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04-101748 (2) 1 ‘116, CITY OF CITY HALL FederaI Way , Feder 1st Way South• -9 Box 9718 Federal Way,WA • O B (253)661-4000 www.cityoffederal wa y.corn June 8, 2004 Pat Taitano, P.E. Barghausen Engineers, LLC 18215 —72nd Avenue S Kent, WA 98032 Re: Permit#04-101748-000-00-CO; MAPLEWOOD II 33725 IS`Place S Dear Mr. Taitano: The plans and TIR submitted on May 20, 2004 have been reviewed. Please address all following comments with your re-submittal of four sets of plans and two TIR's: Grading and Storm Drainage Plan and Details(sheets C2 through C4); 1. Show invert elevations for all yard drains along with slopes of pipes. 2. Provide an oil/water separator upstream from the proposed bioswale,preferably at SDMH #5. 3. Show the connection between the swale and storm filter more clearly. 4. Provide an underdrain under the proposed bioswale, per the 1998 KCSWDM, because the slope of the swale is less than 1.5%. 5. Provide a flow spreader at the inlet of the swale. (Flow spreader is also recommended at the mid- point of the swale). 6. Show the complete roof drain system, including where it ties into the on-site storm drainage system. 7. Using arrows, indicate the flow/drainage direction of all storm lines in the conveyance system. 8. Show all vertical crossings with storm lines by other underground utilities. 9. Provide traffic directions with entrances and exits delineated in the proposed parking lot. 10. Show the City's standard approval block, located in the lower right corner of all drawings, which is located on the City's web site. Permit number(04-101748-00-CO) must be shown at the top of the approval block. 11. Is the concrete retaining wall on the southeast corner of the site going to remain? Pat Taitano,P.E. Barghausen Engineers, LLC Re: Permit#04-101748-000-00-CO;Maplewood II Page 2 12. Show all trees along 1st Way South that will be removed for construction of the new pedestrian connection with stairs. 13. Ensure that a minimum 0.5-feet freeboard for the 25-year design storm is provided for the proposed bioswale. Temporary Erosion/Sedimentation Control Plan and Details(sheets C5 and C6); 14. Add the following notes; "Cover measures shall be provided to protect disturbed areas and stockpiles. Temporary cover shall be installed if an area is to remain un-worked for more than seven days during the dry season (May — Oct.) or more than two days during the wet season (Oct. 1 —Apr. 30),per Wet Season special provisions, 1998 KCSWDM, Appendix D,page D-42. 15. Ensure that perimeter control of runoff at or near all property boundaries with interceptor ditches (where necessary)and a silt fence are shown to be installed on TESC plan. 16. Show clearing limits around significant remaining trees. Limits are to be no closer than drip line, by a line of 3 feet, orange colored, 2" X 4" stakes, placed no more than ten feet apart, and connected by visible surveyors ribbon. 17. Show the approximate slopes, where indicated, for the interceptor swales. 18. Show the surface area and dimensions for proposed sediment pond. 19. Show the dimensions of the construction entrance. Channelization Plan (sheet C7); 20. Note the revisions in red based on the revised Traffic report, dated April 6, 2004 (enclosed with plans). 21. The curb ramp on the private access driveway must be installed, per City Standard Detail 3-8 (attached). 22. Revise Note 5 to read, "Install 18-Inch White Stop Bar" (field verify location). Stop bar should be behind curb ramp extension.." 23. Plan title should read,"1st Way South/S. 340th Street Channelization Plan". 24. Revise this plan to address all other corrections in red. Technical Information Report(TIR); 25. Include a table of contents,with page numbers provided. 26. The pro-rata share for regional detention as shown in Section II of TIR at Panther Lake is$1,728. Please revise. • Pat Taitano,P.E. Barghausen Engineers, LLC Re: Permit#04-101748-000-00-CO;Maplewood II Page 3 27. Note: Provide a yearly certificate of compliance, stating that maintenance has been completed by Stormwater Management Inc. (This must be done after maintenance has been completed.) 28. Provide a narrative for Section VIII — How Proposed ESC Measures Comply with ESC Standards, in Appendix"D"and Core Requirement#5. 29. Include a water quality facility summary sheet and sketch. 30. Provide a Declaration of Covenant to the City. Please contact me at(253) 661-4132 if you have any questions. Sincerely, Kim Scattarella, P.E. Senior Engineering Plans Reviewer KS:di Attachments cc: Jane Gamble,Associate Planner Doug Klappenbach,Sound Ventures,320—106`h Avenue NE,Suite 100,Bellevue,WA 98004 Project File/KS Day File I:\csdc\docs\save\I673I718016.doc CITY OF • City of Federal Way•Public Works Department 33530 First Way South•PO Box 9718• Federal Way,WA 98063-9718 Phone 253-661-4131 •Fax 253-661-4129•www.ci.federal-way.wa.us v\> FlY LETTER OF TRANSMITTAL Date: August 4, 2004 To: Pat Taitano, PE From: Kim Scattarella, PE Barghausen Engineers Inc. Department of Public Works 18215—72"d Ave. S. Kent, WA 98032 253-661-4132 RE: Maplewood Office Building — Permit # 04-101748-00-CO TRANSMITTED As CHECKED BELOW: 4r Your Review /As Requested /Please Return /For Your Action ITEMS/COPIES DESCRIPTION Plans with comments from July 22, 2004 submittal. Feel free to call if you have any questions. COMMENTS: Please revise the following items, then submit mylars to the City for review and signature. Address all of attached red-lined comments on plans, including; 1) Provide a cross-section of the access street along the west boundary of the site that shows proposed curb and gutter. Include the curb ramp detail (Std. Detail 3-8) 2) Revise the bioswale design to provide the 25-yr. design flow with 6"freeboard on sheet C4 and on plan. 3) On sheet C8, provide a cross-section to show the paving (street section E as shown)for the demolished portion of the median strip. Add a note about removing existing trees and irrigation lines where necessary. cc: Will Appelton,P.E.,Development Services Manager Project File/KS Day File Ikl /30 DEPARTMENT OF COMMUNITY DEVELOPMENT SEIWIcE& POBox9718 await RESu gmedera1 Way WA 98063-9718 �1-661-4000;Fax 253-661-4129 - www.ci.federal-way.wa.us . . JUL 2 2 2 RESUBMITTAL INFORMATION This completed form MUST accompany all resubmittals. Original Tracking Number: - DI - UU Project Name: l)Ct, �-e 14)a 11 Project Address: �2J '0)-rj I st Resubmittal items: • � � rt11v. e4 v<< p(. C, • • r-/IsM T � , 2 , • • I 6,0_,-1 (ed Ione- eLaJn 'T • • I PA, re r? orf C 21) • -' . Contact Person: ai 1CL IA-4,11C, G a, 1 'hone: t f i as)—(c 27}- Resubmittal requested by: t11 -I-I'a I I C Date: 1 I�2(Cq � x }aa > �x . >Q •t� ' , t? x GHA V� CIVIL ENGINEERING,LAND PLANNING,SURVEYING,ENVIRONMENTAL SERVICES mQ' 1Vi/ //, ,t „arm.- Zs /4I1i‘\ 2 July 19, 2004 ,H ENG �,��` f4?1 7 . Kim Scattarella,P.E. JUL 2 2 `6UU4 City of Federal Way 33530— 1st Way South Federal Way,WA 98063 RE: Response to Comment Letter Dated June 8,2004 Federal Way Office Park NWC— 1st Way South and South 340th Street,Federal Way,Washington Permit No. 04-101748-000-00-CO Our Job No. 11301 Dear Kim: We have revised the civil engineering plans and Technical Information Report for the above-referenced project in accordance with your comment letter dated June 8, 2004. Enclosed are the following documents for your review and approval. 1. Four sets of the revised civil engineering plans 2. Two copies of the revised Technical Information Report 3. One set of original redlined plans 4. Original redlined reports (two copies) The following outline provides each of your comments in italics exactly as written, along with a narrative response describing how each comment was addressed: Grading and Storm Drainage Plan and Details(sheets C2 through C4); LX Show invert elevations for all yard drains along with slopes of pipes. Response: Completed. / J2. Provide an oil/water separator upstream from the proposed bioswale, preferably at SDMH #S. Response: An oil/water separator detail has been added to the plan set and Catch Basin No. 5 has been revised to an oil/water separator. /Show the connection between the swale and storm filter more clearly. Response: A blow-up detail has been added to the plan set. 18215 72ND AVENUE SOUTH KENT,WA 98032 (425)251-6222 (425)251-8782 FAX BRANCH OFFICES • OLYMPIA,WA • TEMECULA,CA ♦ WALNUT CREEK,CA www.barghausen.com Kim Scattarella,P.E. City of Federal Way -2- July 19, 2004 74. Provide an underdrain under the bioswale, per the 1998 KCSWDM, because the proposed slope of the swale is less than 1.5%. .9 3.4 S' a92_z/ ' Response: The bioswale slope has been revised to 1.5 percent. 7 /�/l�LF CIS lVo Lw,brJ, G ,, r, 4. Provide a flow spreader at the inlet of the Swale. (Flow spreader is also recommended at the mid-point of the swale). Response: A flow spreader has been added at the inlet and midpoint of swale. A detail has been added to the plan set. how the complete roof drain system, including where it ties into the on-site storm drainage system. Response: The roof drain system is internal; we provide one connection to the proposed building,which ties into Catch Basin No.4. / I� Using arrows, indicate the flow/drainage direction of all storm lines in the conveyance system. Response: Completed. 8. Show all vertical crossings with storm lines by other underground utilities. /Response: Completed. L9 Provide traffic directions with entrances and exits delineated in the proposed parking lot. Re ponse: Completed. . Show the City's standard approval block, located in the lower right corner of all drawings, which is located on the City's web site. Permit number(04-101748-00-CO)must be shown at the top of the approval block.Iesponse: Completed. 1. Is the concrete retaining wall on the southeast corner of the site going to remain? Response: Yes. . Show all trees along 1 s` Way South that will be removed for construction of the new pedestrian connection with stairs. Response: Two significant trees will be removed. Kim Scattarella,P.E. City of Federal Way -3- July 19, 2004 13 Ensure that a minimum 0.5-feet freeboard for the 25-year design storm is provided for the proposed bioswale. Response: Comment noted, see bioswale section and plan for compliance. Temporary Erosion/Sedimentation Control Plan and Details (sheets C5 and C6); P1)4. Add the following notes; "Cover measures shall be provided to protect disturbed areas and stockpiles. Temporary cover shall be installed if an area is to remain un-worked for more than seven days during the dry season (May — Oct.) or more than two days during the wet season (Oct. 1 —Apr. 30), per Wet Season special provisions, 1998 KCSWDM, Appendix D, page D-42. lo Response: Completed. C 1 . Ensure that perimeter control of runoff at or near all property boundaries with interceptor ditches(where necessary)and a silt fence are shown to be installed on TESC plan. Re onse: Completed. . Show clearing limits around significant remaining trees. Limits are to be no closer than drip line, by a line of 3 feet, orange colored, 2"X 4" stakes, placed no more than ten feet apart, and connected by visible surveyor's ribbon. Response: Completed. A note has been added to the fence detail. Y7. Show the approximate slopes, where indicated,for the interceptor swales. Response: Completed. ,1�. Show the surface area and dimensions for proposed sediment pond. jRe onse: Completed. . Show the dimensions of the construction entrance. Response: Completed. Channelization Plan (sheet C7); Note the revisions in red based on the revised Traffic report, dated April 6, 2004 (enclosed with plans). Response: The revision is noted. Kim Scattarella,P.E. City of Federal Way -4- July 19,2004 /The curb ramp on the private access driveway must be installed,per City Standard Detail 3-8 (attached). 9'1-`qX Re ponse: The City Standard Detail is referenced on the plan sheet. . Revise Note 5 to read, "Install 18-Inch White Stop Bar" (field verify location). Stop bar z should be behind curb ramp extension.." JResponse: Completed. �3. Plan title should read, "la Way South/S. 340th Street Channelization Plan". Response: Completed. Revise this plan to address all other corrections in red. Response: Completed. Technical Information Report(TIR); 25. Include a table of contents, with page numbers provided. Response: Completed. 26. The pro-rata share for regional detention as shown in Section II of TIR at Panther Lake is $1,728. Please revise. Response: Completed. 27. Note: Provide a yearly certificate of compliance, stating that maintenance has been completed by Stormwater Management Inc. (This must be done after maintenance has been completed.) Response: Noted. 28. Provide a narrative for Section VIII — How Proposed ESC Measures Comply with ESC Standards, in Appendix "D"and Core Requirement#5. Response: Completed. 29. Include a water quality facility summary sheet and sketch. Response: Completed. • Kim Scattarella,P.E. City of Federal Way -5- July 19,2004 30. Provide a Declaration of Covenant to the City. Response: Completed. We believe that the above responses, together with the enclosed revised civil engineering plans and Technical Information Report, address all of the comments in your letter dated June 8, 2004. Please review and approve the enclosed at your earliest convenience. If you have questions or need additional information,please do not hesitate to contact me at this office. Thank you. Respectfully, • ad40/1/77 Patrick A. Taitano,P.E. Project Engineer PAT/ath/dm/bd 1130 lc.004.doc enc: As Noted cc: Doug Klappenbaugh, Sound Ventures(w/enc) Daniel K. Balmelli,Barghausen Consulting Engineers,Inc. SEP-30-2004 THU 09: 10 AM SOUND VENTURES FAX NO. 4254528422 P. 02 A Client#:22045 ACORDTM CERTIFICATE OF LIABILITY INSURANCE 09/29/04 DATE DnYYY) PRODUCER THIS CERTIFICATE IS ISSUED AS A MATTER OF INFORMATION • USI Northwest of Washington ONLY AND CONFERS NO RIGHTS UPON THE CERTIFICATE 1001 Fourth Avenue,Suite 1800 HOLDER.THIS CERTIFICATE DOES NOT AMEND,EXTEND OR ALTER THE COVERAGE AFFORDED BY THE POLICIES BELOW. Seattle,WA 98154 206 695-3100 INSURERS AFFORDING COVERAGE NAIC# INSURED INSURER A: National Fire Insurance Co of Hartfo 20478 Sound Ventures,Inc. INSURER B. American Casualty Company of Reading 20427 320 106th Ave NE Suite 100 INSURER C: Transportation Insurance Company Bellevue,WA 98004 INSURER D: INSURER Er __ COVERAGES THE POLICIES OF INSURANCE LISTED BELOW HAVE BEEN ISSUED TO THE INSURED NAMED ABOVE FOR THE POLICY PERIOD INDICATED.NOTWITHSTANDING ANY REQUIREMENT,TERM OR CONDITION OF ANY CONTRACT OR OTHER DOCUMENT WITH RESPECT TO WHICH THIS CERTIFICATE MAY BE ISSUED OR MAY PERTAIN,THE INSURANCE AFFORDED BY THE POLICIES DESCRIBED HEREIN IS SUBJECT TO ALL THE TERMS,EXCLUSIONS AND CONDITIONS OF SUCH POLICIES,AGGREGATE LIMITS SHOWN MAY HAVE BEEN REDUCED BY PAID CLAIMS, INSR 411Re TYPE OP INSURANCE POLICY NUMBER OL1T,EFFEC I E POLICY EXPIRATION LIMITS LTR INSR� DATE1MM/PPnY1 DATE(MM/DD _ A GENERAL LIABILITY 1082245396 10/31/03 10/31/04 EACH OCCURRENCE $1,000 000 X COMMERCIAL GENERAL LIABILITY DAMAGE TO RENTED sl00,000 , DAMAGE TO p occutrencel CLAIMS MADE []OCCUR _MED EXP(Any one person) s5,000 PERSONAL a ADV INJURY $1,000,000 GENERAL AGGREGATE $2,000,000 GEN'L AGGREGATE LIMIT APPLIES PER: PRODUCTS.COMP/OP AGO $2,000,000 7 POLICY I�PE a I-1 LOC B AUTOMOBILE LIABILITY 1082245401 10/31/03 10/31/04 COMBINED SINGLE LIMIT S1,000,OOO �^ANY AUTO (Es accident) ALL OWNED AUTOS BODILY INJURY _ SCHEDULED AUTOS (Per person) $ X HIRED AUTOS BODILY INJURY X NON-OWNED AUTOS (Per accident) $ ' PROPERTY DAMAGE $ • (Per accident) 1 - GARAGE LIABILITY AUTO ONLY-EA ACCIDENT $ 1 ANY AUTO OTHER THAN EA ACC $ AUTO ONLY: AGG $ C EXCESSIUMBREL.LA LIABILITY 1082245415 10/31/03 10/31/04 EACH OCCURRENCE $4,000,000 _ 71 OCCUR n CLAIMS MADE AGGREGATE ,$4,000,000 S I�DEDUCTIBLE $ RETENTION $1OL000 _ _ $ _._. WC STATU- WORKERS COMPENSATION AND ToRYMITE DER• I EMPLOYERS'LIABILITY ANY PROPRIETOR/PARTNER/EXECUTIVE E.L.EACH ACCIDENT $ . OFFICER/MEMBER EXCLUOED? E.L.DISEASE-EA EMPLOYEE $ If yes,denctiba under SPECIAL PROVISIONS below E.L.DISEASE-POLICY LIMIT $ OTHER DESCRIPTION OF OPERATIONS I LOCATIONS I VEHICLES/EXCLUSIONS ADDED BY ENDORSEMENT/SPECIAL PROVISIONS ESM Building, LLC is included as a Named Insured on the referenced policies.Location at: 33803 1st Way S.,Federal Way,WA. CERTIFICATE HOLDER CANCELLATION SHOULD ANY OF THE ABOVE DESCRIBED POLICIES BE CANCELLED BEFORE THE EXPIRATION City of Federal Way PATE THEREOF,THE ISSUING INSURER WILL ENDEAVOR TO MAIL _A5_ DAYS WRITTEN Public Works Dept. NOTICE TO THE CERTIFICATE HOLDER NAMED TO THE LEFT,BUT FAILURE TO DO SO SHALL Attn:Wm Appleton IMPOSE NO OBLIGATION OR LIABILITY OP ANY KIND UPON THE INSURER,ITS AGENTS OR P.O.Box 9718 REPRESENTATIVES, Federal Way,WA 98063-9718 AUTHORIZED REPRESENTATIVE • ACORD 25(2001/08)1 of 2 #6136753/M134825 6CMJU v ACORD CORPORATION 1988 SEP-30-2004 THU 09: 11 AM SOUND VENTURES FAX NO. 4254528422 P. 03 IMPORTANT If the certificate holder is an ADDITIONAL INSURED,the policy(ies)must be endorsed. A statement on this certificate does not confer rights to the certificate holder in lieu of such endorsement(s). If SUBROGATION IS WAIVED, subject to the terms and conditions of the policy,certain policies may require an endorsement. A statement on this certificate does not confer rights to the certificate holder in lieu of such endorsement(s). DISCLAIMER The Certificate of Insurance on the reverse side of this form does not constitute a contract between the issuing insurer(s), authorized representative or producer,and the certificate holder, nor does it affirmatively or negatively amend, extend or alter the coverage afforded by the policies listed thereon. • ACORD 25-S(2001/08) 2 of 2 #S136753/M1341325 11361 COMMUNITY DEVELOPMENT SERVICES ED 33325 8'x AVENUE SOUTH•PO BOX 9718 CITY OF FEDERAL WAY, WA 98063-97I8 Federal Way r� 253-835-2607•FAX 253-835-2609 Iuww.cityoffederalway.com 09 y.com RESUBMITTAL INFORMATION This completed form MUST accompany all resubmittals. **Please note: Additional or revised plans or documents foran active project will not be accepted unless accompanied by this completed form. Mailed resubmittals that do not include this form or that do not contain the correct number of copies will be returned ordiscarded. You are encouraged to submit al/items in person and to contact the Customer Service Counter prior to submitting if you are not sure about the number of copies required. ** Project Tracking Number: 0 - 0 7 _ C C� Project Name: N6it-fa U1-)t)Od Project Address: 3 3803 S .. -reo@.va.k Project Contact: Pcu- rcr_j 7' 1 -0 Phone: C-U S' o'l. St,.- 6 2ZZ Resubmitted Items: #of Copies** Detailed Description of Item �1r tin, '� S 4. 1 eci necc�, vplQ.� (G`. rttelIGlS •T-fve- -t.t. .. /'�di� �<:�c'(, teLt& C(&& ,( re9ae;+. ** Submit the same number of copies as required for your Initial application.** Resubmittal requested by: ( Si 1G �,Jei,(,_S Letter Dated: ern ►►► Bulletin#129-August 24,2004 Page 1 of 1 k:\Handouts-Revised\Resubmittai Information 4,014A(.. RESUUIVI ` 1 ELF CIVIL ENGINEERING,LAND PLANNING,SURVEYING,ENVIRONMENTAL SERVICES mVP' _, ✓� �Z MAR 1 4 2005 or( - 1C91 7 - - <r�NG ENG%N4 LETTER OF TRANSMITTAL TO: Sean Wells DATE: March 14,2005 City of Federal Way, Public Works Department SENT VIA: Courier Delivery 33325 8th Avenue South OUR JOB: 11301 Federal Way, WA 98003-6325 RE: Maplewood II Office Building Plan Change Permit No. 04-101748-00-CO '21`� ,: � � 0* p% :�� 1 Each Grading and Storm Drainage Plan The grading and storm drainage plan is enclosed for your review and signature. Please contact me if you have any questions. cc: Signed: ), aL t 2L12.-,4 Patrick A. Taitano,P.E.4--) Project Engineer 18215 72ND AVENUE SOUTH KENT,WA 98032 (425)251-6222 (425)251-8782 FAX BRANCH OFFICES • OLYMPIA,WA • TEMECULA,CA • WALNUT CREEK,CA www.barghausen.com 11301t.025.doc V D COMMUNITY DEVELOPMENT SERVICES FEB33325 8TM AVENUE SOUTH•PO BOX 9718 CITY OF Y, WA 98063-97I8 2 2 2005 FAX 253-835-2609 F REvisi62731:137-2'i6:1;:Federal Wa ;CDINDERAC W A;• ,t G DEPT Y • FEB 212005 RESUBMITTAL INFORMATION)4 This completed form MUST accompany al/resubmittals:1 "1 7 r, • , **Please note: Additional or revised plans or documents for an active project will not be accepted unless accompanied by this completed form. Mailed resubmittals that do not include this form or that do not contain the correct number of copies wi//be retumedordiscarded. You are encouraged to submit all items in person and to contact the Customer Service Counter prior to submitting if you are not sure about the number of copies required. ** Project Tracking Number: 64 - ( d I 7 ± g - 0 y CQ Project Name: (WP LE-Li 00D O-c tce . 1 AO CifFNCIC Project Address: 5303 'VT' Y SO A 1 Project Contact: o A/4 f///1 /3i'ow-- Phone: 'If -A sr- 6 z z z Resubmitted Items: #of Copies** Detailed Description of Item / /?f vi s eo 17/4 k, 5,/1-E-/- c 3 1ZP vi'se-v P/4 h- c/iee t. I ** Submit the same number of copies as required for your initial application.** Resubmittal requested by: Letter Dated: / / (staff Member) Bulletin#129—August 24,2004 Page 1 of 1 k:\Handouts—Revised\Resubmittal Information RECEIVED pr (�(� CIVIL ENGINE: C ��vpistoprittgRINENTAL SERVICES ___.4cw 7/,14.. ) 2 2 2_ 5 o i 11Y � U� LktAtAY FEB 212005 Aso i�I y tiUILD!NG DEPT <r�HG ENG\NF'� LETTER OF TRANSMITTAL 1 ® 17 `4, n TO: Sean Wells DATE: February 22, 2005 City of Federal Way,Public Works Department SENT VIA: Courier Delivery 33325 8th Avenue South OUR JOB: 11301 Federal Way,WA 98003-6325 RE: Maplewood II Office Building Plan Change Permit No. 04-101748-00-CO Quantity Date Description 2 each 2/18/04 Revised Plan(Sheet C3 and C4) Please find attached plan changes regarding the location of the Storm Filter Vault for review and approval. If you have any questions or concerns,please contact me or Pat Taitano at this office. Thanks. cc: Harold Christensen,Lance Mueller&Associates (w/enc.) Signed: Jim Gambrell, SGA Corporation(w/2 enc.) nathan F. rown,E.I.T. Doug Klappenbach, Sound Ventures (w/enc.) Design Engineer II Patrick A. Taitano,Barghausen Consulting Engineers,Inc. 18215 72ND AVENUE SOUTH KENT,WA 98032 (425)251-6222 (425)251-8782 FAX BRANCH OFFICES ♦ OLYMPIA,WA • TEMECULA,CA • WALNUT CREEK,CA www.barghausen.com 11301t.024.doc J jj J C y x(! I1 s i I I 11/4. i1I P133 mi Q 2 ICA 03 CO T C) I I UD� Ui l NN NOD N Cn V GONOD N n VFF µ __ _ _ _ , —i— I�. � _ _ D.Lf7 - - - - �_a - EX. WATERa ois, 1 --_BACK OF WALK a I _ - --_ _ __ nm rim " z I n z0 I- O • Z - "C� µ ci z ci z / tilik I /2 Ant li IIIII ��II NeeMIIIIi� � O ek R..1., „ O.W. ____ ill Alb 411( fiplaimiimi, -ti /ice ,N � DI, (o g Misimr F •t \01 — 11 © ..< 2 A_.)? NnP 0D —�� ,0 N , to w—� ` '� N N N m 0v , o � _m \ II C � , D N (nri rss, N . 2 r,i \ (e) •��mZ� ; \ ry CO N tOD OD NDN µ\CTCT — C\— W frTl C1 pmp0• -�� °'o z co < 7,/' % m_ii r Z. I 7,7:71' D mt Ai D� _ jilt! 09/28/2004 15: 47 2065332196 SGA CORPORATION PAGE 02 SEP-28-2004 TUE 02:57 PM S( VENTURES FAX NO. 425 5422 P. 01 320 106th Avenur. Suitt'100 • �41,41 l/? f3 Il9vuR,WQrthinyton 98004 (425)452 82 r (425)452-$422 f ` Sound Ventures Inc. September 28, 2004 Brian Merisko By Fax: 208-533-2196 SGA Corporation and US Mail 1501 North 200th Street Shoreline. WA 98133-3301 RE: Maplewood Office Building Dear Brian: We dosed our Construction Financing and the Purchase of the Lend this morning. This letter Shall serve as Notice to Proceed with the construction of the building. We are looking forward to a greet project for both all of us. Before begin work on the site, please deliver your Certificate on Insurance to us naming ESM Building, LLC and Sound Ventures Inc. additional insured. Also make sure your subcontractors issue their Certificates of Insurance naming us additional insured before they begin work on the site. Sincerely, Ad.9./; Dou• - •penbach Pre- - nt CC: Cheryl Faulkner Cis 9 2- — t „(5 °.41 StLALeb 1)01) y- -q5Z- '3'ct22. K CITY OF Federal Way Public Works Department PRE-CONSTRUCTION MEETING FORM Project Name: f v'1 APLE.W,L CD Z. Date: CI 12 \ C;i( Project No: 2C.)C 1 C t -C..)C%C, -CC -CC By: Emergency Contact: --NZ-VA/0 kA e_p s C253) $ 5 * 27 :3 (Name&Phone) Entity Name Address Phone ,• 141.q }-- 324- Ib(p +''‘40. Zta(o- zi. -grisr� %/OZ Developer Nip Vie0u INC, 14.- too wl;2 - Ili -`Ism S - A Ci o ri..P 1 T o . 04ok n General Contractor s�, z r s z�'�-- �'-� 3- '�k 9 i Pe% wri► {. 14 to w o, 9 � l 3 % 1.� UMh 4b4'1 wv }leN4 . 2'3 8-IL-(Gtoerl Sub-Contractor L.LeKo CIATC-ffiRWs 9P7Oli3 Sub-Contractor Engineer Architect PO Box 9718 City Planner Federal Way, WA (253) 6.�t, 6 A-L1 f= 98063 P/W Engineering Plans � PO Box 9718 iS 270 Reviewer /1 JCL R�r! 1 Federal Way, WA (253) 66/- 98063 Office Hours PO Box 9718 P/W Inspector 7:00 a.m. to 8:30 a.m. Federal Way, WA (253) 661- Monday- Friday 98063 Pre-Construction Meeting Form Revised 06/26/20031 Page 1 AGENDA FOR MEETING (Checked Items Have Been Discussed) 1. BUILDING DEPARTMENT COMMENTS: rr Special Conditions: 2. PLANNING DEPARTMENT COMMENTS: EIV Special Conditions: • [a" SEPA Conditions: if( Sensitive Area Conditions: Pre-Construction Meeting Form Revised 06/26/20032 Page 2 3. PUBLIC WORKS COMMENTS: R t' Public Works Special Conditions 4. DOCUMENTS REQUIRED AT THE PRE-CONSTRUCTION CONFERENCE: ❑ Issued Permit And Approved Construction Plans --R-- ❑ Copy Of Certificate Of Liability Insurance Naming City Of Federal Way As Additional Insured _5. DOCUMENTS REQUIRED AT THE JOB SITE WHILE UNDER CONSTRUCTION: ❑ Approved plans, shall be annotated with any revisions made during construction. ❑ Building Permit ❑ Right of Way Permits 6. REFERENCED DOCUMENTS: ❑ City of Federal Way Development Standards ❑ 1993 King County Road Standards (KCRS) ❑ 1998 King County Surface Water Design Manual (KCSWDM), Latest Edition ❑ 2002 WSDOT/APWA Standard Specifications and Plans (WSDOT/APWA) ❑ Call One-Call (1-800-424-5555)And Locate All Existing Utilities Prior To Starting Any Work ❑ Call City Of Federal Way Public Works For Storm Drainage Location—253-661-4085 ❑ King County Signs And Traffic Signals— 206-296-8153 Pre-Construction Meeting Form Revised 06/26/20033 Page 3 7. GENERAL REQUIREMENTS: ❑ Safety: Contractor is responsible for safety on site. City may contact WISHA at any time as necessary. ❑ Hours of construction: Monday- Friday 7:00 a.m. to 8:00 p.m., Saturday 9:00am to 8:00pm (FWCC 22-1006). Authorization to work outside these hours must be granted by the Director of Community Development Services. ❑ Procedure for Deviation from Approved Plan: Any minor deviations to the approved plans rhust be reviewed and approved by the inspector prior to construction. Significant revisions to plans shall be submitted to and approved by the City of Federal Way Public Works Review Engineer prior to construction of work. ❑ All materials used must meet WSDOT, King County, or Federal Way specifications. All materials not meeting these specifications must be removed as directed by the inspector. ❑ Electrical permit for power service is required. Contact the Building Department at (253) 661-4115. 8. SAFETY AND HAZARDS: ❑ Protect the traveling public. Ensure pedestrian safety, particularly along school routes, provide for emergency services and vehicles and protect site from children. ❑ Traffic signing must be meet Manual Uniform Traffic Control Devices (MUTCD) standards. ❑ Flaggers must have cards and must have attended a flagging course or an off duty police officer may be hired. ❑ Sequential arrow board/VMS signs required on all major streets in addition to flaggers. ❑ Traffic Control: Submit traffic control plan to inspector 7 days (Seven) prior to any lane closures, rerouting of traffic, etc. No Detours or Closures Allowed without approval from Street Systems Manager. ❑ Provide barricade as follows: 1. Temporary closures. 2. Street termination and temporary turnarounds. 3. Flashing lights must be on barricades for nighttime visibility. ❑ Haul routes: Submit a haul route for trucks using City streets prior to performing work. Cover all materials, as necessary, to prevent debris from falling onto public streets. Pre-Construction Meeting Form Revised 07/09/20034 Page 4 c ' 9. THE PUBLIC WORKS DEPARTMENT INSPECTOR MUST BE NOTIFIED AT LEAST TWO WORKING DAYS BEFORE THE FOLLOWING STAGES OF CONSTRUCTION: Call (253) 661-4131 ❑ Prior to starting clearing, grading &erosion control work ❑ Prior to starting any underground utility work or street embankment within public right of way ❑ Prior to placing curb, gutter, and sidewalk forms and pouring concrete ❑ Prior to pouring cast-in-place concrete structures, e.g., traffic signal, street light bases, storm vaults ❑ Prior to placing crushed rock on roadway subgrades, or paving roadways ❑ Prior to installing control structures for storm water facilities 10. TEMPORARY EROSION/SEDIMENTATION CONTROL PLAN (TESC): ❑ Erosion and sediment controls shall be installed as the first step of construction. Verify construction schedule and sequence: 1. Silt fences - Bury bottom of fence with compacted native material. 2. Install Silt traps/ponds as required. 3. Storm drain inlet protection - Place filter sock between frame and grate on all catch basins on and off-site. 4. Protect all streams and water bodies. 5. Control Dust. ❑ The following areas shall be flagged: 1. Wetlands 2. Streams 3. Lakes and ponds 4. Steep slopes 5. Native Growth Protection Easements (NGPE) 6. Significant Trees - Install orange construction fence around dripline of tree. ❑ The Public Works Inspector may require additional erosion and sedimentation control measures based on field conditions and weather. ❑ Erosion and sedimentation controls are required throughout the life of the project. Contractor shall inspect site after each rain event to ensure TESC measures are effectively working. Pre-Construction Meeting Form Revised 06/26/20035 Page 5 ❑ Control mud onto streets: 1. Install rock construction entrance. Use truck wash depending on site conditions. 2. Wash truck tires if necessary, or as directed by the PW Inspector. 3. Keep adjoining roads clean. Clean roadways with sweeper; do not use water trucks. ❑ All cleared areas must have temporary or permanent cover if the area is to remain unworked for more than 7-days during the dry season ( 5/1 to 9/30) or for more than 2-days during the wet season ( 10/1 to 4/30)to prevent sediment-laden water from leaving the site or entering the storm drainage system. ❑ Provide an area on-site for cleaning concrete trucks. Effluent from concrete operations shall not enter any storm drainage systems. ❑ Use spill response kits when constructing near bodies of water. 11. PERMANENT STORM DRAINAGE FACILITIES: ❑ Location conflicts- Relocation shall be designed by a design engineer and approved by the City Review Engineer. ❑ Drainage Structures: 1. All Sections including adjustment sections - requires rubber gaskets. 2. Grout catch basins to create a watertight structure. 3. Ladders - extend to within 12 inches from bottom of catch basins and securely fasten to CB. 4. Stencil at inlets " City of Federal Way,Drains to stream--Dump no pollutants". 5. Locking covers and grates required outside of traveled roadway. 6. Wire mesh reinforced collar required for all frames outside of asphalt/concrete paved areas. ❑ Lot stub outs installed and staked prior to final construction approval. ❑ Biofiltration swales: 1. Shall be operational before acceptance. • 2. Uniform profile shall be along entire length of swale, no ponding. 3. Bottom width shall be level and uniform. 4. Construct side slopes per plan. 5. Provide copy of seed mix label to inspector prior to seeding. Water the seed mixture as necessary to ensure germination. ❑ Overflow,spillways,gravel filter windows, must be constructed per plans and spec's, no deviations. As-built for verification is required. ❑ Quarry rock must be sound "hard" durable rock. No recycled material, concrete, or asphalt rubble. Pre-Construction Meeting Form Revised 06/26/20036 Page 6 ❑ Bevel ends of culverts. ❑ Locking vane grate require for all C.B.=s located in rights-of-way. 12. RETENTION/DETENTION FACILITIES AND WET POND/VAULTS: ❑ Property corners on easements and tracts must be permanently staked and facilities must be built within the easement as shown on the plans. ❑ Secure site with fence and access gate as required per approved plans. ❑ Pond slopes shall be 3:1 or flatter except where noted on approved plans. ❑ Provide access road to control structure, pond bottom, and to all vaults or tanks. ❑ Restrict or 'T' section riser and gate control assembly: 1. Inspection of'T' section prior to installation to verify orifice sizes is required 2. Shear Gate and pipe joints must be watertight. 3. Provide a minimum 2 foot radius clearance area around ladder. 4. Provide a minimum 2 foot of clearance between riser and inlet pipe(s). 5. Install riser straps and shear gate rod. ❑ Covers on access manholes must be solid, round, locking lids marked "Storm" or "Drain". 13. ROADWAY CERTIFICATION REQUIREMENTS (Minimum test and sample frequency)(Additional tests may be required as the inspector deems necessary.): ❑ Density Tests, WSDOT Sec. 2-03. Performed by: Independent Lab ❑ Compaction Control Tests methodology: 1. Compaction shall meet the requirements of FWDS Sec. 3.2.15 and WSDOT Standard Specifications. 2. Granular materials, WSDOT Method 606 (maximum density curve) granular materials greater than 30% retained by No.4. 3. Proper moisture must be maintained throughout placing and compacting; moisture for compaction must be within 3% of optimum. Pre-Construction Meeting Form Revised 06/26/20037 Page 7 , ❑ Trenches: FINDS 3.2.17 Sanitary, storm, water, gas, and power, etc., in the roadway prism: 1. One test per 100 lineal feet, minimum, on roadway. 2. Test up to 50% trench depth 95% compaction required. 3. One test per 100 lineal feet, minimum, under curb. 4. Water mains WSDOT/APWA Sec. 701-.3(1) 95% of maximum density as determined by ASTM D1557 (Standard Proctor). 5. In place densities shall be determined by nuclear methods. ❑ Sub-grade, WSDOT/APWA Sec. 2-06. 1. One test per 100 linear feet, minimum, on each foot of fill. 2. A minimum of one test per lift. 3. Compaction method "B" shall be used unless otherwise specified. 4. All materials must be from WSDOT pre-qualified pits. 5. Compaction reports must be submitted to inspector before placing crushed surfacing, asphalt, concrete curb, and sidewalk (including trench restoration when tests may be required in each lift). 6. Inspector may require additional tests on subgrade, concrete, or asphalt. The contractor shall pay for the costs of testing. 7. Density test reports must be performed one week, and submitted to the inspector at least three days prior to installing paving, sidewalks or curbs. 8. The developer/contractor shall "proof roll"the sub-grade,while the Public Works inspector is present,to verify the sub-grade is visibly firm,compact,and suitable for surfacing. Compaction reports shall be submitted to the Public Works Inspector. ❑ Asphalt Construction, WSDOT/APWA Sec. 5-04. 1. Surface smoothness maximum variation in 10' parallel to center line is 1/8" and transverse 1/4". 2. Compaction (92% of maximum density). 3. Five tests per day or 400 tons, or minimum of two tests. 4. Thickness verified by coring, two cores per 50,000 sf or fraction thereof, or as determined by inspector in field. 5. All asphalt to be removed must be saw cut. Additional asphalt may be required for removal by the inspector. 6. Abutting edges, curb, and ATB, must be thoroughly cleaned and tacked prior to asphalt paving, with CSS-1 or STE-1. Seal all final joints, and over cuts of saws with same. ❑ Concrete Construction. 1. Tests, WSDOT/APWA Section 8-04.3(1) and 6-02.5 2. Weather limitations. During the first 14 days of curing, the contractor must protect from freezing. 3. Concrete specification, Class 3000, 11/4"rock,4-6%air entrained, 3"slump and must be verified on delivery tickets. Any deviation from this specification must be requested in letter form, 48 hours before concrete is placed. Pre-Construction Meeting Form Revised 06/26/20038 Page 8 4. Clear curing compound required. No Calcium Chloride allowed. 5. Protect concrete. No graffiti,footprints,or other objectionable marks allowed or panel will have to be replaced. 6. No Monolithic Pours. 7. Curbs shall conform to Federal Way Drawing No. 3-4. 8. Joints in curb and gutter shall conform to Federal Way Drawing No. 3-3. 9. Wheelchair ramps shall conform to FW Drawings No's. 3-8, 3-9, 3-10,and 3-11. 10. Concrete Structures Certification: Bridges, Retaining Walls,and Retention Vaults designed by a professional structural engineer require special inspections by same. 11. No saw cutting joints. Joints in sidewalk must align with joints in curbs. 12. 12" diameter PVC Sleeve 18" in depth for all mail box post and sign posts in sidewalks. 14. ILLUMINATION AND TRAFFIC SIGNAL INSTALLATION ❑ All signals will be subject to any necessary electrical inspections as well as requirements as set forth in the WSDOT Design Manual and the WSDOT/APWA Standard Specifications. ❑ King County Traffic Signal Technician will assist with final inspection. A City of Federal Way electrical permit is required prior to connection of the service panel. 15. RESTORATION OF THE RIGHT-OF-WAY ❑ Contractor must leave right of way in a condition equal to existing or better than pre- construction condition. ❑ Seed, mulch, and fertilize for erosion control and appearance. ❑ All drainage systems must be fully restored and operational before final acceptance. 