42 78 '7:00 PM 37 25 62 40 30 70 30 26 56 36 27 63 IB:00 PM 16 30 46 25 31 56 20 29 49 20 30 50 19:00 PM 15 13 28 18 30 48 16 24 40 16 22 39 10100 PM 11 15 26 10 16 26 6 15 21 9 15 24 11:00 PM 3 8 11 7 10 17 3 9 12 4 _ 13 dtal 720 646 1.366 739 671 1410 702 684 13116 720 667 1367 perc.ni W-A 47% 52% 48% 51'% 49% 52% 46% 1 Mid -week average includes data between Tuesday and Thursday Mark Skaggs:425-250-0777 mark skaggs@idaxdata corn Vehicle Speed Report Summa Location: SW 308TH ST BTWN 1 ST PL SW & 2ND AVE SW Count Direction: Eastbound / Westbound Date Range: 611212018to 6/14/2018 Site Code: 01 WE% DATA SOLUTIONS Speed Ran e (mph) Total 0.10 10-15 15-20 20-25 25-30 30-35 35-40 40-45 46-50 50-66 55-60 60-65 66-70 70-75 75-80 80-85 85+ Volume Study Total (Eastbound (Percent 18 0.8% 136 6.3% 698 32.3% 931 431% 318 14.7% 48 2.2% 9 0.4% 1 2 00% 0.1% 0 0.0% 0 0.0% 0 0.0% 0 0.0% 0 0.0% 0 0.0% 0 0.0% 0 0.0% 2,161 100% Westbound Percent 8 0.4%'0 127 6.3% 560 28.0% 877 43.8% 370 18.5% 54 2.7% 4 0.2% 1 0 0.0% 0.0% 0 0.0% 0 0.0% 0 0.0% 0 D.0% 0 0.0% 0 0.0% 0 0.0% 0 0.0% 2,001 10M Total Percent 26 0.6% 263 6.3% 1,258 30.2% 1,808 43.4% 688 16.5% 102 2.5% 13 03% 2 2 0.0% 0.0% 0 0.0°/a 0 O.0% 0 0.0% 0 0.0% 0 0,0% 0 0.0% 0 0.0% 0 0.0% 4,162 100% Total Study Percentile Speed Summary Total Study Speed Statistics Eastbound Eastbound 50th Percentile (Median) 21.0 mph Mean (Average) Speed 21 1 mph 85th Percentile 254 mph 10 mph Pace 16.1 - 26.1 mph 95th Percentile 286 mph Percent in Pace 786 % Westbound Westbound 50th Percentile (Median) 21.6 mph Mean (Average) Speed 21.6 mph 85th Percentile 26.1 mph 10 mph Pace 16.5 - 26.5 mph 95th Percentile 28.8 mph I Percent in Pace 76,3 % Mark Skaggs:425-250-0777 mark.skaggs@idaxdata.com Location: SW 308TH ST BTWN 1ST PL SW & 2ND AVE SW Date Range: 6/12/2018 to 6/14/2018 Site Code: 01 Tuesday, June 12,2018 A wa.), DATA SOLUTIONS Speed Rune (mph Total Time a -10 10 -15 15.20 20 - 26 25 - 30 30 - 35 35 - 40 40 - 46 45 - 50 60 - 55 55 - 60 60 - 65 65 - 70 70.75 75 - 6if $0. 86 96 + Volume 12:00 AM 0 0 2 1 3 0 0 0 0 0 0 0 0 0 0 0 a 6 1:00 AM 1 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 2:00 AM 0 0 1 2 0 0 0 0 0 0 0 0 0 0 0 0 0 3 3:00 AM 0 0 1 0 2 0 0 0 0 0 0 0 0 0 0 0 0 3 4.00 AM 0 0 1 7 1 0 0 0 0 0 0 0 0 0 0 0 0 9 5.00 AM 0 0 1 6 7 1 0 0 a 0 0 0 0 0 0 0 0 15 6:00 AM 0 0 5 8 14 2 0 0 0 0 0 0 0 0 0 0 0 29 7:00 AM 0 1 8 18 8 1 0 0 a 0 0 0 0 0 0 0 0 36 8•D❑ AM 0 3 30 41 8 1 0 0 0 0 0 0 0 0 0 0 0 83 :00 AM 0 5 43 35 1 1 0 0 a 0 0 0 0 0 0 0 0 85 10:DOAM 0 0 8 5 4 1 0 0 0 0 0 0 0 0 0 0 0 18 11-00 AM 0 0 7 26 4 1 0 0 0 0 0 0 0 0 0 0 0 38 12:00 PM 0 4 12 16 5 0 0 0 a 0 0 0 0 0 0 0 0 37 I. DO PM 0 1 9 14 10 0 1 0 0 0 0 0 0 0 0 0 0 35 2:00 PM 0 2 12 12 6 0 0 0 0 0 0 0 0 0 0 0 0 32 300 PM 2 21 41 23 4 0 0 0 0 0 0 0 0 0 0 0 0 91 4 00 PM 0 0 12 14 12 0 0 0 0 0 0 0 0 0 0 0 0 38 5100 PM 1 0 5 19 6 0 0 0 0 0 0 0 0 0 0 0 ❑ 31 6.00 PM 0 3 11 23 9 0 0 0 0 0 0 0 0 0 0 0 0 46 7:00 PM 0 2 11 17 6 1 0 0 0 0 0 0 0 0 0 0 0 37 8:00 PM 1 1 6 4 3 1 0 0 a 0 0 0 0 0 0 0 ❑ 16 9.00PM 0 0 1 9 4 1 0 0 0 0 0 0 0 0 0 0 0 15 10100 PM 0 0 2 7 1 0 0 1 0 0 0 0 0 0 0 0 0 11 11:00 PM 0 0 2 1 0 a 0 0 a 0 0 0 0 0 0 0 0 3 Total 5 43 233 308 118 11 1 1 0 0 0 0 0 0 0 0 0 720 Percent a.7% 6,0% 37-4% 42.8% 16.4% 1.5% 0.1% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.11% 0.0% 0.0% Daily Percentile Speed Summary Se2ed Statistics 50th Percentile (Median) 21.0 mph Mean (Average) Speed 21.2 mph 85th Percentile 25.4 mph 10 mph Pace 16.5 - 26.5 mph 95th Percentile 28.0 mph Percent in Pace 79.4 Mark Skaggs:425-250-0777 mark.skaggs@idaxdata.com Location: SW 308TH ST BTWN 1ST PL SW & 2ND AVE SW Date Range: 6/1212018 to 6/14/2018 Site Code: 01 Tuesday, June 12,2018 b I C-01 - DATA SOLUTIONS Speed Ran e m h Total Time 0-10 10 -16 15 - 20 20 - 25 25.30 30 - 35 36. 40 40 - 45 45 - 50 50 - 55 55 - 60 60 - 65 65 - 70 70 - 75 75 - 80 80 - 85 85 + Volume 12:00 AM 0 0 0 2 1 1 0 0 0 0 D 0 0 0 0 0 0 4 1:00 AM 0 0 0 3 0 0 0 0 0 0 0 0 0 0 0 0 0 3 2:00 AM 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 3:00 AM 0 1 0 2 2 0 0 0 0 0 0 ❑ 0 0 0 0 0 5 4:00 AM 0 0 1 1 2 0 0 0 0 0 0 0 0 0 0 0 0 4 5:00 AM 0 0 1 3 1 0 0 1 0 0 0 0 0 0 0 0 0 6 6:00 AM 0 0 3 6 4 0 0 0 0 0 0 0 0 0 0 0 0 13 7:00 AM 0 0 3 14 11 0 0 0 0 0 0 0 0 0 0 0 0 28 8:00 AM 0 6 25 40 7 4 0 0 0 0 0 0 0 0 0 0 0 82 9:00 AM 0 6 23 20 7 1 0 0 0 0 0 0 0 0 0 0 0 57 10:00 AM 0 0 1 7 9 1 1 0 0 0 0 0 0 0 0 0 0 19 11:00 AM 1 4 13 11 11 0 0 0 0 0 0 0 0 0 0 0 0 40 12:00 PM 0 0 15 16 7 0 0 0 0 0 0 0 0 0 0 0 0 38 1:00 PM 0 0 8 11 3 0 0 0 0 0 0 0 0 0 0 0 0 22 2:00 PM 0 0 4 17 3 3 0 0 0 0 0 0 0 0 0 0 0 27 3:00 PM 0 8 38 27 5 0 0 0 0 0 0 0 0 0 0 0 0 78 4:00 PM 1 3 10 30 11 0 0 0 0 0 0 0 0 0 0 0 0 55 5:00 PM 0 1 11 17 10 2 0 0 ❑ ❑ 0 0 0 0 0 0 0 41 6:00 PM 0 1 5 13 10 3 0 0 0 0 0 0 0 0 0 0 0 32 7:00 PM 0 1 5 12 4 3 0 0 0 0 0 0 0 0 0 0 0 25 -B:00 PM 0 1 5 12 8 4 0 0 0 ❑ 0 0 0 0 0 0 0 30 •9:00 PM 0 0 2 8 3 0 0 0 0 0 0 0 0 0 0 0 0 13 10:00 PM 0 0 2 8 5 0 0 0 0 ❑ 0 0 0 0 0 0 0 15 11:00 PM 0 0 1 6 1 0 0 0 0 0 0 0 0 0 0 0 0 8 Total 2 32 176 287 125 22 1 1 0 0 0 0 0 0 0 0 0 646 Percent 0.3% 5,0% 27.2% 44.4% 19.3% 3.4% 0.2% 0.20/6 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% Daily Percentile Speed Summary Speed Statistics 50th Percentile (Median) 21.8 mph Mean (Average) Speed 21.9 mph 85th Percentile 26.2 mph 10 mph Pace 16.8 - 26.8 mph 95th Percentile 28.9 mph Percent in Pace 78.64 % Mark Skaggs:425-250-0777 mark.skaggs@idaxdata com Location: SW 308TH ST BTWN 1ST PL SW & 2ND AVE SW Date Range: 6/12/2018 to 6/14/2018 Site Code: 01 Wednesday, June 13, 2018 Eastbound ww. DATA SOLUTIONS S Range m h Total Time 0.10 10-15 15 - 20 20 - 25 25 - 30 30 - 35 35.40 40 - 45 46 - 50 60 - 66 65 - 60 60 - 65 65 - 70 70.75 75.80 s0 •85 86 + Volume 12:00 AM 0 0 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 2 1:00 AM 0 0 2 1 0 0 0 0 0 0 0 0 0 0 0 0 0 3 200AM 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 1 3:00 AM 0 0 1 2 0 0 0 0 0 0 0 0 0 0 0 0 0 3 4:00 AM 0 0 0 2 1 0 0 0 0 0 0 0 0 0 0 0 0 3 5.00 AM 0 0 1 5 6 0 0 0 0 0 0 0 0 0 0 0 0 12 6:00 AM 0 1 7 10 6 3 0 0 0 0 0 0 0 0 0 0 0 27 7:00 AM 0 0 13 14 6 1 0 0 D 0 0 0 0 0 0 0 0 34 8 00 AM 0 7 37 24 8 0 0 0 0 0 0 0 0 0 0 0 0 76 9:00 AM 0 6 31 36 4 0 0 0 0 0 0 0 0 0 0 0 0 77 10:00 AM 0 1 12 14 3 4 1 0 0 0 0 0 0 0 0 0 0 35 11:00 AM 0 1 9 13 5 0 0 0 0 0 0 0 0 0 0 0 0 28 12:00 PM 0 2 10 17 4 1 0 0 0 0 0 0 0 0 0 0 0 34 1.00 PM 0 2 15 21 4 3 0 0 1 0 0 0 0 0 0 0 0 46 2:00 PM 0 2 6 24 8 0 0 0 0 0 0 0 0 0 0 0 0 40 3: DO PM 2 20 43 27 2 1 0 0 0 0 0 0 0 0 0 0 0 96 4:00 PM 0 0 10 25 14 3 0 0 0 0 0 0 0 0 0 0 0 52 51DO PM 0 2 5 14 12 2 1 0 0 0 0 0 0 0 0 0 0 36 00 PM 0 0 10 15 9 1 0 0 0 0 0 0 0 0 0 0 0 35 :00 PM 1 1 14 16 7 1 0 0 0 0 0 0 0 0 0 0 0 40 5.00 PM 1 0 7 14 3 0 0 0 0 0 0 0 0 0 0 0 0 25 9:00PM 0 0 5 8 5 0 0 0 0 0 0 0 0 0 0 0 0 18 10:00 PM 0 0 4 4 2 0 0 0 0 0 0 0 0 0 0 0 0 10 11:00 PM 0 0 1 4 0 2 0 0 0 0 0 0 0 0 0 0 0 7 Total 4 46 244 310 109 23 3 D 1 0 0 0 0 0 0 0 0 T39 Fament 0.5% 6.1% 33.D% 41.9°A %7% 3.1% 0.4% 0.0% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% Daily Percentile Speed Summary Speed Statistics 50th Percentile (Median) 21.1 mph Mean (Average) Speed 21.3 mph 85th Percentile 25.6 mph 10 mph Pace 16.1 - 26.1 mph 95th Percentile 29.2 mph Percent in Pace 78.9 % Mark Skaggs:425-250-0777 mark.skaggs@idaxdata.com Location: SW 308TH ST BTWN 1ST PL SW & 2ND AVE SW Date Range: 6/12/2018 to 6/14/2018 Site Code: 01 Wednesday, June 13, 2018 kfc-01 DATA SOLUTIONS Speed Ran (Mph) Total Time 0-10 10-15 15-20 20 - 25 26.30 30. 35 35 - 40 40 - 46 45 - 50 60 - 55 56.60 60 - 66 65 - 70 70 - 76 76.80 80 - 85 86 + Volume 12:00 AM 0 1 1 2 2 0 0 0 0 0 0 0 0 0 0 0 0 6 1:00 AM 0 0 0 6 1 1 0 0 0 0 0 0 0 0 0 0 0 8 2:00 AM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3:DO AM 0 0 0 2 1 0 0 0 0 0 0 0 0 0 0 0 0 3 4:00 AM 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 2 5:00 AM 0 0 0 2 2 0 0 0 0 0 0 0 0 0 0 0 0 4 6:00 AM 0 0 3 7 1 1 0 0 0 0 0 0 0 0 0 0 0 12 7:00 AM 0 0 3 17 8 2 0 0 0 0 0 0 0 0 0 0 0 30 6 00 AM 0 6 42 20 6 1 0 0 0 0 0 0 0 0 0 0 0 75 9:00 AM 0 1 21 19 8 0 0 0 0 0 0 0 0 0 0 0 0 49 10:00 AM 0 1 2 6 7 0 0 0 0 0 0 0 0 0 0 0 0 16 11 OOAM 0 1 12 13 3 1 0 0 0 0 0 0 0 0 0 0 0 30 12.00 PM 0 4 9 14 5 1 0 0 0 0 0 0 0 0 0 0 0 33 1:00 PM 0 1 4 15 4 3 0 0 0 0 0 0 0 0 0 0 0 27 2:00 PM 0 2 4 18 9 0 0 0 0 0 0 0 0 0 0 0 0 33 3:00 PM 2 18 35 24 5 2 0 0 0 0 0 0 0 0 0 0 0 56 4.00 PM 0 2 8 25 10 0 0 0 0 0 0 0 0 0 0 0 0 45 5:0❑ PM 0 2 6 29 12 2 0 0 0 0 0 0 0 0 0 0 0 51 6:00 PM 0 1 6 19 17 1 0 0 0 0 0 0 0 0 0 0 0 44 7:00 PM 0 2 7 15 4 2 0 0 0 0 0 0 0 0 0 0 0 30 Boo PM 0 1 8 14 7 1 0 0 0 0 0 0 0 0 0 0 0 31 9:00 PM 0 5 7 11 7 0 0 0 0 0 0 0 0 0 0 0 0 30 10.00 PM 0 0 5 5 4 2 0 0 0 0 0 0 0 0 0 0 0 16 11:00 PM 0 ❑ 1 6 3 0 0 0 0 0 0 0 0 0 0 0 0 10 iotfl 2 48 184 291 126 20 0 0 0 0 0 0 0 0 0 0 0 671 Percent 0.3% 7.2% 27.495 43A% 1&8% 3.