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18-103437CITY OF Federal Way Centered on Opportunity NOTICE DETERMINATION OF NONSIGNIFICANCE (DNS) South 3361h/Highway 99 Tightline and Water Quality Facility File No: 18-103437-SE Description: Propose to tightline (convert from open channel to closed pipe flow) approximately 500 linear feet of an existing intermittent Type-F stream, and install a water quality stormwater treatment facility. The completed project will provide advanced stormwater treatment in accordance with the King County Surface Water Design Manual (KCSWDM). The project is considered an essential public facility and has received partial exemption approval (file #18-103439-AD) in accordance with Federal Way Revised Code (FWRC) 19.145.120(1). Applicant: Public Works Division — Surface Water Management Kent Smith, Surface Water Management Project Engineer (253) 835-2753 kent.smith cit offederalwa .corn Location: 33333 Pacific Highway South, Parcels 172104-9026, 172104-904, & 7681900-0020 Lead Agency: City of Federal Way — Community Development Department Staff Contact:. Natalie Kamieniecki, Associate Planner (253) 835-2638, natalie.kami eniecki Acityoffederalway.com The city's Responsible Official has determined that the proposal does not have a probable significant adverse impact on the environment, and an Environmental Impact Statement (EIS) is not required under RCW 43.21 C.030(2)(c). This decision was made after review of a completed environmental checklist and other information on file with the city. A completed environmental checklist and supporting documents are available for review at the City of Federal Way Community Development Department (Federal Way City Hall, 33325 8`i' Avenue South, Federal Way, WA 98003, 253-835-7000), from 8 a.m. to 5 p.m., Monday through Friday. This DNS is issued under WAC 197-11-340(2). The lead agency will not act on this proposal for 14 days from the date of issuance. Comments must be submitted by 5:00 p.m. on March 29, 2019. Unless modified by the city, this determination will become final following the comment deadline. Any person aggrieved by the city's determination may file an appeal with the city within 21 days of the above comment deadline. You may appeal this determination to the Federal Way City Clerk (address above), no later than 5:00 p.m. on April 19, 2019, by a written letter stating the reason for the appeal of the determination. You should be prepared to make specific factual objections. Responsible Official: City of Federal Way Community Development Director Brian Davis Date Issued: March 15. 2019 Signature: . Brian Davis, Community Development Director CITY OF ��.. Federal Way Centered on Opportunity March 15, 2019 Mr. Kent Smith, SWM Project Engineer City of Federal Way — PW/SWM 33325 8th Avenue South Federal Way, WA 98003 keg t.sr3ith�,,6t,�o ffederahw ay.co.m CITY HALL 33325 8th Avenue South Federal Way, WA 98003-6325 (253) 835-7000 www. cityoffederalway.. com Jim Ferrell, Mayor FILE Re: File #18-103439-AD; ADMINISTRATIVE DECISION Partial Exemption for City of Federal Way Surface Water Management South 336th/Highway 99 Tightline and Water Quality Facility 33333 Pacific Highway South, Federal Way/Parcels 172104-9026,172104-904, & 7681900-0020 Dear Mr. Smith: This letter responds to your August 2, 2018, request for partial exemption from Federal Way Revised Code (FWRC) 19.145, Article III, "Fish and Wildlife Habitat Conservation Areas" to install an essential public facility consisting of a tightline and enhanced water quality facility located within a type F-stream channel at the above -referenced location. This letter, Administrative Decision 18-103439-AD, grants that partial exemption authorization, based on the submitted materials, and upon the following: • FWRC 19.145.120(1) provides the director the ability to issue a partial exemption from the permitting requirements contained in FWRC 19.145, Article III, "Fish and Wildlife Habitat Conservation Areas," for, "the placement of an essential public facility, public utility or other public improvements in a critical area if no practical alternative with less impact on the critical(s) area exists." The contributing area providing runoff through this location is approximately 250 acres, with a large portion of the area being impervious surface from both the public right-of-way, Pacific Avenue South, and adjacent off site properties. The proposed project will provide enhanced basic water quality treatment, reducing the concentration of suspended soils and reducing dissolved copper and zinc. Due to the topography, large treatment area, and high flow rate, the only feasible option available is to tightline the stream segment between the existing closed conveyance system. "The specific location and extent of the intrusion into the critical area must constitute the minimum necessary encroachment to meet the requirements of the public facility or utility and not pose an unreasonable threat to the health, safety, or welfare on or off the subject property." Excavation will occur within the stream setback with the least amount of vegetation removal possible; and the location of the tightline is matched, to the greatest extent possible, to the centerline of the existing drainage. Sand filter and stormwater wetland treatment systems require a larger -area than is available at the site to treat the large flow rate and level of suspended solids. Constructing the pipeline system is the most feasible option, considering the limited area available onsite, existing surrounding on and off site improvements, topographic constraints, and the city's requirement for enhanced basic treatment. Mr. Kent Smith Page 2 of 2 March 15, 2019 "The intrusion shall attempt to protect and mitigate impacts to the critical area function and values. The `public utility and other public improvements' shall not include improvements whose primary purpose is to benefit a private development, including without limitation interior roads or privately owned detention facilities installed within or during the construction of a residential subdivision, binding site plan, or other commercial development." Mitigation for the proposal includes four off site Surface Water Management Capital Improvement Projects including, but not limited to, the Hylebos Basin Conservation Property Acquisition; West Hylebos Education Center and wail at Brook Lake; West Hylebos Watershed Trail, South 373rd stream crossing re-route and restoration; and South 344th Street water flow control facility. Based on the proposal and application materials, the I have determined that the proposed public improvement meets these criteria and intent of the partial exemption and is hereby granted. This administrative decision shall not waive compliance with future City of Federal Way codes, policies, and standards relating to this site. Compliance with the provisions of this chapter does not constitute compliance with other federal, state, and local regulations and permit requirements that may be required. The applicant is responsible for complying with these requirements, apart from the process established in this chapter (FWRC 19.145.040[4]). If you have any further questions or need additional information, please contact Associate Planner Natalie Kamieniecki at natalie.kanveniecki@cityoffederalwa; .com, or 253-835-2638. Sincerely, Irian Davis Community Development Director c: Natalie Kamieniecki, Associate Planner 18-103439-00-AD Doa LD, 78683 State of Washington DEPARTMENT OF FISH AND WILDLIFE Mailing Address: 1775 12'h Ave. NW Suite 201, Issaquah, WA 98027 March 29, 2019 City of Federal Way Community Development Department ATTENTION: Natalie Kamieniecki, Associate Planner 33325 8th Avenue South Federal Way, Washington 98003 Dear Ms. Kamieniecki: SUBJECT: Proposed South 3361h/Highway 99 Tightline and Water Quality Facility, Tributary to West Branch of Hylebos Creek, King County, WRIA 10.0013 The Washington Department of Fish and Wildlife (WDFW) has reviewed the above -referenced proposed stream culverting and water quality improvement project and has the following comments at this time. The study by Landau Associates has shed some light on the issues with this project, which is proposed in a city -designated fish and wildlife conservation area. Because this is type F water, I am not legally allowed to permit a non -fish -passable structure in the stream. It is important for us to work together to remove streams from culverts, rather than to put them in culverts. More effort also needs to be made to remove downstream barriers and restore perennial flows in this stream system. There is also no mitigation proposed for the project. The best mitigation in this case is to not do the project and to place any water quality treatment improvements outside of state waters to treat the water before it reaches the stream. Another potential mitigation would be to remove 1.5 times the length of the proposed culvert from a suitable F water elsewhere, preferably in the same drainage basin. If the City of Federal way wants to pursue a project at this location, I suggest a joint meeting to discuss it with the Muckleshoot Tribe and the permitting agencies, including WDFW, the US Army Corps of Engineers and the city planner. Thank you for the opportunity to provide these comments. If there are any questions concerning this, please contact me at 425-313-5683 or larry.fisher@dfw.wa.gov. WDFW appreciates the opportunity to collaborate with the City of Federal Way in our efforts to preserve, protect, perpetuate, and manage the fish and wildlife resources of the state of Washington. Sincerely, a-� Larry Area Habitat Biologist LF:lf COFederalWayS336tightlineSEPA.docx cc: WDFW: Reinbold, SEPA Coordinator MIT Fisheries: Fox, Walter MUCKLESHOOT INDIAN TRIBE Fisheries Division 39015 - 172"d Avenue SE • Auburn, Washington 98092-9763 Phone: (253) 939-3311 • Fax: (253) 931-0752 March 29, 2019 Ms. Natalie Kamieniecki Associate Planner Community Development Department 33325 8th Ave S Federal Way, WA 98003 RE: South 336th/Highway 99 Tightline and Water Quality Facility. File No. 18-103437-SE. Determination of Non -Significance Dear -Ms. Kamieniecki Our Habitat Program has reviewed the DNS and checklist for the City of Federal Way's proposal to tightline approximately 500 linear feet of a fish -bearing stream and install a water quality stormwater treatment facility. We have concerns that this project will permanently block upstream access to fish habitat and compromise salmon production in this watershed. We offer the following comments in the interest of protecting and restoring the Tribe's treaty -protected fisheries resources. The SEPA checklist notes that no fish were observed during the limited site visits. This is inadequate to conclude non -fish presence. To reclassify this stream as a non -fish bearing stream, the applicant must apply through the Washington Department of Natural Resources for a water type change modification proposal, where rigorous documentation of habitat characteristics must be provided. As part of this work, existing natural downstream fish barriers must be documented in accordance with the Washington Department of Fish and Wildlife's Barrier Assessment Manual (Barber et al. 2009 - hLtps,//wdfw'wa.gov/Sublications/00061). If natural barriers exist downstream, then a protocol electrofishing survey based on Washington State Forest Practices Board Manual Section 13 should be conducted to ensure there are no resident salmonids that could be impacted. Unless natural barriers downstream have been documented and fish absence is absolutely verified based on multiple surveys during multiple flow events over multiple years, then the applicant should assume that this stream has presumed fish use and habitat in accordance with WAC 222-16-031. Based on the assumption fish are present in this stream according to the F water type noted in the SEPA checklist, fish access must be maintained. The proposed closed conveyance system will likely create a permanent upstream blockage for fish. The proposed piped conveyance will constrict flows and create water velocities too great for salmon to pass. Further, the proposed stormwater treatment will also create impassable features for salmon. The truncation of available fish habitat upstream by this proposed facility will reduce salmon production. Therefore, we recommend that the project be redesigned to avoid these impacts and provide us with an opportunity to review the revised project. We appreciate the opportunity to review this SEPA permit application and request written responses. Please let me know if you have questions (253-876-3121 or martin.fox@muckleshoot.nsn.us). Sincerely, Martin J. Fox, Ph.D. Fisheries Biologist 41k CIT Federal Way COMMUNITY DEVELOPMENT DEPARTMENT 33325 81h Avenue South Federal Way, WA 98003-6325 253-835-2607; Fax 253-835-2609 pialiniiig@cityoffederalwgky.com «"vw.c i tyoffed e ral way. com NOTICE OF APPLICATION SIGN INSTALLATION CERTIFICATE Project Name: Hwy q9 5 3�6M -r Af ii e- qlid U'�fc- QuuJ l Project File No: Project Address: 33333 Faca',,L H, Installed By: ke,41Lf 5 ►, 0'a Date of Installation: 3 2( i q Location of Installation: Fronf tV1tran-e of *Please forward pictures of the posted sign to the project's planner.* Ari Swi 1, i l"o 4's i ilwi l—il-id'i d~id-i d_i J%0-1 dui dsi d'i i" d`id+id'id-b d+i M'i dwi d$i d-i dsi d'i dwi d'i dii w. •w. -u. .w. e. -w. w. er wr wr a• •c+. wr a. a or a. wr wr •w. �w. w. wr .. wr wr �w. e. •wr •or w. wr �. I hereby testify that the sign installed fully complies with the installation standards outlined in Federal Way Revised Code (FWRC) Title 19 `Zoning and Development Code' and that the sign will be maintained until a final decision is issued on the land use action and/or environmental threshold determination. I understand that failure to return this certificate within five days of posting may result in delays, notice of corrections, and re -mailings at the applicant's expense. KC"m S � I � Installer's Name Installer's Signature 3IZZ 1 Date Z.53-$35-- 253 Phone Bulletin #036 —March 7, 2018 Page 1 of I k:\Handouts\Sign Installation Certificate STATE OF WASHINGTON, COUNTY OF KING } AFFIDAVIT OF PUBLICATION PUBLIC NOTICE Ken Spurrell, being first duly sworn on oath that he is the Legal Advertising Representative of the Federal Way Mirror a weekly newspaper, which newspaper is a legal newspaper of general circulation and is now and has been for more than six months prior to the date of publication hereinafter referred to, published in the English language continuously as a weekly newspaper in King County, Washington. The Federal Way Mirror has been approved as a Legal Newspaper by order of the Superior Court of the State of Washington for King County. The notice in the exact form annexed was published in regular issues of the Federal Way Mirror (and not in supplement form) which was regularly distributed to its subscribers during the below stated period. The annexed notice, (Ad #848432) a: Public Notice Published 1 time(s) beginning on 03/15/2019 and ending on 03/15/2019. The full amount of the fee char or said foregoing publication is the sum of $128.85. Ken Spurrell Legal Advertising Representative, Federal Way Mirror Subscribed and sworn to me this 15th day of Um %t ,�. ► f� 10 w waaaaatal NOTAR �' r Allen F. em46tary Public for thead,,'gf �toi, $y iding in Tacoma, Washington �r+�'_02,Z�, fl� City of Federal Way aaa2 ,�` FWM848432 I LEGAL INVOICE Sound Publishing Unit Main 11323 Commando Rd W Everett WA 98204 City of Federal Way Community Development Dept. 33325 8th Ave South Federal Way, WA 98003 Legal Description: City Notices DET. OF NONSIG. Ordered By: Issues Ordered: TINA PIETY 1 Start Date: 03/15/2019 03/15/2019 F I L Account # 239428 Invoice# FWM848432 Legal # FWM848432 Published: Federal Way Mirror Stop Date: 03/15/2019 Due: $128.85 Please return this w h payment. Questions? Call i-8oU-485-4920 City of Federal Way Account # 239428 Community Development Dept. Invoice# FWM848432 33325 8th Ave South Federal Way, WA 98003 Due: $128.85 Federal Way NOTICE DETERMINATION OF NONSIGNIFICANCE (DNS) South 336th/Highway 99 Tlghtline and Water Duality Facility File No:18-103437-SE ]Description: Propose to Ughtiine (convert from open channel to closed pipe flow) approximately 500 linear feet of an existing Intermittent Typa-F stream, and install a water quality stormwater treatment facility. The completed project will pro- vide advanced storm water IreatmenI in accordance with the King County Surface Water Design Manual (KCSWDM). The project Is considered an essential public facility and has received partial exemption approval (file #18-i03439-AD) in accordance with Federal Way Revised Code (FWRC) 19,145.120(1). Applicant: Public Works Division - Surface Water Management Kent Smith, Surface Water Management Project Engineer (253) 835-2753 k offedera om Location: 33333 Pacific Highway South, Parcels 172104-9026,172104-9D4, & 7681900-0020 Lead Agency: City of Federal Way - Community Development Department Staff Contact: Natalie Kamieniecki, Associate Plan- ner (253) 835-2638, natalie. mieniacklOcilyo- The city's Responslble Official has determined that the proposal does not have a probable signlfl- cant adverse impact on the environment, and an Environmental impact Statement (EIS) is not re- qulred under RCW 43.21C.030(2)(c). This decislon was made after review of a completed environmen- tal checklist and other Information on file with the city. A completed environmental checklist and sup- porting documents are available for review at the City of Federal Way Community Development De- partment (Federal Way City Hall, 33325 Bth Avenue South, Federal Way, WA 98003, 253-835-7000). from 8 a.m. to 5 p.m., Monday through Friday. This DNS is issued under WAC 197-11-340(2). The lead agency will not act on this proposal for 14 days from the date of issuance. Comments must be subm[Red by 5.,00 p.m. on March 29. 2019. Un- less modified by the city, this determination will become final following the comment deadline. Any person aggrieved by the city's determination may file an appeal with the city within 21 days of the above comment deadline, You may appeal this de- termination to the Federal Way City Clerk (address above), no later than 5:00 p.m. on April 19, 2019. by a written letter staling the reason for the appeal of the determination. You should be prepared to make specific factual objections. Published In the Federal Way Mirror on March 15, 2019 #848432 CITY OF Federal Way DEPARTMENT OF COMMUNITY DEVELOPMENT 33325 8th Avenue South Federal Way WA 98003 253-835-7000; Fax 253-835-2609 www,cit offederaiwa .coati DECLARATION OF DISTRIBUTION I, E. Tina Piety hereby declare, under penalty of perjury of the laws of the State of Washington, that a: ❑ Notice of Land Use Application/Action ❑ Notice of Determination of Significance (DS) and Scoping Notice I] Notice of Environmental Determination of Nonsignificance (SEPA, DNS) ❑ Mitigated Environmental Determination of Nonsignificance (SEPA, MDNS) ❑ Notice of Land Use Application & Optional DNS/MDNS ❑ FWRC Interpretation 0 Other ❑ Land Use Decision Letter ❑ Notice of Public Hearing before the Hearing Examiner ❑ Notice of Planning Commission Public Hearing ❑ Notice of LUTC/CC Public Hearing ❑ Notice of Application for Shoreline Management Permit ❑ Shoreline Management Permit ❑ Adoption of Existing Environmental Document Was ❑x emailed ❑ mailed ❑ faxed and/or ❑ posted to or at each of the attached addresses on March 15 . 2019. Project Name S _3 36th/Hwy 99 Ti htline and Water Quality Facilit File Number(s) 18-103437-SE Signature Date March 15 2019 CITY OF L441 %Q Federal Way Centered on Opportunity NOTICE DETERMINATION OF NONSIGNIFICANCE (DNS) South 3361h/Highway 99 Tightline and Water Quality Facility File No: 18-103437-SE Description: Propose to tightline (convert from open channel to closed pipe flow) approximately 500 linear feet of an existing intermittent Type-F stream, and install a water quality stormwater treatment facility. The completed project will provide advanced stormwater treatment in accordance with the King County Surface Water Design Manual (KCSWDM). The project is considered an essential public facility and has received partial exemption approval (file #18-103439-AD) in accordance with Federal Way Revised Code (FWRC) 19.145.120(1). Applicant: Public Works Division — Surface Water Management Kent Smith, Surface Water Management Project Engineer (253) 835-2753 kent.smith deit offederalwa .cam Location: 33333 Pacific Highway South, Parcels 172104-9026, 172104-904, & 7681900-0020 Lead Agency: City of Federal Way — Community Development Department Staff Contact: Natalie Kamieniecki, Associate Planner (253) 835-2638, natalie.kamieniecki@cityoffederalwgy.com The city's Responsible Official has determined that the proposal does not have a probable significant adverse impact on the environment, and an Environmental Impact Statement (EIS) is not required under RCW 43.21 C.030(2)(c). This decision was made after review of a completed environmental checklist and other information on file with the city. A completed environmental checklist and supporting documents are available for review at the City of Federal Way Community Development Department (Federal Way City Hall, 33325 8th Avenue South, Federal Way, WA 98003, 253-835-7000), from 8 a.m. to 5 p.m., Monday through Friday. This DNS is issued under WAC 197-11-340(2). The lead agency will not act on this proposal for 14 days from the date of issuance. Comments must be submitted by 5:00 p.m. on March 29, 2019. Unless modified by the city, this determination will become final following the comment deadline. Any person aggrieved by the city's determination may file an appeal with the city within 21 days of the above comment deadline. You may appeal this determination to the Federal Way City Clerk (address above), no later than 5:00 p.m. on April 19, 2019, by a written letter stating the reason for the appeal of the determination. You should be prepared to make specific factual objections. Responsible Official: City of Federal Way Community Development Director Brian Davis Date Issued: March 15 2019 Signature: Brian Davis, Community Development Director LOCATION MAP Ws SUZVI NE ANDERSON US ARMY CORPS/ENGINEERS US FISH & WILDLIFE SERVCE ATTN REGULATORY BRANCH 510 DESMOND DR SE #102 PO BOX 3755 LACEY WA 98503 SEATTLE WA 98124 wfwoctapAfws.gov suzanne.1.anderson usace.army. mi DEPT OF ECOLOGY SEPA UNIT PO BOX 47703 OLYMPIA WA 98504-7703 se are ister ec .wa. ov LARRY FISHER (freshwater) WDFW AREA HABITAT BIOLOGIST 1775 12T" AVE NW STE 201 ISSAQUAH WA 98027 lar .fisher dfw.wa. ov BRANDON REYNON PUYALLUP TRIBE OF INDIANS HISTORIC PRESERVATION DEPT 3009 E PORTLAND AVE TACOMA WA 98404 brandon.re non u allu tribe.com JAMEY TAYLOR DNR SEPA CENTER PO BOX 47015 OLYMPIA WA 98504-7015 sepacenter .dnr.wa_gov MUCKLESHOOT INDIAN TRIBE FISHERIES DIVISION ENVIRONMENTAL REVIEWER 39015 172ND AVE SE AUBURN WA 98092 ka ren.wa Ite rCa7 mucklesh oat. nsn. us DENNIS LEWARCH THP OFFICE SUQUAMISH TRIBE 18490 SUQUAMISH WAY SUQUAMISH WA 98392 dlewarch a2suguamish.nsn.us DEPT OF ARCHAEOLOGY & HISTORIC PRESERVATION PO BOX 48343 OLYMPIA WA 98504-8343 sepaPdahp.wa.gov WA NATURAL HERITAGE DNR PO BOX 47014 OLYMPIA WA 98504-7014 se p ace nter Adnr.wa. ov LAURA MURPHY TRIBAL ARCHAEOLOGIST MUCKLESHOOT INDIAN TRIBE 39015 172ND AVE SE AUBURN WA 98092 laura.mur h muckleshoot.nsn.us DEPARTMENT OF COMMUNITY DEVELOPMENT A�k 33325 8th Avenue South Federal Way WA 98003 CITY OF 253-835-7000; Fax 253-835-2609 Fedelocil Way www.cit o#fe erc�lwa com DECLARATION OF DISTRIBUTION I, E. Tina Piety hereby declare, under penalty of perjury of the laws of the State of Washington, that a: ❑ Notice of Land Use Application/Action ❑ Notice of Determination of Significance (DS) and Scoping Notice El Notice of Environmental Determination of Nonsignificance (SEPA, DNS) ❑ Mitigated Environmental Determination of Nonsignificance (SEPA, MDNS) ❑ Notice of Land Use Application & Optional DNS/MDNS ❑ FWRC Interpretation ❑ Other ❑ Land Use Decision Letter ❑ Notice of Public Hearing before the Hearing Examiner ❑ Notice of Planning Commission Public Hearing ❑ Notice of LUTC/CC Public Hearing ❑ Notice of Application for Shoreline Management Permit ❑ Shoreline Management Permit ❑ Adoption of Existing Environmental Document Was El emailed ❑ mailed ❑ faxed and/or ❑ posted to or at each of the attached addresses on March 13 2019. Project Name S 336th Hwv 99 Ti htline and Water Qualit Facility File Number(s) 18-103437-SE Signature r = 1 ' Date March 13, 2019 • � �CITY OF Federal Way Centered on Opportunity NOTICE DETERMINATION OF NONSIGNIFICANCE (DNS) South 336'h/Highway 99 Tightline and Water Quality Facility File No: 18-103437-SE Description: Propose to tightline (convert from open channel to closed pipe flow) approximately 500 linear feet of an existing intermittent Type-F stream, and install a water quality stormwater treatment facility. The completed project will provide advanced stormwater treatment in accordance with the King County Surface Water Design Manual (KCSWDM). The project is considered an essential public facility and has received partial exemption approval (file #18-103439-AD) in accordance with Federal Way Revised Code (FWRC) 19.145.120(1). Applicant: Public Works Division — Surface Water Management Kent Smith, Surface Water Management Project Engineer (253) 835-2753 kent.smith@cilyoffederalway.com Location: 33333 Pacific Highway South, Parcels 172104-9026, 172104-904, & 7681900-0020 Lead Agency: City of Federal Way — Community Development Department Staff Contact: Natalie Kamieniecki, Associate Planner (253) 835-2638, nata1ie.kamieniecki -) ityaffederalwU.co The city's Responsible Official has determined that the proposal does not have a probable significant adverse impact on the environment, and an Environmental Impact Statement (EIS) is not required under RCW 43.21C.030(2)(c). This decision was made after review of a completed environmental checklist and other information on file with the city. A completed environmental checklist and supporting documents are available for review at the City of Federal Way Community Development Department (Federal Way City Hall, 33325 8`h Avenue South, Federal Way, WA 98003, 253-835-7000), from 8 a.m. to 5 p.m., Monday through Friday. This DNS is issued under WAC 197-11-340(2). The lead agency will not act on this proposal for 14 days from the date of issuance. Comments must be submitted by 5:00 p.m. on March 29, 2019. Unless modified by the city, this determination will become final following the comment deadline. Any person aggrieved by the city's determination may file an appeal with the city within 21 days of the above comment deadline. You may appeal this determination to the Federal Way City Clerk (address above), no later than 5:00 p.m. on April 19, 2019, by a written letter stating the reason for the appeal of the determination. You should be prepared to make specific factual objections. Published in the Federal Way Mirror on March 15, 2019 Tina Pie From: Sent: To: Cc: Subject: Received, thank you. Ken Spurrell <legals@tacomadailyindex.com> Wednesday, March 13, 2919 9:23 AM Tina Piety Natalie Kamieniecki Re: Legal Notice Ken Spurrell Publisher Direct: 253-232-5219 Internal: 15001 Fax: 253-627-2253 15 Oregon Ave, Suite 101, Tacoma, WA 98409 IR Sound Publishing Man Print Rates -Online Rates Media Kit Sound lnfo On Wed, Mar 13, 2019 at 9:17 AM Tina Piety CFina.Piet er cit offederalwa .comma wrote: Hello, Please publish the attached legal notice (S 330h and Hwy 99 Tightline DNS, 18-103437-SE) in the Federal Way Mirror's Friday (3/15/2019) issue. Please furnish an affidavit of publication. This is for the Community Development account 83722477. Thank you, Tina E. Tina Piety, CAP -OM Administrative Assistant II _ Federal Way 1 +Community Development Department 33325 81h Avenue South Federal Way, WA 98003-6325 Phone:253/835-2601 Fax: 253/835-2609 www. cs Evoffedera[ way.com DEPARTMENT OF COMMUNITY DEVELOPMENT A�k 33325 8fh Avenue South Federal Way WA 98003 CITY OF 253-835-7000; Fax 253-835-2609 Federal Way www.cityoffederalway.com DECLARATION OF DISTRIBUTION 1, E. Tina Pietv hereby declare, under penalty of perjury of the laws of the State of Washington, that a: ❑ Notice of Land Use Application/Action ❑ Notice of Determination of Significance (DS) and Scoping Notice 0 Notice of Environmental Determination of Nonsignificance (SEPA, DNS) ❑ Mitigated Environmental Determination of Nonsignificance (SEPA, MDNS) ❑ Notice of Land Use Application & Optional DNS/MDNS ❑ FWRC Interpretation ❑ Other ❑ Land Use Decision Letter ❑ Notice of Public Hearing before the Hearing Examiner ❑ Notice of Planning Commission Public Hearing ❑ Notice of LUTC/CC Public Hearing ❑ Notice of Application for Shoreline Management Permit ❑ Shoreline Management Permit ❑ Adoption of Existing Environmental Document Was ❑ emailed [H] mailed ❑ faxed and/or ❑ posted to or at each of the attached addresses on March 14 2019, Project Name S 336th/HWy 99 Ti htline and Water Quality Facility File Number(s) 18-103437-SE Signature _ L�-- ! 