16. PERFORMANCE &ACCEPTANCE OF WORK ❑ Final Inspection and Anal Acceptance 1. Call PW inspector to schedule final inspection at least 2-weeks prior to building final. Allow 5 days for the PW inspector to prepare list of deficiencies (punch list). 2. Complete punch list items before calling for re-inspection. 3. The applicant shall respond and correct punch list deficiencies prior to construction acceptance. 4. Submit as-built drawings to the City for review.As-built review ill be performed on an hourly basis. f t 2 P� ��-1 t S$ 5. Statutory Warranty Deed related to right-of-way dedication shall be recorded (if necessary). Note: Construction inspection will be charged on an hourly rate. Pre-Construction Meeting Form Revised 06/26/20039 Page 9 17. 70% RELEASE OF PERFORMANCE/MAINTENANCE BOND OR ASSIGNMENT OF FUNDS ❑ Prior to 70% release of bond or assignment of funds, the following shall be completed: 1. Acceptance of as-built drawings by the City. 2. Payment of all unpaid fees (including inspection and as-built review fees). 3. Acceptance by the Public Works Inspector that all punch list deficiencies have been corrected. 18. FINAL ACCEPTANCE / 2-YEAR MAINTENANCE INSPECTION AND RELEASE ❑ Applicant is responsible for maintaining all private and public operating systems and all site work for a period of 2 years following approval of the project (post performance). ❑ Prior to releasing the remaining portion of the performance/maintenance bond or assignment of funds, the following shall be completed: 1. The applicant shall call the Public Works Department to schedule a 2-year maintenance inspection; a punch list of deficiencies will be prepared if necessary. 2. The applicant shall respond and correct punch list deficiencies (if required). 3. Pay all unpaid fees (includes inspection fees). 19. SIGNATURES: As Developer or Designated Representative, I understand the requirements of the City of Federal Way Inspection procedures and agree to abide by the conditions of the permit and the pro dures disc ss . )4144- 040 /e-l'— Contr r er . n re 7TtQe City Inspe r Review Engi er Pre-Construction Meeting Form Revised 06/26/200310 Page 10 SEP-20-2004 MON 04: 19 PM SOUND VENTURES FAX NO, 4254528422 P. 01 320-108`h Avenue NE,Suite 100 Bellevue,Washington 98004 T(206)223-9500 F(425)452-8422 Sound Ventures Inc. FAX COVER SHEET DATE: 9/20/04 ORIGINAL TO FOLLOW: No TOTAL PAGES: VIA: Facsimile FROM: Doug Klappenbach REGARDING: Maplewood Office Building Permit#04-101748-000-00-CO TO COMPANY FAX# PHN # Will Appleton City of Federal Way 253-835-2709 253-835-2730 COMMENTS: Enclosed is a copy of the Agreement and Proformance/Maintenance Bond . If you have any questions or problems regarding transmission of this fax, please calf our office at(206) 223-9500. rho information contained in this facsimile message is privileged and confidential and intended only for the use of the individualnndividuals or entity/entities named above. If the reader of this message is not the intended recipient, or employee or agent responsible for delivering such to the intended recipient,you are hereby notified that any dissemination, distribution and/or copying of this communication is prohibited. If this communication hes been received in error,please notify us immediately by telephone and return the original message to us at the above address. Thank you. SEP-20-2004 MON 04: 19 PM SOUND VENTURES FAX NO, 4254528422 P. 02 Applicant: Sound Ventures, Inc Bond #: Project: Maplewood Office Building Permit#: 04-101748-000-00-CO Property Address: ' 33803 15t Way South Bond Amount: $273,421,00 Federal Way, WA Cash Deposit Amount: $6,835.53 CITY OF FEDERAL WAY AGREEMENT AND I'T:R ORMANCE/MA3N TENANCE BOND THIS AGREEMLNT ("Agreement") is dated effective this day of .. .. LOAM- parties ("Parties") to this Agreement arc the City of Federal Way, a Washington municipal corppora`. . ') and Sound Ventures, Inc, a Washington corporation and SGA Corporation, a Washington corporation, (collectively referred to herein as "Applicant"). A. The Applicant is required to perform certain work and/or complete certain improvements, including construction and maintenance of storm. drainage, parking lot and street improvements on i%' Way South at the above referenced address located in Federal Way, Washington in connection with Applicant's Land Usc Application under the_above-referenced permit number("Permit"); B. The improvements will he constructed or the work performed in accordance with record drawings and approved plans on file with the City("Plans"); C. The City has determined that the Applicant must post security with the City pursuant to Sections 22-146 through 22-159 of the Federal Way City Code("FWCC") as now existing or hereafter adopted or amended,to guarantee Applicant's performance of the required construction of improvements or performance of work,maintenance or repair in accordance with the Plans as a condition of granting the Permit. NOW,THEREFORE, the Parties agree as follows: 1. Improvements. Applicant shall construct all improvements and perform all maintenance pursuant to the Plans, to the City's satisfaction ("Work"), The obligation to maintain the improvements shall continue for a period of two (2) years after issuance of the certificate of occupancy or final inspection, or such longer period as required by the FWCC or other applicable law,rule or regulation. 2. Completion of Work, The Applicant shall complete the Work to the City's satisfaction, within the time period prescribed by the City, and in full compliance with the Plans, including any approved amendments thereto, and in conformance with all applicable laws,rules or regulations. 3. Performance/Maintenance Bond. Applicant shall deliver the fully executed Performance/Maintenance Bond to the City, in the form attached hereto as Exhibit "A" and incorporated by this reference ("Bond"), to guarantee Applicant's performance of the construction of the improvements and/or maintenance of the improvements pursuant to the Plans. 4. Release of Bond. If the Principal constructs the improvements in accordance with the terms of the Bond, the Permit and all applicable law, the sum of the Bond shall be reduced by seventy percent(70%) after final inspection and approval of the improvements by the City and the City will deliver to Principal the fully executed Partial Release of Bond attached hereto as Exhibit "B". Except as set forth in the preceding sentence, the Bond shall remain in full force and effect. That portion of the Bond equal to thirty percent (30%) of the original penal sum shall remain in full force and effect for two (2) years after final inspection and approval, as a maintenance bond to guarantee against defective materials and workmanship in the construction of the improvements and to insure continued maintenance of the improvements. Two (2) years after final inspection SEP-20-2004 MON 04: 19 PM SOUND VENTURES FAX NO. 4254528422 P. 03 • and approval of the improvements and performance of the maintenance, the City will release the remaining portion of the Bond by executing and delivering to Principal the Full Release of Bond attached hereto as Exhibit "C,' 5. Right to Complete Work, In the event the Applicant fails to perform the Work, the City may, but in no event is it obligated to, request the disbursement of the Bond from the surety and perform any of the necessary Work. Upon demand, Applicant agrees to pay the City an amount equal to all of the City's costs and expenses in performing such Work in excess of the amount of the Bond. 6. Notice, The Community Development Department of the City shall be given forty-eight (48) hours notice prior to the corrunencement of the Work. 7, Indemnification. Applicant agrees to indemnify and hold the City, its elected officials, officers, employees, agents, and volunteers harmless from any and all claims, demands, losses, actions and liabilities (including costs and attorney fees) arising from, resulting, or connected with this Agreement and the Bond, including without limitation,the City's performance of the Work pursuant to Section 5 herein. 8. Administrative Cash Deposit, In addition to the amount of the Bond,Applicant agrees to pay a cash deposit to the City pursuant to Section 22-151 of the FWCC,upon the execution of this Agreement equal to the following percentages of the amount of the Bond: Amount of Bond Amount of Cash Deposit Up to$20,000 5%of Bond(minimum$100) $20,001 -$50,000 4%of Bond $50,001 -$100,000 3%of Bond $100,001 and up 2-1/2% of Bond The cash deposit may be used by the City to cover its actual expenses in administering this Agreement and,if necessary, collecting and using the proceeds from the Bond. 9. Remedies Cumulative. No remedy provided for by this Agreement shall be deemed exclusive, but shall be deemed cumulative and in addition to every other remedy available to the City at law, in equity or by statute. Applicant's liability under this Agreement is not limited to the amount of the Bond. O. License. Applicant shall record a license in the form attached hereto as Exhibit "D" and incorporated herein by this reference with the King County Department of Records, immediately upon the execution of this Agreement and at Applicant's cost. 11. General Provision& This Agreement may not be amended except by written agreement signed by the Parties. Any provision of this Agreement which is declared invalid, shall not invalidate the remaining provisions of this Agreement. The failure or delay of the City to declare any breach or default shall not waive such breach or default. This Agreement may not be assigned by any Party without the written consent of the other Party. SEP-20-2004 MON 04: 19 PM SOUND VENTURES FAX NO. 4254528422 P. 04 This Agreement shall be binding upon and inure to the benefit of the Parties' successors in interest. Time is of the essence. SOUND VENTURES,INC I3y: oug I penb /•esident 320 'NE Bellevue,WA 98004 206.223,9500 SGA CORP RATI By: ames W.Abbott,President 1501 N 200th Street Shoreline,WA 98133-3301 206.533.2191 CITY OF FEDERAL WAY By; David H.Moseley,City Manager 33325 8Th Ave S PO Box 9718 Federal Way, WA 98063-9718 ATTEST! • City Clerk,N.Christine Green,CMC • APPROVED AS TO FORM: Patricia A.Richardson,City Attorney SEP-20-2004 MON 04: 19 PM SOUND VENTURES FAX NO, 4254528422 P. 05 STATE OF WASHINGTON ) ss. COUNTY OF Nrs ) On this day personally appeared before me Doug Klappenbach, to me known to be the President of Sound Ventures, Inc, that executed the foregoing instrument, and acknowledged the said instrument to be the free and voluntary act and deed of said corporation, for the uses and purposes therein mentioned, and on oath stated that he/she was authorized to execute said instrument and that the seal affixed, if any, is the corporate seal of said corporation. GIVEN my hand and official seal this /7 day of VL-Pr 20pr EINotary ublic hington '7�44f's ml . :BBOTT ed/printed name of notary) N EXPIRES otary Public in and for the State of Washington. , 2008 My commission expires lP.// . STATE OF WASHINGTON ) _t_____ )ss. _6 COUNTY or. ) On this day personally appeared before me James Abbott,to me known to be the President of SGA Corporation, that executed the foregoing instrument, and acknowledged the said instrument to he the free and voluntary act and deed of said corporation, for the uses and purposes therein mentioned, and on oath stated that he/she was authorized to execute said instrument and that the seal affixed,if any,is the the corporate seal of said corporation. GIVEN my hand and official seal this / day of_ iJ be-r7- ,204 eit-ii, a � Notary Public I (oi eje. L-. P 0-, State of Washington (typed/printed name of notary) / Notary Public in and for tl State of'�Washin ton. 1 CARRIE LYNN PAULSON My commission expires - �'4d4-i— I My Appointment Expires May B, 2007 I:\esdcklucs\savc\24942859043.duc G ALA W FORMS\Agreement&PertorrnAnceMaintenanceBond Rev 08/04 SEP-20-2004 MON 04: 19 PM SOUND VENTURES FAX NO. 4254528422 P. 06 EXHIBIT B PARTIAL RELEASE OF BOND # The undersigned hereby acknowledges that a portion of the conditions of the Agreement and Performance/Maintenance Bond for Sound Ventures, Inc and SGA Corporation, have been satisfied and hereby authorizes the release of an amount equal to One Hundred Ninety One Thousand Three Hundred Ninety Four and 70/100 Dollars ($191,394.70). The remaining funds equaling thirty (30%) of the cost of the work or improvements shall be retained by the City for a period of two (2) years as security for Assignor's performance of all maintenance for the above described project and as a guarantee against defective materials or workmanship in the construction and maintenance of such improvements. DATED this day of , 200_. CITY OF FEDERAL WAY By: (Name, Title) SEP-20-2004 MON 04: 19 PM SOUND VENTURES FAX NO. 4254528422 P. 07 • EXHIBIT C FULL RELEASE OF BOND # TERMINATION OF LICENSE The undersigned hereby acknowledges that the two (2) year maintenance period has expired, that the work or improvements covered by the Agreement and Performance/Maintenance Bond for Sound Ventures, Inc and SGA Corporation, have been completed to the City's satisfaction and that the City is not aware of any defect in workmanship or materials. Accordingly, the undersigned hereby releases the sum of Eighty Two Thousand Twenty Six and 30/100 ,Dollars ($82,026.30). The undersigned further releases all right, title and interest granted to the undersigned by reason of a certain License Agreement recorded under King County Recording No. ("License Agreement") and acknowledges that all obligations and rights contained in the License Agreement are hereby terminated. DATED this day of , 200_ CITY OF FEDERAL WAY By: (Name, Title) SEP-20-2004 MON 04: 19 PM SOUND VENTURES FAX NO, 4254528422 P. 08 FILED FOR RECORD AT REQUEST OF: MAIL TO: CITY OF FEDERAL WAY PO BOX 9718 FEDERAL WAY, WA 98063-9718 ATTN: Will Appleton EXHIBIT D LICENSE Grantor (s): Sound Ventures, Inc, a Washington Corporation Grantee (s): CITY OF FEDERAL WAY, a Washington Municipal Corporation Property Legal Description (abbreviated): Lot 5 West Campus Office Park Div 2, Lot 1, KC Short Plat No. 981016R, WM Additional Legal Description indicated below. Assessor's Tax Parcel ID#(s): 926504-0150 The undersigned owner of certain real property located in Federal Way, Washington and legally described as follows: Lots 13 through 15, inclusive, West Campus Office Park Division 5, according to the plat thereof, recorded in volume 116 of plats, pages 62 & 63, in King County, Washington, as amended by plat alteration of West Campus Office Park No. 5, according to the plat thereof, recorded in volume 148 of plats, pages 57 & 58, in King County, Washington. Together with easements for pedestrian and vehicular access granted under recording numbers 8910031149 and 8910031151 ("Property") hereby grants an irrevocable license to the City of Federal Way ("City") and the City's agents, employees, contractors or representatives to enter upon the Property to inspect the construction of improvements, the pe - of work or to allow the City to perform any necessary maintenance or r , I rpti ,hat certain Agreement and Performance/Maintenance Bond dated :,; tered into between the City and the undersigned and incorporated herein by this reference. SEP-20-2004 MON 04:20 PM SOUND VENTURES FAX NO. 4254528422 P. 09 DATED this 1 day ofiF 200k SOUND VENTURES, INC By: oug pen , President 320 " NE Bell ue, WA 98004 206.223.9500 STATE OF WASHINGTON ) // ) ss. COUNTY OF l�?AJ 6r ) On this day personally appeared before me Doug Klappenbach, to me known to be the President of Sound Ventures, Inc, the corporation that executed the foregoing License, and acknowledged the said instrument to be the free and voluntary act and deed of said corporation, for the uses and purposes therein mentioned, and on oath stated that he/she was authorized to execute said instrument and that the seal affixed, if any, is the corporate seal of said corporation. GIVEN my hand and official seal this /76day of 487e,441 , ZOO , 4,.._ AZ (notary signature) State of Washington rj�� Notary Public �� ! l JAMES W.ABBOTT /foe S MY COMMISSION EXPIRES August 11, 2008 (typed/printed name of notary) Notary Public in and for thA State of Was ington. My commission expires X •7/' ?GA( I:\csdc\docs\save\24942859043.doc G:\LAW FORMS\Agreement&PerformanceMaintenance8ond Rev. 09/04 SEP-20-2004 MON 04:20 PM SOUND VENTURES FAX NO, 4254528422 P. 10 Bond# 52BCSCZ7411 EXHIBIT A Project: Maplewood Office Building Permit#: 04-10174R-000-00-CO CITY OF FEDERAL WAY PERFORMANCE/MAINTENANCE BOND KNOW ALL PEOPLE BY THESE PRESENTS: We, the undersigned SGA Corporation, ("Principal") and Developers Surety and Indemnity Company, the undersigned corporation organized and existing under the laws of the State of Iowa and legally doing business in the State of Washington as a surety ("Surety"), are held and firmly bound unto the City of Federal Way, a Washington municipal corporation, ("City") in the penal sum of Two Hundred Seventy Three Thousand Four Hundred Twenty One Dollars and no/100 (S273,421.00) for the payment of which they firmly bind themselves and their legal representatives, successors and assigns,jointly and severally. This obligation is entered into pursuant to the statutes of the State of Washington and the ordinances,regulations, standards and policies of the City,as now existing or hereafter amended or adopted. The Principal has entered into an Agreement with the City dated , 200_ for construction and maintenance of stmm drainage,parking lot and street improvements on 1 x`Way South. NOW, THEREFORE, if the Principal shall perform all the provisions of the Agreement in the manner and within the time period prescribed by the City, or within such extensions of time as may be granted under the Agreement, and shall pay all laborers, mechanics, subcontractors and material men or women, and all persons who shall supply the Principal or subcontractors with provisions and supplies for the carrying on of said work, and shall hold the City, their officials, agents, employees and volunteers harmless from any loss or damage occasioned to any person or property by reason of any carelessness or negligence on the part of the Principal, or any subcontractor in the performance of said work, and shall indemnify and hold the City harmless from any damage or expense by reason of failure of performance as specified in the Agreement, or from defects appearing or developing in the material or workmanship provided or performed under the Agreement within a period of two (2) years after its final acceptance thereof by the City,then and in the event this obligation shall be void; but otherwise, it shall be and remain in full force and effect. And the Surety, for value received, hereby further stipulates and agrees that no change, extension of time, alteration or addition to the terms of the Agreement or to the work to be performed thereunder or the specifications accompanying the same shall in any way affect its obligation on this bond, and it does hereby waive notice of any change, extension of'time, alterations or additions to the terms of the Agreement or to the Work. The Surety hereby agrees that modifications and changes may be made in the terms and provisions of the Agreement without notice to Surety, and any such modifications or changes increasing the total amount to be paid the Principal shall automatically increase the obligation of the Surety on this Performance Bond in a like amount, such increase, however, not to exceed twenty-five percent (25%) of the original amount of this bond without the consent of the Surety. Within forty-live (45) days of receiving notice that the Principal has defaulted on all or part of the terms of the Agreement, the Surety shall make a written commitment to the City that it will either: (a) cure the default itself within a reasonable time period, or (b) tender to the City, the amount necessary for the City to remedy the default, including legal fees incurred by the City, or (c) in the event that Surety's evaluation of the dispute is not complete or in the event the Surety disputes the City's claim of default, the Surety shall notify the City of its SEP-20-2004 MON 04:20 PM SOUND VENTURES FAX NO. 4254528422 P. 11 finding and its intent, if any,to interplead. The Surety shall then fulfill its obligations under this bond, according to the option it has elected. Should Surety elect option(a)to cure the default,the penal sum of the Bond shall be reduced in an amount equal to the costs actually incurred by the Surety in curing the default. If the Surety elects option(b), then upon completion of'the necessary work, the Ciry shall notify the Surety of its actual costs. The City shall return, without interest, any overpayment made by the Surety and th.e Surety shall pay to the City any actual costs which exceed the City estimate, limited to the bond amount. Should the Surety elect option(c), the Parties shall first complete participation in mediation, described in the below paragraph, prior to any interplead action. In the event a dispute should arise between the Parties to this Bond with respect to the City's declaration of default by the Principal,the Parties agree to participate in at least four hours of mediation in accordance with the mediation procedures of United States Arbitration and Mediation("USA&M")_ The Parties shall proportionately share in the cost of the mediation. The mediation shall be administered by the Seattle USA&M office,4300 Two Union Square, 601 Union Street, Seattle, Washington 98101-2327. The Surety shall not interplead prior to completion of the mediation.itk ((� DATED this( ? 'day of Se.p"Teol4k ,2C1 , CORPORATE SEAL OF PRINCIPAL: SGA Corporati, By: ? 1 ame of Person Executing Bond) I- � GL � (Title) 1501 N 200th Street Shoreline,WA 98133-3301 206.533,2191. CERTIFICATE AS TO CORPORATE SEAL I hereby certify that I am the(Art) Secretary of the Corporation named as Principal in the within bond; that •,7;iisf s , d who signed the said bond on behalf of the Principal, was ___Y- .5%d _ of the said Corporation; that I know his or her signature thereto is genuine, and that said bond was duly signed, sealed, and attested for and in behalf of said Corporation by authority of its governing body. Secretary or Assistant Secretary SEP-20-2004 MON 04:20 PM SOUND VENTURES FAX Na 4254528422 P. 12 • CORPORATE SEAL OF SURETY: Hartford Casualty Insurance Company Surety At /Y`? n (/ Attorney-in-Fact (Attach Power of Attorney) Roxana Palaclos (Name of Person Executing Bond) PO Box 3Q1$_,.,...,..- Bothell, WA 98041-3018 (Address) 425-489-4500 (Phone) APPROVED AS TO FORM: Patricia A.Richardson, City Attorney ]:\ dc\docsw5ve\24942859O43,doc \1-awForm sTerformanceMainlennnceBond Rev.6/04 SEP-20-2004 MON 04:20 PM SOUND VENTURES FAX NO. 4254528422 P. 13 • Direct Inquiries/Claims to: POWER OF ATTORNEY THE HARTFORD BOND,T-4 690 ASYLUM AVENUE HARTFORD, CONNECTICUT 06115 call:888-266-3488 or fax:860-757-5835 KNOW ALL PERSONS BY THESE PRESENTS THAT: Agency Code: 52-817010 XHartford Fire Insurance Company, a corporation duly organized under the laws of the State of Connecticut I X j Hartford Casualty Insurance Company, a corporation duly organized under the laws of the State of hdiana X Hartford Accident and Indemnity Company,a corporation duly organized under the laws ofthe State of Connecticut Hartford Underwriters Insurance Company,a corporation duly organized under the laws of the State of Connecticut Twin City Fire Insurance Company,a corporation duly organized under the laws of the State of Indiana Hartford Insurance Company of Illinois, a corporation duly organized under the laws ofthe State of Illinois Hartford Insurance Company of the Midwest, a corporation duly organized under the laws of the State of Indiana Hartford Insurance Company of the Southeast,a corporation duly organized under the laws of the State of Florida aving their home office in Hartford, Connecticut, (hereinafter collectively referred to as the"Companies") do hereby make, constitute and appoint, up to the amount of unlimited: Steven K. Bush, M.J. Cotton, Nancy J. Osborne, Mike Amundsen, S. M. Scott, Darlene Jakielski, Julie M. Glover, Jim W. Doyle Michael A. Murphy, Lawrence J. Newton, Andy D. Pri/l, Roxana Palacios, Jim S. Kuich, Viki Baum, John C. Beeson of Bothell, WA their true and lawful Attorney(s)-in-Fact, each in their separate capacity if more than one is named above, to sign its name as surety(ies) only as delineated above by ®, and to execute, seal and acknowledge any and all bonds, undertakings, contracts and other written instruments in the nature thereof, on behalf of the Companies in their business of guaranteeing the fidelity of persons, guaranteeing the performance of contracts and executing or guaranteeing bonds and undertakings required or permitted in any actions or proceedings allowed by law. In Witness Whereof, and as authorized by a Resolution of the Board of Directors of the Companies on July 21, 2003 the Companies have caused these presents to be signed by its Assistant Vice President and its corporate seals to be hereto affixed, duly attested by its Assistant Secretary. Further, pursuant to Resolution of the Board of Directors of the Companies, the Companies hereby unambiguously affirm that they are and will be bound by any mechanically applied signatures applied to this Power of Attorney. „ram �y p'rL.F.o• ��,Mc••,,,lrl, tiYQr r' °`.°p7rt5 r�i{m.�ly !.Y rw►� j 1P9•/ • 9 • - Y ♦ o - yt�PaWi� +e+,e.cYJ�„ s•simo w t0gD 1 R iTn CI '�1114. �or��..... (F -eJ° (9 7 Paul A Bergenholtz,Assistant Secretary David T,Akers,Assistant Vice President STATE OF CONNECTICUT } ss. Hartford COUNTY OF HARTFORD ))) On this 23rd day of July, 2003, before me personally came David T. Akers, to me known, who being by me duly sworn, did depose and say: that he resides in the County of Hampden, Commonwealth of Massachusetts; that he is the Assistant Vice President of the Companies, the corporations described in and which executed the above instrument; that he knows the seals of the said corporations; that the seals affixed to the said instrument are such corporate seals;that they were so affixed by authority of the Boards of Directors of said corporations and that he signed his name thereto by like authority. ,t(M. 4.• //) • Scott E.Pascka Notary Public CERTIFICATE My Commission Expires October 31,2007 I, the undersigned,Assistant Vice President of the Companies, DO HEREBY CERTIFY that the above and foregoing is a true and correct copy of the Power of Attorney executed by said Companies, which is still in full force effective as of September 17 th, 2004. Signed and sealed at the City of Hartford. ge µ t aA.ae.rA A ! �,` ?fi r ] I�+s+ii•v1�^ A�°1R"�° 1070 = ' ID70 �' �y * fy • r et i""y-��• ♦•..mow �� ,& 1979 s rrZ •4ouw,• Pw;�b' Yves Cantle,Assistant Vice President POA 2333 SEP-20-2004 MON 04:21 PM SOUND VENTURES FAX NO. 4254528422 P. 14 roo Bond/Policy Number 52BCSCZ7411 IMPORTANT NOTICE TO OBLIGEES/POLICYHOLDERS - TERRORISM RISK INSURANCE ACT OF 2002 You are hereby notified that, under the Terrorism Risk Insurance Act of 2002, effective November 26, 2002, we must make terrorism coverage available in your bond/policy. However, the actual coverage provided by your bond/policy for acts of terrorism, as is true for all coverages, is limited by the terms, conditions, exclusions, limits, other provisions of your bond/policy, any endorsements to the bond/policy and generally applicable rules of law. Any terrorism coverage provided by this bond/policy is partially reinsured by the United States of America under a formula established by Federal Law. Under this formula, the United States will pay 90% of covered terrorism losses exceeding a statutorily-established deductible paid by sureties/insurers until such time as insured losses under the program reach $100 billion. If that occurs, Congress will determine the procedures for, and the source of, any payments for losses in excess of$100 billion. The premium charge that has been established for terrorism coverage under this bond/policy is either shown on this form or elsewhere in the bond/policy. If there is no premium shown for terrorism on this form or elsewhere in the bond/policy, there is no premium for the coverage. • Terrorism premium: $0 -._.� Form B 3333-0 Pagel oft © 2002, The Hartford TECHNICAL INFORMATION REPORT (STORM DRAINAGE & EROSION CONTROL) • Maplewood Office Building NWC — South 340th Street and 1st Way South Federal Way, Washington Prepared for: Doug Klappenbaugh 7//9/y Sound Ventures, Inc. c,\L A. T.g f 320 16th Avenue N.E. Suite 100 \ of wasy, T s-- ,� 4,G,,7 Bellevue, Washington 98004 y - s rti; , . ). / i 7 � A1,O��FG/STER��\��'Q. February 12, 2004 SS/ONALENG Revised April 21 , 2004 !EXPIRES:6-23- Z t ' I Revised July 12, 2004 Our Job No. 11301 Contact: Pat Taitano, P.E. Barghausen Consulting Engineers, Inc. (425) 251 -6222 RESLIaVITIFT Jut. ) ?ofl ¢0 H A V .;. s0 CIVIL ENGINEERING, LAND PLANNING, SURVEYING, ENVIRONMENTAL SERVICES CO x 18215 72ND AVENUE SOUTH KENT,WA 98032 (425)251-6222 (425) 251-8782 FAX BRANCH OFFICES • OLYMPIA,WA • TEMECULA, CA • WALNUT CREEK, CA " i www.barghausen.com �,tra4 ► 4 9 NG ENGiN' TABLE OF CONTENTS I. Project Overview 1 II. Conditions and Requirements Summary 7 III. Offsite Analysis 16 IV. Flow Control and Water Quality Facility Analysis and Design 88 V. Conveyance System Analysis and Design 108 VI. Special Reports and Studies 112 VII. Other Permits 116 VIII. Erosion and Sedimentation Control Analysis &Design 117 IX. Additional Documents: Bond Quantities,Facility Summary and Covenants 121 X. Operations and Maintenance Manual 134 LIST OF MAPS/EXHIBITS 1. Existing Conditions Map 15 2. Vicinity Map 26 3. Upstream Basin Map 28 4. Downstream Conveyance Map 31 5. Assessor's Map 34 6. Sensitive Areas Folio Maps 74 7. FEMA FIRM 81 8. King County Soil Survey Map 85 9. Developed Conditions Basin Map 94 10. Storm Filter Detail 106 11. Conveyance Basin Map 110 12. W.Q. Facility Sketch 129 11301.002.doc I. PROJECT OVERVIEW 1 PROJECT OVERVIEW Existing Conditions The Maplewood Office Building project is located at the northern corner of the intersection of South 340th Street and 1st Way South in Federal Way, Washington. The 2.53-acre site has been cleared and graded under a previous permit. In addition to the clearing and grading, an approximately 20,000-square-foot concrete building slab was constructed. The site is very flat around the existing building slab and, in general, slopes from the north corner to the south corner at slopes ranging from 1 to 5 percent. The site drops off quickly at approximately 3:1 slopes toward South 340th Street and 1st Way South at the project property lines. The remainder of the site is covered mainly in grasses and small brush. Drainage from most of the site is collected in a storm drainage system containing three catch basins and a 12-inch storm drainage conveyance pipe that conveys runoff to a catch basin located in the south corner of the site. From here, the drainage is conveyed into the 15-inch storm drainage system located in South 340th Street. This existing storm drainage system will be removed and replaced by a new tightline conveyance system redesigned to fit the proposed site plan. Developed Conditions Storm drainage will generally sheetflow from west to east across the parking lot and be collected in a series of new catch basins and a tightline conveyance system that will convey the runoff to a biofiltration swale located along the southern property line of the site. The bioswale will treat the parking lot and rooftop runoff for water quality and convey it to the existing catch basin and conveyance system in South 340th Street. 2 King County Department of Development and Environmental Services TECHNICAL INFORMATION REPORT (TIR) WORKSHEET Part 1 PROJECT OWNER AND PROJECT ENGINEER Part 2 PROJECT LOCATION AND DESCRIPTION Project Owner Sound Ventures Inc. Project Name Address 320- 106th Avenue N.E., Suite 100 Maplewood Office Building Bellevue,WA 98004 Location Phone (206)223-9500 Township 21N Project Engineer Pat Taitano Range 4E Company Barghausen Consulting Engineers, Inc. Section 20 Address/Phone 18215—72nd Avenue South Site Area 2.53 acres Kent, WA 98032/(425)251-6222 Part 3 TYPE OF PERMIT APPLICATION Part 4 OTHER REVIEWS AND PERMITS ❑ Subdivision HPA El DFW HPA ❑ Short Subdivision CI Shoreline Management 0 COE 404 ❑ Rockery ❑ Grading 0 DOE Dam Safety ® Structural Vaults CO Commercial ❑ FEMA Floodplain 0 Other ❑ Other ❑ COE Wetlands Part 5 SITE COMMUNITY AND DRAINAGE BASIN Community Drainage Basin Part 6 SITE CHARACTERISTICS ❑ River ❑ Floodplain ❑ Stream 0 Wetlands ❑ Critical Stream Reach 0 Seeps/Springs ❑ Depressions/Swales ❑ High Groundwater Table ❑ Lake ❑ Groundwater Recharge ❑ Steep Slopes ❑ Other 2/17/04 3 11301.001.doc[PAT/dmj Part 7 SOILS Soil Type Slopes Erosion Potential Erosive Velocities EWC 0-5 percent Low Low ❑ Additional Sheets Attached Parts DEVELOPMENT LIMITATIONS REFERENCE LIMITATION/SITE CONSTRAINT El 0 El ❑ Additional Sheets Attached Part 9 ESC REQUIREMENTS MINIMUM ESC REQUIREMENTS MINIMUM ESC REQUIREMENTS DURING CONSTRUCTION AFTER CONSTRUCTION N Sedimentation Facilities ® Stabilize Exposed Surface ® Stabilized Construction Entrance ® Remove and Restore Temporary ESC Facilities ® Perimeter Runoff Control ® Clean and Remove All Silt and Debris ❑ Clearing and Grading Restrictions ® Ensure Operation of Permanent Facilities ® Cover Practices 0 Flag Limits of SAO and Open Space Preservation Areas ® Construction Sequence 0 Other ❑ Other Part 10 SURFACE WATER SYSTEM ® Grass Lined Channel 0 Tank 0 Infiltration Method of Analysis N Pipe System ® Vault 0 Depression SBUH ❑ Open Channel 0 Energy Dissipater 0 Flow Dispersal Compensation/Mitigation ❑ Dry Pond 0 Wetland 0 Waiver of Eliminated Site Storage ❑ Wet Pond 0 Stream ® Regional Detention N/A Brief Description of System Operation Collection of on-site runoff. Treatment in biofiltration swales and stormfilter vault and release. Facility Related Site Limitations Reference Facility Limitation 2/17/04 4 11301.001.doc[PAT/dm] Part 11 STRUCTURAL ANALYSIS Part 12'EASEMENTS/TRACTS ® Cast in Place Vault ❑ Drainage Easement ❑ Retaining Wall ❑ Access Easement ❑ Rockery>4'High 0 Native Growth Protection Easement ❑ Structural on Steep Slope 0 Tract O Other 0 Other Part 13 SIGNATURE OF PROFESSIONAL ENGINEER I,or a civil engineer under my supervision,have visited the site. Actual site conditions as observed were incorporated into this worksheet and th chment To th best of my knowledge the in ormation provided here is accurate. . ,4? --- - 7 /f/oei Si ned/Dated 2/17/04 5 11301.001.doc[PAT/dm] _.... 1 I I T' ,", .,.-'fi- '„ , . .„,la.61•t n:"''' Mat-0011 4,:,,.:cr.'QPIA t .0.,714e8Mpl' „. i,r.c: . - _ . - - 1: 5"3rt'241-'06`' Fo i -45.11! 1 s097'-77:47,31rpi 4 . 304 ST y . 4 ; 1 _ Jo a Rig?1900 .. ..6 ....t SI 'I 1 SW —-3orni . '0 dAliiii IN lisiull .4.7,' - tin ,— g 4 <s' .21111-MqnlImic .olicre:yas-frg ' , 1.4. ., _0 v&L,.. yors, SY 30910 .1,i'; .c,,,,,,,70.1 eiri• Ira III _cm, .h -,,, ' 1 12 i 4:* 1104i 310TH -.4,, P'' la en mow 7cw. 1, , 1--1 : ' 31'TH gra 4 1--SAK. ST :s '4 r . i si,DM • se .es,' I 1 a ... .317n4 Pt , • .11----Fr vE . ,t, • 4, sli 318111 ST rk s.,'4 a 014. r t' `,2,-sw '.. - Fs ruimiargaR i„:,,, .., 4 1 " - At IP -Z - 4,,,, 347444 - 1 -„,wigi 42W . ir 1 i 3100 PS 1,11i ' k e,- sy- ,.., . S 320111 ST 4 , zwo @ moo,4 - . 4 ,,.4,, , thV"... a'?9°, 4'.,.._",‘,••c tic 1" Ice - F :0,i Z S▪17322140 sr ;DF7 t zne 4 e- - -4 t . : , 3..„ • ,, ... ' , . , )-,1,,.. s' 4 ,, .. , . _ .• 1. , ,, _ dry. M 4,,,,,s. SW 32fi 13111:..,:iigkilpr_.P00 A 111Mr. 18 Oro e 4 v -c tiwc, 4 " . , 4, ?Ml% ' .; 41k. ,";:° *`"" Infitir 3.b.s Orr •P * Ft14 IV. ' 4pp 'Irr 4 STA1/44011k • V ..4 2 el 2v a---- . ..• , . - _....33isT,,, - 4 I ' e • Li .....,4 — ck ' , .. km...i... ..._ II _ , „ ....- - ,itAltit 4 '-' iii:t' • s • sun.sr Lsr, AP F S ,C.:13. , G ---'t d41- i A SW 336TH I I Sr -',;+,, TO :, . ,tSt,, i t‘' 'll •-• PO 1 i I ativ£ .1, SI _I Pt Sw ill01 PS, I, PAU -%, ' • Kt,sl' • I. ' SW 3.11a1k3l`r i.p, nava) 1 1 rt.illijititt :-''-'JR us sumac ` --tr-it,' su 1ST IST 19 4 i - - 4-:''->il Weridill.' g , • ri.24 .`" " - 1 % ds-;.:?1,` ,:2-4 344 I fr 0 I D1 gSAImr minas . . ..... . • HOSPITAL I . Di 346T11 ST 1100 SI rrt r..R ,. n....4 -=' ••• o 6 - . 0 4 50 -a a.,..ti , 7' ,I.341111 Sr 34,4 I,A,,,..71)4 g; ,4,... ,-, , 347Th ..,c st, .... .7.: z. XSY 340111 , v. ' 91 348111 CT ..., s .348Tha . e t 1 im---;------s= 1 SITE LOCATION MAP 7 1 1" = 2400' i • I Reference: The Thomas Guide, King/Pierce/Snohomish Counties, 1997 Edition N ir i 6 II. CONDITIONS AND REQUIREMENTS SUMMARY 7 Preliminary Conditions Summary This project site had originally obtained building and site development permits issued through King County. The construction of the building slab and storm drainage system was completed. Upon meeting with City of Federal Way Public Works officials, it was agreed upon that detention was not required for the completion and redevelopment of the project site. The developer will be required to pay a fee in lieu of on-site detention in the amount of approximately$1,728 per acre of impervious area toward the City's Panther Lake regional drainage system. Water quality treatment based on the 1998 King County, Washington Surface Water Design Manual resource stream protection menu requirements will apply to this project site. A biofiltration swale in combination with a stormfilter vault are proposed to meet the runoff treatment requirement. 