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0r "% Daily Percentile Speed Summary Speed Statistics 50th Percentile (Median) 21.8 mph Mean (Average) Speed 21.6 mph 85th Percentile 26.2 mph 10 mph Pace 16.6 - 26 6 mph 95th Percentile 28.9 mph Percent in Pace 75.56 % Mark Skaggs:425-250-0777 mark.skaggs@idaxdata com Location: SW 308TH ST BTWN 1ST PL SW & 2ND AVE SW Date Range: 6/12/2018 to 6114/2018 Site Code: 01 Thursday, June 14, 2018 ww( DATA SOLUTIONS Speed Range (mplij Total rime 0.10 10-15 16 - 20 20 - 25 25.30 30 - 35 35.40 40.46 46. 50 50 - 55 55 - 60 60 - 65 65.10 70 - 76 75 .80 80 - 85 85 + Volume 12:00 AM 0 0 2 3 1 1 0 0 0 0 0 0 0 0 0 0 0 7 1:00 AM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2:00AM 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 3 00 AM 0 0 0 2 1 0 0 0 0 0 0 0 0 0 0 0 0 3 4-00 AM 0 0 3 1 3 0 0 0 0 0 0 0 0 0 0 0 0 7 5•.00 AM 0 0 3 11 0 2 0 0 0 0 0 0 0 0 0 0 0 16 5:00 AM 0 0 5 7 7 1 0 0 0 0 0 0 0 0 0 0 0 20 7:00 AM 0 0 8 11 5 2 0 0 0 0 0 0 0 0 0 0 0 26 6 00 AM 0 7 30 34 5 0 0 0 0 0 0 0 0 0 0 0 0 76 9:00 AM 1 4 45 28 9 0 0 0 0 0 0 0 0 0 0 0 0 87 10-OD AM 0 0 10 14 4 0 0 0 0 0 0 0 0 0 0 0 0 28 11:00 AM 0 1 15 18 3 0 1 0 0 0 0 0 0 0 0 0 0 38 12:00 PM 0 1 4 18 4 1 0 0 0 0 0 0 0 0 0 0 0 28 1:00 PM 0 2 10 21 2 1 2 0 1 0 0 0 0 0 0 0 0 39 2:00 PM 0 2 15 23 5 1 0 0 0 0 0 0 0 0 0 0 0 46 3:00 PM 5 21 36 32 4 0 0 0 0 0 0 0 0 0 0 0 0 98 41D0 PM 0 0 2 25 17 1 1 0 0 0 0 0 0 0 0 0 0 46 5:00 PM 1 0 7 21 3 3 0 0 0 0 0 0 0 0 0 0 0 35 6:DD PM 0 2 7 12 4 1 D 0 0 0 0 0 0 0 0 0 0 26 7:00 PM 0 4 9 12 5 0 0 0 0 0 0 0 0 0 0 0 0 30 5.00 PM 2 3 7 7 1 0 0 0 0 0 0 0 0 0 0 0 0 20 ROD PM 0 1 3 8 4 0 0 0 0 0 0 0 0 0 0 0 0 16 10:00 PM 0 0 0 3 3 0 0 0 0 0 0 0 0 0 0 0 0 6 11 -_00 PM 0 0 0 2 0 0 1 0 0 0 0 0 0 0 0 0 0 3 Total 9 48 221 313 91 14 5 0 1 0 0 0 0 0 0 0 0 702 Percent 1,3% 8.8% 31.5% 44.69A 13.0% 20% 0.7% 0.014 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% Daily Percentile Speed Summary Speed Statistics 50th Percentile (Median) 21 0 mph Mean (Average) Speed 20.9 mph 85th Percentile 25.1 mph 10 mph Pace 16.2 - 26.2 mph 95th Percentile 28.3 mph Percent in Pace 78.6 Mark Skaggs:425-250-0777 mark.skaggs@idaxdata com Location: SW 308TH ST BTWN 1ST PL SW & 2ND AVE SW Date Range: 6/12/2018 to 6/14/2018 Site Code: 01 Thursday, June 14, 2018 WWI DATA SOLUTIONS Speed Ran h Total Time 0-10 10.15 16-20 20-25 25-30 30-35 36-40 40-45 46.50 50-55 56-60 60-65 65-70 70-76 75-80 80-86 85+ Volume 1200AM 0 0 0 5 2 0 0 0 0 0 0 0 0 0 0 0 0 7 1:00 AM 0 0 1 2 0 0 0 0 0 0 0 0 0 0 0 0 0 3 2:00 AM 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 2 3= AM 0 0 0 1 3 0 0 0 0 0 0 0 0 0 0 0 0 4 A 00 AM 0 0 1 2 0 1 0 0 0 0 0 0 0 0 0 0 0 4 5,00 AM 0 0 0 3 2 1 ❑ 0 0 0 0 D 0 0 0 0 0 6 :OOAM 0 0 0 5 1 1 0 0 0 0 0 0 0 0 0 0 0 7 7:00 AM 0 0 2 17 9 0 0 0 0 0 0 0 0 0 0 0 0 28 8 00 AM 2 13 38 22 8 0 0 0 0 0 0 0 0 0 0 0 0 83 9:00 AM 1 5 32 21 6 1 0 0 0 0 0 0 0 0 0 0 0 66 10 00 AM 0 1 6 9 5 1 2 0 0 0 0 0 0 0 0 0 0 24 11:00 AM 0 1 8 10 4 1 0 0 0 0 0 0 0 0 0 0 0 24 12:00 PM 0 1 9 15 4 0 0 0 0 0 0 0 0 0 0 0 0 29 1:00 PM 0 2 12 18 6 1 0 0 0 0 0 0 0 0 0 0 0 39 2:OD PM 0 5 12 21 11 0 1 0 0 0 0 0 0 0 0 0 0 50 3:00 PM 0 5 37 31 5 1 0 0 0 0 0 0 0 0 0 0 0 79 4 00 PM 0 0 7 17 9 1 0 0 0 0 ❑ 0 0 0 0 0 0 34 5:00 PM 0 0 6 25 11 0 0 0 0 0 0 0 0 0 0 0 0 42 6:00 PM ❑ 4 12 27 7 0 0 0 0 0 ❑ 0 0 0 0 0 0 50 7:00 PM 1 1 5 14 5 0 0 0 0 0 0 0 0 0 0 0 0 26 8 OD PM ❑ 8 7 10 3 1 0 0 0 0 0 0 0 0 0 0 0 29 9.OD PM 0 1 1 14 7 1 0 0 0 0 0 0 0 0 0 0 0 24 1000PM 0 0 2 6 6 1 0 0 0 0 0 0 0 0 0 0 0 15 11:00 PM 0 0 2 3 4 0 0 0 0 0 0 0 0 0 0 0 0 9 7ota1 4 47 200 299 119 12 3 0 0 0 0 0 0 0 0 0 0 684 Aement 0.6% 6.9°/0 29.2% 43.7% 17.4% 1.8% 0.4% 0.0% 0.0% 0.0% 0.0% 0.0% 0,0% D.0°6 0.0% 0.0% 0.0% Daily Percentile Speed Summary Speed Statistics 50th Percentile (Median) 21.4 mph Mean (Average) Speed 21.3 mph 85th Percentile 25.8 mph 10 mph Pace 16.4 - 26.4 mph 95th Percentile 28.5 mph Percent in Pace 76.17 Mark Skaggs:425-250-0777 mark skaggs@idaxdata.com Location: SW 308TH ST BTWN 1ST PL SW & 2ND AVE SW Date Range: 6112/2018 to 6/14/2018 Site Code: 01 Total Study Average kfa-)- DATA SOLUTIONS Speed Range [mph) Total Time 0.10 10 -16 16.20 20 - 25 25 - 30 30 - 35 35-40 40.46 46.50 60. 55 55 - 60 60 - 65 65.70 70 - 7S 75 - 80 80 - 85 86 + Volume 12.00 AM 0 0 2 1 1 0 0 0 0 0 0 0 ❑ 0 0 0 0 4 1-00 AM 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2:00 AM 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 3.00 AM 0 0 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 3 4 00 AM 0 0 1 3 2 0 0 0 0 0 0 0 0 0 0 0 0 6 5•.00 AM 0 0 2 7 4 1 0 0 0 0 0 0 0 0 0 0 0 14 6:00 AM 0 0 6 8 9 2 0 0 0 0 0 0 0 0 0 0 0 25 T00 AM 0 0 10 14 6 1 0 0 0 0 0 0 0 0 0 0 0 31 8:00 AM 0 6 32 33 7 0 0 0 0 0 0 0 0 0 0 0 0 78 9:00 AM 0 6 40 33 5 0 ❑ 0 0 0 0 0 0 0 0 0 0 83 10:00 AM 0 0 10 11 4 2 0 0 0 0 0 0 0 0 0 0 0 27 11:00 AM 0 1 10 19 4 0 0 0 0 0 0 0 0 0 0 0 0 34 12:00 PM 0 2 9 17 4 1 0 0 0 0 0 0 0 0 0 0 0 33 1,00 PM 0 2 11 19 5 1 1 0 1 0 0 0 0 0 0 0 0 40 2:00 PM 0 2 11 20 6 0 0 0 0 0 0 0 0 0 0 0 0 39 00 PM 3 21 40 27 3 0 0 0 0 0 0 0 0 0 0 0 0 94 4.00 PM 0 0 8 21 14 1 0 0 0 0 0 0 0 0 0 0 0 44 :00 PM 1 1 6 18 7 2 0 0 0 0 0 0 0 0 0 0 0 35 8:00 PM 0 2 9 17 7 1 0 0 0 0 0 0 0 0 0 0 0 36 7:00 PM 0 2 11 15 6 1 0 0 0 0 0 0 0 0 0 0 0 35 8:013PM 1 1 7 8 2 0 0 0 0 0 0 0 0 0 0 0 0 19 9:00PM 0 0 3 8 4 0 0 0 0 0 0 0 0 0 0 0 0 15 10:00 PM 0 0 2 5 2 0 0 0 0 0 0 0 0 0 0 0 0 9 11 00 PM 0 0 1 2 0 1 0 0 0 0 0 0 0 0 0 0 0 4 7atal 6 45 233 308 103 14 1 0 1 0 0 0 0 0 0 0 0 710 Percent 0.7% 6.5% 37-81i 43.41/6 14.5% 2.0% 0.1% 0.0% 0,19E 0.0% 0.0% 0.0% 0.0% 0,0% 0.0% 0A% 0.0% Note: Average only condsidered on days with 24-hours of data Total Study Percentile Speed Summary Total Study Speed Statistics 50th Percentile (Median) 21 0 mph Mean (Average) Speed 21 1 ]ph 85th Percentile 25.4 mph 10 mph Pace 16.1 - 26 1 95th Percentile 28.6 mph Percent in Pace 786 Mark Skaggs:425-250-0777 mark.skaggs@idaxdata.com Location: SW 308TH ST BTWN 1ST PL SW & 2ND AVE SW Date Range: 6/12/2018 to 6/14/2018 Site Code: 01 Total Study Average Westbound eco, DATA SOLUTIONS S eed Range (Mph) Total Time 0-10 10-15 15.20 20.25 25 - 30 30 - 35 35 - 40 40 - 45 45 - 60 50.55 55 - 60 60 - 65 66 - 70 70 - 75 75 - 60 80.05 8s + Volume 12:00AM 0 0 0 3 2 0 0 0 0 0 0 0 0 0 0 0 0 5 1:00 AM 0 0 0 4 0 0 0 0 0 0 0 0 0 0 0 0 0 4 2:00AM 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 3!00 AM 0 0 0 2 2 0 0 0 0 0 0 0 0 0 0 0 0 4 4.00 AM 0 0 1 2 1 0 0 0 0 0 0 0 0 0 0 0 0 4 5:00AM 0 0 0 3 2 0 0 0 0 0 0 0 0 0 0 0 0 5 6DOAM 0 0 2 6 2 1 0 0 0 0 0 0 0 0 0 0 0 11 7:00 AM 0 0 3 16 9 1 0 0 0 0 0 0 0 0 0 0 0 29 8:00 AM 1 8 35 27 7 2 0 0 0 0 0 0 0 0 0 0 0 80 R00 AM 0 4 25 20 7 1 0 0 0 0 0 0 0 0 0 0 0 57 10:00 AM 0 1 3 7 7 1 1 0 0 0 0 0 0 0 0 0 0 20 1V00AM 0 2 11 11 6 1 0 0 0 0 0 0 0 0 0 0 0 31 12:00 PM 0 2 11 15 5 0 0 0 0 0 0 0 0 0 0 0 0 33 1:00 PM 0 1 8 15 4 1 0 0 0 0 0 0 0 0 0 0 0 29 2:00 PM 0 2 7 19 8 1 0 0 0 0 0 0 0 0 0 0 0 37 3700 PM 1 10 37 27 5 1 0 0 0 0 0 0 0 0 0 0 0 81 4:00 PM 0 2 8 24 10 0 0 0 0 0 0 0 0 0 0 0 0 44 5100 PM 0 1 8 24 11 1 0 0 0 0 0 0 0 0 0 0 0 45 6:00 PM 0 2 8 20 11 1 0 0 0 0 0 0 0 0 0 0 0 42 7:00 PM 0 1 6 14 4 2 0 0 0 0 0 0 0 0 0 0 0 27 6100 PM 0 3 7 12 6 2 0 0 0 0 0 0 0 0 0 0 0 30 9:00 PM 0 2 3 11 6 0 0 0 0 0 0 0 0 0 0 0 0 22 10 00 PM 0 0 3 6 5 1 0 0 0 0 0 0 0 0 0 0 0 15 11:00 PM 0 0 1 5 3 0 0 0 0 0 0 0 0 0 0 0 0 9 T0ta1 2 41 1a7 294 123 17 1 0 0 0 0 0 0 0 0 0 0 865 Percent 0.3% 6.2% 28.1% 44.2% 18.5% 2.6% 0.29/6 0.0% 0.0% 0.0 % 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% Note: Average ony condsidered on days wkh 24-hours of data Total Study Percentile Speed Summary Total Study Seed Statistics 50th Percentile (Median) 21.6 mph Mean (Average) Speed 21.6 mph 85th Percentile 26.1 mph 10 mph Pace 16 5 - 26.5 mph 95th Percentile 28.8 mph Percent in Pace 76.3 % Mark Skaggs:425-250-0777 mark skaggs@idaxdata.com ATTACHMENT B Intersection LOS Summary Sheets TENW HCM 2010 AWSC 1: 8th Ave SW & SW 308th St 10/23/2018 Intersection Intersection Delay, s/veh 7.4 Intersection LOS A Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations 4)- 4 Traffic Vol, veh/h 1 25 1 13 9 9 0 28 24 9 29 2 Future Vol, veh/h 1 25 1 13 9 9 0 28 24 9 29 2 Peak Hour Factor 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 Heavy Vehicles, % 4 4 4 3 3 3 8 8 8 3 3 3 Mvmt Flow 1 33 1 17 12 12 0 37 32 12 39 3 Number of Lanes 0 1 0 0 1 0 0 1 0 0 1 0 Approach EB WB NB SB Opposing Approach WB EB SB NB Opposing Lanes 1 1 1 1 Conflicting Approach Left SB NB EB WB Conflicting Lanes Left 1 1 1 1 Conflicting Approach Right NB SB WB EB Conflicting Lanes Right 1 1 1 1 HCM Control Delay 7.4 7.4 7.3 7.5 HCM LOS A A A A Lane NBLn1 EBLn1 WBLn1 SBLn1 Vol Left, % 0% 4% 42% 23% Vol Thru, % 54% 93% 29% 72% Vol Right, % 46% 4% 29% 5% Sign Control Stop Stop Stop Stop Traffic Vol by Lane 52 27 31 40 LT Vol 0 1 13 9 Through Vol 28 25 9 29 RT Vol 24 1 9 2 Lane Flow Rate 69 36 41 53 Geometry Grp 1 1 1 1 Degree of Util (X) 0.076 0.042 0.047 0.062 Departure Headway (Hd) 3.934 4.198 4.1 4.154 Convergence, Y/N Yes Yes Yes Yes Cap 904 845 865 857 Service Time 1.986 2.263 2.165 2.206 HCM Lane V/C Ratio 0.076 0.043 0.047 0.062 HCM Control Delay 7.3 7.4 7.4 7.5 HCM Lane LOS A A A A HCM 95th-tile Q 0.2 0.1 0.1 0.2 Federal Way School District - Lake Grove Elementary School 5:00 pm 06/19/2018 2018 Existing AM Peak LOS Synchro 10 Report TENW Page 1 HCM 2010 TWSC 2: West Drivewa Ath Ave SW & SW 308th St 10/23/2018 Intersection Int Delay, s/veh 2.5 Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations 4r 41� Traffic Vol, veh/h 0 51 18 7 20 1 12 0 8 5 0 1 Future Vol, veh/h 0 51 18 7 20 1 12 0 8 5 0 1 Conflicting Peds, #/hr 2 0 17 22 0 7 17 0 22 7 0 2 Sign Control Free Free Free Free Free Free Stop Stop Stop Stop Stop Stop RT Channelized None - None - None - None Storage Length - - Veh in Median Storage, # 0 0 - 0 0 Grade, % 0 0 - 0 0 Peak Hour Factor 55 55 55 55 55 55 55 55 55 55 55 55 Heavy Vehicles, % 7 7 7 0 0 0 0 0 0 17 17 17 Mvmt Flow 0 93 33 13 36 2 22 0 15 9 0 2 Major/Minor Maiorl Ma'or2 Minorl Minor2 Conflicting Flow All 45 0 0 148 0 0 213 203 154 209 218 61 Stage 1 - - - - 132 132 70 70 Stage 2 - - 81 71 139 148 - Critical Hdwy 4.17 4.1 7.1 6.5 6.2 7.27 6.67 6.37 Critical Hdwy Stg 1 - - 6.1 5.5 - 6.27 5.67 - Critical Hdwy Stg 2 - - 6.1 5.5 - 6.27 5.67 Follow-up Hdwy 2.263 2.2 3.5 4 3.3 3.653 4.153 3.453 Pot Cap-1 Maneuver 1531 1446 748 697 897 717 655 964 Stage 1 - 876 791 - 904 808 - Stage 2 - 932 840 - 829 747 - Platoon blocked, % Mov Cap-1 Maneuver 1522 1419 717 674 864 683 633 945 Mov Cap-2 Maneuver - - 717 674 - 683 633 - Stage 1 860 777 - 899 796 Stage 2 - 909 827 - 800 734 - Approach EB WB NB SIB HCM Control Delay, s 0 1.9 9.9 10.1 HCM LOS A B Minor Lane/Maior Mvmt NBLn1 EBL EBT EBR WBL WBT WBR SBLn1 Capacity (veh/h) 769 1522 - 1419 716 HCM Lane V/C Ratio 0.047 - - 0.009 - 0.015 HCM Control Delay (s) 9.9 0 - 7.6 0 10.1 HCM Lane LOS A A - A A B HCM 95th %tile Q(veh) 0.1 0 - 0 - 0 Federal Way School District - Lake Grove Elementary School 5:00 pm 06/19/2018 2018 Existing AM Peak LOS Synchro 10 Report TENW Page 2 HCM 2010 TWSC 3: West Driveway - 2 & SW 308th St 10/23/2018 Intersection Int Delay, s/veh 0.6 Movement EBT EBR W8L WBT NBL NBR Lane Configurations T <4 Y Traffic Vol, veh/h 44 20 8 28 0 0 Future Vol, veh/h 44 20 8 28 0 0 Conflicting. Peds, Or 0 5 0 0 5 0 Sign Control Free Free Free Free Stop Stop RT Channelized None wane - None Storage Length - - - - 0 Veh in Median Storage, # 0 - - 0 0 Grade, % 0 - - 0 0 Peak Hour Factor 66 66 66 66 66 66 Heavy Vehicles, % 9 9 6 6 8 8 Mvmt Flow 67 30 12 42 0 0 Moor/Minor Maori Maor2 Minorl Conflicting Flow All 0 0 102 0 158 87 Stage 1 - - - 87 - Stage 2 - 71 - Critical Hdwy - 4.16 - 6.48 6.28 Critical Hdwy Stg 1 - - 5.48 - Critical Hdwy Stg 2 - - - 5.48 - Follow-up Hdwy - - 2.254 - 3.572 3.372 Pot Cap-1 Maneuver - - 1465 - 819 955 Stage 1 - - - - 921 - Stage 2 - - - - 937 - Platoon blocked, % - - Mov Cap-1 Maneuver - - 1459 - 806 951 Mov Cap-2 Maneuver - - - - 806 - Stag61 - - - 910 - Stage 2 - - 933 - Approach EB WB NB- HCM Control Delay, s 0 1.7 0 HCM LOS A Minor Lane/Major Mvmt N81.n1 EBT EBR WBL WBT Capacity (vehlh) - 1459 - HCM Lane V/C Ratio - 0.008 - HCM Control Delay (s) 0 7.5 0 HCM Lane LOS A - A A HCM 95th %tile Q(veh) - - 0 - Federal Way School District - Lake Grove Elementary School 5:00 pm 06/19/2018 2018 Existing AM Peak LOS Synchro 10 Report TENW Page 3 HCM 2010 TWSC 4: Center Drivewa /3rd Ave SW & SW 308th St 10/23/2018 Intersection Int Delay, s/veh 4 Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations Traffic Vol, veh/h 0 20 19 35 36 4 7 1 18 4 1 0 Future Vol, veh/h 0 20 19 35 36 4 7 1 18 4 1 0 Conflicting Peds, #/hr 14 0 23 10 0 1 23 0 10 1 0 14 Sign Control Free Free Free Free Free Free Stop Stop Stop Stop Stop Stop RT Channelized - None None None - None Storage Length - - Veh in Median Storage, # - 0 0 0 0 Grade, % - 0 -3 0 0 Peak Hour Factor 53 53 53 53 53 53 53 53 53 53 53 53 Heavy Vehicles, % 5 5 5 5 5 5 23 23 23 0 0 0 Mvmt Flow 0 38 36 66 68 8 13 2 34 8 2 0 Major/Minor Maiorl Ma'or2 Minor1 Minor2 Conflicting Flow All 90 0 0 97 0 0 307 301 89 302 315 109 Stage 1 - - - - - 79 79 - 218 218 Stage 2 - 228 222 84 97 - Critical Hdwy 4.15 4.15 7.33 6.73 6.43 7.1 6.5 6.2 Critical Hdwy Stg 1 - - - 6.33 5.73 - 6.1 5.5 - Critical Hdwy Stg 2 - - - 6.33 5.73 - 6.1 5.5 - Follow-up Hdwy 2.245 2.245 3.707 4.207 3.507 3.5 4 3.3 Pot Cap-1 Maneuver 1486 1478 - 606 578 914 654 604 950 Stage 1 - - - 880 790 - 789 726 - Stage 2 - - - 730 682 - 929 819 - Platoon blocked, % Mov Cap-1 Maneuver 1469 1450 - 560 533 889 593 557 921 Mov Cap-2 Maneuver - - 560 533 - 593 557 - Stage 1 - 863 775 - 780 683 - Stage 2 - 680 642 - 884 803 - Approach EB WB NB SIB HCM Control Delay, s 0 3.5 10.1 11.3 HCM LOS B B Minor Lane/Maior Mvmt NBLn1 EBL EBT EBR WBL WBT WBR SBLn1 Capacity (veh/h) 751 1469 1450 585 HCM Lane V/C Ratio 0.065 - 0.046 0.016 HCM Control Delay (s) 10.1 0 7.6 0 11.3 HCM Lane LOS B A A A B HCM 95th %tile Q(veh) 0.2 0 0.1 - 0 Federal Way School District - Lake Grove Elementary School 5:00 pm 06/19/2018 2018 Existing AM Peak LOS Synchro 10 Report TENW Page 4 HCM 2010 TWSC 5: East Driveway & SW 308th St 10/23/2018 Intersection Int Delay, s/veh 2.5 Movement EBT EBR WBL WBT NBL NBR Lane Configurations t + Y Traffic Vol, vehlh 41 0 0 67 4 35 Future Vol, veh/h 41 0 0 67 4 35 Conflicting Peds, #/hr 0 2 8 0 2 8 Sign Control Free Free Free Free Stop Stop RT Channelized - None - None - None Storage Length - - - - 0 - Veh in Median Storage_, # 0 - - 0 0 - Grade, % 6 - - -10 6 - Peak Hour Factor 50 50 50 50 50 56 Heavy Vehicles, % 21 21 4 4 0 0 Mvmt'Flow 82 0 0 134 8 70 Major/Minor Wjorl Ma'or2 Minor1 Conflicting Flow All 0 - 218 90 Stage 1 - - 82 - Stage 2 - - 136 - Critical Hdwy - - 7.6 6.8 Critical Hdwy Stg 1 - - 6.6 - Critical Hdwy % 2 - - 6.6 - Follow-up Hdwy - - 3.5 3.3 Pot Cap-1 Maneuver - 0 0 720 959 Stage 1 - 0 0 921 - Stage 2 - 0 0 856 - Platoon blocked, % - - Mov Cap-1 Maneuver - - - 719 953 Mov Cap-2 Maneuver - 719 - Stage 1 - - 921 - Stage 2 - - - - 854 - Approach EB WB NB HCM Control Delay. s 0 0 93 HCM LOS A Minor Lane/Maior Mvmt NBLn1 EBT WBT Capacity (veh/h) 922 - HCM Lane V/C Ratio 0.085 - HCM Control Delay {s) 9.3 - HCM Lane LOS A - - HCM 95th °lathe Q(veh) 0.3 - - Federal Way School District - Lake Grove Elementary School 5:00 pm 06/19/2018 2018 Existing AM Peak LOS Synchro 10 Report TENW Page 5 HCM 2010 TWSC 6: 1 st Ave S & SW 308th St/S 308th St 10123/2018 Intersection Int Delay, s/veh 3.1 Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations *T+ T 4,- Traffic Vol, veh/h 10 5 66 25 3 3 62 213 19 4 220 11 Future Vol, veh/h 10 5 66 25 3 3 62 213 19 4 220 11 Conflicting Peds, #/hr 0 0 2 2 0 0 2 0 2 0 0 0 Sign Control Stop Stop Stop Stop Stop Stop Free Free Free Free Free Free RT Channelized - - None - None - - None - None Storage Length - - 0 - - - - Veh in Median Storage, # - 0 - 0 - - 0 - 0 - Grade, % - -6 3 - - 0 - 0 - Peak Hour Factor 93 93 93 93 93 93 93 93 93 93 93 93 Heavy Vehicles, % 11 11 11 3 3 3 3 3 3 3 3 3 Mvmt Flow 11 5 71 27 3 3 67 229 20 4 237 12 Major/Minor Minor2 Minorl