7"--� Date March 14 2019 CITY OF F e d e r a I VV a y Centered on Opportunity NOTICE DETERMINATION OF NONSIGNIFICANCE (DNS) South 336"'/Highway 99 Tightline and Water Quality Facility File No: 18-103437-SE Description: Propose to tightline (convert from open channel to closed pipe flow) approximately 500 linear feet of an existing intermittent Type-F stream, and install a water quality stormwater treatment facility. The completed project will provide advanced stormwater treatment in accordance with the King County Surface Water Design Manual (KCSWDM). The project is considered an essential public facility and has received partial exemption approval (file #18-103439-AD) in accordance with Federal Way Revised Code (FWRC) 19.145.120(1). Applicant: Public Works Division — Surface Water Management Kent Smith, Surface Water Management Project Engineer (253) 835-2753 kent.smith@a cityoffederalway.eom Location: 33333 Pacific Highway South, Parcels 172104-9026, 172104-904, & 7681900-0020 Lead Agency: City of Federal Way — Community Development Department Staff Contact: Natalie Kamieniecki, Associate Planner (253) 835-2638, n at a l ie. kam i e niec ki(a)c ityoffederalway; cam The city's Responsible Official has determined that the proposal does not have a probable significant adverse impact on the environment, and an Environmental Impact Statement (EIS) is not required under RCW 43.21 C.030(2)(c). This decision was made after review of a completed environmental checklist and other information on file with the city. A completed environmental checklist and supporting documents are available for review at the City of Federal Way Community Development Department (Federal Way City Hall, 33325 8`h Avenue South, Federal Way, WA 98003, 253-835-7000), from 8 a.m. to 5 p.m., Monday through Friday. This DNS is issued under WAC 197-11-340(2). The lead agency will not act on this proposal for 14 days from the date of issuance. Comments must be submitted by 5:00 p.m. on March 29, 2019. Unless modified by the city, this determination will become final following the comment deadline. Any person aggrieved by the city's determination may file an appeal with the city within 21 days of the above comment deadline. You may appeal this determination to the Federal Way City Clerk (address above), no later than 5:00 p.m. on April 19, 2019, by a written letter stating the reason for the appeal of the determination. You should be prepared to make specific factual objections. Published in the Federal Way Mirror on March 15, 2019 LOCATION MAP KM King County-FMD PUB Health Address 500 4th Ave #830, Seattle, WA 98104 Federal Way Sch Dist #210 33330 8th Ave S, Federal Way, WA 98003 Muth Service Center P.O. Box 23699, Federal Way, WA 98093 BT Property Investments LLC 35109 Pacific Hwy S, Federal Way, WA 98003 Hassen Properties Inc. 3727 S 194th, Seattle, WA 98188 Kindercare Learning Centers 650 NE Holladay St #1400, Portland, OR 97232 Valley Cities Counseling & 33405 8th Ave S Suite 200, Federal Way, WA 98003 My Angel Corporation 33023 47th PI S, Federal Way, WA 98001 Hoefer Holdings LLC 16503 Railroad Wy, Snohomish, WA 98296 Ewing & Clark 2110 Western Ave, Seattle, WA 98121 Hee & Hyun Corp 2756 SW 327th St, Federal Way, WA 98023 Kurtz James T + Ming Ming Su- 23802 SE 468th Way, Enumclaw, WA 98022 13th Place South Property L 33308 13th PI S Ste 1, Federal Way, WA 98003 NYH Properties LLC 963 South 293rd St, Federal Way, WA 98003 Killin Time Ranch LLC P.O. Box 2299, Buckley, WA 98321 SKC Investments Inc. 33210 Pacific Hwy S, Federal Way, WA 98003 Dowell Stephen L 430 Glenwood Lane, Kent, WA 98030 Dowell Stephen L 430 Glenwood Lane, Kent, WA 98030 Fair Corporation 14602 SE 62nd St, Bellevue, WA 98006 Arthur & Shirley Inc. P.O. Box 3858, Federal Way, WA, 98063 Huang Yun-Hsiang 33330 Pacific Hwy S, Federal Way, WA 98003 Gravity Coffee P.O. Box 7557, Bonny Lake, WA 98391 Granston AAP LLC 801 2nd Ave #1000, Seattle, WA 98104 .� P e—Yn 33431 13th PI S, 98003 7681900070 1211 S 332nd St, 98003 9265010055 1200 S 336th St, 98003 9265030055 33505 13th PI S, 98003 9265030053 1230 S 336th St, 98003 9265030050 33504 13th PI S, 98003 9265030035 1336 S 336th St, 98003 9265030040 1500 S 336th St, 98003 9265030030 33525 Pacific Hwy S, 98003 9265030020 33501 Pacific Hwy S, 98003 9265030010 33427 Pacific Hwy S, 98003 1721049112 33400 13th PI S, 98003 7681900045 33308 13th PI S, 98003 7681900040 Vacant 7681900030 33207 Pacific Hwy S, 98003 1721049020 33210 Pacific Hwy S, 98003 7978200005 No site address 7978200010 33216 Pacific Hwy S, 98003 7978200015 33230 Pacific Hwy S, 98003 7978200020 33320 Pacific Hwy S, 98003 7978200025 33330 Pacific Hwy S, 98003 7978200045 33510 Pacific Hwy S, 98003 7978200050 33530 Pacific Hwy S, 98003 7978200060 } N Z MAT o►� M M L_-ER + S 'Id H,L8T ;M, t� SMH 3T H S 1 -HILT M �❑ S 1Q'I HJXCOS SAM H,L.B.T Llu co M M O cM M LO M T_ M CY) co co (" S-AtAH-31JIOVd N _ co N M M CY) M c � o LI M ch co C) co c coco p M co 11, `�' c� O c ] CO CO m M M }� ca M o O M Vj x co U N cti co o [x-� . S 'Id HIM c M 3� LOCATION MAP wS Sewall Wetland Consulting, Inc. PO Brno 880 Phone: 2 34 59-0515 Fall City, WA 98024 RECEIVED AUG 0 2 2018 CITY OF FEDERAL. WAY COMMUNrrY DEVELOPMENT Jim Wolch BCRA 2106 Pacific Ave suite 300 Tacoma, WA 98402 RE: Telecare Stream Determination — 768190-0010 & 768190-0020 City of Federal Way, Washington SWC Job # 15-187 Dear Jim, This report describes our observations of jurisdictional streams and/or buffers on or within 100' of Parcels #768190-0010 & 768190-0020. These parcels are located on the east side of 13th Place S in the City of Federal Way, Washington (the "site"). Above: Vicinity Map of site The purpose of our investigation was to review the drainage features on the site to determine which if any, are jurisdictional streams. The City of Telecare/# 15-187 Sewall Wetland Consulting, Inc. December 7, 2015 Page 2 Federal Way Commercial Site Inspection Maps for the site depict a south flowing drainage entering the eastern side of the site, as well as a westerly flowing drainage along the south boundary of the eastern parcel. .4 it R Al x� J .. �• --, Above: City of Federal Way mapping of drainages on the east side of the site. OBSERVATIONS The site consists of an abandoned paved area on the western parcel, as well as a disturbed forested area on the east. Several abandoned vagrant camps with associated trash and debris were noted in the forested area. A deeply dug ditch enters the east side of the site and flows into a culvert with a trash rack which enters an underground storm system and is assumed to flow westerly in a culvert. The ditch contains several check dams, and based upon the low flows observed during our site visits in November following periods of heavy rain, this appears to be an Telecare/#15-187 Sewall Wetland Consulting, Inc. December 7, 2015 Page 3 intermittent flowing feature. Although this feature has been channelized, it does appear to contain some natural flow and appears to be a ditched stream. Given its apparent seasonal flow, lack of fish access to the channel, this stream appears to best meet the criteria of a Type Ns water. According to FWMC 19.145.270.1. Type Ns streams have a 35' buffer measured from the OHWM. Type Ns stream on east side of site looking north from culvert. As previously described, a second mapped drainage is shown on the City of Federal Way maps along the south side of the eastern parcel. This consists of a poorly defined artificially created overflow from the Type Ns stream. On the east side of the Type Ns stream about 15' north of the Telecare/# 15-187 Sewall Wetland Consulting, Inc. December 7, 2015 Page 4 culvert, is a rip -rap lined overflow area cut in the top of the ditch. There is, no well-defined drainage to the west as shown on the 'ity map. T lier e are several trash rack lined catch basin type features on an asphalt lined depression along the southeast side which appear to enter a vault. In order to get a definitive determination on these features I had Larry Fisher, the area habitat biologist for WDFW visit the site with me on November 12, 2015 to determine which if any of these features meet the definition of a stream. As detailed in the email follow up to our site visit (attached), Larry agreed that only the eastern ditch contained a stream and the one depicted flowing west is an artificial overflow feature and not a stream. Telecare/#15-187 Sewall Wetland Consulting, Inc. December 7, 2015 Page 5 If you have any questions in regards to this report or need additional information, please feel free to contact me at (253) 859-0515 or at esewall(@,sewallwc.com. Sincerely, Sewall Wetland Consulting, Inc. Ed Sewall Senior Wetlands Ecologist PWS #212 Attached: email correspondence with WDFW rage i of ,+ Ed Sewall From: "Fisher, Larry D (DFW)" <Larry.Fisher(a-),dfw.wa.gov> Date: Tuesday, November 17, 2015 7:53 AM To: "Ed Sewall" <esewall(a-),sewallwc.com> Subject: RE: Federal Way Ed: Thanks for summarizing our meeting so effectively. I agree with what you wrote below. Larry Fisher WDFW Area Habitat Biologist 1775 12th Ave NW Suite 201 Issaquah, WA 98027 425-313-5683 FAX 425-427-0570 Ce I I : 425-449-6790 <')(0)>< <')(())>< From: Ed Sewall [mailto:esewall@sewallwc.com] Sent: Monday, November 16, 2015 11:24 AM To: Fisher, Larry D (DFW) Subject: Re: Federal Way Larry, Thanks for meeting me on the Telecare site in Federal Way last week to review the mapped streams/drainages as shown on the below City of Federal Way map. This email is to confirm that you are in agreement that the only stream on the site is the drainage that crosses from north to south along the eastern edge of the site. After our site visit you confirmed that the drainage shown below on the City map going from east to west across the south end of the site is a totally artificial feature and would not be considered a stream by WDFW. Thanks! Ed Sewall Sewall Wetland Consulting, Inc. (253)859-0515 12/7/2015 r ary /- vi -r From: Fisher, Larry D (DFW) Sent: Thursday, November 12, 2015 8:32 AM To: Ed Sewall Subject: RE: Federal Way OK, Ed, see you about 1:45. Larry Fisher WDFW Area Habitat Biologist 1775 12th Ave NW Suite 201 Issaquah, WA 98027 425-313-5683 FAX 425-427-0570 Cell: 425-449-6790 <'){{}}>< <'){{}}>< From: Ed Sewall (maiito:esewail sewaliwc.comj Sent: Thursday, November 12, 2015 8:20 AM To: Fisher, Larry D (DFW) Subject: Re: Federal Way Larry, you can park right along road on 13th Place if front of the site. Ed 12/7/2015 rage i of 4 , From: Fisher, Larry D (DFW) Sent: Thursday, November 12, 2015 7:44 AM To: Ed Sewall Subject: RE: Federal Way I have the address. I think we need to identify a parking location. Larry Fisher WDFW Area Habitat Biologist 1775 12th Ave NW Suite 201 Issaquah, WA 98027 425-313-5683 FAX 425-427-0570 Cell: 425-449-6790 <')((}}>< <')(f}}>< From: Ed Sewall fmailto:esewall@sewallwc.coml Sent: Wednesday, November 11, 2015 1:41 PM To: Fisher, Larry D (DFW) Subject: Re: Federal Way Yes, that will work, was the map I sent you good enough so you can find the site? Ed From: Fisher, Larry u {DFWy:! Sent: Tuesday, November 10, 2015 4:09 PM To: Ed Sewall Subject: RE: Federal Way Hi Ed: I can meet you there at 1:45 Thursday. Will that work for you? Larry Fisher WDFW Area Habitat Biologist 1775 12th Ave NW Suite 201 Issaquah, WA 98027 425-313-5683 FAX 425-427-0570 Cell: 425-449-6790 <')((}}>< <')((}}>< From: Ed Sewall[maiito:esewall@sevvallwc.com] Sent: Tuesday, November 10, 2015 9:13 AM To: Fisher, Larry D (DFW) Subject: Federal Way Larry, I have a site in Federal Way that's in the Hylebos drainage (see attached map). There is a stream along the east side of the site, but then there is this odd constructed overflow the City thinks is possibly a stream. Doesn't look it to me and I wanted to see if you had time to meet there and take a look at it with me. Let me know what would work. 12/7/2015 ica�v� vim Ed Sewall Sewall Wetland Consulting, Inc. PO Box 880 Fall City, WA 98024 (253) 859-0515 12/7/2015 RECciVED AUG 0 2 2018 Technical Memorandum MY OFFEDI,-'WAY COMMUNRY p'VEL PMENT To: Stacey Welsh, Senior Planner, City of Federal Way is From: Jeff Gray, Senior Wedand Biologist 11241 Willows Road NE Kevin O'Brien, Senior Ecologist Suite 200 Copies: File Redmond, WA 98052 Phone (425) 8224446 Date: January 20, 2016 Fax (425) 827-9577 Subject: Telecare — Stream Determination 33430 13"' Place South, Federal Way Parcels: #768190-0010 & #768190-0020 Project No.: 032285.0 At the request of the City of Federal Way (City), Otak, Inc. biologists reviewed the Stream Determination report (dated December 7, 2015) prepared by Sewall Wetland Consulting, Inc. for parcels #768190-0010 and #768190-0020 located at 33430 13t' Place South in Federal Way, Washington. The report was reviewed for consistency with the requirements of the Federal Way Revised Code (FWRC) Chapter 19.145, "Environmentally Critical Areas," especially FWRC 19.145.270 (Stream Buffers). A site visit to the subject properties was conducted on January 14, 2016 to inspect the stream and drainage features identified in the report, and identify any other potential regulated features per FWRC Chapter 19.145. This memorandum presents the findings of our review. Summary of Applicant's Stream Determination Report The Stream Determination report from Sewall Wetland Consulting, Inc. documents a southerly flowing stream on the east side of parcel #768190-0020 that flows into a culvert with a trash rack. The stream is described as an intermittently flowing system based on the low flows observed during site visits in November 2015 following periods of heavy rain. Due to the apparent seasonal flow and lack of fish access, the stream is suggested to meet the criteria of a Type Ns (non -fish habitat, seasonal) water, which has a 35-foot buffer measured from the ordinary high water mark (OHVvK. A second mapped drainage shown on the City map is described in the report as an artificially created overflow from the southerly flowing Type Ns stream. It is lined with riprap, and connects to the Type Ns stream approximately 15 feet north of the where the Type Ns stream enters the culvert and flows underground. The report states there is no well-defined drainage to the west of the Type Ns stream as shown on the City maps, and that it is an artificial overflow feature rather than a stream. Stacey Welsh, Senior Planner, City ofFederal Way Page 2 33430.13`h Place South, Telecare — Stream Determination January 20, 2016 Background Review and Field Inspection The Type Ns stream identified in the report is an unnamed tributary to West Fork Hylebos Creek. It flows into a culvert as described in the report, and then west toward 13`h Place SE in an underground pipe. It is situated high in the watershed, and receives stormwater runoff from the surrounding urban landscape. Regarding flow regime, the Type Ns stream is not mapped per the Washington Department of Natural Resources (WDNR) Forest Practices Application Mapping Tool, not by the Washington Department of Fish and Wildlife (WDFW) SalmonScape mapping application that utilizes the National Hydrography Dataset (NHD). Salmonscape shows an unnamed tributary with an intermittent flow regime beginning approximately 1000 feet south of the project site, which is also shown on WDNR's mapping tool as fish presence "Uknown". During the site inspection in January 14, 2016, the Type Ns stream was inspected for the presence of benthic macro invertebrates that would potentially indicate the presence of perennial flows. Three separate sections of the stream in the project area were inspected, but no benthic macroinvertebrates were observed. Due to the stream reach's location high in an urbanized watershed and lack of observed benthic macro invertebrates in the stream reach, Otak agrees that the stream has an intermittent flow regime. Regarding fish presence in the stream reach on the project site, WDFW's Salmonscape application shows two total fish passage blockages south of South 336`h Street due to dams that were previously constructed for flood control. It is highly unlikely that anadromous fish from the main stem of West Fork Hylebos Creek can reach the project site. Resident fish are also not likely present due to the intermittent flow regime of the Type Ns stream, and the apparent lack of aquatic habitat refugia available during low flow conditions north of South 336`h Street, as the stream is mainly piped underground. The other drainage feature (i.e., pathway) identified in the report and shown on the City map was not identified as a stream in the field due to the absence of an OHWM. Indicators of an OHWM, such as defined bed and banks and gravel sorting, were not observed. Additionally, no evidence of erosional scour or tilling was observed as English ivy (Hedera helix) was growing within the drainage feature. English ivy typically grows in upland habitats. The drainage feature directs overflow water from the Type Ns stream to three inlets that drop into the underground piped system presumably during storm events of sufficient magnitude, but not at a frequency to make an impression on the landscape separate from the surrounding uplands (see Photo 1). Stacey Welsh, Senior Plattner, City ofFederal Way 33430 13`' Place South, Telecare — Stream Determination Page 3 January 20, 2016 Summary of Findings We agree with the stream classification (Type Ns) and buffer width determination (35 feet) for the stream on the project site per FWRC 19.145.270. We also agree that the second drainage feature shown on the City map does not qualify as a stream per FWRC 19.145.260. The OHWM along the Type Ns stream should be delineated in the field and shown on any development proposal to ensure compliance with FWRC 19.145. Photo 1. Photo of drainage pathway (indicated by the blue arrow) that is indistinct from the surrounding uplands and overgrown with English ivy; view east. Natalie Kamieniecki From: Kent T. Smith Sent: Friday, March 01, 2019 5:30 PM To: Natalie Kamieniecki Subject: RE: Hwy 99/S 336th Tightline and Water Quality Project Hi Natalie, As a follow up to our conversation today I wanted to expand on the limitations of the project site and why the treatment option we selected was the most feasible. The contributing area providing runoff through this location is quite large, approximately 250 acres, with a large portion of that area being impervious surface from both public right of way and private property. Based on this contributing area the off-line water quality treatment flow rate is 21 cubic feet per second (cfs), and the on-line water quality treatment flow rate is 37 cfs. These rates are quite large and would require a very large facility that is not feasible based on their required size. Because of this high number we targeted a reduced treatment area accounting for only the right of way that contributes to the site. This reduced the contributing area to 37 acres with an offline treatment flow rate of 3.40 cfs. Any stormwater treatment within the City of Federal Way is required to be enhanced treatment which means there are only a few options for treatment; large sand filter, stormwater wetland, or a two -facility treatment train which involves use of a basic sand filter, sand filter vault, or linear sand filter vault and another treatment option or use of an emerging stormwater treatment technology which is the option we chose. As the reduced flow rate is still quite large the sand filter and stormwater wetland still require a large area to treat the flow and become infeasible due to the limited area available onsite and due to the topography and existing site improvements. Thanks, Kent T Smith City of Federal Way SWM Project Engineer 33325 8"' Ave S. Federal Way, WA 98003 253-835-2753 From: Kent T. Smith Sent: Friday, February 22, 2019 11:06 AM To: Natalie Kamieniecki Subject: RE: Hwy 99/S 336th Tightline and Water Quality Project Hi Natalie, I just wanted to check in to see if the SEPA was sent out for comments and if not is there anything else you need from me? Thanks, Kent T Smith City of Federal Way SWM Project Engineer 33325 8t" Ave S. Federal Way, WA 98003 253-835-2753 From: Natalie Kamieniecki Sent: Thursday, February 07, 2019 3:43 PM To: Kent T. Smith Subject: RE: Hwy 99/S 336th Tightline and Water Quality Project Hi Kent, Can you send me the provisional letter from WDFW that is referenced in you letter? Thanks! From: Kent T. Smith Sent: Thursday, February 07, 2019 3:19 PM To: Natalie Kamieniecki Subject: RE: Hwy 99/S 336th Tightline and Water Quality Project Hi Natalie, Attached is a letter requesting a partial exemption for the project. If you need a hard copy please let me know and I will drop one off. Thanks, Kent T Smith City of Federal Way SWIM Project Engineer 33325 8t" Ave S. Federal Way, WA 98003 253-835-2753 From: Natalie Kamieniecki Sent: Friday, February 01, 2019 11:37 AM To: Kent T. Smith Subject: Hwy 99/S 336th Tightline and Water Quality Project Hi Kent, Before Planning can issue the partial exemption we need additional analysis from SWM that the proposal meets the partial exemption criteria: (1) Essential public facilities, public utilities and other public improvements. The director may permit the placement of an essential public facility, public utility or other public improvements in a critical area if no practical alternative with less impact on the critical area(s) exists. The specific location and extent of the intrusion into the critical area must constitute the minimum necessary encroachment to meet the requirements of the public facility or utility and not pose an unreasonable threat to the health, safety, or welfare on or off the subject property. The intrusion shall attempt to protect and mitigate impacts to the critical area function and values. The "public utility and other public improvements" shall not include improvements whose primary purpose is to benefit a private development, including without limitation interior roads or privately owned detention facilities installed within or during the construction of a residential subdivision, binding site plan, or other commercial development. The director may require supporting documentation to demonstrate compliance with partial exemptions. Please let me know if you have questions. Sincerely, Natalie Kamieniecki Associate Planner Federal Way 33325 8th Avenue South Federal Way, WA 98003-6325 Phone:253/835-2638 Fax: 253/835-2609 www.citvoffederalway.com RECEIVED REQUEST FOR ADMINISTRATIVE DECISION �� DEPARTMENT OF COMMUNITY DEVELOPMENT CITY OF 33325 8`h Avenue South Federal Way AUG 0 2 2018 Federal Way, WA 98003-6325 253-835-2607;Fax 253-835-2609 CITY OF FEDERALWAY www.cityoffederalway.com COMMUNITY DEVELOPMENT FILE NUMBER ! y -_/ 0 Date —" Applicant NAME PRIMARY PHONE Ke*,r� i 253 - 835- Z?S 3 BUSINESS/ORGANIZATION ALTERNATE PHONE ZWM MAILING ADDRESS E-MAIL 353 Z5 'ZK Aye 5 {CeAt. s wi r,"ci yo�{eael'u� a .cc CITY STATE ZIP FAX Fed6ra_1 WA 9$003 253-835-2iol Property Address/Location 33333 �°`�' f << �"��" >re `c ct occµr,n ..t .e1 s l� 10q`Z0K :46S11000ZO and 17z10Lf 1026 Description of Request duesf -Foy rGr�rTr�co.� oveo, ��,►¢r^f eu�emp I C3n FesF{de,." Fzy,S ed �oQce �°c{ rerl %�. 1 �i 7, 120(�) T'a/fin� Ems►+; fr`a/! S . �{Q ro jed r4 �c �' IDS a►t 2ssGA S r o� ( aw i c Ul1 i �� / .�mr sforNlv+o.'FGr 'l re,. 0A4 conveyance List/Describe Attachments 5f PA re ,, fs 6LAJ cover' ic" . For Staff Use ❑ Code Interpretation/Clarification ❑ . Critical Areas Letter/Analysis/Peer Review ❑ Request for Extension (Land Use/Plat Approval) ❑ Revisions to Approved Permit ❑ Tree Removal ❑ Zoning Compliance Letter W -h•&1-e No Fee No Fee (Actual Cost if Applicable) Check Current Fee Schedule Check Current Fee Schedule - No Fee - Check Current Fee Schedule Bulletin #079 — January 4, 2016 Page 1 of 1 k:\IIandouts\Req_uest for Administrative Decision CITY of - _- Federal Way Department of Community Development 33325 8`h Avenue South Federal Way, WA 98003-6325 253-835-2607; Fax 253-835-2609 ww%v.cit offederalM.corn SEPA ENVIRONMENTAL CHECKLIST Purpose of Checklist Governmental agencies use this checklist to help determine whether the environmental impacts of your proposal are significant. This information is also helpful to determine if available avoidance:, minimization or compensatory mitigation measures will address the probable significant impacts or if an environmental impact statement will be prepared to further analyze the proposal. Instructions for Applicants This environmental checklist asks you -to describe some basic information about your proposal. Please answer each question accurately and carefully, to the best of your knowledge. You may need to consult with an agency specialist or private consultant for some questions. You may use "not applicable " or "does not apply" only when you can explain why it does not apply and not when the answer is unknown. You may alsc attach or incorporate by reference additional studies reports. Complete and accurate answers to these questions often avoid delays with the SEPA process as well as later in the decision -making process. The checklist questions apply to all parts of your proposal, even if you plan to do them over a period of time or on different parcels of land. Attach any additional information that will help describe your proposal or its environmental effects. The agency to which you submit this checklist may ask you to explain your answers or provide additional information reasonably related to determining if there may be significant adverse impact. Instructions for Lead Agencies Please adjust the format of this template as needed. Additional information may be necessary to evaluate the existing environment, all interrelated aspects of the proposal and an analysis of adverse impacts. The checklist is considered the first but not necessarily the only source of information needed to make an adequate threshold determination. Once a threshold determination is made, the lead agency is responsible for the completeness and accuracy of the checklist and other supporting documents. Use of Checklist for Nonproject Proposals For nonproject proposals (such as ordinances, regulations, plans and programs), complete the applicable parts of sections A and B plus the SUPPLEMENTAL SHEET FOR NONPROJECT ACTIONS (part D). Please completely answer all questions that apply and note that the words "project," "applicant," and "property or site" should be read as "proposal," "proponent," and "affected geographic area," respectively. The lead agency may exclude (for non -projects) questions in Part B - Environmental Elements that do not contribute meaningfully to the analysis of the proposal. RECEIVED JAN 18 2019 CITY OF FEDERAL WAY MMMUNITY DEVELOPMENT Bulletin #050 — October 17, 2016 Page 1 of 17 k:\Handouts\Environmental Checklist 4 CITY OF Federal Way A. BACKGROUND 1. Name of proposed project, if applicable: S 336th /HWY 99 Tightline and Water Quality Facility 2. Name of applicant: City of Federal Way Public Works Department Address and phone number of applicant and contact person: Department of Community Development 33325 8`4 Avenue South Federal Way, WA 98003-6325 253-835-2607;Fax 253-835-2609 %Yww.cit ❑flederalway.com Kent T Smith (253-835-2753), 33325 8th Ave South, Federal Way, WA 98003 4. Date checklist prepared: 10/17/2018, Revised Date 1/17/2019 Agency requesting checklist: City of Federal Way Community Development Department 6. Proposed timing or schedule (including phasing, if applicable): Construction scheduled for summer 2019 7. Do you have any plans for future additions, expansion, or further activity related to or connected with this proposal? If yes, explain. No other activity by the City is planned. The owner of the parcel may have plans for future development. List any environmental information you know about that has been prepared, or will be prepared, directly related to this proposal. Wetland and Waterway Delineation Report prepared by Landau and Associates dated December 21, 2018, a stream analysis prepared for a neighboring development by Sewell Wetland Consulting Inc. dated 12/7/15, Otak Technical Memorandum dated 1/20/16 in response to stream analysis, topographic survey including analysis of tree types in the vicinity. Do you know whether applications are pending for governmental approvals of other proposals directly affecting the property covered by your proposal? If yes, explain. No applications for other proposals directly affecting the property are currently pending. 