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95-103161 (2) SUMMARY SHEET ADDRESS: 4b 7 --2—'1 PROJECT NAME: "/f /�/b Cross References/file #'s: EP (GLD F/L Parcel Number(s): Z_U Z-l C? qo5 7 Section, Township & Range: 2 — Project Description: G(.J 6c-ei Owner- Applicant: C. l� 610' 'P. .- + 7/1' .5 6.6 I_ 1 FILESISTTUSSHT 17 I"7 w�"D - f PN . zo z.ioi —1057 y % R S t o - -ra tlofl Of - .-.� , Descr p . e only neighborhood type city park in- AFFIDAVIT OF PUBLICATION cluding siting of two historically signifi- cant cabins, refurbishing one existing barn,construction.of seven stall park- No. F21 ing area, landscaping, loop and spur trail intended to connect with adjacent Hylebos State Park. Proponent:BARBARA SIMPSON STATE OF WASHINGTON) Location:407 S.348TH ST. COUNTY OF KING )ss. Lead Agency:City of Federal Way The Responsible Official of the City of I,Karla Glass,being first duly sworn on oath deposes and says: Federal Way hereby makes the fol- That she is the Accounts Receivable Manager of The Federal lowing decision based upon impacts Way News,a bi-weekly newspaper which is now and at all times identified in the environmental check- herein mentioned has been published and printed in an office list, the Federal Way Comprehensive Plan,the"Final Staff Evaluatiorrfor En- maintained at the place of publication at Federal Way, King vironmental Checklist; Application No. County,Washington,that by order of the Superior Court of the SEP95-0028"for this action, and other State of Washington in and for King County, said newspaper is municipal policies, plans, rules, and now and at all times mentioned herein has been approved as a regulations designated as a basis for legal newspaper for the publication of any advertisement,notice, exercise of substantive authority under summons, report, proceedings, or other official document the Washington State Environmental required by law to be published, that said newspaper was Policy Act Rules pursuant to R.C.W. published regularly at least once each week, in the English 43.21 C.060. The lead agency for this proposal has language,as a newspaper of general circulation in Federal Way, determined that it does not have a King County, Washington, at the time of application to the probable significant adverse impact on aforementioned Superior Court for approval as a legal newspaper, the environment, and an Environmen- and was so published for at least six months prior to the date of tal Impact Statement (EIS), is not re- said publication,and is now and at all times mentioned herein has quired under R.C.W. 43.21C•032(2)(c)• been so published. This decision was made after review of That the annexed is a true copy of a Notice by the City a completed environmental checklist of Federal Way for an Environmental DNS for city park; No. and other information on file with the SEP95-0028 lead agency. This information is avail} able to the public on request. This DNS is issued under WAC 197 11-340(2);the lead agency will not act on this proposal for 15 days from the as it was published in regular issues of said newspapers once each date of issuance.,Comments must be week for a submitted by 5:00 p.m.on 1/18)96. period of one consecutive week(s),commencing Unless modified by the City, this de- termination will become final following on the 10th day of January , 1996,and ending the above Comment deadline.Any per- son aggrieved of the City's final deter- on the 10th day of January , 1996,both dates mination may file an appeal with the City within 14 days o'f the above com- ment deadline. inclusive,and that said newspaper was regularly distributed to its Contact Person: Bill Kingman;Asso- subscribers and as a newspaper of general circulation during all ciate Planner of said period. Phone:661-4000 Responsible Official: Gregory D. That the full amount of the fee charged for the Moore,AICP foregoing publication is the sum of$59.50 . Position/Title: Director of Commu- Q oAy Development Services Address: 33530n First Way South, Federal Way,WA 98003 Subscribed and sworn to before me this 11th day Date issued:01/03/96 of January 1996. Signature: /s/ -Kathy McClungfor Gregory D.Moore Al 1 Published in the Federal Way News on January 10,1996 F21 No Public in and State of Washington Residi at Seattle. My commission expires 5/30/99. • RECEIVED JAN1219 MANAGE. CITY OP r_, ,,L wVM ............. ....:.I....).).f:....)....:)..i.. .1).).>:::.........s.7.s' .`7>7):)- _ .......J.>.>.`.`� .575.:.]>..$)w`7)<kISUU U:Ji)is is2>t'ail]l]21i1:•ts.sts:S:r..:fisif:5isi1»stiilWfi+lAfifi4Ytt1{tl]t1.tiUifrilariTlriH1 • CITY OF G •_ • (206)661-4000 N)\) P1.5/r33530 1ST WAY SOUTH FEDERAL WAY,WA 98003-6210 ENVIRONMENTAL DETERMINATION OF NON-SIGNIFICANCE APPLICATION NO. : SEP95-0028 Description of Proposal: Day use only neighborhood type city park including siting of two historically significant cabins, refurbishing one existing barn, construction of seven stall parking area, landscaping, loop and spur trail intended to connect with adjacent Hylebos State Park. Proponent: BARBARA SIMPSON Location: 407 S 348TH ST Lead Agency: City of Federal Way The Responsible Official of the City of Federal Way hereby makes the following decision based upon impacts identified in the environmental checklist, the Federal Way Comprehensive Plan, the "Final Staff Evaluation for Environmental Checklist; Application No. SEP95-0028" for this action, and other municipal policies, plans, rules, and regulations designated as a basis for exercise of substantive authority under the Washington State Environmental Policy Act Rules pursuant to R.C.W. 43 . 21C. 060. The lead agency for this proposal has determined that it does not have probable significant adverse impact on the environment, and an Environmental Impact Statement (EIS) is not required under R.C.W. 43 . 21C. 032 (2) (c) . This decision was made after review of a completed environmental checklist and other information on file with the lead agency. This information is available to the public on request. This DNS is issued under WAC 197-11-340 (2) ; the lead agency wila not act on this proposal for 15 days from the date of issuance. Comments must be submitted by 5: 00 p.m. on 01/18/96. Unless modified by the City, this determination will become final following the above comment deadline. Any person aggrieved of the City' s final determination may file an appeal with the City within 14 days of the above comment deadline. Contact Person: Bill Kingman Phone: 661-4000 Associate Planner Responsible Official: Gregory D. Moore, AICP Position/Title: Director of Community Development Services Address: 33530 First Way South, Federal Way, WA 98003 Date issued: 01/03/96 Signature: A'k-e,Q AFFIDAVIT OF DISTRIBUTION I L_ i;ec, , r- hereby declare, under penalty of perjury of the laws of the State of Washington, that: ❑ Notice of Application 0 Notice of Proposed Land Use Action ❑ Notice of Action 0 Notice of Public Meeting ❑ Notice of Application for Shoreline 0 Notice of Public Land Use Hearing Management Permit ❑ Notice of Determination of Significance 0 Shoreline Management Permit ❑ Notice of Determination of Non- 0 Official Notice Significance and Scoping Notice 1 Notice of Environmental Determination ❑Other of Non-Significance (SEPA) ❑ Notice of Environmental Mitigated ❑Other Determination of Non-Significance (SEPA) w. • maile i/faxed/posted to/at each of following addresses (see attached) on /-0 , 1996. Project Name xl. ,e (.- -3-, ?,..ik.2 File Number(s) -- 5� -Cori 8 Signature ice..---' 'T Date / - Ar IDAv1.Doc REVISED 1/3/96 I .- ,.,rcebb.x,:,u.,u(1aa:xia,ut,:.tuauraisaFasisira_wxuizua.r xxauu..x.»a.a.2...,.m..+au+s.:.,nso....,..,.o..r i. fr CITY OF G • (206)661-4000 \):\ 1:17!'r 33530 1ST WAY SOUTH FEDERAL WAY,WA 98003-6210 ENVIRONMENTAL DETERMINATION OF NON-SIGNIFICANCE APPLICATION NO. : SEP95-0028 Description of Proposal: Day use only neighborhood type city park including siting of two historically significant cabins, refurbishing one existing barn, construction of seven stall parking area, landscaping, loop and spur trail intended to connect with adjacent Hylebos State Park. Proponent: BARBARA SIMPSON Location: 407 S 348TH ST Lead Agency: City of Federal Way The Responsible Official of the City of Federal Way hereby makes the following decision based upon impacts identified in the environmental checklist, the Federal Way Comprehensive Plan, the "Final Staff Evaluation for Environmental Checklist; Application No. SEP95-0028" for this action, and other municipal policies, plans, rules, and regulations designated as a basis for exercise of substantive authority under the Washington State Environmental Policy Act Rules pursuant to R.C.W. 43 . 21C. 060. The lead agency for this proposal has determined that it does not have probable significant adverse impact on the environment, and an Environmental Impact Statement (EIS) is not required under R.C.W. 43 . 21C. 032 (2) (c) . This decision was made after review of a completed environmental checklist and other information on file with the lead agency. This information is available to the public on request. This DNS is issued under WAC 197-11-340 (2) ; the lead agency wil4 not act on this proposal for 15 days from the date of issuance. Comments must be submitted by 5: 00 p.m. on 01/18/96. Unless modified by the City, this determination will become final following the above comment deadline. Any person aggrieved of the City' s final determination may file an appeal with the City within 14 days of the above comment deadline. Contact Person: Bill Kingman Phone: 661-4000 Associate Planner Responsible Official: Gregory D. Moore, AICP Position/Title: Director of Community Development Services Address: 33530 First Way South, Federal Way, WA 98003 Date issued: 01/03/96 Signature: ,ce,e.". AFT )AVIA' OF :#ISTA 3UTION I 14\kcA.s.k...40 �"�� hereby declare, under penal of perjury laws of the State of Washington, that: t3' P rJury of the ❑ Notice of Application 0 Notice of Proposed Land Use Action ❑ Notice of Action 0 Notice of Public Meeting ❑ Notice of Application for Shoreline 0 Notice of Public Land Use Management Permit Hearing ❑Notice of Determination of Significance ❑ Shoreline Management Permit ❑ Notice of Determination of Non- 0 Official Notice Significance and Scoping Notice Notice of Environmental Determination ❑Other of Non-Significance (SEPA) ❑ Notice of Environmental Mitigated ❑Other • Determination of Non-Significance (SEPA) was mailed / faxed / posted to/at each of following addresses (see attached list) on , 1996. Project Name rl k p File Number(s) -J - Signature -r? Date AI FtDAvr.Doc REVISED 1/4/95 The City Of Federal Way posted the attached proposal to the following locations: The Federal Way Regional Library 34200 1st Way South Federal Way, WA 98003 Federal Way Library 848 South 320th Street Federal Way, WA 98003 Federal Way City Hall (Bulliten Board) 33530 1st Way South Federal Way, WA 98003 CIrV DA • -. -. _ V n .7° 33630 1ST WOW SOUTH FEc RAL.WAY',WAg3pC0.�•.6626 0 Mayer -- - Mary daces Council Members Jack I ovey City Manager Hope S1Aer Kenneth El. NYbarg, Ikon (Matz Michael Park Mahlon 'Skip^ Priest .Philip Watkins FAX TRANSMITTAL. mr—nmc RANDLTM / T / 47 6 L ATL7NIDER OFT PAGES (Including Memo Shcat) 7� FRolvr..; _ ?› 1 crt� lna( es-7/9/i OFFICE oP': _ L.._r3xiltr) [-f'c ' RE: �Sr_ s re.C-ot� s�r� y :_f"► 1.� arq».�• t 0 r / 11"‘-, Al-"AO e"NP1 iry.a `Yo c.�.. 04-p-i A9 t_-'f T G tF F'4c 4 i__.I C.J4-i 7 e N. -r HJ4n)K If there are any problems donna this transmission, please call 661-4000 and ask for TRANSMISSION REPORT THIS DOCUMENT (REDUCED SAMPLE ABOVE) WAS SENT ** COUNT ** # 3 *** SEND *** NO REMOTE STATION I. D. START TIME DURATION #PAGES " COMMENT 1 2062412776 1- 4-96 13: 12 2 '04" 3 TOTAL 0:02' 04" 3 XEROX TELECOPIER 7020 CITY OF FEDERAL WAY FINAL STAFF EVALUATION FOR ENVIRONMENTAL CHECKLIST APPLICATION NO. SEP95-0028 December 29, 1995 Project Name: Historic Cabins City Park Applicant: City of Federal Way Contact: Barbara Simpson, Landscape Architect, City of Federal Way, 33530 1st Way South, Federal Way, WA 98003, Phone: 661-4048 Location: 407 South 348th Street S-T-R: west 1/2 of Section 20, Township 21, Range 4 East, W.M. Parcel Size: 4.1 acres Type of Action: SEPA Review (Process III land use application will be filed at a later date as funding becomes available) Proposal: Development of a day use only neighborhood type city park including siting of two historically significant cabins, refurbishing one existing barn, construction of seven stall parking area, landscaping, loop and spur trail indented to connect with adjacent Hylebos State Park. Existing Zoning: RS 35.0 (Single Family Residential) Comprehensive Plan Designation: Parks and Open Space NOTE: Technical reports and attachments referenced below may not be attached to all copies of this decision. Copies of reports, attachments or other documents may be reviewed and/or obtained by contacting Bill Kingman, AICP, Associate Planner, Department of Community Development, 33530 First Way South, Federal Way, Washington, 98003, phone: 661-4110. A. Background: The proposal is to develop a day use only neighborhood type city park including siting of two historically significant cabins, refurbishing one existing barn, construction of seven stall parking area, landscaping, loop and spur trail indented to connect with adjacent Hylebos State Park. Staff analysis is based on the submitted geotechnical investigation dated October 25, 1993, draft wetland delineation dated August 1994, partial topographic survey (no date), significant tree survey (no date), Federal Way Public Works memos regarding parking 1 Y , requirements dated March 16 and 24, 1994, Technical Information Report dated August 8, 1995 and SEPA checklist signed November 24, 1995. B. Environmental Elements: 1. Earth: A geotechnical investigation dated October 25, 1993 and temporary erosion sedimentation control plan (no date) were submitted for city analysis. The investigation states onsite soil is suitable for building foundations. Grading activities are regulated by the City's Land Surface Modification policy (FWCC Section 22-1091). A temporary erosion control and sedimentation plan will be approved by the city prior to commencement of onsite construction related to this proposal. Six percent lot coverage is proposed. 2. Air: Short term impacts to air quality will occur during construction and paving operations. Longer term impacts due to vehicle emissions will vary in level according to the amount of traffic generated in the future by the proposal. Compliance with local, state and federal air quality standards will provide sufficient mitigation of these potential impacts. In addition, retention and enhancement of on-site vegetation and landscaping will provide filtering of suspended particulates. 3. Water: Surface Water: A draft wetland delineation dated August 1994 was submitted for city analysis. The delineation indicates a portion of Hylebos Wetland #2418 is located on the easterly portion of the site. Additionally, Hylebos Creek is located east of the subject site. Minor work, i.e., eight foot wide crushed rock pedestrian trail, 100 sf. concrete on-grade slab for pedestrian overlook and 12 inch biofiltration swale outflow pipe, is proposed within 100 feet of the identified wetland edge. Minor improvements within wetland setbacks may be allowed via Process I review pursuant to FWCC Section 22-1359(c). Final decision on the proposed wetland setback intrusions will be made with the required Process III application for the city park. No work is proposed within the wetland or stream. For reference, Federal Way City Code (FWCC) establishes a 100 foot setback for wetlands and major streams. A Technical Information Report dated August 8, 1995 was submitted for city analysis. The report states surface water generated by the parking lot will be collected, treated and discharged to the wetland via a oil/water separator and biofiltration swale constructed to the design requirements of the King County Surface Water Design Manual (KCSWDM). Storm water runoff control is not required by the KCSWDM due to the limited amount of proposed impervious surface area. Surface water generated by the proposal is classified as a negligible peak runoff rate increase. Final analysis of the Technical Information Report will occur with review of the construction permit for the proposal. Ground Water: The site is located inside the Redondo Milton Channel Aquifer. The proposal will provide ground water recharge opportunities from surface water discharge to the adjacent wetland and major stream. No ground water will be withdrawn by the proposal. 2 •. 4. Plants: A significant tree survey (no date) was submitted for city analysis. Based on the survey no significant trees, as defined by FWCC Section 22-1, are located on the site. All natural vegetation shall be retained on the site except that located within areas for construction of park improvements. All clearing areas shall be clearly shown on the engineering plans and be approved by the city prior to commencement of any clearing. 5. Animals: Concur with checklist. 6. Energy and Natural Resources: Concur with checklist. 7. Environmental Health: Concur with checklist. 8. Land and Shoreline Use: Concur with checklist. 9. Housing: Concur with checklist. 10. Aesthetics: Concur with checklist. 11. Light and Glare: Concur with checklist. 12. Recreation: Proposed pedestrian trail is intended to connect to the Hylebos State Park pedestrian trail system at a undetermined date. Details will be examined with the related Process III application. 13. Historic and Cultural Presentation: Concur with checklist. 14. Transportation: Federal Way Public Works Traffic Division memos dated March 16 and 24, 1994 were submitted for city review. The memos establish minimum number of parking stalls necessary for the proposal. Based on a analysis of the proposal seven parking stalls are necessary. Seven stalls are proposed. 