8 SOIL SURVEY King County Area . •, Washington - 1 r• ?•i I L ENGP.S, • UNITED STATES DEPARTMENT OF AGRICULTURE Soil Conservation Service in cooperation with WASHINGTON AGRICULTURAL EXPERIMUIT STATION Issued November 1973 - i 1 f\`-) IA J il° sch ii-:. 299 )- ' ''‘ '--.`, . ; '' :: • • • •• ---- - - -• \-!I:t' I Z'''Z':•:.:/E '''.% ,:`.•' +a- I .,_ • • -----. t$ '• ' ' > .......... :i• 7 . ... ' ' . ; . _ii,:• ...S..'- ..:".. , — . AgB 1 • :,`: "-----4. • ':iiii;•. : •-•••••• -.-. • I .•: ' ' • ' "'" ' i I •• AMIE% '.* Si; , ,. . , / •, I: • :•,..) \ I c.y.,sk u ....4 SI)11.. 1.4... :-.,... , ,;"., :: i• .j 11 '''''.--"' - Arn B •rki.' - 3 i ' i ' -- - ' k ? -' 1 110:61-- de, 7,-SP4r/ i . a. , ___,--,-- ,--.- i t --- u• 7-----:-,... `'4'-7-'--7. "'-',-- -'f.--:-;.,,-,, -,--._ ,-;.. 2 ,---/ ' ,..) i p-6Y, •r-'-' . ' •,r : ' --''' ,'•': 7 -'•i-,_.,-,,-413 . !..:-..,,v.i, / .Lb g i P':.*i i Ska _ -1,, _. '''-I ': I.-- -_it - --,,---- ,.-,‘ , •-1 k 9,2, ' • .;-,,,,,,O71,.- ,„.. , .,_,,i.,No.-....' 6.-.--.7- -r .------ 'A----12!ift3-4,,ifSi>"•-.,11&># 1,f.;' u 1 ' I- -' ': , ^' • :I) ''- -' - 7'1`'.7-vti,' ' " •Pl-c-j• IAgB • •'-' n :.,.) ,1-. -' . (.' ,,io,,„•4/ •-,:r -,..: .`• • , 18 i fr -1 • ' - :-,-- i..-5, --- • -_- ------- ,..t.- , rir I -...•.-",- .., Airport,.;', o s",;•. . — ...._/ .,#!:".'- ,•., ,'• ' - .'. 4,' 4...,.,. •., ABB CaSk / to! ..,..,,e;-."_,' ,..,,. if,„=•4*, i gig? . i EwC I er------ — qk • t . -..-'-'' u u •: . 21• ,. ,- -- i ------ •,.,\ ,:: ---______________________LIIIIII V I 1 c: ,- . r. EvC ..!---, 1 I I 6.••hi AgD 4..-",,----- , I . ( 1 • - I A 1,--`- CZc P. , . eZzErt--....• -,_ -ATI ' , - — - I . I • - - ) , al Kit f orner. . _ • - a--* _ 4) # . . ,, 1 _ ,,, , . „„„ , 4,, .. ,, _ E-----, u- . .. , -, .... - _, , 1 ..-„,..-, ibe - licyll I . ., I .,„,„-a_-....- - cvB , 1 f " 1• V- Pant er 0 • , .4—Cli- —:7,-'— ff 352 ) I ..e.,.:... \N I Soh ill ir ,- t EwC - r 1 - Cli' II II g 'I . Sm 6% Lir ,h I VI : AgC S 2581 inne'L.. III1 . ' ' AgD 13r°° a , 1/4/1 citilW, .N 07011 ( ' I ' .. .... . :".... : AmC on-1--- — ---6 - lb . / ir 1 „ • Ag o libi Sk . (f EvD •n• Ook P : • • ,' U Ldke 144 I • - EvC f • if ; . n • . . • • • . . •--- II . 4 EvB . '• 'AgC • ; •,. - 1 • • . . - EvC \ ! P) • ,: .. . : ; ft , ': a • / ' • 1 -0_ - v • i KING COUNTY SOIL SURVEY MAP to GUIDE TO MAPPING UNITS For a full description of a mapping unit, read both the description of the mapping unit and that of the soil series to which the mapping unit belongs. See table 6, page 70, for descriptions of woodland groups. Other r` information is given in tables as follows: f l Acreage and extent, table 1, page 9. Town and country planning, table 4, page 57. Engineering uses of the soils, tables 2 and 3, Recreational uses, table 5, page 64. pages 36 through 55. Estimated yields, table 7 Y page 79. s Woodland Described Capability unit group 3 1 Map on i symbol Mapping unit PP g page Symbol Page Symbol AgB Alderwood gravelly sandy loam, 0 to 6 percent slopes 10 IVe-2 76 3d2 AgC Alderwood gravelly sandy loam, 6 to 15 percent slopes 8 IVe-2 76 3d1 1 AgD Alderwood gravelly sandy loam, 15 to 30 percent slopes 10 VIe-2 78 3d1 1 AkF Alderwood and Kitsap soils, very steep 10 VIIe-1 78 2d1 AmB Arents, Alderwood material, 0 to 6 percent slopes 1/ 10 IVe-2 76 3d2 AmC Arents, Alden+ood material, 6 to 15 percent slopes 1/ 10 IVe-2 76 3d2 An Arents, Everett material 1/ 11 IVs-1 77 3f3 a BeC Beausite gravelly sandy loam, 6 to 15 percent slopes 11 IVe-2 76 3d2 BeD Beausite gravelly sandy loam, 15 to 30 percent slopes 12 VIe-2 78 3d1 BeF Beausite gravelly sandy loam, 40 to 75 percent slopes 12 VIIe-1 78 3dl Bh Bellingham silt loam I2 IIIw-2 76 3w2 Br Briscot silt loam 13 IIw-2 75 3w1 Bu Buckley silt loam 13 IIIw-2 76 4w1 (b Coastal beaches 14 VIIIw-1 78 Ea Earlmont silt loam 14 IIw-2 75 3w2 Ed Edgewick fine sandy loam 15 IIIw-I 75 2o1 EvB Everett gravelly sandy loam, 0 to 5 percent slopes I5 IVs-1 77 3f3 EvC Everett gravelly sandy loam, 5 to 15 percent slopes 16 VIs-1 78 3f3 EvD Everett gravelly sandy loam, 15 to 30 percent slopes 16 VIe-1 77 3f2 —3 EwC Everett-Alderwood gravelly sandy loamy, 6 to 15 percent slopes 16 VIs-1 78 3f3 InA Indianola loamy fine sand, 0 to 4 percent slopes 17 IVs-2 77 4s3 Q InC Indianola loamy fine sand, 4 to 15 percent slopes 16 IVs-2 77 4s3 InD Indianola loamy fine sand, 15 to 30 percent slopes 17 VIe-1 76 4s2 KpB Kitsap silt loam, 2 to 8 percent slopes 17 IIIe-1 75 2d2 KpC Kitsap silt loam, 8 to 15 percent slopes 18 IVe-1 76 ?d2 KpD Kitsap silt loam, 15 to 30 percent slopes 18 VIe-2 78 2d1 KsC Klaus gravelly loamy sand, 6 to 15 percent slopes 18 VIs-1 78 3f1 Ma Mixed alluvial land --- 18 VIw-2 78 201 NeC Neilton very gravelly loamy sand, 2 to 15 percent slopes 19 VIs-1 78 3f3 Ng Newberg silt loam-- 19 IIw-1 74 2o1 Nk Nooksack silt loam 20 IIw-1 74 2o1 No Norma sandy loam 20 IIIw-3 76 3w2 Or Orcas peat - 21 VIIIw-1 78 Os Oridia silt loam 21 IIw-2 75 341 OvC Ovall gravelly loam, 0 to 15 percent slopes 22 IVe-2 76 3d1 OvD Ovall gravelly loam, 15 to 25 percent slopes 23 VIe-2 78 3d1 OvF Ovall gravelly loam, 40 to 75 percent slopes 23 VIIe-1 78 3d1 Pc Pilchuck loamy fine sand 23 VIw-1 78 2s1 Pk Pilchuck fine sandy Ioam 23 IVw-I 76 2s1 Pu Puget silty clay loam 24 IIIw-2 76 3w2 Py Puyallup fine sandy loam 24 IIw-I 74 201 RaC Ragnar fine sandy loam, 6 to 15 percent slopes- 25 IVe-3 77 4s1 RaD Ragnar fine sandy loam, 15 to 25 percent slopes 26 VIe-2 78 4s1 RdC Ragnar-Indianola association, sloping: 1/ 26 Ragnar soil IVe-3 77 4s1 Indianola soil - IVs-2 77 4s3 RdE Ragnar-Indianola association, moderately steep: 1/ 26 Ragnar soil - VIe-2 78 4s1 Indianola soil - VIe-I 77 4s2 U.S.GOVERNMENT PRINTING OFFICE:2973 0-469- it - . F-] GUIDE TO MAPPING UNITS--Continued Woodland Map Described Capability unit group s mbol on Y Mapping unit page Symbol Page Symbol p..- Re Renton silt loam 26 IIIw-1 Rh Riverwash 75 3w1 27 VIllw-1 78 Sa Salal silt loam 27 IIw-I Sh Sammamish silt loam 74 3w1 Sk Seattle muck 27 IIw-2 75 I Sm Shalcar muck 28 IIw-3 75 -__ Sn Si silt loam 29 I29 Ilw-3 75 1IN-1 74 2o1 So Snohomish silt loam- 30 IIw-2 Sr Snohomish silt loam, thick surface variant 75 3w2 * ] Su Sultan silt loam 31 IIw-2 75 3w2 Tu Tukwila muck 31 IIw-1 74 3w1 Ur Urban land 32 IIw-3 75 --- Wo Woodinville silt loam 33 -- --- 33 IIw-2 75 3w2 1/ The composition of these units is more variable than that of the others in the Area, but it has been controlled well enough to interpret for the expected use of the soils. i - I t s • ti 1 7 KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL (2) CN values can be area weighted when they apply to pervious areas of similar CN's (within 20/ CN points). However, high CN areas should not be combined with low CN areas (unless the low CN areas are less than 15% of the subbasin)_ In this case, separate hydrographs should be k i generated and summed to form one hydrograph. __i FIGURE 3.5.2A HYDROLOGIC SOIL R G OUP OF THE SOILS IN KING COLRsiTY ,! - i I _-i HYDROLOGIC HYDROLOGIC SOIL GROUP GROUP' SOIL GROUP GROUP' Alderwood C Orcas Peat Arents, Alderwood Material C D O Arents, Everett Material v CD B Oval! all C t Beausite C Pilchuck Bellingham D Puget D Briscot D Buckley Puyallup B B Coastal Beaches D Ragnar Variable Renton B Earfmont Silt Loam D D Riverwash Edgewick C Salaf Variable I ' Everett / A B 'Sammamish C Indianola f A Seattle D Kitsap C Shacar D Klaus C D I Mixed Alluvial Land Si Silt C Neilton Variable A Snohomish D Newberg Sultan: C 4 B Tukwila D t Nooksack C Urban 1 Normal Sandy Loam D Variable Woodinville D . HYDROLOGIC SOIL GROUP CLASSIFICATIONS A_ (Low runoff potential). Soils having high infiltration rates, even when thoroughly wetted,and consisting chiefly of deep,well-to-excessively drained sands or gravels. These soils have a high rate of water I transmission. t B. (Moderately low runoff potential). Soils having moderate infiltration rates when thoroughly wetted, and j consisting chiefly of moderately fine to moderately coarse textures. These soils have a moderate rate of water transmission. C. (Moderately high runoff potential). Soils having slow infiltration rates when thoroughly wetted,and I.. r consisting chiefly of soils with a layer that impedes downward movement of water, or soil with moderately 1 fine to fine textures. These soils have a slow rate of water transmission. D. (High runoff potential). Soils having very slow infiltration rates when thoroughly wetted and consisting z chiefly of clay soils with a high swelling { • 9 potential,soils with a permanent high water table,soils with a hardpan or clay layer at or near the surface, and shallow soils over nearly impervious material. These soils have revery slow rate of water transmission. From SCS, TR-55, Second Edition, June 1986, Exhibit A-1. Revisions made from SCS. Soil interpretation Record, Form #5, September 1988. . • GD 3.5.2-2 12/92 } - SCS WESTERN WASHINGTON RUNOFF CURVE NUMBERS {rT ) • e_g fI SCS WESTERN WASHINGTON RUNOFF CURVE NUMBERS (Published by SCS in 1982) . Runoffrainfall curve distribution, 2 numbers4-hour for selectedstormduration_ agricultural, suburban and urban land.use for Type to t CURVE NUMBERS BY -I LAND USE DESCRIPTION HYDROLOGIC SOILGROUP # AB CD Cultivated land(1): winter condition 86 91 94 95 t Mountain open areas: low growing brush and grasslands 74 3 82 89 92 ( Meadow or pasture: 65 78 es 89 , Wood or forest land: undisturbed or older second growth 42 64 76 Wood or forest land: 81 Orchard: young second growth or brush 55 72 81 86 with cover crop 81 88 ' 92 94 ." t Open spaces,lawns, parks. golf courses, cemeteries, landscaping. good condition: grass cover on 75% or more of the area 68 80 66 90 fair.condition: grass cover on 50% to 75% of the area 77 85 0 92 Gravel roads and parking lots Dirt roads and parking lots 72 62 76 82 897 91 87 89 Impervious surfaces, pavement, roofs, etc. _ . Open water bodies: Takes, wetlands, 98 93 clponds, etc- 100 100 198 1000 Single Family Residential (2) Dwelling Unit/Gross Acre %Impervious (3) 1.0 DU/GA 15 Separate curve number 1.5 DU/GA 20 shall be selected 2.0 DU/GA 25 for pervious and 25 DU/GA 3.0 DU/GA 3034 impervious portion 3.5 DU/GA of the site or basin 38 4.0 DU/GA 42 4.5 DU/GA 46 5.0 DU/GA 48 5.5 DU/GA 50 6.0 DU/GA 52 6.5 DU/GA 54 7.0 DU/GA 56 Planned unit developments, k impervious condominiums, apartments, must be computed commerdial business and industrial areas_ (1) For a more detailed description of agricultural land use curve numbers refer to National Encineering Handbook, Section 4, Hydrology, Chapter 9. August 1972. (2) Assumes root and driveway runoff is directed into street/storm system. (3) The remaining pervious areas-(lawn) are considered to be in good condition for these curve umbers _> SCS CURVE NUMBER TABLE j 4 i .....---------- . 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NOE.80111200.5E rr � 0p n� —®.._,_ 1ST WAY SOUTH & D91oo3aoo iref,e x 2o00 5 1iz- L - 594.35' R = 1200 00' p 2g 22 41' L 94 35 •-'- 1 Ea.,2ooco� ��zx�s Ta l�o /`'= S Q N~_ , 0- 2872'42' a 1 ) I r_-- III. OFF-SITE ANALYSIS 16 I r T i f4# xs.» • '"1. ✓< r,€' a -.„-:7,-2iE-.4,1.,,l,4,4,,'',-:ld:-f-A*-g4,,vM,i1;,, -,y,,-,4-,.4,,e.,k,lg,-:- Y QZ 9 "k. i e, rye, d k▪ '„.4 te4. fi. -44 r 'Pa," rc� ` / `tea ',., x a 3'-' , 4o- f, yV� € • h- F � 6 r a { k p <zf�� fir,' x max' 2" �' 0 ",a -, , R a s�N'„:s,` ,*.�- ram'"+a , ' ,,,„ ''iy' g • z e �j� 1°, " ,�'ggr °'"'cur' '` ✓'' '°'�' ,w rsr' x,Pf � `� ,e �Ji ar 8 a c F ' F OUR JOB NO. 6747 `'' JUNE 8, 1998 I. REVISED AUGUST 21, 1998 \14- 11140 Prepared By: i.a A. < 1, �� . BARGHAUSEN CONSULTING ENGINEERS, INC. I l 0lVg1. Zc) 18215 72ND AVENUE SOUTH A 214 t KENT, WASHINGTON 98032 •�FstS, ' E '/ (425) 251 -6222 �(Z�� I EXPIRES 4/3/00 I "4, CIVIL ENGINEERING, LAND PLANNING, SURVEYING, ENVIRONMENTAL SERVICES h' 4,, EHG., 17 TABLE OF CONTENTS 1.0 GENERAL INFORMATION 2.0 UPSTREAM DRAINAGE ANALYSIS 1 1 3.0 ON-SITE DRAINAGE ANALYSIS 4.0 DOWNSTREAM DRAINAGE SYSTEM'S DESCRIPTION OF PROBLEM SCREENING 5.0 RESOURCE REVIEW A. BASIN RECONNAISSANCE SUMMARY REPORT RI B. CRITICAL DRAINAGE AREA MAPS C. FLOODPLAIN FLOODWAY FEMA MAPS 1 D. OTHER OFF-SITE ANALYSIS REPORTS E. SENSITIVE AREAS FOLIOS F. SWM DIVISION, DRAINAGE INVESTIGATION SECTION PROBLEM MAPS I 6.0 U.S. DEPARTMENT OF AGRICULTURE SOILS SURVEY 7.0 WETLAND INVENTORY MAPS 8.0 REVIEW OF CORE AND SPECIAL REQUIREMENTS 9.0 CONCLUSION APPENDIX Exhibit A Vicinity Map Exhibit B Drainage Area Maps Exhibit C Off-Site Analysis Drainage System Table Exhibit D Assessor's Map Exhibit E Basin Report Exhibit F Sensitive Areas Folio Exhibit G FEMA Map Exhibit H Drainage Complaints Exhibit I King County Soil Survey 13 1.0 GENERAL INFORMATION The following report is based on field observation performed on June 4, 1998. The proposed site is approximately 2.53 acres in size and is located in the Northwest quarter of Section 20, Township 21 North, Range 4 East, Willamette Meridian, Federal Way, King County, Washington. Based on a more localized description, the property is in the northwest corner of the intersection of South 340th Street and 1st Way South in Federal Way. The site is currently partially developed with an existing building slab and utilities stubbed to the site. The surrounding ground has been graded, filled, and compacted, and consists chiefly of grass. Since the site has been filled and graded, it is essentially flat. The site generally lies approximately 5 feet above the adjacent streets. Slopes up to 2H:1V are present extending from the southeast corner of the site. 2.0 UPSTREAM DRAINAGE ANALYSIS An area approximately 300 feet long due west of the subject property consists of trees and thick under story which drains onto the project site. There is also an apartment complex to the west adjoining this area, and the backside of the building lots drain onto the treed area which ultimately sheetflows onto the subject site. It is anticipated that this drainage is relatively minor, since it flows through the treed areas. There is also a catch basin located at the west property line of the site, which collects a nearly negligible amount of runoff from this area. 3.0 ON-SITE DRAINAGE ANALYSIS Existing conditions dictate the runoff is either collected and conveyed off site via an existing catch basin and pipe conveyance system which will be abandoned for the purpose of the development of this site, or else sheetflows off the site in either an easterly or southerly direction into the right-of-way of South 340th Street or 1st Way South where it is conveyed into a pipe conveyance system and conveyed downstream. The topographic survey indicates a very small portion of the northeast corner of the site presently appears to drain to 1st Way South. Since most of the small area has been routed to this on-site storm drainage system and is ultimately released to the south on South 340th Street, a comparable area from the northwest corner of the site has been rerouted to 1st Way South. 4.0 DOWNSTREAM DRAINAGE SYSTEM DESCRIPTION AND PROBLEM SCREENING For a more detailed description of the following downstream analysis, please consult the Off-Site Analysis Drainage System Table in Exhibit C and the Drainage Area Map in Exhibit B. Runoff currently sheetflows off the site and ultimately enters a pipe conveyance system located in 1st Way South at the intersection of South 340th Street where it is conveyed in a southerly direction through various pipes sized to handle the flow from this basin. The initial pipe size is 15 inches, and once the runoff reaches a quarter mile downstream, it is in a 30-inch CMP pipe system. Ultimately,runoff from this site reaches West Hylebos Creek. The drainage area to the system downstream to the north of 1st Way South will not be changed as a result of this project. 19 11301.004.doc 5.0 RESOURCE REVIEW The following is a description of each of the resources reviewed in preparation of this Level 1 Downstream Analysis. A. BASIN RECONNAISSANCE SUMMARY REPORT This site is included in the Hylebos Creek subbasin and is within the Puget Sound drainage basin. A Basin Reconnaissance Summary Map can be found in Exhibit E, along with portions of the Hylebos Creek Basin Plan. B. CRITICAL DRAINAGE AREA MAPS The site is located within the tributary area of West Hylebos Creek, a portion of the Hylebos Creek drainage subbasin,and the lower Puget Sound drainage basin. C. FLOODPLAIN AND FLOODWAY FEMA MAPS The site is not located in an area that contains a FEMA floodway or floodplain map. It appears that this site is not threatened by any flooding problems. D. OTHER OFF-SITE ANALYSIS REPORTS A review of the basin study area maps and site investigation were conducted for analysis in preparation of this Level 1 Drainage Report. E. SENSITIVE AREAS FOLIOS Each of the sensitive area folios associated with the site was reviewed. After review, it was found that the subject project incorporates no sensitive areas. F. SWM DIVISION DRAINAGE INVESTIGATION SECTION PROBLEM MAPS At the printing of this document, section problem maps were not available to us. 6.0 U.S.DEPARTMENT OF AGRICULTURE SOILS SURVEY The U.S. Department of Agriculture Soils Survey for King County has been incorporated in this report and can be found in Exhibit I. 7.0 WETLAND INVENTORY MAPS Wetland inventory maps were reviewed for this project. No wetlands were found in close proximity to the project site. 8.0 REVIEW OF CORE AND SPECIAL REQUIREMENTS There are seven core requirements, which are listed as follows, with our responses to each requirement: 20 11301.004.doc 1. Discharge at the natural location Response: The discharge from the site will occur at the natural location. A portion of the site is conveyed in a tightline system and the remainder sheetflows to the southeast corner of the site. Site drainage is combined at an existing catch basin on the north side of South 340th Street, west of the intersection of 1st Way South. 2. Off-site analysis Response: This Level 1 Drainage Analysis completes the off-site analysis requirement of this project. 3. Runoff control Response: The site has been graded and compacted under a previous permit, which did not require detention. 1/4 mile downstream is sufficient to convey the additional stormwater from this development according to the City of Federal Way Comprehensive Surface Water Facility Plan. In lieu of on-site storm drainage detention, the developer will pay a fee in the amount of$4,372 toward the City's Panther Lake drainage system. The fee formula, as stated in the City's memorandum from Kim Scattarella dated May 11, 2004, is $1,728/acre, in lieu of on-site detention storage. The site area is approximately 2.53 acres and the calculated drainage fee amount is$4,372. 4. Conveyance system Response: A conveyance system shall be analyzed, designed and constructed for existing tributary off-site runoff and developed on-site runoff from the proposed project. Roof drainage will be collected in the tightline system used for pavement runoff. In lieu of upsizing the downstream conveyance system, the developer will pay a fee in the amount of $13,352 towards the City's conveyance improvement project. The City's total project cost for the conveyance improvements is $670,255. The total basin is approximately 127 acres. The pro-rated share of the conveyance improvement project is: 2.53 acres/ 127 acres x $670,255 =$13,352. 5. Temporary erosion and sedimentation control Response: This project will incorporate a temporary erosion and sedimentation control plan and measures to minimize the transport of sediment to drainage facilities, water resources and adjacent properties. 6. Maintenance and operation Response: This project will incorporate a maintenance and operation plan, which will be the responsibility of the property owner. 7. Bonds and liability Response: All drainage facilities for this project will be constructed in conformance with the bond and liability requirements of King County Code 9.04.100. 21 11301.004.doc There are 12 special requirements, and our responses to them are as follows: (1) Critical drainage areas Response: This project is in the Hylebos Creek drainage area, which is considered a critical drainage area,and the requirements of that Master Drainage Plan will be complied with. (2) Compliance with an existing Master Drainage Plan Response: The plans and storm drainage/detention calculations will be in compliance with the Hylebos Creek Master Drainage Plan. (3) Conditions requiring a Master Drainage Plan Response: Not applicable. (4) Adopted Basin or Community Plans Response: This project is in the Hylebos Creek drainage basin and the basin plan will be complied with. (5) Special water quality controls Response: This project proposes to incorporate a bioswale and stormfilter vault in its design. The new impervious surface area subject to vehicular traffic is approximately 1.36 acres. (6) Coalescing plate oil/water separators Response: No oil/water separator is required because the new impervious area does not exceed 5 acres. (7) Closed depressions Response: Not applicable. (8) Use of lakes, wetlands, or closed depressions for runoff control Response: Not applicable. Please refer to Exhibit F of this report. (9) Delineation of the 100-year floodplain Response: Not applicable. Please refer to Exhibit F of this report (10)Flood protection facilities for Type 1 and Type 2 streams Response: Not applicable. (11)Geotechnical Analysis and Report 22 11301.004.doc Response: A copy of the Geotechnical Report, dated June 21, 1989, by Earth Consultants, Inc., is located in Section VI of this report. A Soils Analysis was completed for possible infiltration by Earth Consultants,Inc. Please refer to Section VI of this report. (12)Soils Analysis and Report Response: This site has been graded and filled, based on recommendations provided in the June 21, 1989,geotechnical report by Earth Consultants,Inc. They are currently updating the report for the remaining portion of the requirements. 9.0 CONCLUSION In lieu of on-site storm drainage detention, the developer will pay a fee in the amount of$4,372 toward the City's Panther Lake drainage system. In lieu of upsizing the downstream conveyance system, the developer will pay a fee in the amount of $13,352 toward the City's conveyance improvement project. However, water quality treatment based on the 1998 King County, Washington Surface Water Design Manual's (KCSWDM's) stream protection requirements will apply to this project. 23 11301.004.doc ,i 1 ( ..) 1 1 ,1 1'--,- , „ 1 , APPENDIX - 1 I 1 i ' 1 1 1 ' 1 - 1 - f 2 14 , 1 I 1 f p - EXHIBIT A f VICINITY MAP 25 E•1 i i t I .vl. - w m A., K y P vs. 1 W • yk' I t i fJ°. . �t .., N 4� `mot .ftil1900 a >�TM n 't _ Aim.a ?• ®®l s 1 • 44 + _ raiRkiiti '4� 'c'.>- n 91- -n ft�''f�11421� i.®®Fwy itlil n.1� 1 4 22 A _-0 * f Nig SW> E N, ,_ ? ®s® E , . ii,..--s. PA ,4 4 3 3T I�h� !•ik eev> a , _e � fi if SI t((i 7 ` 9+ -A1 316TH SW' 31 �.. 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ROLL MAP # 736W r- t � -:•-2. .-.- . -- '.' •--..,',r''-'1?..*1-':-.1 - ,;:r.t•i's- •:„.4.4-4 i I i - , ":-'i.4,'',":1.:_•,;!...z:A.."; 1,,--, --f02: "„.."....54.. 2'on -_., / .,_,,":-. I—, ;1, ; \ \ " -_____________--_-,..„.....-";7-__-_----- -,1-..."--...„„---\"„„,„„-...",„„„--„,„„"--.., ..„.,„,..." k ,__ —3;7 - • t --/ - • ...._,_... D "i \.,,y__,\ \ ---'—/--- -J___,_________ripri,-__if --____st_C_____--,j-- _ _,„__,„_,_, J ,:\,\‘‘,,)., _ : iv„ , ; ( :•. ,.:41,..„..le.,-.4,.0-.6...klai.:.I I-- ) \17:ieti?.1 VH07T0035 .,-.. • • .. rics111D ..-.."--=--...1--- a .4:,-;.; --;•.274, ________ > .' 'N. ) ‘. 7"-L" ' "'11 ."-11:".; ......\"""f"7.,- -2(4":1-11'" rj:1) "\\;1sii: '‘\\\ \ :\\.,1\\"\''.11..t's‘1 : 1 ' 'y--\--1 1. "''s \ \\)\ ° ‘. .,____. \04,...._.p,_._ "."_. v,, j,"" fic_______J4--- _,,-----i-.."‘,„."-,"-. ' ‘•• "."\ - - . . . - • . . .4,.. \\ \ - PLICAT SWIM Ti-Nin ... 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'9eso�, T�a,tam/v 3�r>ol,�,�oo�o a�� f, — T 1 I 7 I EXHIBIT E ) BASIN REPORT P A i 11 i a t 1 11 RECONNAISSANCE REPORT NO. 3 J HYLEBOS CREEK BASIN I, I I rt a I } c FEBRUARY 1986 1 a A } i Natural Resources and Parks Division and Surface Water Management Division King County, Washington 36 I 1 II I TABLE OF CONTENTS n1 111 f 4 I I. SUMMARY 1 t IL INTRODUCTION 1 III. FINDINGS IN HYLEBOS CREEK BASIN 2 A. Overview 2 fa B. Effects of Urbanization 4 K a C. Specific Problems 4 ` i 1. Wetland and stream destruction 4 2 Erosion and downcutting 4 3. Slides and slumps 5 } i i 4. Observable pollutant discharges 5 f IV. RECOMMENDATIONS 5 A. Inform appropriate agencies of findings 5 t j B. Reevaluate specific policy regarding surface water management S e C. Maintain or enhance the instream and riparian habitats 6 D. Prepare a comprehensive basin plan 7 Ea E. Construct capital improvement projects 7 t V. MAP 9 APPENDICES: APPENDIX A: Estimated Costs A-1 APPENDIX B: Capital Improvement Project Ranking $-1 Qi APPENDIX C: Detailed Findings and Recommendations C-12 37 A King County Executive Tim Hill King County Council J Audrey Gruver, District 1 Cynthia Sullivan. District 2 Bill Reams, District 3 Lois North, District 4 Ron Sims, District 5 Bruce Laing. District 6 r Paul Barden, District 7 Bob Grieve, District S Gary Grant, District 9 11 Department of Public Works Parks, Planning and Resources Don LaBelle, Director Joe Nagel, Director i 1 Surface Water Management Division Natural Resources and Parks Division Joseph J. Simmler, Division Manager Russ Cahill. Division Manager 1 Jim Kramer, Assistant Division Manager Bill Jolly, Acting Division Manager Dave Clark, Manager, River S Water Derek Poon, Chief, Resources Planning Section Resource Section Bill Eckel, Manager, Basin Planning Program 7 Larry Gibbons, Manager, Project Management and Design Section Contributing Staff Contributing Staff Doug Chin, Sr. Engineer Ray Heller, Project Manager & Team Leader Randall Parsons, Sr. Engineer Matthew Clark, Project Manager Andy Levesque, Sr. Engineer Robert R. Fuerstenberg. Biologist & Team Leader Bruce Barker, Engineer Matthew J. Bruengo, Geologist Amy Stonkus, Engineer Lee Benda, Geologist Ray Steiger, Engineer Derek Booth, Geologist Pete Ringen, Engineer Dyanne Sheldon, Wetlands Biologist Cindy Baker, Earth Scientist Di Johnson. Planning Support Technician •0 . Robert Radek, Planning Support Technician Randal Bays, Planning Support Technician i Fred Bender, Planning Support Technician Consulting Staff Mark Hudson, Planning Support Technician Sharon Clausen. Planning Support Technician Don Spencer, Associate Geologist, Earth David Truax, Planning Support Technician Consultants, Inc. Brian Vanderburg, Planning Support Technician j John Bethel, Soil Scientist, Earth Carolyn M. Bverly, Technical Writer Consultants, Inc. Susanna Hornig, Technical Writer Virginia Newman, Graphic Artist Marcia McNulty, Typesetter Mildred Miller, Typesetter Jaki Reed, Typesetter Lela Lira, Office Technician Marty Cox, Office Technician P:CR 38' IJ I I_ SUMMARY Hylebos Creek Basin is located in the southwest portion of King County along the border of Pierce and King Counties. The basin is composed of two subbasins divided by Interstate-5 (I-5). The subbasin west of 1-5 contains far more development than the eastern subbasin; however, the impact of urban runoff has been less severe in the western than in the eastern subbasin. This is due to a combination of highly impervious soils and a system of wetlands I that act together to absorb and detain increased runoff. These well-functioning natural systems thus far have helped to prevent many of the effects of surface water damage in the basin: severe erosion, flooding, and habitat damage are not extensive, although there were several examples of these problems observed during reconnaissance. e t Specific problems identified include the destruction of wetlands and streams by sedimentation, bank erosion and downcutting, slides and slumps on steep side slopes, and observable pollution in some runoff flowing through drainage ditches. Recommendations include steps to 1) inform governmental agencies of findings, 2) reevaluate specific surface water management policies, 3) maintain or enhance instream and riparian habitats, 4) prepare a comprehensive basin plan, and 5) construct the capital improvement projects selected through a special set of criteria. 1 IL INTRODUCTION: History and Goals of the Program In 1985 the King County Council approved funding for the Planning Division (now called the Natural Resources and Parks Division), in coordination with the Surface Water Management Division, to conduct a reconnaissance of 29 major drainage basins located in King County. The effort began with an initial investigation of three basins --Evans, Soos, and Hylebos Creeks — in order to determine existing and potential surface water problems and to recommend action to mitigate and prevent these problems. These initial l investigations used available data and new field observations to examine geology, hydrology, a and habitat conditions in each basin. Findings from these three basins led the King County Council to adopt Resolution 6013 in April 1986, calling for reconnaissance to be completed on the remaining 26 basins. The Basin Reconnaissance Program, which was subsequently established, is now an important element of surface water management. The goals of the program are to provide useful data with regard to 1) critical problems needing immediate solutions, 2) basin characteristics for use in the preparation of detailed basin management plans, and 3) capital costs associated with the early resolution of drainage problems. The reconnaissance reports are intended to provide an evaluation of present drainage conditions in the County in order to transmit information to policvmakers to aid them in developing more detailed regulatory measures and specific capital improvement plans. They are not intended to ascribe in any conclusive manner the causes of drainage or erosion problems; instead, they are to be used as initial surveys from which choices for subsequent detailed engineering and other professional environmental analyses may be made. Due to the limited amount of time available for the field work in each basin, the reports must be viewed as descriptive environmental narratives rather than as final engineering conclusions. Recommendations contained in each report provide a description of potential mitigative measures for each particular basin; these measures might provide maximum environmental protection through capital project construction or development approval conditions. The appropriate extent of such measures will be decided on a case-by-case basis by County officials responsible for reviewing applications for permit approvals and for choosing among f P:HYL 1 I1 Hylebos Creek Basin I (continued) I ) i I competing projects for public construction. Nothing in the reports is intended to substitute for a more thorough environmental and engineering analysis possible on a site-specific basis Ifor any proposal. j III. FINDINGS IN HYLEBOS CREEK BASIN 11 11 A. Overview of Hylebos Creek Basin ii Field work in the Hylebos Creek Basin was conducted in November 1985 by Ray 1 1 Heller, resource planner; Randall Parsons, engineer, and John Bethel, consulting 11 geologist. The Hylebos Creek reconnaissance was the third of three pilot studies, conducted for the purpose of estblishing research methods to be used in similar t reconnaissance work in additional King County basins at a future date. The findings and recommendations of the study team are presented here. .i The Hylebos Creek Basin is located in the southwest portion of King County, along the border of Pierce and King Counties. Although most of the reconnaissance work t l was conducted in King County, a small area of Pierce County was also included. The basin is divided by Interstate-5 (I-5), placing one-third of the basin east of the 1 highway, and the remaining two-thirds to the west. State Road (SR) 99 also runs i north and south through the basin. The east and west portions of the basin are separate subbasins of the Hylebos Creek Basin and distinctive from one another in I their natural features. These differences, primarily soils- and drainage-related, will be i j discussed in later sections of the report. Hylebos Creek originates at North Lake on the northeast border of the basin and flows south and west,to a confluence with the west fork of Hylebos Creek in Pierce County. The main stem then turns northwest, eventually emptying into Commencement Bay. 1 I Commercial development in the basin has tended to follow the north-south corridors of SR 99 and 1-5. Extensive commercial growth has been surrounded by both multiple 1 and single-family residential development. Areas east and west of the commercial zone are composed mainly of scattered subdivisions, with the southern portion characterized t , by low-density single-family dwellings. The central portion of the 1-5 corridor will continue to develop for commercial uses, with either side containing areas zoned for I office parks. The peripheries of these office parks will develop with multiple and medium density residential areas. Low densities at a minimum of 1 dwelling unit (DU) per acre are planned for the south-central portion of the basin along the creek. 1 1 Geologic formation. The Hylebos Creek Basin was formed by the most recent retreat of the Vashon glaciation, approximately 14,000 years ago. This action created the rolling hills of the upper plateau, as well as the steep, rugged slopes that reach down to Puget Sound on the west and the Green River valley on the east. The uplands of 1 i the Hylebos Creek Basin are largely underlain by glacial till; deeper stream valleys are underlain by sandy outwash deposits or by lacustrine deposits. Since the period of E glaciation, topographical modification has occurred through fluvial erosion and deposition. 1 Much of the basin was poorly drained after the glacier's retreat, and numerous surface 1 J depressions were left behind. These are now occupied by the lakes and wetlands of P:HYL 2 €1 Hylebos Creek Basin (continued) F1 i 1 the basin. Hylebos Wetland 2418, the largest of 29 inventoried wetlands in the basin, is centrally located in the basin and is partially owned by the Washington State r Department of Parks and Recreation. j Hydrologic and hydraulic features. The Hylebos Creek Basin is composed of two subbasins of similar extent but which demonstrate significantly different sensitivity to increased urbanization. These subbasins are essentially separated by I-5 and were described under "geographic and land use features." The contrast between these two areas becomes apparent when observing their respective stream corridors. Both contain yi urbanized or suburbanized areas in their northern portions that contribute runoff to j relatively natural stream corridors running through less developed areas in their southern portions. While the subbasin to the west of I-5 contains far more i development than the subbasin east of I-5, the impact of development and the resulting urban runoff has been less severe in the west than in the east subbasin.., This is due to an extensive system of wetlands, centrally located in the western basin, 1 that reduces the effects of increased volumes and peak flows produced by development. i A second mitigating factor is the presence of highly infiltrative soils that transport surface water runoff into the groundwater system. There are significant problems of erosion, sedimentation, and destruction of wetlands in the west fork of Hylebos Creek, 3 I upstream of the wetland at 348th Street. These problems will be described later in the report_ `1 i � Habitat characteristics. The instream and riparian habitats in the basin vary from good to vety poor. The presence of infiltrative soils helps to assure good water quality for fish, even in many areas where there has been extensive development. This is 1 particularly true in the western subbasin. There are also some good instream and _ ) riparian habitat remaining in areas where development-related problems are common. • For example, runoff is not being detained north of South 356th St. Erosion, caused in 1 part by nearby construction, is present at this location, and observable pollutants (e.g., oils and sediments) are being deposited into Hylebos Wetland 2418, which serves as a buffer for the downstream reach of Hylebos Creek. This wetland currently allows salmon to flourish up to the area along its southern boundary. t The north fork tributary of Hylebos Creek also supports salmon spawning. This tributary derives its major source of water from an unmapped wetland south of South I 359th Street and from groundwater originating west of 16th Avenue S. A tributary j from the north entering this wetland brings visible pollution from SR 99 and the local truck stop and threatens the water quality of the wetland. If water quality worsens, l the habitat values could also be damaged or destroyed. The north fork of Hylebos upstream of South 348th Street has been diverted into the east fork. As a result, the east fork is heavily impacted with high-volume flows, i 6 erosion, and visible pollution originating with large expanses of impervious surfaces in the area north of this tributary. Good habitat still exists in some reaches of the lower canyon of the east fork, but corrective measures should be taken to address problems here so that the tributary remains viable for fish. No salmon were observed in the j north tributary during the field work. B. Effects of Urbanisation in the Basin ii P:HYL 3 yI !I 1 { Hylebos Creek Basin I :." (continued) i-- '1 r ' i Earlier sections of the report have addressed the mitigative effects of porous soils and extensive wetlands on development-related problems in the Hylebos Creek Basin. This f1 unique combination of soils and wetlands has been able to offset increased flows from 1 increasing impervious surfaces by absorbing and storing them. In addition, these natural features have served to filter -- i.e., cleanse -- many sediments and urban pollutants (such as grease and oil) from surface runoff. Still, there were several significant problems identified in the basin during reconnaissance that foreshadow more serious degradation to the environment unless they are addressed. The destruction of wetlands and streams, erosion and mass-wasting, and worsening water quality were among the significant problems found. These problems and solutions to address them a i are discussed in depth below. t i C. Specific Problems Identified The study team investigated approximately 60 sites along the main stems of east and west Hylebos Creeks and nine smaller drainages that join the main stems. . 