10. List any government approvals or permits that will be needed for your proposal, if known. Bulletin #050 — October 17, 2016 Page 2 of 17 k:\Handouts\Environmental Checklist 4�� CITY OF Federal Way Department of Community Development 33325 8 h Avenue Soutli Federal Way, WA 98003-6325 253-835-2607;Fax 253-835-2609 wtv►v.citvo [Tederal,vay.cQm Department of the Army Corps of Engineers permit, Washington State Department of Fish and Wildlife Hydraulic Permit Approval (HPA), NPDES Construction Stormwater General Permit. 11. Give brief, complete description of your proposal, including the proposed uses and the size of the project and site. There are several questions later in this checklist that ask you to describe certain aspects of your proposal. You do not need to repeat those answers on this page. (Lead agencies may modify this form to include additional specific information on project description.) Proposal to tightline, convert from open channel to closed pipe flow, an existing Type-F stream along with the addition of a water quality stormwater treatment facility providing advanced stormwater treatment in accordance with the King County Surface Water Design Manual. Project will include clearing and grading of a portion of the site, excavation of existing stream bed, installation of bedding material, installation of new storm sewer pipe, installations of 5 new catch basins, installation of 2 new water quality structures, and import of material to backfill all installations, bring to grade and provide proper cover. Disturbed area of project is approximately 30,000 square feet. Primary site area is 2.4 acres. 12. Location of the proposal. Give sufficient information for a person to understand the precise location of your proposed project, including a street address, if any, and section, township, and range, if known. If a proposal would occur over a range of area, provide the range or boundaries of the site(s). Provide a legal description, site plan, vicinity map, and topographic map, if reasonably available. While you should submit any plans required by the agency, you are not required to duplicate maps or detailed plans submitted with any permit applications related to this checklist. Primary site address is 33333 Pacific Hwy S, Federal Way, WA, 98003. SE quarter, section 17, township 21, range 4. Legal description: LOT 1 LESS POR FOR RD (AS PER SCC 02-2-19486-9KNT) OF KC SHORT PLAT #677160 REC #7710260533 SD SP DAF - S 3/4 OF SE 1/4 OF SE 1/4 OF. SEC 17-21-4 LESS N 170 FT LESS S 340 FT LESS HWY B. ENVIRONMENTAL ELEMENTS 1. Earth a. General description of the site: (circle one): Fla •ol[itt illy, steep slopes, mountainous, other b. What is the steepest slope on the site (approximate percent slope)? Approximately 15% c. What general types of soils are found on the site (for example, clay, sand, gravel, peat, muck)? If you know the classification of agriculttral soils, specify them and note any agricultural land of long-term commercial significance and whether the proposal results in removing any of these soils. Onsite soils are specified as Everett-Alderwood gravelly sandy loams d. Are there surface indications or history of unstable soils in the immediate vicinity? If so, describe. Bulletin #050 — October 17, 2016 Page 3 of 17 kAH and outs\Environmental Checklist AkCITY OF Federal Way Department of Community Development 33325 8`h Avenue South Federal Way, WA 98003-6325 253-835-2607;Fax 253-835-2609 www. c it vn f feciera Tway. corn Based on site visits and an examination of historical data, no indications of soil instability or a history of soil instability were discovered. Local and County maps were examined to assess soil instability. e. Describe the purpose, type, total area, and approximate quantities and total affected area of any filling, excavation, and grading proposed. Indicate source of fill. Grading, filling, and excavation are expected in order to place proposed storm sewer pipes and stormwater treatment structures, along with removal of existing storm structures related to existing seasonal stream which includes some existing storm pipe and outlet and inlet structures. Disturbed area is approximately 30,000 square feet, with approximately 300 cubic yards of fill. f. Could erosion occur as a result of clearing, construction, or use? If so, generally describe. Erosion is possible as a result of clearing and construction however steps to mitigate erosion potential such as silt fencing, catch basin inlet protection, a stabilized construction entrance, and other measures as necessary for erosion control. In addition, this project is scheduled for the traditionally dry season months of August and September. g. About what percent of the site will be covered with impervious surfaces after project construction (for example, asphalt or buildings)? A slight increase, less than 100 square feet, in the amount of impervious surface is expected. Added impervious surface area is due to storm sewer manholes and access doors. The existing onsite impervious coverage is approximately 50,000 square feet. h. Proposed measures to reduce or control erosion, or other impacts to the earth, if any: A stabilized construction entrance, silt fencing, and storm drain inlet protection are planned. 2. Air a. What types of emissions to the air would result from the proposal during construction, operation, and maintenance when the project is completed? If any, generally describe and give approximate quantities if known. Typical emissions from construction vehicles and occasional, once or twice yearly, emissions from maintenance vehicles are expected for the project area. b. Are there any off -site sources of emissions or odor that may affect your proposal? If so, generally describe. No offsite sources of emissions are expected to affect the proposal. c. Proposed measures to reduce or control emissions or other impacts to air, if any: No measures to reduce or control emissions are expected as only occasional use of the project area is expected after project completion. Bulletin 4050 — October 17, 2016 Page 4 of 17 k:\Handouts\Environmental Checklist CITY OF Federal Way 3. Water a. Surface Water: Department of Community Development 33325 81h Avenue South Federal Way, WA 98003-6325 253-835-2607;Fax 253-835-2609 %vww. c it vn f federal way. corn 1) Is there any surface water body on or in the immediate vicinity of the site (including year-round and seasonal streams, saltwater, lakes, ponds, wetlands)? If yes, describe type and provide names. If appropriate, state what stream or river it flows into. A Type-F seasonal stream is present on the site. The stream flows through open and closed conveyance to the Kitts Conner stormwater ponds which at times can discharge through open and closed conveyance to the West Hylebos wetlands and eventually Hylebos Creek. 2) Will the project require any work over, in, or adjacent to (within 200 feet) the described waters? If yes, please describe and attach available plans. Work is required directly within and around the stream. 3) Estimate the amount of fill and dredge material that would be placed in or removed from surface water or wetlands and indicate the area of the site that would be affected. Indicate the source of fill material. Excavation of the stream bed as needed for alignment and drop are planned and quantity is unknown at this time. Construction is scheduled for the dry season and any flow will be diverted prior to the start of the project. Bedding and backfill material will be placed within the stream bed alignment. The source of fill is unknown at this time as it will be the choice of the selected contractor; however the fill material must meet City of Federal Way standards for clean structural fill. 4) Will the proposal require surface water withdrawals or diversions? Give general description, purpose, and approximate quantities if known. A temporary water diversion is expected in the event of a storm event during construction. A temporary dam or diversion technique will be placed within an upstream catch basin. 5) Does the proposal lie within a 100-year floodplain? If so, note location on the site plan. An examination of City and County maps did not show the project site within a 100 year floodplain. An examination of FEMA FIRM maps defined the project area within zone X which is an area determined to be outside the 500-year floodplain. , 6) Does the proposal involve any discharges of waste materials to surface waters? If so, describe the type of waste and anticipated volume of discharge. Discharge of waste materials to surface waters is not expected and project construction is proposed for a period when no flow of water will be present within the seasonal steam. b. Ground Water: Bulletin #050 — October 17, 2016 Page 5 of 17 k:\Handouts\Environmental Checklist CITY OF Federal Way Department of Community Development 33325 0 Avenue South Federal Way, WA 98003-6325 253-835-2607;Fax 253-835-2609 www.c[tva5pderalAva .cam 1) Will groundwater be withdrawn from a well for drinking water or other purposes? If so, give a general description of the well, proposed uses and approximate quantities withdrawn from the well. Will water be discharged to groundwater? Give general description, purpose, and approximate quantities if known. No groundwater wells are proposed with the project. Discharge to groundwater is not expected after project completion. 2) Describe waste material that will be discharged into the ground from septic tanks or other sources, if any (for example: domestic sewage; industrial, containing the following chemicals... ; agricultural; etc.). Describe the general size of the system, the number of such systems, the number of houses to be served (if applicable), or the number of animals or humans the system(s) are expected to serve. No waste material is expected to be discharged into the ground. No septic or sewage systems are proposed. Waste material from stormwater runoff shall be contained within the proposed stormwater treatment structures. c. Water runoff (including stormwater): 1) Describe the source of runoff (including storm water) and method of collection and disposal, if any (include quantities, if known). Where will this water flow? Will this water flow into other waters? If so, describe. Stormwater runoffonsite is conveyed through existing catch basins to the City stormwater system within Pacific Hwy S. Additional runoff from the project area is not expected as no impervious area will be added. 2) Could waste materials enter ground or surface waters? If so, generally describe. Waste materials are not expected to enter the ground or surface waters as existing runoff is channeled into the City storm system. 3) Does the proposal alter or otherwise affect drainage patterns in the vicinity of the site? If so, describe. The proposal will alter the current drainage pattern of the site from a seasonal stream to a closed piped conveyance. In order to alter the conveyance method a number of other projects providing conservation and preservation are planned to be implemented which have been identified to provide the most potential benefit to salmon recovery and were deemed potentially acceptable by the Washington State Department of Fish and Wildlife. d.Proposed measures to reduce or control surface, ground, and runoff water, and drainage pattern impacts, if any: Drainage will be tightlined and the finished ground surface will be stabilized will vegetation to minimize surface runoff in the project area. 4. Plants a. Check the types of vegetation found on the site: Bulletin #050 — October 17, 2016 Page 6 of 17 k:\Handouts\Environmental Checklist CITY OF Federal Inlay _x_deciduous tree: alder, maple, aspen, other evergreen tree: fir, cedar, pine, other x shrubs x grass pasture Department of Community Development 33325 8th Avenue South Federal Way, WA 98003-6325 253-835-2607;Fax 253-835-2609 ww%v.citvo fFederalway.com crop or gram Orchards, vineyards or other permanent crops. wet soil plants: cattail, buttercup, bullrush, skunk cabbage, other _water plants: water lily, eelgrass, milfoil, other x other types of vegetation — conifer trees, English Ivy, and Himilayan Blackberry b. What kind and amount of vegetation will be removed or altered? Deciduous trees, conifer trees, shrubs, grass, English ivy, and Himilayan Blackberry will be removed as a part of the proposed project. c. List threatened and endangered species known to be on or near the site. No threatened or endangered species were observed during site visits or in the survey which included a tree survey of the proposed project area. d. Proposed landscaping, use of native plants, or other measures to preserve or enhance vegetation on the site, if any: Permanent seeding will be utilized after the project completion to preserve natural vegetation. e. List all noxious weeds and invasive species known to be on or near the site. English Ivy and Himilayan Blackberry is present onsite. No other invasive or noxious species have been identified onsite. 5. Animals a. List any birds and other animals which have been observed on or near the site or are known to be on or near the site. Examples include: birds: hawk, heron, eagle, songbirds, other: mammals: deer, bear, elk, beaver, other: fish: bass, salmon, trout, herring, shellfish, other: Due to the presence of transient human activity no wildlife appears to be present onsite. The stream was identified as a Type-F waterway, which is defined as a stream that contains fish habitat, however the presence of fish was not observed during multiple site visits. b. List any threatened and endangered species known to be on or near the site. Bulletin #050 — October 17, 2016 Page 7 of 17 k:\Handouts\Environmental Checklist 4s� CITY OF Federal Way Department of Community Development 33325 8ch Avenue Soutli Federal Way, WA 98003-6325 253-835-2607; Fax 253-835-2609 www.cit yol7ederahvay.cosn An analysis of the surrounding area was completed by Landau and Associates and the presence of any threatened and endangered species was not observed. c. Is the site part of a migration route? If so, explain. The presence of migratory animals was not observed during any visits to the site. d. Proposed measures to preserve or enhance wildlife, if any: As a means to tightline the proposed seasonal stream, a number of other projects providing conservation and preservation are planned to be implemented which have been identified to provide the most potential benefit to salmon recovery and were deemed potentially acceptable by the Washington State Department of Fish and Wildlife. 5 current or future capital improvement projects were determined as supportive of providing mitigation benefits for the proposed tightline project. e. List any invasive animal species known to be on or near the site. The presence of invasive animal species was not observed during site visits. 6. Energy and Natural Resources a. What kinds of energy (electric, natural gas, oil, wood stove, solar) will be used to meet the completed projeefs energy needs? Describe whether it will be used for heating, manufacturing, etc. No energy is required to operate the facility after construction is complete. b. Would your project affect the potential use of solar energy by adjacent properties? If so, generally describe. The project should not have an effect on the potential use of solar energy by adjacent properties. The finished facility shall be primarily underground. c. What kinds of energy conservation features are included in the plans of this proposal? List other proposed measures to reduce or control energy impacts, if any: The proposed project will operate without the need for energy use so no energy conservation features are included. 7. Environmental Health a. Are there any environmental health hazards, including exposure to toxic chemicals, risk of fire and explosion, spill, or hazardous waste, that could occur as a result of this proposal? If so, describe. 1) Describe any known or possible contamination at the site from present or past uses. Based on site visits and an examination of historical records there do not appear to be any known or Bulletin #050 — October 17, 2016 Page 8 of 17 k:\Handouts\Environmental Checklist Department of Community Development 1�k 33325 81' Avenue South CITY OF Federal Way, WA 98003-6325 Federal Way253-835-2607; Fax 253-835-2609 www.cityqffederalwgy.com gy.com possible contamination onsite from past or present uses. 2) Describe existing hazardous chemicals/conditions that might affect project development and design. This includes underground hazardous liquid and gas transmission pipelines located within the project area and in the vicinity. Based on site visits and an examination of survey documents there do not appear to be any existing hazardous chemicals/conditions that might affect the project development. 3) Describe any toxic or hazardous chemicals that might be stored, used, or produced during the project's development or construction, or at any time during the operating life of the project. The proposed use does not involve the use or storage of any toxic or hazardous chemicals. 4) Describe special emergency services that might be required. No special emergency services are required. The project area will not involve any workers or residents after project completion. 5) Proposed measures to reduce or control environmental health hazards, if any: A water quality treatment structure is planned to improve existing water quality. b. Noise 1) What types of noise exist in the area which may affect your project (for example: traffic, equipment, operation, other)? No noise in the project vicinity will affect the project. The completed project will not involve any onsite workers or residents. 2) What types and levels of noise would be created by or associated with the project on a short- term or a long-term basis (for example: traffic, construction, operation, other)? Indicate what hours noise would come from the site. Short term construction noise is expected during normal working hours during the week day. No long term noise is expected as the proposed project will only involve stormwater conveyance and treatment without any mechanical equipment. 3) Proposed measures to reduce or control noise impacts, if any: The completed project will be underground which will minimize any noise impacts from running water. 8. Land and Shoreline Use Bulletin #050 — October 17, 2016 Page 9 of 17 k:\Handouts\Environmental Checklist CITY OF .;e Federal Way Department of Community Development 33325 81h Avenue South Federal Way, WA 98003-6325 253-835-2607;Fax 253-835-2609 www.cit vofPeder kyaay.com a. What is the current use of the site and adjacent properties? Will the proposal affect current land uses on nearby or adjacent properties? If so, describe. The subject property is utilized as commercial. Adjacent parcels are used as either commercial or vacant undeveloped land. The proposed project should not affect any current land uses on nearby or adjacent properties except to eliminate the existing setback from the seasonal stream. b. Has the project site been used as working farmlands or working forest lands? If so, describe. How much agricultural or forest land of long-term commercial significance will be converted to other uses as a result of the proposal, if any? If resource lands have not been designated, how many acres in farmland or forest land tax status will be converted to nonfarm or nonforest use? Based upon site visits and an examination of historical records the project site does not appear to have been used as working farmlands or working forest lands. No agricultural or forest land of long-term commercial significance will be converted to other uses. 1) Will the proposal affect or be affected by surrounding working farm or forest land normal business operations, such as oversize equipment access, the application of pesticides, tilling, and harvesting? If so, how: The proposal will not affect or be affected by surrounding working farm or forest land as there is no working farm or forest land in the vicinity. c. Describe any structures on the site. The proposal will not affect or be affected by surrounding working farm or forest land as there is no working farm or forest land in the vicinity. d. Will any structures be demolished? If so, what? No demolition of structures is proposed. e. What is the current zoning classification of the site? BC — community business f. What is the current comprehensive plan designation of the site? Based on an examination of the City's GIS maps there is currently no comprehensive plan designation for the site. g. If applicable, what is the current shoreline master program designation of the site? Not applicable. No shorelines present onsite. Bulletin #050 — October 17, 2016 Page 10 of 17 k:\Handouts\Environmental Checklist AN� CITY OF Federal Way Department of Community Development 33325 81h Avenue South Federal Way, WA 98003-6325 253-835-2607;Fax 253-835-2609 www.cityoffedera1sA,ay.co h. Has any part of the site been classified as a critical area by the city or county? If so, specify. Yes, the waterway was identified as a Type-F stream, streams that contain fish habitat. i. Approximately how many people would reside or work in the completed project? The completed project will not have any workers or residents. j. Approximately how many people would the completed project displace? The completed project will not displace any people. None currently work or reside within the project area. k. Proposed measures to avoid or reduce displacement impacts, if any: Not applicable. No measures are proposed to avoid or reduce displacement impacts. 1. Proposed measures to ensure the proposal is compatible with existing and projected land uses and plans, if any: The proposal is part of a City of Federal Way Capital Improvement Project and is consistent with the partial exemption process. in. Proposed measures to reduce or control impacts to agricultural and forest lands of long-term commercial significance, if any: Not applicable. No measures are proposed to reduce or control impacts to agricultural and forest lands. 9. Housing a. Approximately how many units would be provided, if any? Indicate whether high, middle, or low- income housing. No housing units are proposed. b. Approximately how many units, if any, would be eliminated? Indicate whether high-, middle-, or low-income housing. No housing units are proposed to be eliminated with the project. c. Proposed measures to reduce or control housing impacts, if any: Not applicable. 10. Aesthetics a. What is the tallest height of any proposed structure(s), not including antennas; what is the principal exterior building material(s) proposed? Bulletin #050 — October 17, 2016 Page 11 of 17 k:\Handouts\Environmental Checklist -�k CITY of Federal Way The proposal does not involve any structures. Department of Community Development 33325 8`h Avenue South Federal Way, WA 98003-6325 253-835-2607;Fax 253-835-2609 �v wwx itvo ffederalway. aom b. What views in the immediate vicinity would be altered or obstructed? No views in the immediate vicinity will be altered or obstructed by the proposed project. c. Proposed measures to reduce or control aesthetic impacts, if any: The completed project will be underground, eliminating any aesthetic impacts to property in the vicinity. 11. Light and Glare a. What type of light or glare will the proposal produce? What time of day would it mainly occur? No light or glare will be produced by the project. All finished work will be underground. b. Could light or glare from the finished project be a safety hazard or interfere with views? Not applicable. c. What existing off -site sources of light or glare may affect your proposal? No existing off site sources of light or glare are expected to affect the project. d. Proposed measures to reduce or control light and glare impacts, if any: Not applicable. 12. Recreation a, What designated and informal recreational opportunities are in the immediate vicinity? There are no designated or informal recreational opportunities in the immediate vicinity. b. Would the proposed project displace any existing recreational uses? If so, describe. Not applicable. No recreational uses exist onsite or in the immediate vicinity. c. Proposed measures to reduce or control impacts on recreation, including recreation opportunities to be provided by the project or applicant, if any: Not applicable. No recreation opportunities are proposed with the project. 13. Historic and Cultural Preservation a. Are there any buildings, structures, or sites, located on or near the site that are over 45 years old listed in or eligible for listing in national, state, or local preservation registers ? If so, specifically describe. Bulletin #050 — October 17, 2016 Page 12 of 17 k:\Handouts\Environmental Checklist k CITY OF N � Federal Way Department of Community Development 33325 8`h Avenue South Federal Way, WA 98003-6325 253-835-2607;Fax 253-835-2609 ►tiww.citvoffederal►va .com An examination through the Washington Information System for Architectural and Archaeological Records Data (WISAARD) did not identify any eligible or listed buildings, structures, or sites located on or near the site. b. Are there any landmarks, features, or other evidence of Indian or historic use or occupation? This may include human burials or old cemeteries. Are there any material evidence, artifacts, or areas of cultural importance on or near the site? Please list any professional studies conducted at the site to identify such resources. c. Describe the methods used to assess the potential impacts to cultural and historic resources on or near the project site. Examples include consultation with tribes and the department of archeology and historic preservation, archaeological surveys, historic maps, GIS data, etc. Preliminary examination of the project site has not indicated any evidence of Indian or historic use or occupation. No material evidence, artifacts, or areas of cultural importance appear to be present on or near the site. d. Proposed measures to avoid, minimize, or compensate for loss, changes to, and disturbance to resources. Please include plans for the above and any permits that may be required. Chosen contractor will be required to cease work if any potentially significant evidence is discovered onsite. Evaluation of significance by the proper individuals will be required before work can be resumed. 