15. Public Services: Impacts to the Police Department will be negligible as the park is intended for passive day use only and all structures will be secured such that access into the building will not be encouraged. Restrooms will not be provided as the park is intended for day use only by the immediate neighborhood. Trash enclosures details and locations should be included with the Process III application. 16. Utilities: Concur with checklist. C. Conclusion: The proposal can be found to not have a probable significant adverse impact on the environment. This decision is based upon the submitted environmental checklist, attachments, and the above 'FINAL STAFF EVALUATION FOR ENVIRONMENTAL CHECKLIST 3 A APPLICATION NO. SEP95-0028', and are supported by plans, policies and regulations formally adopted by the City for the exercise of substantive authority under SEPA to approve, condition or deny proposed actions. The City reserves the right to review any future revisions or alterations to the site or to the proposal in order to determine the environmental significance or non-significance of the project at that point in time. Prepared by: Bill Kingman, AICP, Associate PlannerVV Date: December 29, 1995 SEP9528.ENV 4 CITY OF FEDERAL WAY DEPARTMENT OF COMMUNITY DEVELOPMENT SERVICES MEMORANDUM DATE: December 7, 1995 TO: Erin Easterly, Eloise Kruger FROM: Bill Kingman, Associate Planner, 661-4110 PLEASE RESPOND BY: December 14, 1995 ********************************************************************** FILE NUMBER: SEP95-0028 PROJECT NAME: Historic Cabins City Park PROJECT ADDRESS: 407 South 348th Street PROJECT DESCRIPTION: New city park PROJECT CONTACT: Barbara Simpson, City of Federal Way, Federal Way, WA 98003, Phone: 661-4048 NOTE: The attached drawings are provided to identify potential adverse environmental impacts which are beyond the scope of city code requirements. Necessary land use and building permit applications will be filed at a late date. I'll route a copy of these applications to you as they become available. SEP9528.M I 5 1 D---- $2 SPa- cic; ---- 14 sir, LIP cc; --- o vt-7--' (1? ---6(..(c el-re-P c 0--x ---' s, g (Am 2 cx it of,,) r(A)c...c.- z o,— , .,, , _, ) .---------------------------- ----___ .---- ----..,..-..., 5AP (IS — °z(- tr-e,g6.::-A.0• -, 5-x. vAiLiAto C .-e-- akoL cr‹.-, -- 1--c7- Zil ,ecry Lt.j(or„ Ir.:cit..) c p, (TA c'IL,. 6rEeNt,,(._vt-7t---T) L.-4ie( < r A, yc*******$******** .*** *****3****:C*4 r**4***3fc*{c: ;c>;cac**iY*** **:c***acic;c**ac,c;cic►',c ' *.' BATCH NUMBER: UU COMMENTS *= CUSTOMER. NAME . CITYOFFEDERAL WAY ' c0-4N, ccr( i * . 202104-9014-02 " 202104-9014-02 PUGET . SOUND POWER C LIGHT : S-0480 PUGET SOUND POWER C LIGHT • S-0480 PUGET. POWER 'BLOG PUGET POWER BLDG BELLEVUEWA 98004 BELLEVUE WA 98004 ' ' 202104-9015-01: 202104-9015-01 . ' MARCKXFRANCIS L C1075 2 MARCKX . FRANCIS L C1075 34915 4TH ..AVE S' 34915 4TH - AVE S FEDERAL WAY- WA 98003 FEDERAL` WAY. WA 98003 �4 202104-9020-04 202104-9020-04 • GORDON GARYE 089999 GORDONGARY E 089999 E 34904 4TH; AVE S 34904 4TH AVE S FEDERAL= WAY;'.WA - 98003 FEDERAL WAY WA 98003 202104-9034-08-• 202104-9034-08 CITY;OF FEDERAL WAY. 399700 CITY : OF - FEDERAL WAY 399700 33530' 1ST WAY S 33530 1ST WAY S FEDERAL' WAY' WA 98003 FEDERAL WAY WA 98003 202104-9049-01 ` 202104-9049-01 LA PETITE ACADEMY. INC 3N1766 LA PETITE ACADEMY INC 3N1766 14 CORPORATE WOODS 14 CORPORATE WOODS 8717 W. 110TH ST 0300 8717 W 110TH ST i1300 OVERLAND PARK KS 662.10 OVERL AND..PARK KS 66210 • :.r 202104-9054-03 i 202104-9054-03 STATE OF' WASHINGTON 667777 I STATE 0- - ASHINGTON 667777 PARK & ".RECREATION j PARK & REATION ' 7150`:CLEARWATERfLANE 7150 CLEARWATER LANE • OLYMPIA WA,:-. 98504 OLYMPIA WA 98504 i 202104-9062-03 202104-9062-03 FEDERALWAY 209999 ! FEDERAL WAY 209999 33530 1ST : WY.:: S 33530 1ST WY S . FEDERAL" WAYWA< 98003 FEDERAL WAY' WA 98003 1 202104-9156-00 202104-9156-00 • CITYOF FEDERAL :WAY ' : 349999 CITY . OF FEDERAL WAY 349999 I 33530' 1ST`WAY 'S 33530 1ST WAY S FEDERAL" WA` WA:. 98003 FEDERAL .WAY, WA 98003 202104-9178-04: 202104-9178-04 JARSTAD JOHN S+PATRICIA A 2N9999 JARSTAD JOHN S+PATRICIA A 2N9999 � 34509 9TH AVE • S 1101 34509 9TH AYE S 0101 FEDERALWAY: WA 98003 FEDERAL WAY WA 98003 276230-0010-06 276230-0010-06 BROWN` RAYMOND E+CHERI <A 949999 BROWN RAYMOND E+CHERI A 949999 34722' 4TH PL 'S 34722'° 4TH PL S FEDERAL .WAY:WA 98003 FEDERAL': WAY WA 98003 I 276230-0020-04 276230-0020-04 + FINNESSY JOHN C ' . 059999 L FINNESSY JOHN. C 059999 34716° 4TH. PL S j 34716 4TH PL S FEDERAL" WAY WA 98003 FEDERAL. WAY WA 98003 276230-0030-02 276230-0030-02 TURNERJIMMY:: C & . WANDA . L 442772 TURNER JIMMY C & WANDA L 442772 34708 4TH PL 'S 34708 4TH PL S FEDERAL :WAY : WA . 98003 FEDERAL WAY WA 98003 + 276230-0140-09 276230-0140-09 SUH EDWARD : Y . E0580 SUH EDWARD Y E0580 34711 4TH :PL. S 34711 4TH PL S •FEDERAL WAY' WA 98003 FEDERAL WAY WA 98003 i 276230-0150-06 276230-0150-06 RHODES MICHAEL S+CONNIE Y 079999 RHODES MICHAEL S+CONNIE Y 079999 34717 4TH PLACE SE 34717 4TH PLACE SE FEDERAL WAY: WA 98003 FEDERAL WAY WA 98003 i( 276230-016004 -- 276230-0160-04 HALE : ROYA C0479 HALE ROY A C0479 34723` 4TH ' PL S 34723 4TH PL S FEDERAL WAY WA 98003 FEDERAL WAY WA 98003 C 926480-0020-01 ` , 926480-0020-01 ST FARM MUTUAL• AUTO INS CO 130385 ST FARM MUTUAL AUTO INS CO 130385 C/O CORPORATE TX DEPT-RE C/O CORPORATE TX DEPT-RE ONE STATE FARM PLAZA ONE STATE FARM PLAZA BLOOMINGTON: IL' 61710 BLOOMINGTON IL 61710 TALASAEA CCASI .TANTS Fax=206-861-7549 Dec 8 '95 10!57 P.01/04 f; ■11 ► jTALASAEA CONSULTANTS PROJECT: TAL- z q FACSIMILE TRANSMISSION FORM DATE: •1 --$-"►S TIME: •'9:S-S IAA TOTAL NUMBER OF PAGES(INCLUDING HEADER): 4 RECEIVER NAME: Rm..I_ k-tWlogst� FIRM: C.tit' f•bSRfkt.. w�.4 FAX NUMBER_ SENDER NAME: Tonal A-'t,1444as1'1 FAX NUMBER: (206)861-7649 • REMARKS ocktOIr1A 1101111+4-b Tb bARElpiRA IF `{au O.1:r cMS - �rsiv w�4r Please corlteCt us at(206)861-7660 if there is a problem receiving this FAX. Resource'? Environmental Planning 1502f1 Buse Creek Hrnd Sortheart • wo dtnvliic,1Vrshin}lord 0802 • Bus:(20e)861.75.50 • Fax;(208)861,754B • rnis area in trove future,then a re-evaluation of the wetland boundary would be necessary. Development of the trail within the wetland buffer would be allowed since it is our understanding that pervious trails may be constructed in wetland buffers per the City of Federal Way Code. Pcmource Environmental Planning 1S(J21 Nor Creek Road Nurtheaz{t • Wtwdlnvilk:,W26hington 9Ai172 • Bus:mom Ar,1.7.ri5t1 • Fax,( )8(i1-7 S4A TALASAEA CONSULTANTS Fax:206-861-7549 Dec 8 '95 10:57 P.02/04 Barbara Simpson December 7, 1995 Page 2 Should you have any questions or require any additional information, please call me 0r BIII Shiels at(206)861-7550. Sincerely, TALASAEA CONSULTANTS 1 � r Jo Altmann Ecologist cc. Bill Kingman, City at Federal Way AttachmentB:field sketch TRLASREA CONSULTANTS Fax;205-861-7549 Dec 8 '95 10;58 P.03/04 .7_ e t • :....... ......., ......., 2 _..,„., .., b x , ., e i . Er \ --,_.,._. fc it .i l' 5^ A`` - n 1 Ittt i t' .w �1 • ,-..,., , , ..- ,''"...,_ „, 4, .'"... 0- iir ito , • ti .' ••, Al, 0 .4 ,,,,...,,,..... .........,,,L........ . -.,, ,,,,„ , _*. tiiiiii. , ,. .. I . ,... ''''1..% ' --.7% .*:: ' .'0. r •• ~r r t : _ is �•'�_ •� • . :' �" 1 VI' - - r si. i'd 'Nit I'' '•'7. 7,..',:c!..,...:. :,-,-s... •,-,,., -, .4. i p. ! . ... I......":141p__..e...._.“,_ !t , ; , .. .'s i 4'''1.....,,,',. in, .,..,.,, ........„... ,.„ „.. , ...„ „......_ . 0 . AB if , *,;-..:. gi 6.',-;, kik, i... .f.:':i-..,,..-,....,!v,-...-:. 1" . ,..40- 110- . -_ ---- 7 kitili) a f - . A , AP-- Mis u • I r:,gS1'r.''.1.;%....1....,.,:;,,' 1— ' e j, ,. , , 7. i t ��, 1,_ ---- . ' -1 { 1ll�{II .. 5 .• ,aim "'`• TF1ASAEA CONSULTANTS Fax!206-861-7549 Dec 8 '95 10!58 P.04/04 0.\\Fk)TALASAEA CONSULTANTS December 7, 1995 Barbara Simpson TAL-259 Landscape Architect, City of Federal Way 33530 1 st Way South Federal Way,WA 98003 REFERENCE: Historic Cabins Park,407 South 348th Street Wetland Delineation Review Dear Barbara: As we discussed on the phone, i have enclosed a field sketch(Attachment 1) showing the area of potential additional wetlands on the Historic Cabins Park site. This potential wetland area is located in the southeastern portion of the site and was discovered during a review of the Parametrix, Inc. (Parametrix)wetland delineation that I conducted on December 4, 1995. The remainder of the Parametrix delineation appeared to be accurate. Vegetation in the potential additional wetland area at the time of the field investigations consisted largely of pasture grasses including colonial bentgrass (Agrostis tenuis)and fescue(Festuce sp.), Soil borings taken throughout this area revealed hydric soils (10YR 4/1 with variable mottles)at a depth of 10 inches below the surface. Due to the disturbed nature of the site, it is possible that these soils are either imported hydric fill material or relic native soils from past wetter conditions_ Hydrology during the field investigations(conducted after a period of heavy rain)consisted of saturated soils at a depth of between 6 to 8 inches below the surface. Since it appears that this potential additional wetland area is not located within the area proposed for development of the park, it may not be necessary to re- evaluate the original Parametrix delineation. Development of the proposed state park connector trail to the south, however,may impact this potential wetland area. If development of this trail(or any other development)does occur within this area in the future, then a re-evaluation of the wetland boundary would be necessary. Development of the trail within the wetland buffer would be allowed since it is our understanding that pervious trails may be constructed in wetland buffers per the City of Federal Way code. Fttuurcr.'20 Lnviranmental Planning :5(12O 13cAr Creek Read Northeast • Woodinville,Washington i Si)72 • Bub;(10(])S61.755() • Fax:(2( )861.7w CITY OF FEDERAL WAY DEPARTMENT OF COMMUNITY DEVELOPMENT SERVICES MEMORANDUM DATE: December 7, 1995 TO: Erin Easterly, Eloise Kruger FROM: Bill Kingman, Associate Planner, 661-4110�% PLEASE RESPOND BY: December 14, 1995 *********** ****** ***************** :**** **************************** FILE NUMBER: SEP95-0028 PROJECT NAME: Historic Cabins City Park PROJECT ADDRESS: 407 South 348th Street PROJECT DESCRIPTION: New city park PROJECT CONTACT: Barbara Simpson, City of Federal Way, Federal Way, WA 98003, Phone: 661-4048 NOTE: The attached drawing is provided to identify potential adverse environmental impacts which are beyond the scope of city code requirements. Necessary land use and building permit applications will be filed at a late date. I'll route a copy of these applications to you as they become available. SEP9528.MI gTYOF G• PUBLIC WORKS EIZIEMEEL. MEMORANDUM vN) Ffi TO: Bill Kingman FROM: Julie Venn For Your Information Date: December 6, 1995 SUBJECT: Historic Cabins City Park - SEP95-0028 The Enviromental Checklist has been reviewed for the subject project and the following comments are provided: A. Environmental Checklist 1. Item B.3.c.1 - The applicant will also be installing an oil/water separator prior to the biofiltration swale. COMMUNITY DEVELOPMENT TECHNICAL REVIEW COMMITTEE AGENDA OF: December 7, 1995 ATTN: Mr. Bill Kingman Associate Planner FROM: Lakehaven Utility District SUBJECT: Agenda Item No. 1 - Historic Cabins City Park SEP95-0028 COMMENTS: The District has no comment on this issue. The plans do not indicate the need for provision of water or sewer service to the proposed park. SEPA comments will be provided by the District's Principal Planner, Mary Duty, under separate cover. You may contact her directly at 946-5440. By: Date: /Z — 7 M y e(ossette S pervisor of Technical/Support Services • ENVIRONMENTAL CHECKLIST Purpose of Checklist: The State Environmental Policy Act (SEPA), Chapter 43.21C RCW, requires all governmental agencies to consider the environmental impacts of a proposal before making decisions. An environmental impact statement (EIS) must be prepared for all proposals with probable significant adverse impacts on the quality of the environment. The purpose of this checklist is to provide information to help you and the agency identify impacts from your proposal (and to reduce or avoid impacts from the proposal, if it can be done) and to help the agency decide whether an EIS is required. Instructions for Applicants: This environmental checklist asks you to describe some basic information about our proposal. Governmental agencies use this checklist to determine whether the environmental impacts of your proposal are significant, requiring preparation of an EIS. Answer the questions briefly, with the most precise information known, or give the best description you can. You must answer each question accurately and carefully, to the best of your knowledge. In most cases, you should be able to answer the questions from your own observations or project plans without the need to hire experts. If you really do not know the answer, or if a question does not apply to your proposal, write "do not know" or "does not apply." complete answers to the questions now may avoid unnecessary delays later. Some questions ask about governmental regulations, such as zoning, shoreline, and landmark designations. Answer these questions if you can. If you have problems, the governmental agencies can assist you. 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. Use of Checklist for Non-project Proposals: 2 Complete this checklist for non-project proposals, even though questions may be answered "does not apply." In addition, complete the Supplemental Sheet for Non-project Actions (part D). For non-project actions, the references in the checklist to the words "project," "applicant," and "property or site" should be read as "proposal," "proposer," and "affected geographic area," respectively. TO BE COMPLETED BY APPLICANT EVALUATION FOR AGENCY USE ONLY A. BACKGROUND 1. Name of proposed project, if applicable: Historic Cabins Park 2. Name of applicant: Parks, Recreation and Cultural Services Department City of Federal Way 3. Address and phone number of applicant and contact person: Barbara Simpson Landscape Architect, City of Federal Way 33530 1st Way South Federal Way, WA 98003 (206) 661-4048 4. Date checklist prepared: October 14, 1995 5. Agency requesting checklist: Community Development Services City of Federal Way • • 6. Proposed timing or schedule (including phasing, if applicable): Step 1 - March 1994 through December 1995 Step 1 includes construction of concrete foundations for two historic cabins, siting and restoring of cabins, fencing around cabins to mothball and exclude public access until the park is developed for public use. Step 2 - May 1995 through May 1996 Step 2 will include identification of funding sources, design of the project, and project permitting including Process III. Step 3 - Schedule not determined at this time. Step 3 will be the construction phase of the project. 7. Do you have any plans for future additions, expansion, or further activity related to or connected with this proposal? If yes, explain. This proposal addresses the full extent of the anticipated elements of the park development. No future addition, expansion or further activity is anticipated. 8. List any environmental information you know about that has been prepared, or will be prepared, directly related to this proposal. A soils report was prepared by Pacific Testing Laboratories to determine the suitability of existing site soils for foundation construction. This document is included as Attachment A. A wetland delineation report is included as Attachment B. A soils report to determine suitability for surface water infiltration will be prepared for the the building permit. A boundary line and partial topographic survey by Barrett Consulting Group as Attachment C. A supplemental topographic survey and significant tree survey by ESM, Inc. as Attachment D. A traffic impact analysis prepared by the Public Works Department, City of Federal Way as Attachment E. A technical information report by ESM, Inc. as Attachment F. 9. Do you know whether applications are pending for governmental approvals of other proposals directly affecting the property covered by your proposal? If yes, explain. Master Land Use Application for Process III. 4 No other proposals directly affecting the property are known of at this time. The property is under the ownership of the City of Federal Way and jurisdiction of the Parks, Recreation and Cultural Services Department through which any proposals generated by others concerning the site must be approved. 10. List any government approvals or permits that will be needed for your proposal, if known. Process III approval, concurrent/superceded Process II approval SEPA approval Building Permit Fire Hydrant Permit Sign Permit Right of Way Use Permit Puget Power - permission to build improvements on property King County Open Space Committee Approval 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. The Hylebos Historic Park site is a 4.19 acre site, the western upland portion of which is being proposed for public park development. The site was acquired with King County Open Space Bond Issue funding, and the proposed improvements comply with allowed uses as Open Space. These uses include the siting of two historically significant cabins for public viewing, a small parking area, landscaping, irrigation, a loop trail, and a spur trail intended for linkage with Hylebos State Park. Picnic tables, trash receptacles, and directional and interpretive signage will also be included. Public right-of-way improvements will include closure of two curb cuts currently serving the site, enhancement and widening of the entrance to 4th Pl. SW from S. 348th Street and signage to direct the motorist to either the State or City Park. The primary use is for Open Space preservation and subsequent environmental benefits to the public. Secondary uses are for historic preservation, wetland interpretation, walking and hiking. The project provides a pedestrian link from S. 348th St. to Hylebos State Park, and eventually through Blueberry Farm Park to S. 356th St. 5 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. Street Address: 411 S. 348th St., Federal Way, WA 98003 STR: W 1/2 20-21-4 Legal Description: See attachment. Site Plan: See attachment. Vicinity Map: See attachment. Topographic Map: See attachment. NG B. ENVIRONMENTAL ELEMENTS 1. EARTH a. General description of the site (circle one): Flat, rolling, hilly, steep slopes, mountainous, other. b. What is the steepest slope on the site (approximate percent slope)? 