1 Investigation revealed a number of problems in the basin, with the severity of any 3 l given problem closely related to the amount of development in the area. The major problems found were in the area of the east fork from I-5 to the Pierce a I County line, where soils are particularly susceptible to erosion_ The construction of shopping malls, park-and-ride lots, warehouses and other light industry, the heavily traveled corridors of I-5 and SR 99, and other facilities have produced alterations in the natural drainage systems of the area and have reduced the area of surface soil available to absorb runoff. In addition, the.increased runoff from impervious surfaces erodes and widens drainage ditches or rushes through drain pipes, most of which have been channeled directly to streams rather than into detention sites. Water pouring out 4. of drain pipes into streams has increased erosion, both at the point of entry and farther downstream. In addition to erosion problems, automobiles contribute oil and other pollutants to runoff in the drainage system, thereby degrading water quality. The most significant examples of these problems are outlined below. Appendix C contains an extensive list of problems and solutions in the basin. 1 1_ Wetland and stream encroachment_ There has been rapid downcutting of 4 I streambanks and accompanying rapid deposition and invasion of gravel, sand, and silt along several reaches of Tributaries 0014A and 0014C and southwest of the intersection of South 336th Street and SR 99. Wetlands at the junction of these 1 two tributaries have been ditched, drained, and cleared of all vegetation. These forms of encroachment, in evidence at these and other locations, reduce the wetlands' ability to perform their functions in the maintenance of water quality and natural retention and detention. ; i 2. Erosion and downcutting. Bank erosion was the most common problem noted in the reconnaissance. The severity varied from 6-inch cuts in alluvium to 10-foot ' cuts in glacial deposits_ The latter was observed on Tributary 0016 at collection point 12 in two locations. Less severe examples were found on Tributary 0006 near its intersection with 0016, and on Tributary 0015 at collection point 12. Erosion will worsen unless addressed, and will destabilize banks, carry silt downstream, and (in worst cases) cause flooding and property damage Wetland 2418 is particularly vulnerable to degradation from the situation on Tributary Li P:HYL 4 '42_ f Al iiHylebos Creek Basin (continued) A 0014A, just north of South 343th Street. This particular site has a 6-foot culvert that dumps water from a vast impervious area into a ditched channel. The result Y1 is massive erosion. 3_ Slides and slumps on steep side slopes. While erosion is a natural process, human action has accelerated the process in certain areas with sensitive soils. In i some cases the result has been the downward relocation of whole sections of earth on steepslopes. There were numerous instances of this problem observed on Tributary 0006 below collection point 12, where severe erosion has produced bank undercutting and, in turn, sliding of the upper bank into the stream. In many cases this accelerated process could be associated with recent construction in the vicinity. Additional construction will continue to cause the failure of soils s 1 and surface water systems unless current problems are addressed and future ones 11 prevented. ! I 4_ Observable pollutant discharges. Gray, sudsy water covered with a sheen was observed flowing from a culvert under Southwest 356th Street between SR 99 and x I 16th Avenue SW. This visible water pollution appeared to originate at a nearby truck stop, which provides a variety of services to its clientele, including truck- washing facilities. This particular problem represents one extreme example of t how vehicles impact the natural environment. IV. RECOMMENDATIONS FOR ACTION ii The following recommendations are based on findings of the field research in November 1985 and address the original goals of the Basin Reconnaissance Program, as outlined in the introduction. A. Inform appropriate governmental agencies of detailed findings from the field F reconnaissance_ Detailed notes, collected by study team members, specify problems at I sites along the reconnaissance routes. These will be forwarded to appropriate agencies, including the King County Building and Land Development office and the Washington { State Department of Fisheries. Meeting among Reconnaissance staff and other agency representatives to coordinate follow-up efforts should be held as appropriate. t B. Reevaluate specific policy issues regarding surface water management_ These may include the need to: i 1. Reevaluate stormwater rate and volume release regulations for new development to determine if they are adequate to minimize downstream erosion and resulting . i damage to property and habitat. 2 Investigate and promote the infiltration of surface water where environmentally feasible and economical to reduce increased runoff from developed areas. Also, encourage the use of grass swales and open-ditch conveyance systems to improve infiltration and water quality enhancement capacity. (Note: The final display maps for the Basin Reconnaissance Program show those areas where infiltration is likely. Final display maps are located in the offices of Surface Water Management. Building and Land Development, and Basin Planning.) i 1 P:HYL 5 L/3 IHvlebos Creek Basin (continued) 2 3. Develop policies and ordinances related to the assessment, monitoring, and control of urban and nonpoint source pollutants. Obtain background research on which to base the design of regional stormwater quality control facilities. I 4. Adopt more specific regulations regarding development in or near wetlands in order to maintain them in their natural states. The proposed Sensitive Areas Amendments (to Ordinance 4365, King-County Code 2104) and the Surface ` t Water Drainage Manual (currently in revision) are examples of regulations that would assure the continued function of wetlands as surface water quality and 4't quantity controllers, as well as preserve their habitat value. If regulation is ineffective, the County may need to secure easements or other forms of public ownership. 4g 5. Require the establishment of undisturbed buffers and setbacks adjacent to streams I. , and natural drainage swales. Variations in stream morphology and geology indicate the need for stream corridor guidelines that consider these factors. Improve enforcement of "no clearing" covenants in these sensitive areas or seek easements or other forms of public ownership by the County. Fencing along streams in livestock areas would improve water quality and reduce erosion and sedimentation. 6. Increase current maintenance levels of King County surface water R/D and conveyance facilities. Due to a lack of funding, the maintenance of existing facilities is insufficient to assure their proper functioning. In some cases, facilities become dysfunctional and fail. These problems will only be aggravated by additional upstream development. C. Maintain or enhance the instream and riparian habitats by: 1. Constructing regional detention facilities above RM .57 on Tributary 0014A and on Tributaries 0016 and 0016A above Southwest 360th Street. These facilities need to trap pollutants and sediment, as well as reduce peak water rates and volumes, in order to protect downstream habitats. d 2. Adopting stream corridor policies (ordinances) in the Federal Way Community Plan, similar to the Newcastle Community Plan stream corridor policies. 3. Monitoring water quality and removing pollutants and sediments before they enter wetlands or streams. 4. Identifying, mapping, and providing protection and enhancement of fish-bearing streams, as defined in the Sensitive Areas Ordinance. D. Prepare a comprehensive basin plan to consider, at a minimum, the need to: 1. Examine existing storm detention and conveyance facilities to determine whether their control orifices are properly sized. This will optimize the detention site and achieve maximum benefit to downstream systems. 2. Evaluate proposed projects as to their cost-effectiveness in mitigating the impacts of increased volume and peak runoff from continued urbanization in the basin. P:HYL 6 1-1 Ti r Hylebos Creek Basin (continued) 1 (See Appendix A for a list of proposed projects in the Hylebos Creek Basin.) 3. Identify stream reaches critical to the maintenance of anadromous fish and trout populations. 4. Review geologic findings from this study in order to identify areas of particular soils sensitivity and to develop special analysis criteria for new developments_ 5. Establish floodplains in low-lying areas of slight gradient for existing and developed runoff conditions (i.e., areas adjacent to wetlands where inundation of properties may be significant). E. Construct the capital improvement projects identified through the CIP selection process. This list of CIPs appears in Appendix B and includes structures to: • 1. Calibrate, retrofit, and improve existing detention facilities and conveyance systems to assure that they meet current and anticipated demands for surface water management. I: 2 Stabilize channels and slopes in order to prevent erosion and mass-wasting 1 problems. 3. Provide regional detention facilities, including the use of wetlands for this purpose when biological assessment has determined that such use will not damage t the wetland's habitat values. ^ t 3 P:HYL 7 415 I n 1 HYLEBOS CREEK BASIN ( 1 l • Basin Boundary _N Collection Point Boundary O9 Collection Point f 1 ,,,.:,,. Stream j 0006 Tributary Number *2411 Proposed Project Sites a 'i Scale 0 1mi. i •N00 V•I6•N••••• •• • 1 • • I •; 2404 • • • _ •• • • • - f• - :• • i • • • ••••••••••••�• ; • •• 2403 • oo • j : ••2402.'* • • / • • / • • • • •7• �®1 2421 Al' •• *2422 ; 2405: _ 241 • •ro : • • :ai • ; • - 2406 o • O • S • 3 •yy��, • • ©A ••T.. 40 •8 • • • •,•2418•.L •• : _ • 2419 • 0=• o _ � ' i • osr a • a 1 • - 420 . • • ••• �`l ' 2417 <rt• ' • •• G. . *• ,, .• 24 -_ o 415it) S ` • •• o �• : • ••241110 0 oo. � `/ • i Z• • •••• ` • •\• • • / 41* S i;" ; ti r •• ( ; • • ••• • I •.••••• 001s' // •_ , - •• • 1 o •fr • 2409 • • � l • �__ 1 / "---�_ • • •• `• ••' i fi TI Tt i -I v. i V= p O c J v E oo S x 7) v E in C- e00 1 O 69 v `'. 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E — v C > r: o o ^ > c-i c . i H m m — c x v 7 OL `) OL O r �• Y — O M O R rn R — :=.1 v _ 'l: �. r Lti > U v) N .-. 3 .. ✓) �7 .^.. 3 R U R O .. m 2 m , O N U co a - C N O ...- R R V _ 5, y ` J C N _ y R O of O -- _ U 0 C C. C v `-.. E C j UR Q C (I) J C cii * 11-- -, _— C O r: z v Z N a 7 N N 1 1 O C c "3 vWVIj 69 6.9 69 i c L O c. J ca. Al _ I T. T. G L 3 3 C C .> L C i. v T O 3 _c -- • h to) r -- c. C. T. T r 7 a O :3 V, J V: a.. cn ., 7 U C n O to > r N C G T v _ c_ _ c c c to cl _T'c \ 3 7 U = C 3 .- C O C > C - O 3 ^ C c ^ E n> O G O o O cO v . : c :' . C O G. h u L. O a - O 0 O c 0 c p >' a 4 C i > 3 > o3 o� �p 0 c > � > cc c -o ' • o c c-„ c 2 (4 I ^ < C - .. 3 +Cj ZS N _T G c >-. > v O ;n > .- 0 :n > G j c i; i. Q O < C 'y J Vc v crUn 0 7 p > ✓ �L. :> c v - 7 = r J c v, ;, c - O Vi h a0 = L c , T s v e> O C > > iiiZ 7 0 M c .7 it J :.J G v3` C. c O 7 _ r 3 c j C _ ^ c , Ou ca o J' J tp - ✓) :> O v ^ ✓l O n t J •l. fl 7 0 cs tD J 0. O T O I. >. O , " • G V J , C h C J O t' '.3 .... J tp J O .4 V ..� 4 .> 3 .n Q tr il'IIU ; h 1 — C _ > '> = 0 ;r IEfl1 ,0 C U U `' l i C - '7 -7 rt v v - j J UI x y . < , CA. Z. fl fi fl fi N . ii g j $1 A •i c o L ir c•i g OC (4 v a... .^.. •r• y - 7 G v 9 69 r vi 0 ` G.9 tic .:1 C t v O i "1 0 h h _x h L. t . V C U J G` c = T H 10, y _ O "_ s e 0 n h = o c 3 C G y Q •V :! J O' 7 L. •'3 • .° o - c. 3 - `c. u.p L - Q v - c L y c O C 3 w o '� ? - O w . c 1 ° _v > E g 0 v. c w O y -J 3 - v v: o _, c a = 3 0 p "CL � 3 = g 7 Ov. = ° 3 r L. O i G� 7 O �: v J > 7 O G �``. O a O w y r c -:15 c 7 • j i' a„ T C O c ° j i T O .J J i 1 < c.3 a - c c s L N c C. >` O O C 'ah a � ` } E v G � v), 'B 0 . _O C Syr 3 y L T y • C v , cu 3 O� m ca 0 C Cn a, 0 •- 3 r ' L O - L • , 3 C C. .. ssd g T L N C J 3 V i , ii c> c _ p '3) y ez e c y O = T y E p - w _ ? 0 = y O . '.' > ° w yl C c ^, ) G L L Q ? • C am.. N l O `. c ,- y O v: 7 7 v O r m O Y 1 7 _ C �"' a_.. c v' 7 '_ ,7 h C L y C C C C 3 O 0 C. L :- O L 7 ,3 C C = J 3 E G c L c •c p O c 3 J =O C y = C :e• , O i _ L f c •- T E y O v c r_ C.) _ l i; J - C C Q O = c c O '7 a•ny • 7 L aJ y •i ) C - f , .- y O ) O _ _ Q = J O 7 7 v ▪ L O ! l •O p :c _ O ° C Y C. c y O -r. .)( c 0 _ - y C l f O J C N -- --- (•1 Ir 0 1 H Z (mil (V c i nl _ L'�'9 t t Y1 3 L F! �' C v '� C C i i v szzQ L. o o -. L o v� Q O C 3 E v v; — i ^ o N .`ii c v (NI M v 5+'T T 4, 49 69 SR 7 G �. y C C '1 3i 3 C �. 7. V y CZ �"Jy .c i.: t. V . - 'r C M. 0 •t c G i= -aC o3 f y .- �". 3 O ?) v. s c O i 3 v T= O C O 0 C v, CA N O v 3 L% C O • I. C a) '0 .0 C h �iJ. L Z vyJ, J 0 0 0 C i r c G O O > C E. s ^ 7 > c, o o . �+ 3 C G 3 CoQ V y O G .r 3 vC r — G - t v :� "V -0 3 •c o.0 "V o ,-, v. L 3 = `^ f t 3 > 3 c c 0 _.. _ E - 3 N 0 c G = Oo av q 'J O c :) G. r _ O h 3 E C.Y N 3 = c C G t H _In •1) N c (�I O J O G v o O f >-. ca .' L L. c G c 3 - 3 E. E- 3 0 '_3 i > : C c. .) T. U- - T o - J J ..., . .... ,_ ,••". c c ` C., J.. , ,... C C C 3CZ C �. ri -C a. t. = J =O f C o 2 .. J 3 .r = f J- G T 7 - O c 0 0 C >. O + C = _ _ _ = c 3 - - J ^ -a fr w o to 0 > o r _ > o G ? >' o '+ L C tom. _ ;., C c.. v > :, o .. 'J t' .^. > - C 3 y CZ t U s.' - , cz - 7 a. v: C . - 3 =:, o . c o v WP b u C f - , o o , 3 T 4 C J - C ) - C = C_ - J C '-.' ) C C J L.-1 C — > _. - 3 .- .... c::: :/) C.= C (.) r. .- L.: ' ✓ C. c 1 P i J _ 1.2 C l/ N �C C4 = i_ J C 1 .... Z. i 1 f`I N ` - 9 r fv.,.fr a VO c c c sc ',r,, N _ r -• O c ci St.) , 3 ::.1 c v C 0 p o �. = L C p 3 , t' O h U V c 7. C , �' - O = r ' 1 o 0. G 3 o G a cn Q * 1 J L .0 L C U ^> +J U C '7 CZ C t 0 L pro O C c j 0 VI p _ Le V r - G _ , T C L O O i 'v: J `O C N > a 3 ^ L c ,', o s — J Tr U L 0 V ; v ; �' Q N L. c. � G n c � f ..:. -c . v-. 1 7. i9 V ' c, C GO 7 C ti- ;, tV C) L G L cz .41 Tr C p u 0 • y p C O v C - O v > ^ i O 7 r C C , L o - v C. T .0-- p ',_ ' ,C C v C L C G T C. J1 L L• N^ T -y L _ �i •� ..d L J l - c.0 C 3 ° = 7 j - L o3 .4 L3 v c r; ..-i _ Y C C4 C C _ - _IC y - '�% C _ •I.' i >` G = >� c. i — •_ > C C _ C _ — > i — C -C - L n _ L — Z. — C 7 v L. i _ 0 T to C C. '� , _ O > r" O 45 - C * >`• c O `r - t aJ ro a . 1 < 1) I . - 5 - Z ci ciTr 1 P APPENDIX B CAPITAL IMPROVEMENT PROJECT RANKING HYLEBOS CREEK BASIN I I Prior to the Hylebos Creek watershed field reconnaissance, 11 projects had been identified and rated 1 using the CIP selection criteria developed by the Surface Water Management (SWM) Division and the Natural Resources and Parks Division. Following the reconnaissance, 22 projects remain proposed for this area. They include the 11 new, previously unidentified and unrated projects plus the initial 11 projects. f The previous SWM capital improvements project list for the Hylebos Creek Basin had an estimated cost of S2,880,000, while the revised list increases to an estimated cost of S4,326,000. This 50% 1 i increase in estimated capital costs is due mainly to the addition of 11 new projects_ The following table summarizes the scores and costs for the CIPs proposed for the Hylebos Creek t Basin. The projects were rated according to previously established SWM Program Citizen Advisory Committee criteria. The projects ranked below are those for which the first rating question, A r ELEMENT 1: "GO/NO-GO," could be answered affirmatively. The projects can now be considered for merging into the "live" CIP list. Any project scoring over 100 points should be considered for 1 incorporation into the six-year CIP plans. 1 , RANK PROJECT NO. SCORE COST A. 1 2401` 128 S 238,800 j 2 2405* . 125 450,500 3 2418 106 321,600 1 t j 4 2415 105 245,600 j 5 2417 95 215,400 A t 6 2407` 70 160,200 7 2`}Og 70 153,600 ij 8 2409` 70 150.400 I 9 2413 65 193.700 j TOTAL S2.134.800 1 ' ` Indicates project was identified by SWM prior to the reconnaisance. i 3 ' 4. f P:HYL.APB/mim B-1 S2 ' I T C L I G u f O• O O • .... 7 �: = y ti: c V C. 0 c C C �. D c .- sr: G O C. _ c c �= p 0 ,_ c L C '_A 7 C J C ` i. C. C T.. G 7 - v - C) O _a v c -_- v - > O L V.:, C p c c. 3 LJ U � Z - C. O 3 .= n o L Z , t• 7 A Z y p p 0 7 7 C = ZC c v O r c O C:`J• C.) V J i .� 7 r O 3 = :> > C.) GA 7 2 C 7 c = f O 3 p 7 _ cr v: -, G - r G y G V: V.I. G Tj V p • C. .' _J .- p > G i C t- C.v < c _ >. -..• c _ :.i . ^ C C0 i cr.C `/ O O rc C c V c. 't— O X ct -_0 N• C E7 E _c Ur o G p 0 0 j p 7 - J C . 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" / 2 \|/ - - \ - tr. \|\ \ /| © a . / L. Sii 4 7 Y c_ U C 1111 v Oo 3 ' oLc c c_ U vs Y j G L O 9 ) Q C L� J .� Q J l C l U _ U 17 1{p o Y G G _� 0 a I flit ZliVs; tj ` G c 1.. •r_ v c " 7t 7:4c v s�J.. C 3 :Li v H O J C �. a. C g « _ v) j rj v O v C 3 3 c ` p ° £ ' 3 - w C.; O Q C p > v N v y v v ,_ c O V > ^ G > v O = C v C c C C. f 7 _ O Q o _ p Z. :, a O O O Q G n sU C p c c c `" _ > _, 7 �- .7 �/' Z �- cS — C J 1-. U O -Q J c G Wit. v�i .c p C 0 ‘7= 7 O C. c T3 S C. f V- _ Y E • _ _ _r C C - v 3 L E g o c o ' o o c A y " >' 0 a. `r..• C. v-0 C O - L C.,h v Q • 0 .-O . OC ....NC v s c = O v c = r . c.-. > 0- J 0 C J C. i 7 y C ..-. U -� " C U CH UC r 71. i" v 3 L C J _ G r �_ er, c =c l •J _ O ^: • CU C - O U _ cC � s J • _ cv ' J E tC O z O TO O v (3CZJ v 0 .-- •C. UC C:. < k c: O Q al 7 14 rJ J C.. > � tJp v �. c - 0 v �`-� c r, _ C O c 0 T L: r 0 >, 3 *n c l o v o c _ 3 O O m o - o .- o - - tJ. O `- n 7 - O c r > c .3 �' Sn w _ o •y v c _ W Ws . o ci J �� = c - G eD a c > C .. :A i! O 7 V, U > r. C 'U i. '7 .- r Z f i v C - O c v - G - • . `o C O• O - O Y s. C COCr •. O J <4 , C J 'c - CvGC - � h _ eh .- 1 t Y •• C C . -7 o C.i _ �` J • C C /` L :) C v: L v, .19C 3 J Ovp C.- Q :� c 0v c ^ A _ C c. a - 9 0 -0 00 - J _ c o C. 15 :J O r" J ✓, ^ • L.. ,../ — "..., ..7.--H,_..--.5 c---I 2 _ _ �, >= v i� 4 7 \IT --k g\ � 0 ! �Ez \ IL c /\ \\ ƒ /c. t 7 g / c - m & /! _j ƒ \ / ƒ \ } 2 \ . ! � 0 - / / k \ - \ § R \ U U > U \ } ! , 1 vi:2 E 3 = 7 Cr.; - % / ƒ Cr. e c \ , \ - 7 _ § / / \ f \ _ ° .- \ to J c ° 9 \ > 0 ) ° c.,-. q 7 C 0. c E - ) c c - e o 2 0 , / _ - = g -' - g - � \ ' 2 k 3 - - \ \ 9 o % © - o _ . , - ~ ( / c. k § a c s ) 2 3 _ - a % \ E - .- c — C - § C \ - o © / • es § \ 5 \ \ C : l 2 , g E - / a / / / g g d G \ \ : 1 . E _ ) \ } 2 ....... \ \ •- , _ g ) /2 \ 7 o 8 § \ a - — / k \ a \ - ! 2 Q c o g u c a c. - \ / / § \ ; 2.\ • .- s ° 2 a .- > > c _ _- ' / o / 9 / $ ' e 2 � 3 c J ef c o - 2 / - ~ 2 c \ 2 - c _ ° 2 c o - " '- \ •c E ° o . ƒ\ $ \ @ • � �3 V. . c - - am/ Ec £ - \ f c 3 ƒ V. 8 2 5 e F e c o ( ; �\ m. 5 ƒ» 2 aC _ •_ / / § \_ a § 2 - 2 .& . e - C. • a c f : \ &. . % 52 / \ 2 � / .2 2 _ J / # . , . - _ £ - _ o - a \ ƒ % / c E 2 g d / - = c .\ ' ( \ \ g e 5 % _ = 2 2 . § / \ -0 E 2 . / Z g ! ƒ \ - c. 2 E $- f. ? /\ / « C \ / J \ \ _ ) /v e _ _ c - - -, -, - 2 / / w 0 \ / F V. \- ƒ N -, w &// _. I \|/ \ \ \|/. ` / \| \ _ - ,_ _ - \ \ - _ 6 � 5 = 2 =I . 2 i ' C Y; 3 L c J OC 3 J O �' u Hi j y LLc. pp �3 '' c J n 2 J OI ! f ..... Q J `y J J _ ` C J - - 3 o c O cj 3 a, Y c 0 0 p j J C • _ j _- c C >` 0 7 '.Jj N o C C• C 5 C :-) c C C 0 O > C C C 3 v - ` c 3 O J L v .v V; c t� O O O CZ H w L c _c _, TB V . ia L A L J J c j C w _ _ � cY • c= � � = vi — o E 3 J p v C N c 3 v _ v- t� 3 .. �` c = c O o -c - J r. > ...5) H y C J = y 14 V 'n C G ^ w _ C L w^ C J V1 j y C, P 3 p o V = 3 `o O = `- ` _ C c 3 3 _ _ _ yy G•- o ' o w > _ - 0 3 i 3 ac-i c = ` > [! .'J 3 _ C :-! C ^ c y C-` L w P. J 7 L - 3 31 O Y j� C 'r C 3 Y '7 J c c r C 6 Y i p a p v ca n cs e p `lj pr c Ci J _v _ •"- 3 J „ co c = cc - � . v ` � 3 � c _ x o C.) C. C.) v p � y _ + c 0 c •IA c J C O '.- C c — ;" = ' ' C 0 - 3 0 O g _ yc _ __ - # %� v J C =1 3 F. J J J J c .c C : 3 > - J O R _ c. J OC 7 L-4 L: : .% — Q O -.>i o C. '. •- ep ?` o' 3 N ; C c r L '- L ' 3 •� — .. C 3 c. U p o J .6' -� ' o r o . J o 3 w�: o 1 o ``'c �! n T c c c J 7 v > O a Cl ` 0 •- V _... C 1 CCJ — ij N y C'!, (^, C i -E. .'I <`1 T c`! v.. CIS7 / fil L. L. y. Ce. L L 7� 7 cr. , _ 3 C CCI O O C O _O LI a J C E. 1-. L : - . ` c v r O O G O O o v J O O.. , C. G V C 3 O. 9 — c 3 C o 3 C 3 0 L L �` 3 _ 3 v r. c C. N c a. 03 = ' C. N = v O 3 r - - C - L. _4 1 O = Y C > C Y C p p L G C C C C C - ) c _ > C > C ') G :.7 "' G C v L fa. C .� U a. 3 C C = Y , J p O C ' v vi▪ O O L L VI Y C - c L L L J ▪ O u H c. 3 Uv , , , • , I , N 3 en — o C - i U o �I 0 o C a "w ia N I 7 N -- 0 h •C o i O c - '- Y O OL .. 0. O :i O C CO ;) ":n 0 fl. cn c+ O r cr, N C - v - C C 3 O - O v c O c r C - c c. LL.. o a c = O v J C C C N G N• Q 3 :! C 'N 'J(- O - L - G'C - c� -- O N 'v) v� '.- c P a .* 3 J = j C r i O _ a le Q U z G. L'. Gp ez a .H ,r .0 3 tr C w C O T C C u T^J 3 - - U L N C G O U J O . p a C O .- -o -- rE il 9 C 3 C o c c �^y v >_ `/� .. .-• o t0 �i ¢ 3 v o ... c_ v 1 , L ' p v 7 C i� _ -,n v — p T, C, 3 j G c f c wN C c ... -- _t. 3 / c :r c c v c 0 J .o = 0 Oc O > -c O c = c 1 O Y - c c O , ,�„ = 7 - a c C c = = O r O O r O r 3 c C. ^, 3 w.O 3 - J C 3 v - C J J C. U L - O -F.; _ _ - v L 3 �, C JS C O O v > w C C - -- •r. c 34 0 G C - O 3 n G 0 3 3 C O r i O ` j J L i..1 E J s ...1 C� v L1 � 3 O `' _ c O C _ O r � - c 'J N 3 N C� G U (� t1S u O u a O O - V. C:. r i O C `. >-` _ Fy O _ i GL — O UI — v — v0 A 5 _ :.l i i 2 e 7 C C elv, n _ , ,„ J , _2 7 J J E ;J c_ , r ' C J •n .Cj J - i. 2 l• c c ^ ^ O p O 3 r -„ 7 -c p to c 3 - L 7LC c C. :1 = C p G _ c sO!I C - L p C. GO i p f_ 7 6 n. • z., c to.-- � c > 7 > e _ - _ p j O c _ "L .. C O _ c tD O G� i ; v. 77..., G C O c -C c ' -• > ._ 7 3 ii L - r _ J z G r - > ^ ` •67 C et ` C O �--• V ... en r C _ _ O C. i p p ,j G p p c c = _ c = = o a.', 3 c = L 3 , o - ro A 7z v r c > = C. C J C C C J 7 _ • - C _ p >, 7 r - o "' _ = o 3 3 to Jf C C t < � Z c ° o c 3 no Z 3 C c �i G� I.) O l -IC 'R a. (` C O c " C. c r ;; J c_ r .0 s — _ O C G O •C `n 0 7 c zc ; 0 v ✓ N u 7 C. 1 C c c • -4 C. - , Y C C. r �- t� v _ O _ J u ^ cL T - c rr. T r.- O O 7 _ y 0 -7 c _ _L c. •" J c C C — p J C _ -C. ' 7 C - _ c G 7 7 _ - �- v v 7 -� y r 3 o ;e c o = i 3 . c VI G:n f c • c rr 0 `p C`i o c[ O C ?Lb 0 0 - C .. v _. V v - v f i c�� cl2 Cif C�� Ci N N_ v) N v �i J ti111 - v C C IC f f t%C. •T , — _ O O f O cO G 7 v c °L ,4 — 3 > • L � c �TG j C � 7 � = LO � v > 3 c = O T` t i o H 3 o c v: G - O — i -) 7 C :•J C — _ J / C v 3 0 ' o 0 a — c x - v 00 c. .0 O rcc t)7 r J O — 0 `` 0 `� u G`" v� C C p • > c G O G— v;C J L _ J - - •- G - c- • 3 ;, • P U O - C = 5 • 7 O L• '4 v O G vJ ^ L O v P. v c 2. u c — >, n Al 0 c IfC.) T r C - J :r. = I) U ^ G •l. --- •_ o._. 3 y _ — c L. -_ C. v C - c O E ` V O -3 Cc c 0 r C C O C _ O { c Z 0 3 cL. = ti VI 3 U 00 0 et' .0 C 3 co ' en o G o la c ?� Lv C, J Y - , Y C '< GD > • O g Co O o i 0 -+ c = 0 `* C T G > i �_% L 'v_ G 0 c v v C - L .C :i :i ..� TJ ) c _ v, CL p W O dj 7 s' Y O C W c vl 3 s., ..0 Qc‘i c L. 3 ¢ U o 0 _ c.v g J c 3 `J, n� 3 L 7 C. C ' c =tD 3 c. C .C -- � W ., Zr": O 1 7 f C _ c c O r. c O '4 u c cr. = c o _ ? t_ 03 0 _ : o L •.. C ;) C .Ca v: W2 0 _C - J <•" j C 0 G7 C J CL . Y - - f -3 C v j C z. _ 5.7 `- O - C 0 '7 v ,.. ;x C. • 0 v ' C.7 f v, .. c • �.) C f 1 A i O6 O' s' 1 u ..., To -_ D .... 0 - a T_�' - - J _ J C v ^ .,, 4. 1 ,1 �. - GO i li v. >, _) _ _ > > U - Y �` C :-- = c[ .C. -_ OCG O _L ?. 4 T 4. 0 O C O p ° > 7 c. to 1 - c O t� = ° _ — v O O G 1;2 � >>� " 0 c 3 = o a = vv.. � - C 0. C.C r , Li Jp v a. J O c.. c oc ' T > = _ v a' ., `, o '' 3 U c c.;1 C = C iili' L! - G� 1.. G cl c.. 0 i U - _ °° 3 c 01 _ o c _ _ _ 7a._, V ° c C i Y 7 cr., i c , �u 7 c 'v a , , ° 7 i O v C a. ~ _ Oc 0 7 I.J+ C o I) V G O — 7 C C 3 ` yvc.. L ° 3 - 7 .... c - Q 3 > o - _ c - Q c 7 O v a_ - V v c c _ _ _ s " y et) Cr n - a. hj • j r i _ Gp j1 < 3 C c O c :/ , , pi v — c v w y v rCC V , 74> en • O • h O v p .0 • v 3 c - c o 3 £ O ^ s v c Y Cc v - OY C. ? J O O j - 1., — °r f •f _G '-4 •- = C.G �- >.C. :� C = v= > ° 3 • C C - - - - C. ,� a Co. "I% s _O J O .�.. u c ^ j O '4 c c O .- _ - v o T` .'f� C. - U - u .." a > �, y o- „ , c p _1 l 2.1 C 3 :: � _ c 0 _ , ^ o y 3 u,o Q = C y r _ J C =_ �! > - a u 7 to.c _ n O ,^�. , O •, x t O y u c - r v -� C.) 3 y C C • 1 - o er v = ?. o 3b • • 0 O j — T. — .•. i a J J _ -- r r e V 1 n j J G C :.r . f :., Ti .-.7.: 2 !• C J C •J - 1C. OL _, O , — C v C 3 3 c • O >, pf' o a. C. c = .. 11 O c 3 C c c O C J ° Y p C. i3 L OJjH 6 ' >: Q W O CQ N L f 1 - • 7 - C > - v g > '-• p 3 c i v O 0 7 O c O ; 3 O co u •r. C C L C GU ° C c -3 ' ' -▪ > Y 2 •f V: - C p C C A 1 ` = i ` 9 C Y 3 C O C - 7 O O 7 0 O C . G ° - -u ^ c. 3 • c , f 3 J j c ' C Y: GU - C I: :I � U -) C G f p r n '3E y. �w p c -a c o gg r 1 'U.O W O c v 7 O .Ar. _ - r 47 v: �-1 j O 3 1 .r Z l - - f n : _ _ p u Y GU > r G J J - C y V C u • M-rcr Y — C f Y g :1 rt.; TAc. et, v) . > c-..- :77 u 7 c... v 7 � O v r', - .__. C .0 5 it c J - f G C C S i T ., 1 p L GD : .. ,..., ,..., - V .rz J J ! - _ — _ ii v CCJ cZ � T r Y T T T T s f - II v_ V. ; G v O _ 0 0 ... f 0tt! ._ J -> j_ - J = v Q t0 0 j O T " - -• C _c = Yr. .� 0. 0 C v: 1 tc c a c a == C 0.. c •r, v_ r. E v O C .. - C".) C v :a C 7 v: v C v 11 N ••.... Cr. '� • • • I • • • • • • GO 0 t i - _ O C > C C v3 C C C.) C _r. . O f C. O .. yry TC3 e O _- LI.) a-. OC — ° O O n 0', to c w � `" v coO HE i c Oc O c y = O-- v v _ _ v = r = CO v v ? to c v: 7i o T -3 �- ; p p .3 7 •G'7 t c c = c cV O = 7 c p e, = c - 3 o c — - �= — �o :- r' < O c O - p 3 c v — v v v: 7 _ v: J r • _ v] c.; — 'v :-i v0 O (('I ..1 p v.: C ,W t 0Cvl f Q .- C — ;J! c C O O j c _ - .. J :.7. 'J C f.'. C Y 3 v; CG' C :J `' - C C T L r c '� .- j C. Ci C > = Y C) 0 • :) ^ _ v) .) v C. .r C C 7, J 7 Y = CI c c ` j > .`O C :) C .�- �- CL '�= _] :, •..• c D _ 7 _ c `O eo .� v o vpi 3 ' 3 aS n c ` o c • arc - � i ' • 1. 5-1 i - c. t ° C i 7.1 7 v _- e7 ',T I 7 v + f it - V., V - l 3 I 1 If 1 I - !, _. y 6 \ ƒ / / j / j / E p > = e !7 g . g - ` | ® g \ . / $ - _ ° k 3 - fƒ - 3 ) -3 _\ 7-1 2 E \ j = § }i I \ /•. f c } \E 0 § g 2 \ - 0\ } | 8 S & s _ rz 3 2 = _ § ® ' ' \ , . / k -, .c z \! ; ! c \ 2 0 _2 _ fi o - 3 -, i, .. § ƒ \ / 0 / \ J / 5,/! .- CZ , _ }i / / - • ' , c 0 .. - 0 7, . 0 § \ & Q a : ) m ƒ! % s Y § , 7 2 >s 5 z 0 \ S e y / ) % 0 0 < U Z . 7 2 ; 22a. Z Z j. \ } @ _ / 2 2 /7 ' / -0 ® 2 7 t .2 0 P ƒ � 0a � 3 © \! \ ) am/ s / \ >� / _ . /% to ) � e iI &/ � ) \ 3 / c t § / 0 ) ' » . — c. - . = 2 •e § / e \ - c e / \ § e . \ \ / / / s • \ / \ \ \ .7... \ � A \ 2 / ) f " 0 s 2 / 0 - iii «2 5 c = _ _ ; = 4 c- = a 7,5 / z c• \ _ _ 2 \ - e = 7 2 — c 0 P a -c > G / \ ; \ / } 7 0 / c a -• E C 7 ' Q / T. 3c ; 2 � o � j j -..) cam = � 2 - - ~ % eg = 2 1 ° - 0 2 0 = c § 3 / QG c � 3 \ 2 � 372t42 �32 W \ 0 $ \ / / \ \ 2 i) < • a- , \ c. } H 0 g , t - A : ; E ° - 2 % / / % / \ \ — 2 2 Q ; ! ! / / ® - - C } w 2 \ % \ - < . _ \ Q = \ _ % . \ / \ / \ / ` / \I/ % /| © ® . / . . El .:,.-- 3 L3 1/ _1, Y 'C GL - ° , G°J C CCY O L, 7 `_ p c c O o• C L c —• c - V — r" - ', a.. .E O 7 a. L C 1. _• - C G '' O '3 vc .- c jTpv Vi Cz :J = -- V C c , • z ' = c 3 v tr.= 3 .;) L !O 3 . _ i G Oc _ r • L. 0 C Z tr., Q :J ._ p _i CO C c a _0 O O r C 1 C g -3 J▪ C to J L J • C C 3 T. s ‘A-,p l O p 0 L -3 > O 4 _I C I- 0 c. C C G C r . c Q c >> - L 3 i s o v 0 J v Y C ?, C▪ QC `^ p G ,:J •'= 0 0 C J Q> . • ` 3 3_ _ C 6 C C C= QCG' .0 O — c ° 0 0C: ° .L. 0 0 Z Z Z i = 0 MC C7 V v, jT j L.:i / = p _c C Cyj c = = O 77 > L ' v O ' JC7 Go C C Q V C,.-,..4.10 u 3• V 3 c _ L OG C - f � .-, v, c _ _ C "3 O. c co c� c O c�i i = cLi c `~' " 3 c c c. 3 c y c _c f a = c 3 x 3 c c ' v O — f c v V• c ":: c 3 •- c . - f 1 i �-C .N '� j N• =5 T , :3 cO L V r O - C — C -r J _J `O �"' C 3 c G c - > -- • c C C . c -- 7 ` j C - i tI •_ u O i ' f �t " c, I o ° 4 • c o e l J T. 7 T — 0 i L., - v a t _ J Ni NC ('I fNl N v 1 3 0 ii _ % 12 � � � � 7_1�� ? 2 v ir F. 1 C C - _ C. -C ,_ 7 C ;� Cr.--- J .,. _ J �'r :. >, C. 7 u: ° ° °_ lss v J .. ... C ..... C _ GUt's1 r _ = _ e I . d J -• O -C 7 , c, 3 c 7 :) c C C •C J v 7 1 J C 7 v - C v: C C c - E . C - r ° - _J _ ... �., 7 C C dam ; c, '_ • > >, 3 � o _ -4 _ 4- = 0 c 1 C. :) 3 -t - O ° O ° G C j C O — f<< r > > _ . J _t _ V: C - O J: j O C := - . -) c J v O C. C •1 . 4 is ;) 3 ' i. v. = - c0 >-.. r C - = -- z _� C -3 C r. - -a, -• g c C - C- - O O '> > �- O c _C r. 2 c 7 _� 7 V 3 -r 3 " >, -• C • J C C ` - — v C N O p. =) .Cj C 7 .:J 7 — - w C -. - C j _ - C. - :) i Z v O ° C C - x_ O :, O v v 3 • _ C C _ - J _ _ '- i. - e s C_L C _ _ , .7... - _G C O - C - r Y; 7 - Vi t :� C. .- w: • C .) C ^ C v C ') 4 1 v '.] c .,, Z c c C - ° C - -G ` _ J >. v V v - = c•I -r '7 `7 !7 V J c T 1 T f 111 - y J 3 C — N tr. J C. _ - I 7 C 13 = , J v t C C f�) f is ._ . J J it1 70 •r_ - 7 L GO J U C 7 = - 'A C C 3 3 7 i I = ^ J - - c Y Y Y N r -, r f _ Occ -. v.- .. ci , . L if C 7 7 - O - . V: C J c_ _ _ r. s i • > > 7 c z. O C $ - - 7 T. 7 p Y ! ! f Uj G J • CD 3 C ? - 9 0 3 3 3 GD-- 7 - 7 N J 7 T p >, z # '_ 7 -c = -- c J 3 c c i C r C C. :. 7 _ c _ V p :) O v O a C c C. C ! >, c� .- Y C o r Y G i i < v C j O C G.0 1 0 L.. C. . Ei C G. r v ^ - ' I f G c.) N 7 tr., C -. - O > v: 7 u- 7 O O v 42 O _ >. C - C 7 0 u C C) C C. C C _ ` c C c. c 3 v ° cb ° c > e - o = Y - Y c J l l CD ,� O _ c. i C C . J 0 '- C CD • C. C • , G C 0 � C 0 C •- c l 7 .^ j f C - j 0 7 Y 7 C c = - - j O j J C = C = C. c v v 0 ^+ 7 c O :J J - -) 3 > am' C. •J. 7 :J 7 :) G. r r ` - C = 7 :n U :J :r: L S.J C t= :;.l O L. .- J 74 C. C C eD :) 7 C C O 3 . �• OJ 1.5 ^ v �. v v v J J - '7 7 CC, s v N ' G , vL - - �7 H V ! C > >. C C. C Ei. U C C ;) O ;� tom. r :...- c.. O 7 0 C >� 7 - o yam, o r. f N C - v >. , G L. C C C :) _ = 7 v.. O C •-. c _ c f 3 G = •w� cr.- G L % LQ = vi 11-1 o = - ` -- - p c = ^• J o p .- 0 > J 3 L J h Z. = G0 c c v� O - v . a -Y c vc ? C 3 c. 3Qa c ^ C 0 c : cQcjG� O OLc. O 7 .. v ^ J to c, C.. V ,.. c ci _- 7 ^ ti 2 J J C O ▪ > C C c C Q L L L 0 Q U '�' f i - -) i= c C = `i C TJ • •O c. V Q L U ,_C .C. 3 v▪ 'a4? 7 r m �, = c c c c c _ C F. oG c 3 •_ c �_ 3 c s G. O _ 0. CQ-2r- C 0 c r. O C c r' _ ' u L 74 c 3 -- 3 r G _ o ; - _L, - > r r L > r T. .J 7 C — l O C C U '� C L 'i , r: C C J J >- O O< -uo Ci a .c vO - t L0; U ' Y.y f .._-_) ,.., C C 0 O N O >C., L y- ti _ O L J •= C-•- C .- L. • 0 = YC y v v C. C 0 n JI ' "� C• j �C 7 i 7 ^i' a = > r _ C U - Gi= l .J Q J ^ J � a... ^ Y ; Q i J ...cti , " ? C •C r c - O v — a0 �1 L4.= - G ' U O = O ^ - . 7 ▪ :, G�'�, = 4.0 :, , _ 0 it f � t . . C `T 7 tY C-I _i _ 2 �i _ i _• J A. i v 0I ri C I v-. �I `r. v; r =1 r` t� i 7 _ l L. - N v - 4- ti O C. cam. _� r C' v O c 7 C r L > 3 c > = - 3 - C.) v •_ :L] 5 _ c 3 C 0 0 3 a .>� ^ L 7. Ti ,� C p Y J ,Cj C C .�. = l > C.= H C. > 'J > - J: - ._ L O C O_ C L , C 7 v C.. O > c C a. a > j v C CC_ _ 7 _ c - G v= _ v' s �.. O U 4 )2 v c ' 0 -) - C Z . C C * c c O 1.1 s , , •C - _U C = , C O _ LO :) 7 O •v c = _c C C f c C c _ _ 7 c 3 -y7 c 3 >.- - cLi vi - r 7 _ c _ ^ _ o ,tr - - 7 .) cO G r C f - > c j r C > p c 3 c _' > i P 3 :� d C Li -• 7 �. 7 7 ? O 0 U ,� O c _ C IT C J r. C — :i = o z v 0 - 7 c. _ 7 = N - ;_ •••, . C :) C C to o •c .a a `' U c c r C Z -7i 7 > f V C r l • _ w c 3 C .. r Y c C.i 7 > 7 "' • to O ^ O .0 C c=. C C •j J 3 C o f GI: = ' •• _ - - c- = - w O C - - •'' _ r _L -) , ` 7 r - C 3 - C_ - ;c C _L = O 0 _ 7 3 1 _ C - :) :: C - c 0 C i > _ C . r Z G - - 7 :) p G U 7 C Z p a O f i -, C. 1 c) _ 0 - C :J fl E1: p — Y f f i v .-.1 . i :..)I N v,� .� — N t E I i i i 1 _ [ ) 7 \ j - J \ 3 - 1] } _ = 2 5 / / 2 / 2 { E a J :Y.:.;e I i too \ CZ z c } / 2 J 7.5 \ / - _ _ _ _ \ ƒ \ / \_ / \ ' v.- ) \ - - = Z \ $ ] \ / f \ § / \ Z \ \ / c c e » f - 2 E •- - a c \ g = ƒ / \ � \ \ \ / � � •. > /� / \ 2 \ / }! ƒ § 2 E \ \ ) � _ § \ \ \ / e 2 = 2 c •- » ._ = 3 - . , . . \ G. / E /} F. E. / 1!1 C } } \ j . U f \ ... g / - • c c ƒ \ c c _ 3 k 0 3 \ ) k - ^ ® - 9 k / r d f - c \ C. U } - , / @ e 2 \ \ \.\ ƒ \ ƒ / ƒ ~ \ %\ \ / - = 3 0 - &3 \ ± C � � - \ 2 / 7 - C $ 2 3 3 E 2 \ . - e ® a ' 3 ƒ / z c - s > ¥ : : Q o % 7 0 < 2 / = - / \ / / . .ƒ/ / \ Z / / _ t o 3 5 I . { 2 7 2 : ) « § 7 . \ 2 ( = _ \ - d / / / » � 2 2 \ 5 7 & , g 2 3 y ® ° = 9 G s / -0 \ s ' ~ e > e - • c - 2 / a . _ . u e 2 x ` / a / / - ` - % y 2 2 / / U § > 3 ƒ 2 / - \ ƒ / - - § § ® m 2 » c / } \ ) \ _ c e 2 2 c / * j = j a a 3 J \ % e _ _ - ` e ~ 3 3 7 > . - , a - « -3 ƒ2 - - _ 0 \ 7 ; G_ 6 = U a - _ @ C . . ƒ \ \ / \ � f f_ \ / $-. 7 > \ \ / \ § \ j 2 / ƒ \ \ 7 / & s ° \ 0 9 22 % o t o ( / I - Z » 2 7 Z e e= E Z g •t j - . - ƒ 1 / 4 9 \ w s \ - a _ % / _\ \ 2 _ - ° - - - - / t ! / g I \ - ® r_ ; } « / _ c e_ " _ � / r < / !] - /) - -I\ - , \|/ . - - 2 _.- E! a ± % ! /) z 1. 70 ri ^ N N DIDa I ^ 13 I l_. 3 f '� :Y.: = v T 1 r .--. 0 ^. _ i ` . G = = .. TIJJJJ Li _ !i _ i + Y_ C. c vGc a=. - - 7-- C. C. C. _ • 'G ° Qo _ ' O _ QC . C _ -F ?' 0- > < -✓ C E r., .! c � O 3 ^c r -2 cQ r.v O o f ' �'� 11 =! rz ya o 41 i :-- 0' _ O �. -- _ O' r C.- n ._ C. - 3 ^. X C Q? < G c- C -s - _ r: G f C. FS A..I .n = G 3_ r .- - o E r< 0 - x c C: E G = - G c c Z Z i C :A O C. G _ !'� :� A O-0 O C r c Z C _' ? is G n �= J 7� 1 -• O �j Y. --+ - G U F. G _ c -j =% 7 ^ 3 _ r - al 7 _ G p ;n _ r. ?7 n — -r. C t; A -0 _-, mom+ 7 Q1 G J i = _ C - 0. f7 - 0 C C v= �. == 0 - G, — r G -� E 0._ — a: `` 7. _= C. 1 V = . = - c 1 j - > I f T. I ir —I> > v , r O _ C. - J 1 .:7 c: J s O D x O D ro - O = _ y . r: r n ` O -=i. _ ^ cam'. C. _ •r. �'a: D _G — _ —• _ :r. c _ _a J • _ E r. 3 rf ', .., ri c -'a7 �• c '! O .-. !: - .n rJ :A i, c G - O o c. .. G 7 r = t: FS = J 7 _ y o _ ? " G j A C- "" 7 _ G C c: = O7. _ :n 0 D E �. •-•.`� - C.. fa; i i Z ..=' ...4 = ..0 2D =" ^-: :"..: ti: ...; ci ` - ..[ e - mac„ c: C CJ J 3 • - c < J = o - O. G _c_ i 1 O J . G O _ ^ 5, c. - s D C. C. '' r 7n r X' D 7 �. ^ Nab G ... G 1 = � _ - � - o - - 7 .47 0 c i FE O c - D r 77 — c Eg 4{{ Z j r; S. G E _ ,,, 0 C c N c� cn c cy D O E F. G r: C ` f" _J _ _ r O _• 7 C.- -1. C I. _ I ' ' -7 IJ C c_ G c= .. G 3 1 �: - G O— aC G r a7 -- {( r: r r f_ c_ c_ — F _ a. r 1. _,, F I t 11 ll T 1 1 . '1 A i f 1 3 I 3 3 , ! 3 i r. 1 EXHIBIT F • 1 ,, ‘ i , I SENSITIVE AREAS FOLIO 1, ii , I 1 1 t I i I 7 3 1 i 1.1 . �d! I•• f - ��'' i G e -i � _ t ,_ /s - S x _l T . a ,_III j' l,' ',tar -. "' u i ( r r' • k y /` ( L Ldwer Green Rive _ - f k t 22 I. i t` s jf -1'...,,i' 31 j � LJ a t l - { il -;.-:'''-:''. -- "''-'-: -..-',--',-,,,-,,";'?.--'•--.-.,•-•:'-,---'----_-'';.2,_,.',..'.."-'''''-..'it-.7,-.--,',.--_-.;''.-=----",:, -,.--1 .4. •-,. - •Mit ',,__.1 I- t- / tit, _ '---" --•� ..Y- -i..i. �� Illy,t4 d' 1 1 rf+�• _ V ___i, /. t_ :^' i t _ I i j I. f 4' v` � Lower Puget Sound �- !' t 1 -, mot\ i i . �i _ ' 7- ? L _ yl { , I _ I %5 • rn ,:fie 1 \ -- y F f I i i,. r f �,r- i- I V {{ f 1 ---, MA Creek 'r: -:4 r j}' ;t ; 1- $llliii 1 E i Ili F -1 i 1 , , r- •, I ti .. 1, -�1, S , -J 1 ' f --.1-, ! F (ryI I f1 1 N • t- 11� 4 -_ � • r w t ,ram 1 1 I F - 1 I 1 _ f • 1 If� _1 _ tiJ '."!- t -...+-erg ' j , ? i i I I' C f ` t 20 2 +,,. / i /� I 1 1 �,''� - 1Li r� _ 34 :\ : J, * i t' - \• f %35 ' / +\ .. T j ram •;1 -i- \\ ' =(`405 I ri; • I g , "1 i "\ t / .. f ,__ _/J L __ i• ). 7 {` fia9b T I, - - 1 -,---- - J -u •-Y--- -_- 1'i t? --- , /�r ..1 -.-1 i _ ( \ - 1 y� t L- S r : if ° f t _ -f t, 0 . . ......i. ...„ - - r:::'-'1'i-;-\....! .rit: • 1 The boundaries of the sensitive areas dfs Numbered wetlands, except those with an ,,_--I 1 played on these maps are approximate. •'a" or "b" designation are included in the Wetlands Additional sensitive areas that have not been mapped may be present on a Bevel- King County tlands ds Inventorynted "a" The MILE opment proposal site- where differences locations ie wetlands site designatede have i f occur between what is illustrated on these been verified on the gta by a variety o- maps and the site conditions,the actual pre- sources. Wetlands Fish and l •are map- sence or absence on the site of the sensitive Nationalped in the U.S.. and Wildlife Service loca- area - as defined in the Wetlands Inventory,fierif but their 744. Ordinance-is the legalSensitive Area Lions have not been field verified. control There may be gaps in the numbering se- )' 4uence within individual drainage basins_ • 11 Ti £ ( e #G f � � fix£ + l� >i :1 ,: •,.. 1,..•:r.