14. Transportation a. Identify public streets and highways serving the site or affected geographic area and describe proposed access to the existing street system. Show on site plans, if any. Pacific Hwy S serves the subject property with pre-existing access provided. No additional access points are proposed. b. Is the site or affected geographic area currently served by public transit? If so, generally describe. If not, what is the approximate distance to the nearest transit stop? Public transit is provided by King County Metro with the nearest transit stop approximately 500-600 feet away to the southwest. c. How many additional parking spaces would the completed project or non -project proposal have? How many would the project or proposal eliminate? No additional parking spaces are proposed or proposed to be eliminated. Bulletin #050 — October 17, 2016 Page 13 of 17 k:\Handouts\Environmental Checklist Department of Community Development 33325 0 Avenue South CITY OF Federal Way, WA 98003-6325 Fedora Way253-835-2607;Fax 253-835-2609 1vww.!zit ❑ffederalway.com d. Will the proposal require any new or improvements to existing roads, streets, pedestrian, bicycle or state transportation facilities, not including driveways? If so, generally describe (indicate whether public or private). No improvements to existing transportation facilities are required. Full frontage improvements are already present on Pacific Hwy S along the properties frontage. An easement or agreement for access to facility is required. e. Will the project or proposal use (or occur in the immediate vicinity of) water, rail, or air transportation? If so, generally describe. The project will not utilize water, rail, or air transportation and is currently not in the immediate vicinity to any water, rail, or air transportation. f. How many vehicular trips per day would be generated by the completed projector proposal? If known, indicate when peak volumes would occur and what percentage of the volume would be trucks (such as commercial and nonpassenger vehicles). What data or transportation models were used to make these estimates? The completed project is not expected to generate any significant new trips. The completed project does not require any onsite workers or residents. Periodic inspection and/or maintenance may occur once or twice yearly. g. Will the proposal interfere with, affect or be affected by the movement of agricultural and forest products on roads or streets in the area? If so, generally describe. No new traffic is expected from the project site so the project is not expected to affect or be affected by the movement of agricultural and forest products on roads or streets in the area. h. Proposed measures to reduce or control transportation impacts, if any: No measures are proposed to reduce or control transportation impacts as the project is not expected to generate any significant new traffic. 15. Public Services a. Would the project result in an increased need for public services (for example: fire protection, police protection, public transit, health care, schools, other)? If so, generally describe. The project is not expected to result in an increased need for public services. No workers or residents are expected in the project area after completion of project. b. Proposed measures to reduce or control direct impacts on public services, if any. The completed project will not require a need for an increased level of public services so no measures to reduce or control direct impacts are proposed. 16. Utilities Bulletin 4050 — October 17, 2016 Page 14 of 17 k:\Handouts\Environmental Checklist 1�k CITY OF Federal Way a. Circle utilities currently available at the site: Department of Community Development 33325 8th Avenue South Federal Way, WA 98003-6325 253-835-2607; Fax 253-835-2609 www.ci t yo1Ted oral way. com ectr�ci ura a Ater Esc servtc e iolt nrtary sewe eptic system, other Electricity, natural gas, water, refuse service, telephone service, and sanitary sewer service are all available onsite. No septic system is present onsite. b. Describe the utilities that are proposed for the project, the utility providing the service, and the general construction activities on the site or in the immediate vicinity which might be needed. No utilities are proposed for the project as none are required for the completed project. C. SIGNATURE The above answers are true and complete to the best of my knowledge. I understand that the lead agency is relying on them to make its decision. Signature: Name of Signee: } CW& rtiI Position and Agency/Organization: 5WM Terra '-i F rAwr• CI'f 0; Fcdomd Wa f µWt W,,,ks Date Submitted: t] 11519 Bulletin #050 — October 17, 2016 Page 15 of 17 k:\Handouts\Environmental Checklist CITY OF Federal Way Department of Community Development 33325 8th Avenue South Federal Way, WA 98003-6325 253-835-2607; Fax 253-835-2609 www.cilyoffederalway.com D. SUPPLEMENTAL SHEET FOR NONPROJECT ACTIONS (IT IS NOT NECESSARY to use this sheet for project actions) Because these questions are very general, it may be helpful to read them in conjunction with the list of the elements of the environment. When answering these questions, be aware of the extent the proposal, or the types of activities likely to result from the proposal, would affect the item at a greater intensity or at a faster rate than if the proposal were not implemented. Respond briefly and in general terms. 1. How would the proposal be likely to increase discharge to water; emissions to air; production, storage, or release of toxic or hazardous substances; or production of noise? Proposed measures to avoid or reduce such increases are: The completed project is not expected to increase discharge to water; emissions to air; production, storage, or release of toxic or hazardous substances, or production of noise. The projects purpose is to reduce pollutant load within existing stormwater open conveyance that runs through the project site. 2. How would the proposal be likely to affect plants, animals, fish, or marine life? Proposed measures to protect or conserve plants, animals, fish, or marine life are: The project has the potential to benefit plants, animals, fish, and marine life downstream through the removal of pollutants by the water quality pre-treatment and enhanced treatment structures. 3. How would the proposal be likely to deplete energy or natural resources? Proposed measures to protect or conserve energy and natural resources are: The proposal is not expected to deplete or natural resources except with regard to removal of onsite trees within the project vicinity. No energy is required to operate the stormwater treatment facilities. 4. How would the proposal be likely to use or affect environmentally sensitive areas or areas designated (or eligible or under study) for governmental protection; such as parks, wilderness, wild and scenic rivers, threatened or endangered species habitat, historic or cultural sites, wetlands, floodplains, or prime farmlands? Proposed measures to protect such resources or to avoid or reduce impacts are: Bulletin #050 — October 17, 2016 Page 16 of 17 k:\Handouts\Environmental Checklist CITY OF Federal May Department of Community Development 33325 8`h Avenue South Federal Way, WA 98003-6325 253-835-2607; Fax 253-835-2609 w ww. ci t yo f fcdera Tway. cam The proposal is not expected to use or affect any environmentally sensitive areas or areas designated for governmental protection. Based on an examination of King County GIS records through King County iMap and through the Washington Information System for Architectural & Archaeological Records Data (WISAARD) maps, there do not appear to be any environmentally sensitive areas or areas designated for governmental protection onsite or in the immediate vicinity. 5. How would the proposal be likely to affect land and shoreline use, including whether it would allow or encourage land or shoreline uses incompatible with existing plans? Proposed measures to avoid or reduce shoreline and land use impacts are: The proposal will eliminate the current stream setback requirement that extends on the project site and neighboring sites which is likely to encourage future land use in the immediate vicinity. A permanent SWM drainage maintenance easement for stormwater facilities will be required with the project which will prevent any structures from being placed within the easement area. 6. How would the proposal be likely to increase demands on transportation or public services and utilities? Proposed measures to reduce or respond to such demand(s) are: The current proposal is not expected to increase demand on transportation or public services and utilities. Current proposal does not involve the use of utilities or public services and no additional employees or residents are proposed. However, an increased demand on transportation or public services and utilities may occur with subsequent future developments onsite as a result of the proposed project increasing the development potential on nearby properties. 7. Identify, if possible, whether the proposal may conflict with local, state, or federal laws or requirements for the protection of the environment. The proposal is not anticipated to conflict with any local, state, or federal laws or requirements for the protection of the environment. A Washington State Joint Aquatic Resources Permit Application will be submitted to ensure all requirements for the protection of the environment are followed. Bulletin #050 — October 17, 2016 Page 17 of 17 k:\Handouts\Environmental Checklist MASTER LAND USE APPLICATION RECEIVED DEPARTMENT OF COMMUNITY DEVELOPMENT 33325 8'h Avenue South CITY OF Federal Way, WA 98003-6325 Feder253-835-2607; � �� AUG 0 Z 2��8 Fax 253-835-2609 d y www.citYofFederalway.com CITY OF FEDERAL WAY "IMMUNRY DEVELOPMENT APPLICATION NO(S) / l! 3 L/7 — -5 & Date Project Name 3�J�'►. Nw 9 �' hfr,��„� Wfer (��1rf Fae+�Ir Property Address/Location 35333 Par; Vi t Hwk 5 Parcel Numbers) 3:?7_e044i0q 142104?OZI 76$l9 000Zo Project Description G� e-i �e&rai Ww SWM rocci' {-o in5taii an a�Kde+► rar.nc{ wdFe• uAOY 4rew+ PLEASE PRINT Type of Permit Required Annexation Binding Site Plan Boundary Line Adjustment Comp Plan/Rezone Land Surface Modification Lot Line Elimination Preapplication Conference Process I (Director's Approval) Process II (Site Plan Review) Process III (Project Approval) Process IV (Hearing Examiner's Decision) Process V (Quasi -Judicial Rezone) Process VI SEPA w/Project - � 'SEPA Only. Shoreline: Variance/Conditional Use Short Subdivision Subdivision Variance: Connnercial/Residential Required Information Zoning Designation Comprehensive Plan Designation _Value of Existing Improvements Value of Proposed Improvements International Building Code (IBC): /rf occupancy Type Construction Type l+ and 5for+K Arad-- cc14ve to safer Applicant Name: Kt1J+ SfAJ* - Address: 333Z5 $A Ave S City/State: Fedees,( Nler, WA Zip: `tgoa 3 Phone: 2 53 - a 0- Z'4 S 3 Fax: ZS1_ 53:F- Z101 Email: ku►. S r'Fh'C.°cifya�eotCrwl way. rod• Signature: Agent (if different than Applicant) Name: Address: City/State: Zip: Phone: Fax: Email: Signature: Ownei41-- Natne: W5''�q Address: 9 City/state: Fe -a e •�' {'i`' + Zip: n 3- 6 41 b 3. Phone: Fax: 5 —3 �c_ ro/". Email: WCLS; ma y e Signature: � f,? 1-1 Bulletin #003 — January 1, 2011 Page 1 of 1 k:\Handouts\ivlaster Land Use Appneation CITY OF J � � V V a APPLICATION No(s) RECEIVED pp MASTER LAND USE APPLICATION DEPn'IYTMENT on COMMUNITY AUG O 2U�0 DEVELOPMENT 33325 81" Avenue South CITY OF FEDERAL WAY Fcdcral Way, WA 1.8003-6325 COMMUNITY DEVELOPMENT 253-835-2Ffl7; Fax 253-835-2609 w►vw.cil oi'I'cdar.�k►vay.c[1171 Date Project Name Property Address/Location ✓�353 Fa�C,'�rt Nw� $ Parcei NIunber(s) I�Z t0'�9oY�- f l a`I qD7 L 76BIR 00020 Project Description G, ear �Ls�G'�t� Ww� f ra'eef fn ingfall An u►,r��r r."ne( !w#� itwrfl� `l'reit�wt r1f �AG! �le� INT� S�'4rrr1 rwi++ CaNYd gidCE � S�Fc✓�t. PLEASE Plili\T Type of Permit Required _ Annexation Binding Site Plan _ Boundary Line Adjustment Comp Plan/Rezone Land Surface Modification Lot Line Eliinination Preapplication Confcrence Process I (Director's Approval) Process H (Sitc.I'lan Review) Process III (Project Approval) Process IV (Hearing Examiner's Decision) Process V (Quasi -Judicial Rezone) Process V1 SEPA w/Project SE -PA Only Shoreline: Variance/Conditional Use Short Subdivision Subdivision Varian= 'Cotmucrcial/Residential Required Information Applicant Name: K&I+ Sow,41L Address: 3332$ a ?A Av3 City/Slato: ge4'e"'IfW, r i WA Zip: `1' 00 5 Phone: 2375 3; V453 Fax:�i-$3S- Z��9 Email:}ct►+.S,ar'�is�ciyaeot�ra�wr+�r.�or. Signature:�� Agent (if difiereait than Applicant) Name: Address: City/State: Zip: Phone: Fax: Email: Signature: 1111 Owner ng Designation Can1prehcnsive Plah Designation Value of Existing hnprovements Value of Proposed Improvements International Building Corte (IBC): - AJ Occupancy Type Construction Type Name: '-Orc'F" Address: /080 MAJeldulo City/State: C CA 'Lip: 6)`� j PI3011e: 610 Fax: Sio g -2 ?9b % Entail: Ci:,ot.MACp Signature: Bollctin V003 — January 1, 2011 Page 1 of t lc\Haadouts\Mastcr Land Use Application RECEIVED 41k CITY OF 10';:ZSP Federal Way Date: August 1, 2018 AUG 0 2 20% CRY OF FED FOAL WAY MEMORANDUM CpMMUNfTY DEVFLOP�fENT To: Doc Hansen, Planning Manager From: Kent T Smith SWM Engineer Subject: S 336th/Hwy 99 Tightline and Water Quality Facility Public Works Public Works has plans for a Capital Improvement Project (CIP) to construct a new tightline and water quality treatment facility at S 3361h Street and Pacific Highway South in Federal Way. The project is to take place on private property over 3 parcels, 1721049047, 1721049026, and 7681900020. Parcel 1721049026 contains a right of way easement for a drainage facility and all the proposed new work will be contained within the existing easement area. Through discussions with Washington State Department of Fish and Wildlife (WDFW) a provisionally accepted mitigation plan was prepared by City staff that identified 5 proposed SWM CIP actions associated with conservation and restoration in the Hylebos Watershed as mitigation for the work to tightline the existing non -fish bearing seasonal stream. Attached is a letter to Larry Fisher with WDFW identifying the proposed mitigation projects along with an email response indicating the provisional acceptance. The proposed restoration activity described in this restoration plan is part of an on -going process through the City's CIP involving some work currently under construction and some planned for the near future. Please do not hesitate to request additional information or clarification if needed. Sincerely, Kent T Smith SWM Engineer Attachments: 1. Letter to WDFW 2. Response Email from WDFW Natalie Kamieniecki From: Fisher, Larry D (DFW) <Larry.Fisher@dfw.wa.gov> Sent: Monday, March 27, 2017 10:37 AM To: Theresa Thurlow Cc: Tony Doucette; Marwan Salloum; Reinbold, Stewart G (DFW) Subject: S 336th Project Tightline Proposal Hi Theresa: I received the letter and list of City projects in support of the S 336th Tightline Proposal. Hope you don't mind an email in response. I have reviewed the project list and determined that projects 3, 4, 6, 11, and 12 are supportive of providing mitigation benefits for the proposed tightline project. I do not consider projects which involve fish passage improvements as qualifying for mitigation benefits. I am congenial with you proceeding with the permitting of the S 336th Tightline Proposal with projects 3, 4, 6, 11, and 12 providing mitigation support. When applying for the Hydraulic Project Approval, please submit a revised letter -with the list revised to reflect this. Thankyou Larry Fisher WDFW Area Habitat Biologist 1775 12th Ave NW Suite 201 Issaquah, WA 98027 425-313-5683 FAX 425-427-0570 Cell: 425-449-6790 <'){{}}>< <'){{}}>< Wetland and Waterway Delineation Report South 336th Street Tightline and Water Quality Project Federal Way, Washington December 21, 2018 Prepared for City of Federal Way Public Works Department 33325 8th Avenue South Federal Way, Washington RECEIVED JAN 18 2019 CITY OF FEDERAL WAY COMMLN ;TY DEVELOPMENT LANDAU ASSOCIATES 130 2nd Avenue South Edmonds, WA 98020 (425)778-0907 Landau Associates Wetland and Waterway Delineation Report South 336th Street Tightline and Water Quality Project Federal Way, Washington This document was prepared by, or under the direct supervision of, the technical professionals noted below. Document prepared by: 7 — Steven Quarterman roject Manager Document reviewed by: Jennifer Wynkoop Quality Revie er Date: December 21, 2018 Project No.: 0238086.020.021 File path: \\edmdata0l\projects\238\086.020\WIP\CAR\Signature Page.docx Project Coordinator: MCS LANDAU ASSOCIATES y�7 Landau Associates EXECUTIVE SUMMARY The City of Federal Way (City) proposes to modify an existing surface water channel, located near South 336th Street and Pacific Highway South in Federal Way, Washington. Proposed modifications include converting the channel into a tightline conveyance and adding a three -structure treatment facility to enhance the water quality treatment of stormwater runoff from Pacific Highway South. Wetlands, surface waters, and/or their buffers may be within the jurisdiction of the U.S. Army Corps of Engineers (USACE) under Section 404 of the Clean Water Act, the Washington State Department of Ecology under the Washington State Water Pollution Control Act, and/or the City under the critical areas regulations (19.145) of the Federal Way Revised Code (FWRC). At the City's request, Landau Associates, Inc. (LAI) completed a delineation and assessment of wetland and waterway boundaries in the project area. This report summarizes the results of the wetland/waterway delineation. During the delineation, LAI identified one waterway (Waterway A) and determined that wetlands are not present in the project area. Waterway A is interpreted to be a Type F stream, subject to regulation by the City, the Washington Department of Fish & Wildlife (WDFW), and the USACE. The Type F designation is based on physical stream characteristics that provide fish habitat; however, fish are not expected in the waterway, given the presence of downstream fish -passage barriers and the lack of upstream refuge during low- or no -flow periods. Stream -type classification is subject to change if long-term, naturally occurring water quality parameters are identified that are incapable of supporting fish life, or based on further coordination with the Department of Natural Resources and other affected agencies. Pursuant to Chapter 19.145.270 of the FWRC, Waterway A is prescribed a standard buffer of 100 feet. Project impacts may be subject to partial exemption, as detailed in Chapter 19.145.120(1) of the FWRC, and permitting through the WDFW (Hydraulic Project Approval) and USACE (authorization under Section 404 of the Clean Water Act). Wetland and Waterway Delineation Report 0238086.020.021 South 336th Street Tightline and Water Quality Project W December 21, 2018 Landau Associates TABLE OF CONTENTS Page 1.0 INTRODUCTION..............................................................................................................................1-1 1.1 Site Description..................................................................................................................1-1 1.2 Regulatory Background......................................................................................................1-1 2.0 METHODOLOGY.............................................................................................................................2-1 2.1 Background Information Review........................................................................................2-1 2.2 Wetland Identification........................................................................................................2-1 2.3 Waterway Identification and Classification........................................................................2-2 3.0 WETLAND AND WATERWAY DELINEATION RESULTS....................................................................3-1 3.1 Background Information Review........................................................................................3-1 3.1.1 Wetlands.......................................................................................................3-1 3.1.2 Waterways and Fish Presence.........................................................................3-1 3.1.3 Soil ......................................... ....................................................................... 3-2 3.1.4 Floodplain......................................................................................................3-2 3.1.5 Land Use........................................................................................................3-2 3.1.6 Precipitation..................................................................................................3-2 3.2 Field Investigation..............................................................................................................3-2 3.2.1 Uplands..........................................................................................................3-3 3.2.2 Waterway A............................................................................... ................3-3 3.2.2.1 Waterway Determination.........................................................................3-4 4.0 REGULATORY ASSESSMENT. .... .... ....................... ........................................................................ 4-1 4.1 Preliminary Impact Assessment.........................................................................................4-1 5.0 CONCLUSIONS— .......................................... ..........................................................................5-1 6.0 USE OF THIS REPORT......................................................................................................................6-1 7.0 REFERENCES...................................................................................................................................7-1 Wetland and Waterway Delineation Report South 336th Street Tightline and Water Quality Project iv 0238086.020.021 December 21, 2018 FIGURES Figure Title 1 Vicinity Map 2 Study Area Map 3 Waterway Location Map TABLES Table Title 1 Methods for Wetland Delineation 2 Bankfull Width Measurements APPENDICES Appendix Title A Background Information Review Figures B Soil Profile Reports C Precipitation Data D Wetland Determination Data Forms E Selected Site Photographs Wetland and Waterway Delineation Report South 336th Street Tightline and Water Quality Project v Landau Associates 0238086.020.021 December 21, 2018 Landau Associates LIST OF ABBREVIATIONS AND ACRONYMS City....................................................................................................City of Federal Way DNR............................................................................ Department of Natural Resources Ecology........................................................... Washington State Department of Ecology FAC..................................................................................................................facultative FACU...................................................................................................facultative upland FACW.......................................................................................................facultative wet ft........................................................................................................................ foot/feet FWRC......................................................................................Federal Way Revised Code HPA....................................................................................... Hvdraulic Project Approval LAI.............................................................................. NI................................................................................ NRCS... ........... ................................................. ...Natur NW I............................................................................ 0 B L............................................................................ . OHWM....................................................................... RCW........................................................................... USACE......................................................................... USDA...................................:....................................... USGS........................................................................... WAC........................................................................... WDFW.......................................................... Washing Wetland and Waterway Delineation Report South 336th Street Tightline and Water Quality Project Vi ............... Landau Associates, Inc. ............................... no indicator Resources Conservation Service ...... National Wetlands Inventory ... ....................................obligate .......... ordinary high water mark Revised Code of Washington .... U.S. Army Corps of Engineers . U.S. Department of Agriculture ............... U.S. Geological Survey Nashington Administrative Code )n Department of Fish & Wildlife 0238086.020.021 December 21, 2018 Landau Associates This page intentionally left blank. Wetland and Waterway Delineation Report 0238086.020.021 South 336th Street Tightline and Water Quality Project vii December 21, 2018 Landau Associates 1.0 INTRODUCTION The City of Federal Way (City) proposes to modify an existing surface water channel, located near South 336th Street on King County parcels 1721049026, 1721049047, and 7681900020 (Figure 1). Proposed modifications include converting the channel into a tightline conveyance and adding a three -structure treatment facility to enhance water quality treatment of stormwater runoff from Pacific Highway South. LAI conducted a wetland/waterway delineation to help the City determine the extent, location, and classification of wetlands, waterways, and/or their buffers in and adjacent to the project area, which may be regulated by local, state, and/or federal agencies. This report provides the results of the wetland/waterway delineation. During the delineation, LAI identified one waterway (Waterway A) and determined that wetlands are not present in the project area.. 1.1 Site Description The approximately 5-acre project area is located within the Puyallup/White watershed (Water Resource Inventory Area 10) in Section 17 of Township 21 North, Range 4 East (Figure 2). In accordance with Section 19.145.410 of the Federal Way Revised Code (FWRC), the study area, which encompasses land within 225 feet (ft) of the project area, was included in the investigation (Figure 2). The extent of wetland/waterway habitat 225 ft beyond the project area was estimated by visual assessment and review of public domain sources. Review of the remaining study area was limited to observations made from public rights -of -way and information from public domain sources. The study area consists of undeveloped land, commercial developments, and portions of Pacific Highway South. 