20% C. What general types of soils are found on the site (for example, clay, sand, gravel, peat, mulch)? If you know the classification of agricultural soils, specify them and note any prime farmland. The test pit conducted by Pacific Testing Laboratories revealed the native ground to be silty sand. The King County Soils Survey lists the upland portion of the site as Everett Alderwood gravelly sandy loam, and the wetland portion of the site as Norma sandy loam. The flattened upland area may have been filled to some extent to provide an area for the previously existing house and driveway so it is unclear whether the silty sand found by Pacific Testing was fill or native ground. Overlying the silty sand is a „,,i- •\\-1_____-_1!,..,,_Li u•-• r _ isne - m Ozl oy u- t u * orcoc• ~ ki � •i M I- ei C\i t d.V V , ' �, ce * 1 � 3 rN o 1 a ti 29 yo/ F- `tot• 16 9/ ,, _ W _ • i) ...S% _ o Frw - � LI"OOC _-Fsls N S..S9'Q21 .g swiw�rr�-=,lnun_�frgrv. rrsr,.+• .o,-___09 Q©. 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IL t� N 1 1 to m eil___(9 + �1 I u,( r----------1 .O'snC�Z 1 I v 6 three to six foot layer of pit run material which was brought in to fill the basement area of the house after demolition.. d. Are there surface indications or history of unstable soils in the immediate vicinity? If so, describe. No e. Describe the purpose, type, and approximate quantities of any filling or grading proposed. Indicate source of fill. The purpose of future filling and grading of the site will be to prepare the site for the roadway entrance, parking lot and trail development. Grading will occur in conjunction with the parking lot to create a biofiltration swale for surface water runoff treatment. The type of grading will be rough and fine grading utilizing heavy equipment for the roadway entrance, parking lot, biofiltration swale and trail areas. All graded areas will be compacted. Earthwork fill types will be 5/8" minus crushed rock, topsoil and yard waste compost. The quantity of grading is approximately 600 - 800 cy. Fill sources are unknown at this time. Bid laws preclude specifying a sole source for materials, so quality control is dictated by the specifications and conformance approved by the Contractor, Architect, and Project Manager for the City. The fill source will be clean, free of toxic materials and conform with project specifications and City of Federal Way code. f. Could erosion occur as a result of clearing, construction, or use? If so, generally describe. Erosion could occur due to clearing and grading during construction. Erosion is not expected to occur after construction is completed and the site stabilized with planting. g. About what percent of the site will be covered with impervious surfaces after project construction (for example, asphalt or buildings)? Approximately 6%. 7 h. Proposed measures to reduce or control erosion, or other impacts to the earth, if any. Erosion control methods will include: construction scheduled to occur as much as possible during dry weather, silt fencing, protection of stockpiled and cleared areas during wet weather. and revegetation of all cleared areas not protected by hard surfaces. Impervious surface drainage will be treated and directed into the biofiltration swale and point source erosion water flow will be directed into the swale for diffusion. 2. AIR a. What types of emissions to the air would result from the proposal (i.e., dust, automobile, odors, industrial wood smoke) during construction and when the project is completed? If any, generally describe and give approximate quantities if known. Emissions to the air resulting from construction would be dust during grading operations and exhaust from heavy equipment and other vehicles. Emission to the air after the project is completed will be from automobile exhaust due to park visitors. b. Are there any off-site sources of emissions or odor that may affect your proposal? If so, generally describe. None known of at this time. c. Proposed measures to reduce or control emissions or other impacts to air, if any. No measures have been proposed to reduce or control emissions or other impacts to air. 3. WATER a. Surface. 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. Yes, the site is directly west of Stream 0014 of the West Branch Hylebos Creek sub- basin (Northwest Area). The stream flows through the Hylebos Wetland ( King County inventoried wetland, 1983) which is a peat bog type wetland and on into Stream 0013 which now links with the Fast Branch south of the City Limits and continues to Commencement Bay in Tacoma. 8 2) Will the project require any work over, in, or adjacent to (within 200 feet) the described waters? sIf yes, please describe and attach available plans. • Yes, the project will require work adjacent to the described waters. The parking lot will be constructed 215 feet away from the nearest wetland edge. The lot will drain into an oil/water separator catch basin and biofiltration swale. The recommended buffer from the ordinary high water mark on each side-eft tributary 0014 downstream between the Wetland and tributary 0013 is, 150';`.1The site is upstream of this recommended area. The site is in an area of recommend e'd' enhanced stormwater infiltration. (Hylebos Creek and Lower Puget Sound Basin Plan Draft, 1991). 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. None. 4) Will the proposal require surface water withdrawals or diversions? Give general description, purpose, and approximate quantities if known. No. 5) Does the proposal lie within a 100-year floodplain? If so, note location on the site plan. No the proposal lies in Zone X as described by Map #53033 C0450D, Sept. 29, 1989, FEMA Flood Insurance Rate Map. 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. No b. Ground. 1) Will ground water be withdrawn, or will water be discharged to groundwater? Give general description, purpose, and approximate quantities if known. No 9 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. None c. Water runoff (including storm water). 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. Storm water runoff from the parking lot will be directed into a biofiltration swale. From there the water will filter through existing site soils and eventually into the ground water. Due to the small surface area of the parking lot, the biofiltration swale is not required by code, but has been included in the project to demonstrate stormwater best management practices. 2) Could waste materials enter ground or surface waters? If so, generally describe. Normal use and construction of the park will not cause waste materials to enter these waters.. d. Proposed measures to reduce or control surface, ground, and runoff water impacts, if any. The majority of the site will be left natural and preserve existing drainage patterns. Methods to reduce and control impacts are described in C. 1. 4. PLANTS a. Check or circle types of vegetation found on the site. X deciduous tree: alder, maple, aspen, other - Black Cottonwood X evergreen tree: fir, cedar, pine, other - Hemlock X shrubs - Hardhack, Blackberries, Scotch Broom, Red Elderberry, Red Osier, Dogwood, Salmonberry X grass - Meadowgrass pasture crop or grain wet soil plants: cattail, buttercup, bulrush, skunk cabbage, other - Hardhack, Hedgenettle, water plant: water lily, eelgrass, milfoil, other Soft Rush, Lady Fern other types of vegetation - Domestic Apple 10 b. What kind and amount of vegetation will be removed or altered? Grasses and one area of Bigleaf Maple will be removed. The maples are in a multiple trunk grouping rather than single tree, and are in the vicinity of the future parking lot. Some scotch broom and blackberries will be removed from the upland area. c. List threatened or endangered species known to be on or near the site. No threatened or endangered species are known to be on the site. d. Proposed landscaping, use of native plants, or other measures to preserve or enhance vegetation on the site, if any. The proposed landscaping will preserve most of the trees and existing pasture vegetation. The old apple trees will also be preserved as part of the historic character of the site. Two rhododendrons considered historic to the area will also be planted as a part of the landscape plan. The reseeded field area will contain wildflower mix including lupines, and bachelor's buttons. Parking lot landscaping will include deciduous trees and low ground cover. Trees will be added to shade asphalt areas. 5. ANIMALS a. Circle any birds and animals which have been observed on or near the site or are known to be on or near the site. birds: hawk, heron, eagle, songbirds, other: Band Tailed Pigeon, Downy Woodpecker mammals: deer, bear, elk, beaver, other: Chickadee, Robin, Sparrow, Towhee fish: bass, salmon, trout, herring, shellfish, other: A broader list of possible or potential is contained in "Draft Wetland Determination and Characterization"-Hyleobs Park by Parametrix, Inc. Aug. 1994. b. List any threatened or endangered species known to be on or near the site. None identified. c. Is the site part of a migration route? If so, explain. None identified. d. Proposed measures to preserve or enhance wildlife, if any. .9 acres of the eastern portion of the site designated as wetland and associated buffer will remain undisturbed. Approximately 92% of the rest of the site will be vegetated. New landscaped areas will include grasses, wildflowers, native shrubs and trees. New habitat (food source and cover) will be created and/or enhanced. 11 6. ENERGY AND NATURAL RESOURCES a. What kinds of energy (electric, natural gas, oil, wood stove, solar) will be used to meet the completed project's energy needs? Describe whether it will be used for heating, manufacturing, etc. Energy needs are minimal. An electrical supply to the irrigation controller and valves will be needed. It is possible electrical supply will be extended in the future to the cabins to provide plug-ins for lights, coffee, etc. b. Would your project affect the potential use of solar energy by adjacent properties? If so, generally describe. No. 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. None anticipated. 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. No. 1) Describe special emergency services that might be required. During construction and as the site is used for recreation purposes, there is always some risk of accidental fire, and need for police and emergency medical services. These needs will remain slight and will not place a burden on local services nor create a need for increasing such services. 2) Proposed measures to reduce or control environmental health hazards, if any. None anticipated. 12 b. Noise. 1) What types of noise exist in the area which may affect your project (for example: traffic, equipment operation, other)? S.W. 348th is a major arterial and generates some traffic noise. Due to the recreation nature of the proposal and on site landscape mitigation, this noise will not place any burden upon the site with respect to its use and enjoyment. 2) What types and levels of noise would be created by or associated with the project on a short-term or long-term basis (for example: traffic, construction operation, other)? Indicate what hours noise would come from the site. Some short-term construction noise will be generated. This noise will be moderate and confined to normal working hours for approximately 45 to 60 days. Long-term noise will be very slight and confined to the noise made by passive recreation users as they walk through the site. 3) Proposed measures to reduce or control noise impacts, if any. None anticipated. 8. LAND AND SHORELINE USE a. What is the current use of the site and adjacent properties? The site is currently unused. Denny Cabin is being restored on the site. A foundation has been poured for Barker Cabin. SOUTH-a single family residence. WEST-Puget Power Substation. EAST-a large 4.5 acre parcel with one single family residence on the eastern 1/3 of the property. b. Has the site been used for agriculture? If so, describe. No. However, there are a couple of old apple trees and some seedlings'which would indicate they were planted in the past for home use. c. Describe any structures on the site. Two historic cabins are being erected and restored. These structures were moved onto the site within the past two years (1993-1994). The only other structure is a very old partially standing historic farmstead. d. Will any structures be demolished? If so, what? No. 13 e. What is the current zoning classification of the site? RS 35.0 f. What is the current comprehensive plan designation of the site? Rural residential 35,000 S.F. min. lot size g. If applicable, what is the current shoreline master program designation of the site? Not applicable. h. Has any part of the site been classified as an "environmentally sensitive" area? If so, specify. The eastern .9 acres is part of the head waters of the Hylebos waterway and is designated as a palustrine-forested wetland. i. Approximately how many people would reside or work in the completed project? There will be no residents. Only periodic staffing of the cabins is anticipated. One to two people on an irregular basis for interpretive purposes. j. Approximately how many people would the completed project displace? None. k. Proposed measures to avoid or reduce displacement impacts, if any. None anticipated. 1. Proposed measures to ensure the proposal is compatible with existing and projected land uses and plans, if any. The proposed use is in conformance with existing zoning and land use requirements. The proposal presents no compatibility problems with adjacent uses. It is a low intensity use and contains adequate buffering mitigation. 9. HOUSING a. Approximately how many units would be provided, if any? Indicate whether high, middle, or low-income housing. None. 14 b. Approximately how many units, if any, would be eliminated? Indicate whether high, middle, or low-income housing. None. c. Proposed measures to reduce or control housing impacts, if any. None. 10. AESTHETICS a. What is the tallest height of any proposed structure(s), not including antennas; what is the principal exterior building material(s) proposed? The historic cabins are single story log structures with shake roofs. The approximate height is 24 feet. b. What views in the immediate vicinity would be altered or obstructed? None. c. Proposed measures to reduce or control aesthetic impacts, if any. Aesthetic impacts will be minimal. New landscape enhancement and buffering will be the primary mitigation against impacts. 11. LIGHT AND GLARE a. What type of light or glare will the proposal produce? What time of day would it mainly occur? The proposal is a day use facility. Light and glare will not be a problem. b. Could light or glare from the finished project be a safety hazard or interfere with views? No. c. What existing off-site sources of light or glare may affect your proposal? None. d. Proposed measures to reduce or control light and glare impacts, if any. None anticipated. 15 12. 1 CREATION a. What designated and informal recreational opportunities are in the immediate vicinity? Immediately south is Hylebos State Park, which offers day use, passive recreation for nature walks and interpretation. b. Would the proposed displace any existing recreational uses? If so, describe. No. c. Proposed measures to reduce or control impacts on recreation, including recreation opportunities to be provided by the project or applicant, if any. None anticipated. 13. HISTORIC AND CULTURAL PRESERVATION a. Are there any places or objects listed on, or proposed for, nation, state, or local preservation registers known to be on or next to the site? If so, generally describe. None currently. The Denny and Barker Cabins were declared historically significant by the City of Federal Way on May 7, 1992. b. Generally describe any landmarks or evidence of historic, archaeological, scientific, or cultural importance known to be on or next to the site. The West Hylebos wetlands to the south contains many unique plant/soil associations, which are being preserved. The site itself, with the exception of the old farmstead barn, has no major landmarks or unique historic/archaeological/scientific elements. c. Proposed measures to reduce or control impacts, if any. None anticipated. 