„ ‘• lair - -' ;—`'ba - lr V,1 • . , . , : mg IrU\ 'j rim ., ,ri.,.r,,..Ni4p;pot; 4r441:1 It por_, ___. i i it 1 + ► �� n-��+ �' ^l r� III �_ • t y ! 1 rl _Ili .2 'a �i'y� �� ,c/)1'.4„;_.4�rt�}!t(� ] +, 'f i -`, , r 1 :.:` i—c:,. I II 1 �'1 T. ♦ \ .`�- ?•'- I.Sy ,r'�� `.i ,1 r i 4_ ..T—l. 1L r 1 J 1,-__I rI L j-:1 s S ti 1 II )1 -/ tl- r _ _ E ,f�F ♦ .„;s _� I t , t- i _, 1 Ira i \ = / !A h_', /b r ,If i %� ♦ - 1 .. _ e f' 1 - t I _;r 1• � "�. cef ` � �Y 4 L/.. / - !/ /li \ t / t! -� Cr J , J( k 1� F Itr y FF _ r j: +'-- s "�• ' ( gilt ..„_::__-i / L' F , I ` - - . 1ItIIL '1414 H7 !r441 ! _ } i It 1 1 r t / ��I� '7 i'jJI • r' ♦ \ j 1./ � I -, ,— Vp.--A \ I I 1 i t^ ' fry!/ �- r/ a r �I�y> i \ .. I _ / �� / f - <' i. l--) 1.l L� i I. •�! Jr .r/-1 �Y f 1 t • li _ .. .. `\.....,_ „ . i . , 4., . ,i. .1... , • ---".,n4-..; l',.LI ^.---1 j,..•At... , ,, . [.. ;Lti .,, : • --- 1 I l a i r 1 : 1 r—t4. 1 • ! 1 r 1 i } The boundaries of the sensitive areas tlrs- • 1 "'` Played on these maps are approximate. One- hundred-year floodplains extend be- I _it* Additional sensitive areas that not suranceyond h Rate ose smaps don t ahown on lways Flood how the St reams and 1 VV� been mapped may be present on a devel- opment floodplain to the headwaters of streams. N proposaf site. Where differences Year Flood occur and theen what d illustrated actual pre- sence plains maps site conditions, the pre- sence or absence on the site of the sensitive area - as defined in the Sensitive Area Ordinance-is the legal control. 100-Year Roodpiains 7 S Ii - ill . ' '- -1 .* - - -t i .. i . .,,,,7:".--.- - ..__._ !i 1 lir- ; I '1.4.. t 1 ..'-''- '---.:,-'- r17:17415',--e': 3(Iff -- Y ' Z' � it, ! �� hi.-'.'. , z' r t I t 1; 1 .fr--.;.,- I 0,61 , . . __:.,_,.:;,,,:_:,--_.„.. .:„..F3,.,,,i,,._:, ° . _... , „.., ,,,:..., , __ . ,_, . :_,,__...: (........ I _... ,.. „... El !..,-,,,. Ai 1 i i . ! Millangi al im.., n '-,:.,,,,,,,...1 .. _' 4 i •I' - i : '••W 9�11911� ' - it x.� { �� `.3 s'/. _ II y` _ � ] ANZIIII I1,1 • 1 . -� , ,c , iy tit . ' I t 2 i {-4� -. a T'j? :` 1 1 ~ - .__• , ivb. 1/ r1 _-- :i . .i t `y. I ,'•'- ,,_aT�i -i i ,. AV" •} ,4 q f i �i T;si r t r a a _ If r 1 I l!' 4 I t.. I Y. � --] ' - __ '- F . PYj oil 1 �I � � ' C I ti yrL. -,_ f,{ J / fir, • .;- `T v.. ,f, - - ! 1 i-- J ,1, 41-I---t-'-� j I ''al `J r- . L_ • • ''. r• t I L , / llr i - Y.` - 1 f 1a 1i � -, kf _ 4� , \ i` f. i I is .fit •J\ �.� //jlj� I • { ; I ` . - 1 \-/ i' - ._ - \ I • l I I 1 I Ti • , 1 I q ---r ..-.•p•77,- , i \ ; ;,<4 ' may, 1 /\ I : f � ( •;M' _ 4- K f M.r 1. �' ! ' mil `-�'.-.. - L � • t` li r — I { — 6 • {i 111 E, , 1 _ 7� fi ., ] ' f "� The boundaries of the sensitive areas dtS- } r, played on these maps are approximate. - r - ; `+ � �w1 Additional sensitive areas that have not }-�rosion been maPPed may be present on a level- Ell a' and I m opent proposal site. Where differences ��,,,111 occur between what is illustrated on these Areas maps and the site conVitions+the actual pre- sence or absence on the site of the sensitive area - as defined in the Sensitive Area /Ordinance-is the legal control_ - b 11 n .. .., '- : . .. 211*Aiffit's,/,, 1 ' . • (IC .2!....1 • i i 'P Mall, a t l6 es ''r• CISP'n-11 tlia Eprow. re'--:--..---.--., . ,.... . - . , ... . it,- , . e.- - 611:1. 41111 ' t Pr‘1111161, 4 •**;-..' -:- ---- - --'• --ti -- ig -,,,-frii_trt, ,, ........_.. A . _-. -- e N'ila 4 I- vrp ___...,.., mi.. . ;01.‘, , to .‘. ,./ • de./1"" -‘\ • • al%mithi., .. .,. . ii.,- - . ,- • i• 4IM k �v 'f�i`'� 1 ii>17 �..'.;,;<'./-- ... • i 414 Imill'ro, t f . ikeigm ljlifF/41 t_..ff! ,d / - -_ T� __17- i f 1. ,y _ �nid ..,.._ ., `a s,� ram: , _ ,..,.,.., e A ,,ii- t�:- it w. / --j -(--_AI a- _ ` 'Mik� r— F 1 l t •_ tit.-. t IC—f ti\ IT y •-/ r � i5! o • '}' _IJ/ /-- I`.— r-.. }-- }.�3.� i 1 ram- {.: ? t . . --, - 1 1.' t 17--- / r IfII t (` r`� �� I, [`1II/l {may r r pit �r r •" ! i L •i 1 --f-.---n- - - Mill! .11 1.14:i.1 ki_k_.."71'--hi .,-.','..-.-:!--:.?'.;1,i..',.4.-,.....r----t7-'''-- -i. '--3- -t----11---1''''- XX - - _ ! - I '" 1 ifs'•-'�,_ . !4'-1 - • 71 1" • ) 1fie • t7 f , , t , c's �.... i i r am , ; ` • . - - �,_ _ ! . .t me �{er - i--- i- _ } - 1! �! : ( . . -La- . - . , ._. I . I ,`.'� • I_ .l -� ..� VIP• 1: / t 4�•, i I\t _'d'��! a +.-¢¢yy mil. / j I ! • )X ..��vl///" T,1\ - ,� Z � , ,t' .. 04,4_ 7,1 \. _.N / - ll '/ = 1 / ... .' - tiK •i.: _ 111 The boundaries of the sensitive areas die- iJ(.lndslide Hazard Played on these maps are approximate. Additional sensitive areas that have not been mapped may be present on a devel- opment proposal site. Where differences occur between what is illustrated on these maps and the site conditions,the actual pre- sence or absence on the site of the sensitive area as defined in the Sensitive Area Ordinance-is the legal control. i ;: -- '-r."Zi.. ..,:i•--;-,i;..-.- -..1 $1-1.904,01L, - Ai( ------_.-,:--,--...-,-,-.: ,.. '',--:-,-,'' INOPr--'--- , ,•1--,- 1 /'V ER i t F A )" , W, 1`44 t-, if ,lg, i f �I� - ' i , _ i - II _,„...i.k.ri_...°.:-•LnigiQs, iii - ' ` r•-• i ,'fi' : 1. lit ! A '_ ., .. Aril r II ''',• "'"! -:" .' /".. 1- WiggiNii r -4,-gas.t. - i lit: . Mai* - iv.,4__... .--L--- .-... r. -,-;---...., ; .. - : F: ' ,l ""I'IL�� h_.T t-- 1. t J' �..--+i: r J :tarn I 4 1/�, f t 1 J I• h �f-i. ,�\' �� ali n- �'( �� -t, -.1 •z -- ' ' '_.//lam ^ —_ ` � I - / .I' i _LNG-- ' v-� !- 1111 I y D r ii: 1.1 `,.•,„. . •1 rr `C L! - i. C •j ;- 4 fi ,// ! f -_ x-f'•21_4f4-1 11 .. j tl,- c : - 10 _.s®ems i - `! ' ` - " `i� < :`� - u .6 I �T r t \ , - l - I �t 3 1_'t 1L i � +' ! LIB 1 ! 1. + •liJJ J r'L'' iT .. . . / i .. -. . ..t .i..„., f i / i a�.. �� ( -j _ ri i � iI 1,i � ry \ '1. /1• i,• ,. i i . ,'`c v , 'r ' . -''-' '''''''' .. .... . ; : i 'l't,-; -. • -1 »'‘• . -- - _,,, ,.••• _1. 1 , '- . -);------- - I. ..wf .., . . .1 ..-.-_c .-4 0/ , ., 1, ,a--.,.. a .t4 \ � { `' /f .— .. y \ Ka. i '• - The boundaries of the sensitive areas dis- See wetlands and landslide hazard maps for Seismic Hazard played on these maps are approximate. additional potential seismic hazard areas. Additional sensitive areas that have not Wetlands and landslide areas are susceptible i been mapped may be present on a devel- to failure during earthquakes. Other seismic Areas opment proposal site. Where differences hazard areas not shown on this map are N occur between what is illustrated on these shorelines underlain by lacustrine sediments; maps and the site conditions,the actual pre- these are susceptible to liquefaction. sence or absence on the site of the sensitive area - as defined in the Sensitive Area 7a Ordinance-is the legal control_ 4 q r 1 11 4 ( ) /! ' -1 I !I 1 I TI i I 1 , I 1 i T 1 .i EXHIBIT G FEMA MAP i I 4 f * i I * A 4 . i 1 ,. . i i / - j * i 1 9 1� F NATIONAL FLOOD INSURANCE PROGRAM FIRM FLOOD INSURANCE RATE MAP KING COUNTY, WASHINGTON AND INCORPORATED AREAS PANEL 1250 OF 1125 (SEE MAP INDEX FOR PANELS NOT PRINTED) 3 CONTAINS: COMMUNITY NUMBER PANEL SUFFIX FEDERAL WAY.CITY OF 530322 1250 F KING COUNTY. UNINCORPORATED AREAS 530071 1250 F PACIFIC.CITY OF 530086 1250 F ) . 1 ; MAP NUMBER 53033C1250 F MAP REVISED: MAY 16, 1995 i , { Federal Emergency Management Agency ) ( ,�--, .. b � \ 4L —'[I � ``i Ni T I� WEST 1 r 320TH I 117 ,STREET - 1,14.---.., NI / ...L.L.7f1....)._ _:- 116 A IF CITY OF FEDERAL WAY Y ' 530322! 3 11 do Vfrdli a i�11 18 p 17 kok 0 Ilk Ilr IF ZONE X 16 ,► J 41 .41 I I.y'11411111111 Q 1 1 i o I 1 i I i N / l SOUTHWEST � •S Q �w a sr �`� i U 1 MI9FFT ' A , t Panther `' E p I, 24 rake il 1 I 19 20 ti'1 in 2 .r _ a Q SOUTH 348THV STREET i j—t Y . + ZONE X , • /N. } I i r T Brook Lake N f , 1 — o I 1 " 25- _ — �rz / a i lam_ 1 _ i r. 'AIcc 30 r ( Qki 29 i• i 1 I l I ss 'Ij / d11/4 f-Y 1 ‘) ' 1-'---'' 00/0<(, eo —1 II-- (-C Lake % il <<‘,0 61 G /1/) . , \ ----I-7 1 \ a i El ' A i 32 g 4_11 f .1 . SOUTH Creek 3: 376TH p`' O 'STREET d ( kZONE BACCHANT I ( / .._..r.• �r X ,] COURT TI ri 1 11 EXHIBIT H 2 ' DRAINAGE COMPLAINTS I . I , I . 1 I I k ) !I :1 1 1 i .. 1 ;Al EXHIBIT I .1 ) KING COUNTY SOIL SURVEY :1 1 A i ) A i t 1 t. I A i I A 1 1 1 1 il I 1 34!'Sr;ti?, t SOIL SURVEY . , : • . f • ;" King County Area , • Washington ;Pr)'T'Y I, I ) • ;i -1 4 i ‘11)11111 1 UNITED STATES DEPARTMENT OF AGRICULTURE , I Soil Conservation Service in cooperation with WASHINGTON AGRICULTURAL EXPERIMEFiT STATION Issued November 1973 II 3'4 1 ili . •16,•-.. • , I t ..----,„ . ---- ..- f ,.----; 0 •• - - • , „r___ : - f i 5 ----TH AgB •- •• 1 , a . I osk .., ii k c5Sk •(c% AmB . VI I - i 31/54/ LE ba.'-`a-a--• - s . -N--j__--- i ----------______ _________-, .. - • - t 2.--,zi:. 7,-...,-.,., f "- - 'v..-,.,7',;.• .--- ttifi.--/ ' - ,- II AV z . I - =_1'... 'rSrn v., - - -.:,1-1:. - K-1-- ' "lt'y, i i• I Fir--" "--- .. .7:-. , i e : -— 1,1.•:-.. --').- 1:: 4.,---_,kr.,•.,•.-(a.r.' „ttr.,,,,--/4, / /4, r ir „c:.,• ve.-:-IC s , ..-.„.:_t „,.._ --z._ :,- - -__.-.. . __ -In _, 4'..-Y ' •--1 . ' ..-v z.,- -- _ -!-, ' • -- t. -'', :.; -.-' - '';'' ' `;,,, ' .1-.4._` _ __ ____ I 1 /•,-Sm : . -_ -..ftx.tz,.f... _ .-!....-Nt-,_ik._,, --.4:, 7.,-.-•-- ,- -- --....-_:,.....--,47.-:.....- ,.,,.,.•.,.. e ..-;.• •-.....-- X• -a__,,,,...-• 1 - ---_-..' -.,f / f I . . - . '4 . . s:-'4;.-,,,,,,,--- N ::',1'fl.: ..,-;'',' , ' . ' -4•,'"- • ' ; I Aga - - # 1 -. - . — `- •..., -18 ,- V Sk , •• - -- -"Evergreen ,'. ------, - . - - -,:• - . ,, . 0 x. • : 1, _ - ?<A _ ' Vlizi ...:.:-. --- •• Airport -"=" ‘--7-- .../ #:-:',";•• : ,, ., • .„,---:"•-a • .., " . 1-.-1 - - 4,' ,,--_-;,"• AgB V a a ,, Ci.)-Sk / I N,_,___•tile „Arna AgC - N q .-- , ,' "";.' EwC `;''' .... ._•.2_,_ ===4 , .. — , :1 I 1 4 4 f ,f----- g OSk .: .111r: • * * • V _ o * •,* ) - -T ----_-- t:7-- -- -, >>1 --.=:••• • . ' huh I 1 -1? .i i .;-; 1-, ',-•' • .'"-; 1 ...r ,...;_. Eve Ago ,,,,-,;-1 I CI I A-4.-•• l' -,,/- C3Zs ' 1/:-:, '".' : I-- " • ---trir_f:-." -,=--- ..._:, (2./ ,,:ii,r-- i .., 1 .. ..•'... , , as:',,,z.: -- . , t-a ) .. ,... ,-.7-- / - es Kit f•rne'r .. t- - : A . , . .. . 1 . -- , - '-r- .,-=--• I .- - . ,4:•';'-' . -- - .-va 4 :- . -= 10.., I ,-..-- , _______ 1 . 1- .!..2.7.:.- ,_ _ .... . -111 * .EwC " • Ur • •11 : AgC , a :il . S , zsgk room_ ____ — •____ '_ : ' • '• o .: ,n, \ 8,00 411 WA... :.(r • po:- . ... i • Ag 4 X : • A 1 1 ilk:C • ti .‘4.-... _ ' 1. ZO6 '...• t •• —-, .45, — _______ I '-"x I •:.,,. ,; . : , . v 1 • 4'4 . :". . :- : :J:..17101111— ..., • •AgC 7". • i t- / - I • : • 1 \ i '..; - i: :.• l; • N . 1.• • • a C• . -• / : t EvC • ..... 1 KING COUNTY SOIL SURVEY MAP . i i" = 2000' 1 t . i , .. 1 1 VS . i rl 11 GUIDE TO MAPPING UNITS For a full description of a mapping unit, read both the description of the mapping unit and that of the soil r/ series to which the mapping unit belongs. See table 6, page 70, for descriptions of woodland groups. Other • information is given in tables as follows: i I I---)`3 Acreage and extent, table 1, page 9. Town and country planning, table 4, page 57. Engineering uses of the soils, tables 2 and 3, Recreational uses, table 5, page 64. g pages 36 through 55. Estimated yields, table 7, page 79. Woodland t Described Capability unit group Map symbol Mappingunit on page Symbol Page Symbol AgB Alden+ood gravelly sandy loam, 0 to 6 percent slopes 10 IVe-2 76 3d2 ri AgC Alderwood gravelly sandy loam, 6 to 15 percent slopes 8 IVe-2 76 3d1 AgD Aide/wood gravelly sandy loam, 15 to 30 percent slopes 10 VIe-2 78 3d1 _ 1 AkF Alderwood and Kitsap soils, very steep IO VIIe-1 78 2d1 AmB Arents, Alderwood material, 0 to 6 percent slopes 1/ 10 IVe-2 76 3d2 ti AmC Arents, Alderwood material, 6 to 15 percent slopes 1/ 10 IVe-2 76 3d2 An Arents, Everett material 1/ 11 IVs-1 77 3f3 i BeC Beausite gravelly sandy loam, 6 to 1S percent slopes 11 IVe-2 76 3d2 BeD Beausite gravelly sandy loam, 15 to 30 percent slopes 12 VIe-2 78 MI BeF Beausite gravelly sandy loam, 40 to 75 percent slopes 12 VIIe-1 78 3d1 Bh Bellingham silt loam 12 IIIw-2 76 3w2 1 Br Briscot silt loam 13 IIw-2 7$ 3w1 Bu Buckley silt loam 13 IIIw-2 76 4w1 Cb Coastal beaches 14 VIIIw-1 78 ri Ea Earlmont silt loam 14 IIw-2 75 3w2 y1 Ed Edgewick fine sandy loam 15 IIIw-1 75 2o1 EvB Everett gravelly sandy loam, 0 to 5 percent slopes I5 IVs-1 77 3f3 EvC Everett gravelly sandy loam, 5 to 15 percent slopes 16 VIs-1 78 3f3 EvD Everett gravelly sandy loam, 15 to 30 percent slopes 16 Vle-1 77 3f2 EwC 'Everett-Alderwood gravelly sandy loamy, 6 to 1S percent slopes ` 16 VIs-1 78 3f3 InA Indianola loamy fine sand, 0 to 4 percent slopes 17 IVs-2 77 4s3 1 InC Indianola loamy fine sand, 4 to 15 percent slopes 16 IVs-2 77 4s3 . 1 InD Indianola loamy fine sand, 15 to 30 percent slopes 17 VIe-1 76 4s2 KpB Kitsap silt loam, 2 to 8 percent slopes 17 IIIe-1 75 2d2 KpC Kitsap silt loam, 8 to 15 percent slopes 18 IVe-1 76 ?d2 KpD Kitsap silt loam, 15 to 30 percent slopes 18 VIe-2 78 2d1 1 KsC Klaus gravelly loamy sand, 6 to 1S percent slopes 18 VIs-1 78 3f1 Ma Mixed alluvial land 18 VIw-2 78 201 ' ` NeC Neilton very gravelly loamy sand, 2 to 1S percent slopes 19 VIs-1 78 3f3 Ng Newberg silt loam 19 IIw-1 74 201 1 Nk Nooksack silt loam 20 IIw-1 74 201 No Norma sandy loam 20 IIIw-3 76 3w2 ,4 Or Orcas peat 21 VIIIw-1 78 --- Os Oridia silt loam 21 IIw-2 75 3w1 i OvC Ovall-gravelly loam, 0 to 15 percent slopes 22 IVe-2 76 3d1 . 1 i OvD Ovall gravelly loam, IS to 25 percent slopes 23 VIe-2 78 3431 OvF Ovall gravelly loam, 40 to 75 percent slopes 23 VIIe-1 78 3d1 Pc Pilchuck loamy fine sand 23 VIw-1 78 2s1 11 Pk Pilchuck fine sandy loam 23 IVw-1 76 2s1 Pu Puget silty clay loam 24 IIIw-2 76 3w2 Py Puyallup fine sandy loam 24 IIw-1 74 2o1 RaC Ragnar fine sandy loam, 6 to 15 percent slopes 25 IVe-3 77 4s1 RaD Ragnar fine sandy loam, 15 to 25 percent slopes 26 VIe-2 78 4s1 RdC Ragnar-Indianola association, sloping: 1/ 26 -- --- al Ragnar soil- IVe-3 77 4s1 Indianola soil --- IVs-2 77 4s3 RdE Ragnar-Indianola association, moderately steep: 1/ 26 -- --- T Ragnar soil VIe-2 78 - 4s1 Indianola soil VIe-1 77 4s2 . U. S. GOVERNMENT PRINTING OFFICE;1993 0-468-2 , , % Ti GUIDE TO MAPPING UNITS--Continued Woodland M Described Capability unit group on symbol Mapping unit page Symbol Page Symbol F Re Renton silt loam 26 IIIw-1 75 Rh Riverwash 3w1 27 VIIIw-1 78 --- ii Sa Salal silt loam 27 IIw-1 74 2o1 Sh Sammamish silt loam 27 IIw-2 75 3w1 Sk Seattle muck- 28 IIw-3 75 __ Sm Shaicar muck 29 IIw-3 75 i Sn Si silt loam 29 IIw-1 74 201 So Snohomish silt loam- 3 IIw-2 75 3w2 3w2 Sr Snohomish silt loam, thick surface variant T1 Su Sultan silt loam 311 IIw-2 74 3w2 Tu Tukwila muck 31 IIw-1 74 3w1 Ur Urban land 32 IIw-3 75 -_ Wo Woodinville silt loam 33 -- -_- 33 IIw-2 75 3w2 i 1/ The composition of these units is more variable than that of the others in the Area, but it has been controlled well enough to interpret for the expected use of the soils. • li a a r t Ji 4 1 I i 1 ie l i i i i , i 3 � i IV. FLOW CONTROL AND WATER QUALITY FACILITY ANALYSIS AND DESIGN 88 INTRODUCTION/GENERAL INFORMATION The proposed Maplewood Office Building project consists of construction of a new office building, as well as associated parking, grading, drainage, and utility improvements. The project site is located in the northwest corner of the intersection of South 340th Street and 1st Way South, Federal Way, a portion of the Northwest quarter of the Section 20, Township 21 North, Range 4 East, Willamette Meridian, King County,Washington. The area to be developed is approximately 2.08 acres. The site is currently partially developed with an existing building slab, utilities, and storm drainage installed under a previous permit. The site is generally flat following grading and clearing under the previous permit and currently consists primarily of compacted fill with grass cover. The site slopes generally from the north corner to the south corner, which is located at the intersection of 1st Way South and South 340th Street. An existing storm drainage system conveys on-site runoff to the storm drainage system in South 340th Street, which continues to convey storm drainage toward 1st Way South where it is conveyed to the south,eventually reaching West Hylebos Creek. An area of approximately 300 feet long due west of the subject property consists of trees and thick underbrush that drains onto the project site. An existing apartment complex to the west contains parking lots that drain into the tree area, which ultimately sheetflows onto the subject site. This drainage is relatively minor since it flows through the forested areas. An existing catch basin in the north corner of the site picks up any upstream drainage and bypasses it to the east past the site onto 1st Way South. A complete Downstream Drainage Analysis can be found in Section 3 of this report. 89 EXISTING SITE HYDROLOGY The existing conditions at the site consist of a concrete building slab that has storm drainage and utilities stubbed to it, which was constructed under a previous permit. Approximately one-half acre of the site is impervious, and the area around the building slab has been graded and compacted, and contained a grass cover. The site is very flat around the existing building pad and slopes generally from the north corner to the south corner at slopes ranging between 1 percent and 5 percent. The site drops off quickly at approximately 3:1 slopes toward South 340th Street and 1st Way South at the project property lines. Please refer to the existing conditions exhibit in Section II of this report for site area and existing flow paths. Drainage from most of the site is collected in a storm drainage system containing three catch basins and a 12-inch storm drainage pipe that conveys the flow to a catch basin located in the south corner of the site. From here, the drainage is conveyed into the 15-inch storm drainage system located in South 340th Street. Flows from a small portion of the northeast corner of the site appear to sheetflow to the east toward 1st Way South and would be collected in the storm drainage system of 1st Way South. This existing storm drainage system will be removed and replaced by a pipe conveyance system redesigned to fit the proposed site plan. Please refer to Existing Condition Hydrographs located in this section for further information and existing flows. 90 DEVELOPED SITE HYDROLOGY Storm drainage will generally sheetflow from west to east across the parking lot and be collected in a series of new catch basins and a pipe conveyance system that will convey the runoff to a biofiltration swale and stormfilter vault in combination located along the southern property line of the site. This bioswale and stormfilter vault will discharge to the existing catch basin and conveyance system in South 340th Street. Roof drainage will be conveyed to the proposed on-site storm drainage system and routed through the bioswale and stormfilter vault. Approximately 2,000 square feet of area in the northeast corner of the site apparently drains to an existing catch basin that conveys it north and east to the conveyance system in 1st Way South. This area will be conveyed to the water quality and detention system following development. To compensate, an area of approximately 2,000 square feet directly north of the building will be allowed to sheetflow to the existing system. Please refer to Developed Conditions Drainage Area Map and Developed Condition Hydrographs later in this section for additional information. 91 HYDROLOGIC ANALYSIS As stated in section II of this report,detention is not required at this project site. Water quality improvements will be provided by a biofiltration swale and stormfilter vault in combination. The water quality facilities will be designed to treat 60 percent of the 2-yr/24-hour design storm event as required by the 1998 King County, Washington Surface Water Design Manual. All surface drainage in excess of 60 percent of the 2-year/24-hour design storm will be conveyed successfully through the biofiltration swale and stormfilter vault. The bioswale has sufficient capacity to convey the 100-year storm event. The 6-by 12-foot stormfilter vault designed by Stormwater Management, Inc.,has the ability to bypass up to 1 to 8 cfs through the stormfilter vault without requiring a high flow bypass during storm events larger than the water quality flow rate. The stormfilter vault will require nine cartridges filled with Perlite media in order to achieve the desired water quality. Please see the stormfilter cross-sections in the following water quality calculations section of the report. RETENTION/DETENTION SYSTEM As stated in section II of this report,detention is not required at this project site. 92 t I WATER QUALITY CALCULATIONS 1 1 a3 i t "�"'�'''`°"""�'' t;, - I01I f JEB°PHONE DEVELOPED CONDITIONS B N P E%- GB;; 1 \ 'tiX I1 t RIM=308.56 DEVELOPED AREA CALCULATIONS II 1 , _� /_ K ex_� II E=3o4,�s S1s" IMPERVIOUS 77,129 s.f.= 1.77 Ac. IE=304.3 5' E '�3,• - y' .r== - PAVEMENT A/C& CONC PGIS ;{ 1- �t - _`>�,t >s _ -><' _- } II ( ) 55,454 s f= 1 27 Ac i Ai� ___`- n-- � _, _____ _. BIOSWALE NPGIS 3,965sf= 009Ac ff %11 j b = -_a C ?p '�- c �� BUILDINGS(BYPASS W Q) NPGIS 17,710 s f= 41 Ac • t. i i, ...„.„ ( I f� ` =_ _- ^� t - 0- • - --• -• >` • Ma a TOTAL IMPERVIOUS TO SWALE A A __ _ «' ^� :=_3' _. _ :<r .,e,�, EEO Np' 11 J ''+!e yLy3r 59,419 s f= 1 36 Ac EX. WATE V LVE 'r`s..rx- _ -"7-L -� ��; � f4 16.10. OO71R�,r - ES Pq f . r __. �_�_160 ,,rii $t,' is `;_'('-`_ •I v <,*1�'s< PERVIOUS NPGIS 13,339 s.f.= .31 Ac. (TYP OF ) {t _ ._• `/' , .- >i 3 L 11�" 'ts 1 i �•r x, '+' j, uiiTE1 Q.) NPGIS 31 Acffear _r / r -� yt�q1 67 AcIlu FH : + dc 4. r. } 90,48s.f.=EX CONC SIDEWALK f" E 3.�x'; • .. + ': } 1d. W . E B LIT 1, �_ �, _ '�' , ,� Alp RIM=299 20 ' . if ,?Y kw:. �!! �' '{ , -_ "`'` 5-'di L. �'_° - .""„ IE=29500(12 5) A- sprit i,. .:.. .. , ..: ...•'^.A.', r, "';.;:.iiio."'..^. : .4 IE 294.60 t 1 .. ...:. .:r. .. Y ,let_ \ ) 1+ xf II T� 1 7 I :..>..: Ilw I --r >c> »,. ...; ,:..>:.>.:.: :... WATER ,..,,.. 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Fx K 'X x `>ix - V•� 1 may; P ` A {1:.;> :.::::::: ;<, ,� :.c A ,.x � ,4 I;‹z. / .,; „ .• ; �'x, EXISTING j! ,� Y.:.:,..: ! syk �: T7 ..r, r MOM BUILDING n A .td:'[r"I.>>':'::::;::(:wj7:r:^ 'C�- b. " f c, g j d tr MEW 1 I i / :-,a. - < 77j[ ` ,� ▪ _ .11 RR IEC�.N10001100 r9, I. I f � • 4 f• -I ..• ,,,::. :•4 i O 10 E moms : , . i ;+ s I/4' i - , e^i•:: I = C77 RIM=300.83 j ii>l Pil :: j4 SAW F fll r M% "' n n s IE=297.13 112" N) 4 .5)4iiiii(+:3 1' t, OkUCN EX.CMS 7. r N i ,s�, 7s i - =226 97 t ' SE) rz•s[::n t x '£::.'.:_c,''::`Y N / ' I �I p _ �. ... .. 1 f i 729-fr..\i..„,,, �,-'.r,,,,,_ FlNISH F�B� . ,�'tCtt7i1 .'.''':1 `1! gftt t 11 1 I t ; ... 21� '0:-,7 '- -, ..___.-..-._--.._ CONCRETE ��\ a«tts j 11 tf1 Ir, I� �: ¢ • ;a • '. ;:Y ski = 302 5a i sw) 33 y,.s, -a�R u_ i a:.-.::.:.::i }NL-_• R • N` if A "wit' s c0lllan - I + if IG is If f i : . ° � ______it ten o It '16 I _ 7aG.sH^1 iN ._ . Q A i r [j R1�.iA�M kct4 1`e • -) -ti a e J). J�i[F . . I ttkiiw»itttrox it Y�. FF. �R� I •Lr Y. i 'i�tinnt4t 1 •- r 1 AL WATER x 0 I A t3 ;+i " II"J` a � },n ib: OF NATIVE 7ByRL �� ' oa I7xa,:.7'i •'t 111.,�: , 1 1I N NRTJcy�r ;oD Ss 1 e :: KKi E 3'3 lit:,.... u tom'"�i":':..'j !� '� E%. WATER R f ' pl r/r• N / _ py rlgK i �r11ATBW_ T@�AL� I ssn- a<.: �1 VALVE tt EX SDMH 1 I �> ,.' > r>~ . #A7-£ i5(' ' 7 t�yf r I tF -R%`f. , ELM=3001M' ..I Imoil ` ' __ t EX FIRE PROTECTION t t 41•7 R : >'- $3c;:.4y -c^_i:s;etet • ;;* e `�1 -s tX a -� SERVICE VALVE IE=293.32 1 NW d' -- •> - 1( ) { I. 'r+ _ _ ~, r �• f [I« •.. ,� r 't 111 I t ; d7`a. . ->_..„ EX HYDRANT IE=294.8�(1 NE) it X i._htt ti`..-z, x tc N� •IE=294.73( '"5) (1 PI•E ' 8" �.! N S. 75L'w�G l'r mi� W�� 3 { i___ ` EX CB IE=298.9 I r` 4 �. s ..ar ~''\? b } RIM=301.23 VERT} N _ . ��..,�� a�'M a #[# !" t :1 1 I? a ._Y:r. .. :, .a'�.�-+��_ .a-�,.,v».o '?3:. iuii .�...sn :; j::,:>:. t =296.90 15" W EX. CB.TYPE A f I A , - -_ - �_ _ »�.,: - _ �. .. �t-c'{; _ 15" N3 p ... r.: � •', � �.«r�...: :,�.i� .!�` `; +t 9.,6-c• � IE 296 92 RIM= ,7 A : 'W'�i,,GGee,, :'Mr•r.`'1'::" /.;i�+:: '6 DWT. i «' .,e-+,i Ex. CB 4 C - ..•. <.. ..w RIM=301.2 e6.ze(1� ) , �. AN �r ice:=�'..'';:' `t' s. ...,''+•'`:'.:`.. i IE296 - •i•Y'W IE=286.28(16 ' ) :f N. . - . A _ t . t n• .. _ i7:! .. - \ '�,�, 7 _.•:. G s ,Lt ` *, • ,, Z>:'.:,.. - .'y�1�"`.r- '.h� _ .-lE=`296.72 i Y ti 1 .• ..�... .. I r N 1s<. t r • .. , • :gym • RIM-290.7 II `^^•^'••...>_, :` "°'"ro.: y I t ....._,.._•.�. ...:..:.. .. : ;.:,>'....... • • _ ors oo 6 W �- 287 ..7, 5 EX. Si�Ff ,Y 6 N d te,.< ,. y > 1 'TX »f:7 8 II I a . \ � U� aIt Ex. Ffnc e' r,. \ :'�� > w„ t��`'r. `- . .:...<.. n POLE �i " ,Ca. - j u\\ 0 's�• .�y rt�-_ -_ ,es �'Y.e ` • ".;.: 4 scS„ - t a N - �ax� ?' - ``1 , �_C`.= �C.r, - "" �;r .• 4,b_ii_ ±,5 , rf.:__ 4r`=V✓'b___ � _ - _ 2`I1 X0W W t:;ty., Ex. RAILROAD { C''r� a7:. A' _ - k. OAD TI __ 11C Ie :,.`L� w,. 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SIDEWALK 1 KCRTS Command CREATE a new Time Series Production of Runoff Time Series Project Location : Sea-Tac Computing Series : 11301-1-WQ.tsf Regional Scale Factor : 1 .00 Data Type : Reduced Creating Hourly Time Series File Loading Time Series File:C:\KC_SWDM\KC_DATA\STTG60R.rnf Till Grass 0.31 acres • Loading Time Series File:C: \KC_SWDM\KC_DATA\STEI60R.rnf Impervious 1.77 acres • Total Area : 2.08 acres Peak Discharge: 0.902 CFS at 6:00 on Jan 9 in Year 8 Storing Time Series File:11301-1-WQ.tsf Time Series Computed KCRTS Command Enter the Analysis TOOLS Module Analysis Tools Command Compute PEAKS and Flow Frequencies Loading Stage/Discharge curve:11301-1-wq.tsf • Flow Frequency Analysis Time Series File:11301-1-wq.tsf Project Location:Sea-Tac Frequencies & Peaks saved to File:11301-1-WQ.pks • Analysis Tools Command RETURN to Previous Menu • z KCRTS Command eXit KCRTS Program cr,-- 11301-1-WQ.pks Flow Frequency Analysis Time Series File:11301-1-wq.tsf Project Location:Sea-Tac ---Annual Peak Flow Rates--- Flow Frequency Analysis Flow Rate Rank Time of Peak - - Peaks - - Rank Return Prob (CFS) 0.457 6 2/09/01 2:00 0.902 1 100.00CFS) d 0.990 0.392 8 1/05/02 16:00 0.650 2 25.00 0.960 0.550 3 12/08/02 18:00 0.550 3 10.00 0.900 0.447 7 8/26/04 2:00 0.532 4 5.00 0.800 0.532 4 10/28/04 16:00 0.487 5 3.00 0.667 0.487 5 1/18/06 16:00 0, as1 6 2.00 0.500 0.650 2 10/26/06 0:00 0.447 7 1.30 0.231 0.902 1 1/09/08 6:00 0.392 8 1.10 0.091 Computed Peaks 0.818 50.00 0.980 C„q ‘0 , (atya ) (61- O)(0•457) O- Z74Z CFS Page 1 F �b SIZE BIOFILTER SWALE per 1998 King County Surface Water Design Manual STEP 1 Design Flows TREATMENT DESIGN STORM EVENT Water Quality Design Storm 60% of 2 Year 24 Hour Storm Design Storm Peak Flow 0.27 cfs Conveyance Design Storm 25 Year 24 Hour Storm Conveyance Design Flow 0.65 cfs STEP 2 Calculate Swale Bottom Width b _ Q X n Flow(Q) 0.270 cfs 1.4 9x y x Slope(S) 1.5% (btm slope for bioswale design) Mannings n 0.20 (for shallow flow conditions) depth(y) 0.17 ft. Choose: 0.17-feet in commercial or landscape areas or 0.33-feet in rural areas or along roadsides width(b)= 5.67 ft. Note: OK,See Below OK, Go to Step 3 STEP 3 Determine Design Flow Velocity Side slope(Z) 3 Horiz.To 1 Vertical Cross Area(A) 1.05 sf A =by+Zy 2 Velocity(V) 0.257 fps Q Note: OK, Go to Step 4 V = A STEP 4 Calculate Swale Length Design Hydraulic Residence Time=9min. (540 sec) Length(L) 138.73 ft L =540 x V Note: OK, Go to Step 5 STEP 5 Adjust to Fit Site Top width (Wtop) 6.69 ft Top Area(Atop) 928.40 square feet Adjusted width(b adj) 8 ft Adjusted length (L adj) 116.05 ft STEP 6 Provide Conveyance Capacity Mannings(n capacity) 0.27 *For Constructed Channel,earth,straight,uniform depth(y-100) 0.28 ft depth+ 1'F.B. (D des) 1.28 ft Area(A-100) 2.48 sf Check: velocity(V-100) 0.262 fps Note: OK BIOFILTER DESIGN: 116' L x 8' W x 1.3' D @ 1.5% 97 6.3.1 BASIC BIOFILTRATION SWALES--DESIGN CRITERIA IFIGURE 6.3.1.A BIOFILTRATION SWALE SCHEMATIC IE.& 29y.17 j , t>j� maintenance access road �` ,Nt Inlet / (modular grid pavement Y ` 1 porous pavement, asphalt, o concrete or gravel)for i vehicle access . 1(j1 �1111. • ViV ti U flow spreader b� g / ry�l►.�II� • IIb Lx S'k1 x 1.3D 111 ► tF @t51 %u unit J, tI,v,, mid-swale I'� ' 6� flow spreader ► 1!1, 1!jI, roadway length depends on (recommended) ` . '� I'd swale area(see text) biofiltration swalP bottom 1►\1 AI s 114 ' k�` )�►% ` 3: 1 S►d e Slope. T !,1!. !;, yP` l.\l►\1%1\ 11.f; 1►,, 1 ; , " ; ;:0 -'Outlet NOTE: Longitudinal slope 1-6%. PLAN Provide underdrain for slopes< 1.5%. NTS IE = Zg2. y3 e • 1998 Surface Water Design Manual 6-49 9/1/98 qA SECTION 6.3 BIOFILTRAT ION FACILITY DESIGNS FIGURE 6.3.1.B BIOFILTRATION SWALE CROSS-SECTIONS swale divider for width>10 ft water quality design depth (Y) = 047 Y+1 2"compost tilled into bottom width=g 6"native soil TYPICAL SWALE SECTION NTS 99 SECTION III FIGURE III-2. RAINFALL REGIONS AND SCALE FACTORS ST1. ST 1.0/ • 0 LA 0.8 LA 0.9 LA 1.0 ENONO ST 1.1 � �� LA 1.2 NI•N COUNTY t� �� ,ifiAle� L :�• - KIN•COUNTY- '..-ii:-, •',---4-',.400 FA p.- 1'iir.,--,',,1 r �-7 p W1 :,;",.-..-,,,.:J.-:;;::,;.1409yeer,--ioold r iz-',-,c,:,....!qdp- pyrrAd "‘.441ri-- il -,,, .. .. ; . „„, : . 494140,47,, ---i7'., :i7sypip . 0 '. _ 1,1-100. ',,...:.,.....: ::., .._..,5.- , .:;-.,, : ' - 1,-,,--_,-,----_,J-„,--,:-2',', ,,,,-44/4,:tr.-i! .di _.,-'1•41.-':'''''? 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'` ki •4t ^d;{ c:N+^•1� �'�A tl, , ;:4 -.} �, �t.C? :'.:;:. :tee,': aatm—:, �21• .,— t �� ,iO ff;:•-`;'`cc ,,..4-1F--I TVANiN'ii441:44,0initniikt:k; ` � y `8' e Sv6 + s F01 AP, , - --- ----"frfr • -*',.6-1:,,44,11.4• r. ..w.r....:,-,4. .44.1„,„4,4.N.N..,6.i.!4.1.te.:1;‘,: mini*"...,.....N-st..; v:>.,:-...r.A:$,,.....5z.:,,,',.,, •.;:..„.L,,... �/,iFi-f DS7I1R f, ,. tt.,:-114,:: , 1,i3O 4,, ."-.;V,',.. --c5,,,,,,!,-,-,'„. ..7,,,'4.'s,,,:'V'4-,..-vi;,51.<i,-- Ii.,-.4..",.k..1, r,,,,,4 L, „ ,t,,.. .„,, ,,,,,,,... ,,,,,... ., ,, ,.,., . � _ ,.[•- � ir �. rot'.:�sy,,','�-i.� w �-. }x a.�` �y j>LA r 1. y , ej ....,4„.„4: (1.1:0 mili.L.,,. w.t.,.:c;-.A,N04:44,00,,gt:,.,, 1,� 40.' /) p�n,4 �5`a�gip,':1 '_ Y`4 ''L.-`�.u,N/ sT - r, 4 -�, l LTA} 5 ` ''i V''',li,,,, er:r4,'•''4 ezeo. j \.-V. . 4.4711',,,:,f,. .-'.‘,„'7:.:-'jt.e'ie-'''L.-I,f-,Vg'!„'':'''„.,:;':-li::L;rt.':'t:"-laaL . STPIERCE COUNTY 1 O ST 1.0 s Rainfall Regions and ST 1.0/ s/ r ,S , LAi.,..5 "�#sue% t �_ • /s vY Regional Scale Factors ' `� z LAB 4�' G Incorporated Area LA 1.0 • LA 1.2 —es River/Lake Major Road III-4 top KC/ITS User's Guide December 15, 1995 f 00 g � 1t \" COME RAIN, WE SHINE:" STORMWATER MANAGEMENT INC. ,i Maplewood Office Building - Stormwater Treatment System Size and Cost Estimate Federal Way, Washington Information provided: • Total contributing area = 1.77 acres • Impervious area = 0.31 acres • Presiding agency= City of Federal Way, Washington Assumptions: • Media = Perlite cartridges • Drop required from inlet to outlet= 2.3' minimum • Size and cost estimates: The StormFilter is a flow-based system, and therefore, is sized by calculating the peak water quality flow rate associated with the design storm.The water quality flow rate was calculated by the design engineer. The StormFilter for this site was sized based on a treatment flow rate of 0.2742 cfs. To accommodate this flow rate,Stormwater Management recommends using a 6'x 12' precast StormFilter with 9 cartridges. The estimated cost of this system is$23,000,complete and delivered to the job site. This estimate assumes that the vault is less than 10'feet deep. The final system cost will depend on the actual depth of the units and whether extras like doors rather than castings are specified. The contractor is responsible for setting the StormFilter vault and all external plumbing. Typically, we recommend annual maintenance for the StormFilter treatment system, but the maintenance cycle will ultimately depend on the rainfall conditions and actual pollutant loading. If contracted with Stormwater Management Inc.,the estimate maintenance cost for the system is$1,200 per cycle. The precast StormFilter has an internal bypass capacity of 1.8 cfs. If the peak discharge off the site is expected to exceed that rate, we recommend placing a high-flow bypass upstream of the StormFilter system. Stormwater Management could provide our high-flow bypass,the StormGate, which provides a combination weir-orifice control structure to limit the flow to the StormFilter,for ap proximately$3,500. The final cost would depend on the actual depth and size of the unit. r • ` i SMI ENGR:TEM 4/26/04 1 g f COME RAIN, WE SHINE:" (sToRPóWAT€R MANAGEMENT INC. TO: FROM: Brian Kaul Tara Michie, EIT COMPANY: PAGES: Barghausen Consulting Engineers, Inc. 2 EMAIL: DATE: bkaul@barghausen.com April 26,2004 PHONE: 11 TIME: (425)251-6222 11:04 AM RE: CC: Maplewood Office Building Project size and Michael Macnoskey,SMI Regional cost estimate Manager I0 FOR APPROVAL 0 FOR REVIEW AND COMMENT ❑FOR YOUR USE OAS REQUESTED f COMMENTS: In accordance with your request for information, we are pleased to submit the following size and cost estimate for the proposed stormwater treatment system for the Maplewood Office Building project in Federal Way,Washington. 1 The Stormwater Management StormFilter@ is a passive siphon-actuated, flow-through, stormwater filtration system consisting of a structure that houses rechargeable, media-filled filter cartridges. The StormFilter works by passing stormwater through the media-filled cartridges,which trap particulates and adsorb pollutants such as dissolved metals, nutrients, and hydrocarbons. The design of the StormFilter assumes that system maintenance will be performed at regular intervals. Stormwater Management Inc. can be contracted to perform the maintenance or can work directly with owners who wish to perform their own maintenance. The estimated cost for contracting maintenance with SMI is attached. Please contact us for more information about maintenance options. The size and cost estimate is based on information provided by Barghausen Consulting Engineers, Inc. and is not a formal quote. A formal quote can be provided once final plans have been provided. Thank you for the opportunity to provide you with this information. If the StormFilter seems like an appropriate solution for your site, please email us or visit our website at www.stormwaterinc.com to download AutoCad drawings or PDF files for inclusion on your plans. Please let us know if there is any additional information or design support we can provide. We look forward to working with you on this project. STORMWATER MANAGEMENT, INC • 12021-B NE AIRPORT WAY. PORTLAND, OR 97220 LL PHONE: 800/548-4667 • FAX: 800/561-1271 • STORMWATERINC.COM 1og 05/24/2004 15:02 5032583190 STORMWATER MANAGEMEN PAGE 01 fifit ;Ift nos It FA XSTORMWATER MANAGEMENT INC. 1 TO: FROM: ' Brian Kaul Matt Stiller COMPANY: PAGES: Barghausen Consulting Eng.,Inc. 3 FAX: DATE: 425-251-8782 �4/2004 PHONE: TIME: 425-656-7403 3:02 PM RE: CC: Service agreement ❑FOR APPROVAL 0 FOR REVIEW AND COMMENT U FOR YOUR USE 0 AS REQUESTED w' w COMMENTS: StormFilter owner, The StormFilter located on your property was purchased because it made the most sense both financially and environmentally. Stormwater Management, Inc. wants to help you not only protect your investment, but also the environment. We offer an array of maintenance services that can be tailored to meet your specific need:;. As with any filter, the StormFilter has a finite pollution loading capacity. Regular maintenance is required to keep the StormFilter functioning at a level designed to meet the regulatory requirements for stormwater discharge. Typically, the StormFilter maintenance cycle is annual, but can be extended if your property is kept clean through parking lot sweeping, etc. Please review the site and owner information listed on the attached agreement. After revising or providing any missing information, please sign the agreement and fax it back to our office at 503 258 3190. You can contact me with any questions at the numbers listed below. Thank you, Matt Stiller Director of Operations Stormwater Management Inc. ° STORMWATER MANAGEMENT. INC • 12021-B NE AIRPORT WAY. PORTLAN ).OR 97220 PHONE: 800/548-4667 • FAX: 800/561-1271 • STORMWATERtNC.COM Io3 05/24/2004 15:02 5032583190 STORMWATER MANAGEMEN IPAGE 0? r - 3 .r. Service COME RAIN,WE SHINE. isnotifovArtii- Agreement 14A14710.0 M_Nt 12021-9 NE Airport Way t!nrnaad,OR 9722a sett Reelect Mom Time Tt S00.548.4667 Fr E00.561.1271 Maplewood Office Building 'From:5/24/2004 To: 5/24/2007 Owner: perrhet Nlaac Phew rem S Ate; treder�tt'a taeatilleMios_fc u�.en t I 1 Sweet!Mniaat Addreir: IPe Addrese: aortal rewriter! Wok Stec Csrtrldaett MedrsType; Mantel Mderteatweeraamate+e 5100.01 ^ 6x12 9 Perlite 1,210.00 Total Estimated Maintenance Cost: $1,210.00 -See rwe to Air ioforrep ton resumding price itterOneq. dices provided by Stormwater Management Inc: .1 1.Mid-season inspection:test/evaluate the filter media for hazardous constituents.(regional composite annually) 2.evaluate the condition of mechanical filter components. • 3.Remove and replace exhausted cartridges and remove accumulated sediment from the vault as necessary. 