Major1 Maior2 Conflicting Flow All 629 638 247 666 634 241 251 0 0 251 0 0 Stage 253 253 375 375 - - - - - - Stage 2 376 385 291 259 - - Critical Hdwy 6.01 5.41 5.71 7.73 7.13 6.53 4.13 - 4.13 Critical Hdwy Stg 1 5.01 4.41 - 6.73 6.13 - - - Critical Hdwy Stg 2 5.01 4.41 - 6.73 6.13 - - Follow-up Hdwy 3.599 4.099 3.399 3.527 4.027 3.327 2.227 - 2.227 Pot Cap-1 Maneuver 472 474 803 333 356 780 1309 1309 Stage 796 741 - 605 578 - - - Stage 2 711 677 - 681 662 - - Platoon blocked, % Mov Cap-1 Maneuver 446 446 800 287 335 779 1307 1307 Mov Cap-2 Maneuver 446 446 - 287 335 - - - Stage l 754 737 - 573 547 - - Stage 2 668 641 - 613 658 - - Approach EB WB NB SIB HCM Control Delay, s 10.9 18 1.7 0.1 HCM LOS B C Minor Lane/Major Mvmt NBL NBT NBR EBLnlWBLnl SBL SBT SBR Capacity (veh/h) 1307 697 310 1307 HCM Lane V/C Ratio 0.051 0.125 0.108 0.003 - HCM Control Delay (s) 7.9 10.9 18 7.8 0 HCM Lane LOS A B C A A HCM 95th %tile Q(veh) 0.2 0.4 0.4 0 - Federal Way School District - Lake Grove Elementary School 5:00 pm 06/19/2018 2018 Existing AM Peak LOS Synchro 10 Report TENW Page 6 HCM 2010 AWSC 1: 8th Ave SW & SW 308th St 10/23/2018 Intersection Intersection Delay, s/veh 7.3 Intersection LOS A Movement EBL EBT EBR VVBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations 41� *11 Traffic Vol, veh/h 3 13 8 8 12 4 7 30 4 5 32 6 Future Vol, veh/h 3 13 8 8 12 4 7 30 4 5 32 6 Peak Hour Factor 0.83 0.83 0.83 0.83 0.83 0.83 0.83 0.83 083 0.83 0.83 0.83 Heavy Vehicles, % 0 0 0 0 0 0 0 0 0 0 0 0 Mvmt Flow 4 16 10 10 14 5 8 36 5 6 39 7 Number of Lanes 0 1 0 0 1 0 0 1 0 0 1 0 Approach EB WB NB SB Opposing Approach WB EB SB NB Opposing Lanes 1 1 1 1 Conflicting Approach Left SB NB EB WB Conflicting Lanes Left 1 1 1 1 Conflicting Approach Right NB SB WB EB Conflicting Lanes Right 1 1 1 1 HCM Control Delay 7.1 7.3 7.3 7.3 HCM LOS A A A A Lane NBLn1 EBLn1 WBLn1 SBLn1 Vol Left, % 17% 12% 33% 12% Vol Thru, % 73% 54% 50% 74% Vol Right, % 10% 33% 17% 14% Sign Control Stop Stop Stop Stop Traffic Vol by Lane 41 24 24 43 LT Vol 7 3 8 5 Through Vol 30 13 12 32 RT Vol 4 8 4 6 Lane Flow Rate 49 29 29 52 Geometry Grp 1 1 1 1 Degree of Util (X) 0.055 0.032 0.033 0.057 Departure Headway (Hd) 4.016 3.922 4.064 3.979 Convergence, Y/N Yes Yes Yes Yes Cap 890 907 876 898 Service Time 2.051 1.971 2.112 2.013 HCM Lane V/C Ratio 0.055 0.032 0.033 0.058 HCM Control Delay 7.3 7.1 7.3 7.3 HCM Lane LOS A A A A HCM 95th-tile Q 0.2 0.1 0.1 0.2 Federal Way School District - Lake Grove Elementary School 5:00 pm 06/19/2018 2018 Existing PM Peak LOS Synchro 10 Report TENW Page 2 HCM 2010 TWSC 2: West Drivewa /4th Ave SW & SW 308th St 10/23/2018 Intersection Int Delay, s/veh 4.7 Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations 41� 41� *T+ +T+ Traffic Vol, vehlh 4 48 14 2 50 4 21 5 13 13 3 7 Future Vol, veh/h 4 48 14 2 50 4 21 5 13 13 3 7 Conflicting Peds, #/hr 28 0 82 145 0 91 82 0 145 91 0 28 Sign Control Free Free Free Free Free Free Stop Stop Stop Stop Stop Stop RT Channelized - None - None None None Storage Length Veh in Median Storage, # - 0 0 0 0 Grade, % - 0 0 - 0 0 Peak Hour Factor 81 81 81 81 81 81 81 81 81 81 81 81 Heavy Vehicles, % 9 9 9 4 4 4 0 0 0 4 4 4 Mvmt Flow 5 59 17 2 62 5 26 6 16 16 4 9 Major/Minor Ma or1 Ma"or2 Minorl Minor2 Conflicting Flow All 158 0 0 221 0 0 380 385 358 394 391 238 Stage 1 - - - - 223 223 160 160 - Stage 2 - - 157 162 234 231 - Critical Hdwy 4.19 4.14 7.1 6.5 6.2 7.14 6.54 6.24 Critical Hdwy Stg 1 - - 6.1 5.5 - 6.14 5.54 - Critical Hdwy Stg 2 - - 6.1 5.5 - 6.14 5.54 Follow-up Hdwy 2.281 - 2.236 3.5 4 3.3 3.536 4.036 3.336 Pot Cap-1 Maneuver 1380 1336 581 552 691 562 541 796 Stage 1 - 784 723 - 837 762 - Stage 2 - 850 768 - 765 710 - Platoon blocked, % Mov Cap-1 Maneuver 1275 - 1175 465 445 534 436 437 685 Mov Cap-2 Maneuver - - 465 445 - 436 437 - Stage 1 687 633 - 770 703 Stage 2 776 708 - 643 621 - Approach EB WB NB SIB HCM Control Delay, s 0.5 0.3 13-3 12.8 HCM LOS B B Minor Lane/Major Mvmt NBLn1 EBL EBT EBR WBL WBT WBR SBLn1 Capacity (veh/h) 483 1275 - 1175 - 490 HCM Lane V/C Ratio 0.1 0.004 - 0.002 - - 0.058 HCM Control Delay (s) 13.3 7.8 0 8.1 0 12.8 HCM Lane LOS B A A A A - B HCM 95th %tile Q(veh) 0.3 0 - 0 - 0.2 Federal Way School District - Lake Grove Elementary School 5:00 pm 06/19/2018 2018 Existing PM Peak LOS Synchro 10 Report TENW Page 4 HCM 2010 TWSC 3: West Driveway - 2 & SW 308th St 10/23/2018 Intersection Int Delay, s/veh 1.2 Movement EBT EBR WBL WBT NBL NBR Lane Configurations 1� 4 Y Traffic Vol, veh/h 65 7 11 53 3 4 Future Vol, vehlh 65 7 11 53 3 4 Conflicting Peds, #/hr 0 96 27 0 96 27 Sign Control Free Free Free Free Stop Stop RT Channefized - None - None - None Storage Length - - - - 0 - Veh in Median Storage, # 0 - - 0 0 - Grade, o% 0 - - 0 0 - Peak Hour Factor 76 76 76 76 76 76 Heavy Vehicles, °% 10 10 6 6 0 0 Mvmt Flow 86 9 14 70 4 5 Ma odMinor Ma'or1 Ma or2 Minor1 _ Conflicting Flow All 0 0 191 0 381 214 Staged - - - 187 - Stage 2 - - 194 - Cdtical Hdwy - - 4.16 6.4 6.2 Critical Hdwy Stg 1 - - 5.4 - Critical Hdwy Stg 2 - - - 5.4 - Follow-up Hdwy - 2,254 3.5 3.3 Pot Cap-1 Maneuver - - 1359 625 831 Stage 1 - - 850 - Stage 2 - 844 - Platoon blocked, % - - Mov Cap-1 Maneuver - 1250 523 747 Mov Cap-2 Maneuver - - 523 - Stage 1 - - 773 Stage 2 - - 776 Approach EB WB NO HCM Control Delay, s 0 1.4 10.8 HCM LOS B Minor LanelMaior Mvmt NBLn1 EBT EBR WBL WBT Capacity (veh/h) 631 - - 1250 - HCM Lane V/C Ratio 0.015 - - 0.012 - HCM Control Delay (s) 10.8 - - 7.9 0 HCM Lane LOS B - A A HCM 95th oloble 0(veh) 0 - 0 - Federal Way School District - Lake Grove Elementary School 5:00 pm 06/19/2018 2018 Existing PM Peak LOS Synchro 10 Report TENW Page 6 HCM 2010 TWSC 4: Center Drivewa /3rd Ave SW & SW 308th St 10/23/2018 Intersection Int Delay, s/veh Movement 3.6 EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations +T+ 4 Traffic Vol, veh/h 9 52 17 25 47 11 9 0 14 6 3 4 Future Vol, veh/h 9 52 17 25 47 11 9 0 14 6 3 4 Conflicting Peds, #/hr 74 0 117 47 0 4 117 0 47 4 0 74 Sign Control Free Free Free Free Free Free Stop Stop Stop Stop Stop Stop RT Channelized - None None None - None Storage Length - - Veh in Median Storage, # - 0 0 - 0 0 Grade, % - 0 - -3 - 0 0 - Peak Hour Factor 81 81 81 81 81 81 81 81 81 81 81 81 Heavy Vehicles, % 4 4 4 4 4 4 22 22 22 0 0 0 Mvmt Flow 11 64 21 31 58 14 11 0 17 7 4 5 Major/Minor Ma'orl Ma or2 Minorl Minor2 Conflicting Flow All 146 0 0 202 0 0 463 422 239 353 425 256 Stage 1 - - - - - 214 214 201 201 - Stage 2 - - - 249 208 152 224 - Critical Hdwy 4.14 4.14 - 7.32 6.72 6.42 7.1 6.5 6.2 Critical Hdwy Stg 1 - - - 6.32 5.72 - 6.1 5.5 - Critical Hdwy Stg 2 - - 6.32 5.72 6.1 5.5 - Follow-up Hdwy 2.236 - 2.236 - 3.698 4.198 3.498 3.5 4 3.3 Pot Cap-1 Maneuver 1424 1358 - 477 494 753 606 524 788 Stage - - - 745 690 - 805 739 - Stage 2 - - 713 694 - 855 722 - Platoon blocked, % Mov Cap-1 Maneuver 1336 - 1226 373 404 653 518 429 667 Mov Cap-2 Maneuver - - 373 404 - 518 429 - Stage 1 - 666 618 749 675 - Stage 2 - 619 634 - 793 646 - Approach EB WB NB SB HCM Control Delay, s 0.9 24 12.6 12 HCM LOS B B Minor Lane/Maior Mvmt NBLn1 EBL EBT EBR WBL WBT WBR SBLn1 Capacity (veh/h) 505 1336 1226 529 HCM Lane V/C Ratio 0.056 0.008 - 0.025 - 0.03 HCM Control Delay (s) 12.6 7.7 0 8 0 12 HCM Lane LOS B A A A A B HCM 95th %tile Q(veh) 0.2 0 - 0.1 - 0.1 Federal Way School District - Lake Grove Elementary School 5:00 pm 06/19/2018 2018 Existing PM Peak LOS Synchro 10 Report TENW Page 8 HCM 2010 TWSC 5: East Driveway & SW 308th St 10/2312018 Intersection Int Delay, s/veh 2.7 Movement EBT EBR W8L WBT NBL NBR Lane Configurations + t Y Traffic Val, veh/h 82 0 0 73 12 46 Future Vol, veh/h 82 0 0 73 12 46 Conflicting Peds, 0hr 0 19 47 0 19 47 Sign Control Free Free Free Free Stop Stop RT Channelized - None - None - None Storage Length - - - - 0 - Veh in Median.Storage, # 0 - - 0 0 - Grade, % 6 - - -10 6 - Peak Hour Factor 74 74 74 74 74 74 Heavy Vehicles, % 5 5 4 4 3 3 Mvmt Flow 111 0 0 99 16 62 Major/Minor Ma'orl Ma'or2 Knori Conflicting Flow All 0 - 229 158 Stage 1 - 111 - Stage 2 - 118 - Critical Hdwy - 7.63 6.83 Critical Hdwy Stg 1 - 6.63 - Critical Hdwy St Hdwy 2 - 6.63 Follow-up Hdwy - 3.527 3.327 Pot Cap-1 Maneuver 0 0 701 862 Stage 1 0 0 878 - Stage Z 0 0 870 - Platoon blocked, % Mov Cap-1 Maneuver - - 690 828 Mov Cap-2 Maneuver - - 690 - Stage 1 - 878 - Stage 2 - - 856 - Approach EB WB N9 HCM Control Delay, s 0 0 10 HCM LOS B Minor Lane/Maior Mvmt NBLn1 EBT WBT Capacity (veh/h) 795 HCM Lane V/C Ratio 0.099 - - HCM Control Delay (s) 10 - HCM Lane LOS B - - HCM 95th %file [ (veh) 0.3 Federal Way School District - Lake Grove Elementary School 5:00 pm 06/19/2018 2018 Existing PM Peak LOS Synchro 10 Report TENW Page 10 HCM 2010 TWSC 6: 1 st Ave S & SW 308th SYS 308th St 10/23/2018 Intersection Int Delay, s/veh 2.5 Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations +T+ +T+ T Traffic Vol, veh/h 13 2 61 30 4 2 45 299 33 7 370 8 Future Vol, veh/h 13 2 61 30 4 2 45 299 33 7 370 8 Conflicting Peds, #/hr 3 0 3 3 0 0 6 0 3 0 0 3 Sign Control Stop Stop Stop Stop Stop Stop Free Free Free Free Free Free RT Channelized None - None - - None - None Storage Length - - 0 - - - - Veh in Median Storage, # - 0 0 - - 0 - 0 - Grade, % - -6 3 - - 0 - 0 - Peak Hour Factor 97 97 97 97 97 97 97 97 97 97 97 97 Heavy Vehicles, % 0 0 0 0 0 0 0 0 0 1 1 1 Mvmt Flow 13 2 63 31 4 2 46 308 34 7 381 8 Major/Minor Minor2 Minorl Ma art Ma'or2 Conflicting Flow All 828 842 394 855 829 331 395 0 0 345 0 0 Stage 405 405 - 420 420 - - - - - Stage 2 423 437 - 435 409 - - - Critical Hdwy 5.9 5.3 5.6 7.7 7.1 6.5 4.1 4.11 Critical Hdwy Stg 1 4.9 4.3 - 6.7 6.1 - - Critical Hdwy Stg 2 4.9 4.3 - 6.7 6.1 - - Follow-up Hdwy 3.5 4 3.3 3.5 4 3.3 2.2 - 2.209 Pot Cap-1 Maneuver 386 401 704 243 269 696 1175 1220 Stage 1 717 689 - 573 553 - Stage 2 705 674 - 561 560 - Platoon blocked, % Mov Cap-1 Maneuver 364 380 699 211 255 693 1169 - 1217 Mov Cap-2 Maneuver 364 380 - 211 255 - - Stage 1 685 681 - 549 530 Stage 2 668 646 - 504 553 Approach EB WB NB SB HCM Control Delay, s 12 24.2 1 0.1 HCM LOS B C Minor Lane/Ma or Mvmt NBL NBT NBR EBLn1WBLnl SBL SBT SBR Capacity (veh/h) 1169 593 224 1217 - HCM Lane V/C Ratio 0.04 0.132 0.166 0.006 - HCM Control Delay (s) 8.2 12 24.2 8 0 HCM Lane LOS A B C A A HCM 95th %tile Q(veh) 0.1 0.5 0.6 0 - Federal Way School District - Lake Grove Elementary School 5:00 pm 06/19/2018 2018 Existing PM Peak LOS Synchro 10 Report TENW Page 12 HCM 2010 AWSC 1: 8th Ave SW & SW 308th St 10/23/2018 Intersection Intersection Delay, s/veh 7.4 Intersection LOS A Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations 4. 4* + 4. Traffic Vol, veh/h 1 27 1 14 10 10 0 30 25 10 31 2 Future Vol, veh/h 1 27 1 14 10 10 0 30 25 10 31 2 Peak Hour Factor 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 Heavy Vehicles, % 4 4 4 3 3 3 8 8 8 3 3 3 Mvmt Flow 1 36 1 19 13 13 0 40 33 13 41 3 Number of Lanes 0 1 0 0 1 0 0 1 0 0 1 0 Approach EB WB NB SB Opposing Approach WB EB SB NB Opposing Lanes 1 1 1 1 Conflicting Approach Left SB NB EB WB Conflicting Lanes Left 1 1 1 1 Conflicting Approach Right NB SB WB EB Conflicting Lanes Right 1 1 1 1 HCM Control Delay 7.5 7.4 7.4 7.5 HCM LOS A A A A Lane NBLn1 E3Ln1 WBLnl SBLnl Vol Left, % 0% 3% 41 % 23% Vol Thru, % 55% 93% 29% 72% Vol Right, % 45% 3% 29% 5% Sign Control Stop Stop Stop Stop Traffic Vol by Lane 55 29 34 43 LT Vol 0 1 14 10 Through Vol 30 27 10 31 RT Vol 25 1 10 2 Lane Flow Rate 73 39 45 57 Geometry Grp 1 1 1 1 Degree of Util (X) 0.08 0.045 0.052 0.066 Departure Headway (Hd) 3.951 4.215 4.112 4.17 Convergence, Y/N Yes Yes Yes Yes Cap 899 841 862 853 Service Time 2.009 2.284 2.18 2.228 HCM Lane V/C Ratio 0.081 0,046 0,052 0,067 HCM Control Delay 7.4 7.5 7.4 7.5 HCM Lane LOS A A A A HCM 95th-tile Q 0.3 0.1 0.2 0.2 Federal Way School District - Lake Grove Elementary School 5:00 pm 06/19/2018 2020 Baseline AM Peak LOS Synchro 10 Report TENW Page 1 HCM 2010 TWSC 2: West Drivewa Ath Ave SW & SW 308th St 10/23/2018 Intersection Int Delay, s/veh 2.5 Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations +1� Traffic Vol, veh/h 0 54 19 7 21 1 13 0 8 5 0 1 Future Vol, veh/h 0 54 19 7 21 1 13 0 8 5 0 1 Conflicting Peds, #/hr 2 0 17 22 0 7 17 0 22 7 0 2 Sign Control Free Free Free Free Free Free Stop Stop Stop Stop Stop Stop RT Channelized - - None None None - None Storage Length - - Veh in Median Storage, # - 0 0 0 0 Grade, % - 0 - 0 - 0 0 - Peak Hour Factor 55 55 55 55 55 55 55 55 55 55 55 55 Heavy Vehicles, % 7 7 7 0 0 0 0 0 0 17 17 17 Mvmt Flow 0 98 35 13 38 2 24 0 15 9 0 2 Major/Minor Ma'or1 Ma-or2 Minorl Minor2 Conflicting Flow All 47 0 0 155 0 0 221 211 160 217 227 63 Stage - - - - - 138 138 - 72 72 - Stage 2 - - - 83 73 - 145 155 Critical Hdwy 4.17 4.1 - 7.1 6.5 6.2 7.27 6.67 6.37 Critical Hdwy Stg 1 - - - 6.1 5.5 - 6.27 5.67 - Critical Hdwy Stg 2 - - - 6.1 5.5 - 6.27 5.67 - Follow-up Hdwy 2.263 2.2 - 3.5 4 3.3 3.653 4.153 3.453 Pot Cap-1 Maneuver 1529 1438 - 739 690 890 708 647 961 Stage - - 870 786 901 806 - Stage 2 - - - 930 838 823 742 - Platoon blocked, % Mov Cap-1 Maneuver 1520 1412 709 667 858 675 626 942 Mov Cap-2 Maneuver - - 709 667 - 675 626 - Stage 1 - 854 772 - 896 794 - Stage 2 - 907 825 - 794 729 - Approach EB WB NB SIB HCM Control Delay, s 0 1.8 10 10.2 HCM LOS B B Minor Lane/Maior Mvmt NBLn1 EBL EBT EBR WBL WBT WBR SBLn1 Capacity (veh/h) 759 1520 1412 708 HCM Lane V/C Ratio 0.05 - 0.009 0.015 HCM Control Delay (s) 10 0 7.6 0 10.2 HCM Lane LOS B A A A B HCM 95th %tile Q(veh) 0.2 0 0 - 0 Federal Way School District - Lake Grove Elementary School 5:00 pm 06/19/2018 2020 Baseline AM Peak LOS Synchro 10 Report TENW Page 2 HCM 2010 TWSC 5: East Driveway & SW 308th St 10/23/2018 Intersection Int Delay, s/veh Movement 2.5 EBT EBR WBL WBT NBL NBR Lane Configurations + + Y Traffic Vol, veh/h 45 0 0 72 4 38 Future Vol, veh/h 45 0 0 72 4 38 Conflicting Peds, #/hr 0 2 8 0 2 8 Sign Control Free Free Free Free Stop Stop RT Channellzed None - None - None Storage Length - - - - 0 Veh in Median Storage, # 0 - - 0 0 Grade, % 6 - - -10 6 - Peak Hour Factor 50 50 50 50 50 50 Heavy Vehicles, % 21 21 4 4 0 0 Mvmt Flow 90 0 0 144 8 76 Major/Minor Maori Ma or2 Minorl Conflicting Flow All 0 - - 236 98 Stage 1 - - - 90 - Stage 2 - - 146 - Critical Hdwy - - 7.6 6.8 Critical Hdwy Stg 1 - - 6.6 Critical Hdwy Stg 2 - - 6.6 - Follow-up Hdwy - - 3.5 3.3 Pot Cap-1 Maneuver 0 0 - 699 948 Stage 1 0 0 911 Stage 2 0 0 - 844 - Platoon blocked, % Mov Cap-1 Maneuver - 698 942 Mov Cap-2 Maneuver - 698 - Stage 1 - - 911 Stage 2 - 842 - Approach EB WB NB HCM Control Delay. s 0 0 9.3 HCM LOS A Minor Lane/Maior Mvmt NBLn1 EBT WBT Capacity (veh/h) 912 - HCM Lane V/C Ratio 0.092 - - HCM Control Delay (s) 9.3 - HCM Lane LOS A HCM 95th %tile Q(veh) 0.3 - Federal Way School District - Lake Grove Elementary School 5:00 pm 06/19/2018 2020 Baseline AM Peak LOS Synchro 10 Report TENW Page 3 HCM 2010 TWSC 6: 1 st Ave S & SW 308th St/S 308th St 10/23/2018 Intersection Int Delay, s/veh 3.2 Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations c, +T+ 1� 41 Traffic Vol, veh/h 11 5 70 27 3 3 66 226 20 4 233 12 Future Vol, veh/h 11 5 70 27 3 3 66 226 20 4 233 12 Conflicting Peds, #/hr 0 0 2 2 0 0 2 0 2 0 0 0 Sign Control Stop Stop Stop Stop Stop Stop Free Free Free Free Free Free RT Channelized - None - None - None - None Storage Length - 0 - Veh in Median Storage, # 0 0 - 0 0 Grade, % - -6 - 3 - - 0 - 0 Peak Hour Factor 93 93 93 93 93 93 93 93 93 93 93 93 Heavy Vehicles, % 11 11 11 3 3 3 3 3 3 3 3 3 Mvmt Flow 12 5 75 29 3 3 71 243 22 4 251 13 Major/Minor Minor2 Minorl Ma'orl Ma'or2 Conflicting Flow All 667 677 262 706 672 256 266 0 0 267 0 0 Stage 268 268 - 398 398 - - - - Stage 2 399 409 - 308 274 - - Critical Hdwy 6.01 5.41 5.71 7.73 7.13 6.53 4.13 4.13 Critical Hdwy Stg 1 5.01 4.41 6.73 6.13 - Critical Hdwy Stg 2 5.01 4.41 6.73 6.13 - - - Follow-up Hdwy 3.599 4.099 3.399 3.527 4.027 3.327 2.227 - 2.227 Pot Cap-1 Maneuver 450 455 789 311 336 764 1292 - 1291 Stage 785 734 586 562 - - Stage 2 696 666 665 651 - - Platoon blocked, % Mov Cap-1 Maneuver 424 426 786 265 315 763 1290 1289 Mov Cap-2 Maneuver 424 426 - 265 315 - - - Stage 1 740 730 - 553 530 - - Stage 2 651 628 - 594 647 - - Approach EB WB NB S8 HCM Control Delay, s 11.1 19.4 1.7 0.1 HCM LOS B C Minor Lane/Ma or Mvmt NBL NBT NBR EBLn1WBLn1 SBL SBT SBR Capacity (veh/h) 1290 679 286 1289 HCM Lane V/C Ratio 0.055 0.136 0.124 0.003 - HCM Control Delay (s) 8 11.1 19.4 7.8 0 HCM Lane LOS A B C A A HCM 95th %tile Q(veh) 0.2 0.5 0.4 0 - Federal Way School District - Lake Grove Elementary School 5:00 pm 06/19/2018 2020 Baseline AM Peak LOS Synchro 10 Report TENW