14. TRANSPORTATION a. Identify public streets and highways serving the site, and describe proposed access to the existing street system. Show on site plans, if any. The site is served by S. 348th Street, a major arterial on the north. Access would be via a 24' entry park drive off S. 348th on the project's west boundary. • 16 b. Is the site currently served by public transit? If not, what is the approximate distance to the nearest transit stop? Yes. A bus stop and Metro Park and Ride lot exist one block to the east of the property. c. How many parking spaces would the completed project have? How many would the project eliminate? Seven (7) proposed. None eliminated. d. WM the proposal require any new roads or streets, or improvements to existing roads or streets, not including driveways? If so, generally describe (indicate whether public or private). Two existing curb cuts on S. 348th would be eliminated. The existing access drive on the west would be widened and improved. No additional road improvements are anticipated. e. Will the project use (or occur in the immediate vicinity of) water, rail, or air transportation? If so, generally describe. No. f. How many vehicular trips per day would be generated by the completed project? If known, indicate when peak volumes would occur. The project is a low intensity day use recreation proposal. Seven car parking spaces are provided. On weekdays, as few as 1-3 visitors can be expected. Weekends would be the time of optimum use. Under normal circumstances, a turnover rate of three (3) would be normal and produce 18 to 22 visitors (single car trips). See traffic impact analysis attached. g. Proposed measures to reduce or control transportation impacts, if any. Impacts would be minimal. No major mitigation is proposed. 15. PUBLIC SERVICES a. Would the project result in an increased need for public services (for example: fire protection, police protection, health care, schools, other)? If so, generally describe. Generally, public service requirements would be on an emergency basis and should be minimal. Due to the nature of the proposal (public recreation), the site would be maintained by the Parks Department. Current staffing is adequate to accomplish this task without additional hiring. b. Proposed measures to reduce or control direct impacts on public services, if any. None proposed. 17 16. UTILITIES a. Circle utilities currently available at the site: electricity, natural gas, water, refuse service, telephone, sanitary sewer, septic system, other. 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. Puget Power would provide power hookup for the irrigation controller. Federal Way Water and Sewer (Lakehaven) would provide water for irrigation and limited domestic use (water spigots) for the cabins. 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: 73.vZ' / 744,t,1 ro a-- '13 g'2Ia t4- S rps DATE SUBMITTED: 0// q 5 • ATTACHMENT B DRAFT WETLAND DETERMINATION AND CHARACTERIZATION HYLEBOS PARK 1 Prepared for CITY OF FEDERAL WAY 33530 1st Way South Federal Way, Washington 98003 gii Prepared by PARAMETRIX, INC. 5808 Lake Washington Blvd. N.E. Kirkland, WA 98033 August 1994 Thomas R. Strong, Ph.D., Wet ds Ecologist cA"fil (James Kelley, Ph.D., Senioretlan cologist I I TABLE OF CONTENTS Page PROJECT DESCRIPTION AND LOCATION 1 l REPORT OBJECTIVES 1 I METHODS 2 WETLAND DELINEATION 2 1 WETLAND CLASSIFICATION 3 WETLAND FUNCTIONAL ASSESSMENT 3 EXISTING CONDITIONS 4 SITE DESCRIPTION 4 WETLAND CONDITIONS 4 WILDLIFE 8 LIMITATIONS ON ACTIVITIES IN REGULATED WETLANDS 9 REGULATORY STANDARDS 9 IMPLICATIONS FOR HYLEBOS PARK 9 REFERENCES 11 APPENDICES A LIST OF OBSERVED PLANT SPECIES B LISTS OF OBSERVED OR EXPECTED ANIMAL SPECIES C DATA SHEETS I] LIST OF FIGURES Figure Page 1 Vicinity Map 5 2 Wetland Location 6 ; Hylebos Park -Federal Way 55-2441-04 Draft Wetlands Report i September 1, 1994 PROJECT DESCRIPTION AND LOCATION The City of Federal Way proposes to develop park facilities at the Hylebos Park site in Federal Way, Washington. The project area is located on S. 348th St. at 4th St. S. The property is adjacent to the Hylebos Wetlands State Park. The abandoned runway crosses the property in a northeast to southwest direction. The site slopes generally from northwest to southeast, with a high point at elevation 420' near the north end and low point at 350' near the south end. Three drainages cross the property in a northwest to southeast direction. Vegetation on the site is dominated by a second-growth broad-leaved deciduous forest, primarily red alder and black cottonwood. REPORT OBJECTIVES 1 The objectives of this wetland analysis and report are the following: f • To identify and delineate the boundaries of wetlands at the project site. To survey and map wetland boundaries on site topographic maps. • To classify wetlands according to Federal Way City Code (Sec 22-1356) and determine wetland areas and setback requirements. • To describe and classify the primary plant communities, soils, and hydrologic sources land outlets of each of the observed wetlands according to the requirements of the Federal Way City Code (Sec. 22-1356). :;,1 • To describe the functional values of the wetlands. • To compile lists of plant and wildlife species observed on the site. J Hylebos Park - Federal Way 55-2441-04 Draft Wetlands Report 1 September 1, 1994 I METHODS Potential wetland areas within the proposed park site were identified using published data sources (including the National Wetlands Inventory map, and U.S.G.S. topographic maps of scale 1:24,000), locating stream channels, and examining the King County Soil Survey (USDA 1973) for hydric soil. To locate, delineate, and characterize the wetland on the subject property Parametrix biologists conducted field surveys during April and August, 1994. The wetland boundary was determined based on the composition of the plant communities, hydrology and soil conditions as described below. Plant species were identified using Hitchcock and Cronquist (1973). Common plant species observed within the proposed project area are listed in Appendix A, with common and scientific names and wetland indicator status. WETLAND DELINEATION The wetland was identified using the methodology described in the Federal Manual for Identifying and Delineating Jurisdictional Wetlands (1989) (referred to as the 1989 Manual). This method, which is required by the Federal Way City Code (Sec. 22-1) represents an interagency agreement of the following federal agencies: the U.S. Fish and Wildlife Service (USFWS), U.S. Soil Conservation Service (USSCS), U.S. Army Corps of Engineers (USACOE), and U.S. Environmental Protection Agency (USEPA). For regulatory purposes, wetlands are defined as: . . . those areas that are inundated or saturated by surface or groundwater at a frequency and duration sufficient to support, and that under normal circumstances do support, a prevalence of vegetation typically adapted for life in saturated soil conditions. Wetlands generally include swamps, marshes, bogs, and similar areas. The specific methodology used for this project was the routine onsite determination method described in the 1989 Manual. The methodology for wetland delineation requires that three parameters be explained: vegetation, hydrology, and soils. For an area to be considered a wetland, positive indicators for each parameter must be present. Data sheets for wetlands and adjacent upland areas are included in Appendix C. Hydrophytic plants are those plants adapted to life in water or saturated soil, or which occur on a substrate that, at least periodically, lacks oxygen. Commonly occurring plant species in Washington have been assigned a plant indicator status based on their frequency of occurrence Jin wetlands (Appendix A and Reed 1988; 1993). Plant species are categorized as: (1) obligate wetland species, (2)facultative wetland species that usually occur in wetlands, (3)facultative plant species that occur in wetlands as frequently as in uplands, (4)facultative upland plant species that occur more commonly in uplands, (5) upland plant species that rarely occur in wetlands, and (6) no indicator status species, i.e., species for which insufficient information is Hylebos Park -Federal Way 55-2441-04 Draft Wetlands Report 2 September 1, 1994 I I available to determine indicator status. To meet the criteria for hydrophytic vegetation, the area being evaluated must have more than 50 percent of the dominant species rated as facultative, facultative wetland, or obligate wetland. If exactly 50 percent of the species is facultative or 1 wetter, then total areal coverage of these species is the determining factor. Wetland hydrology is indicated by 14 days of inundation or soil saturation within one foot of the I soil surface during the growing season. Direct observations of hydrology, including ponding and soil saturation, may be limited during the dry season or may be misleading during the winter rainy season. However, other indicators that confirm the presence of wetland hydrology may Ibe observed throughout the year. These indicators include water-stained leaves, oxidized root channels associated with living roots and rhizomes, visible sediment deposits and exposed mud. In areas where no positive indicators of wetland hydrology are observed, but positive wetland ,, indicators are present for soils and vegetation, wetland hydrology may be inferred to be present (1989 Manual). Hydrology may also be inferred to be absent if there is evidence that the site ::. has been effectively drained. At each site evaluated for the presence of wetlands, hydrologic sources and indications were recorded and described. Hydric soils are defined as soils that are saturated, flooded, or ponded long enough during the growing season to develop anaerobic conditions capable of supporting the growth and regeneration of hydrophytic vegetation. Hydric soil indicators include mottles, low soil chroma, ;_ii gleying and high organic content. Chroma, mottle, and gley colors are determined using the Munsell soils color charts (Kollmorgen 1975). Soils were sampled with a hand-held soil auger and examined for color and other hydric indicators. i WETLAND CLASSIFICATION 1 The wetland was classified using the USFWS Classification of Wetlands and Deep Water Habitats (Cowardin et al. 1979). This document, which is the basis for the National Wetlands Inventory (NWI) classification, is the current Federal standard for classifying wetland habitat. The Washington State Department of Ecology Classification is based on the wetlands rating system described in Ecology (1993). Data sheets are included in Appendix C. The City of Federal Way does not distinguish separate classes of wetland. All wetlands meeting the criteria jin the 1989 Manual are considered regulated wetlands. WETLAND FUNCTIONAL ASSESSMENT The functional values for the wetland were determined usingan approach developed bythe PP P J Washington State Department of Ecology. Wetland functions considered in this evaluation include overall wetland and buffer condition, biological support, water quality improvement, flood and stormwater control, groundwater exchange, cultural values, heritage value, and shoreline protection. Data sheets are included in Appendix C. Hylebos Park -Federal Way 55-2441-04 Draft Wetlands Report 3 September 1, 1994 I EXISTING CONDITIONS r SITE DESCRIPTION The project area is located on the south side of S. 348th Street and east of 4th Ave. S. (Figure 1), in Federal Way, Washington. The site generally slopes down from the west to the east. The west end of the site is dominated by weedy, grassy field, where some native big-leaf maples and fruit trees are present along with several dense blackberry thickets. The east end of the site is wetland, and is adjacent to the headwaters of Hylebos Creek. Plant species observed along the proposed project are listed in Appendix A. An old house is adjacent to the southwest corner of the site, and a newer residential area occurs north of S. 348th St. The Hylebos Wetlands State Park is adjacent to the southeast edge of the property. WETLAND CONDITIONS The wetland area at the east end of the property is continuous with wetlands south and east of the property associated with a tributary to Hylebos Creek. This large wetland is shown on the d National Wetland Inventory Map (Poverty Bay quadrangle) as a temporarily flooded forested wetland, with areas of seasonally flooded scrub-shrub wetlands and some areas of permanent open water. 1 Classification: IUSFWS - The wetland area on the Hylebos Park property is classified as a palustrine forested, small areas of emergent and scrub-shrub vegetation occur in the wetland. Wetlands adjacent to the park site include larger areas of scrub-shrub, emergent, and open-water wetlands. i Ecology - Category II Size: The portion of the wetland on the park property is 0.9 acres. The total wetland area 1 (including continuous off-site wetlands) is greater than 200 acres. Topography: The wetland occurs in a nearly level area, that drains east to Hylebos Creek. Hydrology: The wetland is in an area of seasonal groundwater discharge. An intermittent spring is located on the uphill edge of the wetland midway between the north and south boundaries of the property. Water was observed discharging from the spring during April 1994; however, it was dry during an August 1994 site visit. Water discharged from the wetland on the property flows into a tributary of Hylebos Creek and the Hylebos Wetlands Hylebos Park -Federal Way 55-2441-04 Draft Wetlands Report 4 September 1, 1994 1 • • La:ice . r —r•1�.;S.l PI A.l.s~ti� .'._1.� • • 1 _ L ., I' f i q 1..jj � x� � k mil, 1 •• t_ • t .t �3 '- .'. I '' M.a, ` S.336TH STREET • j ‘ \ .`. \ _f , \`' Ylz r a <' d K t+is (td rrx4; £ 1 Y c h S mot• :..;/ , • S.348TH STREET bilhill- " •, ..jiipejr 9 Ft •PROJECT SITE _ ;. - .. „.-....i 1:‘-'''..-'-'..''''s 1 ::: \ • i. Z.", • I 4 Y. . • • • ' ;i 7f�. • n Ll i SCALEI I IN FEET /�` Figure 1. © Vicinity Map 0 1,000 2,000 Hylebos Park C 0 • 4- I- V a� • >- N p� �.0co 1Tj,N It 2 1< 4 4 4 4 4 4 4 4 4 < 4 4 4 4 4 4 4 4 4 4 { 4 4 4 4 4 4 4 S t < < < t t S < < < t { < t < < { t t < S S < < < < It < t < { t t < S < < < t < < t < t < t < < < t < < < < 4 4 4 4 4 t 4 S 4 4 < 4 4 4 4 4 { 4 4 4 < 4 4 <. < 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 I < i < { t Q < t < { S < < < t <, < < < < t < < t < < < < < < < , < t t < < Z t t < t < < { { { < < < <a < { < < < { { t < < { J { < < < < < < < < t { < { < < < < < < { < F- { < t < { , < < < 4 < {ill 4 < < < 4 t < < < < < S t < { t i t < < < < <3 t < < t < < < < { { < < < < t < < < < S < < < < < { t t t < < < < < { < < < < < < { < t < < < < < < < < < • i S < S < < < < < { < < t t < S < I < < { < C t < S < S < < < < < S < < 1 < S { < < t i < t { < < C < < { < < •t 4 4 4 4 4 4 4 4 < 4 4 4 4 4 4 4 4 < t t < < S < { < < S < < < < < { < < 1 t < S < t < { < t < < < < t < I S < < < < S < < < < < < < < < { < { < < < { < t t { < < t { < < < < { < { < t < < y� < < < S < t < < < < t I{t<<<< < < < < { < < < < < t S < < < < < < < I1<<<<< < t < { < I{ w i I LU Q I CO CO i I• 1 $ I I 'S 3OVld HIP I ].• j I I CO -o w w LL O Z N W J Q U 0) o I _ State Park. These hydrologic conditions satisfy the criteria for wetland hydrology in the 1989 Manual. Soil: Soils in the wetland portion of the Hylebos Park property are mapped as Norma sandy loam (SCS 1973). The Norma series is a poorly drained soil formed in alluvium along stream bottoms. It is classified as a hydric soil by the National Technical Committee for Hydric Soils (NTCHS 1991). Observed soils in the wetland area had a dark gray (10 YR 4/1) matrix with dark yellowish brown (10 YR 4/6) mottles or a black matrix (10 YR 2/1) with dark yellowish brown (10 YR 3/6) mottles. These soil conditions satisfy the criteria for hydric soils in the 1989 Manual. Soils in the upland portion of the Hylebos Park are mapped as Everett-Alderwood gravelly } sandy loam (SCS 1973). This mapping unit includes areas of Everett soils and Alderwood soils, neither of which is classified as a hydric soil. Everett soils are somewhat excessively drained soils underlain by very gravelly sand. They are formed in glacial outwash deposits. Alderwood soils are moderately deep and moderately well drained and are formed on glacial till. Upland soil samples were dry, gravelly, and dark brown (10 YR 3/3) to dark yellowish brown (10 YR 3/4) with no mottling. Vegetation: The forested portion of the wetland includes several tree species, including red alder, Pacific willow, and western redcedar. Drier hummocks in the wetland contain big-leaf ill maples and western hemlocks. The wetland shrub layer includes salmonberry, red-osier dogwood, and spirea, and several blackberry species are invading from the upland to the west. The herbaceous layer is dominated by giant horsetail, creeping buttercup, hedge- nettle, and lady-fern, with areas of skunk cabbage, small-fruited bulrush, and soft rush. This vegetation meets the criteria for hydrophytic vegetation in the 1989 Manual. 1 Vegetation in the upland area on the western portion of the property has been disturbed by clearing and use as a fruit orchard. Dominant trees include black cottonwood, red alder, and ,.. big-leaf maple, with a variety of fruit trees. Blackberries and Scot's broom are the dominant upland shrubs, and the herbaceous layer is dominated by grasses and weedy species. j Functional Analysis: The overall condition of Wetland A is rated as high because it is continuous with a large offsite wetland associated with the head of a tributary of Hylebos Creek. The wetland buffer on the Hylebos Park property has a low value because of clearing and invasion by blackberries, although the buffer around offsite portions of the wetland has a much higher value. The biological support rating is high because of the continuity with extensive off-site wetlands, diverse vegetative cover types, complex structure, and the large size of the wetland. This wetland is given a high rating for water quality improvement because of the high vegetative cover and the slow movement of water through the wetland. It is given a high rating for flood and stormwater desynchronization because of its large size and its location in the upper part of the watershed. The wetland functions as a seasonal groundwater discharge area as evidenced by the spring on its west edge. This spring i 55-2441-04 Hylebos Park - Federal Way Draft Wetlands Report 7 September 1, 1994 3 I provides intermittent support of downstream baseflow in Hylebos Creek. This wetland has a high cultural value because of the ease of public access, its adjacency to the Hylebos Wetland.