1 4.Notify regulatory agency and owner,via written confirmation,that maintenance has been preformed. as-vices not provided by Stormwater Management,Inc: 1.Maintenance of other stormwater treatment devices or appurtenances,except as noted in Attachment A if applicable. NOTE:the owner is encouraged to maintain these facilities as needed. v • The services to he preformed and the related charges have been based upon the assumption of'unrestricted access,reasonable s•zlimentation loading,dry conditions,non-hazardous materials and no inappropriate discharges.Work arising from the presence of regulated materials in r xcess of permitted levels will be billed as extra services. Regulated materials include but arc not limited to:Pesticides,Herbicides, Insecticides,Solvent•;,Fuels, Strong Acids or Bases,Free Oils and/or Greases.Maintenance services will be performed during the dry months(typically July through Septemb.x).This contract must be signed and returned no later than May 31st to guarantee maintenance in the current calendar year.Price not to exceed estimate without prior approval from owner. This agreement is subject to and includes the Service Agreement Terns and Conditions printed on the reverse side of this Meet this section to be a ed cptlpteted by owner of Mrthoriad rtaMatiw: Silc Site Phone Th18 Is a legally binding contract.Stormwater Management,Inc.agrees to provide and Customer Agrees to accept the speeilied services. CUSTOMER STORMWATER MA'AGEMENT,INC. Tuk Aepttlentrtlaex Sipnetem Neno(plow rr(m) Date '— �.. Authorized Slgeatrne Dote 1 o 05/24/2004 15:02 5032583190 STORMWATER MANAGEMEN PAGE 03 SERVICE AGREEMENT TERMS AND CONDITIONS . Period of Service: Stormwater Management, Inc. (SMI)will commence work within the standard maintenance cycle outlined y the executed Agreement and will proceed with said work in a diligent manner until completion. SMI will iot be responsible for elays caused by factors beyond SMI's control and will not be responsible for delays caused by factors which could not reasonably have been foreseen at the time this Agreement was executed. J. Term of Agreement: The term of Agreement shalt be automatically renewed for like terms thereafter unless either party gives written notice 60 days prior to date of termination via certified mail. Upon termination of agreement, any outstanding 'nvoices and/or unbilted balances for services actually performed will be immediately due and payable. . Terms of Payment: Fees for Services will be billed upon completion of work performed. if OWNER to anyinvoice ym Po Pobjects submitted by SMI, OWNER shall so advise SMI in writing, giving reasons therefore, within fourteen des of the date on said rnvoice. If OWNER fails to make any payment due SMI for services and expenses within thirty days of ttie date on the invoice, the amounts not paid will be considered past due. A delinquency charge of 1-1/2% per month shall be added to the past due amount, and in addition, SMi may suspend services under this Agreement without liability for delay or for ,.onsequential or other damages which may result there from, upon delivery of written notice of its Intention thereof. if invoices remain outstanding past sixty days, SMI shall pursue legal and equitable means to collect the outstanding balance. OWNER agrees to pay all reasonable attomey's fees, court costs and collection fees incurred by SMI in the collection thereof. 4. Changes and Cost increases: SMI may adjust the price occasionally to reflect increases in the consumer price index. It is possible that increases in the cost of media disposal may also require an adjustment to the price. Increases that are not related to an increase in the consumer price index, such as disposal costs,are subject to the approval of the custmer. 5. Payments in Event of Termination; In the event this Agreement is terminated, SMI will be compensated for services performed under this Agreement to the date of termination in accordance with the above Term of Ag+eement and Terms of Payment provisions. If this Agreement is terminated by OWNER, SMI will also be compensated for all reasonable costs and expenses incurred to assemble and close project files and records. 6. Standard of Performance: SMI shall perform its services In accordance with generally acceptod standards presently maintained by other practicing professionals engaged in the same type of work in the general location of'he Project. SMI makes no other warranty,expressed or implied. 7. Limitation of Liability. Any and all liability,claim for damages, cost of defense, or expenses to be levied against SMI will be limited to a sum not to exceed Ten Thousand Dollars ($10,000.00)or the amount of its fee, whichever s lesser, on account of any injury or damage to persons or property or arising out of any error,omission or professional negligence. 8. Attorney's Fees and Expenses: In the event suit or action is instituted to enforce any of the terms or conditions of this Agreement,the losing party shall pay to the prevailing party, in addition to the costs and disbursements allowed by statutes, such sum as the court may adjudge reasonable as attomey's fees in such suit or action,in both trial court and appellate courts. 9. Waiver: No waiver of a breach of any covenant, term or condition of this Agreement shall be a waiver of any other or subsequent breach of the same or any other covenant,term or condition or a waiver of the covenant, tem!or condition itself. 10. Controlling Law, Jurisdiction and Venue: The laws of the State of Oregon shall govern this Agreement. Jurisdiction anc venue of any dispute hereunder shall be in Multnomah County, State of Oregon. 11. Successors and Assigns: The covenants, agreements and obligations of this Agreement shall a dend to and be bindinc upon and inure to the benefit of the partners, heirs, personal representatives and assigns of the parties 'iereto. Neither OWNER nor SMI shall assign, sublet or transfer any rights under or interest in this Agreement without the wrltt';n consent of the other. Nothing contained in this paragraph shall prevent SMI from employing, with prior consent of OWNER, such independent professional associates and consultants,as SM1 may deem appropriate to assist in the performance of services hereunder. 12. Warranties: SMI warranties the StormFllter'"components and their designed function only. SMI does not guarantee an' . specified level of pollutant removal. (05 4 6' X 12' PRECAST STORMFILTER DATA I GENERAL NOTES DESIGN WATER QUALITY FLOW RATE(cis) 0.27 I ,i PEAK FLOW RATE(cis) 0.90 1.)STORMFILTER BY STORMWATER MANAGEMENT INC.. PORTLAND. OREGON 800/548-4667. ; RETURN PERIOD OF PEAK FLOW(prs) 100_0 2.)ALTERS TO BE SIPHON—ACTUATED AND SELF—CLEANING. /OF CARTRIDGES REQUIRED 9 3.)PRECAST CONCRETE VAULT TO BE CONSTRUCTED IN ACCORDANCE WITH ASTM C857I. CARTRIDGE FLOW RATE (15 GPM STD) 15 GPM AND C858. MEDIA TYPE PERUTE 4.)STORMFILTER REQUIRES 2.3'OF DROP FROM INLET TO OUTLET. INLET AND OUTLET PIPING TO BE SPECIFIED BY ENGINEER AND PROVIDED BY CONTRACTOR. PIPE DATA: I.E. MATERIAL DIAMETER INLET PIPE /1 289.84 PVC 12' } 5.)PRECAST STORMALTER EQUIPPED WITH EITHER CORED OPENINGS OR KNOCKOUTS INLET PIPE #2 NA NA NA AT INLET/OUTLET LOCATION. INLET PIPE 287.54 PVC 12' 6.)RECOMMENDED MINIMUM CLEARANCE FOR MAINTENANCE AClEcc CONTACT SIN FOR OUTLETRIM ELEVATION(S): OTHER OPTIONS IF A SHALLOWER SYSTEM IS REQUIRED 7.)ANTI—FLOTATION BALLAST TO BE SPECIFIED BY ENGINEER IF NEEDED. BALLAST TO BE SET ALONG ENTIRE LENGTH OF BOTH SIDES OF VAULT. BALLAST MATERIALS TO BE PROVIDED BY CONTRACTOR. 8.)ALL STORMFILTERS REQUIRE REGULAR MAINTENANCE REFER TO OPERATION AND �93 04 293.04 MAINTENANCE GUIDELINES FOR DETAILS. FLOW 9.)DETAIL REFLECTS DESIGN INTENT ONLY. ACTUAL VAULT DIMENSIONS AND CONFIGURATION FLOW RILL BE SHOWN ON PRODUCTION SHOP DRAWING. 10.)STANDARD DETAIL SHOWS MAXIMUM NUMBER OF CARTRIDGES. DUCT NUMBER REQUIRED (LADDER YES! TO BE SPECIFIED ON SITE PLANS. IANTI—FLOTATION BALLAST I HEIGHT I WIDTH I NOTES/SPECIAL REQUIREMENTS: I BAFFLE FLOW WALL SPREADER Noillirill 1111111 ' _ BALLAST 'p �r=!; (SEE NOTE 7) ••••/,• 09I,IddI,I.1 , ,0l ... HEIGHT UNDERDRAIN MANIFOLD WIDTH 6' x 12' STORMFILTER - SECTION VIEW SCALE: N.T.S. 3'-3 5-6" I 3 3 --Tr r- - ---- 1 II 1I t:: I ,,1 s t; 7, ., Ii Di i t I" 6' 1 t :a I I t:. 1 t 1 II II L---1L U..- 6' x 12' STORMFILTER - TOP VIEW ® THE STORMI9ATER MANAGEMENT U.S.U.S. PATENT NNoo.. 5 SCALE: N.T.S. TENT MANAGEMENT,322,629, No. 5,707,527, No. 6,027,639, No. 5,624,576, AND OTHER U.S. AND FOREIGN PATENTS PENDING LEE )ATE BY REVISION �DD/DD�DD IDOL XXX 6' x 12' PRECAST STORMFILTER DETAILS AND NOTES STANDARD DRAWING .1� ? IF�rc�n►irn if,„ ,.., _ ATE: !PROJECT NO.: !DRAWING FILE NAME. ��al llr Ill. I i BALLAST 4irk ALTERNATE PIPE (SEE NOTE LOCATIONS (TYP) —\ (SEE NOTE 5) r 2 1'-10" 1 1 Imo nr Iratair Hirfq.nrAratirey, 111.r7""' i Mani t AnDlifireradiiNFPMMOV ,I I iI 0 i WTLET x' BAY NET 1 OUTLET PIPE BAY (SEE NOTE 4) j t, I ' INLET PIPE (SEE NOTE 4) 6' x 12' STORMFILTER - PLAN VIEW SCALE: N.T.S. 0 GRADE RING (TYP) 30" 0 FRAME AND COVER BAFFLE WALL + (TYP) 41 LADDER i %. 1:j ammo.) PERMANENT POOL 4'-6" MIN 7,,,,i- r (SEE NOTE 6) , / P _____ _ V-8" �j,1 �.. .4.i4� s�'� 1 „' FLOW SPREADER l� I I (TYP) UNDERDRAIN STORMFILTER MANIFOLD CARTRIDGE (TYP) ENERGY (SEE NOTE 2) DISSIPATOR 6' x 12' STORMFILTER SECTION VIEW A-A SCALE: N.T.S. � 1 THE STORMIIATER ©GEMENT StormFilter U.S. PATENT No. 5,322,629, No. 5,707,527, No. 6,027,639, No. 5,624,576, AND OTHER U.S. r= _ AND FOREIGN PATENTS PENDING DA BY REVISION 6' x 12' PRECAST STORMFILTER IRE 'cm xXc )oLx PLAN AND SECTION VIEW = STANDARD DRAWING 111.11111111111111k , ploy—aocr IcnPAIM DV. ..., noAUN. e,,. ... ATE: 'PROJECT NO.: (DRAWING FILE NAME: IIIIIIIIIIr,`.* ISO. A V. CONVEYANCE SYSTEM ANALYSIS AND DESIGN 108 e p % ? Q O. 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TC:CCPFMJf3£ i Si33'{-•••---% 1E..22...0(IV ii£1 u EX YAWMEtf ` �Y: ""`.. --- I { .........: -- ___-.- i !£=:234.:5(IV 9::2"PPE W,r S.EtiE;./ c23.4?: ".S:.0a-1,a,, --� ___ vsr SUPS. f AtkVN:i k. > it) >� __ PG. 110 !£=.d4.9fi.12"AFL) •"'`&"c""C'F3:`+' `z"',a :f a,,ar::.:.. •.Sr:::::. Y{ r e.....::..:...:;c;t..;:ft:., -_- s_.7}tIC.SEGL'iKhLEC..--...I �`-'Yt FE.^£'5TE#at, i ___ Srfkhfrt^.kr:..: :k.:... . :.•%ff.::'.:", - 00Tea'CTB:N File: P:\11000s\11301\exhibit\11301-XGM.dwg Date/Time: 07/19/2004 13:35 Scale: 1=40 jbrown Xrefs: z11301-s,z11301-t, KING COUNTY, W AS HINGTON, SURFACE WATER DESIGN MANUAL ITGURE 3.5.1F 25-YEAR 24-HOUR ISOPLUVIALS 2S `f -..� ip ` %ram- _t,--� ' e*g.erlirP,1%,611 .°"`"".-1,P44 1:49\41140\-- 1 V'7r1 ' \ i :milli W 7/,, ,II, A ,,, ...4,1 do 111 krii‘ i A 3-0 i --,, -P-All'illif Ammeirls01111 61 i -Amer* _pin, 1 ,110‘ 3.z . AIR MIL_PA 4 - ilk 3.3 , 'ilibtaklrmoat Mit ,A1111041141bli : . - I 44 (\: --/ -';--.114, killmilibilliru_ ;- i. 11711?-4:14k\1144,1**407, )411 1 ' . Ix 1 ivisiiir \ ,, . AtirgEL - \. :;cis.��/� 0• � I,' ,,---1 El { ( �.. I/ ,Ailliwaelr girrik .--IONl t A 0„14-.wait 60161L'4.41„�� 6 0 -i A. irli • PAt ria 10101110nrowilli/f0tv/ '6' !,,, AINV na 1‘ lir vii ru4411,; . A.401110ratigewok !_'t,t!,i 0-cl.o 0--.1 1--•7, .,'';'— �''ai.a��%1 1 a1&\11111g„y,, t I,t),slam ll„p_i: rr -kA-/V-NwV 1t11 1 , . ' z -%--..w-. , IL MarNirai ii OlNi s 1. s!sAAi0ePdiiD.as rl,,p N r1%i.e.Ar:,.r4__.i ,,::. •_ I , 'MWS4 ilk` -.0 , _, Ir .,,irA*6.A. • , di" le\: ,..._ lair 4 1,...., ..:_-1 b,, ....15,40* ,Iii‘,,, , _ \ .5 • "._ , ..4 \ -1 VII 1 mu'ului ,tc__`. Ak .4 ' , i ., 1 ,._ --,,, ,--,- _ t " ' r 1 ("1.-" 1111(OffligliliPalii),041 4 .........., ,_,.; „,,,„. \Ann ra I Li - I ,,--- '''s 0 .gallia% Arrillik Q'''-t• fW, ik/Vj .=' 4 Z‘ t" \...._,. , , ,-- o • el, ! 7„,.,...., , ,\.. - - ,- \. -44 A , INI - • sal 1 . i, -II /� alki1 I .Jl�Yusc •Oteserijillifif A Wir, 01.41,0011V IOWA ii, 'k .,, AFF*10- ;111:10"\--VIMEirtgr",lor ,, 1-, ,„ ,.=,,,,, . , __ *41, , 1 , ' AIM 42,4 -,,iij __ -YEAR 24-HOUR PRECIPITATION O, itrAratirilliaLl4� - SS 3.4 ISOPLUVIALS OF 25-YEAR 24-HOUR ��ir Ate - '': S•0' TOTAL PRECIPITATION IN INCHES �i� 0410 Ifir IS 49 0 1 2 3 4 5 6 7 8 Miles -- 3S.1 I1 � ny cy ta• a-ann nnn 1$X) VI. SPECIAL REPORTS AND STUDIES 112 -_ __ L<1b .Je3-tj554 P.Z • r� r� f Y Earth Consultants Inc. *iti GentrrhNca!En rr. n-x',7ta1 sCkzltimS I Fi May 22, 1998 E-7859-1 Spieker Properties 33801 - 1" Way South, Suite 209 Federal Way, Washington 98003 1 • Attention: Sarah Weddle Subject: Infiltration Test Results South 340th and 1`` Way south Federal Way, Washington Reference: Geotechnical Engineering Study E-7859, dated September 9, 1997 By Earth Consultants, Inc. IDear Ms. Weddle: As requested, we have excavated two test pits in order to preform infiltration tests on t I native soil. Test results indicate the site soils have extremely low infiltration rates. he Subsurface .� The two test pits excavated for this letter exposed soil conditions consistent with those encountered during the subsurface exploration for the referenced study in 1997. The upper three to four feet being medium dense becoming very dense at this depth. Soil exposed in the test pits for the infiltration tests are silty sand with gravel. IGroundwater was not observed in the excavations during the infiltration tes ting. { t 98005 1 Bellevue(425)643-3780 1 Seattle(206)464-1 Suite 584 201, +FAX(425)74-608-60n Tacoma(253)272-6608 1. 13 rui r c( yts 13:5y LANCE MUELLER 206 328-0554 P.3 y " Spieker p r Properties E-7859-1 May 22, 1998 Page 2 ri Infiltration Rates Infiltration tests were performed in both test pits excavated on May 8. The test results indicate an infiltration rate of 3 inches per hour in TP-101 at four feet 9below grade and 1 inch Qer hour in TP-102 at four and one-half feet below grade. Both of these tests i were performed in the very dense soil underlying the site. These rates are the field measured infiltration rates and do not include any factors of safety. Ti We trust this letter meets your current needs. If you have any questions, please call. 'I Respectfully submitted, EARTH CONSULTANTS, INC. 1 t • 1/(_/ VI Kyle R. Campbell, P.E. Manager of Geotechnical Services T1 af-y,% / iI Douglas S. Lynne, P.E. Project Engineer ,1 • Attachment: Test Pit Location Plan' LI cc: Lance Mueller & Associates Attention: Mr. Bob Fadden Earth consultants. Inc_ ii 1 �� Ill r « iti 14:old LANCE MUELI FR 206 328-0554 P.4 Ti _ V ' (--- - 11 _-- S. 336th STREET i 3 11 , TP-6 1 411111.6. "1- TP-7' TP-102 1 0' ' TP-B-i- t 'TP-5 RI i tTP-9 approximate Scale TP-10 �� MINIM di 0 50 100 200ft. -4- 'TP-4 . 7 TP-11 , -j �- , / . , -...ter , _._ g - 2 1 • 9 -4- LEGEND j 'TP-3 r ; TP-1 -i- Approximate Location of 1 ECI Test Pit, Proj. No. i E-7859, Aug. 1997 f---L _`- 1-3 Proposed wilding i TP-2 -101 Ti)-1 ' TP-101-a-Approximate Location of ' 1 ECl Test Pit, Proj. No. E-7859-1, May 1998 t9 F4> .E�� . . pis ,r� ► Test Pit Location Plan '� /+Auf 1 Earth Consultants Inc. Spieke Project Federal Way, Washington — Proj. No. 7859-1 IDIWn. GLS I Date May'98 Checked DSL I Date 5/27 Plate 1 115 VIII. EROSION AND SEDIMENTATION CONTROL ANALYSIS & DESIGN 117 Erosion And Sedimentation Control Analysis And Design All temporary erosion and sedimentation control requirements will be designed and constructed in accordance with Appendix D of the 1998 King County Surface Water Design Manual and the Department of Ecology Best Management Practices (BMP's). Best Management Practices are defined as physical, structural, and/or managerial practices that when used singly or in combination, prevent or reduce pollution of stormwater runoff caused by construction activities. The Temporary Erosion and Sedimentation Control Plan for the proposed site has been designed to protect off-site adjacent properties as well as minimize the quantity of sediment laden water from entering the natural downstream discharge point located at the northwest portion of the site. The project will provide a temporary sediment trap to control sediment-laden water from entering the downstream discharge point. The clearing limits are clearly indicated on the drawings. The project will include the grading activities associated with the proposed improvements. The project will utilize a temporary construction entrance in the location of the permanent entrance to the development. Catch basin inlet protection will be used on existing and future catch basins to reduce sediment-laden water from entering the storm conveyance system during construction. Site runoff will be conveyed through interceptor swales with rock check dams at 100-foot intervals. The interceptor swales will be located throughout the site and near the toe of excavations as necessary to convey runoff to the sediment pond. Silt fencing shall be placed around a portion of the site to prevent silt-laden runoff from leaving the site. Temporary excavation cuts shall be limited per the geotechnical engineer recommendations. In all circumstances temporary cut slopes shall not exceed 2:1. All construction debris will be promptly removed from the site to minimize demolition and construction impacts to the site. The contractor shall implement additional BMP's as required and/or recommended by the City of Federal Way Site Inspector and as approved and/or required by other agencies during construction to prevent demolition and construction debris, waste, material, fuel, oil, lubricants and other fluids form entering the public right of way, adjacent property owners and the existing storm conveyance system. 118 11301-esc.doc TEMPORARY EROSION AND SEDIMENTATION CONTROL DESIGN Area = 2.53 acres Assume CN= 86 Use 10-year/24-hour storm due to downstream drainage conditions Q10 = 0.75 cfs SA (required) = (0.75)(2,080 sf/cfs) 1,560 sf Max. Water Surface Area = 40' x 40' = 1,600 sf Top Pond Area = 46' x 46' (1 ' Freeboard) V = ((40 x 40) + (22 x 22)) (3) = 3,126 cf 2 4/22/04 119 11301.003.doc #11301 Maplewood Office Bldg. RE: TESC Basin Calculations Appended on: 14:04:00 Monday,July 19, 2004 tesc Event Summary Event Peak Q (cfs) Peak T (hrs)IHyd Vol (acft)!Area(ac) Method Raintype 6 month 0.1226 8.17 0.0821 1 2.5300 j SBUH TYPEIA 2 year ` I 8.17 0.1951 2.5300 SBUH TYPEIA -) 10 year 0.7482 8.00 0.3325 2.5300 SBUH TYPEIA 311/44 25 year I. 8.00 0.4238 2.5300 SBUH rTYPEIA 1100 year( 1.3396 8.00 I 0.5560 2.5300 1 SBUH ITYPEIA Record Id: tesc Design Method SBUH Rainfall type TYPE1A Hyd Intv 10.00 min Peaking Factor 484.00 Abstraction Coeff 0.20 Pervious Area 0.00 ac DCIA 2.53 ac Pervious CN 0.00 DC CN 86.00 Pervious TC 0.00 min 1DC TC 17.07 min D Directly Connected CN Calc Description I P SubArea Sub cn Newly graded area 2.53 ac 86.00 DC Composited CN (AMC 2) I 86.00 Directly Connected TC Calc Type Description ! Length Slope Coeff Misc TT Sheet Short prairie grass and lawns.: 0.15 150.00 4.00% 0.1500 2.50 11.62 ft in min Shallow Short grass, pasture and lawns 350.00 (n-0.030) ft 1.00% 0.0300 5.45 min DirectlyConnected TC � 1 17.07min Licensed to: Barghausen Engineers 120 IX. ADDITIONAL DOCUMENTS: BOND QUANTITIES, FACILITY SUMMARY AND COVENANTS 121 Alb, CITY OF •, .., Federal WayPUBLIC WORKS DEPARTMENT BOND QUANTITIES PRICE SCHEDULE The unit prices shown on this schedule are recommended minimum prices consultants shall follow when completing the BOND QUANTITIES WORKSHEET for engineering plan submittals. Unit prices may not deviate from this schedule unless prior approval is obtained from the Department of Public Works. Unit Unit Price ROAD CONSTRUCTION Clearing & Grubbing LS Bid Estimate Sawcutting LF 1.30 Excavation & Embankment CY 18.00 AC Pavement TN 40.00 CSTC TN 16.00 Cement Concrete Curb/Gutter SY 10.00 Extruded Asphalt Curb LF 4.00 Concrete Sidewalk LF 22.00 Concrete driveway approach SY 35.00 Monument in case EA 155.00 Adjust ex. monument to grade EA 330.00 Adjust ex. cb to grade EA 400.00 DRAINAGE PIPE 6" Pipe LF 11.00 8" Pipe LF 25.00 12" Pipe LF 40.00 18" Pipe LF 40.00 24" Pipe LF 53.00 36" Pipe LF 92.00 48" Pipe LF 85.00 54" Pipe LF 106.00 60" Pipe LF 130.00 72" Pipe LF 214.00 CATCH BASINS Inlet & Grate EA 475.00 CB Type I & Grate EA 900.00 CB Type II 48" &Grate EA 1,900.00 CB Type II 54" & Grate EA 2,000.00 CB Type II 60"& Grate EA 3,200.00 CB Type II 72" & Grate EA 5,000.00 CB Type II 84"& Grate EA 9,100.00 CB Type II 96" & Grate EA Bid Estimate Round solid locking lid EA 360.00 Abandon existing cb EA 325.00 Bond Quantities Price Schedule&Worksheet 122 11301.005.doc[BDwtep] Unit Unit Price RETENTION/DETENTION CONTROL Pond Excavation & Spillway CY 7.00 Restrictor/Separator EA 750.00 Vault EA Bid Estimate Gravel Access Road LF 15.00 Rip Rap Outfall Protection CY 17.00 Bollards EA 500.00 Fencing (around pond) LF 12.00 Infiltration Trench w/12" Perf LF 18.00 Flow Spreader LF 20.00 Trash Racks EA 200.00 WATER QUALITY Bioswale EA Bid Estimate Wetvault EA Bid Estimate Stormfilter Vault EA Bid Estimate Stormwater wetland EA Bid Estimate Sand Filter EA Bid Estimate Catch basin inserts EA 800.00 Oil/Water Separator EA Bid Estimate High Flow Bypass EA Bid Estimate RETAINING WALLS &STRUCTURES Retaining Walls SF 23.00 Bridges LS Bid Estimate TRAFFIC & LIGHTING Signalization LS Bid Estimate Channelization LS Bid Estimate Signs EA 100.00 Streetlights (City Center) EA 5,000.00 Streetlights (Standard) EA 3,000.00 RIGHT-OF-WAY LANDSCAPING Street Trees EA 250.00 Sod SF 1.00 Shrubs (City Center) EA 6.00 Tree Grates (City Center) EA 700.00 SITE STABILIZATION/EROSION CONTROL Quarry Spalls TN 75.00 Seeding/Mulch Acre 3,000.00 Silt Fence LF 4.00 Netting Jute Mesh SY 13.00 Sediment Pond Standpipe EA 200.00 Sensitive Area Fencing LF 3.00 Catch basin inserts EA 70.00 Bond Quantities Price Schedule&Worksheet 123 11301.005.doc[BDIUtep] k CITY OF i„, ,, Federal Way PUBLIC WORKS DEPARTMENT BOND QUANTITIES WORKSHEET , Project Name:MAPLEWOOD OFFICE BUILDING Date: 5/25/04 Project No.: By:BARGHAUSEN ENGINEERS Site Address: NW Corner South 340th St. & 1st Way South Flinn those items which pertain to this project and return to the Public Works Department Public Roadway Private On-Site Im I rovements Improvements Unit Item Unit Price Quantity Price Quantity Price ROAD CONSTRUCTION Clearing&Grubbing LS Bid Estimate $ $ Sawcutting LF 1.30 370 $481 280 $364 Excavation&Embankment CY 18.00 $ 500 $9,000 AC Pavement TN 40.00 37 $1,480 579 $23,160 CSTC TN 16.00 75 $1,200 1,226 $19,616 Cement Concrete Curb/Gutter LF 10.00 375 $3,750 235 $2,350 Extruded Asphalt Curb LF 4.00 $ $ Concrete Sidewalk LF 22.00 $ 950 $20,900 Concrete driveway approach SY 35.00 $ $ Monument in case EA 155.00 $ $ Adjust ex. monument to grade EA 330.00 $ $ Adjust ex. cb to grade EA 400.00 $ $ DRAINAGE PIPE 6"Pipe LF 11.00 $ 1082 $11,902 8"Pipe LF 25.00 $ $ 12" Pipe LF 40.00 $ 615 $24,600 18" Pipe LF 40.00 $ $ 24" Pipe LF 53.00 $ $ 36" Pipe LF 92.00 $ $ 48" Pipe LF 85.00 $ $ 54" Pipe LF 106.00 $ $ 60" Pipe LF 130.00 $ $ 72" Pipe LF 214.00 $ $ CATCH BASINS Inlet&Grate EA 475.00 $ $ CB Type I&Grate EA 900.00 $ 6 $5,400 CB Type II 48"&Grate EA 1,900.00 $ 2 $3,800 CB Type II 54"&Grate EA 2,000.00 $ $ CB Type II 60"&Grate EA 3,200.00 $ $ CB Type II 72"&Grate EA 5,000.00 $ $ CB Type II 84"&Grate EA 9,100.00 $ $ CB Type II 96"&Grate EA Bid Estimate $ $ Round solid locking lid EA 360.00 $ $ Abandon exiting cb EA 325.00 $ $ Bond Quantities Price Schedule&Worksheet 124 11301.005.doc[BDK/tep] RETENTION/DETENTION CONTROL Pond Excavation &Spillway CY 7.00 $ $ Restrictor/Separator EA 750.00 $ $ Vault EA Bid Estimate $ $ Gravel Access Road LF 15.00 $ $ Rip Rap Outfall Protection CY 17.00 $ 2 $34 Bollards EA 500.00 $ $ Fencing(around pond) LF 12.00 $ $ Infiltration Trench w/12" Perf LF 18.00 $ $ Flow Spreader LF 20.00 $ $ Trash Racks EA 200.00 $ $ WATER QUALITY Bioswale EA Bid Estimate $ 1 $8,000 Wetvault EA Bid Estimate $ $ Stormfilter Vault EA Bid Estimate $ 1 $23,000 Stormwater wetland EA Bid Estimate $ $ Sand Filter EA Bid Estimate $ $ Catch basin inserts EA 800.00 $ $ Oil/Water Separator EA Bid Estimate $ $ High Flow Bypass EA Bid Estimate $ $ RETAINING WALLS &STRUCTURES Retaining Walls SF 23.00 $ 440 $10,120 Bridges LS Bid Estimate $ $ TRAFFIC & LIGHTING Signalization LS Bid Estimate $ $ Channelization LS Bid Estimate 1 $3,000 $ Signs EA 100.00 $ $ Streetlights(City Center) EA 5,000.00 $ $ Streetlights (Standard) EA 3,000.00 $ 16 $48,000 RIGHT-OF-WAY LANDSCAPING Street Trees EA 250.00 $ $ Sod SF 1.00 $ $ Shrubs(City Center) EA 6.00 $ $ Tree Grates(City Center) EA 700.00 $ $ SITE STABILIZATION/EROSION CONTROL Quarry Spalls TN 75.00 $ 2 $150 Seeding/Mulch Acre 3,000.00 $ 1.5 $4,500 Silt Fence LF 4.00 $ 711 $2,844 Netting Jute Mesh SY 13.00 $ $ Sediment Pond Standpipe EA 200.00 $ 1 $200 Sensitive Area Fencing LF 3.00 $ $ Catch basin inserts EA 70.00 $ $ Subtotal $9,911 Subtotal $217,940 irt/fAl06 Vilfri (425) 251-6222 gnature Telephone Number BARGHAUSE CONSULTING ENGINEERS Firm Name Bond Quantities Price Schedule&Worksheet 125 11301.005.doc[BDK/tep] THE FOLLOWING INFORMATION WILL BE COMPLETED BY THE CITY OF FEDERAL WAY PUBLIC WORKS DEPARTMENT; Public Roadway Improvements: $9,911 Private On-Site Improvements: $210,246 Erosion/Sedimentation Control: $7,694 Subtotal $ 227,851 CONTINGENCY (20%) $ 45,570 TOTAL BOND AMOUNT $ 273,421 Bond Quantities Price Schedule&Worksheet 126 11301.005.doc[BDwtep] KING COUNTY,WASHINGTON, SURFACE WATER DESIGN MANUAL STORMWATER FACILITY SUMMARY SHEET Development Maplewood Office Building Date July 12,2004 Location NWC—South 340th Street and 1st Way South ENGINEER DEVELOPER Name Patrick Taitano Name Doug Klappenbaugh Firm Barghausen Consulting Engineers,Inc. Firm Sound Ventures,Inc. Address 18215—72nd Avenue South Address 320—7 106th Avenue N.E.,Suite 100 Kent,WA 98032 Bellevue,WA 98004 Phone (425)251-6222 Phone (206)223-9500 Developed Site: Acres 2.53 Number of lots Number of detention facilities on site: Number of infiltration facilities on site: ponds ponds vaults vaults tanks tanks Flow control provided in regional facility(give location) Panther Lake Regional Detention System No flow control required Exemption number Downstream Drainage Basins Immediate Major Basin Basin A Basin B Basin C Basin D Number&type of water quality facilities on site: 1 biofiltration swale regular/wet/or sand filter(basic or large?) continuous inflow?) sand filter,linear(basic or arge?) combined detention/WQ pond sand filter vault(basic or large?) (WQ portion basic or large?) combined detention/wet vault stormwater wetland 1 compost filter wetpond(basic or large?) filter strip wetvault flow dispersion farm management plan landscape management plan oil/water separator(baffle or coalescing plate?) catch basin inserts: Manufacturer pre-settling pond pre-settling structure; Manufacturer flow-splitter catchbasin DESIGN INFORMATION INDIVIDUAL BASIN A B C D Water Quality desien flow 0.27 cfs Water Oualitv treated volume or wetpond V. 1998 Surface Water Design Manual 9/1/98 127 11301.006.doc[PAT/tep] KING COUNTY,WASHINGTON,SURFACE WATER DESIGN MANUAL DESIGN TOTAL INDIVIDUAL BASIN INFORMATION,cont'd Drainaee basin(s) A B C D Offsite area N/A Tyne of Storaee Facility N/A Live Storaee Volume N/A Predeveloned Runoff Rate N/A 2-year N/A 10-year N/A 100-year N/A Develoned Runoff Rate 2-year N/A 10-year N/A 100-year N/A Tyne of restrictor N/A Size of the orifice/restrictor No. 1 N/A No.2 N/A No.3 N/A No.4 N/A FLOW CONTROL&WATER QUALITY FACILITY SUMMARY SHEET SKETCH All detention,infiltration and water quality facilities must include a sketch per the following criteria: 1. Heading for the drawings should be located at the top of the sketch(top right-hand corner). The heading should contain: • North arrow(point up or to left) • D9# • Plat name or short plat number • Address(nearest) • Date drawn(or updated) • Thomas Brothers page,grid number 2. Label CBs and MHs with the plan and profile designation. Label the control structure in writing or abbreviate with C.S. Indicate which structures provide spill control. 3. Pipes--indicate: Pipe size Pipe length Flow direction Use a single heavy weight line 4. tanks--use a double,heavy weight line and indicate size(diameter) 5. Access roads • Outline the limits of the road • Fill the outline with dots if the road is gravel. Label in writing if another surface. 6. Other Standard Symbols: • Bollards •••••••■ • Riprap o 0 0 0 0 0 000000 Fences --x--x--x--x--x--x-- • Ditches 7. Label trash tracks in writing 8. :Label all streets with the actual street sign designation. If you don't know the actual street name,consult the plat map. 9. Include easements and lot lines or tract limits when possible. 10. Arrange all the labeling or writing to read from left to right or from bottom to top with reference to a properly oriented heading. 11. Indicate driveways or features that may impact access,maintenance or replacement. 1998 Surface Water Design Manual 9/1/98 128 11301.006.doc[PAT/tep] WATER QUALITY FACILITY SKETCH } I I I �: fy s. , V i • i I WA *M. x ch' • • • i 3 • ' °.�5 1 ":" 8�'i h.F 12"",.�'V �I�...46..9 f3..ri°�6': '; ':: '-''. : :. , ...". ." y } I. 11 3 .0 ,� 3E�t1. HP CO � .t t x o " : .>. �. i - E g U Y". t I }E aFi= •3 • -. - 4 a�• • • � E I r-Z S. ''' St? :;.::.::.::- :....:'::. i f.F...;:::.,''' : --!fi.ii...;.::.:!::, :::. - ' .!,.i.i.:1}1r4HA Ide::.::..:-.:i:....:;',..:Atfk;:''.':'.';.i'::".:i:.. ..... . ., .. ';''......1'77',-, ,,..2'i,..... ,.... .. .,,,.:.: . .. . .... ..,..... r I h 1;i w U e D f / E 22 2 _ -"J >r S�DR_35 0 2. X <; 300.0 BW r298� �� / f� / / cr •�� . 7 i 1 �i11 r -k --�_.-__.._-- -1 �i ��o / P. FLOW: SPREAD R 11 �298�- c '' BLBEt�WAtt -- `�' ; �� .f fl 0 E r296� � ``�` `` �t �� a v\ it Q-`/� _ �=` ,;, L J 295. 1 r r . �i `; _ --�2-' --- - t y �"' D 3 A=90'00.00" t,.� , \__ . '`' .. . 3`:8 0}I i c)b _ - -r.� . . 1 93. BW ::.• hl • ;=.T ... ..." mo --,�... ;-�... ,�. _ I I 295• .6 TWAe. L=54.98f MEET AND MATC-I ice _ �E �eeal �, .. `,, R=35.00 iu o EXISTING PAVEM I`T 30 .7 ,I ___�DL7 TW '5 �;:y / �,, � i} ` . p, o 1 . el I» i; • IX. CB ri N 296.0 BW ,. '' c D TO BE REMOVED - ND NEW PEDESTf IAN� N 53'40'00� W 281 '3' • - CONNECTION W/STAIRSr.c?• _ `" i"•` 293.2 2t 2 ' r . RIM=299.88 L , _ 4.� 29 ( 2"S r �f 2 .4J r i s D N. ..., PA;..3 R D a e c D *z'L• . .- I- . D .�`�� 5 51 1 W • >yt ...�. a" �R� _ ___ EX. SDMH(TO BE REMOVE 411 MATC EX. 0..., EX. 15" SD I I RIM=300.14 2I.27 EX INC 5' tom) CB8 TYPE 1 I I IE=293.32(12"NW) +IDEWALK Q U W/BEEHIVE GRATE I I IE=294.89(12"NE) c IE 293.95 a . 15" SD -.17 -= #M=293€i5 -- IE=294.75(12"S) I IE=292.21 _ t"I I - IE=298.86(12" VERT. .. .............. N 53.40'00' W FLOW SPREADER "'II Y, _.._ _ _._.-_ _ •- �" IX. TELEPHONE S•UTH 340TH STREET I I MANHOLE II � EX. STREET LIGHT 1O 'LIBATION SWALE _ ` ON 4" SQ WOOD POST (116LF _ t':WIDE • 1.5X) a • » D $ G t D ... ° _ _ _ IX. RAILROAD TIE EX. CB TYPE 1 ,y RETAINING WALL EX. CB TYPE 1 '`, RIM=290.97 \ RIM=299.20 IE=287.67(15"W) IE=294.85(12"W) d J IE=287.47(15"S) IE_295.00(12MS) �� IE=287.87(15"N) IE-294.60(15 E) • {_ I' '� 6'x12' STORM EX. CB TYPE 1 I RIM=290.96 \_DCCBTT'PE 1 �jO FILTER VAULT IE=286.48(15"N) 1b LF 12" RIM=299.05 / �� IE=286.28(15"SE) , S)R-35 0 0.5% IE=295.61(12"N) '� RIM-293.25- IE=286.28(15"SE) r. • IE-289.84(IN) A i IE-287.54(OUT) ! I •D:., II � PG. 129 File: P:\11000s\11301\engineering\11301-XGM.dwg Date/Time: 07/13/2004 09:32 Scale: 1=20 bwollaston Xrefs: z11301-s,z11301-t,z11301-b,pat-t, X. OPERATIONS AND MAINTENANCE MANUAL 134 KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL APPENDIX A MAINTENANCE STANDARDS FOR PRIVATELY MAINTAINED DRAINAGE FACILITIES NO. 3-CLOSED DETENTION SYSTEMS(PIPES/TANKS) Maintenance Defect Conditions When Maintenance is Needed Results Expected When Component Maintenance is Performed Storage Area Plugged Air Vents One-half of the cross section of a vent is blocked at Vents free of debris and any point with debris and sediment sediment Debris and Accumulated sediment depth exceeds 10%of the All sediment and debris Sediment diameter of the storage area for 1/2 length of storage removed from storage area. vault or any point depth exceeds 15%of diameter. Example:72-inch storage tank would require cleaning when sediment reaches depth of 7 inches for more than 1/2 length of tank. Joints Between Any crack allowing material to be transported into All joint between tank/pipe Tank/Pipe Section facility sections are sealed Tank Pipe Bent Any part of tank/pipe is bent out of shape more than Tank/pipe repaired or replaced Out of Shape 10%of it's design shape to design. Manhole Cover Not in Place Cover is missing or only partially in place.Any open Manhole is closed. manhole requires maintenance. Locking Mechanism cannot be opened by one maintenance Mechanism opens with proper Mechanism Not person with proper tools.Bolts into frame have less tools. Working than 1/2 inch of thread(may not apply to self-locking lids.) Cover Difficult to One maintenance person cannot remove lid after Cover can be removed and Remove applying 801bs of lift. Intent is to keep cover from reinstalled by one maintenance sealing off access to maintenance. person. Ladder Rungs King County Safety Office and/or maintenance person Ladder meets design standards Unsafe judges that ladder is unsafe due to missing rungs, allows maintenance person safe misalignment, rust,or cracks. access. Catch Basins See"Catch Basins"Standards No.5 See"Catch Basins"Standards No.5 • 1998 Surface Water Design Manual 135 1130 1-APNDXA.doc APPENDIX A MAINTENANCE STANDARDS FOR PRIVATELY MAINTAINED DRAINAGE FACILITIES NO. 5-CATCH BASINS Maintenance Defect Conditions When Maintenance is Needed Results Expected When Component Maintenance is performed General Trash&Debris Trash or debris of more than 1/2 cubic foot which is No Trash or debris located (Includes Sediment) located immediately in front of the catch basin immediately in front of catch opening or is blocking capacity of the basin by basin opening. more than 10% Trash or debris(in the basin)that exceeds 1/3 the No trash or debris in the catch depth from the bottom of basin to invert the lowest basin. pipe into or out of the basin. Trash or debris in any inlet or outlet pipe blocking Inlet and outlet pipes free of more than 1/3 of its height. trash or debris. Dead animals or vegetation that could generate No dead animals or vegetation odors that could cause complaints or dangerous present within the catch basin. gases(e.g.,methane). Deposits of garbage exceeding 1 cubic foot in No condition present which volume would attract or support the breeding of insects or rodents. Structure Damage to Corner of frame extends more than 3/4 inch past Frame is even with curb. Frame and/or Top Slab curb face into the street(If applicable). Top slab has holes larger than 2 square inches or Top slab is free of holes and cracks wider than 1/4 inch(intent is to make sure cracks. all material is running into basin). Frame not sitting flush on top slab,i.e.,separation Frame is sitting flush on top of more than 3/4 inch of the frame from the top slab. slab. Cracks in Basin Walls/ Cracks wider than 1/2 inch and longer than 3 feet, Basin replaced or repaired to Bottom any evidence of soil particles entering catch basin design standards. through cracks,or maintenance person judges that structure is unsound. Cracks wider than 1/2 inch and longer than 1 foot No cracks more than 1/4 inch at the joint of any inlet/outlet pipe or any evidence wide at the joint of inlet/outlet of soil particles entering catch basin through pipe. cracks. Sediment/ Basin has settled more than 1 inch or has rotated Basin replaced or repaired to Misalignment more than 2 inches out of alignment. design standards. 11301-APNDXA.doc 136 1998 Surface Water Design Manual APPENDIX A MAINTENANCE STANDARDS FOR PRIVATELY MAINTAINED DRAINAGE FACILITIES NO. 5-CATCH BASINS(CONTINUED) Maintenance Defect Conditions When Maintenance is Needed Results Expected When Component Maintenance is performed Fire Hazard Presence of chemicals such as natural gas,oil and No flammable chemicals gasoline. present. Vegetation Vegetation growing across and blocking more than No vegetation blocking opening 10%of the basin opening. to basin. Vegetation growing in inlet/outlet pipe joints that is No vegetation or root growth more than six inches tall and less than six inches present. apart. Pollution Nonflammable chemicals of more than 1/2 cubic foot No pollution present other than per three feet of basin length. surface film. Catch Basin Cover Cover Not in Place Cover is missing or only partially in place.Any open Catch basin cover is closed catch basin requires maintenance. Locking Mechanism Mechanism cannot be opened by on maintenance Mechanism opens with proper Not Working person with proper tools. Bolts into frame have less tools. than 1/2 inch of thread. Cover Difficult to One maintenance person cannot remove lid after Cover can be removed by one Remove applying 80 lbs.of lift;intent is keep cover from maintenance person. sealing off access to maintenance. Ladder Ladder Rungs Ladder is unsafe due to missing rungs,misalignment, Ladder meets design standards Unsafe rust,cracks,or sharp edges. and allows maintenance person safe access. Metal Grates Grate with opening wider than 7/8 inch. Grate opening meets design (If Applicable) standards. Trash and Debris Trash and debris that is blocking more than 20%of Grate free of trash and debris. grate surface. Damaged or Grate missing or broken member(s)of the grate. Grate is in place and meets Missing. design standards. NO. 6 DEBRIS BARRIERS(E.G., TRASH RACKS) Maintenance Defect Condition When Maintenance is Needed Results Expected When Components Maintenance is Performed. General Trash and Debris Trash or debris that is plugging more than 20%of Barrier clear to receive capacity the openings in the barrier. flow. Metal Damaged/Missing Bars are bent out of shape more than 3 inches. Bars in place with no bends more Bars. than 3/4 inch. Bars are missing or entire barrier missing. Bars in place according to design. Bars are loose and rust is causing 50%deterioration Repair or replace barrier to to any part of barrier. design standards. 