1.2 Regulatory Background Wetlands and certain waterways are regulated by federal, state, and local government agencies, and compliance with one agency does not necessarily fulfill the permitting requirements of other agencies. Section 404 of the federal Clean Water Act requires that the U.S. Army Corps of Engineers (USACE) authorize the discharge of dredged or fill material into "waters of the U.S." The Washington State Department of Ecology (Ecology) requires compliance with the State Water Pollution Control Act (Chapter 90.48 of the Revised Code of Washington [RCW]), and has the authority to certify state water quality in case of impacts to USACE jurisdictional "waters of the U.S.," per Section 401 of the Clean Water Act. Any work that will use, divert, obstruct, or change the bed or flow of state waters, including streams and rivers, must comply with the terms of a Hydraulic Project Approval (HPA), issued by the Washington Department of Fish & Wildlife (WDFW). A WDFW HPA is administered under Chapter 77.55 RCW and rules set forth in Washington Administrative Code (WAC) 173-220-110. Wetland and Waterway Delineation Report 0238086.020.021 South 336th Street Tightline and Water Quality Project 1-1 December 21, 2018 Landau Associates 2.0 METHODOLOGY Landau Associates, Inc. (LAI) performed a wetland and waterway investigation in accordance with the USACE's Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Western Mountains, Valleys, and Coast Region (2010), adopted by Ecology under WAC 173 22-035. The waterway investigation used methodology provided in Ecology's Determining the Ordinary High Water Mark for Shoreline Management Act Compliance in Washington State (Anderson et al. 2016). The USACE and Ecology recommend preliminary data -gathering and synthesis of available background information, followed by a field investigation. 2.1 Background Information Review LAI reviewed the following public domain resources to assess existing conditions and potential wetlands and waterways within the study area: • Aerial photograph of study area (Figure 2). • U.S. Geological Survey (USGS) topographic map (USGS 2013; Appendix A, Figure A-1). • U.S. Fish and Wildlife Service (USFWS) National Wetlands Inventory (NWI) map (USFWS 2015, Appendix A, Figure A-2). • City Critical Areas Map (City of Federal Way 2012). • U.S. Department of Agriculture (USDA), Natural Resources Conservation Service (NRCS) Soil Survey Geographic Database for King County (USDA, NRCS 2006; Appendix A, Figure A-3). • National Hydric Soils List (USDA, NRCS 2018a). • Flood data (FEMA 1996; Appendix A, Figure A-4). • Precipitation data (USDA, NRCS 2018b). ■ WDFW SalmonScape (WDFW 2018a). ■ Washington Water Quality Assessment and 303(d) List (Ecology). • Forest Practices Application Mapping Tool (DNR 2018). • City of Federal Way Hylebos Creek Fish Use and Habitat Technical Memorandum (HDR 2014). 2.2 Wetland Identification The USACE and Ecology outline a three -parameter (evaluation of vegetation, soil, and hydrology) approach for determining the presence or absence of wetlands. LAI biologists conducted the wetland - boundary verification and delineation using the onsite method in the USACE 2010 Regional Supplement. In accordance with the method, data are collected within the project area, at locations representative of typical wetlands and/or uplands. An area is determined to be a wetland if the following three criteria are met (see Table 1): • The dominant vegetation is hydrophytic. Wetland and Waterway Delineation Report South 336th Street Tightline and Water Quality Project 2-1 0238086.020.021 December 21, 2018 Landau Associates • Soils are hydric. ■ Wetland hydrology is present. 2.3 Waterway Identification and Classification Where accessible, the ordinary high water mark (OHWM) was identified in accordance with methodology developed by Ecology (Anderson et al 2016). In keeping with the methodology, LAI reviewed existing hydrologic data and observed field indicators, including hydrology, soils and sediments, vegetation, and marks of scouring. The boundaries of waterways extending outside of the study area were estimated using vegetation and hydrologic indicators observed from within the study area, aerial photographs, and/or other information from the background -information review. Stream type is based on Section 19.145.260 of the FWRC, in which streams are classified in accordance with the Washington State Department of Natural Resources (DNR) water typing system (WAC 222-16- 030). Stream classifications include: • Type S: Streams inventoried as "shorelines of the state," per Chapter 90.58 RCW and rules promulgated pursuant to Chapter 90.58 RCW. • Type F: Streams that contain fish habitat. • Type Np: Perennial non -fish habitat streams. • Type Ns: Seasonal non -fish habitat streams. WAC 222-16-030 identifies fish habitat as "...habitat which is used by any fish at any life stage at any time of the year, including potential habitat likely to be used by fish which could be recovered by restoration or management and includes off -channel habitat." According to WAC 222-16-030, the Interim Water Typing System established in WAC 222-16-031 is to be used until "fish habitat water typing maps" are adopted by the Washington State Forest Practices Board. Water type descriptions in the Interim Water Typing System are summarized as follows: • "Type 1 Water" means all waters, within the OHWM, inventoried as "shorelines of the state," per Chapter 90.58 RCW and rules promulgated pursuant to Chapter 90.58 RCW, but not including those waters associated with wetlands as defined in Chapter 90.58 RCW. + "Type 2 Water" means segments of natural waters that are not classified as Type 1 Water and have a high fish, wildlife, or human use. These are segments of natural waters and periodically inundated areas of associated wetlands. ■ "Type 3 Water" means segments of natural waters that are not classified as Type 1 or 2 Waters, and have moderate to slight fish, wildlife, or human use. These are segments of natural waters and periodically inundated areas of associated wetlands. ■ "Type 4 Water" means all segments of natural waters within the bankfull width of defined channels that are perennial, non -fish habitat streams. Perennial streams do not go dry in a year of normal rainfall, and include the intermittent dry portions of the perennial channel, below the uppermost point of perennial flow. Wetland and Waterway Delineation Report 0238086.020.021 South 3361h Street Tightline and Water Quality Project 2-2 December 21, 2018 Landau Associates "Type 5 Water" means all segments of natural waters within the bankfull width of the defined channels that are not Type 1, 2, 3, or 4 Waters. These are seasonal, non -fish habitat streams in which surface flow is not present for a portion of the year. These are seasonal, non -,fish habitat streams in which surface flow is not present for at least some portion of the year and are not located downstream from any stream reach that is a Type 4 Water. Type 5 Water must be physically connected by an aboveground channel system to Type 1, 2, 3, or 4 Waters. Per WAC 222-16-031, conversion of the Interim Water Typing System to the Permanent Water Typing System is as follows. The conversion was used to apply the state typing system to the FWRC. Water Type Conversion Permanent Water Typing Interim Water Typing Type "5" Type 1 Water Type "F" Type 2 and 3 Water Type "Np" Type 4 Water Type "Ns" Type 5 Water For the purposes of this investigation, LAI applied criteria for presumed fish use, as presented in the Interim Water Typing System (refer to the description of Type 3 water on page 2-2). Downstream fish - passage blockages (e.g., culverts) were expected to obstruct access to the project area, and fish presence was not confirmed. In accordance with WAC 222-16-031, waters with any of the following physical stream characteristics are presumed to have fish use: a. Stream segments having a defined channel of 2 ft or greater within the bankfull width in western Washington, and having a gradient of 16 percent or less. b. Stream segments having a defined channel of 2 ft or greater within the bankfull width in western Washington, and having a gradient greater than 16 percent and less than or equal to 20 percent, and having greater than 50 acres in contributing basin size in western Washington based on hydrographic boundaries. DNR indicates that waters with the physical characteristics of Type F streams, described in WAC 222- 16-031, are presumed to have fish use, unless a protocol survey or ID Team has verified otherwise (DNR website; accessed December 13, 2018). Survey protocols provided in the Forest Practices Board Manual Section 13 (Forest Practices Board 2002) state that determinations of fish absence can be applied only to streams where human -made fish blockages do not exist below the proposed survey reach. In these cases, the water type is determined by applying the physical characteristics in WAC 222-16-031. DNR, in consultation with WDFW, Ecology, and affected Indian tribes, may waive or modify these characteristics where evidence provides relative certainty that such waters do not support fish life (Forest Practices Board 2002). An example includes waters with confirmed, long-term, naturally occurring water quality parameters incapable of supporting fish life. Wetland and Waterway Delineation Report South 3361h Street Tightline and Water Quality Project 2-3 0238086.020.021 December 21, 2018 Landau Associates WAC 222-16-031 specifies that: "channel width and gradient means a measurement over a representative section of at least 500 linear feet with at least 10 evenly spaced measurement points along the normal stream channel but excluding unusually wide areas of negligible gradient such as marshy or swampy areas, beaver ponds and impoundments. Channel gradient may be determined utilizing stream profiles plotted from United States Geological Survey topographic maps." Bankfull width was measured at cross sections of the stream reach from accessible properties in the project area. Bankfull width was identified using the guidance provided in Section 2 of the Forest Practices Board Manual (2004). Bankfull width for streams is the lateral extent of the water surface elevation perpendicular to the channel at bankfull depth, where bankfull depth is the estimated water surface elevation required to completely fill the channel to the point above which water would enter the floodplain or intersect a terrace or hillslope. The measurements were averaged to determine bankfull width for the potential reach of the stream within the project area. Topographic data provided by the City were used to calculate stream slope, and the calculated slope was compared with the physical stream characteristics in WAC 222-16-031. Because WAC 222-16-031 does not define fish habitat, the definition provided in WAC 222-16-030 was applied for the study. LAI completed a qualitative habitat assessment that included characterization of in -stream, large, woody debris; riffles/pools; and channel bed material. The assessment also included a description of observed hydrology. Water quality parameters available from the Washington 303(d) list were reviewed to evaluate the potential presence of waters with confirmed, long-term, naturally occurring water quality parameters incapable of supporting fish life. Following WAC 222-16-031 and the water type conversion table referenced above, Chapter 19.145.270 of the FWRC prescribes the following standard buffer widths for each water type: a Type F stream —100 ft. • Type Np stream — 50 ft. • Type Ns stream — 35 ft. Wetland and Waterway Delineation Report 0238086.020.021 South 336th Street Tightline and Water Quality Project 2-4 December 21, 2018 Landau Associates 3.0 WETLAND AND WATERWAY DELINEATION RESULTS This section summarizes the results of the background -information review and the wetland/waterway investigation within the study area. 3.1 Background -Information Review LAI's review revealed the following information about wetlands, waterways, and soils within the study area. 3.1.1 Wetlands The City Critical Areas Map (2012), USGS topographic map (2013; Appendix A, Figure A-1), and NWI map (2015) do not identify any wetlands within the study area (Appendix A, Figure A-2). 3.1.2 Waterways and Fish Presence The USGS topographic map (2013) and DNR Forest Practices Application Mapping Tool (2018) do not identify any streams in the study area. However, the City Critical Areas Map (2012) identifies a segment of an unnamed tributary beginning just south of the study area on the south side of South 336th Street. The unnamed tributary flows to the West Hylebos Wetlands Park, located south of the project area. WDFW's Salmonscape website identifies an unnamed waterway in the study area as a tributary of West Hylebos Creek. West Hylebos Creek, south of South 348th Street, is habitat to coho salmon (O. kisutch), winter steelhead trout (O. mykiss), and fall chum (O. keta), odd -year pink (O. gorbuscho), and fall Chinook salmon (O. tshawytscha; WDFW 2018a). The City of Federal Way Hylebos Creek Fish Use and Habitat Technical Memorandum (HDR 2014) indicates that the source of the west fork of Hylebos Creek is the West Hylebos Wetlands Park, near South 348th Street. However, WDFW's Salmonscape and the DNR Forest Practices Application Mapping Tool (2018) indicate tributaries originating upstream flow through the West Hylebos Wetlands Park and connect to West Hylebos Creek. Surveys completed in support of the technical memorandum (HDR 2014) were limited to West Hylebos Wetlands Park and areas downstream. The surveys identified coho salmon (O. kisutch), cutthroat trout (O. clarkii), and sculpin (Cottoidea) in West Hylebos Creek. No fish use is identified in the study area. WDFW fish -passage mapping identifies a "dam, fishway" structure south of South 336th Street as a complete fish passage barrier. No natural barriers were identified downstream of the project area, including in West Hylebos Creek and the West Hylebos Wetlands Park (WDFW 2018b). The unnamed waterway in the study area is not included in Ecology's Water Quality Assessment data (i.e., is not a 303[d]-listed water). However, the 303(d) list identifies a section of the waterway, south of 336th Street, beyond the study area, as a Category 5, impaired water (polluted waters that require Wetland and Waterway Delineation Report South 336th Street Tightline and Water Quality Project 3-1 0238086.020.021 December 21, 2018 Landau Associates a water improvement project). Category 5, impaired waters are waters that exceed Washington's Aquatic Life Acute or Chronic criteria for lead, copper, and zinc and do not meet quality standards for ph. 3.1.3 Soil Soil data is helpful when determining the presence or absence of wetlands. Hydric soil must be present to classify an area as a wetland. The Soil Survey Geographic database (USDA, NRCS 2006) identifies two soil series within the study area (Appendix A, Figure A-3; complete soil profile descriptions are provided in Appendix B): The Everett (EwC) series consists of very deep, excessively drained soils formed in gravelly and sandy glacial outwash (USDA, NRCS 2014a). The Everett-Alderwood gravelly, sandy loams, 6 to 15 percent slopes (EwC), are classified as hydric on the National Hydric Soils List (USDA, NRCS 2014b) in depressions that contain components of the Norma, Tukwila, and Seattle soil series. The Norma, Tukwila, and Seattle soil series are not identified the project area. The Alderwood (AmB) series consists of moderately deep to densic contact, moderately well - drained soils formed in glacial drift and outwash over dense glaciomarine deposits (USDA, NRCS 2014c). The water table is at its highest from January through March. The Arents, Alderwood material, 0 to 6 percent slopes (AmB), is not classified as hydric. 3.1.4 Floodplain The Federal Emergency Management Agency's Geographic Information System Flood Map (Appendix A, Figure A-4) does not identify any 100-year floodplains within the study area. The nearest 100-year floodplain is located approximately 2 miles northwest of the study area, near Lake Dolloff. 3.1.5 Land Use Land use in the study area is a combination of road right-of-way and commercial (Figure 2). 3.1.6 Precipitation Data indicate that precipitation levels in the study area were normal for the 3-month period preceding the field investigation (Appendix C). 3.2 Field Investigation LAI Project Scientist Eve Henrichsen and Senior Associate Ecologist Steven Quarterman conducted field investigations on December 4, 2018. The weather was sunny with no precipitation and temperatures of40° F. Three sampling points were designated within the project area to characterize hydrology, vegetation, and soil conditions, and determine the presence/absence of wetlands. To identify and classify waterways within the project area, visual observations and measurements were made in accordance with the methodology described in Section 2.3. One waterway was identified in the project area. No Wetland and Waterway Delineation Report South 336th Street Tightline and Water Quality Project 3-2 0238086.020.021 December 21, 2018 Landau Associates wetlands were identified within the study area. A description of the unnamed tributary within the study area, including classifications and buffer requirements, is provided in Section 3.2.2. Selected site photographs are provided in Appendix E. 3.2.1 Uplands Uplands in the project area are characterized by sampling points DP-1 through DP-3 (see Appendices D and E). Dominant vegetation observed at these sampling points included black cottonwood (Populus balsamifera, facultative [FAC]), Himalayan blackberry (Rubus armeniacus, FAC), cutleaf blackberry (Rubus laciniatus, facultative upland [FACU]), common bedstraw (Golium aparine, FACU), creeping buttercup (Ranunculus repens, FAC), snowberry (Symphoricarpos albus, FACU), reed canary grass (Phalaris orundinacea, facultative wet [FACW]), and slough sedge (Carex obnupta, obligate [OBL]). Other vegetation in the project area includes salal (Gaultheria shallon, FACU), Pacific madrone (Arbutus menziesii, no indicator [NI]), Douglas fir (Pseudotsuga menziesii, FACU), and English ivy (Hedera helix, FACU). No evidence of hydrology was identified at the sampling points, and hydric soils were not observed. In general, soils were very dark, grayish -brown (10YR 3/2) loam or gravelly loam (Munsell Color 2012). 3.2.2 Waterway A An approximately 530-linear-foot segment of Waterway A was observed within the study area (Figure 3). City critical areas maps show Waterway A beginning just south of the project area. The OHWM was confirmed with the City topographic project survey map, and observed to coincide with the top of bank, as the channel is highly incised with steep banks. Waterway A has been channelized and confined between relatively steep banks in the project area (Appendix E). The bank of Waterway A is vegetated with Himalayan blackberry (R. armeniacus, FAC) and swordfern (Polystichum munitum). Riffles/pools and woody debris were observed in Waterway A; the stream substrate consists of gravel/cobbles and boulders. The south end of the stream segment has been armored with riprap. Measurements of 10-bankfull-width cross sections, taken across an approximately 530-linear-foot segment of the stream channel, revealed an average channel width of 6.1 ft (73.5 inches; Table 2). Cross-section measurements started 14 ft downstream of the culvert at the north end of the project area, and were spaced approximately 50 ft apart. Surface water was present at the time of the field investigation, and water depths ranged from 0.5 to 6 inches at the location of the cross-section measurement locations, and depths exceeded those recorded between some measurement locations. The waterway is reported to have intermittent flow (Wynkoop 2018), the majority of which derives from surface runoff from Pacific Highway. The slope of the waterway in the project area is approximately 3 percent. Wetland and Waterway Delineation Report 0238086.020.021 South 336th Street Tightline and Water Quality Project 3-3 December 21, 2018 Landau Associates No fish presence was documented in the segment of Waterway A within the study area; fish presence south of South 348th Street was modeled using data from the WDFW Salmon5cape website. However, downstream fish passage barriers and lack of upstream habitat (i.e., potential refuge during low- or no -flow periods) suggest an absence of resident fish in the study area. 3.2.2.1 Waterway Determination Waterway A is a presumed intermittent waterway. Physical stream characteristics (i.e., slope, width, and presence of habitat features) observed at the time of field survey could support fish use. While fish -passage barriers exist downstream of the project area, these blockages are human -made, and can be removed. Resident fish can exist upstream of blockages so the mere presence of a barrier is not proof offish absence (Forest Practices Board 2004). However, no fish are presumed to be present based on downstream fish passage barriers and lack of upstream habitat (i.e. potential refuge during times of low or no flows in the project area). Because Waterway A contains physical stream characteristics for presumptive fish use, although no fish are currently present due in part to downstream human -made passage barriers, it is classified as a Type F stream, and requires a standard buffer of 100 ft, per Chapter 19.145.270 of the FWRC. This stream type classification is subject to change if long-term, naturally occurring water quality parameters are identified that are incapable of supporting fish life, or based on further coordination with the Department of Natural Resources and other affected agencies. Wetland and Waterway Delineation Report 0238086.020.021 South 336th Street Tightline and Water Quality Project 3-4 December 21, 2018 Landau Associates 4.0 REGULATORY ASSESSMENT As indicated in the FWRC, and in accordance with the Growth Management Act, the City defines a stream as: a course or route, formed by nature, including those which have been modified by humans, and generally consisting of a channel with a bed, banks or sides throughout substantially all its length, along which surface waters naturally and normally flow in draining from higher to lower elevations. A stream need not contain water year-round. In a development, streams may run in culverts or may be channeled in a concrete, rock or other artificial conveyance system. This definition does not include irrigation ditches, stormwater facilities or other artificial watercourses unless they are used by resident or anadromous salmonid fish, or the feature was constructed to convey a natural stream which existed prior to construction of the watercourse. Those topographic features that resemble streams but have no defined channels shall be considered streams when hydrologic and hydraulic analyses done pursuant to a development proposal predict formation of a defined channel after development. For the purpose of defining the following categories of streams, normal rainfall is rainfall that is at or near the mean of the accumulated annual rainfall record, based upon the current water year for King County as recorded at the Seattle -Tacoma International Airport. Per this definition, Waterway A is a critical area feature, identified as a stream, and regulated as a fish and wildlife habitat conservation area by the City. Waterway A is also considered a state water. Any work that will use, divert, obstruct, or change the bed or flow of state waters, including streams and rivers, must comply with the terms of an HPA, issued by the WDFW. A WDFW HPA is administered under RCW 77.55 and rules set forth in WAC 220- 110. Based on guidance developed by the U.S. Environmental Protection Agency and the USACE (EPA, USACE 2007), agencies assert jurisdiction based on adjacency and significant nexus to traditional navigable waters. The agencies generally do not assert jurisdiction over swales or erosional features, or ditches excavated wholly in and draining only to uplands that do not carry a relatively permanent flow of water. To make its jurisdictional determination, the USACE evaluates indicators of the relative permanence of flow and significant nexus of the wetlands and waterways identified in this report. Waterway A is a jurisdictional "water of the U.S.," given its connection to Hylebos Creek, a tributary to Puget Sound (a listed navigable waterway). 4.1 Preliminary Impact Assessment The proposed modifications would require rerouting the segment of Waterway A within the project through a pipe, thereby maintaining hydraulic connection to downstream waters, but disassociating Wetland and Waterway Delineation Report 0238086.020.021 South 3361h Street Tightline and Water Quality Project 4-1 December 21, 2018 Landau Associates the waterway from the existing functional buffer area. The objective of the modifications is to improve the quality of stormwater runoff discharged to Waterway A. FWRC Chapter 19.145.120(1) identifies the following partial exemption for critical areas related to public facilities and other public improvements: Essential public facilities, public utilities and other public improvements. The director may permit the placement of an essential public facility, public utility or other public improvements in a critical area if no practical alternative with less impact on the critical area(s) exists. The specific location and extent of the intrusion into the critical area must constitute the minimum necessary encroachment to meet the requirements of the public facility or utility and not pose an unreasonable threat to the health, safety, or welfare on or off the subject property. The intrusion shall attempt to protect and mitigate impacts to the critical area function and values. The "public utility and other public improvements" shall not include improvements whose primary purpose is to benefit a private development, including without limitation interior roads or privately owned detention facilities installed within or during the construction of a residential subdivision, binding site plan, or other commercial development. The director may require supporting documentation to demonstrate compliance with partial exemptions. Requirements for fulfilling the partial exemption may be clarified with the City Community Development Department. Project impacts are subject to permitting through WDFW for HPA and the USACE for authorization under Section 404 of the Clean Water Act. Wetland and Waterway Delineation Report 0238086.020.021 South 336th Street Tightline and Water Quality Project 4-2 December 21, 2018 Landau Associates S.0 CONCLUSIONS Following its background -information review and field investigation, LAI has found that Waterway A is interpreted as a Type F stream, and is subject to regulation by the City, WDFW, and/or the USACE. The Type F designation is based on physical stream characteristics that provide fish habitat; however, no fish are anticipated to occur in the waterway, due to downstream fish -passage barriers and lack of upstream refuge during low- or no -flow periods. Stream type classification is subject to change if long- term, naturally occurring water quality parameters are identified that are incapable of supporting fish life, or based on further coordination with the Department of Natural Resources and other affected agencies. Pursuant to Chapter 19.145.270 of the FWRC, Waterway A is prescribed a standard buffer of 100 ft. Project impacts may be subject to partial exemption as detailed in Chapter 19.145.120(1) of the FWRC, and permitting through the WDFW (HPA) and USACE (authorization under Section 404 of the Clean Water Act). Wetland and Waterway Delineation Report 0238086.020.021 South 336th Street Tightline and Water Quality Project 5-1 December 21, 2018 Landau Associates 6.0 USE OF THIS REPORT The findings presented herein are based on Landau Associates, Inc.'s (LAI) understanding of the Federal Way Revised Code, the U.S. Army Corps of Engineers (USAGE) wetland delineation methodology, and the Washington State Department of Ecology's ordinary high water mark delineation methodology. Findings are based in part on interpretation of the vegetative, soil, and hydrologic conditions observed during LAI's December 4, 2018 field investigation. This wetland and waterway delineation report was prepared for the exclusive use of the City of Federal Way and applicable regulatory agencies. No other party is entitled to rely on the information, conclusions, and recommendations included in this document without the express written consent of LAI. Further, the reuse of information, conclusions, and recommendations provided herein for extensions of the project or for any other project, without review and authorization by LAI, shall be at the user's sole risk. Wetlands/waterways identified by LAI are considered preliminary until the USACE and/or local jurisdictional agencies validate the boundaries. Because wetlands/waterways are dynamic communities, their boundaries may change over time. Agencies typically recognize delineations for 5 years following an approved jurisdictional determination. In addition, changes in government code, regulations, and/or laws may occur. Wetland and Waterway Delineation Report South 336th Street Tightline and Water Quality Project 6-1 0238086.020.021 December 21, 2018 Landau Associates 7.0 REFERENCES Anderson, P., S. Meyer, P. Olson, and E. Stockdale. 