}State Park, diversity of habitats, complex wetland structure, and the historical 1 interpretation site on the property. The heritage value is low because this wetland is not considered a Washington Natural Heritage wetland, and it does not support any known threatened, endangered, or sensitive plant or animal species. I WILDLIFE 1 The relatively small size of the proposed park, the limited habitat variability at the site, and the disturbed conditions of some adjacent land limit the number of wildlife species and density of individuals that could be present. However, the connections to the adjacent Hylebos Wetlands State Park could offset these limitations and enhance the wildlife diversity. Lists of animal species observed on the site (or expected to be present in this habitat) are given in Appendix B. The lack of permanent open-water habitats on the property would limit the amphibians that could be present on this site, with Pacific chorus frogs and western toads being the most likely species 1 _ to be found. Other amphibians could be present in the intermittent tributary to Hylebos Creek to the east and south of the project site. Few reptile species would be expected, although northern alligator lizards and garter snakes could be present. Birds are the most likely group of animals to be encountered on the property, and several species of songbirds were observed during the site visit (see Appendix B). The most likely mammals 1 to be found on the site are squirrels and other small rodents, moles, and shrews. Mammals that have adapted to urban environments, such as raccoon and opossum, are likely to be present. I LI I J Hylebos Park -y Federal Way 55-2441-04 Draft Wetlands Report 8 September 1, 1994 LIMITATIONS ON ACTIVITIES IN REGULATED WETLANDS r REGULATORY STANDARDS The Federal Way City Code (Article XIV, Division 7) imposes restrictions on development activities that may be permitted in wetland or setback areas. These criteria are intended to maintain wetland functions and values, to avoid detrimental effects on other property, to ensure that proposals are in the best interest of public health, safety, or welfare, and to ensure that the applicant has the ability to successfully complete the project and follow through with long-term monitoring. In general, no surface modifications or improvements may be located within regulated wetlands, except as allowed in Section 22-1358. The city may allow pedestrian access through wetlands in conjunction with public parks, if such access is designed to minimize adverse effects on the wetlands and access is limited to defined areas. Other modifications or improvements may be allowed through requests submitted to the City Council for approval. Approval of such requests is based on criteria specified in Sec. 22-1358 (d). Any request for approval of modifications or improvements in regulated wetlands must provide a mitigation plan to compensate for adverse impacts to wetlands. This plan must detail environmental goals and objectives, performance standards, construction plans, timing, a 5-year monitoring program, contingency plan, and performance bonding. Mitigation is restricted to on- site restoration, creation, or enhancement of in-kind wetland type, with no net loss of wetland area, function, or value. For forested wetlands, the minimum replacement ratio is 3:1, while for scrub-shrub wetlands, the minimum replacement ratio is 2:1. Similar to the limitations on wetlands, no surface modifications or improvements may be located within setback areas from regulated wetlands, except as allowed in Section 22-1359. Setback areas include all land within 100 feet in every direction upland from the edge of a regulated wetland. Essential public facilities or utilities may be placed in a setback area, if it is j determined that no feasible alternative exists. Minor improvements, such as footbridges, walkways, and benches may be located within the setback area if there are no adverse effects on wetland functions or values or on other property in the vicinity. Other modifications or improvements in setback areas may be permitted subject to the criteria in Sec. 22-1359 (d), which are intended to maintain wetland functions and values and to avoid detrimental effects on other property. IMPLICATIONS FOR HYLEBOS PARK The regulations described above could impose limitations on the development of park facilities ,„I at the Hylebos Park site. No actions could be taken that would adversely impact the wetland or the required 100-foot setback distance without mitigation. Activities that could be allowed would be constructed trails to provide pedestrian access to the wetland or rehabilitation to 1 Hylebos Park -Federal Way 55-2441-04 Draft Wetlands Report 9 September 1, 1994 I improve the quality of the wetland edge by removal of blackberries and other non-native vegetation. 1 j I I _1 1 j I Hylebos Park -Federal Way 55-2441-04 Draft Wetlands Report 10 September 1, 1994 REFERENCES Cowardin, L.M., Carter, V., Golet, F.C., and E.T. LaRoe. 1979. Classification of wetlands and deep water habitats of the United States. Government Printing Office, Washington, D.C. Federal Interagency Committee for Wetland Delineation. 1989. Federal manual for identifying and delineating jurisdictional wetlands. U.S. Army Corps of Engineers, U.S. Environmental Protection Agency, U.S. Fish and Wildlife Service, and U.S.D.A. Soil Conservation Service. Washington, D.C. Cooperative Technical Publication. Hitchcock, C.L. and A. Cronquist. 1973. Flora of the Pacific Northwest. University of Washington Press. Seattle, Washington. Kollmorgen Corporation. 1975. Munsell Soil Color Charts. National Technical Committee for Hydric Soils. 1991. Hydric Soils of the United States. Soil Conservation Service, Miscellaneous Publication Number 1491. Reed, P.B. Jr. 1988. National List of Plant Species that Occur in Wetlands: Washington. Biological Report NERC-88/18.47 for National Wetlands Inventory. Reed, P.B. Jr. 1993. 1993 Supplement to List of Plant Species that Occur in Wetlands: Northwest (Region 9). Supplement to Biological Report 88(26.9). 1 U.S. Department of Agriculture. Soil Conservation Service. 1973. Soil Survey of King County. Washington State Department of Ecology. 1993. Washington State Wetlands Rating System - Western Washington. Second Edition. Publication # 93-74. I Hylebos Park -Federal Way 55-2441-04 Draft Wetlands Report 11 September 1, 1994 APPENDIX A 1- List of Observed Plant Species Hylebos Park Federal Way, Washington Scientific Name Common Name Indicator Status* TREES: Acer circinatum Vine maple FAC Acer macrophyllum Big-leaf maple FACU Alnus rubra Red alder FAC Populus trichocarpa Black cottonwood FAC Prunus sp. Cherry FACU Salix lasiandra Pacific willow FACW Thuja plicata Western redcedar FAC 1 Tsuga heterophylla Western hemlock FACU SHRUBS: Cornus stolonifera Red-osier dogwood FACW 1 Cytisus scopariusle Scot's broom UPL J Oemria cerasiformis Indian plum FACU Rosa sp. Rose - 1 Rubus discolor Himalayan blackberry FACU Rubus laciniatus Evergreen blackberry UPL Rubus spectabilis Salmonberry FAC :I Rubus ursinus Pacific blackberry FACU Salix sp. Willow FACW Sambucus racemosa Red elderberry FACU Spiraea douglasii Douglas' spirea FACW Symphoricarpos albus Snowberry FACU IHERBS: Athyrium filix femina Lady-fern FACW Cirsium arvense Canadian thistle FACU Cirsium vulgare Common thistle FACU Convolvulus sepium Morning-glory FAC Dactylus glomerata Orchard-grass FACU Epilobium angustifolium Fireweed FACU Hylebos Park -Federal Way _ _ y SS 2441 04 Draft Wetlands Report 1 September 1, 1994 j I Scientific Name Common Name Indicator Status* Equisetum telmateia Giant horsetail FACW Juncus effiusus Soft rush FACW Lysichitum americanum Skunk cabbage OBL Maianthemum dilatatum False lily-of-the-valley FACU Plantago lanceolata English plantain FACU Plantago major Common plantain FACU Poa pratensis Kentucky bluegrass FACU Pteridium aquilinum Bracken-fern FACU Ranunculus repens Creeping buttercup FACW Scirpus microcarpus Small-fruited bulrush OBL Solanum dulcamara Bittersweet FAC Stachys mexicana Hedge-nettle FACW Taraxacum officinale Dandelion FACU Urtica dioica Stinging nettle FAC * Indicator Status OBL - Obligate wetland. Almost always (>99%) occurs in wetlands under natural conditions. FACW - Facultative wetland. Usually (67%-99%) occurs in wetlands, but occasionally found in nonwetlands. 1 FAC - Facultative. Equally likely (34%-67%) to occur in wetlands or nonwetlands. J FACU Facultative upland. Usually(67%-99%a)occurs in nonwetlands,but occasionally(1%- 33%) found in wetlands. 1 UPL - Upland. Almost always (>99%) occurs in nonwetlands under natural conditions. NI No indicator. Insufficient information to determine indicator status. _i II I Hylebos Park -Federal Way 55-2441-04 JDraft Wetlands Report 2 September 1, 1994 i r APPENDIX B Lists of Observed or Expected Animal Species Hylebos Park Federal Way, Washington Scientific Name Common Name Indicator Status* AMPHIBIANS: Taricha granulosa Rough-skinned newt Pot Bufo boreas Western toad Prob Pseudacris regilla Pacific chorusfrog Prob Rana aurora Red-legged frog Pot REPTILES: Elgaria coerulea Northern alligator lizard Prob Thamnophis ordinoides Northwestern garter snake Prob Thamnophis sirtalis Common garter snake Prob ] BIRDS: Accipiter striatus Sharp-shinned hawk Prob Accipiter cooperii Cooper's hawk Pot Buteo jamaicensis Red-tailed hawk Pot Columba livia Rock dove Prob Columba fasciata Band-tailed pigeon Obs Zenaida macroura Mourning dove Pot Bubo virginianus Great horned owl Prob Calypte anna Anna's hummingbird Prob Selasphorus rufus Rufous hummingbird Prob Picoides pubescens Downy woodpecker Obs Picoides villosus Hairy woodpecker Prob Colaptes auratus Northern flicker Prob Contopus sordidulus Western wood-pewee Prob Empidonax traillii Willow flycatcher Prob Empidonax di ficilis Pacific-slope flycatcher Prob Tachycineta thalassina Violet-green swallow Prob Hirundo rustica Barn swallow Prob 1 Cyanocitta stelleri Steller's jay Prob Corvus brachyrhynchos American crow Prob Parus atricapillus Black-capped chickadee Obs 1 Hylebos Park -Federal Way 55-2441-04 1 Draft Wetlands Report 1 September 1, 1994 1 Scientific Name Common Name Indicator Status* Psaltriparus minimus Bushtit Prob Sitta canadensis Red-breasted nuthatch Prob Certhia americana Brown creeper Pot Thryomanes bewicldi Bewick's wren Prob Troglodytes troglodytes Winter wren Prob Regulus satrapa Golden-crowned kinglet Prob Regulus calendula Ruby-crowned kinglet Prob Catharus ustulatus Swainson's thrush Prob Turdus migratorius American robin Obs Bombycilla cedrorum Cedar waxwing Prob Sturnus vulgaris European starling Prob Vireo solitarius Solitary vireo Prob ;. Vireo gilvus Warbling vireo Prob Dendroica petechia Yellow warbler Prob _ Dendroica coronata Yellow-rumped warbler Prob _� WiIsonia pusilla Wilson's warbler Prob Piranga ludoviciana Western tanager Prob Pheucticus melanocephalus Black-headed grosbeak Prob Pipilo erythrophthalmus Rufous-sided towhee Obs Melospiza melodia Song sparrow Obs Zonotrichia leucophrys White-crowned sparrow Prob Junco hyemalis Dark-eyed junco Prob Molothrus ater Brown-headed cowbird Prob Carpodacus mexicanus House finch Obs Carduelis pinus Pine siskin Prob Carduelis tristis American goldfinch Prob Passer domesticus House sparrow Prob j• MAMMALS: Didelphis virginianus Common opossum Prob Sorex vagrans Vagrant shrew Prob Scapanus townsendi Townsend's mole Prob Scapanus orarius Pacific mole Prob 1 Sylvilagus floridanus Eastern cottontail Prob Eutamius townsendi Townsend's chipmunk Prob Sciurus carolinensis Eastern gray squirrel Prob JPeromyscus maniculatus Deer mouse Prob Phenacomys intermedius Heather vole Prob Microtus townsendii Townsend's vole Prob Rattus rattus Black rat Prob I Hylebos Park - Federal Way 55-2441-04 jDraft Wetlands Report 2 September 1, 1994 I Scientific Name Common Name Indicator Status* Mus musculus House mouse Prob Procyon lotor Raccoon Prob Mephitis mephitis Striped skunk Prob * Status Obs - Observed by Parametrix biologists during site visit (including evidence such as tracks, burrows, etc.) Prob - Not observed, but likely to be present in this habitat Pot Not observed, but could potentially be found in this habitat 1 j 1 1 I I I .1 ;I Hylebos Park -Federal Way 55-2441-04 Draft Wetlands Report 3 September 1, 1994 I APPENDIX C DATA SHEETS I Hylebos Park - Federal Way 55-2441-04 Draft Wetlands Report 1 September 1, 1994 I i DATA FORM ly ROUTINE ONSIT'E DETERMINATION METHOD1 Field investigatoj(s): T• A. Fr/to N r Date: i/ l�/ct y ProjeWSlte• ' t'`-6 s" n,t u State: 1`}'1 Coun • tc'N G- 1 der: c D E A'i t. uJ,.} 144 4><s Plant Community it/Name: 'I �E t N r I r Now tt a more detailed site description is necessary,use the back of data form or a Reid notebook. I Do normal environmental conditions exist at the plant community? Yes No ✓ (If no.explain on back) 6 x ctprvo N'r.c.s D A.r c z. Has the vegetation, ils.and/or hydrology been significantly disturbed? Yes No vegetation, yes,explain on back) I . . VEGETATION Indicator Indicator 1 Dominant Plant Soec es Status Stratum Dominant Plant Species Status Stratum 1. A"��r �Kdtiq FAC �/1EE 11. 2. �,d.s Y LArrA# a 1t4 FAck i T,oee . 12. a p,C CO�•R FAC,t, rH,t. 13.• 4. t4.4c .4.4s gas'HA: FAcct S+i'ws 14. 5. 6Qyra67-wn re 60+4r5s4 F,ycr.l // 4 15. 8. 12AONMN CML.►i fte 00<4I FA CuJ ffe.ta 18. 1 _ 7. Srgcrf rs oi!XI c44,+4 8. FAC,y /fEtcs 17. 18. 9. 19. 10. 20. Percent of dominant species that are OBL.FACW. and/or FAC 7/ `� 61 Is the hydrophytic vegetation c q C C n met? es 0-5 �----NoL Rationale: 7 Fff SOILS Series/phase: Alb 2 el 4 s 4 a LO A^r Subgroup:2 FL.4 6"'in<- 414 4 6)`4 G P rs 1 Is the soil on the hydric soils list? Yes ✓ No Undetermined Is the soil a Histosol? Yes No t- Histic epipedon present? Yes No r/ Is the soil: Mottled? Yes ✓ No Gleyed? Yes No L----- Matrix Color: /." Y 2 Y I t Mottle Colors: /o r t. Y/ • Other hydric sail indicators: rt ro AQo #' Yn c ✓EEC,—.aria. , Is the hydric sail criterion met? Yes ✓ No Rationale: L.o,a of/to Ai ti,rto .rr a rrLE r . iHYDROLOGY Is the ground surface inundated? Yes No 1,-----Surface water depth: _ Is the soil saturated? Yes No ✓ ,'t.rrr,40 r Afar s/t ru 041 re'o - Depth to free-standing water in pit/soil probe hole: List other field evidence of surface inundation or soil saturation.Yo44c- sp,L , O .( a4r- wdr4.4Jo PLA'r' ( 'rKCAA.(.t C.•14d,4ae) f 7), OG20(r_ e :4.r Is the wetland hydrology criterion met? Yes ✓ No Rationale: /l Y.)ftf c. -r6 f L . K ro/Lel ,°f Y ri c- v e CsCne r,o , e JURISDICTIONAL DETERMINATION AND RATIONALE Is the plant=mmunity a wetland? Yes No Rationale fcr jurisdictional decision: Pa r r rfJ E /^+o f cAro:L S fo,c ,4 cL (°ff/tA r e.r"e2 t— I1 This data form can be used for the Hydric Soil Assessment Procedure and the Plant Community Assessment Procedure. 2Classificaticn according to 'Soil Taxonomy.' i 8-2 i DATA FORM ROUTINE ONSITE DETERMINATION METHOD' / Field Investigat s): T. 2 • 'r r do"'o Date: r[ I t/ 5 `i Project/Site. fY`:a o J 10,. "- State: `tl A County: (C(..ram AppllcantiCwner. Fl.0 c,t4 A Y IA A"-, Plant Community S/Name: XI",•'s p4..sr it 2- Norte tf a more detailed site description is necessary,use the back of data form or a field notebook. Do normal environmental conditions exist at the plant community? Yes No ✓(N no,explain on back) E X C 4 e rl o S A C t.7 b RA' s �., a Ac. Has the vegetation.soils, and/or hydrology been significantly disturbed? Yea No (If yes. explain on back) 5 ire /144s dEE". CC q,tE0, gAteb 45 o,tcµA,to - o NIc, �,.e,L ol 4/7-I 434 e; tr p J e r.E T.4 r i e..,. VEGETATION Indicator Indicator 1 Dominant Plant Species Status Stratum Dominant Plant Species— Status Stratum 1. ��..,4 ��, 11. 2. 2w"4s '.n-.s„3 co s e c y 12. i 3, Po tn.4re,vsrs FA 13. 4 04,r1 '..c (loafEftArA p,4C4 14. 5• CIILS.NM it4..J ENSE f,4( [_ 15. 6. 16. 7, 18. 8. 1 9. 19. 10. 20. Percent of dominant spedes that are OHL.FACW, and/or FAC 2 S`. Is the hydroohytic vegetation criterio et? Yes No _./ Rationale: - S ) Z r T/t,q c. p4 c. . c��— 1 • . EJEX.arT- /gc.DE�,./,ne SOILS Series/phase. G 4 /o u e w Y -r q.v D Y Co.9.ei Subgroup:2 D Y s((t4 C K 6--'to CM 12.6 Pr S. i Is the soil on the hydric soils list? Yes No ✓ Undetermined Is the soil a i4istasol? Yes No ✓I-flstic epipedon present? Yes No ✓ • Is the soil: Mottled?/ YY� / ,�f o ,/ GleMedo ?e Yes lors: No ______.--_-_-_- Matrix Color. Other hydric soil indicators: it-/' '' Is the hydric soil criterion met? Yes No Rationale: 1-1 i s 14 c-K/t-o.-r 4; ".16 m c, r rc-6- iHYDROLOGY Is the ground surface inundated? Yes No ✓Surface water depth: 1 Is the soil saturated? Yes No ,:: Depth to free-standing water in pit/soil probe hole: List other figqid evidence cf surface inundation or soil saturation. 1LJo 'IE - Is the wetland;tydrology criterion met? Yes No ✓ Rationale: !ma's (VI D E'-+c.E s F 1M 4 -,?p,Q rio,4 0 4, •CAT'N 44r7dAi. JURISDICTIONAL DETERMINATION AND RATIONALE Is the plant community a wetland? Yes No ✓ Rationale for jurisdictional decision: a Poe/ rr-IE 1,401 c.4 r LS {o2. At.lp big,41"a-r6-.Z . t This data form can be used for the Hydric Soil Assessment Procedure and the Plant Community Assessment Procedure. 2Classiffcaticn according to 'Soil Taxonomy.' ] 8-2 DATA FORM ROUTINE ONSITE DETERMINATION METHOD1 Feld Investig s): - a-. S r (t.o r+ a Oats: ifi.f/9 11 Project/Site: ht Y*E 8 or R u f County: K t a C.- ApplIcantoriwn.: P-E9E11.41* "s-e P Aa K r Plant Community *Mame: A i`113 .6 P.w 1- -'4 3 Note: If a more detailed site description is necessary,use the back of data form or a field notebook.. Do normal environmental conditions exist at the plant community? Yes No ✓ Of no.explain on back) &xrkenec r a 2 r s a»,,., . Has the vegetation,soils. and/or hydrology been significantly disturbed? Yes, ✓ No (tf yes, explain on back) 1/E.Gerg oN IAA is A.CQ�• c.c.eaatee, ,1 ov-cxcx,•) A cep A_AGtes Indicator VEGETATION Indicator Dominant Plant Soecies Status Stratum Dominant Plant Species Status Stratum 1. 