1998 Surface Water Design Manual 137 11301-APNDXA.doc APPENDIX A MAINTENANCE STANDARDS FOR PRIVATELY MAINTAINED DRAINAGE FACILITIES NO.7-ENERGY DISSIPATERS Maintenance Defect Conditions When Maintenance is Needed Results Expected When Components Maintenance is Performed. External: Rock Pad Missing or Moved Only one layer of rock exists above native soil in Replace rocks to design Rock area five square feet or larger,or any exposure of standards. native soil. Dispersion Trench Pipe Plugged with Accumulated sediment that exceeds 20%of the Pipe cleaned/flushed so that it Sediment design depth. matches design. Not Discharging Visual evidence of water discharging at Trench must be redesigned or Water Properly concentrated points along trench(normal condition rebuilt to standards. is a"sheet flow"of water along trench). Intent is to prevent erosion damage. Perforations Over 1/2 of perforations in pipe are plugged with Clean or replace perforated pipe. Plugged. debris and sediment. Water Flows Out Maintenance person observes water flowing out Facility must be rebuilt or Top of"Distributor" during any storm less than the design storm or its redesigned to standards. Catch Basin. causing or appears likely to cause damage. Receiving Area Water in receiving area is causing or has potential No danger of landslides. Over-Saturated of causing landslide problems. Internal: Manhole/Chamber Worn or Damaged Structure dissipating flow deteriorates to 1/2 or Replace structure to design Post.Baffles,Side original size or any concentrated worn spot standards. of Chamber exceeding one square foot which would make structure unsound. Other Defects See"Catch Basins"Standard No.5 See"Catch Basins"Standard No. 5 11301-APNDXA.doc 138 1998 Surface Water Design Manual APPENDIX A MAINTENANCE STANDARDS FOR PRIVATELY MAINTAINED DRAINAGE FACILITIES NO. 8- FENCING Maintenance Defect Conditions When Maintenance is Needed Results Expected When Components Maintenance is Performed General Missing or Broken Any defect in the fence that permits easy entry Parts in place to provide adequate Parts to a facility. security. Erosion Erosion more than 4 inches high and 12-18 No opening under the fence that inches wide permitting an opening under a exceeds 4 inches in height. fence. Wire Fences Damaged Parts Post out of plumb more than 6 inches. Post plumb to within 1-1/2 inches. Top rails bent more than 6 inches. Top rail free of bends greater than 1 inch. Any part of fence(including post,top rails,and Fence is aligned and meets design fabric)more than 1 foot out of design alignment. standards. Missing or loose tension wire. Tension wire in place and holding fabric. Missing or loose barbed wire that is sagging Barbed wire in place with less than more than 2-1/2 inches between posts. 3/4 inch sag between post. Extension arm missing,broken,or bent out of Extension arm in place with no shape more than 1 1/2 inches. bends larger than 3/4 inch. Deteriorated Paint or Part or parts that have a rusting or scaling Structurally adequate posts or Protective Coating condition that has affected structural adequacy. parts with a uniform protective coating. Openings in Fabric Openings in fabric are such that an 8-inch- No openings in fabric. diameter ball could fit through. NO.9-GATES Maintenance Defect Conditions When Maintenance is Needed Results Expected When Component Maintenance is Performed General Damaged or Missing Missing gate or locking devices. Gates and Locking devices in Members place. Broken or missing hinges such that gate cannot Hinges intact and lubed.Gate is be easily opened and closed by a maintenance working freely. person. Gate is out of plumb more than 6 inches and Gate is aligned and vertical. more than 1 foot out of design alignment. Missing stretcher bar,stretcher bands,and ties. Stretcher bar,bands and ties in place. Openings in Fabric See"Fencing"Standard No.8 See"Fencing"Standard No.8 1998 Surface Water Design Manual 139 11301-APNDXA.doc APPENDIX A MAINTENANCE STANDARDS FOR PRIVATELY MAINTAINED DRAINAGE FACILITIES NO. 10-CONVEYANCE SYSTEMS(PIPES & DITCHES) Maintenance Defect Conditions When Maintenance is Needed Results Expected When Component Maintenance is Performed Pipes Sediment&Debris Accumulated sediment that exceeds 20%of the Pipe cleaned of all sediment diameter of the pipe. and debris. Vegetation Vegetation that reduces free movement of water All vegetation removed so water through pipes. flows freely through pipes. Damaged Protective coating is damaged;rust is causing Pipe repaired or replaced. more than 50%deterioration to any part of pipe. Any dent that decreases the cross section area of Pipe repaired or replaced. pipe by more than 20%. Open Ditches Trash&Debris Trash and debris exceeds 1 cubic foot per 1,000 Trash and debris cleared from square feet of ditch and slopes. ditches. Sediment Accumulated sediment that exceeds 20%of the Ditch cleaned/flushed of all design depth. sediment and debris so that it matches design. Vegetation Vegetation that reduces free movement of water Water flows freely through through ditches. ditches. Erosion Damage to See"Ponds"Standard No. 1 See"Ponds"Standard No. 1 Slopes Rock Lining Out of Maintenance person can see native soil beneath Replace rocks to design Place or Missing(If the rock lining. standards. Applicable). Catch Basins See"Catch Basins:Standard No.5 See"Catch Basins"Standard No.5 Debris Barriers See"Debris Barriers"Standard No.6 See"Debris Barriers"Standard (e.g.,Trash Rack) No.6 NO. 11 -GROUNDS(LANDSCAPING) Maintenance Defect Conditions When Maintenance is Needed Results Expected When Component Maintenance is Performed General Weeds Weeds growing in more than 20%of the landscaped Weeds present in less than 5% (Nonpoisonous) area(trees and shrubs only). of the landscaped area. Safety Hazard Any presence of poison ivy or other poisonous No poisonous vegetation vegetation. present in landscaped area. Trash or Litter Paper,cans,bottles,totaling more than 1 cubic foot Area clear of litter. within a landscaped area(trees and shrubs only)of 1,000 square feet. Trees and Shrubs Damaged Limbs or parts of trees or shrubs that are split or Trees and shrubs with less than broken which affect more than 25%of the total 5%of total foliage with split or foliage of the tree or shrub. broken limbs. Trees or shrubs that have been blown down or Tree or shrub in place free of knocked over. injury. Trees or shrubs which are not adequately supported Tree or shrub in place and or are leaning over,causing exposure of the roots. adequately supported;remove any dead or diseased trees. 11301-APNDXA.doc 140 1998 Surface Water Design Manual APPENDIX A MAINTENANCE STANDARDS FOR PRIVATELY MAINTAINED DRAINAGE FACILITIES NO. 13-WATER QUALITY FACILITIES A.) Biofiltration Swale Maintenance Defect Condition When Maintenance is Needed Results Expected When Component Maintenance is Performed Biofiltration swale Sediment Accumulation Sediment depth exceeds 2-inches No sediment deposits on grass on Grass Layer layer of the bio-swale,which would impede filtration of runoff. Vegetation When the grass becomes excessively tall Vegetation is mowed or nuisance (greater than 10-inches);when nuisance weeds vegetation is eradicated,such that and other vegetation starts to take over. flow not impeded.Grass should be mowed to a height between 4 inches and 9 inches. Inlet Outlet Pipe Inlet/outlet pipe clogged with sediment and/or No clogging or blockage in the inlet debris. and outlet piping. Trash and Debris Trash and debris accumulated in the bio-swale. Trash and debris removed from Accumulation bioswale. Erosion/Scouring Where the bio-swale has eroded or scoured Bioswale should be re-graded and the bottom due to flow channelization,or higher re-seeded to specification,to flows. eliminated channeled flow. Overseeded when bare spots are evident. 1998 Surface Water Design Manual 141 11301-APNDXA.doc APPENDIX A MAINTENANCE STANDARDS FOR PRIVATELY MAINTAINED DRAINAGE FACILITIES NO. 13-WATER QUALITY FACILITIES(CONTINUED) F.) Leaf Compost Filters Maintenance Defect Conditions When Maintenance is Needed Results Expected When Component Maintenance is Performed Above Ground Sediment Sediment depth exceeds 0.25-inches. No sediment deposits on fabric Open Swale accumulation on Geo- layer which would impede Textile/media permeability of the fabric. Trash and debris Trash and debris accumulated on compost filter Trash and debris removed from accumulations bed. compost filter bed. Sediment/debris in When the yard drain CB's and clean-outs become Remove the accumulated drain/yard drains/ full of sediment and/or debris. material from the facility. clean-outs. Vegetation Vegetation impending flow through section,or Vegetation is mowed or encroaching into compost media. eradicated such that flow is no longer impeded. Leaf Compost Media Drawdown of water through the leaf compost, Replace media with new to takes longer than 12-hours,and/or flow through design specifications,in addition the overflow pipes occurs frequently. to replacing fabric. Short-Circuiting When Channeled flow occurs over the leaf media; Flow is uniform over the entire and where flow perks through the media at the width of the media section,and baffles. concentrated percolation does not occur at the baffle walls. Media needs to be graded and re-set at the baffles to form a seal.Weir plate may need to be adjusted in addition. Erosion Damage to Eroded damage over 2-inches deep where cause Slopes should be stabilized by Slopes of damage is prevalent or potential for continued using proper erosion control erosion is prevalent. measures. Damaged Geo-Textile When fabric is torn,deteriorated, raveled,etc. Fabric replaced as necessary. Fabric. Rock Pad Missing or Soil beneath the pad is visible. Replace or rebuild the rock pad out of place to design standards. Damaged Pipes Any part of the pipe system that is crushed, Pipe repaired or replaced. damage due to corrosion,and/or settlement. • V-Notch Weir Flow is not being uniformly spread over filter Clean,repair or replace the weir Assemblies media. systems. Below Ground Sediment Sediment depth exceeds 0.25-inches. No sediment deposits on fabric Vault Accumulation on Geo- layer which would impede Textile/Media. permeability of the fabric and compost media. Sediment Sediment depth exceeds 6-inches in first chamber. No sediment deposits in vault Accumulation in Vault bottom of first chamber. Trash/Debris Trash and debris accumulated on compost filter Trash and debris removed from Accumulation bed. the compost filter bed. Sediment in Drain When drain pipes,clean-outs,yard drains become Remove the accumulated Pipes/Yard Drains/ full with sediment and/or debris. material from the facilities. Clean-Outs 11301-APNDXA.doc 142 1998 Surface Water Design Manual APPENDIX A MAINTENANCE STANDARDS FOR PRIVATELY MAINTAINED DRAINAGE FACILITIES NO. 13-WATER QUALITY FACILITIES(CONTINUED) F.)Leaf Compost Filter(Continued) Maintenance Defect Condition When Maintenance is Needed Results Expected When Component Maintenance is Performed Below Ground Leaf Compost Media Drawdown of water through the leaf compost,takes Replace media with new longer than 12-hours,and/or overflow occurs compost to specifications,in frequently. addition to replacing fabric. Short Circuiting When seepage occurs along the vault wall and Percolation of water occurs comers occur. along the walls and corners and not through the media section. Media needs to be re-set along the vault wall and corners to form a semi-seal. Plugged/Damaged Flow tends to backup unusually high in the first Clean out the elbow fittings and/ Elbows chamber of the vault. or replace if damaged. Damaged Geo-Textile Fabric is torn,deteriorated, raveled,etc. Fabric replaced as necessary. Fabric Rock Pad Missing or Soil beneath the pad is visible. Replace or rebuild the rock pad Out of Place to design standards. Damaged Pipes Any part of the pipes that are crushed,damaged Pipe repaired and/or replaced. due to corrosion and/or settlement. Access Cover Cover cannot be opened,one person cannot open Cover repaired to proper Damaged/Not the cover,corrosion/deformation of cover. working specifications or Working replaced. V-Notch Weir Flow does not spread uniformly over filter media by Clean,repair and/or replace the Assemblies weir section. weir plate section,or adjust height. Vault Structure Cracks wider than 1/2-inch and any evidence of soil Vault replaced or repaired to Includes Cracks in particles entering the structure through the cracks, design specifications. Wall,Bottom, or maintenance/inspection personnel determines Damage to Frame that the vault is not structurally sound. and/or Top Slab Baffles Baffles corroding,cracking warping,and/or showing Repair or replace baffles to signs of failure as determined by maintenance/ specification. inspection person. Access Ladder Ladder is corroded or deteriorated,not functioning Ladder replaced or repaired and Damaged properly,missing rungs,cracks,and misaligned.- meets specifications,and is safe to use as determined by inspection personnel. Cracks wider than 1/2-inch at the joint of any No cracks more than 1/4-inch inlet/outlet pipe or any evidence of soil particles wide at the joint of the inlet/ entering the vault through the walls. outlet pipe. 1998 Surface Water Design Manual 143 1130 1-APNDXA.doc VERTICAL DATUM m KCAS j� �N O, CURB RAMP PER CITY VARIABLE WIDTH PRIVATE DRAINAGE STD. DETAIL 3-8 AND UTILITIES EASEMENT PER PLAT EX. CB _ \ SEE SHEET C5 ALTERATION REC. NO. 8910030400 RIM = 308.56 Y Illlii r I ALSO VEHICULAR AND PEDESTRIAN RIM=312.13 r III; NEW SLATE PATTERNED DRIVEWAY PER REC. N0. 8910031 ,., 11 \ IE=304.38 (15" W) E-305.48 (12" W) i( Illk; TELEPHONE (COLORED) CONCRETE w IE=305.98 (12" S) ;i INi; ' J—BOX WALKWAY PER ARCH. / 1111 IE=304.3 (5 ) PLANS / EX.. SSA4 '' 8 1 a. IE=305.18 (12" E) _ --' ry 4z;� \ 3;` 4 _ Ili `•, _. _ o Cr - ca11LL!4 ,: ? �� /_ jiF ff r G�{VC.:74Vea� -. o >3 - 0 EX. WATER j '3 "y`��-'ss VALVE >�I ;> Ij '�.5�� ., X __ -_ `•'^'r -"' C%y '% �'_ � `tJ,^ Jry N ._.. }F.)' 1 It .v c. 1r1 •' 4l y i i I �� t~~ J•'u'^^ Q J a- ci w w a W z Z O Q O F_ =) mow() C� OC J < Q r Z 0 Q M C'7 0 d' 00 r 0 UW°� 00 z 5 z cl) cf) O Z z W Z > w zQL � t � �}. tOw > J 0 J N M m a 0 U Q sll Z O 1 _ I � y m O QWI Y O O N o m Y C O o m as o U ¢ 0 u J y it> rl Q Z a r e «O o `c Z L 0 GENERAL NOTES 1. ALL CONSTRUCTION SHALL BE IN ACCORDANCE WITH THE FEDERAL WAY CITY CODE (FWCC), APPLICABLE ORDINANCES, AND THE CITY COUNCIL CONDITIONS OF PROJECT APPROVAL. THESE DOCUMENTS ARE SUPPLEMENTED BY THE STANDARD SPECIFICATIONS FOR ROAD, BRIDGE, AND MUNICIPAL CONSTRUCTION (WSDOT/APWA), THE KING COUNTY ROAD STANDARDS (KCRS), AND THE KING COUNTY SURFACE WATER DESIGN MANUAL (SWDM). IT SHALL BE THE SOLE RESPONSIBILITY OF THE APPLICANT AND THE PROFESSIONAL CIVIL ENGINEER TO CORRECT ANY ERROR, OMISSION, OR VARIATION FROM THE ABOVE REQUIREMENTS FOUND IN THESE PLANS. ALL CORRECTIONS SHALL BE AT NO ADDITIONAL COST OR LIABILITY TO THE CITY OF FEDERAL WAY. 2. THE DESIGN ELEMENTS WITHIN THESE PLANS HAVE BEEN REVIEWED ACCORDING TO THE FEDERAL WAY ENGINEERING REVIEW CHECKLIST. SOME ELEMENTS MAY HAVE BEEN OVERLOOKED OR MISSED BY THE CITY PLAN REVIEWER. ANY VARIANCE FROM ADOPTED STANDARDS IS NOT ALLOWED UNLESS SPECIFICALLY APPROVED BY THE CITY OF FEDERAL WAY, PRIOR TO CONSTRUCTION. 3. APPROVAL OF THIS ROAD, GRADING, AND DRAINAGE PLAN DOES NOT CONSTITUTE AN APPROVAL OF ANY OTHER CONSTRUCTION (E.G. DOMESTIC WATER CONVEYANCE, SEWER CONVEYANCE, GAS, ELECTRICITY, ETC.). 4. BEFORE ANY CONSTRUCTION OF DEVELOPMENT ACTIVITY A PRECONSTRUCTION MEETING MUST BE HELD BETWEEN THE CITY OF FEDERAL WAY, THE APPLICANT, AND THE APPLICANT'S CONSTRUCTION REPRESENTATIVE. 5. A COPY OF THESE APPROVED PLANS MUST BE ON THE JOB SITE WHENEVER CONSTRUCTION IS IN PROGRESS. 6. CONSTRUCTION NOISE SHALL BE LIMITED AS PER FEDERAL WAY CITY CODE (SECTION 22-1006); NORMALLY THIS IS 7 A.M. TO 8 P.M. MONDAY THROUGH SATURDAY. 7. IT SHALL BE THE APPLICANT'S/CONTRACTOR'S RESPONSIBILITY TO OBTAIN ALL CONSTRUCTION EASEMENTS NECESSARY BEFORE INITIATING OFF -SITE WORK WITHIN THE ROAD RIGHTS -OF -WAY. B. FRANCHISED UTILITIES OF OTHER INSTALLATIONS THAT ARE NOT SHOWN ON THESE APPROVED PLANS SHALL NOT BE CONSTRUCTED UNLESS AN APPROVED SET OF PLANS THAT MEET ALL CITY REQUIREMENTS AND THE REQUIREMENTS OF KCRS CHAPTER 8 ARE SUBMITTED TO THE CITY OF FEDERAL WAY AT LEAST THREE DAYS PRIOR TO CONSTRUCTION. 9. DATUM SHALL BE KCAS UNLESS OTHERWISE APPROVED BY THE DIRECTOR OF PUBLIC WORKS. 10. GROUNDWATER SYSTEM CONSTRUCTION SHALL BE WITHIN A RIGHT-OF-WAY OR APPROPRIATE DRAINAGE EASEMENT, BUT NOT UNDERNEATH THE ROADWAY SECTION. ALL GROUNDWATER SYSTEMS MUST BE CONSTRUCTED IN ACCORDANCE WITH THE WSDOT/APWA STANDARD SPECIFICATIONS. 11. ALL UTILITY TRENCHES SHALL BE 13ACKFILLED AND COMPACTED TO 95% DENSITY. 12. ALL ROADWAY SUBGRADE SHALL BE BACKFILLED AND COMPACTED TO 95% DENSITY. WSDOT 2-06.3. 13, OPEN CUTTING OF EXISTING ROADWAYS IS NOT ALLOWED UNLESS SPECIFICALLY APPROVED BY THE DIRECTOR OF PUBLIC WORKS AND NOTED ON THESE APPROVED PLANS. ANY OPEN CUT SHALL BE RESTORED IN ACCORDANCE WITH KCRS 8.03 (B)3. 14. THE CONTRACTOR SHALL BE RESPONSIBLE FOR PROVIDING ADEQUATE SAFEGUARDS, SAFETY DEVICES, PROTECTIVE EQUIPMENT, FLAGGERS, AND ANY OTHER NEEDED ACTIONS TO PROTECT THE LIFE, HEALTH, AND SAFETY OF THE PUBLIC, AND TO PROTECT PROPERTY IN CONNECTION WITH THE PERFORMANCE OF WORK COVERED BY THE CONTRACTOR. ANY WORK WITHIN THE TRAVELED RIGHT-OF-WAY THAT MAY INTERRUPT NORMAL TRAFFIC FLOW SHALL REQUIRE AT LEAST ONE FLAGGER FOR EACH LANE OF TRAFFIC AFFECTED. ALL SECTIONS OF THE WSDOT STANDARD SPECIFICATIONS 1-07.23 -TRAFFIC CONTROL, SHALL APPLY. 15. THE CONTRACTOR SHALL PROVIDE AND INSTALL ALL REGULATORY AND WARNING SIGNS (STOP, DEAD END, NO OUTLET, STREET NAME ETC.). PER LATEST EDITION OF "MANUAL ON UNIFORM TRAFFIC CONTROL DEVICES" (MUTCDj. 16. ALL UTILITIES SHALL BE ADJUSTED TO FINAL GRADE AFTER PAVING ASPHALT WEARING COURSE. 17. ALL FILLS REQUIRE DENSITY TEST AND SOIL REPORTS. 18. ROCKERIES ARE CONSIDERED TO BE A METHOD OF BANK STABILIZATION AND EROSION ONLY. ROCKERIES SHALL NOT BE CONSTRUCTED TO SERVE AS RETAINING WALLS. ALL ROCKERIES SHALL BE CONSTRUCTED IN ACCORDANCE WITH KCRS DRAWING NUMBERS 19, 20, AND 21. ROCKERIES MAY NOT EXCEED (8) FEET IN HEIGHT FOR CUT SECTIONS OR FOUR (4) FEET IN HEIGHT FOR FILL SECTIONS UNLESS DESIGNED BY A GEOTECHNICAL OR STRUCTURAL ENGINEER LICENSED IN THE STATE OF WASHINGTON. PROJECT DEVELOPER (OWNER'S AGENT) SOUND VENTURES, INC. 320 18TH AVENUE NE #100 BELLEVUE, WA 98004 (206) 223-9500 PRECONSTRUCT10N MEETING CONTRACTOR SHALL CONTACT CITY OF FEDERAL WAY PUBLIC WORKS DEPARTMENT (253) 661-4131 FOR PRE -CONSTRUCTION CONFERENCE PRIOR TO ANY CONSTRUCTION OR DEVELOPMENT ACTIVITY CALL BEFORE YOU DIG: 1-800-424-5555 UTILITY CONFLICT NOTE: CAUTION: THE CONTRACTOR SHALL BE RESPONSIBLE FOR VERIFYING THE LOCATION, DIMENSION, AND DEPTH OF ALL EXISTING UTIILITIES WHETHER SHOWN ON THESE PLANS OR NOT BY POTHOLING THE UTILITIES AND SURVEYING THE HORIZONTAL AND VERTICAL LOCATION PRIOR TO CONSTRUCTION. THIS SHALL INCLUDE CALLING UTILITY LOCATE 0 1-800-424-5555 AND THEN POTHOLING ALL OF THE EXISTING UTILITIES AT LOCATIONS OF NEW UTILITY CROSSINGS TO PHYSICALLY VERIFY WHETHER OR NOT CONFLICTS EXIST. LOCATIONS OF SAID UTILITIES AS SHOWN ON THESE PLANS ARE BASED UPON THE UNVERIFIED PUBLIC INFORMATION AND ARE SUBJECT TO VARIATION. IF CONFLICTS SHOULD OCCUR, THE CONTRACTOR SHALL CONSULT BARGHAUSEN CONSULTING ENGINEERS, INC. TO RESOLVE ALL PROBLEMS PRIOR TO PROCEEDING WITH CONSTRUCTION. CONTRACTOR SHALL BE FULLY RESPONSIBLE FOR OBTAINING PERMITS FROM THE WASHINGTON STATE DEPARTMENT OF NATURAL RESOURCES FOR REMOVING AND REPLACING ALL SURVEY MONUMENTATION THAT MAY BE AFFECTED BY CONSTRUCTION ACTIVITY, PURSUANT TO WAC 332-120. APPLICATIONS MUST BE COMPLETED BY A REGISTERED LAND SURVEYOR. APPLICATIONS FOR PERMITS TO REMOVE MONUMENTS MAY BE OBTAINED FROM THE WASHINGTON STATE DEPARTMENT OF NATURAL RESOURCES, OR BY CONTACTING THEIR OFFICE BY TELEPHONE AT (206) 902-1190. WASHINGTON STATE DEPARTMENT OF NATURAL RESOURCES PUBLIC LAND SURVEY OFFICE 1111 WASHINGTON STREET S.E. P.O. BOX 47060 OLYMPIA, WASHINGTON 98504-7060 UPON COMPLETION OF CONSTRUCTION, ALL MONUMENTS DISPLACED, REMOVED, OR DESTROYED SHALL BE REPLACED BY A REGISTERED LAND SURVEYOR, AT THE COST AND AT THE DIRECTION OF THE CONTRACTOR, PURSUANT TO THESE REGULATIONS. THE APPROPRIATE FORMS FOR REPLACEMENT OF SAID MONUMENTATION SHALL ALSO BE THE RESPONSIBILITY OF THE CONTRACTOR. MAPLEWOOD OFFICE BLDG. A PORTION OF SECTION 20, TOWNSHIP 21 N., RANGE 4 E., W.M. FEDERAL WAY, WASHINGTON N - - - -- _ 3620'00 _ __ _ ------------ .9 - 4903I .00 I y + as ac _------- _ - - - - - ---------- 1ST WAY SOUTH (MINOR ARTERIAL) _ __ _ _ - ----- --- --� -- - ----- a ----------------- ------------ - LEGEND; PROPOSED EXISTING TYPE II CATCH BASIN TYPE I CATCH BASIN STORM DRAINAGE LINE SANITARY SEWER MAHOLE SANITARY SEWER LIE WATERMAIN CONTOUR ROCKERY SPOT ELEVATIONS STANDARD ASPHALT PAVEMENT CONCRETE SILT FENCE DRAINAGE DITCH LIMITS OF CLEARING ROCK CHECK DAM SURFACE FLOW DIRECTION ■ -------100------- C-SCAR 100.0 LEGAL DESCRIPTION LOTS 13 THROUGH 15, INCLUSIVE, WEST CAMPUS OFFICE PARK DIVISION 5, ACCORDING TO THE PLAT THEREOF, RECORDED IN VOLUME 116 OF PLATS, PAGES 62 AND 63, IN KING COUNTY, WASHINGTON, AS AMENDED BY PLAT ALTERATION OF WEST CAMPUS OFFICE PARK NO. 5, ACCORDING TO THE PLAT THEREOF, RECORDED IN VOLUME 148 OF PLATS, PAGES 57 AND 58, IN KING COUNTY, WASHINGTON; TOGETHER WITH EASEMENTS FOR PEDESTRIAN AND VEHICULAR ACCESS GRANTED UNDER RECORDING NUMBERS 8910031149 AND 8910031151. SURVEY DATA BASIS OF BEARING PLAT OF WEST CAMPUS OFFICE PARK, DIVISION 5- MONUMENT LINE IN SOUTH 340TH STREET, N53.40'00"W BENCHMARK NORTH RIM OF MONUMENT CASE AT INTERSECTION OF SOUTH 336TH STREET AND 1ST WAY SOUTH, ELEV.=304.52 VERTICAL DATUM: KCAS SITE DATA: SITE AREA = 2.53 ACRES IMPERVIOUS AREA = 1.72 ACRES (82.5% SITE AREA) EARTHWORK QUANTITIES CUT: 500. C.Y. FILL: 500± C.Y. MTs PANTHER LAKE & ry sr c'9M,o� rn S QR 3 S. 348TH ST VICINITY MAP NTS 1 SURVEY INFORMATION PROCEDURE INARRATIVE A FIELD TRAVERSE USING A "SOKKIA 3100" TOTAL STATION, AND "SDR-33' DATA COLLECTOR SUPPLEMENTED WITH FIELD NOTES WAS PERFORMED, ESTABLISHING THE ANGULAR, DISTANCE, AND dF_RITCAL RELATIONSHIPS BETWEEN THE MONUMENTS, PROPERTY LINES, AND TOPOGRAPHIC FEATURES AS SHOWN HEREON. A 'LIETZ B-2A" AUTOMATIC LEVEL WAS USED TO CHECK AND ESTABLISH THE ELEVATION OF BENCHMARKS AND CONTROL POINTS. THE RESULTING r"...A MEETS OR EXCEEDS THE STANDARDS FOR LAND BOUNDARY SURVEYS AS SET FORTH IN WAG 332-130-090. DATES OF SURVEYS A FIELD SURVEY BY BARGHAUSEN CONSULTING ENGINEERS, INr,. CONDUCTED DECEMBER, 2003. ALL MONUMENTS SHOWN AS FOUND WERE VISITED AT THAT TIME. HORIZONTAL DATUM - BASIS OF BEARINGS WEST CAMPUS OFFICE PARK NO. 5, RECORDED IN VOLUME 116, PAGE 62 AND 63, PLAT RECORDS OF KING COUNTY, WASHINGTON. UTILITIES UTILITIES OTHER THAN THOSE SHOWN MAY EXIST ON THIS SITE. ONLY THOSE UTIUTIES HAVING SURFACE EVIDENCE AS OF THE DATE OF THE FIELD SURVEY (DECEMBER 2003) ARE SHOWN HEREON. FLOOD ZONE ZONE "X" PER FLOOD INSURANCE RATE MAP COMMUNITY -PANEL NUMBER 53033C 1250 F, DATED MAY 16, 1995. (AREA DETERMINED TO BE OUTSIDE OF 500 YEAR FLOOD PLAIN) ZONING AND BUILDING SETBACK THIS PROPERTY IS ZONED 'OP" (OFFICE PARK) PER FEDL'=.L WAY CITY CODE 22-826. "FRONT YARD SETBACK: 25 FEET IF ENTRY IS VISIBLE FROM R.O.W. AND FRONT FACADE IS 15% GLASS; 35 FEET IF LANDSCAPE BUFFER AND STORMWATER FACILITIES ARE LOCATED IN THE FRONT YARD; OR 50 FEET IF PARKING AND DRIVING AREAS ARE LOCATED IN THE FRONT YARD. PROJECT AREA TOTAL AREA = 110,373 S.F. OR 2.53 ACRES. EASEMENT NOTES V) M m w a LEGAL DESCRIPTIONS, EASEMENTS, RESERVATIONS, RESTRICTIONS, AND OTHER MATTERS DF RECORD WERE DERIVED FROM A TITLE REPORT PREPARED BY FIRST AMERICAN TITLE INSURANCE COMPANY, THEIR ORDER NO. NCS-56251-WA1 DATED NOVEMBER 24, 2003 AT 7130 A.M. PLEASE REFER TO THAT DOCUMENT FOR PARTICULARS OF AGREEMENTS, CDNDIT:u,,F AND TERMS OF OTHER MATTERS OUTSIDE THE SCOPE OF THIS SURVEY. SPECIAL EXCEPTIONS 5) RIGHT TO MAKE NECESSARY SLOPES FOR CUTS OR FILLS UPON SAID PREMISES FOR 1ST WAY SOUTH AS GRANTED BY DEED RECORDED UNDER RECORDING NO. 7402270419. NOTE: THIS INSTRUMENT IS A CORRECTION OF KING COUNTY RECORDING NO. 7306070524. SPECIFIC AREAS FOR SLOPES NOT STATED. 6) RESTRICTIONS, CONDITIONS, DEDICATIONS, NOTES, EASEMENTS AND PROVISIONS CONTAINED AND/OR DELINEATED ON THE FACE OF THE PLAT OF WEST CAMPUS BUSINESS PARK DIVISION 5 RECORDED IN VOLUME 116 OF PLATS AT PAGES 62 AND 63, IN KING COUNTY, WASHINGTON. EASEMENTS DEPICTED HEREON. 7) RESTRICTIONS, CONDITIONS, DEDICATIONS, NOTES, EASEMENTS AND PROVISIONS CONTAINED AND/OR DELINEATED ON THE FACE OF THE PLAT OF WEST CAMPUS BUSINESS PARK DIVISION 5 ALTERATION RZ,,ORDED IN VOLUME 148 OF PLATS AT PAGES 57 AND 58, IN KING COUNTY, WASHINGTON. EASEMENTS DEPICTED HEREON. 8) COVENANTS, CONDITIONS, RESTRICTIONS AND/OR EASEMENTS RECORDED UNDER RECORDING NO. 8011120535. (PORTION GRAPHICALLY DEPICTED) SEE DOCUMENT FOR BUILDING SETBACKS. 9) AN EASEMENT, INCLUDING TERMS AND PROVISIONS CONTAINED THEREIN RECORDED UNDER RECORDING NOS. 8910031149 AND 9712241904 FOR VEHICULAR AND PEDESTRIAN DRIVEWAY ACCESS. DOC. 9712241904 CONVEYES AN EASEMENT INTEREST IN A PORTION OF LOT 18 OF SAID PLAT TO THIS PROPERTY AND OTHERS. 10) AN EASEMENT, INCLUDING TERMS AND PROVISIONS CONTAINED THEREIN RECORDED UNDER RECORDING N0. 8910031150 FOR VEHICULAR AND PEDESTRIAN DRIVEWAY ACCESS. (GRAPHICALLY DEPICTED) 11) AN EASEMENT, INCLUDING TERMS AND PROVISIONS CONTAINED THEREIN RECORDED UNDER RECORDING NO. 8910230850 FOR ELECTRIC TRANS- MISSION AND/OR DISTRIBUTION SYSTEM. THIS IS A "BL"ET EASEMENT' 5 FEET ON EACH SIDE OF FACILITIES AS CONSTRUCTED OR TO BE CONSTRUCTED, EXTENDED OR RELCOATED. 12) AN EASEMENT, INCLUDING TERMS AND PROVISIONS CONTAINED THEREIN RECORDED UNDER RECORDING NO. 9002271130 FOR UNDERGROUND COMMUNICATION LINES AND ABOVE GROUND TELEPHONE EQUIPMENT AND CABINETS. (GRAPHICALLY DEPICTED) 16) AN EASEMENT UCENSE, INCLUDING TERMS AND PROVISIONS CONTAINED THEREIN RECORDED UNDER RECORDING NO. 9006220951 WHICH ALLOWS FOR THE RIGHT TO ENTER TO INSPECT A BYPASS METER. THIS LICENSE ALSO COVERS OTHER PROPERTY. 17) AN EASEMENT, INCLUDING TERMS AND PROVISIONS CONTAINED THEREIN RECORDED UNDER RECORDING NO. 9006220952 FOR WATER FACILITIES. (PORTION ON -SITE GRAPHICALLY DEPICTED) 18) AN EASEMENT, INCLUDING TERMS AND PROVISIONS CONTAINED THEREIN RECORDED UNDER RECORDING NO. 9007110930 FOR SEWER FACILITIES. (GRAPHICALLY DEPICTED) 19) COVENANTS, CONDITIONS, RESTRICTIONS AND/OR EASEMENTS RECORDED UNDER RECORDING NO. 9901131504. INDEX TO SHEETS: C1 COVER SHEET C2 SITE PLAN C3 GRADING AND STORM DRAINAGE PLAN C4 GRADING AND DRAINAGE NOTES AND DETAILS C5 TEMPORARY SEDIMENTATION EROSION CONTROL PLAN C6 TESC NOTES AND DETAILS C7 SOUTH 340th STREET CHANNELIZATION PLAN C8 SANITARY SEWER AND WATERMAIN EXTENSION PLAN MAY 2 7 2004, A. WAS w Co 9 O o 0 U °) (nCO0 Er W Z Z Lu Z Q L Q Z W 0 co Cn O J N m O LL 0 7 CO U Q z .° La Qa m a Y o o U) m 0 C Y 2 O 2 O `d o U o S w _z> z w p 9(n LIJ a Z x L o� Z w Q O N O rn ONO cj z- Z (ND I 000 I W Z w Ln Ln z E5 1 N Cs4 w - � CoLZNLo N 5;U I `< 4 CO E oF�rS�NALTEFa�\�� z 0 EXPIRES 6-23-04 � File: P:\11000s\11301\engineering\11302-01.dwg Date/Time: 05/05/2004 15:58 Scale: 1=50 bWO1103tOn Xrefs: z11301-b,pot-t,zll3Ol-s,zll3Ol-t, SITE PLAN I Ii ,I ii f NO. 9002271130 ..... if ' E''.X. CB, TYPE 1 RIM-299.20 tli iE=294.85 (12' IE=295.00 (12 IE=294.60 (.15,. Q \ n' IE=295.61 (120 N) 10 , if ; t ix ; g� �u f f $ if if. f z , t 1„ r N !N If � f 1 ?il Ccr �J p 4N f `f N ffi I 'o EX. CB, TYP= 2, • :m=312. 1 3 E=305.48 (12" W) iE'= z05 98 Q 2" S) IE=305.18 t 12" E) VARIABLE WIDTH PRIVATE DRAINAGE AND UTILITIES EASEMENT PER PLAT -'fEI..EPHO'NE� ALTERATION REC. NO. 8910030400 Box \, ALSO VEHICULAR AND PEDESTRIAN DRIVEWAY PER REC. NO. 8910031149--\ -- -- - .- f 1' 3. ct EX. 10' WATERMINK EASEMENT PER RECREC� r r` 6 �y o � PE 1RENO.S 0�1093EME _...._.._� .-........ i 1 CAP/rr ...EX CB 2 — 07 _ t; E=305.19 0 G» SE) t! f 7' UTILITY EASEMENT i LTERATIO PER PLAT & A REC. NOs. 8011120656- & 8910030400 �! I ( If - - 210' EX. SDMH 'i i /1 ___._.._..... _... _._ RIM=300.14- IE=293.32 ('12" NW) IE=294.89 (12" NE) Ip Hr I j j a ;; IE=294.75 (it" S) (12" PIPE 'W/ 8" INLET) �► Io i IE:=29&96 '12" VE.RT.? I ,?i it EX. CB „' i RIM^ 299.88 ) (E=295.5' (12 SVI ? i If "I i EX. B, T' PE 1 ; { JI 'rfi t SWALE�� Rite--29Q.96 Is_=286.48 (15" N' tlGo I_=286.28 (15" SE) n li fI / EX. RAILROAD TIE 71►`' = F= : .:1 _ j I ;1 RETAINING WALL --- r -- f' n N\ EX. TELEPHONE �..!)lilt �`- - Ell 367p pp. E - _._ -_ __ __ EX, CB, TYPE 1-_— - � ___ ✓ u.7. y —_ ........_........ sae r ! RIM=290.97 j "®-,a ------ � IE=2r37.67 15" K t __< - --- -- -- - - p r, ----- - ff-287.47 15" S / ____<_<_ -- --------- - - --- ---- -- -- -- - / - --- - IE--tR9.87 115 NN) j �_< < - - - - �� X" CONCRETE `_'__<______ a '1 / R•36.00' RE''s'AININGEX. STREET STREET LIGHT j WALL N ON 4" SOUA!!� ------- --- IVPLANTER• PLANTER - WOOD POST' - � --- _--LN 361�- --------------- - -----------teT WAYS ------------------------------ N — -eF r ' RIM=308.56 'r IE=304,3 (15" W) E=304.38 (15" E) .-.---__ r X. LOT _ n / LIGHT \ `n , _rrr- %frrr-' t,> 7 OF 19 PARKING SPACES @ 1 EXCLUSIVE TO ADJACENT BUILDING 6' STORM EASEMENT BSBL ' PER PLAT ALTERATION r , REC. NO. 891003MO t 12 OF 19 PARKING SPACES EXCLUSIVE\ t,11 i °" t TO ADJACENT BUILUILDING Ex. cli W.IM-304.71 '; -Al ', IE `299.86 W) 9.84 (15" E) i 1 ',ttt 10' WATER EASEMENT , PER REC. NO. 9006220952 \ - t1 STO M EAS MENT PER 1 y4 %\PLAT & ALTERATION REC. i ��NOs. 8011120656 & ja9lA036400 � U y....q.__._.._..�_EX. LCrr,\ I..IGHr 2 S'' ,•p" 23' DRIVEWAY EASEMENT \ j',1 ;$ PER REC. NO. 8910031150 — t11 >n t i, l;u _--�---10' WATER EASEMENT ju PER REC. NO. 9006220952 i JA ;11 i \ 0;let 'E 1 1 'a IE=296.90 (15" `I>'? 1 1 V IE=296.92 ?15" Jj .!- '-- � E.19 (15H SW) SE-296.12E 10' STORM EASEMENT PER ` T> ,.2-96.1#":,'12PLAT &ALTERATION REC. EX. C8 NOs. 8011120656 kl,-` - 11891003041 ' Ex. FLAG POLE n'i C✓ �%``°J "r i._J .��_ _. _—MrJ''�t�,��E� i1 - m--d.i�-:.-... tt- /�i S __.._-- cif:'L£ONCRETE u -- ------------7 -- _ __ g_________ _____-_------ - 30° DRIVEWAY EASEMENT "___ __ ____ _ = PER REC. NO. 8910031150 -k---=-_---_-------------- -------'______">___= 10' PACIFIC NW BELL _= 7� UTIUTYc WWHGNE !' EASEMENT PER REC. PER PLAT NO. 9002271130 _--___---- -- REC. NOs. 8011120656-_--------- & 8910030400 - ------------------- _ - R --------------------------------------------- RESUBMITTED MAY 2 7 2004 0 Al L I? I _o Q u— O0 J Q Q IL � r 00 0 O O O U w OD °) a 0 Z Z W Z f1) Qui Oco w J N W m 0 0 M U a N II z 0 0 Q U YI C o_ � o m a »• o O U Q F- z� Zw p N N w x a W Z w Q Z gz 04 QON0000 zcr Co 00 x rn Co III M � z N I �3un1n I ww OZ w' 0000 W Vf a z _ w d 8 �5 -ile: P:\11000s\11301\engineering\11301—o.dwg Date/Time: 05/27/2004 09:04 Scale: 1=30 bwolloston Xrefs: z11301—s,zII301—t,zll301—b,pat—t, OD a T 0 9 37819 p �e E fs 01 STERN z :i t `o S�ONA L 6 o - V) N EXPIRES 6-23-04 _ ,, VARIABLE WIDTH PRIVATE DRAINAGE _ VERTICAL DATUM KCAS _ -r= AND UTILITIES EASEMENT PER PLAT / ? SEX. CB IIIPI ALTERATION REC. NO. 8910030400 / _ RIM=312.13 +f I Illd ALSO VEHICULAR AND PEDESTRIAN _�� EIM304.386(15" W) IE=305.48 (12" W) i; IIIrI TELEPHON� DRIVEWAY PER REC. N0. 891003�49 3n>3 11 i IE=304.38 (15' E) j, III{i 4 J-BOX NEW SLATE PATTERNED / 11 E=305.98 (12" S) Idpl I \ (COLORED) CONCRETE E=305.18 (12" E) i'f III I !'. WALKWAY PER ARCH. / / X EX.. SS u A4Fh 3` 11 PLANS, j�, III '�,tj;.. --� �,� �z-t- _ _� 3r; _ °-- x . -"- - SI I1�_. ___� `•4 _ __ _ _ ___ .. _.____...__. SAWCUT EXISTING i ASPHALT PAVEMENT. - r 3 �� a7 - N -- CON = "WA EX. WATER Q.v Yr, 1NAlK_3�J,1115'"sm VALVE i' fi •� . "1 X r;�,�-..... r - - -��C. C4NC y, JAY 1',� _ w n 1 14.1 .---�. F f .x r ys _ -3J�9 tl II, ,�-r' IkI EX. WATER V LVE I a ,Cg 3as. > a s `° r>- I s3 I N 4 X SF' }; I I dP. N � •?� --_ r � '', . :_ ) C S�. x , Z �;i;" i"- �.` •�s � Vol, �`- '; 1 II 38 54' '= _ Ua "°9 + I' " CATCH BASIN TABLE CONC Pb'D IE II 'f l 38 E lee .�� 11 ' ..�5'20_ E 3S e_'z 1 1 ;1 i C }� ;1 11 I V) K m m wD w a 0 � a m a � a 0 mC�' om �o L o:e ---- _ 24 PAVEMENT - --- ---ly_--;�� i; <;'yd c 10 STORM EASEMENT PER V PRIVATE DRIVE l�LF 6-PVC- rt dALTERATION REC. o II ^ " * s ,;1� � a � 6 � 1WOa.r 011120656 & , f ' 3D' I u .' ,`:; a: ,� �., ,a3w',' E,,,. ..E.. .r, j' x, ,. _ v, E: x, ,' ..:1 I ,K < BIOFILTAATION SWALE „: �.a52 LF 12 PVc sbR-35 a.5% "` 1.75% r. �, € , 1 1 " Q -- Q30400 ,r I LI ,Z ... , ,:,,. .. ,. „. BL, K Y1+ p{,r 4 `b 1'�3t�,pi - °,$ ',,.�_ 1 ^IIII r .., .., .;4 :: v .,, - ,r;,f`,_ S e. Ey, �,,, �.*a.YJ :?. .\{ 11 t II °L\p .J3 - .,y` < --- i126 LF X 6.5 WIDE 1.21/) I I;; I' °: 00.8 - a .' s'MRM 11 11 „ ---- -- -- ---------- EXISTING O LF 6' PVC u , a ! n .0 ,iF ,n's. � .... •. 6" PVC w � .g ...� I li 3 TO BE REMOVED °r 1 1 04 5 SIDEW ll,} � oo '.I � _ `� � _ ________ ______ T - a� LIGHTO ? I , -• 1. � II i. I - ..�.' '� d r:. c^ ; 4� ... 7 YD Y+ _. ...�1 {. X J RIM=29S`.8 RH a 3°u"S i; _ . . EXISTING HYDRANT TO BE 6" PVC FOOTINGYD X / YD - d 11 ` I 1 4 " EXISTING • ,+ YD ABANDONED AT THE SERVICE "0! '''!)RAIN COLLECTOR': , ' `RiIA 0 wx r •� X 'v X 3C RIM=299.83'�RIMMs30�. @° h S�°r' jl k ;I 3' DRIVEWAY EASEMENT 1 j o • r5 !.> J 1 PER REC. NO. 8910031150 f.. }. 'l MAIN AND HYDRANT SHALL BE (SEE PLUMBING PLANS) u/y 1a`yg5 r r r BUILDING 111%fldt aw i i} I III ' �'I �" Yr SALVAGED TO THE DISTRICT. ho '(x ` 20 LF 8" PVC " 2 ' , 9 II'r. r A, I d YD �• l�.D�� ♦ YD UnderdrAln 't> I EX. CB TO BE REMOVED RIM=300.06 1 , RIM=300.20 {, W1'� ✓ ` 4 11 I I N TE SL z•I ICI f' �� , rEE^„R` RIM=300.83 ISH FLOOR III „ SAWCUT LINE TYP. 1��3 IIII I J, �, IE=297.13 12" N) A 11 k I i' (MATCH EX. GRADE) 1 1 -4' " = SE) C030254 CURB SIDEWALK 1111W✓1vW (,� B .1�2.96.97 12 • URB „ �' II brafwgl2 L. ti I rI !f IE-297.0%"T� fJW� ( �'! 1' I ` / II II = ` - - ROOF DRAIN SYSTEM - r`f•� 1 r ,, ' IIrI ,y / 9 { ;,, _._.__.. n i ' 1 jy1Qg{ ,ct � CAAn4eJ S � �i 11'^> r �? E 35 O !o NEW SDCO R DRAIN SEE-PLIIMSINCi. PLANS R.D. t I -_ } �� 302.E .,�r 11 ' i _ 2 ---P WATER EASEMENT , I S. RIM=302.3 TYP. � _ _ � \� I' " G v� _ ` °„ l ♦ 302.8 u 1 1 1 n 1 g IE =299.0 �, 1 �,�.(-1 I EC. N0. 9 5 r rl , E" 30 .75 5 'r✓b p r �''/'°' Ivt s S e5 }Io`1 4 ` r t (�J6 �CCs Ih { O}, ' �Ir ; r - I' c� Tr 1 PROPOSE �' T' � "_ �!{ I I} H i I f �a 1 / 53 LF 6" PVC ROOF (t1 i^N� I ■ 302.6 r r"t. 1 . 1 r - "^ - y, . I hp It- ,;. 30 5 DRAIN COLLECTION ®2% MIN �� 302 0 1 EX. WATER Z Q � ^J a_ W w C� Z Z O af Q O I I.I (A � Q Q r Z o a cl U W00 V/ 1�_ m 0 m Z Z W ui Z Q O y.+ > 0 J O N cv) _j m p F.- 302.5 APPROXIMA S °. F x . w - !, } t VALVE i �� w EXTRUDED '� `'� , v. , " C�BT1r`IG-•D - N J• '. I I 1 { 3 r CONC. CURB v OF NATNE FIL MATERIAL X u °r r F" 1 Ji " • • w DI GE ® 2% MIN. 3 ( 1( 1 I 0 S1DLWALK � � w FILL NATIVE °j � o= I I � r- NEW CONCRETE 6 PVC FOOTING I ■ A5 1 0 ;D EX. WATER I 1 NIA ' 5 DRAIN COLLECTOR i ... L' .. I VALVE .300.6 HP.� L I WALK � MATERIAL ERIAL . TERIAL `� ° I 1 7?I 1 it i 1 _ 301 tT (SEE PLUMBING PLANS) i X I ( IPraY E I r' _ _ ( 'aG 302.1 1 I I' g>,;. 1 -.. ,3ca, EX. FIRE PROTECTION b o CB 8, TYPE 1 I" L� } _ 25 SERVICE VALVE d c I'*�E; i I T! :� o N U a W/ BEEHIVE GRATE c ! !. Ir7 •a2 1 I �r-' , - 5T , X C 8 ti u e z I I � "' 301.65 t_ � cam, .P � ; rl .t 3 s .� � z v11CI I `� o 301.5 3 3a1.as I IS G Qa -: 3'�' RANT ,_ la 1 2 4 EX. HYDRANT = q=== 7,3 i< Y x' < 3 1 'I i� I _ - •I 302.5S3;c. O 3 r • p? .33 1 i t-,2S II G & - P X. CB RIM=301.23 6' DE OVERFLOWS LLW Y - WI 11 � I I / �� ' ,�' Ez '', � I; ' `� m zR, ;a C NC E'f W LK. a. 4 a I i �� :� r 'p' t IE=296.90 15 W) a o 0 ' I . ,3q�1 � {"` __ �C IE=296.92 �15" N .5 E i i :� , ; u � �. � : �" ,� �: v� �. 3Q ''°:l .� EEe < w " �:-: - 'GPI J Cv � C1 .....�N � ■ a . RIM=290.96 EX. CB RIM=301.02 o `a IE=286.48 15" N L I f _.i. j ,r`i, , a �- :, F.:,' ?tip^. I ,_,,r," " .;. t�ta�E;w. s•>v ,v r 'F� :z- O� E=296.19. a•s $W IE=286.28 (15" SE) �.� ) z� IE-286.28 (15" SE) _ EX. CB TYPE 1 � ,��" ' w t r 1 „' %a�"� t � � r I.r'"., 3012 �.. �� 3 y•r _,, ,tr• >fU „` 1 �» U'J kI •.J• -'ias ysagY' i.1 4„rAt/ '.� ''!.3.j'tc � Oj, s. -�-•- iti.,.r...,rl,, IE=267.67 15" W I Q ' :.. --_: � x Ea?i;„��" : , tK Et„ , ,, . , ..,, x a�� 302.0 TC IE=287.47 15" S ? °' I I a \ s 1 301.5 TP ( ) , p \ YI .,, �� LF 2" r ❑ .. 00.5 a w„ ■�w. I 1 PV IE 287.87 (15 N) ,. rr ,. ..,� =, _'-- 35 � rI• R., S. i / ^n-....s• i 0:5%a ° ;,. z. r , ':. ?r x,, ... �E,'r\�^r: ,.' .. &,' Q� r'.5.w-•.--- •3 �. \ f+- ,, 15 ° �f ; ,, ... �.. ",,r �'„ �, , r•;" ,� ��, ' , ' _ f _ E, w - T ,n E 1 - � h W - x r ,�, /,.. <. 2 „ -._._ `C'' 8 PVC SOR 35 Q - „ .,. ..,:::.4.. Er -, %c _ w 13 LF 12 PVC ,, r . > y. � G.9 tp, �;:y ; F# �=7.-�_._ ,. � � , *?�ER.. ,, [:, . , ,. ;' , sm - k w», 6 � `-°<l p n ' rJ � - , Cr 3 7 > m y ,,,,)., MO MENT I,GN. 30 .8 HP < 9� °r = SDR 35 ®0, " I I S> ,, ..;, x'Zx a/�,/n l,,v, } * 's. "'?^:k V^tea , ,,z. x:<tir sH �S ,Cf ,.' ,,,q•„ � cz, -�-$J. Z , n l�r �" Z E q. 30 ,o 1 I Q'� 1� �- , :. Gl.t[' �.: .'csxp , ,•' . •�'§Y , f E r/ ..: ,� Ez ` ,*,. E4,tn .�q,, � �s§ ! .O 9°W i ',>> DI/IgL (n ZQ � 6 2 STORM 4 {a I <. ^\ . n �a �' �r... S �� , ^ '�` .. a ,Y� ••-` \ �' 1• a,,, '� ,:,, EX. FLAG '�Yz1Y1 ae-S Q/1� w FILTER VAULT; POL z i e -- 1., p ° VV/ n Q RIM=293.04 -1 1 _ „ t 1 I _ > . E-(�IN{ �289.84-_ ' . r, �5 . _ r t }�.g - Z_ -� J' is �� a r �, 1 k n f D IN N N O ------ ° 1E _(qUTi=287.54. ER. ILROAD TIE I t) t� - �_� 7 29Ye ,• - ->g- gC �. q O 5. 7n Zr �.� b:. - - ¢ ono N I00\ Z > ---- >' .' AINING WALL ( c4 ''LL• �� (� = a �:; y,. / i�r j„ r.;...�_ - _- -- I a' > `c'� - --_ �- .t', �J= , J j' J �aii Rom; g 6 -- I, - , C CD 0� W W EX. STREET LIGHT i a. ,.� T` -- -� I,_------� '- - _ .... =_-- t2S .