2016, "Determining the Ordinary High Water Mark for Shoreline Management Act Compliance in Washington State." Publication No. 16-06-029. Washington State Department of Ecology. October Final Review. Available from: https://fortress.wa.gov/ecy/pubIications/documents/1606029.pdf. Cowardin, L.M., V. Carter, F.C. Golet, and E.T. LaRoe. 1979. Classification of Wetlands and Deepwater Habitats of the United States. Publication No. FWS/OBS-79-31. US Fish & Wildlife Service, US Department of the Interior. December. DNR. 2018. "Forest Practices Application Mapping Tool." Washington State Department of Natural Resources. Available from: https://www.dnr.wa.gov/programs-and-services/forest- practices/forest-practices-a pplication-review-system-fpars. DNR. 2018. "Forest Practices Water Typing." Washington State Department of Natural Resources. Available from: https://www.dnr.wa.gov/forest-practices-water-typing. Ecology. "Current Water Quality Assessment and 303(d) List." Washington State Department of Ecology. Accessed December 10, 2018. Available from: https://fortress.wa.gov/ecy/approvedwqa/ApprovedSearch.aspx. Ecology. 2016. Determining the Ordinary High Water Mark for Shoreline Management Act Compliance in Washington State. Publication No. 16-206-029. Washington State Department of Ecology. Federal Way. 2018. Federal Way Revised Code: A Codification of the General Ordinances of the City of Federal Way, Washington. Last updated November 6. FEMA. 1996. 100-year Floodplain Map: South 336th Street Tightline, Federal Way, Washington. Federal Emergency Management Agency. Forest Practices Board. 2004. "Section 2. Standard Methods for Identifying Bankfull Channel Features and Channel Migration Zones." Forest Practices Board Manual. Accessed December 3, 2018. Available from: http://www.dnr.wa.gov/BusinessPermits/Topics/ForestPracticesRuies/Pages/fp_board_manual.as px. Forest Practices Board. 2002. "Section 13. Guidelines for Determining Fish Use for the Purpose of Typing Waters." Forest Practices Board Manual. Available from: https://www.dnr.wa.gov/publications/fp_board_manual_sectionl3.pdf?r6wa4f4. HDR. 2014. Technical Memorandum: City of Federal Way Hylebos Creek Fish Use and Habitat. HDR Engineering, Inc. December. Munsell Color. 2012. Munsell Soil -Color Charts: With Genuine Munsell Color Chips. Munsell Color. Wetland and Waterway Delineation Report 0238086.020.021 South 336th Street Tightline and Water Quality Project 7-1 December 21, 2018 Landau Associates USACE. 2010. Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Western Mountains, Valleys, and Coast Region. Technical Report ERDC/EL TR-10-3. U.S. Army Corps of Engineers. USACE. 1987. Corps of Engineers Wetland Delineation Manual. Technical Report Y-87-1. U.S. Army Corps of Engineers. USDA NRCS. 2018a. "Hydric Soils." U.S. Department of Agriculture Natural Resources Conservation Service. Available from: https://www.nres.usda.gov/wps/portal/nres/main/soils/use/hydric/. USDA NRCS. 2018b. "Retrieving Climate Data and Summary Reports from AgACIS." U.S. Department of Agriculture Natural Resources Conservation Service. Available from: https://www.wcc.nrcs.usda.gov/climate/navigate_wets.html. USDA NRCS. 2014a. "Official Soil Series Descriptions (OSDs)." U.S. Department of Agriculture Natural Resources Conservation Service. Available from: https://soilseries.sc.egov.usda.gov/osdname.aspx. USDA NRCS. 2014b. "National List of Hydric Soils." U.S. Department of Agriculture Natural Resources Conservation Service. Available from: http://www. n res. usd a.gov/wps/portal/n res/main/so i Is/use/hyd ric/. USDA NRCS. 2014c. "Web Soil Survey." U.S. Department of Agriculture Natural Resources Conservation Service. Available from: http:Hwebsoilsurvey.sc.egov.usda.gov/App/HomePage.htm. USDA NRCS. 2006. Soils Map: South 3361h Street, Federal Way, Washington. U.S. Department of Agriculture Natural Resources Conservation Service. USFWS. 2015. National Wetlands Inventory Map: South 336th Street, Federal Way, Washington. U.S. Fish and Wildlife Service. USGS. 2013. Topographic Map: South 3361h Street, Federal Way, Washington. U.S. Geological Survey. WDFW. 2018a. "Salmon5cape." Washington Department of Fish & Wildlife. Available from: http://apps.wdfw.wa.gov/salmonscape/. WDFW. 2018b. "Washington State Fish Passage Map Application." Washington Department of Fish & Wildlife. Available from: https:Hwdfw.wa.gov/conservation/habitat/fish_passage/data_maps. html. Wynkoop, J. 2018. Personal Communication Regarding South 336th Street Tightline Project. From Jennifer Wynkoop, Landau Associates, Inc., to Kent Smith, City of Federal Way Department of Public Works. October 29. Wetland and Waterway Delineation Report 0238086.020.021 South 336th Street Tightline and Water Quality Project 7-2 December 21, 2018 Panther Lake Park era[ Way The Commons at Federal Way Celebration Park Project Location I! L ['6 L V� ==S=34aTWSI yCreek Z� 3 [99 c h a nte�i Park �1 ❑ 0.5 1 N Miles Data Source: Esri 2012 South 336th St Tightline LANDAU and Water Quality Project ASSOCIATES Federal Way, Washington Lake Park Q Lakeland South Seattle Spokane a Federal Way a[cma ]lympia Washington Vicinity M a p Figure 1 N a L F m 1i S 336Th St Legend Q Project Area EM Study Area Data Source: Esri World ImageryL South 336th St Tightline LANDAU and Water Quality Project ASSOCIATES Federal Way, Washington S 333Rd St Note 1. Black and white reproduction of this color original may reduce its effectiveness and lead to incorrect interpretation. 0 150 300 Scale in Feet Figure Study Area Map 2 i _ J \ i Culvert r I r r i r r � r r r r r tit r r ` r DP-1 r I r r I DP-3 I f r DP-2 I � l Culvert f I Ap S 336Th St Cssj S 333Rd St Legend Notes Q Culvert — Waterway A 1. Standard buffers shown. 0 150 300 2.0HWM boundary derived from project • Data Plot L — j Waterway Buffer survey and confirmed in the field. Q Project Area 3. Black and white reproduction of this colt Scale in Feet original may reduce its effectiveness and Q Study Area lead to incorrect interpretation. Data Source: Esri World Imagery. South 336th St Tightline Figure LANDAU and Water Quality Project Waterway Location Map 3 ASSOCIATES Federal Way, Washington o c„ 3° cr g� m y w F n o f u m w ««5 01 E a ` 12 :E �c u • n - a �5> oom�« - "3 3 N .E�„.Ni E« .E3Zvc 9 o t « `a r o. « w'�90 m ua _a v N Q 3 ry u° om yy off ._ t m 3L Tf >r ° nN- v c cE�•N °«- `C w•Evo n a «o v 3 nw u mLL 3 �« m�. vo E ,o,«s �o c C c A o„ t E r a 3 v o c 2 `o d E u_ m o ` c v o c°- _ v ° r r " a u- N ry -a v o e. T v v v 3 i °u c '° cmo v=„a 9 m Z zo-`«gym N o �_ a vGmEvo" _ o v -'9�=`mom E E N Q o. „ C v „ o = m v c 3 v �. C' „ p1 ° ., E w o- m o- „ o Y„ o v o o m= N c ? c v x - `o a ml So ` °3ul.. c u v iv E A n� au ° «' - aw =`o ,`o_v - E -„o a N o -W.m c rr aY m «o. c m a 6u m= E 0 m - = o `o_ Q o o N v n o _ m - c 2 v 1 m ry o o« c- A m o r« a m v o a n n c > e o o ry v m m E o E 3 a oa°«rmi x'�°, fvm s vas -I E a v O„ o =m E' n �•° o o` m C m o=o > E v v' Z ° W 01 o« °u c Jq 3 . c o -oE c m- v n „ a r m a ?mw ono Z E 3 „ 0 w m m o E o - d v o m m E c c C o„ ; o w 0 U w o E 2 v` g o m d a r o d° 9` y° u a o - °° _o a. ocl v _ 15 v z o L q E o m a o t o N m m °o > «O °1 ° n o a c °c a t o E o o o> a w N c° u y v a d o E v u c z o o uaav° E^m av Q �LL x Nio u 4=Nu�L o m i v so o •2 o m o c « m .2 3 'a 0 4-1 Amc n 01 °a T o. c Y' o W o c cm "• a .cm, mco ° E � 'o °o c v O „ v� e E ? • j« _ o 3 3 d m o o� « C m Z` u „°> > a •. v 3^ a 5 c C o oE. r o a E3 ood m�1 ° - a iea r - ' ''^Oc - e 3 �c - ron c n .v, 3 a° `for Z oo=o c c. o N `v w o eb >~ m o a `• eav u�a E ��; > a ry LLry c� a N �mF3. 3 co nm u= Sm n v E I 1 E a v v a on 9a+ LL o _ `m `m .... LLY E o 2 o` N vo E u o o w« o - a" E a« v a min 3 E m Z a m o u a m r m v cm E v _ - _ a .m 3. m m E •N c i Z E o - c C `I . • . . o i 3 s 3 v I v 1 m c 'oa = " E c 3 e • o o o o o a w o o w e 1 a n a 3 v r o o °'o omi:oi ` m c° a u° a m o x3 3 «o .. »rr� v _ y . co' QQ o Table 2 Page 1 of 1 Bankfull Width Measurements King County Parcel Nos. 1721049026, 1721049047, and 7681900020 Federal Way, Washington Bankfull Cross Section antull WidthWater (inches) Depih (inches) T1 80 3 T2 93 6 T3 73 2 T4 72 0.5 T5 50 0.5 T6 58 2 T7 65 1.5 T8 79 3 T9 90 5 T10 75 2 Average 73.5 2.55 Notes: Cross sections spaced approximately 50 feet along stream segment, beginning 14 feet from culvert at north end of project area. 12/01/15 \\edmdataol\projects\238\086.020\WIP\CAR\Figures and Tables\Tb2_bankfull measurements.xlsx Landau Associates APPENDIX A Background Information Review Figures CENTER. 0 ■e • -Ilk 04 MOW - PARK ;: ■ .: -: now ■ , '� • ' • ■ i■ w 1�. ■ r' M N z Wow _3M` Legend Note 1. Black and white reproduction of this color Q Project Area original may reduce its effectiveness and Q Study Area lead to incorrect interpretation. 0 500 1,000 Scale in Feet Data Source: National Geographic Societ , i-cubed. South 336th St Tightline Figure LANDAU and Water Quality Project USGS Topographic Map /� _ 1 ASSOCIATES Federal Way, Washington /� PEMF S 333Rd St y� i A N ti 3 a 00 x 5 336'rh St _ r I _ i ,99� Pss/EnnC PFUC Legend Note Q Project Area P1. Black and white reproduction of this color EMF -Freshwater Emergent Wetland original may reduce its effectiveness and Study Area PFOC, PSS/EMC - Freshwater Forested/Shrub Wetland lead to incorrect interpretation. 0 250 500 Data Source: uSF W; Esri World Irnagerv. Scale in Feet South 336th St Tightline U.S. Fish and Wildlife Figure LANDAU and Water Quality Project ASSOCIATES Federal Way, Washington National Wetlands Inventory Map A-2 11 a Legend Q Project Area Q Study Area 5 AmB - Arents, Alderwood Material, 0-6%Slopes EwC - Everett-Alderwood Gravelly Sandy Loams, 0-6%Slopes 5 333Rd St AmB, Note 1. Black and white reproduction of this color original may reduce its effectiveness and lead to incorrect interpretation. 0 150 300 Scale in Feet Data Source: USDANRCS; Esri World Ima e Fan 336th St Tightline Figure LANDAU ter Quality Project Soils Map /� _3 ASSOCIATES Way, Washington /� 509.: t'. • � . y� _ .. : + 99� .161 , Legend Note Q Project Area 100-Year Floodplain 1. Black and white reproduction ofthis color G Study Area original may reduce its effectiveness and lead to incorrect interpretation. 0 3,000 6,000 Data Source-- FEMA; Esri World Ima ery. Scale in Feet South 336th St Tightline Figure LANDAU and Water Quality Project 100-Year Floodplain Map A _ /I A �F ASSOCIATES Federal Way, Washington APPENDIX B Soil Profile Reports 12/11 /2018 Official Series Description - ALDERWOOD Series LOCATION ALDERWOOD WA Established Series Rev. AD/CRF/EED 10/2018 ALDERWOOD SERIES Landscape --glacial drift plains Landform--glacially modified hills and ridges Slope--0 to 65 percent Parent material-- glacial drift and outwash over dense glaciomarine deposits Mean annual precipitation --about 1000 mm Mean annual temperature --about 10 degrees C Depth class --moderately deep to densic contact Drainage class --moderately well drained Soil moisture regime--xeric Soil temperature regime--mesic Soil moisture subclass--aquic TAXONOMIC CLASS: Loamy -skeletal, isotic, mesic Aquic Dystroxerepts TYPICAL PEDON: Alderwood gravelly sandy loam, forested A--0 to 18 cm; gravelly sandy loam, brown (IOYR 5/3) dry, very dark grayish brown (IOYR 3/2) moist; moderate fine granular structure; slightly hard, very friable, slightly sticky and slightly plastic; many fine roots; few fine irregular pores; 20 percent gravel; moderately acid (pH 5.8); abrupt smooth boundary Bw1--18 to 53 cm; very gravelly sandy loam, yellowish brown (IOYR 5/4) dry, dark yellowish brown (IOYR 4/4) moist; weak medium subangular blocky structure; slightly hard, very friable, nonsticky and nonplastic; many fine roots; many fine tubular and irregular pores; 35 percent gravel; moderately acid (pH 5.8); gradual smooth boundary; Bw2--53 to 75 cm; very gravelly sandy loam, pale brown (IOYR 6/3) dry, brown (IOYR 4/3) moist; weak medium subangular blocky structure; slightly hard, very friable, nonsticky and nonplastic; common fine roots; few very fine tubular pores; 40 percent gravel; moderately acid (pH 5.8); clear wavy boundary Bg--75 to 89 cm; very gravelly sandy loam, light yellowish brown (2.5Y 6/4) dry, olive brown (2.5Y 4/4) moist, and light brownish gray (2.5Y 6/2) dry, dark grayish brown (2.5Y 4/2) moist; massive; slightly hard, very friable, nonsticky and nonplastic; few fine roots; common fine tubular and interstitial pores; reddish yellow (7.5YR 6/6) dry, strong brown (7.5YR 516) moist, masses of oxidized iron around rock fragments; 45 percent gravel; moderately acid (pH 6.0); abrupt wavy boundary 2Cd1--89 to 109 cm; very gravelly sandy loam, light brownish gray (2.5Y 6/2) dry, dark grayish brown (2.5Y 4/2) moist; massive; extremely hard; extremely firm, nonsticky and nonplastic; few fine roots; few fine tubular pores; dark yellowish brown (1 OYR 4/4) moist, olive (5Y 4/4) moist, yellowish red (5YR 4/6) and strong brown (7.5YR 5/6) moist iron -manganese masses and masses of oxidized iron in cracks; 40 percent gravel; moderately acid (pH 6.0); abrupt irregular boundary 2Cd2--109 to 150 cm; dense glacial till that breaks to very gravelly sandy loam, light gray (2.5Y 7/2) dry hftps://soilsedes.sc.egov.usda.gov/OSD—Docs/A/ALDERWOOD.htmi 1/4 12/11 /2018 Official Series Description - ALDERWOOD Series grayish brown (2.5Y 5/2) moist; massive; extremely hard, extremely firm, nonsticky and nonplastic; 40 percent gravel; moderately acid (pH 6.0) TYPE LOCATION: Snohomish County, Washington; about 8 km east of Lynnwood on Maltby road; 61 m south and 122 m east of the center of sec. 28, T. 27 N., R. 5 E., Willamette Meridian; Bothell, Washington, U.S. Geological Survey quadrangle; latitude: 47.798000, longitude: 122.176000 degrees west, WGS84 (coordinates estimated from PLSS details) RANGE IN CHARACTERISTICS: *Mean annual soil temperature--10 to 12 degrees C *Soil moisture control section --dry 60 to 75 consecutive days following the summer solstice *Depth to densic contact--50 to 100 cm *Depth to redoximorphic features with chroma of 2 or less-45 to 75 cm *Reaction (pH)--5.1 to 6.5 Particle -size control section (weighted average): *Clay content: 5 to 15 percent *Rock fragments: 35 to 65 percent A horizon Hue--1 OYR or 7.5YR Value--2 or 3 moist, 3 to 5 dry Chroma--2 to 4, moist or dry Total fragments--15 to 65 percent Gravel content--15 to 65 percent Cobble content--0 to 5 percent Stone content--0 to 5 percent Thickness--5 to 20 cm Bw horizon Hue--IOYR or 7.5YR Value--2 to 6, dry or moist Chroma--2 to 6, dry or moist Fine earth texture --sandy loam, coarse sandy loam, or loam Total fragments--15 to 65 percent Gravel content--15 to 65 percent Cobble content--0 to 15 percent Stone content--0 to 5 percent Thickness--20 to 75 cm Bg horizon Hue--IOYR or 2.5Y Value--5 to 7 dry Chroma--2 to 4, moist or dry Fine earth texture --sandy loam, coarse sandy loam, or loam Redox concentrations --beginning within 75 cm of the surface Total fragments--35 to 85 percent Gravel content--35 to 85 percent Cobble content--0 to 25 percent Stone content--0 to 5 percent Thickness--5 to 50 cm 2Cd horizon Hues-- IOYR or 2.5Y https://soilseries.sc.egov.usda.gov/OSD_Does/A/ALDERWOOD.htmi 2/4 12/11 /2018 Official Series Description - ALDERWOOD Series Value-4 to 8 dry Chroma--1 to 3, moist or dry Fine earth texture --sandy loam, fine sandy loam, coarse sandy loam, or loamy sand Total fragments--l5 to 45 percent Gravel content--15 to 45 percent Cobble content--0 to 10 percent Stone content--0 to 5 percent An E horizon less than 5 cm thick is sometimes present COMPETING SERIES: Whidbey ---dry 75 to 90 consecutive days following the summer solstice; less than 15 percent coarse fragments in the surface horizon GEOGRAPHIC SETTING: Elevation--0 to 250 m Mean annual precipitation-410 to 1500 mm Mean annual air temperature--9 to 11 C Frost free period --I 0 to 240 GEOGRAPHICALLY ASSOCIATED SOILS: Everett, Indianola --lack a densic layer, no aquic conditions within 30 cm of the soil surface, on adjacent glacial outwash or glacial drift plains McChord--depth to densic contact is between 100 and 150 cm from the soil surface, on similar landforms Mckenna--on adjacent hillslopes and glacial drift plains DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: *Drainage class --moderately well drained *Depth to perched seasonal water table--30 to 90 cm at times in December through April *Flooding --none *Ponding--none *Saturated hydraulic conductivity (Ksat)--high saturated hydraulic conductivity above the densic contact and low saturated hydraulic conductivity in the densic material USE AND VEGETATION: *Use --timber production, crop production, wildlife habitat, watershed *Potential natural vegetation-- Douglas -fir, western hemlock, western redcedar, red alder with an understory of salal, Oregon -grape, western brackenfern, western swordfern, Pacific rhododendron, red huckleberry, evergreen huckleberry, and orange honeysuckle DISTRIBUTION AND EXTENT: Western Washington; MLRA 2. The series is extensive SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Portland, Oregon SERIES ESTABLISHED: Snohomish County, Washington 1936 REMARKS: Diagnostic horizons and features recognized in this soil: *Particle -size control section--25 to 89 cm *Ochric epipedon *Cambic horizon --from 0 to 89 cm *Episaturation--zone from 75 to 89 cm *Aquic conditions --zone from 75 to 89 cm *Depth to densic contact--89 cm *Depth to lithologic discontinuity--89 cm https://soilsedes.se.egov.usda.gov/OSD_Docs/A/ALDERWOOD.htmi 3/4 12/11 /2018 Official Series Description - ALDERWOOD Series *Redoximorphic depletions with chroma of 2 or less --zone from 75 cm to 89 cm 06/2018--Changed from previous 2011 classification of loamy -skeletal, isotic, mesic, Vitrandic Dystroxerepts. Existing laboratory data for this series and other geographically associated soils does not reflect the presence of adequate quantities of volcanic glass to support the Vitrandic subgroup. This OSD was edited according to SSR01 Technical Note --Content and Format of Official Series Descriptions (revised 11/2017). ADDITIONAL DATA: Partial data available for this series. Sample # S71 WA033002, 71 WA033003, SO4WA061002, and S09WA053098 National Cooperative Soil Survey U.S.A. https://soilseries.sc.egov.usda.gov/OSD_Does/A/ALDERWOOD.html 4/4 12/11 /2018 Official Series Description - EVERETT Series LOCATION EVERETT WA Established Series Rev. DES/CAB/CRF/EED 10/2018 EVERETT SERIES Landscape --glacial drift plains Landform--outwash terraces and escarpments, kames, moraines, eskers Slope--0 to 65 percent Parent material --glacial outwash Mean annual precipitation --about 1050 mm Mean annual temperature --about 10 degrees C Depth class --very deep Drainage class --somewhat excessively drained Soil moisture regime--xeric Soil temperature regime--mesic Soil moisture subclass--typic TAXONOMIC CLASS: Sandy -skeletal, isotic, mesic Humic Dystroxerepts TYPICAL PEDON: Everett very gravelly sandy loam on a forested north -facing slope of 3 percent at 150 meters elevation. When described on October 21, 2009, the soil was slightly moist throughout. Oi--O to 3 cm; slightly decomposed plant material consisting of leaves, needles, and twigs A--3 to 8 cm; very gravelly sandy loam, brown (7.5YR 4/3) dry, very dark brown (7.5YR 2.5/2) moist; weak fine subangular blocky structure; soft, very friable, nonsticky and nonplastic; many very fine and fine roots; common medium and fine tubular pores; 35 percent gravel, 10 percent cobbles; strongly acid (pH 5.3); clear smooth boundary Bw--8 to 60 cm; very gravelly sandy loam, brown (7.5YR 5/4) dry, dark brown (7.5YR 3/4) moist; weak fine subangular blocky structure; soft, very friable, nonsticky and nonplastic; many very fine to medium roots; common fine tubular pores; 35 percent gravel, 10 percent cobbles; strongly acid (pH 5.5); clear wavy boundary C1--60 to 90 cm; very gravelly loamy sand, yellowish brown (1 OYR 5/4) dry, dark yellowish brown (10YR 4/4) moist; single grain; loose, nonsticky and nonplastic; common medium and few coarse roots; many very fine interstitial pores; 40 percent gravel, 10 percent cobbles; strongly acid (pH 5.5); gradual wavy boundary C2--90 to 150 cm; extremely cobbly sand, yellowish brown (10YR 5/4) dry, dark yellowish brown (1 OYR 4/4) moist; single grain; loose, nonsticky and nonplastic; few coarse roots; many very fine interstitial pores; 40 percent gravel, 35 percent cobbles; moderately acid (pH 5.6) TYPE LOCATION: Thurston County, Washington; Joint Base Lewis-McChord; about 629m east and 566m south of NW corner of sec. 3, T. 17 N., R. 1 E., Willamette Meridian; Tenalquot Prairie, Washington, U.S. Geological Survey quadrangle; latitude: 46.99097 north, longitude: 122.66686 degrees west, WGS84 (coordinates estimated from PLSS details) RANGE IN CHARACTERISTICS: https://soilseries.sc.egov.usda.gov/OSD_Docs/E/EVERETT.htmi 1/3 12/11 /2018 Official Series Description - EVERETT Series *Mean annual soil temperature--9 to 12 degrees C *Soil Moisture control section --dry 60 to 75 days following the summer solstice *Reaction (pH)-- 4.5 to 6.0 *Base Saturation (by NH40Ac)--less than 60 percent in all horizons at a depth between 25 and 75 cm from the mineral soil surface Particle size control section (weighted average): * Clay content--2 to 10 percent *Rock fragments: *Total--35 to 85 percent A horizon Hue--1 OYR, 7.5YR, or 5YR Value--2 or 3 moist, 4 or 5 dry Chroma--1 to 3, moist or dry Fine -earth texture --sandy loam, fine sandy loam, sandy loam, or loam Total fragments--0 to 65 percent Gravel content--0 to 45 percent Cobble content--0 to 15 percent Stone content--0 to 5 percent Thickness--3 to 15 cm Bw horizon Hue--IOYR or 7.5YR Value--3 to 6, moist or dry Chroma--2 to 6, moist or dry Fine -earth texture --sandy loam, silt loam, coarse sand, loamy sand, or loamy coarse sand Total fragments--35 to 85 percent Gravel content--35 to 85 percent Cobble content--0 to 40 percent Stone content--0 to 5 percent Thickness--15 to 55 cm C horizon Hue--7.5YR to 5Y Value--3 or 6 moist, 4 to 6 dry Chroma--1 to 6, moist or dry Fine -earth texture --sand, loamy sand, loamy coarse sand, or coarse sandy loam Total fragments--35 to 85 percent Gravel content--35 to 85 percent Cobble content--0 to 40 percent Stone content--0 to 5 percent Thickness--15 to 50 cm COMPETING SERIES: There are no competing series GEOGRAPHIC SETTING: Elevation--10 to 280 m Mean annual precipitation--900 to 1800 mm Mean annual air temperature--10 C Frost free period--180 to 240 GEOGRAPHICALLY ASSOCIATED SOILS: Alderwood, Kapowsin--densic contact at a depth of 50 to 100 cm from the soil surface; on adjacent hills and https://soilseries.sc.egov.usda.gov/OSD—Docs/EIEVERETF.htmi F.htmi 2/3 12/11/2018 Official Series Description - EVERETT Series ridges Baldhill--textures of loamy very fine sand, very fine sand, or finer with less than 35 percent clay in the fine earth fraction of the particle size control section; on terminal moraines Indianola --less than 15 percent coarse fragments in the particle size control section; on adjacent hills, and terrace escarpments DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: *Drainage class --somewhat excessively drained *Flooding --none *Ponding--none *Saturated hydraulic conductivity (Ksat)--high in the A horizon and high to very high in the Bw and C horizons USE AND VEGETATION: *Use --livestock grazing, timber production, urban development *Potential natural vegetation-- bigleaf maple, red alder, Douglas -fir, western redcedar, western hemlock, salal, hairy brackenfern, red huckleberry, Nootka rose, oceanspray, Cascade Oregongrape, and orange honeysuckle DISTRIBUTION AND EXTENT: Northwest Washington; MLRA 2; large extent SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Portland, Oregon SERIES ESTABLISHED: 1910 Reconnaissance Survey of Eastern Puget Sound Basin, Washington REMARKS: Diagnostic horizons and features in this pedon *Particle -size control section --zone from 28 to 103 cm *Ochric epipedon *Cambic horizon --zone from 3 to 60 cm 2010--Changed from previous classification of sandy -skeletal, isotic, mesic Vitrandic Dystroxerepts. Existing laboratory data does not reflect the presence of adequate quantities of volcanic glass to support the Vitrandic subgroup. Humic subgroup criteria is met using the twelfth edition of Keys to Soil Taxonomy. 04/2018--The official series description was edited according to SSR01 Technical Note --Content and Format of Official Series Descriptions (revised 11/2017). ADDITIONAL DATA: Laboratory data is available for this series. National Soil Survey Laboratory S09WA067069, S09WA053124, S09WA-053-001 National Cooperative Soil Survey U.S.A. hftps://soilseries.sc.egov.usda.gov/OSD—Dor-s/E/EVERETr.htmi 3/3 APPENDIX C Precipitation Data WETS Table WETS Station: SEATTLE TACOMA INTL AP, WA Requested years: 1971 -2000 Month Avg Max Avg Min Avg Avg 30% 30 %chance Avg number Avg Temp Temp Mean Precip chance precip more days precip 0. Snowfall Temp precip less than 10 or more than Jan 45.8 35.9 40.9 5.13 3.58 6.10 12 2.4 Feb 49.5 37.2 43.3 4.18 2.73 5.02 10 1.3 Mar 53.2 39.1 46.2 3.75 2.77 4.40 11 0.6 Apr 58.2 42.1 50.1 2.59 1.71 3.11 7 0.1 May 64.3 47.2 55.7 1.77 1.16 2.13 6 0.0 Jun 69.5 51.7 60.6 1.49 0.96 1.79 4 0.0 Jul 75.2 55.3 65.3 0.79 0.43 0.97 3 0.0 Aug 75.5 55.7 65.6 1.02 0.38 1.24 3 0.0 Sep 70.1 51.9 61.0 1.63 0.69 1.90 5 0.0 Oct 59.7 45.7 52.7 3.19 1.96 3.86 8 0.1 Nov 50.5 39.9 45.2 5.90 4.10 7.02 13 1.1 Dec 45.4 35.9 40.7 5.62 3.94 6.68 12 1.9 Annual: 33.52 40.09 Average 59.7 44.8 52.3 - - - - - Total - - - 37.07 92 7.5 GROWING SEASON DATES Years with missing data: 24 deg = 28 deg = 32 deg = 0 0 0 Years with no occurrence: 24 deg = 28 deg = 32 deg = 8 2 0 Data years used: 24 deg = 28 deg = 32 deg = 30 30 30 Probability 24 F or 28 F or 32 F or higher higher higher 50 percent * 1 /20 to 2/7 to 12/ 3/9 to 12/30: 10: 306 11 /16: 344 days days 252 days 70 percent* 1 /2 to 1 / 1 /31 to 3/3 to 18: 381 12/17: 11 /22: days 320 days 264 days * Percent chance of the growing season occurring between the Beginning and Ending dates. STATS TABLE- total precipitation (inches) Yr Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Anni 1945 4.62 6.14 4.33 3.34 2.62 0.62 0.11 0.31 3. 2. 6. 6.31 40. 51 32 31 54 1946 5.29 5.83 3.71 2.46 0.41 3.90 0.56 0.33 2. 3. 5. 6.47 40. 58 22 53 29 1947 4.20 4.02 2.40 2.17 0.35 2.15 1.04 0.49 1. 8. 3. 6.02 37. 84 95 62 25 1948 4.49 5.25 3.68 3.75 4.76 2.09 1.53 1.87 3. 2. 6. 6.13 45. 85 33 06 79 1949 0.77 5.89 3.54 1.18 1.30 0.93 1.04 0.45 1. 3. 6. 5.30 32. 43 85 78 46 1950 8.91 5.74 8.40 2.92 0.78 0.59 1.00 2.17 2. 7. 7. 7.14 55. 30 21 98 14 1951 6.80 8.76 3.76 0.65 1.61 0.13 0.31 1.02 2. 5. 5. 3.92 40. 03 87 44 30 1952 4.89 2.46 3.52 2.03 0.99 1.04 0.41 0.70 0. 1. 1. 5.02 23. 32 29 11 78 1953 12.92 3.70 3.72 2.10 2.51 1.85 0.66 1.11 3. 4. 7. 5.92 49. 28 43 22 42 1954 8.36 4.38 2.07 2.64 1.89 2.44 1.46 1.57 1. 68 1. 91 7. 67 5.20 41. 