0.01-1t- 4-1A cc/LA(1Fe44"s CAC" SNA.ks 11. 2. tic c to i c-o to 2 FACU S#1ud 12. atits 41tzrrNs FA ( Si144 13. 4. C.1Ast.4... 4ttJet,tE W /ERd 14. s. 6oycsCTN.y r6c,.4,Art�a ?4C h'EAa , 15. 6, Sc.ra.0KT. n►cd,o cAR.P.S a6l- /-kR.8 16. 7. .1G.4.t(as Epp MS'K S 15.1 GA /-11SR4 17. 8. 18. 9. 19. 10. 20. ail Percent of dominant species that are OBL.FACW, and/or FAC 54-3 9. Is the hydroptic vegetation criterion met? Yes ✓ No Rationale: V Lt.r'.LAe1, t)146E r4rfd.l. (ALI �A ,ZP.Ecres P t C. r- SOILS • r- Series/phase: 1J o IL"A -re)"D Y t-0 4A, Subgroup:2 t�t.0 is 6-N n 4- 1l.4,1,Q 04 EP rr I Is the soil on the hydric soils list? Yes ✓ No Undetermined Is the soil a Histosol? Yes No -..- 1Histic epipedon present? Yes . No .- Is the soil: Mottled? YesT No Gleyed? Yes No es_ - Matrix Color: r 0 Y2 2 / Motile Colors: /0 r / , ii Other hydric soil indicators: 0 Is the hydric soil criterion met? Yes ✓ No Rationale: L. c_Hk..s i A tc1,Th MO Tr—es .1 HYDROLOGY — Is the ground surface inundated? Yes . No Surface water depth: I Is the soil saturated? Yes No�" Depth to free-standing water in pit/soil probe hole: Limit other field evidence of surface inundation or soil saturation. '11a.4NswPE •FR- m K.EA?sbI1Ac. •c'PR-(,+s # 06U4•14r6. Er-.t,u PkAAJr-%. Is the wetland hydrology criterion met? Yes ✓ No Rationale: F III) N c E. a F I-64 tb A R L 4-4-re4 44 r7z..-'_ JURISDICTIONAL DETERMINATION AND RATIONALE Is the plant community a wetland? Yes ✓ No Rationale for jurisdi=ional decision: P-a s t rt.-,G ( .J p t C./art 21 ,(,. ,4 t r._ 'At 2/P,rr creiz S E i This data form can be used for the Hydric Soil Assessment Procedure and the Plant Community Assessment Procedure. 2Classificaticn according to 'Soil Taxonomy.' 38.2 DATA FORM ROUTINE ONSITE DETERMINATION MET14OD1 Field Investiga�p�(s): ;',4ST A c ` Date: X( I Y'�4 `� ProjeWSlte: i-t-t ,s�s ,t u- State: W 4. County: K,-1 c- ApplicantvOwner: tea(M t uJA y r6 2w c Plant Community S/Name: S• fri,L4 ta6 it.►r it' 4 Note: If a more detailed site description is necessary.use the back of data form or a field notebook. Do normal environmental conditions exist at the plant community? Yes No (It no,explain on back) E�rde..te c r pi-r .r 4.0,,.,E Has the vegetation,soils. and/or hydrology been significantly disturbed? Yes I./No (If yes, explain on back) l)E6er4 rioa c.c.E-A cam, e vCrtc ,t,o.1..J w r ru ..)eco y S PEue s - VEGETATION . Indicator Indicator Dominant Plant Species Status Stratum Dominant Plant Species Status Stratum 1. SA•M 6 ocets AACe..woS o 1 ,4CLC S►tAu.S 11. 2, 12446 1 =P£c.r 9.t$r c.r s f 4 C S ItA't S 12. g, itutwear LAer..Jr,arNs UPI- s4A+t/. 13. Ji 4. 2as,.s u/taru�s F-4t ( S-644.-te 14. 5. C,A..sr w•• A A.4 e�+re F4CLI f>'EA6 15. 6. P e aA tit-Ar .+rt &/4C- gal" 16. 7. 17. 8. 18. 9. 19. 10. 20. ifii Percent of dominant spades that are OBL.FACW. and/or FAC .k3 9 Is the hydrophytic vegetation criterion net? Yes No ✓ Rationale: 4--S� e C. t-•A C . . a O B L- I . - SOILS �0*/th1J se-A. ,' -r A.v.,'�� Series/phase: LdA,o, Subgroup? D vs nu c- ,re,to cF/2EF fs 1 Is the soil on the hydric soils list? Yes No ✓ Undetermined Is the soil a Histosol? Yes No ✓ Histic epipedon present? Yes No '/. Is the soil: Mottled? Ye,ss No y Gleyed? Yes No f Matrix Cow; lei YK-773 ( Mottle Colors: Other hydric soil indicators: A..Ia NE. .i,' Is the hydric soil criterion met? Yes No Rationale: It/6 N c-Ftitd.i if, Al;, ,h 1 rt—c s - _I HYDROLOGY Is the ground surface inundated? Yes No Surface water depth: l Is the soil saturated? Yes No ✓ . Depth to free-standing water in pit/soil probe hole: List other fieict evidence cf surface inundation or soil saturation. s /-46 - Is the wetland hydrology criterion met? Yes No ✓ Rationale: /1Ja c d/ o 4_,a c G or riJ,c "It 4 r7d rr OR- -C A ru j4-ri a- `� JURISDICTIONAL DETERMINATION AND RATIONALE Is the plant.immunity a wetland? Yes No Rationale fcr;urisdiaional decision: It This data form can be used for the Ftydric Soil Assessment Procedure and the Plant Community Assessment Procedure. 2 Ctassificaticn according to 'Soil Taxonomy.' 8-2 • C)4 p \I I I t 1 d i ea o V w c. V 0 se as v, • 0 ` rid s N a o C o 'r o E V ".. o. g se i G Ln V E o n V '> n G _� N N N N DJ I I N I > N Lx uo 1 sE 0 - id in c J -� u • O a v. = u e a . 0 V DE e e o C u — W `'1 r - "0 '' c' c ` o /�» O O e? 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IE wr an -(ems I 1 VI VI el e. 7 v �J O s • la0 e Ea c c s u V c _ E _ 3 3 u ...E. o wa w C OD O ec! 'e C O S O 74 C o a u 15 as c e'' u ° 6.0 r� u u E . P. K. 7 'C O -, K u u `O L c w = . 4 ` p u a . u /� c u a. a. C e 3 o` 3 ' 7 _ 90 N N N I N N N I s o u ° . 3 Z 8 o E , w f + O I s. se�,. Ca CU ,� O K e - C w CaC .CE OE yy Ti r - Ti t VKV9 O Ts u LI c. I. c : u >n o a cr' s s °:y o` 0 3 o c ° C. c E. w 110: OT _ Ii ` e E 3 > > wo a II I j - — E j s c 0 ° a o c m 8 u u O. P .0 e > O. I. reO ._ IIw C 3 es o` = 3 o o u 1R c o ,ti, 0 — G O _ "V' p V C 02 o 4 c .1 E. C ^ v K ff - u w w , e` e+ ,� an eo eo m a .r en Uv m V 0 p 4 G • .=p C r _ E e` 0 0 0 E 0 `) a . s C . u A = u DI u 5 = = 3 I�] u M O OD CC wE. ~ es O t .., F., I; G. °— auo u < u c L. .Cc 'CI E- o ° u >, ,wO u I CO) C o c e c di = m 3 �c '� ° 3 ac u e . K V ■ E f0 ie a .0 3 oi > = Zp . . v ix ° a u O, a E c m - o v > c = . > 5 u 1 o . oo to H 3 7 a v O S X V '� Ya. • { w w 9 w 0 w ab ea w L O Z — MI < a f�. 0c ili L. Ueo f` oei oa — — Vn — ...., — tV Wetlands Rating Field Data Form Background Information: Name of Rater T•/C, J r7(.4 d 6 Affiliation: E reftlK Date: el/Z 319 9 `1 Name of wetland(if known): Government Jurisdiction of wetland: Cif (.1F ( o ERAL W4 y , LU,4 Location: 1/4 Section: S of 1/4 S: S t- Section: w Township:Z t Iy Range: y e Sources of Information: (Check all sources that apply) Site visit: ✓USGS Topo Map: • NWI map: v Aerial Photo: Soils survey: ./ • Other ✓Describe: 4(a ti'rf Lyra s Mrs- At la Sp ,C( S /l1 When The Field Data form is complete enter Category here: Q.1. High Quality Natural Wetland \ Circle Answers Answer this question if you have ade-quate inibrmation or experience to do so. �'"� If not find someone with the expertise to answer the questions. Then,if the answer to questions la. Ib and lc are all NO,contact the Natural Heritage program of DNR. la.Human caused disturbances. Is there significant evidence of human-caused changes to topography or hydrology of the wetland as indicated by any of the following conditions? Consider only changes that may have taken place in the last 5 decades. The Jl impacts of changes done earlier have probably been stabilized and the wetland ecosystem will be close to reaching some new equilibrium that may represent a high quality wetland. lal. Upstream watershed> 12%impervious. Yes:go to Q.2 1a2. Wetland is ditched and water flow is not obstructed. Yes: go to Q.2 1a3. Wetland has been graded. filled,logged Yes: go to Q.2 1a4.Water in wetland is controlled by dikes. weirs.etc. Yes:go to Q.2 lay. Wetland is grazed. Yes:go to Q.2 la6. Other indicators of disturbance(list below) Yes: go to Q.2 No: go to lb. 25 I lb Are there populations of non-native plants which are currently present, F go to Q.2 j cover more than 10%of the wetland,and appear to be invading native No:go to lc. populations? Briefly de:spribe any non-native plant populations and • - 1 Information source(s): H rr4 LA 5,41.4 A c.4c4-6 E T r,J✓AD r,a c. c r -eD6E of ri 6rc4, o. a6S evict, a N $rrb ..)is r r . Ic. Is there evidence of human-caused disturbances which have visibly go to Q.2 degraded water quality. Evidence of the degradation of water quality *Possible Cat. I include: direct(untreated)runoff from roads or parking lots; presence, contact DNR or historic evidence,of waste dumps;oily sheens;the smell of organic 7mica's;or lifestock use. Briefly describe: 0.1.1cP_Air- 44, e.,i.r n itsfs d EE.+ e-C.cz'te 0 .Mr a. P,4itn esk. PA✓CC, tr(t r c42.o.fs es Kp I.&ti 4,-,s• o f w&`-c.1.46 0.2_ Irreplaceable Ecological Functions: . . - • Doe s the wetland: (NO to all:go to Q.3) e have at least 1/4 acre of organic soils deeper than 16 inches __ YES go to 2a . and the wetland is relatively undisturbed;OR [IIf the answer is NO because the wetland is disturbed briefly describe: - Indicators of disturbance may include: -Wetland has been graded,filled,logged; -Organic soils on the surface are dried-out for - more than half of the year; ___ -Wetland receives direct stormwater runoff from urban or agricultural areas.]; OR C 9 have a forested class greater than 1 acre; ii Go to 2b OR ® have characteristics of an estuarine system; YES: Go to 2c OR . e have eel grass.floating or non-floating kelp beds? YES: Go to 2d 2a. Bogs and Fens Are any of the three following conditions met for the area of organic soil? i . . . 2a.1. Are Sphagnum mosses a common ground cover(>30%) and the: cover of invasive species(see Table 3)is less than 10%? Is the area of sphagnum mosses and deep organic soils> 1/2 acre? YES: Category I Is the area of sphagnum mosses and deep organic soils 1/4-12 acre? YES: Category II NO: Go to 2a.3 2a.2. Is there an area of organic soil which has an emergent class with at least one species from Table 2. and cover of invasive species is< 10% (see Table 3)? Is the area of herbaceous plants and deep organic soils> 1/2 acre? YES: Category I Is the area of herbaceous plants and deep organic soils 1/4-I/2 acre? YES: Category II ( iNO: Go to 22.3 - 26 1 • 2a.3. Is the vege n a mixture of only herbaceous plants and _agnum mosses with no scrub/shrub or forested clAcsi.s? • • Is the area of herbaceous plants,Sphagnum, and deep organic �eoils> 1/2 acre? YES: Category I Is the area of herbaceous plants,Sphagnum,and deep organic soils 1/4-1/2 acre? YES: Category II NO: Go to Q.3. • Q.2b. Mature forested wetland_ . 2b.1. Does 50%of the cover of upper forest canopy consist of evergreen YES:Category I g trees older than 80 years or deciduous trees older than 50 years? N Go to 2b.2 Note:The size of trees is often not a measure of age,and size cannot be used as a surrogate for age(see guidance). 2b2. Does 50%of the cover of forest canopy consist of evergreen trees older YES: Go to 2b.3 1 than 50 years,AND is the structural diversity of the forest high as. .--_....__- Go to Q.3 characterized by an additional layer of trees 20'-49'tall,shrubs 6'-20', • • tall,and a herbaceous groundcover? 2b.3. Does <25%of the areal cover in the herbaceous/groundcover or YES: Category I the shrub layer consist of invasive/exotic plant species from the list on p. 19? NO: Go to Q.3 Q.2c. Estuarine wetlands. - �-- 2c1. Is the wetland listed as National Wildlife Refuge,National Park, YES: Category I National Estuary Reserve,Natural Area Preserve,State Park,or NO: Go to 2c.2 - Educational,Environmental or Scientific Reserves designated under WAC 332-30-151? 2c.2. Is the wetland>5 acres; YES: Category I Note:If an area contains patches of salt tolerant vegetation that are 1)less than 600 feet apart and that are separated by mudflats that go dry on a Mean Low Tide,or 2)separated by tidal channels that are less than 100 feet wide; all the vegetated areas are to he considered together in calculating the wetland area. .1 or is the wetland 1-5 acres; YES: Go to 2c.3 or is the wetland< 1 acre? YES: Go to 2c.4 I I 27 I 2c.3. Does the wetland"meet at least 3 of the following 4 criteria: :.' YES:Categbry I NO:Category II -mii'imum existing evidence of human related disturbance such as diking,ditching,filling,cultivation,grazing or the presence of non- native plant species(see guidance for definition); { - -- -surface water connection with tidal saltwater or tidal freshwater;- - -at least 75%of the wetland has a 100'buffer of ungrazed pasture, •- open water,shrub or forest; -has at least 3 of the following features: low marsh;high marsh;tidal channels; lagoon(s);woody debris; or contiguous freshwater wetland. ' 2c.4. Does the wetland meet all of the four criteria under 2c3. (above)?.. YES:Category II NO:Category III Q.2d. Eel Grass and Kelp Beds. 2d.l. Are eel grass beds present? YES:Category I NO:go to 2d2 2d.2. Are there floating or non-floating kelp bed(s)present with greater than YES:Category I 50%macro algal cover in the month of August or September? NO:Category II to, 0.3. Category IV wetlands. 3a. Is the wetland:less than 1 acre and, hydrologically isolated and, 'comprised of one vegetated class that is dominated(>80% areal cover) YES:Category IV by one species from Table 3 (page 19)or Table 4(page 20) * go to 3b 3b. Is the wetland: less than two acres and,hydrologically isolated, with one vegetated class, and>90%of areal cover is any combination of :Category IV species from Table 3 (page 19) N1 go to 3c 3c.Is the wetland excavated from upland and a pond smaller than 1 acre IV without a surface water connection to streams,lakes,rivers,or other g:gCoatotegQo4ry _1 wetland, and has<0.1 acre of vegetation. J 28 Q.4. Significant habitat value. I _ - Answer all questions and enter data re quested. Circle score,that qualify r 4a. Total wetland area Esthnate area,select from choices in the near-right column,and score in the >200dril - far column: 40-200 5 10-40 4 Enter acreage of wetland here:77And acres.and source:AlJ/ Mat • 5- 10 3 I -5 2 - ' 0.1 - 1 I •. "' <0.1 0 4b. Wetland classes: Circle the wetland classes below that qualify: 1 kQfpen Watea if the area of open water is> 1/4 acre Aquatic Beds: if the area of aquatic beds> 1/4 acre, ...... e rge if the area of emergent class is> 1/4 acre, -• - . #of classes Paints • 1 0 • • lib-Shrut if the area of scrub-shrub class is> 1/4 acre, 2 3 .3 6 .•rested�f area of forested class is> 1/4 acre, ": 4......Q1 t- . 5 10 Add the number of wetland classes.above.that qualify,and then = " I score according to the columns at right._ e.g.If there are 4 classes(aquatic beds,open water.emergent& - r scrub-shrub),you would circle 8 points in the far right column. 1 4c. Plant species diversity. - 1 For each wetland class(at right)that qualifies in Crass #species in class Points I 4b above,count the number of different plant species Aquatic Bed -. 1 0 you can find that cover more than 5%of the ground. : 2 1 You do not have to name them. 3 2 >3 3 Score in column at far right: e.g.If a wetland has an aquatic bed class with 3 species. Emergent 1 0 an emergent class with 4 species and a scrub-shrub 2-3 0class with 2 species you would circle 2,2,and 1 in the 4-5 2 - far column. --- -- >5 3 Note:Any plant species with a cover of>5% qualifies for points within a class,even those Scrub-Shrub 1 0 that are not of that class. 2 1 3-4 c) j >4 3 Forested 1 0 2 1 3-4 2 1 >4 a t I 29 I • 4d. Structural diversity. If the wetland has a forested class,add I point if each of the following classes is present within the forested class and is Jarger than 1/4 acre: -trees>50' tali YES -trees 20'-49' tall YES -shrubs YES -herbaceous ground cover YES CD Also add 1 point if there is any"open water"or"aquatic bed"class immediately next to the forested area(ie.there is no scrub/shrub or emergent vegetation between them). YES-CD 4e. Decide from the diagrams below whether interspersion between High wetland classes is high, moderate.low or none? If you think the Moderate -3 amount of interspersion falls in between the diagrams score accordingly Low- 1 (i.c. a moderately high amount of interspersion would score a 4, None -0 - while a moderately low amount would score a 2) • �hh rj - „ki•2ci2i iiiwe'\'"y s" .. \'Oa)i»ii22;,aia.'w": .di'.•.. • • N. - J •— ----- none _.-- low low C ♦ ♦•S.•\ / / / / / ,,,,;: /•/•/ /•/ cr ....] moderate moderate high 4f. Habitat features. Answer questions below. circle features that apply, and score to right: • Is there evidence that the open or standing water was caused by beavers YES = 2 Is a heron rookery located within 300'? YES = 1 Are raptor nests located within 300'? YES = 1 , Are there at least 3 standing dead trees(snags)per acre greater than ....11] 10" in diameter at"breast height"(DBH)'l. YES = 1 Arc there at least 3 downed logs per acre with a diameter >6" for at (cast l0' in length? YES = 1 jArc there areas (vegetated or unvegctated) within the wetland that arc pondcd for at least 4 months out of the year,and the wetland has not qualified as having an open water class in Question 4b. '. YES =2 1. 30 I 4g. Connectio streams. (Score one answer only.) 4g.1. Does the wetland provide habitat for fish at any time of the year AND — k. does it have a perennial surface water connection to a fish bearing stream. YES Q 4g.2 D9es the wetland provide fish habitat seasonally AND does it have a seasonal surface water connection to a fish bearing stream. YES=4 4g3 Does the wetland function to export organic matter through a surface water connection at all times of the year to a perennial stream. YES=4 4g.4 Does the wetland function to export organic matter through a surface • water connection to a stream on a seasonal basis? • YES=2 4h.Buffers. Score the existing buffers on a scale of 1-5 based on the following four dc..scriptlons. :' - If the condition of the buffers do not exactly match the description,score either a point higher or lower depending on whether the buffers are less or more degraded. Forest,scrub,native grassland or open water buffers are present for more than 100'around 95%of the circumference. Score=5 Forest,scrub,native grassland,or open water buffers wider than 100' .' for more than 1/2 of the wetland circumference,or a forest,scrub. grasslands,or open water buffers for more than 50'around 95%of the circumference. • Score 3 I rForest,scrub,native grassland,or open water buffers wider than 100' • ;�._ for more than 1/4 of the wetland circumference,or a forest,scrub,native — -- - grassland,or open water buffers wider than 50'for more than 1/2 of the wetland circumference. - Score=2 INo roads. buildings or paved areas within 1(X)'of the wetland for more than 95%of the wetland circumference. Score=2 ;; No roads, buildings or paved areas within 25'of the wetland for more w than 95% of the circumference,or No roads buildings or paved areas within 50'of the wetland for more than j1/2 of the wetland circumference. Score= I Paved areas, industrial areas or residential construction(with less than 5(Y lbetween houses) are less than 25 feet from the wetland for more than 95% of the circumference of the wetland. Score=() I] tI 1 31 1 • • , . . .. .._ ... _ .. ...