\23s.st 2� ¢ I I z c5 ON 4 SQUARE ';; q5 4OIVC� '` II '' y-i� °��-. - - s ----- >211 PG iE-ka o--- o.Gs ,n Ln Z • 298 � aCN WOOD POST -' i a I KV n WD1 -_!¢ 3 _ ` 2a , r c H - -- -- -'" > _ rn w .ci, _ iC-, y : 4 ' ' ....... i 3; Z ...v8. �, .2 ! .. .. �: i n a r IX - -- - 'f� ---> v --___" ~ N N > 3 - s J =€�C -CONCRETE cv z w> EX. TELEPHONE "` - ---� s -- MONUMENT - --a --____ u_{v, i.,,.�". 4 \� ` j _ t•. g .. �.' ...tu3 ,;; , 9G. T.a _-_ MONU a0 Y �}- > ..YH M -ti__ D----rr'-a� -Z __ Cff v 7-J� irk �JV 0� p a.S '1 ___ ' . . -sy - A O MANHOLE �1/OQ==== --- - _ -- - v - -------------- - - 1 - - ----- - SIGN c� n ` t _ _ ______a_ .. --- -- �' P CIFlC 4JW B --- --- --- `, 36. -- - nel mr` R=35.00' --- -- = s� - --9rit�2 ______________ E $ RESUBMITTED t 4 `" _C 5' CONC. W P€R ITMAL ERATION . N�} EMEV 2 ER REC:' ' - _-__________----- ..+------------------- <y �i"S3- AY EASEMENT BE REMOVED 1 t 9 w - - -_________ - -- ---- ---=- r_.? ____-----_------ REC,_NOae10420656 ° __- ___-- - - a R M=300.98 PER REC. NO. 8910031150 0 ON/ 5* COCONC: W .. � .; EX. SDMH (TO s RIM=300.14 SWA i jejuir - _ - _ _____ ___________ ____ - �1 ( \\`� NEW PEDESTRIAN - ---- -- - - - - -- - --- EX. CONCRETE IE=296.36 (12" N) MAY 2 7 9.004. GJ Sb� - _ dc_ BQ194304DO-------------- - -- ----- - ---- TCH < MATCH EX. MONUMENT IE=293.32 (12' NW) IE-294.89 (12" NE) EX. PAVEMENT�s;< a 165` CONNECTION 296.28 MANHOLEPHONE SIGN 0 - 113.92' cra a - - N W/ STAIRS �� ' --- - Q IE=294.75 (12" S) (12" PIPE W/ 8" INLET) -_ k m - z EX. CONC. SIDEWALK L �W - w IE=298.96 (12" VERT.) N 36 2p•00- As / p NEW PEDESTRIAN ___----- --- :tJ - - EX. CB , r s�*E, t -- �ei --- _ CONNECTION ----------------- TO i BE REMOVED zz ,E €` E , uz -------- - --- a2 RIM=299.88 E - ---------------------- - W • T91 �b, N5o ----- IE=295.51 12" SW _` , i ( ) �,� G 2 --- ----------- -- a SAWCUT EX. --------- - w _ �,v ,, _ _w.__ M EET AND MATCH PAVEMENT NEW ASPHALT � �- _-._., ' ``� " ,w 's" �� '�, �;�aE: "�- -a - �;<-- �. _" `" m r ___ PAVEMENT - --- EX. PAVEMENT 3781 Q o ��fs F�/SiER��\�� z' Cri m w -- - - - - -- a t o S/aNA L ENS' .0 N M EXPIRES 6-23-04 U I -:\I IVVVS\1IOU I\CrtyIrI"rlrly\I IJVI-UM.UWy UUlGr I"TIV: VJr VJr LVVY IV:YI JVUIQ. 1-4V VWVIIUJIVII AFCIS. 41 IJVI-S.LI IJV I-1.L 11JV1-V,F/Vl-l. STRUCTURE NOTES 1. THESE PLANS ARE APPROVED FOR STANDARD ROAD AND DRAINAGE IMPROVEMENTS ONLY. PLANS FOR STRUCTURES SUCH AS BRIDGES, VAULTS, AND RETAINING WALLS REQUIRE A SEPARATE REVIEW AND APPROVAL BY THE CITY OF FEDERAL WAY PRIOR TO CONSTRUCTION. DRAINAGE NOTES 1. PROOF OF LIABILITY INSURANCE SHALL BE SUBMITTED TO THE CITY PRIOR TO THE PRECONSTRUCTION MEETING. 2. ALL PIPE AND APPURTENANCES SHALL BE LAID ON A PROPERLY PREPARED FOUNDATION IN ACCORDANCE WITH WSDOT 7-02.3(1). THIS SHALL INCLUDE LEVELING AND COMPACTING THE TRENCH BOTTOM, THE TOP OF THE FOUNDATION MATERIAL, AND ANY REQUIRED PIPE BEDDING, TO A UNIFORM GRADE SO THAT THE ENTIRE PIPE IS SUPPORTED BY A UNIFORMLY DENSE UNYIELDING BASE. 3. STEEL PIPE SHALL BE GALVANIZED AND HAVE ASPHALT TREATMENT #1 OR BETTER INSIDE AND OUTSIDE, 4. ALL DRAINAGE STRUCTURES, SUCH AS CATCH BASINS AND MANHOLES, NOT LOCATED WITHIN A TRAVELED ROADWAY OR SIDEWALK, SHALL HAVE SOLID LOCKING LIDS. ALL DRAINAGE STRUCTURES ASSOCIATED WITH A PERMANENT RETENTION/DETENTION FACILITY SHALL HAVE SOLID LOCKING LIDS. 5. ALL CATCH BASIN GRATES SHALL CONFORM TO KCRS DRAWING NUMBERS 41, 46, 47, OR 48, WHICH INCLUDES THE STAMPING "OUTFALL TO STREAM, DUMP NO POLLUTANTS" AND "PROPERTY OF FEDERAL WAY." 6. ALL DRIVEWAY CULVERTS LOCATED WITHIN FEDERAL WAY RIGHT-OF-WAY SHALL BE OF SUFFICIENT LENGTH TO PROVIDE A MINIMUM 3:1 SLOPE FROM THE EDGE OF THE DRIVEWAY TO THE BOTTOM OF THE DITCH. CULVERTS SHALL HAVE BEVELED END SECTIONS TO MATCH THE SIDE SLOPE. 7. ROCK FOR EROSION PROTECTION OF ROADWAY DITCHES, WHERE REQUIRED, MUST BE OF SOUND QUARRY ROCK, PLACED TO A DEPTH OF 1 FOOT AND MUST MEET THE FOLLOWING SPECIFICATIONS: 4"-8" ROCK/40%-70% PASSING; 2"-4" ROCK/30%-40% PASSING; AND -2" ROCK/10%-20% PASSING. INSTALLATION SHALL BE IN ACCORDANCE WITH KCRS DRAWING NUMBER 51. 8. DRAINAGE OUTLETS (STUB -OUTS) SHALL BE PROVIDED FOR EACH INDIVIDUAL LOT, EXCEPT FOR THOSE LOTS APPROVED FOR INFILTRATION BY FEDERAL WAY. STUB -OUTS SHALL CONFORM TO THE FOLLOWING: A. EACH OUTLET SHALL BE SUITABLY LOCATED AT THE LOWEST ELEVATION ON THE LOT, SO AS TO SERVICE ALL FUTURE ROOF DOWNSPOUTS AND FOOTING DRAINS, DRIVEWAYS, YARD DRAINS, AND ANY OTHER SURFACE OR SUBSURFACE DRAINS NECESSARY TO RENDER THE LOTS SUITABLE FOR THEIR INTENDED USE. EACH OUTLET SHALL HAVE FREE -FLOWING, POSITIVE DRAINAGE TO AN APPROVED STORMWATER CONVEYANCE SYSTEM OR TO AN APPROVED OUTFALL LOCATION. B. OUTLETS ON EACH LOT SHALL BE LOCATED WITH A FIVE -FOOT -HIGH, 2" X 4" STAKE MARKED "STORM" OR "DRAIN." THE STUB -OUT SHALL EXTEND ABOVE SURFACE LEVEL, BE VISIBLE, AND BE SECURED TO THE STAKE. C. PIPE MATERIAL SHALL CONFORM TO UNDERDRAIN SPECIFICATIONS DESCRIBED IN KCRS 7.04 AND, IF NON-METALLIC, THE PIPE SHALL CONTAIN WIRE OR OTHER ACCEPTABLE DETECTION. D. DRAINAGE EASEMENTS ARE REQUIRED FOR DRAINAGE SYSTEMS DESIGNED TO CONVEY FLOWS THROUGH INDIVIDUAL LOTS. E. THE APPLICANT/CONTRACTOR IS RESPONSIBLE FOR COORDINATING THE LOCATIONS OF ALL STUB -OUT CONVEYANCE LINES WITH RESPECT TO THE UTILITIES (E.G. POWER, GAS, TELEPHONE, TELEVISION). F. ALL INDIVIDUAL STUB -OUTS SHALL BE PRIVATELY OWNED AND MAINTAINED BY THE LOT HOME OWNER. STORM DRAINAGE OUTFALL RIP RAP SPECIFICATIONS * RIP RAP SHALL BE IN ACCORDANCE WITH SECTION 9-13 OF THE WSDOT/APWA STANDARD SPECIFICATIONS. RIP RAP TO BE REASONABLY WELL GRADED WITH ROCK GRADATION AS FOLLOWS: PASSING 8 INCH SQUARE SIEVE 100% OR MAXIMUM STONE SIZE 8 INCHES PASSING 6 INCH SQUARE SIEVE 40-60% OR MEDIUM STONE SIZE 6 INCHES PASSING 2 INCH SQUARE SIEVE 0-10% OR MINIMUM STONE SIZE 2 INCHES ** RIP RAP TO BE REASONABLY WELL GRADED WITH ROCK GRADATION AS FOLLOWS: MAXIMUM STONE SIZE 24 INCHES (NOMINAL DIAMETER) MEDIAN STONE SIZE 16 INCHES MINIMUM STONE SIZE 4 INCHES GRASS LINED SWALE SEED MIXTURE: PERFORM ALL CULTURAL OPERATIONS ACROSS OR AT RIGHT ANGLES TO THE SLOPES (CONTOURED). THE SEEDBED SHOULD BE FIRM WITH A FAIRLY FINE SURFACE AFTER ROUGHENING. FERTILIZATION - AS PER SUPPLIER'S RECOMMENDATIONS. DEVELOPMENTS ADJACENT TO WATER BODIES MUST USE NON -PHOSPHOROUS FERTILIZER. "HYDROSEEDING" APPLICATIONS WITH APPROVED SEED -MULCH -FERTILIZER MIXTURES MAY ALSO BE USED. SEEDING - APPLY APPROPRIATE MIXTURE TO THE PREPARED SEEDBED AT A RATE OF 120 LEI COVER THE SEED WITH TOPSOIL OR MULCH NO DEEPER THAN 1/2 INCH. URBAN APPLICATION KENTUCKY BLUEGRASS ADELPHI, BARON, OR FYLKING) CREEPING RED FESCUE PENNLAWN) PERENNIAL RYE DERBY OR PENNANT) PROPORTIONS PERCENT PERCENT BY WEIGHT PURITY GERMINATION 30% 85 80 40% 98 90 30% 95 90 SCALE: 1 "=10' HORIZ., 1 "=5' VERT. III IILI EXTRUDED CONCRETE CURB DETAIL NOT TO SCALE 2" (MIN.) COMPACTED DEPTH - CLASS "B" ASPHALTIC CONCRETE 4" (MIN.) COMPACTED DEPTH -- CRUSHED ROCK BASE o a - 0 0 0 �r 00 + U�o o 0 0 0 0 c� oa C a o 00 0 0 0 °o oQG 0$ 0 0 0LD 0 00 n n nn nnn Unr o On cf-'O NOTE: GRAVEL BASE OR NATIVE MATERIAL REFER TO SOIL ENGINEER'S RECOMMENDATIONS COMPACTED TO 95% FOR SITE PREPARATION & ALTERNATE PAVEMENT SECTIONS TYPICAL PAVEMENT SECTION NOT TO SCALE 6' x 12' STORMFILTER - PLAN VIEW SCALE: N.T.S. GRADE RING (TYP) BAFFLE WALL (TYP) m� Im z 01 o - m � � z 1. UNDERDRAIN MANIFOLD 6' x 12' STO SCALE: N.T.S. Y 'TORMFILTER CARTRIDGE (TYP) (SEE NOTE 2) TER SECTION VIEW 30" 0 FRAME AND LADDER POOL J FLOW SPREADER (TYP) ENERGY DISSIPATOR THE STORMiYATER MANAGEMENT StormFilter U,S. PATENT No. 5,322,629, No. 5,707,527, No. 6,027,639, No. 5,624,576, AND OTHER U.S. AND FOREIGN PATENTS PENDING z z m 0 0 a 0 CENTER LINE CHANNEL 1 O 0oO�O Or,Oo0 !00C( m o O( [(-)o L` 0� oO/ 9 d 30' ( 0 O( 00 O0 0J 0 1000 OO 1 I � 0 1 0 1- 0Y Y omuj m FILTER FABRIC LINER UNDER ROCK PLAN VIEW SCALE: NTS 6' X 12' STORMFILT DESIGN WATER Go Y FLOW R.27PEROW RATE c1s.90RETURN PERIOD OF PEAK FLOWYEAROF a CARTRIDGES REQUIRED9CARTRIDGE ROW RATE 15 GPM GPMEDIA TYPE UTEA; I.E. ETERE 1 289.842' INLET PIPE 2 NA NA NA OUTLET PIPE 28J.54 PVC 12' RIM ELEVATION(S); 293.04 T,O4 ROW LADDER YES ANT -ROTATION BALLAST HEIGHT WIDTH 777=: REQUIRED DIMENSIONS 8' FOR ROCK LINING A+B 12' FOR RIP RAP SEE TABLE 4.3.6A PLACE ROCK 1' ABOVE CROWN BOTH SIDES CHANNEL FOR "A" <, 8' ONE SIDE CHANNEL FOR "A",8' DISCHARGE PIPE I I -III -I f I - LVOR 2' ROCK THICKNESS SEE TABLE 4.3.6A SECTION VIEW A -A SCALE: NTS CULVERT PROTECTION DISCHARGE PROTECTION DETAIL GENERAL NOTES 1.) STORMEJER BY STORMWATER MANAGEMENT INC., PORTLAND, OREGON 800/548-4667. 2.) FILTERS TO BE SIPHON -ACTUATED AND SELF-CLEANING. 3.) PRECAST CONCRETE VAULT TO BE CONSTRUCTED IN ACCORDANCE WITH ASTM C857 AND C858. 4.) STORMFlLIER REQUIRES 2.3' OF DROP FROM INLET TO OUTLET. INLET AND OUTLET PIPING TO BE SPECIFIED BY ENGINEER AND PROVIDED BY CONTRACTOR. 5.) PRECAST STORMFILTER EQUIPPED WTH EITHER CORED OPENINGS OR KNOCKOUTS AT INLET/OUTLET LOCATION. 6.) RECOMMENDED MINIMUM CLEARANCE FOR MAINTENANCE ACCESS. CONTACT SMI FOR OTHER OPTIONS IF A SHALLOWER SYSTEM IS REQUIRED 7.) ANTI-FLOTATON BALLAST TO BE SPECIFIED BY ENGINEER IF NEEDED, BALLAST TO BE SET ALONG ENTIRE LENGTH OF BOTH SIDES OF VAULT. BALLAST MATERIALS TO BE PROVIDED BY CONTRACTOR. 8.) ALL STORMFILTERS REQUIRE REGULAR MAINTENANCE. REFER TO OPERATION AND MAINTENANCE GUIDELINES FOR DETAILS. 9.) DETAIL REFLECTS DESIGN INTENT ONLY, ACTUAL VAULT DIMENSIONS AND CONFIGURATION WALL BE SHOWN ON PRODUCTION SHOP DRAWING. 10.) STANDARD DETAIL SHOWS MAXIMUM NUMBER OF CARTRIDGES. EXACT NUMBER REQUIRED TO BE SPECIFIED ON SITE PLANS. BAFFLE r FLOW WALL - - - SPREADER BALLAST ;I (SEE NOTE 7) I � O � ( - _ _j UNDERDRAIN MANIFOLD 6' x 12' STORMFILTER - SECTION VIEW SCALE: ALS 6' x 12' STORMFILTER - TOP VIEW �1 SCALE: N.T.S. n THE STORMWATER MANAGEMENT StormFilter U.S. PATENT No. 5,322,629, No. 5,707,527, No. 6,027,639, No. 5,624,676, AND OTHER U.S. AND FOREIGN PATENTS PENDING in M m V) C M w a a � U m m It P0 US o Lo o z RESUSMITTE MAY 2 7 2004 S V Q _Z Q 9J o c W L,L cc 10 00 0 C'aWa a(j'ca� c V O r- Z Z Q `p i lk O O OT� UW°0'_ Z = Z CO 0 D Z Z ~ W = Z Q Q Z Q W p"'"'� O J /N W a) E.L. E y O O C 2 0 U1 ! U Z 0 TA Q m 6: 0 O U) .Ky. 3 S, 0 ICI Q 2 In m 0 0 0 U � o w V � ZZz Q N J LIJ a Q z X Q z w LLJ LI_ g Q N O N ONO z Lr - z rn L0 00 w z N I i ww Ln N Ln cli 5 Z w Fj C14 00 2:Y � U File: PA 11000s\11301\engineering\11301-DI.dwg Date/Time: 05/05/2004 16:02 Scale: 1=10 bwolloston Xrefs: z11301-b,pat-t, iHEET DATE w Go bZ BY REVISION 6' X 12' PRECAST STORMFILTER 112 PLAN AND SECTION VIEW STANDARD DRAWING DESIGNED BY: JHL DRAWN BY: dHR DATE: PROJECT NO.: DRAWING FILE NAME: -- MANAGEMENT 110s 212 2 BY: JHL DRAWN BY: 6' x 12' PRECAST STORMFILTER DETAILS AND NOTES STANDARD DRAWING ■A/AeEIENT one, (WO) US-466i 00 �Fs�FC1s'iER��`� S/NNA z M m 1 L ENG n T. V) o 0 EXPIRES 6-23-0-� EX. CB HIM .a RIM=308.56 uiii g TELEPHONE,. TEMPORARY CONSTRUCTION ENTRANCE J<,,� II IE=304.38 15 W) TUC PER DETAIL SHEEP _ II IE ,304.38 15" E) [J-BOX- 3 EX::SM _= II v15�a1i h� �rA�( dij �I nll; 4 _ R1M-307 64 0 LID - _ _- rb 4 �h. - \ J4 l "'.: -__ C V _ EX CB "'x - I �i IE=3 ° - - 05.19 (12" SE ��_ To 3 3�y' u} 1 c �r(eSa�% in �+ I ` ° 4. o - _ - - 312 ) o• oys> ? ,S. E if be r'�s�a[ 1 o II -- �o X. WATER � a� I9 ' °n(�,,p ° r.�=- -- __- , a % 3 y>1g ; VALVE _ _. - l- U h wa/�CcP� %f wry :> off{' o�=,, ,- Og �c I - 1 ' 7_ _ a r k) r� _ o o °V°Qo �o o -[�/\ ro!KL„..:....... ,,YtiC`.,•.... '�� - y _ w, iU i i 1 i t 3 _ _. _ EX. LOT d I 11v L�r lr�f�'`I 1 YY f % y II o� 0 O p'_'f _.y' "___� '_.- :_' -5�` f } _ ...r I`',3 f U. i)� 3n��yj_; ! _'1 , -'1 30 T .,�•k;,p,.d s d�rl I,Nou 118s0 ` S07.0� z„ __.. - I s LIGHT 0& 0( mat � , R Q 'A' II � � a 4 � �j (' t "' "/,Y It y _O�pC • !4�,i .�O�0 n 0 a /P'_ ___'-t_�__�_-'••t, ;.. ,}L �� 1� _jN ,II1 _ -t.- II II d�i�!Oct -m y � N Ll `,4d, - ° OYJ' p II d .v i ,.;�>. 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I (i S A i h r \\\ -',r'� » 1 Ilii j I j •: I /, EX 12 SD TO REMOVED \ \ I `��. r v II , Y� 1 1 \ Q �.). .f » PROVIDE FILTER BAG PROTECTION 1 II � , I / \ r , r I } �„ 5''�,, UNDER EXISTING GRATE } r ; I =2J9.0 ,, \, \ I I Q, _ w i II t ; IE=299.$6,} 12 N) , . , 11" y -k-- / \. ., \i `30•: 2y I III` i r Z J O a 3 Z UO - W >_ 0 LL O O O cz P -J Q Z W W Q ........... -- - -- sIr . -- _ Z IIiI' r - _ IbI°__- °I I' - - I _ -: a ! /, . I---EJL-CB_ TO BE_REMOYED �-------------- • ,�r� ` N 28.58'39' E 79.46' "9y ; I 24 PAVEMENT If oal <I�jp 1 't i j /i� u' RIM=300.83 -� sue......... O 000 c\r PRIVATE DRIVE c ri ;- ; r r r :_ -C ( ��O� 0 �'-StNAtf-'.... 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INSIDE------ --- - - - ---- - -- - ----- --- =.3 ';' ----xi I i` Q Z \ 11' t 1 I l' r • / `-r 1 •.t °'% 4O o -•, T-^1}�� .per- - 4' j.\ 3{ }�-1�-.'� °e ° .. �.. ryT ' f V' J .5 Q I _4 ' V Vj �:l '�V K y�y � � t � W PROPERTY p 7 G. I, . :� �Vj t ° e v.,y s° 1,'I I}'._..X.- t)� .�f,.' v^ i y PROPErI l 1 LINE °. `9U ' .. •9' ° 9y 3yt - h Si• - qq�� 'i `'.1, t I ,` 1 ✓ �. ( �1 ; „ J u .\s�. `Y ° ° :� �.,1 G , t,> \ 1� I ,\ °� � � �° r I I c :, II III r! i r 3 T . TX ., -CB `° W II r:i i s i 1 �3.. /i `k` o, .�Q �� °'j BE 9ABANDONED AT -THEE. ° �0�1.5. ° o " �EX v A. r= _-�} � I � `111. 1 ti I I, a ry ,p� { > ~- �<, 3� i• 'q °; .a ° ° SEflVICE MAIN A1vD'THE . ° ° VAULT I�'-`"i 1 I' 1 III S� Q EDC�E ° of 1 II i + II'' EX. WATER\ ail �� Z Q w HYDRANT SHALL. BE SALVAGED ° i i ) ; i_-x i I 1 ( _ I VALVE � u � t � `oEX G�ONCR�E•. ! I:� �:'� I � I i"y ,I � � �;; j T E. DIRTf CT. - €OO7iNGS- e ° ° e.`FMtlSF1-FLOQR ° !'•. rI S i�: tt ; ,1 ' 011io k`�� O I J EX. SDMH ; • 14; .j [`'�} 12� // �)11/ f i `�� ° ° - . a CONCRETE StA6 �Oy I ; -L , 1 r�s �' J I I I''b % : t •':• // �••i; ___,T °' 7 • I > ° v. o p o ° ,° - �9� •°�Y 16 VQ<f 'L.......-•.±t • i II 1, `I 11 (' '?�' R O RIM=300.14 14; I. ' r; €".'i25 ,t // FINISH =FLOOR° ---- 3 4 s� oX. II. t I i I 1 -� 1� 5 N -1 I. IIII I ,: I. •eel ,f /� ) r r° .Oi�GRETE-S B.- ° °° . • ..e.r,*;- ° _- t,.t I I - „- 1 ' W IE=293.32 12 NW) �I ; ° ' ; r. ' ;� . °. a ;t: 1 t i 1 g ('7 IE=294.89 12 NE) ul Icl ,!piF I I (( /i. ?r, b° °3 4$. ° METERS 1, 1 r� y_. m 11 .� , 1 . 02. ER IE=294.75 12" S) (12" PIPE W/ 8" INLE)e INI -> e . ;.,q °. ° °° . W'> e3 i-{I ». �ti 1 I p�..h. _ ) I '' I / 1 4 L ---__ �- - d - ° ° - °. '°. .4 1 , IE=298.96 12" VERT. in I c j; Jr ;.fj >---------- -= ° o0 3Q;--� i 1„ �% : i' // yam_ ) ° �y-� 1 r 1 �'>-,-,,, ° ! 8. .'°, ° ° o' EX r ; ( fj /� EX 12' SD TO BE "4-"'^P Lw �� ttc�� °. 7D°BE REMOVED EX. WATER q11 I V v °� ° . II° w rr; .� ° ° 1; •s� b<xo ,As VALVE EX CB TO BE REMOVED I I I g[' .. ; !� /i o ` ' CODE RI�CTURE ° ° ) I.. l' _ _.. - ; 1 ,► t ,1 , t "t :I t EX. FIRE PROTECTION RIM=299.88 j Ia"°; I /i R��g..J ' g ° I =K ; _== t _ s SERVICE VALVE n r III - , �' :' I 1 r ..... .4 - --.a ............ - v ° ° __1 i r IE=295.51 12 SW r.` ; ° -- ( ) �I.� !� // _ _I I - I 1 o g `-YM1. 1' r� �1° ��-....�:--°s-<sf-�_ 3 _-a ; h i� , j` C 1 / RIP -RAP SL' PE 1N#-^__ _ ° G� Q, ,', } i 1------= = =_ == 1101.45 - �._ :. ' .... _._.. q...:.. x: - �Q_ :'::?.7 ------ -- = .- 1 {, „i ! - -r ;, �u , , 3Q _ EX. HYDRANT •j SWl�tE PR TECTI ON (, -- a ! ---= ' o, - _ ---------- ---- 1 -- I. --- _ ° �'. --"" 1 _ �1 _ � fr^ {, ._._ �,J ',��' � L -- 1 -~� �-------�--�''<-� ` `t., �c'- --'k-_-t--�1---Z".._j- -t' iy-._Y � ! 1 �l i 3 „ 3 1 1 1 ..> • . 1 - _.�.._ w Ul _-i.A"-._-,•,•••.... I 3Q i �.`.�„2,,..._.._.:a- -t l 1 1 .. > 1 !, t , }'. __ 1297,0 I I j yam. 9 I 1`'ia, I, ., li =:'.. �j _ _--- _ -_ _-_-__- 1 ...___._..srrl ✓' l 1 1 - -it ^"' Q\i 1! "',j } i 1 I `� _, .. - "I.'-.'_I..-..-,r..._. `yg i..., r•_..._ /CF I, ' ••..... , f i-_'Z._.I,,..__j-'.-r.-t-'.r._... +� -.._ - , EX. -CB • ......( ' !�' --'r.__!tn 1 I i t I I (. F �'T•.._i...._.i...-.r_ '�' .. 3U,S'� J:1y ",.r �,'! PROVIDE FILTER BAG PROTECTION 81 _.__.__.._ - I ,• ; 1 -. � RIM 301 23 UNDER EXISTING GRATE I d'I �' ? ;, -. ..__ . .. .. Fes....- ._.� ::::::........1 1'j - :.-� + r'a I Q� fr li , .. ' 3 ,, O I ••S; t f., N 30 ' `� :3"02. �.. o�, E=296.92 �15 N� EX. RAILROAD TIE G' b' 4Sx45' TEMPORARY EROSION/ SEDIMENTATION POND -'...... ......:. I `° I i' RETAINING WALL = '' j( 99 / _ 30 I �... 1 : 1 J^' i 1 - �yIE OEL�99 0 5 O s i,� 1 EX. CB ., BOTT r „ ', , ., � `• r � `•: TOP � Q. �_ � l �� ..�,.,\. • 6 rr N `'� ! _ l:$ ;r: I f' RIM=301.02 MAX W.S. EL.-298.0 _ o. , 1 , i 5^' s c IE=296.19 15" SW ip ; 'ca s_i : VOLUME=4771.5 CIF _$R'7ow �{ee., `')prnc� CY s'1 `n,' �n ��s EX. TELEPHONE 3's, '' `' EX. TELEPHONE ---' � �y �m�"� � �.,` ) MANHOLE I. ' 9 \� s;t \SURFACE AREA=2,018 SF 4-ru_s -� r�. I L4,"„¢w) Pe r m Sri Son Q II , ti. r dri H� IE=296.12 �15::N V-0.c P I ;i`4'r bil � I 3' n .� cal ' MANHOLE �. - zUC`�` .•\;•a L S 5 TEMPORARY INTERCEPTOR 3WALE '' IE=296.21 12 S� � s.. � "'''W- •c� 25 ,j i , 2 4' S '1 �1 � (� ho rnur\e }qh •--3��=_ � •'' ;., � .•' ", t'( 'i <� '° °P. � •A +i 3:1 '' '+ CIS - ��/ ( A fv c+/'S W/ ROCK CHECK DAMS i ._.� EX TREES TO REMAIN ? l/� (•�. J V ji" (y� -�x1- 1 CV• ; t , _ SWALE rr ER DETAIL SHEET Q EX. STREET LI( I-!� 'I IE=297.0 / _. -- : I°I QF o ON 4" SQUARE: �r ---- P6t�, a v FLAG - _ _.. . WOOD POST,, > _ u.... _--_- POLE ntuyen„J,M,4 .. r� 1 7: y • 1j _�� x - % �t .ram .0 : ZW ................... h _ .... • VµAi g..T, ?\ , N -___ - _ _ _....................................s�.......... .. , y - Q- N- =-2 tl L . 4 EX. CONCRETE=900Q!00" �J ._�'__-----_ 36 �`. _ .� -__------------ i i ?;11,e'°,J - - .. r,\ 2oa.sr \ \ ........... RETAINING .1 ° °° . - -- �.. o:: w aQ is a� - -" - WALL - ; --- oe.3r `:.9a� - i �s -- -, I R=35.00 ====s°=,' - A o ig �r �6.qg .3. - -- X. CONCRETE ff -- 4LI VERROWSP�.LWAY `� ;a•ss Q36.08 R= 50.00 !�'= 440 �h2s eaa MONUMENT NEW SEDIMENTATION POND BAFR_E -- -- --- S� _ _ -- _ --- y ' ! �T ` ._•._° lea- _ (PER K+•C.S. W.D.M. FIGURE 5.4.4E) EL.- : ° ° - -- --- - ---------- --'s _ -- - - 9 --_ - .;g SIGN 4 -- --- -_ - f -- ` �-------- --- __ - - - -- -- : , . MAY 7 200 ��, e �� 1 B 2 1 ----- _ __ ____ _ ----- EX. CONCRETE EX TREES TO REMAIN `t 5 SIDEWALK '-` MONUMENT o `\' SILT FENCE 1 FOOT M�MJM SIGN --------------------- -- EX. 24' PAVEMENT INSIDE----"----- 2' PLANTER NOTE EX TREES TO REMAIN ------------ - -"" - - -- "' ==== __�_.�_ ._; A`- INSTALL TEMP. N.G.P.E. FENCE -- _� 5 N 36.20.00• E - -- ---- --- - 1 - - � ..}�'.- LT R . - - - -- ----- - -------- WAAT DRIP LIN�_QE_ TR€-€S--TO---- - --- - ------ - - -_ _ 4,* n Ta --- - _ __ = _-= - __. BE PROTECTED. - --- -- - -Q1I QNT r51 --- C`7 O 00 LL 0 N U U) CO N ry u Q Z Q a U m Y O C C 3 a Y m > 2 in m O O U Q G = in C7 U Z 1 O zw g 'n a J Z x u_ �~ Z W w N `` 5 Z Q n N O N N oO Z of Q rn(Dco �z CIA a I 3 I z �, _& ir) to � CD Z w In uJ 1' U v=) oN�S J 2 a -- W S N5 4 C� ______ ---- _______ _______ _ -.-_---- r y D OOO ________ _______ _ __________________ --- ----__. - - -- --w_ ----_______ 81 /1 0 ^� V \ v F 9F 3 SiE �� 4 E O Z m I ._,,. ________________ EX. 24' PAVEMENT yy _ --------------------- J \ /NNAL E�� o r V) ui - s - - - - - EXPIRES 6-23-04 r:\I IVVVb\I IaVI\e»ylrleen Fly \ I I ov I -u.uwy vute,urric: vo/vo,wv4 lo:w JCUM. =cv UWVIIUSIVrI hre15: nlJvl-s,n T.E.S.C. NOTES AND DETAILS EROSION/SEDIMENTATION CONTROL NOTES 1. APPROVAL OF THIS EROSION/SEDIMENTATION CONTROL (ESC) PLAN DOES NOT CONSTITUTE AN APPROVAL OF PERMANENT ROAD OR DRAINAGE DESIGN (E.G. SIZE AND LOCATION OF ROADS, PIPS, RESTRICTORS, CHANNELS, RETENTION FACILITIES, UTILITIES, ETC.). 2. THE IMPLEMENTATION OF THESE ESC PLANS AND THE CONSTRUCTION, MAINTENANCE, REPLACEMENT, AND UPGRADING OF THESE ESC FACILITIES IS THE RESPONSIBILITY OF THE APPLICANT/CONTRACTOR UNTIL ALL CONSTRUCTION IS APPROVED. 3. THE BOUNDARIES OF THE CLEARING LIMITS SHOWN ON THIS PLAN SHALL BE CLEARLY FLAGGED IN THE FIELD PRIOR TO CONSTRUCTION. DURING THE CONSTRUCTION PERIOD, NO DISTURBANCE BEYOND THE FLAGGED CLEARING LIMITS SHALL BE PERMITTED. THE FLAGGING SHALL BE MAINTAINED BY THE APPLICANT/CONTRACTOR FOR THE DURATION OF 2"x4" WOOD POST CONSTRUCTION. ALT: STEEL FENCE POARIAL 4. THE ESC FACILITIES SHOWN ON THIS PLAN MUST BE CONSTRUCTED IN CONJUNCTION WITH FILTER FABRIC MATE ALL CLEARING AND GRADING ACTIVITIES, AND IN SUCH A MANNER AS TO ENSURE THAT SEDIMENT LADEN WATER DOES NOT ENTER THE DRAINAGE SYSTEM OR VIOLATE APPLICABLE o WATER STANDARDS. 2"x2"xl4 GA. WIREN FABRIC OR EQUIV. 5. THE ESC FACILITIES SHOWN ON THIS PLAN ARE THE MINIMUM REQUIREMENTS FOR ANTICIPATED SITE CONDITIONS. DURING THE CONSTRUCTION PERIOD, THESE ESC FACILITIES PROVIDE - 1.5"SHALL BE UPGRADED (E.G. ADDITIONAL SUMPS, RELOCATION OF DITCHES, AND SILT FENCES, .75" WASHED GRAVEL BACKFIETC.) AS NEEDED FOR UNEXPECTED STORM EVENTS. IN TRENCH AND ON BOT- N 5. THE ESC FACILITIES SHALL BE INSPECTED DAILY BY THE APPLICANT CONTRACTOR AND _ SIDES OF FILTER FENCE FABRIC ON THE SURFACE MAINTAINED AS NECESSARY TO ENSURE THEIR CONTINUED FUNCTIONING. 8" MIN. 7. ANY AREA STRIPPED OF VEGETATION, INCLUDING ROADWAY EMBANKMENTS, WHERE NO FURTHER WORK IS ANTICIPATED FOR A PERIOD OF 15 DAYS, SHALL BE IMMEDIATELY STABILIZED WITH THE APPROVED ESC METHODS (E.G. SEEDING, MULCHING, NETTING, EROSION BLANKETS, ETC.). FILTER FABRIC MATERIAL 36" WIDE ROLLS. USE STAPLES OR WIRE RINGS TO ATTATCH NOTE: B. ANY AREA NEEDING ESC MEASURE, NOT REQUIRING IMMEDIATE ATTENTION, SHALL BE FABRIC TO WIRE. ADDRESSED WITHIN FIFTEEN (15) DAYS. FENCE SHALL BE LOCATED 2"x2"xi4 GA. WIRE 1 FOOT MINIMUM INSIDE 9. THE ESC FACILITIES ON INACTIVE SITS SHALL BE INSPECTED AND MAINTAINED A MINIMUM FABRIC OR EQUIV. PROPERTY OF ONCE A MONTH OR WITHIN THE 48 HOURS FOLLOWING A STORM EVENT. 10. AT NO TIME SHALL MORE THAN ONE FOOT OF SEDIMENT BE ALLOWED TO ACCUMULATE WITHIN A CATCH BASIN. ALL CATCH BASINS AND CONVEYANCE LINES SHALL BE CLEANED PRIOR TO PAVING. THE CLEANING OPERATION SHALL NOT FLUSH SEDIMENT LADEN WATER INTO THE DOWNSTREAM SYSTEM. 11 AT THE S MD WASH PADS SDURATONHALL BE IOF ILIZED CONSTRUCTION EMAINTAINED DPROJECT. 0 BEGINNING OF CONSTRUCTION AND FOR THE THE N ADDITIONAL MEASURES MAY BE REQUIRED TO ENSURE THAT ALL PAVED AREAS ARE KEPT CLEAN FOR THE DURATION OF THE PROJECT. 712. DURING THE TIME PERIOD OF NOVEMBER 1 THROUGH MARCH 31, ALL PROJECT DISTURBED AREAS GREATER THAN 5,000 SQUARE FEET THAT ARE LEFT UNWORKED FOR MORE THAN 12 = _ _ - - - - - - - - - - HOURS SHALL BE COVERED BY ONE OF THE FOLLOWING COVER MEASURES: MULCH, - - - --- -"'-"F FILTER n BURY TIN Ox12" SODDING OR PLASTIC COVERING. 8"OM I I MATERIAL TRENCH 13. ANY PERMANENT RETENTION/DETENTION FACILITY USED AS A TEMPORARY SETTLING BASIN SHALL BE MODIFIED WITH THE NECESSARY EROSION CONTROL MEASURES AND SHALL I I I I O PROVIDE ADEQUATE STORAGE CAPACITY. IF THE PERMANENT FACILITY IS TO FUNCTION 6' MAX N ULTIMATELY AS AN INFILTRATION OR DISPERSION SYSTEM, THE FACILITY SHALL NOT BE I USED AS A TEMPORARY SETTLING BASIN. NO UNDERGROUND DETENTION TANKS OR VAULTS SHALL BE USED AS A TEMPORARY SETTLING BASIN. 14, WHERE SEEDING FOR TEMPORARY EROSION CONTROL IS REQUIRED, FAST GERMINATING GRASSES SHALL BE APPLIED AT AN APPROPRIATE RATE (E.G. ANNUAL OR PERENNIAL RYE APPLIED AT APPROXIMATELY 80 POUNDS PER ACRE). 15. WHERE STRAW MULCH FOR TEMPORARY EROSION CONTROL IS REQUIRED, IT SHALL BE APPLIED AT A MINIMUM THICKNESS OF TWO INCHES. 16. DUE TO POTENTIAL EROSION HAZARD, CLEARING SHALL BE LIMITED ONLY TO THE MONTHS OF APRIL THROUGH OCTOBER, AND ONLY TO THOSE AREAS REQUIRED FOR CONSTRUCTION OF ROADWAYS AND UTILITIES, DURING THE MONTHS OF APRIL THROUGH OCTOBER. (PLAT flL�RDARDD STRENGTH APPROVAL CONDITION NUMBER 7B). AW GRATE 17. PROTECT EXPOSED SOILS FROM WEATHERING BY WIND OR RAIN BY COVERING PILES OF SOIL -NOTE: ONLY TO BE USED WHERE PONDING Or WATER ABOVE TUC WITH TARP. (PLAT APPROVAL CONDITION NUMBER 7B). CATCH BASIN WILL NOT CAUSE MANAGEMENT PRACTICES PROVIDING SIGNIFICANT TREE PROTECTION SHALL BE TRA18. OVERFLOWPILLL NOT RESULT IM$ AND N PROVIDED PER SECTION 22-1568 (c) (6)(a-9) OF F.W.C.C. I CATCH BASIN I EROSION Of SLOPES. SILT FENCE NOTES A. THE FILTER FABRIC SHALL BE PURCHASED IN A CONTINUOUS ROLL CUT TO THE LENGTH OF THE BARRIER TO AVOID USE OF JOINTS. WHEN JOINTS ARE NECESSARY, FILTER CLOTH CATCH BASH GIIATE SHALL BE SPLICED TOGETHER ONLY AT A SUPPORT POST, WITH A MINIMUM 6-INCH OVERLAP, AND BOTH ENDS SECURELY FASTENED TO THE POST. NOTa THIS GETAA IS ONLY SCHEMATIC. ANY INSERT rs OKINLOW AUOM THAT HAS A YIN. B. THE FILTER FABRIC FENCE SHALL BE INSTALLED TO FOLLOW THE CONTOURS (WHERE i0tN1 065 a r. or STORAGE. THE MUMS aA� TO OEWATED THE STORED FEASIBLE). THE FENCE POSTS SHALL BE SPACED A MAXIMUM OF 6 FEET APART AND DRIVEN FETE•R ME pA SEGMENT. AN OVERFLOW. AND FOR OLWATNING CAN BE EMY YARRARIED. SECURELY INTO THE GROUND (MINIMUM OF 30 INCHES). C. A TRENCH SHALL BE EXCAVATED, ROUGHLY 8 INCHES WIDE AND 12 INCHES DEEP, UPSLOPE Poe BOTTOM AND ADJACENT TO THE WOOD POST TO ALLOW THE FILTER FABRIC TO BE BURIED. D. WHEN STANDARD STRENGTH FILTER FABRIC IS USED, A WIRE MESH SUPPORT FENCE SHALL TESC TRAP BOTTOM EL=294.5 PROPOSED GRADE MAX W.S. EL=297.0 0 SECTION MIN. TOP EL=298.0 GRAVEL CONE STRUCTURE EXISTING GRADE OVERFLOW EE STR 0 E SECTION IE=294.5 _ `I1 ,y1 30' �It,TEMP. EROSION CONTROL TRAP SECTION C5 NOT TO SCALE TESC TRAP EX. GRADE BOTTOM EL=294.5 0 SECTION MAX WS EL=297.0 MIN TOP EL=298.0 PROPOSED GRADE ® SECTION 15' ^TEMP. EROSION CONTROL TRAP SECTION C� NOT TO SCALE BE FASTENED SECURELY TO THE UPSLOPE SIDE OF THE POSTS USING HEAVY-DUTY WIRE ce Standards STAPLES AT LEAST 1 INCH LONG, TIE WIRES OR HOG RINGS. THE WIRE SHALL EXTEND INTO THE TRENCH A MINIMUM OF 4 INCHES AND SHALL NOT EXTEND MORE THAN 36 INCHES 1. Any accumulated "Onent on or around the filter fabric protection shell be removed ABOVE THE ORIGINAL GROUND SURFACE. Immediately. SedlimerTt shag not be removed with water, and all sediment must be disposed of as fill III or hauled off -site. E. THE STANDARD STRENGTH FILTER FABRIC SHALL BE STAPLED OR WIRED TO THE FENCE, AND 20 INCHES OF THE FABRIC SHALL BE EXTENDED INTO THE TRENCH. THE FABRIC SHALL NOT 2. Any sediment in the catch basin insert shall be removed when the sediment has filled one - EXTEND MORE THAN 36 INCHES ABOVE THE ORIGINAL GROUND SURFACE. FILTER FABRIC third of the available stonve. The filter media for the insert shall be cleaned or replaced at SHALL NOT BE STAPLED TO EXISTING TREES. least monthly. F. WHEN EXTRA -STRENGTH FILTER FABRIC AND A CLOSER POST SPACING ARE USED, THE WIRE 3. Regular maintenance Is axitical for both forms of catch basin protection. tlnNka many forms MESH SUPPORT FENCE MAY BE ELIMINATED. IN SUCH A CASE, THE FILTER FABRIC IS of protection that fall gradually, catch basin protection will fall sudde* and completely if STAPLED OR WIRED DIRECTLY TO THE POSTS WITH ALL OTHER PROVISIONS OF STANDARD not mikmained properly. NOTE E. APPLYING. G. THE TRENCH SHALL BE BACKFILLED WITH 3/4 INCH MINIMUM DIAMETER WASHED GRAVEL H. FILTER FABRIC FENCES SHALL BE REMOVED WHEN THEY HAVE SERVED THEIR USEFUL PURPOSE, BUT NOT BEFORE THE UPSLOPE AREA HAS BEEN PERMANENTLY STABILIZED. I. FILTER FABRIC FENCES SHALL BE INSPECTED IMMEDIATELY AFTER EACH RAINFALL AND AT FILTER FABRIC PROTECTION LEAST DAILY DURING PROLONGED RAINFALL. ANY REQUIRED REPAIRS SHALL BE MADE IMMEDIATELY. NOT TO SCALE CONSTRUCTION SEQUENCE / 1. BEFORE ANY CONSTRUCTION OR DEVELOPMENT ACTIVITY, A PRECONSTRUCTION MEETING MUST BE HELD CONSTRUCTION REPRESENTATIVE SENTATIVE CONTRACTOREEN THE CITY OF HALL NH TIFYCITY APPLICANT FqFEDERAL APPLICANT'S Id)" Fp PUBLIC WORKS DEPARTMENT (253) 661-4131 TO SCHEDULE MEETING. 2. FLAG CLEARING LIMITS. Cvv / 3. INSTALL STABILIZED CONSTRUCTION ENTRANCE. / 4. INSTALL FILTER FABRIC FENCE AS INDICATED ON PLAN. 0 5. INSTALL OFF -SITE CATCH BASIN PROTECTION. NOTES: / of e o / 6. CONSTRUCT SEDIMENT TRAP. 1. CONTRACTORS RESPONSIBILITY FOR MAINTAINING CLEANING / �pGF 0 o a0 a 0 Q�00 7. CLEAR AND GRUB AREAS OF THE SITE TO BE ROUGH GRADED OR FILLED. THE APPROACH ON A REGULAR N OHO 8. INSTALL INTERCEPTOR SWALES/BERMS AND CHECK DAMS. S. 2. IFDIRECTEDRECTED BY THE CITY OF FEDERAL WAY O 0 0n O �' 0 000 000000p0 ADDITIONAL QUARRY SPALLS 0 9. ROUGH GRADE SITE AND INSTALL STORM CONVEYANCE SYSTEM AND MUST BE ADDED. R= 25' MIN. RETENTION/DETENTION FACILITIES. PROVIDE INLET PROTECTION WHERE INDICATED. 3. THE CONSTRUCTION APPROACH MUST BE LOCATED AT THE , 10. FINISH GRADE SITE AND CONSTRUCT ASPHALT PARKING AREAS, ACCESS DRIVES, PERMANENT APPROACH LOCATION. 4"-8" QUARRY SPALLS SIDEWALKS, CURBS AND GUTTERS. �y�� MIN. 1 FOOT THICK 11. COMPLETE SITE STABILIZATION IN ACCORDANCE WITH LANDSCAPE PLANS. 12. CLEAN STORM DRAINAGE OF ALL SEDIMENT AND DEBRIS. TEMPORARY CONSTRUCTION ENTRANCE 13. REMOVE TEMPORARY EROSION CONTROL FACILITIES WHEN SITE IS COMPLETELY STABILIZED. NOT TO SCALE TENSAR GS-1 SAFETY FENCE OR EQUAL (BRIGHT ORANGE PLASTIC MESH) 10' � 14 GA. GALVANIZED WIRE Tim-rsUA. GAIVANILLU WIRE -STEEL FENCE POST 6' HIGH MIN. NOTE: 1: CLIP FENCE TO GALVANIZED WIRE @ 5 FOOT ON -CENTER SPACING 2. WIRE FENCE TO STEEL FENCE POST TEMPORARY N.G.P.E. FENCE DETAIL NOT TO SCALE a 1.0' MIN. FLOW 3' 1 3' SWALE ROCK CHECK FLOWLIN� ` DAM '0.5' MIN. KEY ROCK INTO SWALE 0.25' (MIN.) SWALE X-SECTION AT ROCK CHECK DAM KEY ROCK INTO SWALE MIN. 0.25' 0 i LO 6 ROCK DAM X-SECTION ROCK CHECK DAM DETAILS NOT TO SCALE FILTER FABRIC CATCH BASIN WITH GRATE U NOTE: p 1) DO NOT PLACE FABRIC UNDER GRATE 2) APPLIES W/ SUBGRADE WORK. ONCE CRUSHED ROCK PLACEMENT PROCEDES FOR FINAL PAVING, WRAP GRATE W/ FABRIC MAKING WATER- TIGHT UNTIL FINAL ADJUSTMENT IS COMPLETE 3' APART MAX. SUMP BEHIND ROCK CHECK DAM SHALL BE INSPECTED DAILY, AND CLEANED WHEN COLLECTED DEBRIS EXCEEDS 1/2 OF ITS DEPTH NOTE: ROCK SHALL BE 4" MINUS QUARRY ROCK. 3/4" OR LESS WA: ROCK FILTER OVER FILTER FABRIC SUMP BURIED FILTER FABRIC s CATCH BASIN-/ W/ GRATE TYPICAL (4 SIDES) SECTION A -A C.B. SILT FENCE DETAIL NOT TO SCALE WA S OPE CHECK A SPACING Q_M,_� 07 - 5% 150 > 10% 50' 1I -1ti VITA pkinl EL.=298.5 q % SUMP. SEDIMENT O nO0� OOo O'o�f N 0�00(` 03 In ISOMETRIC Ld a PLAN VIEW - c 0 j 0 0) .J a a Z II..LLQJJ 0 W L� Z >-0)�t� Cc 0 J Q CE Q Z Q J In Or 1_ 0 Y CD a U 0 2"x2"x4"(MIN.) WOODEN cc� STAKES, DRIVEN INTO GROUND 18" (MIN.) IN o m DEPTH. o A �-- SLOPE= 2:1 z° MIN. 6" DEEP x 12" WIDE 48" MIN. CMP STANDPIPE OPEN TOP, CLOSED BOTTOM ENCASED IN CONCRETE r/ o 0 0 0 10 YR WATER 0.5' SURFACE W.S. ELEV.=298.0 • o 1 1/2" WASHED ROCK WATER TIGHT SEAL o �w GRAVEL CONE o As Zo ?� 12"CMP DEADIN. o o In = STORAGE IE=295.0 8"x8"x8" PVC TEE W/ 2'MIN -- RUBBER GASKET JOINTS 1" DIA. TYP., 40 HOLES MIN. ®10" O.C. PERFORATIONS SHALL BE LOCATED WITHIN 8" RUBBER GASKET PLUG THE LIMITS OF THE GRAVEL CONE W/ ORIFICE DIA =3 1/2° e m 18" THICK CONC. BASE _i m_;r_m_m'n_7�rfr m_ 2' COMPACTED GRAVEL BASE NOTES POND BOTTOM- 1. i. PROVIDE A RIPRAP LINED SPILLWAY, 6" MIN. ABOVE STANDPIPE OPEN TOP. 2. A MULTIPLE PHASE POND SEPARATED BY PERVIOUS GRAVEL WINDOW MAY BE REQUIRED TO CONTROL AND TRAP SEDIMENT, AND TO REDUCE DISCHARGE ENERGY. 3. POND CHARACTERISTICS SUCH AS DESIGN VOLUME, INFLOW, OUTFLOW, MAX HEAD SHALL BE SHOWN ON PLANS. 4. THE OUTLET PIPE SHALL BE A MIN. OF 8" IN DIAMETER AND OVERSIZED ONLY WHEN APPROVED. 5. INDICATE SEASONAL HIGH GROUND WATER ELEVATION. TEMPORARY GRAVEL CONE STRUCTURE NOT TO SCALE �►i..�aa�I�il l i✓� MAY 2 7 2004 O 'Ct 0 C0 0 D Z Z C D CO z a U D .0 D co O J N co W m 5 z 0 O = V = u C N u N 0 a m a c L 0 m lo Ln Ld U I=- z z o N gN o W x L- oZ L Q N � Z C W N ONO Obi L0 00 W z N I .- I ww z �i Ln L0 CD Z .N. w - U v=i a POFF�sONq 81EEN�\�� z M y 0 EXPIRES 6-23-04 aI1 ic. r.\i IVVVJ\I JJVI\OIIy111MOl ll ly \ i l Jv i-cv l.uwy aside/111110. w/u/cVvv w.V4 llu1.. 1-c. VWVIIUSWII AFC)J. LI Iiv I-u,Pul-1, N U SANITARY SEWER AND WATERMAIN EXTENSION PLAN I I 1p ill ' cX. 23, TYP� 2 (' RiM=31213 w I fi i :E=305.= 12 W- r" tr..=305.98 72 �� VARIABLE WIDTH PRIVATE DRAINAGE r` ' • `3 \ RIM=308.5F; �r 1, . AND UTILITIES EASEMENT PER PLAT ,._--- ! , k -r"-� j ltil 'r TE l..E:PHO`FJE ALTERATION REC. NO. 8910030400 ---'"" IX. S ? ` / IE=a,�4.;' (I fi' it i#M1'wr i j....BOX IE`304.3$ 15 E ALSO VEHICULAR AND PEDESTRIAN �_ RIM=308.73 " i DRIVEWAY PER REC. N0. 891003114 IE 299.2_L- C pp EX. HYDRANT h Il' ' - ,C ..+. 13 -„- _ "_ " .`- ._._._..._ _...._._.. „ $;__ 5. -.. TO REMAIN r. --__<_ -"„_. -_-- "- -< =; R __. _--__.-_:-_" _F =_ - _- ,1`i-� , � VALVE � _ -_.__ - - ..,� _ -X UOT it -. FACK OF S,iDEWA.. K . i % 1, . - ' r l_ HT 10' PACIFIC NW BELL 1 fi'; , EASE MEM PER REC. f :::� 1 _ 14 7 NO. 9002271130 G iIp'; FH EX. WATER LIVE 1 ` -_ _- r IX. HYDRANT IN 4' X 4' EX. --B, TYPE 1 CONIC PAD � j' ` TO REMAIN �ti ? � �I, (TYP OF 4) a ;I• '` ? EX. WATER Rli=?99.2G � tl i 1 tu, VALVE iE=294.85 i12., �{\ ,.,\ r) li �g �• alb 295.00 (� I f 1 i r q i zzz 1E=z h 294.bd i 15 E ) s il' 1 / \.. 6' STORM EASEMENT BSBL \ if @ - w - - - - w - - /j- - w - - w - - - -lw - - - - w - - _� PER PLAT ALTERATION i ), REC. NO. 8910030400 EX. (B, TYPE 1 r Ih I ,{�� 1 ty RiM=299.05 IX. 10;/'I�ATERMAIN EASEMENT O j %t I ?nYE EX. SSMH \ I O iE=295.81 (12" N}� I I I PERL1C. 0. 9006220952 Q ??f % RIM=304.99 E=296,53 S3 EX. SSMHI =2 80 �88: 6" NE) RIM=298.50 ti RI 3 IE=2" 00 8 W it 4r / - I 1 Rlb.-: IE=286.82 " N i( 3' I I / }` 'E='999.86 '1"' W) IE=286.70 �88" E 'i" /,' 10' M ?1 �� 1 E-291.84 15" E - - iii �; I I P REC. NO. 007 093 ? 1? ,1 IE=299,96 M Nj i- - / E S R LIB t I`4} t 10 WATER EASEMENT _ �; T - __........_ .... -_ .- _- _.. ro t ; ..1 P€� REC. 0. 9006220952 ;_ _ __ . tl I It" I /r = ' ',_ --_ _ 4{ .. 10' 0 E ENT PER --i �- = - t 't %'PLAT & ALTERATION REC. 5' SIDEWALK i +ix I z I - = aC7 i ?? �� NOs. 8011:1�0656 & RIM 3 4. ... .... IE 294 Ot -�J _ _ L� i1I.. ,t N .9 AA3ff400 l _- " 1 \� u� ,r r c ., i2 'di .._. _. _._._ ..._.._.... __ _ J W--- E IG� TIO 1 ii )' f t% = =' - r - 1il `- E' LOT j irl ! (Ef 3 ._ ___ _ - RVICE1 _ S p i AND I r7J M1; �I' 'I f it SSM LIGHT NEW 6" SANITARY ?' , RIM=30 .83 PROPOSED BLDV1. SEWER SERVICE _ 23' DRIVEWAY EASEMENT 11 . ,''=287;.34 8" S " ' 1 t $ PER REC. NO. 8910031150 If WATER SERVICE T UTILITY EASEMENT ii 1'' N, % l l E=2$7.44 �8 TO BE ABANDONED F.F.-302.5 REMOVE PORTION INSTALL + r# ____ OF EX .. B _� AND METER i i'g PER PLAT & ALTERATIO t) 1' AT THE..SERVICE_MAIN AND 3 ��l ----. __ _-_ - THE HYDRANT SHALL BE ___T __.\ f, t ? ??� 1-B x8 TAPPING SLEEVE REC. NOs. 8011120656 if Try, ! I !) ' `- L & 8910030400 ii if' % ��// CONC. BLOCKING 1� j , SALVAGED TO TA DIST. j --.__ _ _.., ,. - t? t 48 LF 8 D.I. CL 52 II Ib' j + , J DETECTOR CHECK ' i 1 EX. SDfAH „ fail, f :/ FIELD VERIFY LOCATION E ASSEMBLY PER 1 1 1 I '° EASEMENT R1M=3d0.1 I t, (r ,j ; // SIZE AND lE OF E)F- SAN __. DI PLAN No. B-19C E 1 PERREC.N0. 9006220952 i iE=293.32 {12t.# ,; �r■ t ? 11 SEWER STUB PRIOR TO , t 1 �1i iE=29A.89 (12" } ` jj W' H i' J - i /' i; INSTALLATION OF SIDE IN VAULT (5' LONG x 4 1/2' !E=294 75 ' 1 2 PIPE 1• 1 8' INLET} r a (i : I I, I WIDE x 5 1 2' DEEP AND iE'=2or8.96 (1L V'LR'Q ik 1 it it i i f SEWER. NOTIFY ENGINEER ) ? a ,I , / IMMEDIATELY IF ANY {. 4" PVC SUMP DRAIN ' j ) ' '! DISCREPANCIES EXIST. ? ' l ' k EX. WATER 1 J ) r I IE=294.Ot NOTE: DOUBLE CHECK I ; EX. FIRE PROTECTION 1. Ij f i i 1 VALVE o r.' I VALVE TO BE LOCATED i 1� EX. B 'I ) RIM=299.88 I i I I ' i f i ; 11 ( INSIDE BUILDING - mm --I 1; t?^a1 ? ' s SERVICE VALVE iE=295.51 (12" SW) " % jit i i i _-_ ........................_"l t 1'1 u t u EX. HYDRANT EX. CB, TYPE Ili °"EX. L GNER '.<E+ tl t? t TO REMAIN r RIIs4=29O.96I I E.-2fsb.4b (1!'> N) ,, 5 1,;1 O \t HIM=301.93 IE=286.28 (15" SE} \ It'i I i i� " O O 0 t = Yk f IE'=29690t " 'dl / -� � t i "i IE=296,92 ,15 Jj EX. RAILROAD TIE 41r =' .x i.gy ; i I, I t� O6, 0 66 � ? i \1 r It RETAINING WALL--_�..r�.........._._ F' OO.� 1` EX. SSMH r• - RIM=291.59`75'" 3V,'i IE=276.19 �'8 " W = a I /�---.. 2 G,. ` IE=276.49 " N3- .0% M n IE- .9...7 t h� _" nON PER 10 STORM EASEMENT 121 LF 4" PVC SDR 35 ® 1 IN. IE=275.99 8" SE tr r % „ 3r? _- _ _ _....._...._.�....._. EX. `B „ __ _:. = _ - <. J�� NOs 01112 656 ............. ............. ..._ 4.. - �v _ FLAG II \\ pp - NE 1 „/ EX. TEL EPHO: A ` n E MANHOLE_ ...........i,�f° � (M s � _.. �._ e ..� EX. POLE SIGN 1 Y` _ L.X. :;B. TYPE 1 i/ 3 -- �i t ? ------fix __ --- -- n r --1- e= -- t - 1 ______ -- - -- - - -- - y 1E-287.67 1''1 - ===P==_ -`' "'{'3:�- R.1150. A.1 r 3 -- ---- MOtdUMEN. a • i _ a --- IE:-287,47 ?� S1 / � ----------------o'-------- --------------- ---- a'f� <.; � .g -------�--'-- �-- --- ---_----- ----------- _ SIG ' 1 == NCRCT - - - - - -- ------ 30 DRIVEWAY EASEMENT 3iM `_'_____= ri=----- --- ------------------------------- -- - ,_ ____`- - ==- _= ________ 9 PER REC. NO. 8910031150 R■350�' --------- RETAINING - -- -_-_______ ___L__ - = 10 PACIFIC NW BELL T 4' PLANTER ` - "EX. 4' PAVEMENT -- DE - _- ------ r.X. 5'1'^,LE.i ,..IGH'I' � ,TALL n,+' - - EX. 5' SIDEWALK �------ - 7'=TITIUTY LE{1Sf�F�HOIYE EASEMENT PER REC. _ __- ON 4" SOUA.RE „= PER PLATPjhftAlIODL.--J" N0. 9002271130 WOOD POST � _ 11a -- /r EX. 76' ?Lf1NTEP, EX. 2° PLANTER REC. NOs. 8011120656 ---------- -- N �0Qp E _ I-/----------- ' & 8910030400 - - �� - ----------- 187 -W n,�.,, --- _ -- _-- -_------------ a------ AY �.594.3s" ---- ----------- - --- -- __________ 3____-__-_- _--____ EX. 24' PAVEMENT w _ _ _ ----- --I - _ w_ _ _ w w _ _ -w -w - z a J � b W Z � O 05 W Z W uw- cox00 V' Q Z W F- a Q �j m o r Qa y CD W U M� " m O Z 0 Q � o o - {zl 6 0 0 O O 0 00 mtn0 W Z Z Z Z Q W Z Q D .0 $2 W ( O J N V) W m 12 O m a UP C C 0 ,� ell U y Q Z al m I QI N V rn c O c O m O qa a � U Q O = 1- rn Li C7 U Z j o ZOf gN W X 0- Q cl Z w Q �` Zw g N Q ,`0 N O N N 00 z z af Z- � (0 0000 L z N Q I r I Zw in Ln 5�'� to 5 Z w RESUBMITTED cc W " " Y �-�4- U )n MAY 2 7 2004 3'v sQ�� JyV Q 2 t5 LU A OF WAS# rA 8 4 CON e: V:\11 UUUs\113U1\engineering\116U1-SW.awg Uate/lime: UD/UD/ZUU4 1b:Ub Scale: 1=3U Dwollaston Xrets: Z11,5U1-S,Z116U1-L,Z11JU1-D,Pot-1, Go z :i o rn d �I