Page 4 HCM 2010 AWSC 1: 8th Ave SW & SW 308th St 10/23/2018 Intersection Intersection Delay, s/veh 7.3 Intersection LOS A Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations 4r +1� +4 Traffic Vol, vehlh 3 14 8 8 13 4 7 32 4 5 34 6 Future Vol, veh/h 3 14 8 8 13 4 7 32 4 5 34 6 Peak Hour Factor 0.83 0.83 0.83 0.83 0.83 0.83 0.83 0.83 0.83 0.83 0.83 0.83 Heavy Vehicles, % 0 0 0 0 0 0 0 0 0 0 0 0 Mvmt Flow 4 17 10 10 16 5 8 39 5 6 41 7 Number of Lanes 0 1 0 0 1 0 0 1 0 0 1 0 Approach EB WB NB SB Opposing Approach WB EB SB NB Opposing Lanes 1 1 1 1 Conflicting Approach Left SB NB EB WB Conflicting Lanes Left 1 1 1 1 Conflicting Approach Right NB SB WB EB Conflicting Lanes Right 1 1 1 1 HCM Control Delay 7.1 7.3 7.3 7.3 HCM LOS A A A A Lane NBLn1 EBLn1 WBLn1 SBLn1 Vol Left, % 16% 12% 32% 11 % Vol Thru, % 74% 56% 52% 76% Vol Right, % 9% 32% 16% 13% Sign Control Stop Stop Stop Stop Traffic Vol by Lane 43 25 25 45 LT Vol 7 3 8 5 Through Vol 32 14 13 34 RT Vol 4 8 4 6 Lane Flow Rate 52 30 30 54 Geometry Grp 1 1 1 1 Degree of Util (X) 0.058 0,033 0.034 0.06 Departure Headway (Hd) 4.023 3.938 4.074 3.987 Convergence, Y/N Yes Yes Yes Yes Cap 887 902 873 896 Service Time 2.059 1.991 2.126 2.023 HCM Lane V/C Ratio 0.059 0.033 0.034 0.06 HCM Control Delay 7.3 7.1 7.3 7.3 HCM Lane LOS A A A A HCM 95th-tile Q 0.2 0.1 0.1 0.2 Federal Way School District - Lake Grove Elementary School 5:00 pm 10/01/2018 2020 Baseline PM LOS Synchro 10 Report TENW Page 1 HCM 2010 TWSC 2- West Drivewa Ath Ave SW & SW 308th St 10/23/2018 Intersection Int Delay, s/veh 4.7 Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations 4� +1� 4 4 Traffic Vol, veh/h 4 51 15 2 53 4 22 5 14 14 3 7 Future Vol, veh/h 4 51 15 2 53 4 22 5 14 14 3 7 Conflicting Peds, #/hr 28 0 82 145 0 91 82 0 145 91 0 28 Sign Control Free Free Free Free Free Free Stop Stop Stop Stop Stop Stop RT Channelized None None None None Storage Length - - Veh in Median Storage, # 0 0 0 - 0 Grade, % 0 - 0 0 - 0 - Peak Hour Factor 81 81 81 81 81 81 81 81 81 81 81 81 Heavy Vehicles, % 9 9 9 4 4 4 0 0 0 4 4 4 Mvmt Flow 5 63 19 2 65 5 27 6 17 17 4 9 Major/Minor Ma'orl Ma-or2 Minorl Minor2 Conflicting Flow All 161 0 0 227 0 0 388 393 363 402 400 241 Stage - - - - - 228 228 163 163 Stage 2 - - - 160 165 239 237 - Critical Hdwy 4.19 4.14 7.1 6.5 6.2 7.14 6.54 6.24 Critical Hdwy Stg 1 - - - 6.1 5.5 - 6.14 5.54 - Critical Hdwy Stg 2 - - 6.1 5.5 - 6.14 5.54 Follow-up Hdwy 2.281 2.236 3.5 4 3.3 3.536 4.036 3.336 Pot Cap-1 Maneuver 1376 1330 574 546 686 555 535 793 Stage - - - 779 719 - 834 759 - Stage 2 - - 847 766 - 760 705 - Platoon blocked, % Mov Cap-1 Maneuver 1272 1169 459 441 530 430 432 683 Mov Cap-2 Maneuver - - 459 441 - 430 432 - Stage 1 682 629 - 767 700 - Stage 2 773 706 - 637 617 - Approach EB WB NB SB HCM Control Delay, s 0.4 0.3 13.4 13 HCM LOS B B Minor Lane/Major Mvmt NBLn1 EBL EBT EBR WBL WBT WBR SBLn1 Capacity (veh/h) 479 1272 1169 482 HCM Lane V/C Ratio 0.106 0.004 0.002 - 0.061 HCM Control Delay (s) 13.4 7.8 0 8.1 0 13 HCM Lane LOS B A A A A B HCM 95th %tile Q(veh) 0.4 0 - 0 - 0.2 Federal Way School District - Lake Grove Elementary School 5:00 pm 10/01/2018 2020 Baseline PM LOS Synchro 10 Report TENW Page 2 HCM 2010 TWSC 5: East Driveway & SW 308th St 10/23/2018 Intersection Int Delay, s/veh 2.8 Movement EBT EBR WK WBT 'RBE. NBR Lane Configurations t t Y Traffic Vol, veil/h 87 0 0 77 13 49 Future Vol, veh/h 87 0 0 77 13 49 Conflicting Peds, #/hr 0 19 47 0 19 47 Sign Control Free Free Free Free Stop Stop RT Channeliied None None - None Storage Length - - - 0 - Veh in Median Storage, # 0 - 0 0 - Grade, % 6 - -10 6 - Peak Hour Factor 74 74 74 74 74 74 Heavy Vehicles, % 5 5 4 4 3 3 Mvmt Flow 118 0 0 1.04 18 66 Ma'or/Minor Ma orl Ma'or2 Minorl Conflicting Flow All 0 - - - 241 165 Stage A - - - - 118 - Stage 2 - - - 123 - critical Hdwy - - - 7.63 6.83 Critical Hdwy Stg 1 - - - 6.63 - Critical -Hdwy Stg 2 - - - 6.63 - Follow-up Hdwy - - - 3.527 3.327 Pot_ Cap-1 Maneuver 0 0 - 688 853 Stage 1 0 0 - 870 - Stage 2 0 0 - 864 Platoon blocked, % Mov Cap-1 Maneuver - - 677 820 Mov Cap-2 Maneuver - 677 - Stage 1 - - - 870 - Stage 2 - - 850 - Approach EB WB NB HCM Control Delay, s 0 0 10.1 HCM LOS B Minor Lan&Maior Mvmt NBLn1 EBT WBT Capacity (veh/h) 785 - HCM Lane V/C Ratio 0.107 - HCM Control Delay (s) 10.1 - HCM Lane LOS B - HCM 95th %tile Q(veh) 0.4 - Federal Way School District- Lake Grove Elementary School 5:00 pm 10/01/2018 2020 Baseline PM LOS Synchro 10 Report TENW Page 3 HCM 2010 TWSC 6: 1 st Ave S & SW 308th St/S 308th St 10/23/2018 Intersection Int Delay, s/veh Movement 2.7 EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations +T+ cT T+ Traffic Vol, veh/h 14 2 65 32 4 2 48 317 35 7 393 8 Future Vol, veh/h 14 2 65 32 4 2 48 317 35 7 393 8 Conflicting Peds, #/hr 3 0 3 3 0 0 6 0 3 0 0 3 Sign Control Stop Stop Stop Stop Stop Stop Free Free Free Free Free Free RT Channelized - None - None - None - None Storage Length - - - - 0 - - - Veh in Median Storage, # 0 - - 0 - - 0 - 0 - Grade, % -6 - - 3 - - 0 - 0 - Peak Hour Factor 97 97 97 97 97 97 97 97 97 97 97 97 Heavy Vehicles, % 0 0 0 0 0 0 0 0 0 1 1 1 Mvmt Flow 14 2 67 33 4 2 49 327 36 7 405 8 Major/Minor Minor2 Minorl Ma or1 Ma'or2 Conflicting Flow All 878 893 418 907 879 351 419 0 0 366 0 0 Stage 429 429 - 446 446 - - Stage 2 449 464 - 461 433 - - Critical Hdwy 5.9 5.3 5.6 7.7 7.1 6.5 4.1 4.11 Critical Hdwy Stg 1 4.9 4.3 - 6.7 6.1 - - Critical Hdwy Stg 2 4.9 4.3 - 6.7 6.1 - - Follow-up Hdwy 3.5 4 3.3 3.5 4 3.3 2.2 - 2.209 Pot Cap-1 Maneuver 363 381 685 222 249 677 1151 - 1198 Stage 702 678 - 553 536 - - Stage 2 689 662 - 541 544 - - Platoon blocked, % Mov Cap-1 Maneuver 341 359 680 191 235 674 1145 - 1195 Mov Cap-2 Maneuver 341 359 - 191 235 - - - Stage 1 668 669 - 528 512 - Stage 2 651 632 - 481 537 - - Approach EB WB NB SB HCM Control Delay, s 12.4 26.9 1 0.1 HCM LOS B D Minor Lane/Major Mvmt NBL NBT NBR EBLnlWBLnl SBL SBT SBR Capacity (veh/h) 1145 - 570 203 1195 HCM Lane V/C Ratio 0.043 - 0.147 0.193 0.006 - HCM Control Delay (s) 8.3 - 12.4 26.9 8 0 HCM Lane LOS A - B D A A HCM 95th %tile Q(veh) 0.1 - 0.5 0.7 0 - Federal Way School District - Lake Grove Elementary School 5:00 pm 10/01/2018 2020 Baseline PM LOS Synchro 10 Report TENW Page 4 HCM 2010 AWSC 1: 8th Ave SW & SW 308th St 10/23/2018 Intersection Intersection Delay, s/veh 7.6 Intersection LOS A Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations 4.1 + + Traffic Vol, veh/h 1 37 1 18 19 14 0 30 31 15 31 2 Future Vol, veh/h 1 37 1 18 19 14 0 30 31 15 31 2 Peak Hour Factor 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 Heavy Vehicles, % 4 4 4 3 3 3 8 8 8 3 3 3 Mvmt Flow 1 49 1 24 25 19 0 40 41 20 41 3 Number of Lanes 0 1 0 0 1 0 0 1 0 0 1 0 Approach EB WB NB SB Opposing Approach WB EB SB NB Opposing Lanes 1 1 1 1 Conflicting Approach Left SB NB EB WB Conflicting Lanes Left 1 1 1 1 Conflicting Approach Right NB SB WB EB Conflicting Lanes Right 1 1 1 1 HCM Control Delay 7.6 7.6 7.5 7.7 HCM LOS A A A A Lane NBLn1 EBLn1 WBLn1 SBLn1 Vol Left, % 0% 3% 35% 31 % Vol Thru, % 49% 95% 37% 65% Vol Right, % 51% 3% 27% 4% Sign Control Stop Stop Stop Stop Traffic Vol by Lane 61 39 51 48 LT Vol 0 1 18 15 Through Vol 30 37 19 31 RT Vol 31 1 14 2 Lane Flow Rate 81 52 68 64 Geometry Grp 1 1 1 1 Degree of Util (X) 0.09 0.062 0.078 0.076 Departure Headway (Hd) 3.987 4.261 4.148 4.258 Convergence, Y/N Yes Yes Yes Yes Cap 886 828 851 830 Service Time 2.07 2.35 2.234 2.341 HCM Lane VIC Ratio 0.091 0.063 0.08 0.077 HCM Control Delay 7.5 7.6 7.6 7.7 HCM Lane LOS A A A A HCM 95th-tile Q 0.3 0.2 0.3 0.2 Federal Way School District - Lake Grove Elementary School 5:00 pm 06/19/2018 2020 Project AM Peak LOS Synchro 10 Report TENW Page 1 HCM 2010 TWSC 2- West DrivewayAth Ave SW & SW 308th St 10/23/2018 Intersection Int Delay, s/veh 3.4 Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations 4 +T+ +T+ Traffic Vol, veh/h 0 62 56 23 28 1 26 2 14 5 2 1 Future Vol, veh/h 0 62 56 23 28 1 26 2 14 5 2 1 Conflicting Peds, #/hr 2 0 17 22 0 7 17 0 22 7 0 2 Sign Control Free Free Free Free Free Free Stop Stop Stop Stop Stop Stop RT Channelized - - None None None None Storage Length - - Veh in Median Storage, # - 0 0 - 0 0 Grade, % - 0 - - 0 - 0 - 0 Peak Hour Factor 55 55 55 55 55 55 55 55 55 55 55 55 Heavy Vehicles, % 7 7 7 0 0 0 0 