27 1955 3.35 4.30 3.25 3.64 1.95 1.27 2.10 0.17 1. 52 6. 60 S. 96 9.50 46. 61 1956 8.67 2.17 4.95 0.33 0.83 2.47 0.33 0.76 2. 42 6. 71 1. 59 5.62 36. 85 1957 2.41 5.57 6.26 2.23 1.17 1.18 1.10 1.64 0. 76 3. 79 3. 00 5.52 34. 63 1958 8.72 5.36 2.26 3.51 0.94 0.90 T 0.31 1. 42 3. 99 B. 07 7.15 42. 63 1959 7.98 3.64 4.12 3.59 1.60 1.82 0.93 0.60 4. 60 2. 67 8. 14 6.83 46. 52 1960 5.48 4.01 4.08 2.88 3.04 0.70 T 1.92 1. 17 4. 22 8. 03 3.75 39. 28 1961 7.71 9.11 4.46 2.35 3.07 0.54 0.75 0.82 0. 46 3. 27 4. 67 5.32 42. 53 1962 2.43 2.29 2.86 2.03 1.82 0.68 0.69 1.96 2. 31 4. 16 9. 34 5.22 35. 79 1963 2.25 4.36 3.43 3.06 0.90 1.68 1.18 0.73 0. 59 5. 06 9. 69 5.79 38. 72 1964 9.76 1.66 2.96 1.56 0.91 3.82 0.99 1.23 2. 27 1. 00 9. 65 5.53 41. 34 1965 5.27 3.88 0.57 3.73 1.63 0.59 0.38 2.18 0. 49 2. 76 4. 98 7.10 33. 56 1966 5.43 2.31 4.38 1.99 1.35 1.15 1.35 0.42 1. 77 2. 92 6. 85 8.31 38. 23 1967 9.32 2.72 3.71 2.50 0.38 2.04 0.01 0.02 0. 94 6. 66 2. 56 4.72 35. 58 1968 6.90 6.08 5.08 1.33 1.67 3.02 0.83 4.58 1. 93 4. 32 5. 86 8.55 50. 15 1969 5.71 3.16 2.20 3.45 2.93 0.91 0.27 0.45 5. 57 1. 19 2. 21 5.68 33. 73 1970 8.22 2.26 3.16 3.31 1.17 0.43 0.48 0.32 2. 23 2. 52 5. 03 8.28 37. 41 1971 5.32 4.36 7.12 2.39 1.43 2.28 0.68 0.57 3. 51 3. 57 5. 31 6.67 43. 21 1972 7.24 8.11 6.74 4.12 0.69 1.81 1.34 1.13 4. 10 0. 72 3. 38 8.98 48. 36 1973 4.29 1.89 1.62 1.35 1.60 2.50 0.08 0.27 1. 81 3. 31 7. 99 8.33 35. 04 1974 7.78 4.01 5.84 2.39 1.37 1.25 1.51 0.01 0. 21 1. 99 5. 06 6.45 37. 87 1975 6.01 5.80 2.87 2.49 1.13 0.84 0.27 4.59 T 7. 75 5. 07 7.66 44. 48 1976 5.55 4.74 2.71 1.67 1.61 0.63 1.17 2.71 1. 25 2. 06 0. 74 1.86 26. 70 1977 1.77 1.58 3.80 0.55 3.70 0.54 0.42 3.59 2. 55 2. 60 5. 27 6.47 32. 84 1978 4.30 3.59 2.43 4.19 1.79 0.75 1.40 1.19 5. 95 0. 98 6. 05 1.37 33. 99 1979 2.25 5.32 1.55 0.81 0.88 0.46 0.73 1.02 2. 07 3. 38 1. 94 11. 85 32. 26 1980 4.09 5.04 2.10 3.23 0.97 1.77 0.46 0.64 1. 43 1. 32 7. 16 7.39 35. 60 1981 2.42 4.45 2.23 1.58 1.33 2.31 1.38 0.25 3. 42 6. 40 4. 07 5.56 35. 40 1982 5.35 7.57 3.73 2.07 0.63 1.03 0.59 0.62 1. 49 4. 07 5. 31 6.86 39. 32 1983 7.07 4.57 3.81 1.06 2.10 1.85 2.39 1.90 1. 85 1. 34 7. 97 5.02 40. 93 1984 3.62 3.91 3.91 2.87 3.38 2.81 0.17 0.13 1. 01 2. 14 B. 09 4.95 36. 99 1985 0.58 2.63 2.56 1.30 0.85 2.80 0.10 0.55 1. 98 5. 74 4. 26 1.78 25. 13 1986 8.54 4.41 2.67 1.38 1.71 0.68 1.10 0.10 1. 89 4. 21 7. 98 3.67 38. 34 1987 5.98 2.05 5.53 2.61 2.38 0.16 0.39 0.29 0. 0. 3. 6.11 29. 91 31 21 93 1988 4.07 0.71 3.75 3.20 3.01 1.56 0.50 0.28 1. 2. B. 348 32. 75 24 43 98 1989 2.78 3.43 5.79 2.80 2.78 1.14 0.64 0.89 0. 2. 6. 4.79 34. 54 98 13 69 1990 9.41 3.72 2.58 2.54 1.98 3.05 0.58 0.71 0. 5. 10. 3.63 44. 05 79 71 75 1991 4.46 4.69 4.66 6.53 1.39 1.29 0.28 2.17 T 1. 5. 3.31 35. 31 33 42 1992 7.82 3.09 1.68 4.12 0.12 1.14 0.89 0.66 1. 2. 5. 4.09 32. 15 45 57 78 1993 4.09 0.35 4.80 4.54 2.86 2.48 1.27 0.16 0. 1. 2. 4.48 28. 03 54 20 80 1994 2.51 4.47 3.17 2.27 1.43 1.25 0.28 0.30 1. 3. 5. 8.15 34. 69 51 79 82 1995 4.48 4.97 4.07 2.05 0.81 1.46 1.34 1.81 0. 3. 10. 6.37 42. 91 93 40 60 1996 7.34 8.35 2.06 5.37 2.07 0.59 0.77 1.32 1. 5. 5. 10. 50. 85 54 23 18 67 1997 7.02 1.99 8.15 4.32 1.87 1.64 1.20 1.27 3. 5. 3. 2.63 43. 41 83 93 26 1998 7.15 3.31 3.96 0.99 1.98 MIA 1 0.41 0.35 0. 3. 11. 8.98 44. 72 48 62 06 1999 6.84 6.95 3.66 1.49 2.12 1.86 1.18 0.92 0. 2. 9. 5.06 42. 17 26 60 11 2000 3.77 5.25 2.82 1.48 3.27 1.61 0.23 0.33 1. 3. 3. 2.51 28. 12 00 27 66 2001 2.70 2.07 2.73 3.16 1.39 3.05 1.03 2.32 0. 3. 9. 5.89 37. 83 13 26 56 2002 5.98 4.17 2.82 4.29 1.11 1.73 0.64 0.04 0. 0. 3. 5.98 31. 42 67 51 36 2003 8.39 1.76 6.34 2.74 1.16 0.51 0.06 0.32 0. B. 6. 3.88 41. 89 96 77 78 2004 6.36 2.44 2.14 0.65 2.51 0.71 0.16 3.00 2. 2. 3. 4.37 31, 80 80 16 10 2005 4.44 1.20 3.71 3.68 3.32 1.63 1.03 0.29 MO. 3. 5. 6.85 35. 75 02 52 44 2006 11.65 2.55 2.18 2.73 1.65 1.67 0.06 0.02 1. 1. 15. T30 48. 43 55 63 42 2007 6.22 3.38 4.42 0.69 1.46 1.34 1.44 0.73 3. 3. 3. 9.08 38. 16 32 71 95 2008 4.26 1.47 3.65 1.90 0.89 1.64 0.48 2.87 0. 2. 6. 4.10 30. 78 17 52 73 2009 5.40 1.51 4.16 3.36 3.61 0.18 0.06 1.16 1. 5. 8. 2.75 38. 75 54 96 44 2010 6.17 3.52 3.76 3.49 2.83 2.49 0.31 0.64 4. 5. 5. 8.69 46. 80 24 05 99 2011 4.99 3.05 6.29 4.47 3.20 1.42 0.70 0.13 1. 3. 5. 2.24 36. 29 45 16 39 2012 6.83 3.63 7.20 2.68 2.05 2.96 1.04 T 0. 6. 8. 6.85 48. 03 71 28 26 2013 4.16 1.58 2.74 5.89 2.38 1.30 T 1.35 6. 1. 3. 1.66 32. 17 54 79 56 2014 3.70 6.11 9.44 4.18 3.15 0.73 0.77 1.81 2. 6. 4. 4.79 48. 23 75 84 50 2015 3.66 5.27 4.47 2.03 0.58 0.23 0.09 3.28 0. 4. 8. 11. 44. 83 81 37 21 83 2016 7.45 5.97 5.52 1.19 0.94 1.77 0.72 0.17 1. 10. 6. 3.87 45. 05 05 48 18 2017 4.22 8.85 7.32 4.21 2.28 1.52 T 0.02 0. 4. 8. 5.43 47. 59 80 63 87 2018 8.12 2.16 2.44 5.69 0.12 0.63 0.05 0.20 1. 3. 5. MO. 30. 04 78 42 81 46 Notes: Data missing in any month have an V' flag. A "T" indicates a trace of precipitation. Data missing for all days in a month or year is blank. NRCS method - Rainfall Documentation Worksheet Hydrology Tools for Wetland Determination NRCS Engineering Field Handbook Chapter 19 Date 12/11/2018 Landowner/Project)49026, 1721049047, 768190020 Weather Station Seattle Tacoma Intl Ap State Washington County Photo/obs Date shaded cells are locked or calculated 1st Prior Month* 2nd Prior Month* 3rd Prior Month* Kingi Growing Season 2/6 to 12/9 12/4/20181 Soil Name:tt-Alderwood gravelly sandy loam Long-term rainfall statistics (from WETS table or State Climatology Office) 30% 30% Condition Month Product of chance chance Dry, Wet, Condition Weight Previous 2 Month < > Precip Normal Value Value Columns November 4.10 7.02 5.42 N 2 3 6 October 1.96 3.86 3.78 N 2 2 4 September 0.69 1.90 1.04 N 21 1 2 `compared to photo/abservation date Sum 12 Note: if sum is 6-9 prior period has been drier Condition value: than normal Dry =1 10 - 14 prior period has been normal Normal =2 Wet =3 15 - 18 prior period has been wetter than normal Conclusions: prior period has been normal Creation date: 2016-07-22 APPENDIX D Wetland Determination Data Forms WETLAND DETERMINATION DATA FORM — Western Mountains, Valleys, and Coast Region Project Site: Spu(h 3361" Street TMuhHine City/County: Fedegal Wav11[ino Sampling Date: 12104.18 Applicant/Owner: Gib of Federal We State: Wa Sampling Point: DP-1 Investigator(s): S. Ouarlerman Section, Township, Range: S17. T21 N. R4E Landform (hillslope, terrace, etc.): terrace Local relief (concave, convex, none): none Slope (%): Subregion (LRR): LRRA Let: 47;18'4.57 N Long: 122:18.48 W Datum: Soil Map Unit Name: Evemit-Alderwood gravelly sandy [cams. 6 to 15 Percent slopes NWI classification: UPL Are climatic / hydrologic conditions on the site typical for this time of year? Yes ® No ❑ (If no, explain in Remarks.) Are Vegetation ❑, Soil ❑, or Hydrology ❑, significantly disturbed? Are "Normal Circumstances" present? Yes ® No ❑ Are Vegetation ❑, Soil ❑, or Hydrology ❑, naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc. iydrophytic Vegetation Present? Yes ® No ❑ iydric Soil Present? Yes ❑ No ® Is the Sampled Area Yes within a Wetland? [I No Netland Hydrology Present? Yes ❑ No remarks: YCVC IAr IVnl — use 50enliTic names OT Tree Stratum (Plot size: 30 ft) 1. Panufus balsarnifera 2. 3, 4. 50% = 20, 20% = 8 SAnlln(lyMhRPh Stratum (Plot size: 15 ft) 1. Rubus armeniacus 2. Rubus laciniatus 3. 4. 5. 50% = 7_5, 20% = 3 Herb Stratum (Plot size: 5 ft) 1.. Phalaris arundinacea 2. Ranuncultirs repan 3. 4. 5. 6, 7. 8. 9, 10. it. 50% = 25, 20% = 10 Woody Vine Stratum (Plot size: _) 1. 2. 50% _, 20%=_ % Bare Ground in Herb Stratum 50 Remarks: ,Absolute 3 Pv 40 40 10 Dominant Snecie yes = Total Cover yes Indicator Status FAC FAC Dominance Test Worksheet: Number of Dominant Species 4 That Are OBL, FACW, or FAC: Total Number of Dominant 5 Species Across All Strata: Percent of Dominant Species g0 That Are OBL, FACW, or FAC: (A) (B) (AIB) Prevalence Index worksheet: 5 yes FACU Total % Cover of: MuItic) ly by: — OBL species x1 = FACW species x2 = — FAC species x3 = 15 = Total Cover FACU species x4 = UPL species x5 = 20 ves FACW Column Totals: (A) (B) 30 yes FAC Prevalence Index = B/A = Hydrophytic Vegetation Indicators: — _ ❑ 1 — Rapid Test for Hydrophytic Vegetation ® 2 - Dominance Test is >50 % -- ❑ 3 - Prevalence Index is <3.01 ❑ 4 - Morphological Adaptations' (Provide supporting data in Remarks or on a separate sheet) — ❑ 5 - Wetland Non -Vascular Plants' — ❑ Problematic Hydrophytic Vegetation' (Explain) 50 = Total Cover r 'Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. Hydrophytic Vegetation Yes ® No El Total Cover Present? US Army Corps of Engineers Western Mountains, Valleys, and Coast — Version 2.0 Project Site: South 336° Street Somnllnn Point: OP-1 Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Type' Loc' Texture Remarks 0-18 10 YR 3/2 100 gravelly Refusal_al loam 'Type: C= Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 'Location: PL=Pore Lining, M=Matrix Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3: ❑ Histosol (Al) ❑ Sandy Redox (S5) ❑ 2 cm Muck (A10) ❑ Histic Epipedon (A2) ❑ Stripped Matrix (S6) ❑ Red Parent Material (TF2) ❑ Black Histic (A3) ❑ Loamy Mucky Mineral (F1) (except MLRA 1) ❑ Very Shallow Dark Surface (TF12) ❑ Hydrogen Sulfide (A4) ❑ Loamy Gleyed Matrix (F2) ❑ Other (Explain in Remarks) ❑ Depleted Below Dark Surface (Al 1) ❑ Depleted Matrix (F3) ❑ Thick Dark Surface (Al2) ❑ Redox Dark Surface (F6) ❑ Sandy Mucky Mineral (S1) ❑ Depleted Dark Surface (F7) 3Indicators ofhydrophytic vegetation and wetland hydrology must be present, ❑ Sandy Gleyed Matrix (S4) ❑ Redox Depressions (F8) unless disturbed or Problematic. Restrictive Layer (if present): Type: Depth (Inches): Hydric Soils Present? Yes ❑ No Remarks: .r Wetland Hydrology Indicators: Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required) ❑ Surface Water (At) ❑ Water -Stained Leaves (139) ❑ Water -Stained Leaves (139) ❑ High Water Table (A2) (except MLRA 1, 2, 4A, and 4B) (MLRA 1, 2, 4A, and 4B) ❑ Saturation (A3) ❑ Salt Crust (B11) ❑ Drainage Patterns (1310) ❑ Water Marks (131) ❑ Aquatic Invertebrates (B13) ❑ Dry -Season Water Table (C2) ❑ Sediment Deposits (82) ❑ Hydrogen Sulfide Odor (Cl) ❑ Saturation Visible on Aerial imagery (C9) ❑ Drift Deposits (133) ❑ Oxidized Rhizospheres along Living Roots (C3) ❑ Geomorphic Position (D2) ❑ Algal Mat or Crust (134) ❑ Presence of Reduced Iron (C4) ❑ Shallow Aquitard (D3) ❑ Iron Deposits (B5) ❑ Recent Iron Reduction in Tilled Soils (C6) ❑ FAC-Neutral Test (D5) ❑ Surface Soil Cracks (136) ❑ Stunted or Stresses Plants (D1) (LRR A) ❑ Raised Ant Mounds (D6) (LRR A) ❑ Inundation Visible on Aerial Imagery (137) ❑ Other (Explain in Remarks) ❑ Frost -Heave Hummocks (D7) ❑ Sparsely Vegetated Concave Surface (138) Field Observations: Surface Water Present? Yes ❑ No ® Depth (inches): Water Table Present? Yes ❑ No ® Depth (inches): Saturation Present? Yes ❑ No ® Depth (inches): Wetland Hydrology Present? Yes ❑ No (includes capillary fridge) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: Moist but not saturated US Army Corps of Engineers Western Mountains, Valleys, and Coast — Version 2.0 WETLAND DETERMINATION DATA FORM — Western Mountains, Valleys, and Coast Region Project Site: South 336' Street Tightline City/County: Federal WaylKing Sampling Date: 12/04/18 Applicant/Owner: City of Federal Wav State: Wa Sampling Point: DP-2 Investigator(s): S. Quarterman Section, Township, Range: S17. T21 N. R4E Landform (hillslope, terrace, etc.): terrace Local relief (concave, convex, none): none Slope (%): — Subregion (LRR): LRRA Lat: 470187.39 N Long: 122;18'48.24 W Datum: — Soil Map Unit Name: Everett-Alderwood 4!pvellv sandy,loams. 6 to 15 peme, nt slooqg NWI classification: UPL Are climatic / hydrologic conditions on the site typical forthis time of year? Yes ® No ❑ (If no, explain in Remarks.) Are Vegetation ❑, Soil ❑, or Hydrology ❑, significantly disturbed? Are "Normal Circumstances" present? Yes ® No ❑ Are Vegetation ❑, Soil ❑, or Hydrology ❑, naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Yes ® No ❑ H dric Soil Present? Is the Sampled Area Y Yes ❑ No ® within a Wetland? Yes ❑ No Wetland Hydrology Present? Yes ❑ No Remarks vr_ur_i m i ivry —use scienurrc names or pianrs Tree Stratum (Plot size: 30 ft) Absolute Cover Dominant Species? Indicator% Status Dominance Test Worksheet: 1_ Agnulus balsamrtera 100 ves FAC Number of Dominant Species 2. 3 That Are OBL, FACW, or FAC: (A) 3. Total Number of Dominant 4 (B) 4. Species Across All Strata: 50 % = 50, 20% = 20 100 = Total Cover Percent of Dominant Species SaorinolShrub Stratum (Plot size: 15 ft) That Are OBL, FACW, or FAC: 75 (A/B) 1. Rubus armeniacus 10 ves FAC Prevalence Index worksheet: 2. Symahoricaraos alhus 5 ves FACU Total % Cover of: Multiply bv: 3. — OBL species x1 = 4, — FACW species x2 = 5. FAC species x3 = — 50 % = 7_5, 20°/ = 3 15 = Total Cover FACU species x4 = Herb Stratum (Plot size: 5 ft) UPL species x5 = 1. Carex obnuota 40 ves OBL Column Totals: (A) (B) 2. Geranium robertianum 1 no FACU Prevalence Index = B/A = 3. Hedera helix 1 no FACU Hydrophytic Vegetation Indicators: 4. ❑ 1 — Rapid Test for Hydrophytic Vegetation 5. ® 2 - Dominance Test is >50 % 6. — ❑ 3 - Prevalence Index is <3.0' 7' 4 - Morphological Adaptations' (Proyide supporting ❑ 8. data in Remarks or on a sW. . ate sheet) 9. ❑ 5 - Wetland Non -Vascular Plants' 10. 4 ❑ Problematic Hydrophytic Vegetation' (Explain) 11 50% = 21, 20% = 8 42 = Total Cover 'Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic, Woodv Vine_&tralum {Plat size: —) 1. i 2 Hydrophytic Vegetation Yes ® No El =Total Cover Present? Present? % Bare Ground in Herb Stratum 60 Remarks US Army Corps of Engineers Western Mountains, Valleys, and Coast —Version 2.0 Project Site: South 336"' S r SOIL Sampling Point: 2P-2 Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Type' Loc2 Texture Remarks 0-19 10YR 3/2 100 gravelly - Refusal- [�19 loam 'Type: C= Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains 2Location: PL=Pore Lining, M=Matrix Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3: ❑ Histosol (Al) ❑ Sandy Redox (S5) ❑ 2 cm Muck (A10) ❑ Histic Epipedon (A2) ❑ Stripped Matrix (S6) ❑ Red Parent Material (TF2) ❑ Black Histic (A3) ❑ Loamy Mucky Mineral (F1) (except MLRA 1) ❑ Very Shallow Dark Surface (TF12) ❑ Hydrogen Sulfide (A4) ❑ Loamy Gleyed Matrix (F2) ❑ Other (Explain in Remarks) ❑ Depleted Below Dark Surface (A11) ❑ Depleted Matrix (F3) ❑ Thick Dark Surface (Al2) ❑ Redox Dark Surface (F6) ❑ Sandy Mucky Mineral (S1) ❑ Depleted Dark Surface (F7) 31ndicators of hydrophytic vegetation and wetland hydrology must be present, ❑ Sandy Gleyed Matrix (S4) ❑ Redox Depressions (F8) unless disturbed or problematic. Restrictive Layer (if present): Type: Depth wishes:. Hydric Soils Present? Yes ❑ No Remarks: HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one required; check all that apply) ❑ Surface Water (Al) ❑ Water -Stained Leaves (139) ❑ High Water Table (A2) (except MLRA 1, 2, 4A, and 46) ❑ Saturation (A3) ❑ Salt Crust (B11) ❑ Water Marks (131) ❑ Aquatic Invertebrates (1313) ❑ Sediment Deposits (62) ❑ Hydrogen Sulfide Odor (Cl) ❑ Drift Deposits (133) ❑ Oxidized Rhizospheres along Living Roots (C3) ❑ Algal Mat or Crust (134) ❑ Presence of Reduced Iron (C4) ❑ Iron Deposits (135) ❑ Recent Iron Reduction in Tilled Soils (C6) ❑ Surface Soil Cracks (136) ❑ Stunted or Stresses Plants (D1) (LRR A) ❑ Inundation Visible on Aerial Imagery (137) ❑ Other (Explain in Remarks) ❑ Sparsely Vegetated Concave Surface (138) Field Observations: Surface Water Present? Yes ❑ No ® Depth (inches): Water Table Present? Yes ❑ No ® Depth (inches): Secondary Indicators (2 or more required) ❑ Water -Stained Leaves (139) (MLRA 1, 2, 4A, and 413) ❑ Drainage Patterns (1310) ❑ Dry -Season Water Table (C2) ❑ Saturation Visible on Aerial Imagery (C9) ❑ Geomorphic Position (D2) ❑ Shallow Aquitard (D3) ❑ FAC-Neutral Test (D5) ❑ Raised Ant Mounds (D6) (LRR A) ❑ Frost -Heave Hummocks (137) Saturation Present? Yes ❑ No ® Depth (inches): Wetland Hydrology Present? (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: Yes ❑ No US Army Corps of Engineers Western Mountains, Valleys, and Coast — Version 2.0 WETLAND DETERMINATION DATA FORM — Western Mountains, Valleys, and Coast Region Project Site: South 336m Street Tiohtline City/County: Federal WavlKino Sampling Date: 12/04/18 Applicant/Owner: Citvof Federal Wav State: We Sampling Point: DP-3 Investigator(s): S- Caarterman. E- Henrichsen Section, Township, Range: S17, T21 N. R4E Landform (hillslope, terrace, etc-): Terrace Local relief (concave, convex, none): none Slope (%): Subregion (LRR): LRRA Let: 47:18'5.70 N Long: 122;18'50.16 W Datum: Soil Map Unit Name: Everett-Alderwood oraveliy sandv foamy 6 to 15 percent slooes NWI classification: UPL Are climatic / hydrologic conditions on the site typical forthis time of year? Yes ® No ❑ (If no, explain in Remarks.) Are Vegetation ❑, Soil ❑, or Hydrology ❑, significantly disturbed? Are "Normal Circumstances' present? Yes ® No Are Vegetation ❑, Soil ❑, or Hydrology ❑, naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Yes ® No ❑ Hydric Soil Present. Yes El No Sampled Area No ® within a Wetland? Yes ® No El Hydrology Present? Yes El No Is Remarks vr=ur_r m i rurr — use scienTrnc names oT pfanis Tree Stratum (Plot size: 30It Absolute % Cover Dominant Species? Indicator Status Dominance Test Worksheet: 1. Po;)Utqs 4alsamifera 75 ves FAC Number of Dominant Species 2- — 3 That Are OBL, FACW, or FAC: (A) 3- — Total Number of Dominant 4 (B) 4- Species Across All Strata: 50% = 37.5, 20 % = 15 75 = Total Cover Percent of Dominant Species SaplinalShrub Stratum (Plot size: 15 ft) 75 That Are OBL, FACW, or FAC: (AIB) 1. Rubjj5 arm niacus 5 yes FAC Prevalence Index worksheet: 2. Total % Cover of: Multiply by: 3. OBL species x1 = 4• FACW species x2 = 5• _ FAC species x3 = 50% = 2_5. 20 % = 1 5 = Total Cover FACU species x4 = — Herb Stratum (Plot size: 5 ft) UPL species x5 = — 1. Galium aoarine 10 ves FACU Column Totals: (A) (B) , 2. $ataun ufus reoerrs 5 es FAC Prevalence Index = B/A = 3. — Hydrophytic Vegetation Indicators: 4• _ ❑ 1 — Rapid Test for Hydrophytic Vegetation 5• — ® 2 - Dominance Test is >50% 6. ❑ 3 - Prevalence Index is <3.01 7. 4 - Motplioltfbcal Adaptations' (Provide supporting ❑ 8, data in ReiTtrks or on a separate sheet) 9• ❑ 5 - Wetland Non -Vascular Plants' 10. _ ❑ Problematic Hydrophytic Vegetation' (Explain) 11, 50% = 7_5, 20% = 3 15 = Total Cover — 'Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. Woodv Vine Stratum (Plot size: 30 ft) 1. _ 2 Hydrophytic Vegetation Yes® No ❑ 0 0 50% =,20/= Total Cover Present? % Bare Ground in Herb Stratum 75 Remarks US Army Corps of Engineers Western Mountains, Valleys, and Coast —Version 2.0 Project Site: $OU!l1336f Street enu SamOina Point: OP-3 Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Type' Loc' Texture Remarks 0=8 10YR 3/2 100 loam 8-14 10YR 4\3 98 7.5YR 4/6 2 C M raa velly laroe cobbles loam 'Type: C= Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 'Location: PL=Pore Lining, M=Matrix Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3: ❑ Histosol (Al) ❑ Sandy Redox (S5) ❑ 2 cm Muck (A10) ❑ Histic Epipedon (A2) ❑ Stripped Matrix (S6) ❑ Red Parent Material (TF2) ❑ Black Histic (A3) ❑ Loamy Mucky Mineral (F1) (except MLRA 1) ❑ Very Shallow Dark Surface (TF12) ❑ Hydrogen Sulfide (A4) ❑ Loamy Gleyed Matrix (F2) ❑ Other (Explain in Remarks) ❑ Depleted Below Dark Surface (Al 1) ❑ Depleted Matrix (F3) ❑ Thick Dark Surface (Al2) ❑ Redox Dark Surface (F6) ❑ Sandy Mucky Mineral (S1) ❑ Depleted Dark Surface (F7) 3Indicators of hydrophytic vegetation and wetland hydrology must be present, ❑ Sandy Gleyed Matrix (S4) ❑ Redox Depressions (F8) unless disturbed or problematic. Restrictive Layer (if present): Type: Depth (inches): Hydric Soils Present? Yes ❑ No Remarks: Refusal after 14 inches. rvnonr nr_v Wetland Hydrology Indicators: Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required) ❑ Surface Water (Al) ❑ Water -Stained Leaves (B9) ❑ Water -Stained Leaves (139) ❑ High Water Table (A2) (except MLRA 1, 2, 4A, and 413) (MLRA 1, 2, 4A, and 4B) ❑ Saturation (A3) ❑ Salt Crust (1311) ❑ Drainage Patterns (B10) ❑ Water Marks (131) ❑ Aquatic Invertebrates (1313) ❑ Dry -Season Water Table (C2) ❑ Sediment Deposits (132) ❑ Hydrogen Sulfide Odor (Cl) ❑ Saturation Visible on Aerial Imagery (C9) ❑ Drift Deposits (63) ❑ Oxidized Rhizospheres along Living Roots (C3) ❑ Geomorphic Position (D2) ❑ Algal Mat or Crust (134) ❑ Presence of Reduced Iron (C4) ❑ Shallow Aquitard (D3) ❑ Iron Deposits (135) ❑ Recent Iron Reduction in Tilled Soils (C6) ❑ FAC-Neutral Test (D5) ❑ Surface Soil Cracks (136) ❑ Stunted or Stresses Plants (D1) (LRR A) ❑ Raised Ant Mounds (D6) (LRR A) ❑ Inundation Visible on Aerial Imagery (137) ❑ Other (Explain in Remarks) ❑ Frost -Heave Hummocks (D7) ❑ Sparsely Vegetated Concave Surface (138) Field Observations: Surface Water Present? Yes ❑ No ® Depth (inches): Water Table Present? Yes ❑ No ® Depth (inches): Saturation Present? Yes ❑ No ® Depth (inches): Wetland Hydrology Present? Yes ❑ No (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: US Army Corps of Engineers Western Mountains, Valleys, and Coast — Version 2.0 APPENDIX E Selected Site Photographs r w ter-,' �///_l'�f■R •• �..�7;, � . 3. Looking southwest at culvert and Waterway A at south end of project area. 4. Looking northeast at DP-1. South 3361h St Tightline Figure 14 LANDAU and Water Quality Project Selected Site Photographs E-2 ASSOCIATES Federal Way, Washington It'. 7 rR '00000000/ 4 44r� 7rr Proposed 5 33�th 5t Ti htline and'' �. p g .a. CEIVED �s4J Water Quaiit Pro e� y � 0 2 zais � Vicinity MapAUC .: f al; _ r Project Location# Parcel Address: 33333 Pacific Highway S W=- Parcel Number: 1721049047 Legend Open Channel Wetlands Storm Drain Features N -= ------ Public Storm Drain ON �z.� - - 4 i Public Storm Drain Trunk 0 250 500 1,000_:- City Ponds TOPOGRAPHIC SURVEY FEDERAL WAY, WA SEY OF THE SE y, SECTION 17, T. 21 N., R. 4 E., W.M. _ PACIFIC HWY S NOI'12.151 _ CENTER LINE A I • - � - NOl'19'20i 362.57' SECTION LINE L I � I N13'12'51'W ROW JUDGMENT ^I r2081 AFN 20030808001349 �I 1 STUN � � - j RIM=363 BO - - - - - - NOl'1215E 34?47' (REC) 34225- (CA-C) I PM% 19006 f L IL W/NG 1567 I 1 LOT 3 SP 677160 I I AFN 197710260533 1 ' �I j ROS 19921119901I VIP IjN I _ "`IS'DEC TPN 1721049047 I '� 1R LOT 2 TPN 1721049026 INLET IE 48• CONC=35041 \ 1, I?P �7,[ i0- xTER TAyu II TAN 1721049112 I 11' DEC1 t 1: DRIP AFp 75D7070500 to uP { ID, DEC i t , 10" DEC �1yIq' DRP I ' GRAVEL 9• DEC '. _ .I I 1t 'L &; I !El�27213' SET N 80&q 6" OEC "� _ jr DID, Y 14099 1 etc ._� 13-9 OEC {•�.. i y„ I. fl! V=3fifi ;' d ,l� \� 9' DESv DEC 14' VW 1 . _ _ �.7 .. --`. ` - 10' DEC F iWF i' [EC I 5' B9F F•1. ACC I f � ss1 ,m Fs Y nEs °• IX[ Aj' °A7I 6 Drw I 1 Fhl[ �300I +O' DPR ,.' _ •'�1 ♦ . - 6 •O 'Cr Bw p- }' 4' Apt a Opp 0 e' DEC 9_• r a, p '•' x SET HUB dl MI1D 1WL PMX 300p A.'. r '•t 15- DEC. Cr • _ _ t3 - - .. 7• 'O I DRP 4 .ilmP 3' LRM f N=113689 77 LA !.: J'A. •TS- _ - p' IX[ 1 L' !HC - f ❑ 0 0 I . Jr Bic r me ID' DID, R- ti E=1272_.l 4 SET NU9 &TACK RX. •rx j 'A ti IT OIL ?. IV DW \ 16 Ge>P 1 >r �-y { J� ) I ELEV=3e4.75' 12 DEC 5' DP3Rp F IIOP / 1 N=11403fi.46 '{� Iq' +7' EWP . _ p p- - . b' DI[ 0 O 4 P� 6' E=127291&99 17 DEC ~Sl -111 x1 `Iq• rcm - I1r12 °'� E' Nc •• v b• AEP _ 1 .�.p ad �m A ELEV=J67.50' 1O DRIP .l s�'i I. _ �-�. - - TY GEC • 5 �. t1=k---- p ID' AQP . f 6 OE: �1- !• DEC I a' MC i i as {app - 41y lo' ERR 1 \ tG DA1P? `f I• a[ f , I DEf ,p FOUND )j REBAR \r. i le.� 5r 11.m. f�L'}�� b DOUR O' IY uC_ _ I :" p12' 00P 0 17 DRIP - . ~' . 2r DEL ❑ S' DECI W YAP 9' RECp IC ORP I CAP STAMPED �F/ 12' DEC lT• RC t .. sD• C(c O 1 ]S DEC ',: D� ,0• p 0 b' n4P i• DEC' , I 8 Gpp IS' a4 :`- -T. ' 1 13Ri _ 15' GEC 1 `` BEL !NC 10616- ' ( 7 r'•-le' xJ D Dap A✓Y YOWP i 14 DEC 1Y 09b - _•a x t, -_.+ 2.12• Gd.G .� 15 01 � A � IiY OCI 1C DEC 0.11' S 12' OFF � :-' `�`. tea' �i1- IXC g aC )ram-D97�•_•Eb _ 1 DAP 1 OF PROP. coo =�� : u C FOUND Yz• REBAR w/ WHITE 12" OEc _ E• DEC - - --` _ _ ul. dly 1:' qEi I I IS' DEC H' MCI F p tnw, 4•x PE,[I PLASTIC CAP STAMPED I1 DbP } _ - - e• 11.c xr; 1�.: -y �.:` _ IG' DEC a' 1D' - f Ir u� 'SEA INC LS 10618' F [sal .. _ B DFP _ '6j7 IBCr- - _ - I� ! I IY IX[.. - I DIE = P V'DEC j• DE[ ' • ,y 1 f0 DWP 0,22' W & 0.15' N OF HY DOUR' ti . F DaiY CON . E- - �& DRP _ r,': � - - _ = y= . _-. -S1gl° J - .* F [a9 F EKG S 9Es6' tic a r� DEt [ 3 _ � � � K � 4' c&* CALC PROP COR. •. %►' s� a' CAP.. -` _: e,�' 12• DEC . .t.. 2x IT D7!P U • _ • - 10' CLN - . , BTCPII .. •` =5I' GEC ^'.� DAP .. -- -- DAP p 0, _.�'A'000 �_•, _ __ .S'EFP� r' •iS. C3� Y 7D'DE[-' t - .�_ 7� POINT TABLE 5' 1WAP tY EkL"r# t �r.� _ _..��.r.ti 1' IS'�av' _ T' _ •^ .b• WWO _-_.a'� a 0' Des D 9RP 0' f R9 10 04P 22.l6 1p 2•,9' AEC' a[ K' DEC POINT NORTHING EASTNG IELLVAlION DESCNPnON 2. c •�' ;13 8 e. �C IF' p[L i6 r12' LINO IF ORV . PROP0 0 6ASL01W b' DfP 11W 7d' ✓ILL. N01't9'2OE ` _ �t5' DE1P IV GNP 9' DCi 5 DEC T .%'• J000 11103646 1272916.99 36750 SET HUB 8 TALK I ' l '^ 3001 113812.45 127207668 348.06 SET HUB & TACK 362.61' ' r• O / . C 0[0 1 ME ]002 I136e977 127285334 314.75 SEi XUB & IIFG NAIL & TACAt I •ti CAPp,1. A 4 DKp5•2.45 I 1 DE[ .3003 11354115 1272921,64 347.45 SET HUB & MAG HAIL /� 76.BB I Y DFL I°' Occ3005 11358770 127280659 342.53 59 HUB & TACK LOT ' I Ip DEC Mc 90D5 11J32209 127920.95F36.632 SET weG NAIL Si`COMA 8U5 PK _ 9DO6 114175.71 127313056 SET MAG NAIL I ,p ORw �• i0' ❑ Ir 0 6 e VC 1: �I - ' VOLV113 PG 37 I j �' DaR p 9007 11409926 127293354SET HUB & MAE NAIL TPN 7681900030 10' sWA SCtIX EA9W F0UHF7 3(y REBAR & NISI 7`A7W0500 IC N[.A, A 4 0}. AEC I f I I I PIA% 1.f003 SET NAG MAIL W/ PINK FLAGGING Ny 113541-09 E=1272921.65 ELEV=347.45' 4vJ5.1y 2-B DEC 110' DRIP FOUND %' REBAR & D CAP STAMPED 'SEA INC 10618• INLET ! HE 3fi• ADSgo 0 ' 1RlSN RACK ROCKERY WALL �I �28%59 ICIP STAMPED `SEA INC I I 1J! ARP L1 I,- TO 16 DEL W DUR HORIZONTAL DATUM: LS t061B• AT CALC I I I DEC pp° ID a �c IOANLIR MUM GAR M 91?41 IS MAD 111&*1) WED 01 MUSNED AND0.N%11G11 i FIRLTP. CORNET! FM THE OI17 C< FEMEAL RAY CO10H7E DMA04.9T• POINT 03CHRI IMS 121 FPO 0002) ' ) I LOT 2 10, e I z AND 122 (PY% 19DO3) 1Y ((t t (�/�t� []' l ]D' [W%X): PROJECTION IS HASHINGTON STATE PLANE NORTH ZONE, US SURVEY FEET I I 6-7�[.'J WIA T]LJ� 1-K I e PONT DESIGNATION 121 (PMSAN SEWER 19002) FOUND 2• CIA DOMED BRASS v/ PUNCH IN CONC SURVEY NOTES: APPX LOCATION of ID 0.65' DOWN N MON CASE I I R FASMT. VOL i 13 PG 37 ' NORTHING: 11326333 1 INS CORRECTLY flE7ME5D11S CONDITIONS AND FEATURES EXISTING AT THE TIME OF AFN 770JOB07fi5 SURVEY N JUNE, 2018 I I TPN 7681900020 FASTING 127081276 , POINT DESIGNATION 122 (PMX 19003): FOUND 1-�Y' DIAL FLAT BRASS v/ SCRIBED '%' IN CONIC 065' DOWN IN No CASE NORTHING: 113274 39 EASnNG: 1268469 47 VERTICAL DATUM: VERTICAL DATUM IS NGVD29 EM6TD 17M nATmED INFORMATION FROM THE CITY OF FEDERAL "I [ONIIDL'9IMPSE, POINT DESIGNATIONS 4452 (PMX 19008) AND 2200-27 (PMX 19009) POINT DESIGNATION-4452 (PMX i90(IB): FOUND 1-)f' FIAT BRASS v/ PUNCH MARK IN CONIC 0.90' DOWN' IN MON CASE ELEVATON 312 181 POINT DESIGNATION 2200-27 (PMX 19009): FOUND CHISELED SOMATIC IN HE CORNER OF GONE SLAB FOR WESTHILL COURT SIGN ELEVATION: 329.05 2. CONVENTIONAL AND GPS SURVEY EQUIPMENT WAS USED IN THE PERFORMANCE OF THIS SURVEY. ALL EQUPMENT 15 MAINTAINED IN CONFORMANCE WITH CURRENT STATE STATUTE. 3. THS SURVEY WAS PREPARED BY FIELD TRAVERSE AS PER WAC 332-130-090. PART C RELATIVE ACCURACY EXCEEDS 1 FOOT IN TER THOUSAND 4. ALL SURFACE FVOURM"WMW STRUCFIIRE ELEVATION SHOWN HEREON WERE FIELD LDOAFEEI AIO MEASOM DX PARAMETRX FOR THIS SURVEY. UNDERGROUND UTIUTY LILIES ARE FUSED UPON SURFACE FEATURE MEASUREMENTS. 