__.... _ • . . , . 41. Connection to other habitat areas: I - 1 _ ) Select the description which iest-inatctittlthe Site being evaluatal. C.: I 1 • -Is the 1.vetlalact connected to,or part of,a riparian corridor at least IW wide connecting two or more wetlands;or,is there an upland connection present>100" ' ,wide with good forest or shrub cover (>25%cover).connecting it with a ;Significant Habitat Area? YES 4.) .. . . I ; -Is the wetland connected to any other Habitat Area with either I)a forested/shrub . . . corridor<1(Xt wide.or 2)a a corridor that is> 100'wide.but has a low vegetative ' 1 , cover less than 6 feet in height? __ YES=3 -Is the wetland connected to.or a part of.a riparian corridor between 50- 100'wide 1 ,,with scrub/shrub or forest COWS comu.xtion to other wetlands? . . YES=3 ... . -Is the wetland connected to any other Habitat Area with narrow corridor(<I(X)') , 1 of tow vegtlation(<6 in height)! , _ .. _ . ..,. . YES= . . ''.-Is the wetland and its buffer(if the buffer is less than 50'wide) completely isolated - by development(urban,residential with a density greater than 2/acre,or industrial)? : YES=0 I . . , Cf Ot-! Now add the scores circled(for 0-5a-0.5i above)to get a total. Is the Total greater than onkqual to 22 points? . (-_ _=.Category II NO=Category III (-- .1 .- 1 . . -I i • . j I j (..._ i 32 1 . . ATTACHMENT E crrir of lalluiMEMPPLE PUBLIC WORKS MEMORANDUM TO: Barbara Simpson, Park Planner FROM: Jim Solaegui, Traffic Analyst L4 �'`'`— DATE: March 24, 1994 SUBJECT: Parking Requirement for City Park with Historic Cabins, 4.19 Acre Site Increasing the area of the park to 4.19 acres will result in the requirement for an additional three (3) parking spaces over the March 16th memo bringing the total to seven (7) parking spaces. memos\cabinprk • q✓ PUBLIC WORKS MEMORANDUM TO: Barbara Simpson, Park Planner FROM: Jim Solaegui, Traffic Analyst C(9 J DATE: March 16, 1994 SUBJECT: Parking Requirement for City Park with Historic Cabins This memorandum covers the parking requirements for a three quarter acre park site (including one half acre of on-site wetland) containing two historic cabins. The possibility of interpretive tours occurring at the site was included in the analysis. No parking data was provided in the 2nd Edition of ITE Parking Generation so it was decided to extrapolate parking usage from trip generation data from the 5th Edition of ITE Trip Generation. Land uses most closely fitting the description of this park were City Park, Land Use 411, County Park, Land Use 412, and Historical Monument, Land Use 418. The Historical Monument land use fit the general historical theme of this park but the data was developed mostly for sites much greater than 100 acres in size so the applicability was doubtful. The City and County Park expected trip generation rates were calculated for the weekday and Sunday twenty-four hour time period. Sunday trip generation was included since recreational usage of a site of this type is most likely to occur during most individuals' free time and not during the weekday peak traffic periods. Weekdays are expected to generate approximately two trips and Sundays generate four trips. A trip is a single movement into or away from the generator, or park, in this case. Two trips account for a single vehicle entering then exiting the park site. Sunday peak usage will typically require parking for two vehicles. In the worst case, two parking spaces would be required. Interpretive tours will randomly visit the site but the frequency of the visits and number of visitors at one time is expected to be low. The tour frequency is low enough to be insufficient to require extensive parking coverage. Four parking spaces should adequately serve the vast majority of the parking needs for the site. memos\cabinprk r, TA CH 'ATTACHMENT F 1 TECHNICAL INFORMATION J REPORT FOR HISTORIC CABIN PARK PREPARED FOR: THE ROPER COMPANY 34004 9TH AVE. SO. BLDG. A FEDERAL WAY, WA 98003 (206)874-2064 I PREPARED BY: ESM, INC. 34004 - 9TH AVENUE SO., BLDG. A FEDERAL WAY, WA 98003 (206)838-6113 August 8, 1995 JOB NO. 217-05-001 11 Historic Cabin Park Job No. 217-05-001 1 i 1 Table of Contents Page I Project Overview 1 Drainage Requirements 2-5 1 Figure 1 -TIR Worksheet 6-7 Figure 2 -Vicinity Map 8 1 II Preliminary Conditions 9 Figure 3 - Overall Drainage Map 10 Figure 4 - Soils Map & Description 11-12 III Off-Site Analysis 13-14 IIV Detention/Retention Analysis and Design 15 Part A-Existing Site Hydrology 16 Part B -Developed Site Hydrology 16 IPart C -Hydrologic Analysis 16-19 Part D -Retention/Retention System 16 i Figure 5 20 Part E - Biofiltration - Bioswale Calculation Worksheet 21-24 V Conveyance System Analysis and Design 25-28 VI Special Reports N/A IVII Basin and Community Plan Area Hylebos Creek IVIII Other Permits N/A IX Erosion/ Sedimentation Control Design 29-30 IX Bond Quantity Worksheet and R/D Facility Summary Sheet N/A IXI Maintenance and Operations 31-32 Appendix IWest Branch Hylebos Creek: Water Features Map Problem Conditions I WH-6: Nonpoint Source Water Quality Control Program Wallet: Layout and Grading Plan I Historic Cabin Park Job No. 217-05-001 I I I I I I I I 1 Section I Project Overview 1 Historic Cabin Park Job No. 217-05-001 I PROJECT OVERVIEW g- FOR HISTORIC CABIN PARK 1 Existing Site The existing area of the project is approximately 1.5 acres in size. The site lies directly Isouth of the intersection of So. 348th Street and 4th Place So. in the City of Federal Way. The existing conditions at the site are composed of the existing historic cabin, driveways, heavy brush around the rear of the site, a few trees. The site slopes approximately 7% from the northwest corner to the southeast corner. I The soils on the site, according to the King County Soils Report, are classified as Everett - Alderwood gravelly sandy loam. For purposes of runoff potential, we have assumed Hydrologic Soil Group "C" (Everett Soils can in a"A or B" Soil Group, and Alderwood is Ia"C" Soil Group). Proposed Condition The proposed n of the conditions is intended to cover the maximum development potential of this site. IThe proposal is to construct a paved parking lot with a total maximum area of approximately 8,150 square feet. In addition, there would be 2,300 square feet of 1 concrete sidewalk, and approximately 5,000 square feet of Cintrek path. The remaining .; site area of approximately 50,000 square feet would be existing native vegetation or landscaping. Drainage Requirements The following is the Core and Special Requirements in Chapter No. 1 of the King County I Surface Water Design Manual (KCSWDM). ICore Requirement No. 1 - Discharge at the Natural Location. Currently the site discharges along the east and south sides of the site, Iunconcentrated. There is a small swale which starts near the northwest corner and ends near the southeast corner. 2 I I Historic Cabin Park Job No. 217-05-001 I I The proposal will continue to discharge at the natural locations. The small swale willte replaced with a biofiltration swale for the asphalt area, discharging near the existing discharge point (see Figure 5 Developed Conditions Plan). Core Requirement No. 2 - Offsite Analysis An offsite analysis is required for this site because more than 5,000 square feet of stormwater runoff will be collected and concentrated. A Level One Analysis is provided further herein. Core Requirement No. 3 - Runoff Control There is potentially more than 5,000 square feet of impervious surface subject to vehicular use; therefore, biofiltration is required per KCSWDM. Storm water detention is not required for the current project because: 1) There is a "negligible i,,)co123-`e, peak runoff rate increase" as defined by the KCSWDM, and 2)SEPA was not / 5 04 -F,t required, and therefore the conditions of the Draft Hylebos Creek and Lower �� , fl°�' Puget Sound Basin plan were not implemented. yet 15 For this analysis, we have assumed that there is no off site drainage which flows to this site. This is confirmed with visual observation. Core Requirement No. 4 - Conveyance System There is no off-site conveyance system conveying flows to the site. The proposed plan calls for collecting the storm drainage from the proposed asphalt area and conveying it into a biofiltration swale which would discharge in another pipe than onto a energy dissipator before flowing to wetland buffer area. Core Requirement No. 5 - Erosion / Sedimentation Control Plan. A plan has been prepared for erosion and sediment control. Core Requirement No. 6 - Maintenance and Operation. See page 29-30 Core Requirement No. 7 - Bonds and Liability ' Does not apply. 3 ' Historic Cabin Park Job No. 217-05-001 Spacial Requirement No. 1 - Critical Drainage Area Does not apply. Special Requirement No. 2 - Compliance with an Existing Master Drainage Plan Does not apply. Special Requirement No. 3 - Conditions Requiring a Master Drainage Plan i Does not apply. Special Requirement No. 4 - Adopted Basin or Community Plans 1 Does not apply. Special Requirement No. 5 - Special Water Quality Controls Because the site will not collect runoff from more than one acre of impervious surface, a wetpond is not required. A standard biofiltration swale is required because of the 5,000 square foot threshold. Special Requirement No. 6 - Coalescing Plate/Oil Water Separators Because the site does not exceed five acres of impervious surface, this requirement does not apply. Special Requirement No. 7 - Closed Depression Does not apply. I Special Requirement No. 8 - Use of Lakes,Wetlands, or Closed Depressions for Peak Runoff Control Does not apply. Special Requirement No. 9 - Delineation of 100 Year Flood Plain IDoes not apply. 4 IHistoric Cabin Park Job No. 217-05-001 I Special Requirement No. 10 - Flood Protection Facilities for Tyne 1 and 2 Streams Does not apply.Special Requirement No. 11 - Geotechnical Analysis and Report IDoes not apply because no infiltration systems are proposed for this project. Special Requirement No. 12 - Soils Analysis and Report Is not anticipated as being necessary as the King County Soil Survey should be 1 satisfactory for design purposes, i.e., for determining soil types. I I I I 1 I I I I 5 1 Historic Cabin Park Job No. 217-05-001 I I i i 1 Page 1 of 2 King County Building and Land Development Division ` TECHNICAL INFORMATION REPORT (TIR) WORKSHEET PART 1 PROJECT OWNER AND PART 2 PROJECT LOCATION ., PROJECT ENGINEER AND DESCRIPTION Project Owner C i--Y or FaDug.r . U Project Name Ni crow i c CAe r P.- Address 3 3 5 5 U 1 Sr c..iro*? Souxl, Location 1 Phone 20Co -tee.. 1 -40 00 Township 'I Nam Project Engineer S-rNaicr 5c.1,..u.o.+8.r»wt../ Range ¢ ems T Section 5 u) A 0 Company sm,1rsC., Project Size loS ao0 AC 1. 5 Address Phone 2O 8 e B -�t(3 Upstream Drainage Basin Size 0 AC 0 PART 3 TYPE OF PERMIT APPUCATION PART 4 OTHER PERMITS n Subdivision Q DOF/G HPA Q Shoreline Management 1 n Short Subdivision Q COE 404 i ! Rockery Grading Q DOE Darn Safety I I Structural Vaults Q Commercial Q FEMA Floodplain I I Other Q Other FA IN() Q COE Wetlands Q HPA L I IPART 5 SITE COMMUNITY AND DRAINAGE BASIN Community GTTL-i OF Fe-couu4-C� (-do-Li 1 Drainage Basin L,J Es T C3 r2 f9-rd ct•F N `(C e!30 5 Cx.ee_k- Sc.(6 0 r9-g g%) PART 6 SITE CHARACTERISTICS 1 Q River Q Floodplain Q Stream ® Wetlands 0 Critical Stream Reach Q Seeps/Springs 1 0 Depressions/Swales Q High Groundwater Table 0 Lake Q Groundwater Recharge ED Steep Slopes = Other IQ Lakeside/Erosion Hazard PART 7 SOILS Soil Type Ever-61T/M.4t .000 Slopes Erosion Potential Erosive Velocities "C " O — /D% Sf.rcWT ,moo I Ill Additional Sheets Attatched I 1/90 FIGURE 1 6 Page 2 of 2 King County Building and Land Development Division TECHNICAL INFORMATION REPORT (TIR) WORKSHEET PART 8 DEVELOPMENT LIMITATIONS REFERENCE LIMITATION/SITE CONSTRAINT Ch.4-Downstream Analysis NOn16 — s►-1-6 O;s c!�me cc. YID 1 w t� i Q Additional Sheets Attatched PART 9 ESC REQUIREMENTS MINIMUM ESC REQUIREMENTS MINIMUM ESC REQUIREMENTS J DURING CONSTRUCTION FOLLOWING CONSTRUCTION Sedimentation Facilities ® Stabilize Exposed Surface 0 Stabilized Construction Entrance IT Remove and Restore Temporary ESC Facilities X Perimeter Runoff Control ® Clean and Remove All Silt and Debris Clearing and Grading Restrictions Ensure Operation of Permanent Facilities 1 0 Cover Practices Flag Limits of NGPES j Construction Sequence Other Other PART 10 SURFACE WATER SYSTEM Grass Lined Channel Tank 0 Infiltration Method of Analysis Pipe System 1 Vault r1 Depression S 6 U.4-t L=_1 Open Channel >41 Energy Dissapator Flow Dispersal Compensation/Mitigation Dry Pond l _I Wetland Waiver of Eliminated Site Storage Wet Pond 0 Stream Regional Detention Brief Description of System Operation As pHe-r-i Ru►-+ate co Iles 7-cc , o; s y7 � r.►� -Tc� t3 i o F Z'Ex.rr- - S w w-(.L / to s Ot t-w►a9 c TO DJ v(Con-p Q ►Suer F�c. Facility Related Site Limitations Q Additional Sheets Attatched Reference Facility Limitation IPART 11 STRUCTURAL ANALYSIS PART 12 EASEMENTS/TRACTS (May require special structural review) fJ Drainage Easement I 0 Cast in Place Vault 0 Other n Access Easement 0 Retaining Wall n Native Growth Protection Easement Rockery>4'High I-1 Tract ' Structural on Steep Slope fl Other PART 14 SIGNATURE OF PROFESSIONAL ENGINEER I I or a civil engineer under my supervision have visited the site. Actual site conditions as observed were incorporated into this worksheet and the I►I� attatchments. To the best of my knowledge the information provided Z. 7 `/S here is accurate. \ Sigm/0M. FIGURE 1 1/90 7 ! 31E+1, '-, , ,..,,,,,_. .,-.'/0---76 .-'' ,,SO: •••.- ,.. .5:7ta.. - •. ' vf --- ERA L — ,.. .)ii''....,, T. 5.18 _ al :3-. .'31 i 2283 5 ...,1 7 ''c...•.. ,.. . .. F. IMP .., $6 „. , •.',' L 2\V. P .‘'. 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',..-,-; -.•.,;..;.--;::::,33-17';',,.--I''I'11'•-•:!---'1.4,1=',14-1'1..r-,71-24:---- ‘.7-,t---.......--„--;;-7-.;..--.--77-----,-,----:::-:-.-,2:-........- ..,:„_.:. , .. • hi , BIRCH ST .........d..__----L'--.. _..... -. ..„...-.,z. , , BR:"S. zillik RC E ,09 .6014'1.1 -II. . Itry ST H 5 E - :ME 11) ST 7 - EHE•L! < , 'I 6IF'8,9:-.. r...... am,_,..._ __„:,,.... EMERALD - ! 5 >- • • JOSTH AV CT f 'Li r ". _ -,1111.111_I ; 1.. . R .. ..c- - 6 .,.., 13 -h < .- . r, ..._ =1 4 1 _ : = , 7Th ,.,..,;;..., Vicinity Map _ oi, i 21 wy I ' 1 I ,, 9TH ..,'..........._ _ Figure 2 4. - .:. 1.,•...%,,, .__ . _„.,...,..,.,...... ... .. - I I 1 I I I I 1 Section II Preliminary Conditions 9 Historic Cabin Park Job No. 217-05-001 I I 61 n 4 I \ Z N N xl \ H Qx W xa I I p,Zim W i CC J Q ZQ x / 'N CH I -. _,_ / i n n I 3 X \ x N CI N Y# I 00 N I'I I \. ( x \\..( \ I ... (--\ 1 Nx 1 �\ �,1 N rn \� ` \ I ! N x 1 �_ �_ �— N ' ' N �� — N \ \ x \ / x `\ CD \ J T ... , I 1 , 1 , o 1 m N o. ,,o ` x 1 nx 1 -x X i ),K:2___,....: i ---- 1 N n X N \ N N „Hi— ao x /r-- n N N Nx t \ 14____DP'x /t 1—,.. 1 4.... ........c.... .. _____ i M {OX 1 N N ' N ` N X N 13A INq . \ '_ X ID w �0 Nsi. �_ N N .., ........, J/ N 3 °- r � x N /1 N X iiN N.t x x c.; I ...,,, (..._________________ Jr — , , _____ , 0 'N x • / ' • ____ l .... J C I ! � 3 N - --. Sm v Ws- Cam"' �.rs ' .i /!r ( k °•• 7 .I n I ..c•. Park I��' ,r-• • I - / . 384/// I Yam. Y. j . /Evergreen e- O +'�,�•. •ill �'' I Sk ▪ r Airport,;:-•/... I , ,,...,..i..... ,.. - ,,,,:.- AgB4 rr.• i •? A•• 1 • ( QSk II- LL/ 1 ' ! i/' ' _s. • u EvC ') z.•__ i• i" • - / - t='b f;h' �� AgD T r 1 t - o Sm ,y�; y O �; r j .er .�,oko t 1 Pa •r r==== I :, �- La `s iFr; • 1. ____ rs1i'ci ) - li" „---.' - /'%� 1• I Pan er I � •' �' 21 No (t3 //%a • , i Sch IE▪vC S �II p : I. AgC 0 I ./,r�' 11 EwC r Ur 27, . 0, //.,s Ili . �) .. AgC $ Zsey .0 .,1 ), •,, Broo L .; ` ' • •.moo - r:• •-•• ,. AgD L No % �.. ,Ij, C' . Sk i i:— iii IFIAISIII ce:' Age 11116 . ook --• EvD • Lake j • �1 Ur EvC•• E. _�.II.1\ EwC r 206 1-1 �4 �.. . 5 '.. :'...1::.:11. i! .,:..7:477'1`.,• 4- • 1• I1' I 1 • \ Ag'� .\.. �akels•. i r -� 28 ; :,, oil. 1 l' 30 -�. -ma's 0 iW' ._ �, • i No• 29 1- , •J54�' • • 1 K / i AgB • I �,'7Z------\ \ / \ Sm • ,, '1 iSm "—^\: till •} n II 4 Maid" - Lake gD ....».. ..�I: . ir- ,.ill . . 3y611� II Bhp •�� I ��iiii tr---' �� )) 'I C 0 I� — ,\\ I KPB U' °� I' - ` = •�� • b_ a�� '-- oji ' . Sk' • it p . 411:11.,÷ • • V •Iiir If • • - . ; _ i ii . 0 ,„ ..: ,i .: 7. . ,t7 , ,,, 1 1 . . I_ �Q�• C., � EvD Ir' I o-SSk •1 I' I I• �` �� C� /No \jAgC • / R i - _1376 W G Bh • / AgC11:)- fi I I•I. N. I J`J. • Ir . t. - t Radio Trailer .Op ,.. 2 'Tu i:. ,l Quarr ='r' °Towers Park. ` 7' _ EvC_ - KPB L. svf) KPBJ .g.4. AgC •�� r AgC .. ....,‘ ... , , , ;.,. • „„ , . . 4., ,,,.. . • . . „. . ., .,• ,,., , , VI : ii::..1 : ...'..n.. e�- •�: .��:'••;.„ ' 'I 6 ,• '. • i. • •_ri:It- • •C • • •,,. . 1 '' ., li3 I•i�•I„•.:1. -5- King County Soils Map :I: : .;. 6 ...i �i • .• y \ _ Figure 4 11 gravelly coarse sand to very gravelly loamy sand. the presence of a consolidated substratum at a dep- Depth to the IIC horizon ranges from 18 to 36 of 7 to 20 feet. This substratum is the same mate- inches. rial as that in the Alderwood soils. l Some areas are up to 5 percent included Alderwood Some areas are up to 5 percent included Norma, soils, on the more rolling and undulating parts of Seattle, and Tukwila soils, all of which are poorly the landscape; some are about 5 percent the deep, drained. sandy Indianola soils; and some are up to 25 percent Runoff is slow to medium, and the erosion hazarc 1 Neilton very gravelly loamy sands. 