0 0 17 17 17 Mvmt Flow 0 113 102 42 51 2 47 4 25 9 4 2 Major/Minor Ma'orl Ma or2 Minorl Minor2 Conflicting Flow All 60 0 0 237 0 0 342 330 208 344 380 76 Stage 1 - - - - 186 186 - 143 143 - Stage 2 - - - 156 144 - 201 237 - Critical Hdwy 4.17 - 4.1 7.1 6.5 6.2 7.27 6.67 6.37 Critical Hdwy Stg 1 - - - 6.1 5.5 - 6.27 5.67 - Critical Hdwy Stg 2 - - 6.1 5.5 - 6.27 5.67 - Follow-up Hdwy 2.263 - 2.2 3.5 4 3.3 3.653 4.153 3.453 Pot Cap-1 Maneuver 1512 - 1342 616 592 837 583 530 945 Stage - - 820 750 - 825 751 - Stage 2 - 851 782 - 768 682 - Platoon blocked, % Mov Cap-1 Maneuver 1503 1317 577 559 807 535 500 926 Mov Cap-2 Maneuver - 577 559 - 535 500 - Stage 1 805 737 820 722 - Stage 2 - 806 752 - 727 670 - Approach EB WB NB SB HCM Control Delay, s 0 3.5 11.4 11.7 HCM LOS B B Minor Lane/Major Mvmt NBLn1 EBL EBT EBR WBL WBT WBR SBLn1 Capacity (veh/h) 636 1503 1317 - 555 HCM Lane V/C Ratio 0.12 - 0.032 - - 0.026 HCM Control Delay (s) 11.4 0 7.8 0 - 11.7 HCM Lane LOS B A A A - B HCM 95th %tile Q(veh) 0.4 0 0.1 - - 0.1 Federal Way School District - Lake Grove Elementary School 5:00 pm 06/19/2018 2020 Project AM Peak LOS Synchro 10 Report TENW Page 2 HCM 2010 TWSC 5- East Driveway & SW 308th St 10/23/2018 Intersection Int Delay, s/veh 5.1 Movement EBT EBR WBL WBT NBL NBR Lane Configurations + f Y Traffic Vol, veh/h 50 28 58 79 18 75 Future Vol, veh/h 50 28 58 79 18 75 Conflicting Peds, #/hr 0 2 8 0 2 8 Sign Control Free Free Free Free Stop Stop RT Channelized - None - None - None Storage Length 0 Veh in Median Storage, # 0 0 0 Grade, % 6 - -10 6 Peak Hour Factor 50 50 50 50 50 50 Heavy Vehicles, % 21 21 4 4 0 0 Mvmt Flow 100 56 116 158 36 150 Major/Minor Ma or1 Ma'or2 Minorl Conflicting Flow All 0 0 164 0 528 144 Stage 1 - - - 136 - Stage 2 - - 392 - Critical Hdwy - 4.14 - 7.6 6.8 Critical Hdwy Stg 1 - - - 6.6 - Critical Hdwy Stg 2 - 6.6 - Follow-up Hdwy - 2.236 3.5 3.3 Pot Cap-1 Maneuver 1402 431 887 Stage 1 - 856 - Stage 2 - 603 - Platoon blocked, % Mov Cap-1 Maneuver - 1393 388 875 Mov Cap-2 Maneuver 388 - Stage 1 773 - Stage 2 602 - Approach EB WB NB HCM Control Delay, s 0 3.3 11.9 HCM LOS B Minor Lane/Maior Mvmt NBLn1 EBT EBR WBL WBT Capacity (veh/h) 704 - 1393 HCM Lane V/C Ratio 0.264 - 0.083 HCM Control Delay (s) 11.9 - 7.8 HCM Lane LOS B - A HCM 95th %tile Q(veh) 1.1 - 0.3 Federal Way School District - Lake Grove Elementary School 5:00 pm 06/19/2018 2020 Project AM Peak LOS Synchro 10 Report TENW Page 3 HCM 2010 TWSC 6: 1 st Ave S & SW 308th SYS 308th St 10/23/2018 Intersection Int Delay, s/veh 3.7 Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations r 41� 1� Traffic Vol, vehlh 16 7 86 27 5 3 84 226 20 4 233 18 Future Vol, veh/h 16 7 86 27 5 3 84 226 20 4 233 18 Conflicting Peds, #/hr 0 0 2 2 0 0 2 0 2 0 0 0 Sign Control Stop Stop Stop Stop Stop Stop Free Free Free Free Free Free RT Channelized - None - None - None None Storage Length - 0 - - Veh in Median Storage, # - 0 0 0 0 Grade, % - -6 - - 3 0 0 Peak Hour Factor 93 93 93 93 93 93 93 93 93 93 93 93 Heavy Vehicles, % 11 11 11 3 3 3 3 3 3 3 3 3 Mvmt Flow 17 8 92 29 5 3 90 243 22 4 251 19 Major/Minor Minor2 Minorl Ma or1 Mpjor2 Conflicting Flow All 709 718 265 757 716 256 272 0 0 267 0 0 Stage 271 271 - 436 436 - - - - - Stage 2 438 447 - 321 280 - - - Critical Hdwy 6.01 5.41 5.71 7.73 7.13 6.53 4.13 4.13 Critical Hdwy Stg 1 5.01 4.41 6.73 6.13 Critical Hdwy Stg 2 5.01 4.41 6.73 6.13 - - - Follow-up Hdwy 3.599 4.099 3.399 3.527 4.027 3.327 2.227 2.227 Pot Cap-1 Maneuver 427 437 786 285 315 764 1286 1291 Stage 783 732 555 538 - - Stage 2 671 648 653 646 - Platoon blocked, % Mov Cap-1 Maneuver 395 403 783 233 291 763 1284 1289 Mov Cap-2 Maneuver 395 403 - 233 291 - - - Stage 1 727 728 515 499 Stage 2 615 601 567 642 - Approach EB WB NB SIB HCM Control Delay, s 11.8 21.5 2 0.1 HCM LOS B C Minor Lane/Major Mvmt NBL NBT NBR EBLn1WBLnl SBL SBT SBR Capacity (veh/h) 1284 650 255 1289 HCM Lane WC Ratio 0.07 0.18 0.148 0.003 - HCM Control Delay (s) 8 11.8 21.5 7.8 0 HCM Lane LOS A B C A A HCM 95th °/stile Q(veh) 0.2 0.7 0.5 0 - Federal Way School District - Lake Grove Elementary School 5:00 pm 06/19/2018 2020 Project AM Peak LOS Synchro 10 Report TENW Page 4 HCM 2010 AWSC 1: 8th Ave SW & SW 308th St 10/2312018 Intersection fntersec#ion Delay, s/veh 7.3 Intersection LOS A Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT S.BR Lane Configurations *T+ 41 44 Traffic Vol, veh/h 3 16 8 10 16 6 7 32 5 7 34 6 Future Val, veh/h 3 16 8 10 16 6 7 32 5 7 34 6 Peak Hour Factor 0.83 0.83 0.83 0.83 0.83 0.83 0.83 0.83 0.83 0.83 0.83 0.83 Heavy Vehicles, % 0 0 0 0 0 0 0 0 0 0 0 0 Mvmt Flow 4 19 10 12 19 7 8 39 6 8 41 7 }Number of Lanes 0 1 0 0 1 0 0 1 0 0 1 0 Approach EB WB NS S9 Opposing Approach WB EB SB NB Opposing Lanes 1 1 1 1 Conflicting Approach Left SB NB EB WB Conflicting Lanes Left 1 1 1 1 Conflicting Approach Right NB SB WB EB Conflicting Lanes Right 1 1 1 1 HCM Control Delay 7.2 7.3 7.3 7.3 HCM LOS A A A A Lane NBLn1 E6Ln1 WBLn1 SBLni Vol Left, % 16% 11% 31% 15% Vol Thru, % 73% 59% 50% 72% Vol Right, % 11 % 30% 19% 13% Sign Control Stop Stop Stop Stop Traffic Vol by Lane 44 27 32 47 LT Vol 7 3 10 7 Through Vol 32 16 16 34 RT Vol 5 B 6 6 Lane Flow Rate 53 33 39 57 Geometry Grp 1 1 1 1 Degree of Util (X) 0.059 0.036 0.044 0.063 Departure Headway (Hd) 4.029 3.962 4.064 4.016 Convergence, Y/N Yes Yes Yes Yes Cap 884 896 875 887 Service Time 2.074 2.02 2.118 2.06 HCM Lane WC Ratio 0.06 0,037 0.045 0.064 HCM Control Delay 7.3 7.2 7.3 73 HCM Lane LOS A A A A HCM 95th4ile Q 0.2 01 0.1 0.2 Federal Way School District - Lake Grove Elementary School 5:00 pm 10/01/2018 2020 Project PM LOS Synchro 10 Report TENW Page 1 HCM 2010 TWSC 2- West Drivewa /4th Ave SW & SW 308th St 10/23/2018 Intersection Int Delay, s/veh 5.8 Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations 41� 44 44 *T+ Traffic Vol, veh/h 4 54 29 17 57 4 34 6 22 14 7 7 Future Vol, veh/h 4 54 29 17 57 4 34 6 22 14 7 7 Conflicting Peds, #/hr 28 0 82 145 0 91 82 0 145 91 0 28 Sign Control Free Free Free Free Free Free Stop Stop Stop Stop Stop Stop RT Channelized None None - None None Storage Length - - - - - Veh in Median Storage, # - 0 0 - 0 0 Grade, % - 0 - 0 - - 0 - 0 - Peak Hour Factor 81 81 81 81 81 81 81 81 81 81 81 81 Heavy Vehicles, % 9 9 9 4 4 4 0 0 0 4 4 4 Mvmt Flow 5 67 36 21 70 5 42 7 27 17 9 9 Major/Minor Ma'orl Ma'or2 Minorl Minor2 Conflicting Flow All 166 0 0 248 0 0 446 448 375 463 464 246 Stage 1 - - - - - 240 240 - 206 206 - Stage 2 - - 206 208 - 257 258 - Critical Hdwy 4.19 - 4.14 7.1 6.5 6.2 7.14 6.54 6.24 Critical Hdwy Stg 1 - - - - 6.1 5.5 6.14 5.54 Critical Hdwy Stg 2 - - - 6.1 5.5 6.14 5.54 - Follow-up Hdwy 2.281 - 2.236 3.5 4 3.3 3.536 4.036 3.336 Pot Cap-1 Maneuver 1371 1306 526 509 676 506 492 788 Stage - - - 768 711 791 728 - Stage 2 - - - 801 734 743 691 - Platoon blocked, % Mov Cap-1 Maneuver 1267 1148 411 404 523 377 391 678 Mov Cap-2 Maneuver - 411 404 - 377 391 - Stage 1 - 673 622 - 728 660 Stage 2 - 713 665 - 609 605 Approach EB WB NB SS HCM Control Delay, s 0.4 1.8 14.8 14.1 HCM LOS B B Minor Lane/Maior Mvmt NBLn1 EBL EBT EBR WBL WBT WBR SBLn1 Capacity (veh/h) 444 1267 1148 428 HCM Lane V/C Ratio 0.172 0.004 0.018 0.081 HCM Control Delay (s) 14.8 7.9 0 8.2 0 14.1 HCM Lane LOS B A A A A B HCM 95th %tile Q(veh) 0.6 0 - 0.1 - 0.3 Federal Way School District - Lake Grove Elementary School 5:00 pm 10/01/2018 2020 Project PM LOS Synchro 10 Report TENW Page 2 HCM 2010 TWSC 5: East Driveway & SW 308th St 10/23/2018 Intersection Int Delay, s/veh 4.6 Movement EBT EBR WBL WBT NBL NBR Lane Configurations + + Y Traffic Vol, veh/h 91 21 36 80 26 75 Future Vol, veh/h 91 21 36 80 26 75 Conflicting Peds, Whr 0 19 47 0 19 47 Sign Control Free Free Free Free Stop Stop RT Channelized None None - None Storage Length 0 Veh in Median Storage, # 0 - 0 0 Grade, % 6 - -10 6 Peak Hour Factor 74 74 74 74 74 74 Heavy Vehicles, % 5 5 4 4 3 3 Mvmt Flow 123 28 49 108 35 101 Major/Minor Ma'orl Ma'or2 Minorl Conflicting Flow All 0 0 198 0 409 231 Stage 1 - - 184 - Stage 2 - - - 225 - Critical Hdwy - 4.14 - 7.63 6.83 Critical Hdwy Stg 1 - - - 6.63 - Critical Hdwy Stg 2 - - 6.63 Follow-up Hdwy - 2.236 - 3.527 3.327 Pot Cap-1 Maneuver - 1363 - 521 775 Stage 1 - - 795 - Stage 2 - - 751 - Platoon blocked, % Mov Cap-1 Maneuver - 1310 473 715 Mov Cap-2 Maneuver - 473 - Stage 1 734 - Stage 2 739 - Approach EB WB NB HCM Control Delay, s 0 2.4 12.3 HCM LOS B Minor Lane/Major Mvmt NBLn1 EBT EBR WBL WBT Capacity (veh/h) 632 1310 HCM Lane V/C Ratio 0.216 0.037 HCM Control Delay (s) 12.3 7.9 HCM Lane LOS B A HCM 95th %tile Q(veh) 0.8 0.1 Federal Way School District - Lake Grove Elementary School 5:00 pm 10/01/2018 2020 Project PM LOS Synchro 10 Report TENW Page 3 HCM 2010 TWSC 6- 1 st Ave S & SW 308th St/S 308th St 10/23/2018 Intersection Int Delay, s/veh 2.9 Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations *T+ *14 T *1� Traffic Vol, veh/h 15 3 70 32 5 2 52 317 35 7 393 10 Future Vol, veh/h 15 3 70 32 5 2 52 317 35 7 393 10 Conflicting Peds, #/hr 3 0 3 3 0 0 6 0 3 0 0 3 Sign Control Stop Stop Stop Stop Stop Stop Free Free Free Free Free Free RT Channelized - None - None - - None None Storage Length - - - - 0 - - Veh in Median Storage, # 0 0 - - 0 - 0 Grade, % -6 - 3 - - 0 - 0 Peak Hour Factor 97 97 97 97 97 97 97 97 97 97 97 97 Heavy Vehicles, % 0 0 0 0 0 0 0 0 0 1 1 1 Mvmt Flow 15 3 72 33 5 2 54 327 36 7 405 10 M@jor/Minor Minor2 Minorl Ma orl Ma'or2 Conflicting Flow All 890 904 419 921 891 351 421 0 0 366 0 0 Stage 1 430 430 - 456 456 - Stage 2 460 474 - 465 435 - Critical Hdwy 5.9 5.3 5.6 7.7 7.1 6.5 4.1 4.11 Critical Hdwy Stg 1 4.9 4.3 - 6.7 6.1 - Critical Hdwy Stg 2 4.9 4.3 - 6.7 6.1 - Follow-up Hdwy 3.5 4 3.3 3.5 4 3.3 2.2 - 2.209 Pot Cap-1 Maneuver 357 377 685 217 245 677 1149 - 1198 Stage 701 677 - 545 530 - - Stage 2 682 657 - 538 543 - Platoon blocked, % Mov Cap-1 Maneuver 333 354 680 184 230 674 1143 - 1195 Mov Cap-2 Maneuver 333 354 - 184 230 - - - Stage 1 665 668 - 518 504 Stage 2 640 625 - 474 536 - Approach EB WB NB SIB HCM Control Delay, s 12.6 28 1.1 0.1 HCM LOS B D Minor Lane/Major Mvmt NBL NBT NBR EBLn1WBLn1 SBL SBT SBR Capacity (veh/h) 1143 562 196 1195 HCM Lane V/C Ratio 0.047 0.161 0.205 0.006 - HCM Control Delay (s) 8.3 12.6 28 8 0 HCM Lane LOS A - B D A A HCM 95th %tile Q(veh) 0.1 0.6 0.7 0 - Federal Way School District - Lake Grove Elementary School 5:00 pm 10/01/2018 2020 Project PM LOS Synchro 10 Report TENW Page 4 ATTACHMENT C Future Traffic Volume Estimates V TENW 2020 AM Peak Hour Turning Movement Volumes Federal Way School District Lake Grove Elementary School - 303 SW 308th St, Federal Way, WA 9802E Growth Rate 10 % Fxistin Year 2018 BaselineYeel 2020 AM Peak Generabr Enter Exit 53 45 2018 Existing 2020 Baseline Redistributed Trips Trip Distribution Project Trips 2020 With Project 1 —AM 11Y 9Al111sN/I Rv151r llY xae OillNAr Yw Ar.m --hsIR9l Ave SW 6W ]gpn qql. Av. uY sW 31mN 519MAve SW 11 1 n B 31 150 9 23 58 2] 1] 12 1 n IG 33 2f 159 19 29 1 14 62 L 0 0 0 0 R 20% 1t1% 40% 20R a0% ]dl 20% ,px d0% x 0 7 18 11 39 g. 11 ] 21 21 t n 1A 51 ]t 19e fe 39 =e 83 %Increase= 81% Pioied sNre= 198% 2 .10-M SW ]Nt4511dIA Ave swrvve#Driveway ]enlrfWp Avf lil'M'nl • � 35 0 30 13g 2i T3 r 68 19 2 WIII Nave[o cNnge to Fwl Access SW 3tIeIn W—AvesWlWert Drlveea i SW fwmAwsYaVrwprmr 2 1a18lwinAw sWMNstP 6W ]lRA LLatl�xw AWA%w o n 3l 0 ?• 51 123 2G 69 t! >• M n � 0 8 32 21 21 R 0 ry ry 45X 28% 1y% 129% 15R 45% 39% 1SR 28% � � 20 14 8 `� r 24 18 >• 1d 4 n 55 9 n 1 52 @ 221 :8 118 91: 1o[aeleet Nlpag in Yigryti Count %kpR4we 41% ] n]LOYEO $ n ] 8Us(rll:A r N i Ilf.�aD'r[n m drw- '� &WAM fw]ltlm MNsu lM x nEMDYSO fYl3dnn fuW�rtAaNsnr= 3Mr 1e).p aAkNaP ] nrr xeg, erwex vwawe=] iW 301101lYwe1l Rirtwr= sM ]urFAfgYraa Glwwy] 29 36 eb 1W 2a Et ro 44 ]0 0 9 38 +� 1g9 39 W ]1 ! 47 0 D o 0 0 0% 0% n 0% 0% 0 g 0 0 v 0 0 30 v 0 38 4T 1as ]D 68 21 ! 47 %rar4r• s1% rlwl: r3we• 9.ox ONe Pr a Sy1fM11 TENW Page 1.12 2020 AM Peak Hour Turning Movement Volumes Federal Way School District Lake Grove Elementary School - 303 SW 308th St, Federal Way, WA 98022 Growth Ratel 3.0% Ex€sting Yearl 2018 Baseline Year 2020 AM Peak G—me r Enter Eail 53 45 2018 Existing 2020 Baseline Redistributed Trips Trip Distribution Project Trips 2020 With Project rw]xM 4 !W ]iMn 6YY0 xw 6whsaN.a nwwcv 4 SW ]OMB 3k'pa Rv[SSACanrpn "--------m-- ]W ]Orar W-OAw]YKserr eawo-nv afw ]Olm Mr6i6A+rt SY4pp.th M1lsawM 4 nolp*.v re3.vvcv SW OMrB SB}Yxw nr0cussY 4 W]aMn fa'arE A. SWICenterpFlr<aY n 43 75 7p 14fi 36 39 11 ]5 42 n n 48 p { 80 21 1. 3a 41 20 SI 45 o a 0 0 v 0 0 o c 0% 0% 0% 0% O% o 0 p 0 0 0 L 0 n n 46 p 21 164 ]B 41 20 71 45 %Increase= 61% wy,p5-- 00% S e1os AM SW 303N SBEart dlvewa 8 3Y1 ]61brAHaatPMW n1svl haw)esrni�F44sys SW 7a�a Bs�ald S ]Mxlaara tall pxxhYwa M]aaIA Y4iN Oa:.s... FiYW.B ]cxanw 72 BB A2 160 66 42 78 78 p n 0 72 e5 . a 45 0 0 B3 r 3] 20 2p 3i 19 b 2B% 53% 2B% f5% 40% 53% 14 w 2B C fi] ! 14 8 2S 24 9] 0 c a 137 60 310 1➢ ]9 M 'A 126 g f4n1M—nan•ul[6or,t Namrn T'PHWCnu n %Increase= 9.1% Prolea S— 215% aloe 6 AM SW ]O&h SV33amb 561vAw5 !W]OMn1u5fY1B]ufsfxwf 6 M'4Gri3)n]Ir•h] WAw■ SW ]6ar1 Eu!]OMa 1rr?'/n9os•>asn rlrid AxS 1 SW.Y�n 61rs'XirYtlu AnS 76 1L 7 31 5 F1 7 81 fi8 25 28 81 11 ] 33 5 636 ] 86 ]0 Ii W ffi R 0 9 0 0 0 �NrnNxwa X 50% 1$% n 3% SY 100% ]% Sp% 31'x 3% 27 S 1 ] 49 I 23 1E• 107 t0 ry 3 34 7 R9 5 10B m 27 31 ? g %Increase= 61%1 Ai 1-- 6.7% Oat, Pnrn,d: 1W12018 TEM W Pape 2,f 2 2020 PM Peak Hour Turning Movement Volumes Federal Way School District Lake Grove Elementary School - 303 SW 308th St, Federal Way, WA 9802.1 Growth Rate 3.O% Earlsting YIUHI 018 Baseline Year z020 2018 Existing 2020 Baseline Redistributed Trips Trip Distribution PM Peak Generator Enter EAiI 23 28 PM Peak Adj—t Sheet Traffic Enler Ealt 12 14 Project Trips 2020 With Project s w 6 PN1 SW nae1651 Ave SW 1 11Y ]grl>•W4?a A*ASK ve SW SW �AavmiA�SW PEA%AwACFxr SW 30Em69EMAw SW SW ]Oiea Sl9m Ave9W e .• 25 7 m A 24 33 132 12 e m x 2T 3 4 25 14 1. t3 23 � � t1 0 0 0 0 x X � 20% 3p>, 40% 21E1k e0% ]f1% 2C% 14% 40% � — 3 1 6 2 10 ] 2 5 e e 29 'S n 0 31 19 150 50 28 a 10 28 24 tl 22 e 25 . 8 W a %ken4aA• 6.1% N v Pmpd Slam= 69% X X 9 5:1610 4:16 PM SW ]oe18 SVlm Ave SWI4VeN 0rlvewa 2 FW iNm�a 411 .2 .11 heveb cNnge to FWl A— i1Y1��1414A A1rSW/W4N •� o 3 12 30 7 T 12 4 2 fEf ]OFA4Ylar a3e 33WR'ea hi :i PEAK —MR {1'f 7tlrM Wat6A atMWxrt bi - f+47�af0uaAw SWAVen ikrvea ry � 78 rig Y 161 Y1 66 fA a 74 � � _ 83 g 31 1. 53 TO 15 7 ry r x 45% 28% 15% 120% 15% 45% ]0% 1]% 28% x N x 4. � 13 r 3 31 a 10 R _ W 4 w 4 rA 5a 2E0 SJ Inewlaelxamml Tran.cc-w 61% x a PreiaN arse• 12 bf 7 5w4r14 V!l YWAAAYsae 4>,r rara 11l3gM 6W71xtll T3{W%b—n2 ] KFypkeo ]W7 YAWN ] Rr44w2en ]W apaln Emmert GyKnwy2 1 PLSIN1Yl1 WeaO•R�fVfhatlm 11 Rr3V�'t0 aW e001nlNWAlYlw�a1: FTF ss 64 }7 143 9 a r +1 s9 s9 g a sa ts2 se 26 r 12 73 %:nom— 61% o o 0 0 0 a% 0% % a 0% o% a% o a 0 a a o 0 6e 6V t37 12 re x Ix n Prokw SAve= 00% Date Pnnled Mt 018 TENW Page 1 012 2020 PM Peak Hour Turning Movement Volumes Federal Way School District Lake Grove Elementary School - 303 SW 308th St, Federal Way, WA 9802E Grewttl Mate 3.0% F�listing Year 20i8 BasolloeYearl 2020 2018 Existing 2020 Baseline Redistributed Trips Trip Distribution PM Peak Generator Enter Exit 23 28 PM Peak Adi... 0 Street Traffic Enter Exit 12 14 Project Trips 2020 With Project { 7eel /kl fA]1lNei]91rY AK 8WICeKw OrKwA'e r[C+afYl'0 l Ex]30nn 3VAdFx ]WTm[er nuiOtYO ' Sw>•�h—d Ave ]kcl:r+r.f a(]10NEy err 2:em llOt6 ✓Lse 3Wlemar Drl Y Irti+trr .a • fY/10Fn ]u1rd Abe 3YPGnlet l7• T.tIC]tORA SW ]OBn3V110 Ax AWTceItln DBrxaY fi0 911 83 SI 19] if 78 i1 33 72 64 10 12 88 55 299 56 B3 t! 27 76 � D o o D o 0 Qj 0% 0% D% 0 0 0 0 64 10 1] m 1C 299 SD 83 IB 2i 78 '$ ry ry %nueace= 61% I111Pf1 xo o a a ry Pmied 6lmre= Do% 3 3:16 [a l:[6 iT1 yq ]A01K atEsse ]1Y ]a1Vr L6Eta pKl+a WIII Nve tocNn9e to -I Access N1']C'WI r{B.eL 5 SW BOfiM SM:esl Drlvewa PPAK f;EAFAATOR Sw amin 6nEert Ddvewav asla ]IIBAae lU` 73 82 128 90 o o ]] 8] 728 Tr 67 0 0 136 10 27 G9 18 18 7r 15 281 13% 2M1% +5% g 1]6% 53% 13% a0% 53% 7 n 12 ]6 ] 7 6 15 107 G n o 118 YI 320 !o 112 21 2fi 165 s ibde rsn+�K•Ircnrsee[karrwm:ralti Co�•K %Inereace= 61% Pruke store= 105% s [o6PIP pWfecesauk'Attn3s3 Ax3 aw>dlmlN fOVrn tRn+tive6 31Y ]srn>wA ae�rfntu Ana 66Y 3rllvr fRd4 %`n }Ytrt Aw] ! PEAK PD+ACERT SW fBln Bvl901+AfvIHAx3 ]W 33Mata2carlsamaA..a 57 T] n 2 38 7 B7A ! 76 W b 42 80 to r7 2 38 2 927 91 65 ST 45 0 C d 0 D } SmF 12% 3% 0x 100x ]% '.O% 33% 3% 6 2 0 0 13 0 ] 3 D !8 15 n 7 39 3 9a0 198 iD 32 45 [ � n %Increece= 81% o n � m n • v Pmp -- 14% oats Pnnted 1N12018 TEN W 4.202