5 TIE ROA NOQ MWD AD pMRMWEC ALAI 114 UW%RmCUmD Urunm &pW1 Cp1 m ALL SUCH UTUIIES IN THE AWLAL QM N SERKE OR IHMiOONOD THE S J`VDC E'FUWINER OEl9 Vol WIAw HMT LIE IADOM W70 UTAITES SN17WW ARE N INE CX141 LOCAFDW WmeAMD JLMFp1 HE DOES CF M DW DO ARC COCA" AS KGWAIFLT AS POSLAF FROM INFORMATION AVAILABLE 6. PROPERTY BOUNDARY AND PACIFIC HWY S. RIGHT OF WAY 15 BARED UPON A 1992 SURVEY OF LOT 3, Sp 1677160. RECORDED UNDER AUDITOR'S FILE NO. 19921119901. D C' aF NA ff 1rKaX- 5 'F A%4L LAN9 le SCALE 30 0 fS 3.7 60 Z ( FEET ) 1 INCH = 30 FEET I] PMX pm FOUND %" DIA BRASS ROD IN CONC 1.8' DOWN IN MON CASE I� ~I co 2: r (LOT 1) co co co (LOT 3) FMX 19005 SET MAG NAIL r/ PINK FLAGGING N=113322.09 E=1Z292093 ELEV=34a 13' PARCEL A ROS 20161115900001 (WEST CAMPUS PARK DIV. 4 --- VOL.101 PG.34) FED. WAY 021 FOUND 2' DW pp.EIEU BRASS w/ PUNCH IN CONC 0.65' DOWN IN MON CASE � o z I LEGEND + BENCHMARK FOUND r FOUND NON PIPE 8 FOUND CASED MONUMENT FOUND REBUT AND CAP ❑ SET HUB & MAC/TACK X SET NAG NAIL Q DECIDUOUS TREE - DW (IN), GRIP LINE (FT) iA CONIFERONIFERTREE - DM (IN), DRIP LINE (R) O MANHOLE STORM STORM DRAIN LNE -o o [TUN UNK FENCE FED -WAY �122 FOUND 1 �• DIA FLAT - - - PROPERTY BOUNDARY' LINE BRASS W/ SCRIBED Y .. - ADJACENT PARCEL LNE 1N CM 0.65' DOWN _ - CENTERLINE MDN CASE RECEIVED ENT PROPOSED E15EY - - - - - - - EXISTING EASEMENT - SECTION LINE ______________.... OF WAY LINE GRAVEL LINE GRAVEL �/�9 A [] //� 1R ry Y AUG 0 ^ 2018 - - - - - - _ - - - TOP/TOE RAVINE 1 OF 1 CD co CD N Ul O O -n o o =' x (D C e. 1 (D W O J CD N;d O a n v Q my D' -x. �m� (D �k CD U) D_ n CD CD 3 m - 71 � (D(D (D CD =— O <0 O X m C • Cll N_ O . A +� 1D C. N CL (n C) 0 CD CD CA — m co ,CD '13 cn-. D += CD —. (D 0 "' DZ5 CD Z � CD om C DD �CD —� P i i� a _AAA N A) CQ (D (_n MF CD X •+ .D+ ■ D ! OOOMO �i (ram �_ LALt CD � -- - r CD 0 (a- U) O c/) O ® C/) O 0 O = = S- -n O C/) cn Q CD o � D A� � cn m ® 0 --=J o — J �cn— - � 4:: co PACIFIC guy (D VJ D v I TOPOGRAPHIC SURVEY FEDERAL WAY, WA SEy OF THE SEy, SECTION 17, T. 21 N., R. 4 E., W.M. PACIFIC HWY S NOT12'15"E - CENTER LINE T' N01'19'20"E 36257' SECTION LINE � I 'I L- 1 N73•12'sIv ROW JUDGMENT ^E �_ _ - r •^ r znel' AFN 20030808001349 J SDMH RIM=353 BO - NOl'tY15IE 342.42' (NEC) 342.25' (CALC) r ` ^ 77- - I I j 1 I I ' PMx 09008 I I • SET MAG NAIL w� PINK FLAGGING N=114176.71 E=1273138.56 I ' Ei1Vx]6499' LOT 3 SP 577160 AFN 197710260533 'NM ' ;Yo; ROS 19921119901 TPN 1721049026INLET W LNA TPN 1721049047 I 1 _ LOT 2 VILE p�Y'f IE 48• CONIC=35OA1 12' Don + ^� I TPN 1721049112 17'. TiL SqA IG SAL SSWFA F4dA1 it' DEC i ,'�''"• y� 1i' U+� - MM 7507°7D`i°O !� ! rW 4"'Ll I I I I �. � • ' LtW[ 5W 9' DEC I IQ' a[ f. PMX 19DO7 B , ? d• pow � 6" DEC �1109926]11111 & IA' 4IEy12729J3,513' DEC 6' DEC ELEV=38532' 3-9' DEC T 1 r 0.0 1 I, 14'pY 1 _-�._ ''1�� F 16•a[C 1:' W4 �I E•9SC L CT -- 1o' DEC _ _ ti. �� E " � + ~ � ' � - � 7 [CC 5' DRIP, 2-T, a[ j J ' �-li d• pl•p 10'OT+E At' [ri: - 351 1p• CAP Y CL[ Y am 1 0RP p IC 9m I .•+ P►1% 83002 RL SCALE 30 D F5 3D FEET ) E Finai - m FEET --- 455 10' - PMx pow FOUND it DIAL BRASS ROD IN CONIC 1 8' DOWN IN MON CASE �I TO C p V, ,� . - , 1 S GY •7 17 DRIP 0 _ `•` t' CRP 6 dlr D 4- DEC 9 Y DEC P S4 I SET HUB & MAO NAIL PAtlf + I, . L •, - tY LYC r - o - . D - - a• 1R-C a' tlEt •rT .o I '4 �P 6• aWP I ) F N=113fi89 77 1 1: '., la. ,I: E CO, 1 D o o D t SET NUB & TACK _ _� �5• D[L Y D°C 1°' � Y .1•� >i A - 10' CEc TD' OAw ID'I r xt aMt I EY1272953.34 E1�i14036.46 `` 1 1Y WP �2 FALL 4 5 TEOP ~ • ,6 V C 7LP � ELEV=344. 75' PMX 13003 E=1272916.99 Iz DEC 'F'• r, 1 1 1r aXC �2- OPp •_ 6' DEN'• o _ - �- I i a o1Q- J Ilfi E I SET MAG NNL w la' IOU Ar 6' DCi 1 E PIKK FULGGING / EL 1• ..� .( i 14' ��4�� -� uc•� t 5-°\"c - ° uma +•',•. D �cE �t5' OEC Fp• ppP r Ctt \ n• DEC ,. 1r aL D _ N=113541 09 B DE �•� 6 COP t3• a[ T2• '• 11' D[C ' 111{F ORP� ta, ➢RV �1 ft'!XC 'A• 7 A� C °�°• CfC FOUND 34 REBA[ & E=1272921-65 B 1� DEL `, �I y"-' - 7 1YIR P IO CW1° A` • t'• DGC 0 9' L I 4' 14P 4• aCD I CAP S1MOU •SEA 12 DEc ! 17- •,- _: - 3F DE. L . _ 1F DEC's yi' OR+ - pill' CE[ /A D p 0EC F. LAP 1 E-EU=3d7.45' B po7 t5• ESL �� _ *6. p4P _ �. {4 .]- C!!1 ap v5' a[ OW4 Tp BRP • I'G OEC 1 : 4' DAP I INC 10618" t4" DEC 7 A: ONP _ �`c " t- �L'.�M Ai ce. _ - -'4� 1.1Y OEC _ t5 CWt'❑ 0_ 0� 3p 4" GCC A--f fEC 0.14' W & 0.11' S 12' �`-`�_---c-�� -� 0°'P _ •ii• AEC 6 DRP OF PROP. CORNER FOUND Y2- REBAR w/ WHITE t2" DEC ' -DEC - �+.•- - 'r DEC ! MC, 11• t �- : -`..:: 1' � � �� . fA' LNIID' � � ! I • 6- EWar LM1f FENCE; 6 OAP � 9• �E �- i �� _ 1°• 9EC Ir p} _ u• DECz-9 DEC PLASTIC CAP STAMPED I z IA'IP 7 \ . , - . , _ _ �^-.� � !' D � a' DRF1 . - ' W DAw '' � `, '-�.` :; _ �� yT0 DI:v Ir DEC- 7 9• DEc - +' ID I1MP "SEA INC LS 10618' 11• DEC C DE _ _ ! -3. . • . w• cox - - - - - - - I n . }-S L'Ee B• DEs �s 0.22' W & 0-15' N OF 1C' CVR - - - EIIP -s- - - - - �.s• %' P 5 rkt 14' r/WP CALC PROP CAR. C. >p C'Cr 7• C0A 4'. .. .6Y>:C - � _ - � �. -,. � .. Y'a 6 6 0R• 7- ` 1_ rv--1�.' 0.LC � _ - _�• e• DEC . � K o?m '. . . - tD' cFi+ - � � [Ijn _ - � ? y � li aC � - � . `".•6 VeA ^^""FF -. - - r rP 4 . A -.In a : - •'I Ay u o - r' D+P rD at- ` ,; I - POINT TABLE POINT 1 NORTHING EASTNG EUNATION DESCRIPTION WED 114036.46 1272916.99 36750 1 SET HUB & TALK 3001 1IM1145 1272B76.9 34B.06 SET HUB & TALK 3002 113689.77 127255334 344.75 SET HUB & MAC NIL 3003 112541.15 1272921.64 347..45 SET HUB & MAG MAIL 3DO5 113587.70 127280659 34253 SET HUB & TACK 9905 113322.09 127920,95 349 13' SET MAC NAIL 9OU6 1I417B71 12731J&56 354.59 SET MAG NAIL 9007 114099,26 127293354 36632 SET HUB & MAG NAIL �r� - •�. _ 4, �2: ,>`r `- " CCU 7. p�{'-yl• aC .F22.96 s ESE[ .�^ �•.� - Td Cis E W. T7• tU1 17 CWI 12• CDN T e DWx --- - - 5• ww r - C ='ti y DRf x 9' 10 TRP f0- 1R'P - Tp' I)tlw - tV A� .• qTp G DTI O 4d ai -'•19' ai' �b• CCC � DRIP - '� L. Ir 1NC IQ iY COUP 6' DWP { OES �• x . \, Y F p 06EMON 5 0»p I TO• fAIYP - . 26• pLC •# 0E1 9 aC 65 DRIP e . 1Y01'14'20'E I ` EC IS ARP Tp• OMP • fi DAP II l62.61• PMX �3001 ! - 9• DEC1 SEi HUB &TACK p P } 4. 00P - B" DEC 1 5, DRIP I Acc j N+e L 13812.4s I 4' w J L te 4'" i Ew 121287688 i6 CDC 15 Epp 7 5 a([ I - IIY $ 1 ! LOT 3 ELF i=3aaD6 I ! 6' am s'➢sc �1 a SECOMA BUS PK I I e ow o 10' DRIP t6' 1YC •A3 10' DEC 8' DEC TO- DEC IT' DEC •.. i6 ow- VOL 1 1 3 PG 37 Iw "�+: 6 DRIP 0 4' DRIP % '8 o DRIP TOM 76s190O030 � SERE TA6MI- ° % - II1G1�jIR FOUND =$ D -SE & AlW 7507Q7R500 ) ! tF rR w 15 DEC OS' DRIP CAA STAMPED -SEA U:C ! + 1B' - IB• FIR HORIZONTAL DATUM: LS T06Ir A7 MC TcDEc �� .12 °"P HT gap 15 DEC wO IWX DATUM M °05 SACV•Y K K;O :465(91) BASED ON PUBUSHED INFORMATION PRO?. CORNER I ! 1� pWP B' DRIP ;Cr DEC fI MOM T14' m Cr FEppIL WAY CONTVQ% pATABkSE, POINT DESIWjIONS-121 (PMX 19002) I I LOT 2 AND 122 (PMX 19DD3) 14' DEC 10' DRIPOI i PROJECTION IS WASHINGTON STATE PLANE NORTH ZONE, US SURVEY FEET ! I B' SECOMA BUS PK "' J POINT DESIGNATION 121 (PMX 19002) FOUND 2• DA AN DOMED BRASS =/ PUNCH IN CONC SURVEY NOTES: ! SAASE1EM EASMT. VOL 1 1 3 PG 37 065' DOWN IN MON CASE AM 7703060165 NORTHING: 11326333 THIS SURVEY IN JUNEL 2016°NTS CONDITIONS AND FEATURES EXISTING AT THE THE OF I TPN 7681900020 FASTING. 127DO12 76 POINT DESIGNATION 122 (PMX 19003): FOUND 1-Y' DM MT BRASS =/ SCRIBED Y IN CONIC 065. DOWN IN RON CASE NORTHING: 11327439 EASRNG: 126846947 VERTICAL DATUM: A[RDA DARN R MPA2Y Ulm UX PUB1I 4a INFORMATION iRW THE at, OF FEDERAL IVY CFOIFIRLR CPf1ELSt, 1$wH 0E90*IOK 4452 (PMX 1900B) Atq 2200.27 {PION F9009) POINT DESIGNATION 4452 (PMX 19DO8): FOUND 1-)f' FIAT BRASS =/ PUNCH MARK IN CONE 0.90' DOWN IN MON CASE ELEVATION: 312 I61 POINT DESGNTON 220D-27 (PMX 19009): FOUND CHISELED SQUARE IN HE CORNER OF CONC SUB FOR WESTHIL COURT SIGN ELEVATION: 329 05 2 CONVENTIONAL AND CPS SURVEY EQUIPMENT WAS USED IN THE PERFORMANCE OF THIS SURVEY ALL EQUIPMENT IS MAINTAINED IN CONFORMANCE WITH CURRENT STATE STATUTE 3 THIS SURVEY WAS PREPARED BY FIELD TRAVERSE AS PER WAG 332-130-090. PART C RELATIVE ACCURACY EXCEEDS 1 FOOT IN TEN THOUSAND 4. Al, SIPFAU FEATIAWS AME&LRI STRUCTURE ELEVATION SHOWN HEREON WERE FIELD LOCATED Me MEASURED BF FNRAAETRX FOR THIS SURVEY. UNDERGROUND UTILITY LINES ARE BASED UPON SURFACE FEATURE MEASUREMENTS 5. THE SURVEYOR MANES NO GUARANTEE THAT THE UAT@iAUND UTILITIES SHOWN COMPRISE All SUCH UTILITIES IN THE AREA, EITHER N SERVICE 0 AWNWED. THE SURVEYOR FURTHER DOES NOT WARRANT THAT THE UNDERGROUND URUTIES SHOWN ARE IN THE EXACT LOCATION INDICATED ALTHOUGH HE DOES CERIUM THAT THEY ARE LOCATED AS ACCURATELY AS POSSIBLE FROM INFORMATION AVAILABLE 6 PROPERTY BOUNDARY AND PACIFIC HWY 5 RIGHT OF WAY 15 BASED UPON A 1992 SURVEY OF LOT 3, SP 1677160, RECORDED UNDER AUDITORS FILE NO 19921119901. FOUND %- REBAR & CAP STAM "SEA INC 10610' Imm IE 357 ADS=33596 TRASH RACK 1 H r� =I (LOT 1) Cr) CY') CIO PMx j9OD5 _ SET MAG NAIL W/ (LOT 3) PINK FLAGGING N=113322 09 E-127920.95 ELEV-349.13' PARCEL A ROS 20161115900001 (WEST CAMPUS PARK DIV. 4 VOL-101 PG.34) ROCKER,Y WALL LEGEND + BENCHMARK FOUND • FOUND NON PIPE M1( SODS 0 FOUND CASED MONUMENT ET HUB & TAN ■ FOUND REBAR AND CAP -113587.70 ❑ SET HUB & MAG/TACK 127i9p$j9 X SET MAG NNL LEvw342.53' O DECIDUOUS TREE - DIAL (IN). DRIP LINE * CONIFER TREE - CIA (IN) DRIP LINE ITT) O MANHOLE STORM LSD SNT01 DRAM LINE 0 O OWN LINK FENCE _ _--- PROPERTY BOUNDARY LINE ARKENT PARCEL LINE .- CENTERUNE .- PROPOSED EASEMENT - - - -- - - -- OUSTING EASEMENT - SECTION UNE .� RIGHT OF WAY UNE FEn WAY 0121 -4 FOUND 2" DIAL DOMED BRASS w/ PUNCH IN CONC. 0.65' DOWN IN MON CASE � m t FED. WAY #122 J, FOUND 114• DIA. FLAT BRASS w/ SCRIBED Y IN CONC. 0.65' DOWN IN CASE RECEIVE - - - - - - - - - - - - - - - - - - - - GRAVEL LINE TOP/TOE RAVINE At1G O 2 2018 CITY OF FEDERAL WAY PUBLIC WORKS DEPARTMENT FEDERAL WAY, WASHINGTON HWY99/336TH TIGHTLINE & WATER QUALITY FACILITY S 320th SE Project t' Location = a w m aMgr e I ® S 336th St CO h 15� 'CID w y ' S 3481h St VICINITY MAP NHS NWS-2018-804 RFB NO. ----- Callnaroleyou PARK i[ e F1tlRD:OLRAL DATUM: .ol4ofx uvr la lws s]asr a as trynl IMsa tll xsaKs MloelaON AIMM AIla" OW f>oN4 ff9 Iil, la [POISL fISW4. ION OCR Ill fMEt lil M5[[Cr 6 406MLAG RYA KM 1'7E VI '%qM fN Fdrt ttmWd1'N VA Ali mb Y,m m Q G 61/ nxw N O]C nBS Nnl N ITN La: FISIIC I1]Ofil21fi POMI f@.Wttll 113 (�lIX tG�61} !UM I-M' OK Mt 9N4 ./ Y1®Y M TUG nes• noel x ud GSf xOR11HS tlIIil� cuntc i>ta+cs.a VERTICAL DATUM: �. ryy fe.v s ILw.Y 6Wa :H .e>'+1.�1'b• Ix91 n[ trIf [I f[xRY H* �NYi p'.W`i. > K .0., 4E 01a f9W0 Ian ®Imox ua lN0 N�k FO.n i-1f Mr nns ./ NxnN WRI N we 0.9? OYxN M 1101 Gl4 FlkMllak ]121B1 IOYS 'iWMIP S7•afi lb IWIa OWID SPWE N XE CalFll d CIC S.W ifP xC:�i NiA� W% a9Nlst ]6Il5 DRAWING INDEX SHT # I DWG NO. I DESCRIPTION 01 C01 COVER SHEET 02 CO2 EXISTING CONDITIONS 03 CO3 EROSION CONTROL PLAN 04 C04 WO VAULTS PLAN AND PROFILE 05 C05 PLAN AND PROFILE 06 Cos PLAN AND PROFILE 07 C07 DETAILS OS COfi DETAILS 09 C09 I BIOFILTRATION DETAILS Project LocaS�M768190002900 Near 33333 PHwy S Located on P: 17210447, 1721049026,pj � � 3 pgp ! ' 4a9.iR4TH�i 1 �1 1 CEIVED JAN 8 2019 NTS ON MA Ty OF IEOEWAY NTS COMMUNRY ❑EVi�Fi npm r � r W r 10 w U) CD w co C a 7 CD w O w n rn Q I _ e Y m r W z E W V U W 2 it z 0UAW -U) To R d C01 mI =�1= 01 oF09 --I - -- -- ---- •--- - -- — -- - -�_ i_- = _ rr/ Nrj / - -- •`- J1f. '1 /Af y 9 hl'r4111\4i A o ylllih fj�'� NOl'19"IOT� �ry.+�+l+lS}V�I y � � _; I I .Iltlhllh4 362.6i' !�ll7rrr,If1717'1 � !-1 r �' I � �illhll41 ��, � �r+r7fl r �11•, i /�-,. IaS'.h1,S,j � rcruuEL �1,71>'+Il�1+If++�I I+l� r �,,�~ I }�I;�Il1ti•til f / / ! ❑ ) LU r----OUTFACE I -f LU I / ! ❑IZ D w+E yp• S 0: a w W l 7 V a 9U a 30 60 s a z �•• i I SCALE: 1-=ais ¢ ! NOTE: SCALEx2 FOR 11x17 SHEET a 90 SB944'30'E 29240' - ____ 57.67' -- H}T12'51V I � 81' I I � I J 'J JJJ,Ir�/��I�F��' '1 �::rr!.;�,,:�� °c — OHWM Ys�1l,,flrr / /�;; I � • a r r ; J rfl r 7'DC NI rr r I x ; — CENTERLINE OF STREAM f, r' Illlf r1 ! nl • Jill lilt t /'0'CPV she � • I1- ■ �y '[ I - -- - --- - - - --- - -- - - - ��— - ---- --- III _" � .. �,: ■ 5 ,�., z�s m 3'D'C--------- ------ ----- I ,r6I H 0RF^� +, - �� I rl 'O �� x+ ' i• ..i1 ) 5r [RIP +• CR F I 6' 0: fl \,a -lr- ti'{{�.r - I u• i. 0Ec yr_—..— �, DEC I ' &1 =, l .1 _ - _ NW44'56 W 298.33' _ - 51.74' ;0' 0Ec lu + RR 6'DRP� J 1Y CRP h J r I SFIP ,' -� Y to DEC r *'} ,m ' �Nuc 5. Ilr rll or it ri 6'DEC II 7 0 L• - y ' 5 CWdN LM rEI CE • •� 2-6' DEC e' LW -- STORM INLET D n O I I 5tl' DECEIVED 1--- 1 JAN 1 8 2019 [ ! CITY OF FEQEF3AL WAY U) �S } Z LU O LL } Z tz O =J Q U �D cM O ZC a LU U N = X F Y W 6i F F w Z LU U � w f a LU r=n Z a a C 0 2 ¢now wbsPs below. I Call before yo[r a I g [ �• 3ia 02 OF09 / I W441A 292.40' - 57.67' o` 7' [ 8' �~ _ xry! �i Ny e wY. H1SI2'51'W 20.81' L' '1 I � i -�Lr •Ir \\ . Hvr�iam'e r�++rrl�ll�dil �L-n�',-• rll 3szs,' r r x� --. 11111411{I, 1 I ,!f•1fllilli+ 11 � }II 111 , 141 f i 11I I I I u. �f rfr ff ... i•jaI , e - j NI r� � rlllll i�P �r V ', q rrllr O_c s� ----- - -G y F :]FRIF 7tIP D-C FF C- S DEC y� - VaaVVV � 62 5; m '�' 1 _ — NB_B'44'56 W 298433_ 51.74' _ 27823'- !• /p(/ ICt LL IC' C ` i y IG EEC B• —IC URIF,ae¢ 12"DEC 2 1 e- OF 6 CHAIN L FENC= 2_g- LfC ` S CRP I of CONUEUCTION NOTES D 1. CONSTRUCTION ENTRANCE AND/OR TEMPORARY WORK SHELF FOR CONSTRUCTION. EXACT LOCATIONS TO BE DETERMINED BY CONTRACTOR. 2. CATCH BASIN INLET PROTECTION. 3. PROPOSED TEMPORARY FLOW DAM TO DIVERT STORMWATER UPSTREAM OF PROJECT SITE. SEE DETAIL SHEET COB- TO BE DETERMINED BY FINAL CONTRACTOR SUBMITTAL 4. STRAW WATTLES OR APPROVED EQUIVALENT TO BE DETERMINED BY FINAL CONTRACTOR SUBMITTAL 5. CLEARING LIMITS. I I SECTION S r I ... I 1 I 1 I � - - - -- SBB'44'30'E 29Z40' • — - - 57,57'f T . �[fx - p13.12.51'A E 20.81' r 1 . I E! ul NI f �I =o RECEIVED I JAN 18 2019 CITY OF FEDERAL WAY — U� OE LVELOPME&T— cn .--.� i a ig Igg SCALE: T" W NOTE: SCALEx2 FOR 71xl7 SHEET 4. `,. 1(mwwhait belaW. Call before you dig vw 11 W } Z J X LL H � = J Q co cf couj Q 2 SHT 03 o,09 i MH �ti ~.:E �y :� c.� � 4y•VVl;lil }ii ill ,' _-,. �� ! 1 Ll s' ire:— -. \ } LVVVUIIV 1 11 � ♦ � V\ seat: r. 1411111V +1�RIIII I it 1;r,r,l OHWM :c-Z IIr� III i111 - c_r SEE PROFILE BELOW - .E: ! m r m D O Z I I I I � I I to• OM sort- uN ra:a+Mo �� I 20 o sa an 4 SCALE; 1'--W 1 I NOTE: SCALEX2 FOR 11X17 SHEET I I f I I I {I f STREAM CENTERLINE 4-111 r, _c 1 h; i �� 3 � ��` tea• li 1 '•� � �, ; . — -xa- > N _ - '-f c+„ � *A��ti\ti•� ��_�.._��-� r•c� .,. m}-�n ,,pp�' o 1 �� V>.IVV. 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QAO n7y,O -woft npAYE £LO6rAll 2 EL=359U0 Ws j,�,Wpl`F-10t36'lY1 r 0+00 i T— ORDINARY HIGH WATERLINE r PROPOSED GRADE EXISTING GRADE 36•HOPE _ 'STREAM BOTTOM CENTERLINE 1111 5s5 DECEIVED o N n IR-wr.Kr.wiQM1-Sl µ w w JAN 18 2019 0+50 1+00 1+50 CilY OF FEDERAL WAY car W W _ J_ ZLL J _L O =Q o Q �~ g >Q ^^ I� W Z W W ' C05 l:. - 05 o,09 �� 11\ 11! hff! r5 •\ � � �� rctc r� � I��I !} it � II1 :i !�� - � +'. - � 'rasa---- / cln• _��. j.r h 1 rr I5r r 1 1• r -�' ` - . '•'• yl llllr f li -�'aa �� gr f I5'nr:--be LFIF VAULT PROFILE ON SHEET C04 C -RIP e[Fm 1! 151 I�1 1N• .p5;i' �} -s. `' �•,4�� \ ram' -- t'f CE,-. 1 - . i • — = ti _ 2u . \ r1.r f I=: I =.` Y CFIF c,r. Ilrlr- -=Er of F,; `x��=- �yw� l! y+x >," L � \ c[c ' : = _ 1' ,,Sc L - -- •' ` `� - I i , - IMH r :LL Iv N•,'1 IEC UH � ... y�' � Rcacuctb�rlrc � A'B1' 1WWE ♦', \ .11"" ScE PROFILE BELOW � 1 l� 2A 0 2Q 40 1"- NOTE: SCALEx2 FOR 11x17 SHEET m O z q 6T OIA- STORM MANHOLE h N l•i CEr �- - / / C� W Z z C] — 71-1 .1m.--��1�`�>'caf� /I ~_��'•'IY? -. a. l' J _� -\, \I\� 7^r STREP.M CENTERLINE LIZ \1 :ra \ aaPw�fl 3i4 r ..I 1+40 1+50 2+00 2+50 3+00 3+50 4+00 <nc< . • rra >m owe ui W w_ J Z J � zLL 0 r d ~ — 2 Q � CD Z coco Of Q a m EIVE® Z 18 2019 �� Y w I WERAL war i] Z U DEVELOPMENT uj a W o � a H a a E 1 C06 Callnerweyaaa m ,m.06 oF09 TOP SLAB 1 48-.54-,60 e x� Il 9 � Vol FRAME & GRATE AWM5MNT SICTON LCfEJN2 6RCKS OR GRADE RWG: OPrgNN-}- ".oHOM2 24- OLW Ir STEF•20R LADDER. ORIENT N4fn INLET 90 STEPS WILL CLEAR PIPES. SEE M. OR 96' II NO. .e 48- 54- DMM.- B- 80- 72- DIAM.- 4- 98 DLAM -12"� r PRECAST BASE & / INTEGRAL RISER. MIN SEPARATE CAST IN PLACE 'FOR SEPARATE BASE OR SEPARATE CAST -IN -PLACE PRECAST BASE, ONLY FlEIfIFORCINO $IEEE [`yfD�-R��SEPARATE BASES ONLY) 0.2.1 SO. INfR. •N l..�lr• OI>tECTIDN FOR 48' OWL O.1e M IN./R. •N EACH OIREtIiKxi FOR 54. 014Y. D.26 TAT. INjFT, IN EACH ObiF.Clg11 FOR 80 OMM. G.35 SD- IN.fFi. -N FACR GKCIWN TOR 72: D9W. 0-30 SOL III./FT. 'N r ru DRMTQN FOR 96. OIAM. 1'-0- FOR 48, 54% & 60- DIAM 2'-0' FOR 72: & 96' DIAM NOTES: 1, CATCH BASINS SHALL BE CONSTRUCTED IN ACCORDANCE WITH ASTM C478 (AASHTO M199) AND AST31 C890 UNLESS OTHERWISE SHOWN ON PLANS OR NOTED IN THE WSOOT/AFWA STANDARD SPECIFICATIONS. 2. HANDHOLDS IN ADJUSTMENT SECTION SWILL HAVE 3" MIN. CLEARANCE. STEPS IN CATCH BASIN SHALL HAVE 6' MIN. CLEARANCE, SEE ONG, NO. 2-006. CATCH BAS04 DETAILS. HANDHOLDS WILL BE PLACED fN ALTERNATLNG GRADE RINGS OR LEVELING BRICK COURSE WITH A MIN. OF ONE HANDHOLO BETWEEN THE LAST STEP AND TOP OF THE MANHOLE. 3, ALL REINFORCED CAST -IN -PLACE CONCRETE SHALL BE CLASS 4000. ALL PRECAST CONCRETE SHALL BE CLASS 4000. 4. PRECAST BASES SHALL BE FURNISHED WITH CUTOUTS OR KNOCKOUTS. KNOCK01I15 SHALL HAVE WALL THICKNESS OF 2" LAIN- UNUSED KNOCKOUTS NEED NOT BE GROUTED l WALL IS LEFT INTACT. PIPES SHALL BE INSTALLED ONLY IN FACTORY KNOCKOUTS UNLESS OTHERWISE APPROVED BY THE ENGINEER. 5. KNOCKOUT OR CUTOUT HOLE SIZE SHALL EQUAL PIPE OUTER DIAm. PLUS CATCH BASIN WALL THICKNESS. MAY, HOLE SIZE SHALL BE 36" " 48" CATCH BASIN, 42' FOR 54_ C.B., 48" FOR SO" C.8-, 60" FOR 72" C.B., 84- FOR 96- C.B. MIN• DISTANCE BETWEEN HOLES SHALL BE Or FOR 40'. 54", AND 60" C.B.; 12" FOR 72" AND 96" C.B. 6. CATCH BASIN FRAMES AND GRATES OR COVERS SHALL BE IN ACCORDANCE WITH SEC. 7.05 OF K.C.R.S. AND MEET THE STRENGTH REQUIREMENTS OF FEDERAL SPECIFICATION RR-F-621D. MATING SURFACES SHALL BE FINISHED TO ASSURE NON -ROCKING FIT WITH ANY COVER POSITION. 7. ALL BASE REINFORCING STEEL SHALL HAVE A MIN. YIELD STRENGTH OF 60,000 PSI AND BE PLACED IN THE UPPER HALF OF THE BASE WITH 1" MIN. CLEARANCE. 8, MIN. SOIL BEARING VALUE SHALL EQUAL 3.300 POUNDS PER SQUARE FOOT. 9. FOR DETAILS SHOWING LADDER, STEPS, HANDRAILS AND TOP SLABS, SEE DWG. NO. 4-4. 10. SEE THE WSDOT/APWA STANDARD SPECIFICATIONS SEC. GRAVEL BACKFILL FOR FOUNDATIONS 7-05.3 FOR.IDINT REQUIREMENTS. fi- MIN COMPACTED DEPTH FOR PRECAST BASE ONLY. -RE+NFORONG STEEL (FOR PRECAST BASE & INTEGRAL RISER ONLY) 0.15 SO. a1/YF. IN EACH DIRECTION FOR 48- DIAM. 0.19 SO. KA7.. IN EACH DIRECTION FOR 54- DIAM 0.25 SO IN./lrr. IN EACH DIRECTION FOR 60. OWA. 0.24 S0. W./IT NI EACH DIRECTION FOR 72- DIAM. 0 29 S0. W jTT. IN EACH DIRECTION FOR 96' DAM. - -0" RING 4 CATCH BASIN TYPE 2 N.T.s. I-r.T.zra PLAN NOTES: 1. MATERIAL IS CAST IRON ASTM A48 CLASS 30. 2. DRILL AND TAP THREE 5/8"-11 NC HOLES THROUGH FRAME AT 120- AND 11 1/16" RADIUS. 5 SECTION A -A 3 LOCKING ROUND COVER FRAME 4JA TOP 01 SKID 0 SECTION A -A REV MAR 2011 I vle 11 I/16- FROM CENTER 1 7 1 5/16- ED LETTERS TE 4. DRILLED UFTING HOLE 3 BOLT -DOWN DETAIL 1 SD. Ile Jo \ -j USIGN DETAtt NOTES: 1. USE WITH THREE LOCKING BOLTS 5/8"-11 NC STAINLESS TYPE 304 STEEL SOCKET HEAD (ALLEN HEAD CAP SCREWS 2" LONG. DRILL HOLES SPACED 120E AT 11 1/16 RADIUS. 2. MATERIAL IS DUCTILE IRON ASTM A536 GRADE 80-55-06 3. DRILL THREE 1 INCH HOLES SPACED AT 120' AND 9 1/2" RADIUS., 4. THE WORDS "CRY OF FEDERAL WAY" SHALL BE OMITTED IF COVER IS ON A PRIVATE SYSTEM. 2 LOCKING ROUND COVER N.T.S. Drain grale Gravel backfill Plan View Concrete block Wire screen or filter fabdc Gravel backfill Overflow . wa1K POndlnDl�il Walor Drop inlet RECEIVED Section A -A Notes: 1. Drop inlet sediment bathers are to be used for small, nearly level drainage areas (less Q 2019 than 5%) �N v 2. Excavate a basin of sohlcmM size adjacent to the drop inlet 3. The top of the structure (ponding height) must be well bolOw the ground elevation downslope to prevent runoff from bypassing the Inlet A w nrl. ry dike may be CITY OF FEDERAL. WAY necessary on the downslope side of the structure. WMM NDELOPkA' 1 I 1UY YVE 4 BLOCK AND GRAVEL FILTER - ` KaowWhel's 6CIOW. Call Call before you dig: ad Z J J_ -- a ~ Q CD D I1J �W C ll U W rG Z LU w W U LIl ao Of GO a a C0 / 1 i 1 ;••T.0/ OFO9 BRICKED IN FLC RESTRICTI� APPROX.2 BRICKED IN. 04o — Ili OF BYPASSISECONDARY FLOW PATH A A PROPOSED TEMPORARY FLOW DAM - SECTION A -A N.T.S. oad ��5t1t�9R Install driveway culvert if there is a roadside ditch present q• _ 6" quarry spells Geotextile Noles: 1. Driveway shall meet 12" minimum thickness Ahe tgqultomenls of the permitting agency. 2. It is recommended that the entrance be crowned so that runoff drains off the pad BYPASSISECONDARY FLOW PATH 100' min. OV'\' �15'min. Provide full width of ingresslegress area CONSTRUCTION ENTRANCE (9 N.T.S. A SECONDARY FLOW Q FLOW DIRECTION 2 PROPOSED TEMPORARY FLOW DAM -PLAN VIEW N.T.S. OHWM (VARIES) 06 W — Z J � U ----------J--- Ala}i H J I EXISTING STREAM Q ` CHANNEL M w F- Q CS VEL aACKFtLL FOR PIPE ZONE ~ PROPOSED 36" HDPE OR AHDARO APPROVED EQUIVALENT SPECtFiCATlO 5 N 9.01.12(3). oc STORM PIPE. DEPTH VARIES 0. II ,,�� `` 4 TYPICAL STREAM CROSS SECTION - PROPOLO 18 " 2019 N.T.S. 1 ilGCITY OF FEDERAL. WAY „ calla a 00MMUNr Y DEVELOPMENT C08 08 .109 SITE SPECIFIC DATA PROJECT NUMBER 7616 PROJECT NAME Ms! AIT3i 7Ai1TW� ! WP r m AsOXCr LDGUAkM STAmroOD, WA STRICTURE ID iw I TREATMENT REWIRED VOUME WED (CIS) FLOW B45ED (CIS] 22 TR&PfOir NCL AVAILABLE (FT) N/A PEAK BYPASS REDOIRID (Cif - ! ARA(r &E OFNNE PIPE DATA LE. AATERAL DIAMETER INLET PIPE J/895 NUN 12' OURfT PIPE J17.95 N/K 12' PRETREATMENT BMRLTRA77ON DISCHARGE RAIL ELLYA77ON JSSoo M5.00 J5500 SURFACE LOAD PEDESTRIAW PEDESTRIAN PEDESTRIAN FRAME h CLAM 2 EA OJT" '? EA 30' X 48' 014' WETLNOMEOM VOLUME (GY) 12B0 KRAHDME014 DEANERY METHOD PER CONTRACT ORIFICE SIzE (DSL RdYh4Sf 0145' NOTES fUM/NARY, NOT FLl4 CONSTRUCTION A TOTAL HAWS VAULTS IS NEEDED 70 PROVIDE THE REQUIRED WIT FLOW. INSTALLATION NOTES 1 CONTRACTOR TV PROVDE ALL LABOR, EQUIPMENT, MATERIALS AND INCIDENTALS REQUIRED 70 OFILA4O AND INSTALL THE SYS7EW AND APPURTENANCES IN ACCORDANCE WIN THIS DR407NG AND THE MANUFACTURERS SPECIFUR04 UNLESS OTHERWISE STATED IN MNUFACTURM CONTRAC, 2. UNIT MUST BE INSTALLED ON LEVEL 84SE. MANUFACTURER RECOMMENDS A MINIMUM 6' LEVEL ROCK BASE UNLESS SPECIFIED BY THE PROJECT ENGINEER CONTRACTOR 6 RESPONSIBLE 70 WR r PROTECT ENGNEERS RECOMMENDED WE SPECIFICATIONS. J ALL PIPES MUST BE FLUSH WIN INSIDE SURFACE OF CONCRETE (rgF['S 0WWMJX A DeZ7It4iT FLUCN4MR /R00.P. ALL G1P5 OF OUrROW PIPE AROUND PIPES SHALL BE SEALED WATER TIGHT WITH A NON -SHRINK MIT PER MNUFACWATS STANDARD CONNECTION DETAIL AND SNAIL. MEET OR EXCEED REGIONAL PIPE CONNECTION STANDARDS. A. CONTRACTOR TO SUPPLY AND INSTALL ALL EXTERNAL CONNECTING PIPES. 5. CONTRACTOR RESPONSIBLE FOR AISTALL417ON OF ALL RISERS, Mt V,M A40 WMNX. CD,V,AWM 9 TO OW AIL AMITIES W BVCJFS rO OTC" E55 0*9'Ev 5mlF uMYTCIXU oR4hr5E 6. DRIP OR SPRAY IRRIG47ION REOUIREO ON ALL UNIIS WITH VECETATION. GENERAL NOTES 1. WNUFAC7URER TO PROVIDE ALL M47ERIALS UNZS OIHER7WSE NOTED. 2. ALL OM EEMALXM SPEL'F,C,MAY6 AD>pMLEa5 ARE SUDIECr 70 C1AN6L FL1F PR0.£$J' $ j('P10 pOpIVTD$ ffCtllr E. o DIMENSIONS WEIGHTS AND ACCESSORIES PLEASE CONTACT .MANUFACTURER. SITE SPECIFIC DATA PROJECT NUMBER I7s16 maw NAME 3J67h/HW*9 rthl t WD F PROJECT LOCATION SIPAN= of ST►xRbrE Q UNIT J TRLAIMCNI �n�o VOLUME BASED amm III M.BA' BISf'1i A7V 7.2 77MANENT HCL AVAILABLE R N/A ASW LFMZ L,-OVAS0 An - IF APPLIGIBLE OFFLINE PIPE DATA I.E. N47ERML DAMEIER INLET PIPE J48.95 N/K T2' OUTLET PIPE 34.95 N/K 12- PRETREATMENT BMLTRATIW DISCHARGE RIM ELEVATION 35500 MOD 355.00 SURFACE LOAD PEDESTRIAN PEDESTRIAN PEDESTRIAN FRAME k COVER 2 EA IJO' ,2 EA JO' x A8' 024- WE2WDUED14 VRUldE (Cl 12.80 Wl7I.MARML7[ DELIVERY NERpO PER CONTRACI ORIFICE 512E LVKA INCHES) OJ45' NOTES: PREUMOMIRY. NOT FOR CONSIRUC/ION, A AL OF T �WWS VAULTS 15 NEEDED 70 PROVIDE THE REQUIRED WO FLOW. INSTALLATION NOTES I CONTRACTOR 70 PROVIDE ALL UBOR EQUIPMENT, MATERIALS AND IAtVEMALS REOU490 TO OFFLOAD AND INSTALL THE SYSTEM AND APPURTENANCES IN ACCORDANCE WAIN THIS DRAW9NG AND THE MANUFACTURERS SPSOFM IOW5 UNLESS ONERMS£ STATED IN MANUFACTURERS CONTACT. 2 UNT MUST BE INSTALLED ON LEVEL BASE. MANUFACTURER RECOMMENDS A MUWMUM 6- LEKI. ROCK BASE LAILM SPECIFIED BY THE PROJECT ENGINEER. CONTRACTOR IS RESPONSIBLE TO VERIFY PROJECT ENGINEERS REWUMENDED LASE SPfC/FLGARONS J ALL PIPES AWF BE FLUSH WITH INSIDE SURFACE OF CONCRETE. (TYPES CpOMpi AVTRYiC BL}TA'47 FLUSH). RNERT OF OUTFLOW PIPE ARTIST BE 3USH �N7' C77A4NA;8 CHAMBER POOR ALL GIPS AROUND PIPES SHALL BE SMED WATER 77W WIN A NON -SHRINK GROUT PER MANUFACTURERS SIANDARD OMWCT70N OETAIL AND AWL MEET OR EXCEED REGIONAL PIPE CONNECTION STANDARDS 0. CONTRACTOR TO SUPPLY AND INSTALL ALL EXTERNAL CONNECTING PIPES. 5. CONTRACTOR REVVNSG E FOR INSTALLATION OF ALL RISERS MANHOLES AND )N.TH S CDMCIU# 70 GROVNE AAM OM3 AV HATCHES TO MATCH TMdd'j(•J $WA:r UNLESS SPFP'Y9 DTMI'RAM•r 8 DRIP OR SPRAY kWr4WN REWIRED ON ALL UNITS WH VEGETATION. GENERAL NOTES I. MtML4YACRAPLP NEW ALL LATFR{IL$ U/,A.E$S ONERW75E NOiEO. 2. ALL CMtd7 l-1 AEdpMg1N5 3CCa'K.41A5A� Ary) GPACNTES ARE SUB/fC7 IO ,0 A FCT9 PALMECT CWA F MANUFACTURER ANU1T tC[.edG EXACT D/M£NS/UIIS WEXI/IS N,O AeYrestrss PLEASE CONTACT MANUFACTURER. EA PLAN VItW ELEVATION VIEW PLAN VIEW ELEVATION VIEW LEFT END VIEW RIGHT END VIEW LEFT END VIEW RIGHT END VIEW SITE SPECIFIC DATA PRO'Ect NUlw 7616 PRa ECT NAME JJ6Ill/NWY99 XNTL"E d NO FALYIN' PROECT LOCA77ON I STANWWD. WA STRLCTLdRE A w 7 MARgXF W&ARED �LtiE WED (CIS] I FLOW Sum M 7.2 TFEANENT NGL AVNUBLE (FT) N/A PEAL BYPASS REDU%W (DI"A1 - IFAPHORE OFFLINE PIPE DATA LE K1/ERW. DIAMETER INLET PIPE JIB.95 N/K 12' WILET PIP£ J17.95 NUN V, PRETREATMENT MOFXM4170N D/SaWGE RIM ELEVATION 355.00 355W J5500 640 SURFACE L PEDESTRIAN PEDESTRIAN PEDESTRIAN .FIAMf k COVER 1 FA OJO' 2 EA JD'x !8' 01A' mcaw [/vc A VOLUME ECp 12.80 WE'8p6FMM(Am WV [?Y Avw PER COMPACT Dance SIZE COA Aodm aJAS' Nu ' PRELAINFRT NOT FOR CMMuCTIOIA 'A TOTAL MAWS VAULTS IS NEEDED TO PROVIDE THE REQUIRED WO FLOW. INSTALLATION NOTES I CONTRACTOR TO PROVIDE ALL LABOR, EQUIPMENT,, U41TRMLS AND INCIDENTALS REQUIRED TO OFFLOAD AND INSTALL THE SYSTEM AND APPURMIWES IN ACCORDANCE WIN THIS DRAWING AND THE MANUFACTURERS SPEGf704770NS, UNLESS OTHFIWYIS£ STATED IN MANUFACTURERS CONTRACT 2 UNIT MUST BE INSTALLED QN LEVEL BASE. MANUFACTURER RECOMMENDS A MINIMUM 5' LEVEL ROCK BASE UNLESS SPEOREO BY THE PROECT ENGINEER. CONTRACTOR IS RESPONSIBLE TO VERIFY PROJECT ENGINEERS RECOMMENDED lASE SPECIFMATLWh'. S ALL PIPES MUST BE FLUSH WTN INSIDE SURFACE OF CONCRETE =lEHJI GSOAM1'LF FLCHAMBERIFLOOR. NVERT O ALL GAPS F OU7POW PIPE AROUND PIPES SHALL BE SEALED WATER TIGHT WIN A NON-SNRINK GROUT PER MANUFACTURERS STANDARD CONNECTION DETAIL AND SHALL MET OR EXCEED REGIONAL PIPE CONNECTION STANDARDS. A. CONTRACTOR TO SUPPLY AND INSTALL ALL VORNAL CONNECTING PIPES 5 CONTRACTOR RESPONSIBLE MR INSTALLATION OF ALL RISERS, MAWOUM Alp AAIfAlS rMl%C707 TO MT AU MVMaES 40 LAroE: W WWILk "03yft $lAfACE L&-''= 5PECt'TMW 6WATV- 6. DRIP OR SPRAY IRRIGATION REQUIRED ON ALL UNITS WITH VEGETATION. GENERAL NOTES 2 LAN9OWV S 7P TLY LEOLFC2' Mel MATFPI.W URA' W AFK�P't6E RATED 2. TO 06 D�YI lot dFit l -W 5F£CJ7 OM fA Al <J'X2S ARE SC9SCr EI AND AC lot EF7.ES4 E CONTACT T ANdcs TUBER Y AcMCT O'd'KSG." WE1CN75 AND ACCESSORIES PLEASE CONTACT MANUFACTURER. PLAN VIEW - ELEVATION VIEW LEFT END VIEW RIGHT END VIEW V/ J LLI - ZJ W z M LL Z O F C C7 M � a w � N O is W gym' - z U RECEIVED W o W 00. a me a Fl L i JAN 18 2019 V (\/�'�O V R d CITY QF FEDERAL WAY Y 1-wc l=h I dL3 COMMUN Y DEVELOPMENT orm 09 oF09 6c1ue19L+ \�`1�; \t Lll �� nl a r6- .; �s3 ~� er --;tC • Ci% I - e ! ! ♦`tt� li ILL.' ,� .. 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OFF. QM II { gRRTt �•1+0.70 1 t I I l I I I i ' EXISTING GRADE m I 1 < _~ -�_ PROPOSED GRADE Z -�-_ l I \ 20 LF OF 1Y HOPE Lj�g IE oul•%E.E2ttW IL n•31! '(gJ 12• HOPE PPES i RECEIVED 3 m � 22 LF OF 72• HpPE @fAB% 1 I u' � I I �? AZ a[.Y1.73 (afi-tlV 4 tE:,•3H,T3pSN! � lYc Ns9�+?SIIrxE1 - — . g Iw I w w JAN 1 2019 20+00so r{11r5j 21+00 21+50 M II.,Emn.S FEDERAL W w:helo DGIN r ,l,EYDl+1rIrrryV I.e..,n,,.sotlr Nt COMMUNITY DEVELOPMENT Call beforeyoutfly �. n•3�2471+T Inrl 0 z O 0 W J LL L LU Z-j 0 J Q _ U- 0 F- F Z 1■-i = < g Q y M = IL Cr7 LU a n rn LU � s Q J = Q Y w > J W H H QcyZ � 172l� Z 0 W 111 Of o d a C04 04 .F09