'Also included is slight to moderate. in mapping are areas where consolidated glacial till, Most of the acreage is used for timber. Capabil which characteristically underlies Alderwood soils, ity unit VIs-1; woodland group 3f3. is at a depth of 5 to 15 feet. I Permeability is rapid. The effective rooting depth is 60 inches or more. Available water capac- ity is low. Runoff is slow, and the erosion hazard Indianola Series is slight. The Indianola series is made up of somewhat This soil is used for timber and pasture and for urban development. Capability unit IVs-1; woodland excessively drained soils that formed under conifer in sandy, recessional, stratified glacial drift. group 3f3. These undulating, rolling, and hummocky soils are c terraces. Slopes are 0 to 30 percent. The annual .i Everett gravelly sandy loam, 5 to 15 percent precipitation is 30 to 55 inches, and the mean slopes (EvC) .--This soil is rolling. Areas are annual air temperature is about 50° F. The frost- irregular in shape, have a convex surface, and range free season is 150 to 210 days. Elevation ranges from 25 acres to more than 200 acres in size. Run- from about sea level to 1,000 feet. off is slow to medium, and the erosion hazard is In a representative profile, the upper 30 inches 1 slight to moderate. is brown, dark yellowish-brown, and light olive- Soils included with this soil in mapping make up brown loamy fine sand. This is underlain by olive no more than 25 percent of the total acreage. Some sand that extends to a depth of 60 inches or more areas are up to 5 percent Alderwood soils, which (pl. I, right) . overlie consolidated glacial till; some are up to Indianola soils are used for timber and for urbL 20 percent Neilton very gravelly ],oamy sand; and development. some are about 15 percent included areas of Everett soils where slopes are more gentle than 5 percent Indianola loamy fine sand, 4 to 15 percent slops I and where they are steeper than 15 percent. (InC) .--This undulating and rolling soil has convey This Everett soil is used for timber and pasture slopes. It is near the edges of upland terraces. and for urban development. Capability unit VIs-1; Areas range from 5 to more than 100 acres in size. woodland group 3f3. Representative profile of Indianola loamy fine J Everett gravelly sandy loam, 15 to 30 percent sand, 4 to 15 percent slopes, in forest, 1,000 feet west and 900 feet south of the northeast corner of slopes (EvD) .--This soil occurs as long, narrow sec. 32, T. 25 N. , R. 6 E. : areas, mostly along drainageways or on short slopes 1 between terrace benches. It is similar to Everett O1- 3/4 inch to 0, leaf litter. gravelly sandy loam, 0 to 5 percent slopes, but in B2lir--0 to 6 inches, brown (10YR 4/3) loamy fine most places is stonier and more gravelly. sand, brown (10YR 5/3) dry; massive; soft, Soils included with this soil in mapping make up very friable, nonsticky, nonplastic; many I no more than 30 percent of the total acreage. Some roots; slightly acid; clear, smooth boundary. areas are up to 10 percent Alderwood soils, which 4 to 8 inches thick. overlie consolidated glacial till; some are up to 5 B22ir--6 to 15 inches, dark yellowish-brown (10YR percent the deep, sandy Indianola soils; some are 4/4) loamy fine sand, brown (10YR 5/3) dry; I up to 10 percent Neilton very gravelly loamy sand; massive; soft, very friable, nonsticky, non- and some are about 15 percent included areas of plastic; common roots; slightly acid; clear, Everett soils where slopes are less than 15 percent. smooth boundary. 6 to 15 inches thick. Runoff is medium to rapid, and the erosion hazard C1--15 to 30 inches, light olive-brown (2.SY 5/4) I is moderate to severe. loamy fine sand, yellowish brown (lOYR 6/4) Most of the acreage is used for timber. Capa- dry; massive; soft, very friable, nonsticky, bility unit VIe-1; woodland group 3f2. nonplastic; common roots; slightly acid; gradual, smooth boundary. 12 to 17 inches Everett-Alderwood gravelly sandy loams, 6 to 15 thick. percent slopes (EwC) .--This mapping unit is about C2--30 to 60 inches, olive (SY 5/4) sand, light equal parts Everett and Alderwood soils. The soils brownish gray (2.5Y 6/2) dry; single grain; are rolling. Slopes are dominantly 6 to 10 percent, loose, nonsticky, nonplastic; few roots; I but range from gentle to steep. Most areas are slightly acid. Many feet thick. irregular in shape and range from 15 to 100 acres or more in size. In areas classified as Everett There is a thin, very dark brown Al horizon at soils, field examination and geologic maps indicate the surface in some places. The B horizon ranges I 16 I Figure 4 ' 11" -1 117 J I 1 j 1 I Section III Off-Site Analysis 13 Historic Cabin Park Job No. 217-05-001 I • 1 1 : ? Level 1 Downstream Analysis As stated previously, runoff from the site discharges along the east and south sides of the site, directly into the buffers of the West Hylebos Wetland. From that point, water will travel through the wetland approximately one-half mile south to S. 356th Street. j Flows concentrate before and within the wetland area, along with two Class III streams that combine to become a Class II Stream before leaving Hylebos Wetlands. Reference: Hylebos Creek and Lower Puget Sound Basin Plan, Section 4.1. I 1 A .] I I I I 14 Historic Cabin Park Job No. 217-05-001 I fi I I I l I I I I I ' Section IV Detention /Retention Analysis and Design ' 15 Historic Cabin Park Job No. 217-05-001 Detention /Retention Analysis and Design Part A : Existing Site Hydrology Existing conditions include: "CN" soil class number= 86 "CN" for asphalt or roof= 98 SBUH Methodology, Type lA Part B - Developed Site Hydrology "CN" soil class number= 86 "CN" for asphalt or roof= 98 SBUH Methodology= Type lA Part C -Hydrology Analysis: Analysis of the site was conducted using "Waterworks", a hydraulic software package was used to analyze the site in compliance with the requirements of the King County Surface Water Design Manual (1990) requirements. The runoff rates calculated for different storm events are summarized below: Peak Runoff Rates Storm Event Original Proposed Condition Condition 2 YR./24 HR 0.11 cfs 0.21 cfs 25 YR./24 HR 0.28 cfs 0.45 cfs 100 YR. /24 HR 0.38 cfs 0.60 cfs The following printouts show the results of the runoff calculations and biofiltration swale design. Part D - Detention/Retention System : See Core Requirement # 3, page 2. Part E - Biofiltration : See the following sheets. I 16 Historic Cabin Park Job No. 217-05-001 I 7 25 95 ESM Incorporate- page 1 / / P P 5 HISTORIC CABIN PARK 1 BASIN SUMMARY k BASIN ID: EX-2 NAME: Igallai CONDITIONS - 2 YEAR SBUH METHODOLOGY TOTAL AREA • 0. 98 Acres BASEFLOWS: 0. 00 cfs RAINFALL TYPE TYPE1A PERVIOUS AREA PRECIPITATION • 2 . 10 inches AREA. . : 0.98 Acres TIME INTERVAL 10. 00 min CN • 86. 00 TIME OF CONC • 41. 87 min IMPERVIOUS AREA I ABSTRACTION COEFF: 0. 20 AREA. . : 0000 Acres CN 98 .. 0 TcReach - Sheet L: 280,. 00 ns:0.4000 p2yr: 2 . 10 s: 0. 0500 PEAK RATE: 0. 11 cfs VOL: 0. 08 Ac-ft TIME: 490 min 1 I BASIN ID: EX100 NAME: EXISTING CONDITION 100 YEAR SBUH METHODOLOGY TOTAL AREA • 0. 98 Acres BASEFLOWS: 0. 00 cfs I RAINFALL TYPE PRECIPITATION TYPE1A PERVIOUS AREA 4 . 10 inches AREA. . : 0. 98 Acres• TIME INTERVAL 10. 00 min CN • 86. 00 TIME OF CONC • 41. 87 min IMPERVIOUS AREA 1 ABSTRACTION COEFF: 0. 20 AREA. . : 98.. 00000 Acres CN TcReach - Sheet L: 280. 00 ns: 0. 4000 p2yr: 2 . 10 s: 0. 0500 PEAK RATE: 0 . 38 cfs VOL: 0. 21 Ac-ft TIME: 490 min 1 1 BASIN ID: EX25 NAME: EXISTING CONDITIONS 25 YEAR SBUH METHODOLOGY TOTAL AREA • 0. 98 Acres BASEFLOWS: 0. 00 cfs I RAINFALL TYPE TYPE1A PERVIOUS AREA PRECIPITATION • 3 . 40 inches AREA. . : 0. 98 Acres TIME INTERVAL 10. 00 min CN • 86. 00 TIME OF CONC • 41. 87 min IMPERVIOUS AREA I ABSTRACTION COEFF: 0. 20 AREA. . : 098.. 00 Acres CN 00 TcReach - Sheet L: 280. 00 ns: 0.4000 p2yr: 2. 10 s: 0. 0500 PEAK RATE: 0. 28 cfs VOL: 0. 16 Ac-ft TIME: 490 min I I I I I 17 • 7/26/95 ESM Incorporated page 1 • HISTORIC CABIN PARK IBASIN SUMMARY I BASIN ID:} AL-2 NAME: ALL PROPOSED 2 YEAR SBUH METHODOLOGY TOTAL AREA • 0.98 Acres BASEFLOWS: 0. 00 cfs 1 RAINFALL TYPE PRECIPITATION TYPE1A PERVIOUS AREA • 2. 10 inches AREA. . : 0. 82 Acres TIME INTERVAL 10. 00 min ' CN 86. 00 TIME OF CONC • 10. 80 min IMPERVIOUS AREA 1 ABSTRACTION COEFF: 0.20 AREA. . : 98.. 00 016 Acres CN TcReach - Sheet L: 175. 00 ns: 0. 1500 p2yr: 2 . 10 s: 0. 0812 PEAK RATE: 0. 21 cfs VOL: 0. 09 Ac-ft TIME: 480 min 1 1 BASIN ID: AL-25 NAME: ALL PROPOSED 25 YEAR SBUH METHODOLOGY TOTAL AREA • 0.98 Acres BASEFLOWS: 0. 00 cfs 1 RAINFALL TYPE PRECIPITATION TYPE1A PERVIOUS AREA • 3 . 40 inches AREA. . : 0. 82 Acres TIME INTERVAL • 10. 00 min CN • 86. 00 TIME OF CONC • 10. 80 min IMPERVIOUS AREA I ABSTRACTION COEFF: 0.20 AREA. . : 98 . 00 0. 16 Acres CN TcReach - Sheet L: 175. 00 ns: 0. 1500 p2yr: 2 . 10 s: 0. 0812 PEAK RATE: 0. 45 cfs VOL: 0. 18 Ac-ft TIME: 480 min J BASIN ID: AL100 NAME: ALL PROPOSED 100 YEAR SBUH METHODOLOGY TOTAL AREA • 0.98 Acres BASEFLOWS: 0. 00 cfs I RAINFALL TYP •E PRECIPITATION TYPE1A PERVIOUS AREA • 4 . 10 inches AREA. . : 0. 82 Acres TIME INTERVAL . 10. 00 min CN • 86. 00 TIME OF CONC • 10.80 min IMPERVIOUS AREA I ABSTRACTION COEFF: 0. 20 AREA. . : 908.. 00 16 Acres CN TcReach - Sheet L: 175. 00 ns: 0. 1500 p2yr: 2 . 10 s: 0. 0812 PEAK RATE: 0. 60 cfs VOL: 0. 23 Ac-ft TIME: 480 min I I I I I 18. 7/26/95 ESM Incorporated page 1 HISTORIC CABIN PARK BASIN SUMMARY I BASIN ID: PR-2 NAME: PROPOSED CONDITIONS 2 YEAR SBUH METHODOLOGY (parking lot area) TOTAL AREA • 0. 40 Acres BASEFLOWS: 0. 00 cfs RAINFALL TYPE TYPE1A PERVIOUS•AREA PRECIPITATION • 2 . 10 inches 10 AREA. . : . 09 Acres TIME INTERVAL . 00 min CN 860. 00 TIME OF CONC • 1.85 min IMPERVIOUS AREA I ABSTRACTION COEFF: 0.20 AREA. . : 0. 3100 Acres CN 98. TcReach - Sheet L: 177 . 00 ns: 0. 0110 p2yr: 2 . 10 s: 0. 0367 PEAK RATE: 0. 15 cfs VOL: 0. 05 Ac-ft TIME: 470 min I BASIN ID: PR-25 NAME: PROPOSED CONDITIONS 25 YEAR SBUH METHODOLOGY (parking lot area) TOTAL AREA • 0. 40 Acres BASEFLOWS: 0. 00 cfs I RAINFALL TYPE TYPE1A PERVIOUS AREA PRECIPITATION 3 . 40 inches AREA. . : 0. 09 Acres TIME INTERVAL 10. 00 min CN 86. 00 TIME OF CONC • 1. 85 min IMPERVIOUS AREA I ABSTRACTION COEFF: 0. 20 AREA. . : 98 .. 00 031 Acres CN TcReach - Sheet L: 177 . 00 ns: 0. 0110 p2yr: 2 . 10 s: 0. 0367 PEAK RATE: 0. 27 cfs VOL: 0. 10 Ac-ft TIME: 470 min I I BASIN ID: PR100 NAME: PROPROSED CONDITIONS 100 YEAR SBUH METHODOLOGY (parking lot area) TOTAL AREA • 0. 40 Acres BASEFLOWS: 0. 00 cfs 1 RAINFALL TYPE TYPE1A PERVIOUS AREA PRECIPITATION 4 . 10 inches AREA. . : 0. 09 Acres TIME INTERVAL 10. 00 min CN 86. 00 TIME OF CONC • 1. 85 min IMPERVIOUS AREA 1 ABSTRACTION COEFF: 0.20 AREA. . : 90. 31 Acres CN 8 . 00 TcReach - Sheet L: 177. 00 ns: 0. 0110 p2yr: 2 . 10 s: 0. 0367 PEAK RATE: 0. 33 cfs VOL: 0. 12 Ac-ft TIME: 470 min I I 1 I 1 1 19 0 . N .. d ♦ .. 'y ....„, N mC CO`\ r4./ , ,N O— \-----'-- ,,- ., ii 2 ''s 2 -, c.) 0. 0 .•1 I - - - .... _ - ,, -- 7 0 0 0 ., . 1 ..., , ., . .. :-$. 0 CP 0) - -------j' a.. ) -. _ _ D 0 — ... I Y T�l - I' ii-,. _ --,„N . -# -:,. . \,, . ., - r; -- * i , / 1 .'• 1 I ( '-:,'''' ,'_'._ i •, lksii ,. . ,s_.:1 __'___ . ______Awark .--- ,..\_._____o_.!),.__ I . . i __ _ ,, iiii-:?-- -- _:.,z_--- - - '_ (A : , , \)\ST-, i ,,Ili . ' --.!. °I! -1"-___ „Ai 0 ss ''''' .<1 . ,.. 0 ,, c„,,,, , : .. 1 .1 i' ,..'2\ .) • -I::l-•----. -...-- -. \• ; ,,, ,, ... y., . 1 ' i a ' -,..___, , ' ,, & *I. - ‘,,,. ,. ,,, i, . :, e _...... .. 1 e .\ •• 11 N ® _ - - I. - i I. . Lk%I kkIl I i 6 in .r t1 .,,o,.-- 0.111".. 0 ,- .,, ; I '‘ A ,_ ____,4,0 _, , i , • _)___k_k_y_ ,.._, _ , __ 1 • , , 1 .. . , ge. -____..L., _, _ __ A ... _t____ „ 0 1 , ,i.,. .t5-•-•-•Ing Ni,... lit % ' . to o 1 I weir* s ,, 010. , Et ' , 1„: 0 . , il . • T - A , ,, 0_ ., :r. /, p,.. : _ ___ 411 F, off , Q o— ,si: i 3 3a , _ l-, i\ , .. ___._____._____ __ I 3 \ i ..„ _.,_ . r....j) , . . ,. _,,,,, © 1 ! ni„.,. ..ia..i_ik, . . i:o .,,,,:...,..._ /-7(--,,, 1 (`--".. \ M0 IA,�� _______ _____ ___ _ ,,. 20 CITY OF �' 1 _ e_ vv Y - PUBLIC WORKS DEPARTMENT BIOSWALE CALCULATION WORKSHEET Project Name: Historic Cabin Park Date: 7— Project No.: . — _ By: HYDROGRAPHS 1. 2 yr./24 hr. Developed Q= 0.2 I cfs (See note) 2. 25 yr./24 hr. Developed Q= cfs 3. 100 yr./24 hr. Developed Q= '?. , cfs Note: Use developed Q if R/D is downstream of bioswale or no R/D is proposed. BIOFUNCTION DESIGN 4. Select design flow depth/vegetation type: A. Urban (Lawn) 1" Design depth = 0.08' !-B. Rural (Natural) 4" Design depth = 0.33' C. Wetland (Wet areas) 8" Design depth = 0.67' Design depth= S 3 ft. [Recommended: 0.08' or 0.33'] 5. Calculate swale Q and V even:. 1 N = 0.1 S = 0.02 Side slopes = 3:1 d = 0.08', 0.33' or 0.67' (pe: item 4, above) b = make an initial assumption. b= 3. o ft. Q = �} cfs V = . I La fps V _ Q/,8 = 3 j C.?-.� Calculated Q must be >_ item 1 Q. Calculated V must be <_ 1.5 fps. devrev\biowriah Revised: 10/6/93 1 ' 21 EQUIVALENT AREA • 1 6. If the proposed bioswale is less than 200 lineal feet in length, it may be shortened. The minimum length is 50 f t. The minimum length of any segment is 50'. 1 • 5. • Biofunction area (sq. ft.) = 200 ft.. x wettectVerimeter _ _311 c�7 = 1858 x Z�� . i to' 200 ft. x . 'L ) ft. = 40 sq. ft. Equivalent wetted perimeter = biofunction areaaproposed length 4 sq. ft. I . _ ft. = . Z 4 ft. b= 3 ft. k. ACTUAL BIOSWA7.F, CAPACITY AND VELOCITY FOR 2 YR. EVENT 7.a. Calculate swale Q given: N = 0.1 S = Actual (0.5% to 6.0%) [Recommended: 2-4%] S= . C, % Side slopes = 3:1 d = per item 4 d= ft. — b = per item 5 or 6 [Recommended: 2' min., 8' max.] b= 3... ft. /. 1 5 cfs _ sue. `o.o w !B Calculated swale Q must be >_ item 1 Q. I 7.b. Calculate swale V given: N = 0.1 S = per.item 7.a. S= • % Side slopes = 3:1 Q = per item 1 Q= i. cfs. b = per item 5 or 6 • b= 3, ft. V - 0- ltn fps v 6 j Calculated V must be <_ 1.5 fps. Travel time = length of swalelV x 60 I !-7 0 ft. / 0, 140 fps x 60 sec/min = 11.7 min. [Recommended: 9 minutes, 5 minutes minimum] devrev\biowriQf Revised: 10/6/93 2 ' 22 1 FREEBOARD FOR .1.5 YR. EVENT i y 0, !S c. s) J 8. Calculate actual flow death for 25 yr. event N = 0.027 S = Actual _ S= % Side slopes = Actual : 1 b = Actual b= 3• ft. depth required= . ;9'• ft. depth.provided= /, O ft. r, freeboard= / ft. Top of swale must be >_ 6" above 25 yr. water surface elevation. FREEBOARD AND VELOCITY FOR 100 YR. EVENT 9. Calculate actual flow depth and velocity for 100 yr event: N = 0.027 S = Actual S= ) . 2. % Ay r•-o Side slopes = Actual 3 : 1 b = per item 5 or 6 b= 3.. 0 ft. depth required= 0.9s ft. depth provided= U ft. freeboard= .7 8 ft. Top of swale must be at or above 100 yr. water surface elevation. V = S fps Calculated V must be S 5 fps. I I I I I i devtev\biowricsh Revised: 10/6/93 3 ' 23 9/25/95 ESM Incorporated page 1 HISTORIC CABIN PARK FLOWS THROUGH PIPES 3 REACH SUMMARY l : k (swale) i DITCH REACH ID No. D-100 Ditch Length: 170. 00 ft Ditch Width: 3 . 00 ft i Side Slopel : 3 . 00 Ditch Slope: 0. 0200 ft/ft Side Slope2 3 . 00 Contrib Bas: AL100 Mannings n : 0. 1000 Dn Invert : 14 . 80 ft Dn W.S. Elev: 0. 0000 Num Steps : 10 iTrib Area: 0.98 Ac. Design Flow : 0. 56 cfs Depth 0. 22 ft Vel 0. 68 fps Upstream W.S. Elev: 0. 00 ft. DITCH REACH ID No. D-2 Ditch Length: 170. 00 ft Ditch Width: 3 . 00 ft 1 Side Slopel : 3 . 00 Ditch Slope: 0. 0200 ft/ft Side Slope2 3 . 00 Contrib Bas: AL-2 Mannings n : 0. 1000 Dn Invert : 14 . 80 ft 1 Dn W.S. Elev: 0. 0000 Num Steps 10 Trib Area: 0. 98 Ac. Design Flow : 0. 19 cfs Depth 0. 12 ft Vel 0. 48 fps IUpstream W.S. Elev: 0. 00 ft. DITCH REACH ID No. D-25 I Ditch Length: 170. 00 ft Ditch Width: 3 . 00 ft Side Slopel : 3 . 00 Ditch Slope: 0. 0200 ft/ft Side Slope2 : 3 . 00 Contrib Bas: AL-25 Mannings n : 0. 1000 Dn Invert : 14 . 80 ft IDn W.S. Elev: 0 . 0000 Num Steps : 10 Trib Area: 0. 98 Ac. Design Flow : 0. 43 cfs Depth : 0. 19 ft Vel 0. 63 fps Upstream W.S. Elev: 0. 00 ft. I 1 I 1 1 1 1 24 1 I I I Section V Conveyance System Analysis and Design 25 Historic Cabin Park Job No. 217-05-001 I 1 ICOMPUTATION SHEET E JOB NO. ' ;7— c- :.D. ' :%- '—cv- 5 SHEET OF ESM inc. I . JOB NAME ri•I --l)t=1 S G 'r?i;^, i A! rFlc k-, 1 A CIVIL ENGINEERING,LAND SURVEY,AND PROJECT MANAGEMENT COMP.BY C=-5 CHK.BY CONSULTING FIRM 34004 9th Ave.So.,Bldg.A,Federal Way,Washington 98003 Federal Way 623-838-6113 • 2063 83 T061 92743619 CONTENTS �Q1-,✓�-'�''r-6 C" -en--1 / f✓L' p -� Seanle(2061 623-5911 Fax:(206183 7104 Gvk1 e c--,,axice: S`.,, cw, A 1'4 1 L.sis RI-)r') Ges %; ...r 11ee 6 r� TL._,v S• - -c— geu; c..)J •. r C 6lti--% --t-1,kc ►tY LiWC., ._07-- -r-t., Tf-e 0i Jr- -�/:!d T 11Y.) �WA. �G c, 1 /Qv 7 El91L 5c/Z vr1 r cr.4-►, 1-3'yG Ic 1 wc7 (,T c cp. s3 G F 5 1-, s PTpc L.jCLJ,(c2 +12►21 rr up : E-D gut.) Jj--� ;,,.3;=r Ti ;eam <, 0.4o F Ai ElacL 7Fri 1.- eft", rZ • t li C 5 N b e t= 1`� r2' J;_ .- K-«-'`7- c r,-) Sl.�ur= E `f'hf',2 E., t S r.- H .Sr C7 1 r_W U f- GuL\)e-e uNrQ-0r_ • Px.opos :c TrA; . ] 6, 1 i —r-k; > 1 1 •ri, t.,.,6 c•t ; F-ic(�- p►LJpo.:�.L.; rC%N,}r-(" L.,.. 0,CP �¢ ! c;-�Lq l;-j` G - n err .A sr Pi p 6 C t 2) _ '-, --cl r-P-s I9Qrc. -r-A-sr6 4, 3.4,A , k G S i•�.G/h --(see sNcl o s E,O) = 12�icr}p , 1,U ' hae-k LAiib = D;AMe.4- - t CP,o ' ,, Le-1�Jt-A w 3 ` ar_ Qx 1�%R�.�rr, wh,�l, ;s 67461,-stir_,_ I ) co, . -+l S r1 r_6 ec...r :..t s E : II •D , 71-1 k;G - '7,0 ' wtb6 I a 0. ,/.....01.1 6.; + tr �-7�n4-1';d1..) n'1p�. ��ONc S�Zc • L� Jr ec• 7r17-1a 5;2._e = (o r1 ;N , �7- < <r 2E 8/ 8/95 ESM Incorporated page 1 HISTORIC CABIN PARK I 4FLOWS THROUGH PIPES 1 REACH SUMMARY k 3 PIPE REACH ID No. P1 (from asphalt parking) From: To: l Pipe Diameter: 1. 00 ft n: 0. 0240 Pipe Length 75. 00 ft s: 0. 0087 Up invert 224 .35 ft down invert: 223.70 ft I Collection Area: 0.40 Ac. Design Flow 0. 33 cfs Dsgn Depth: 0.29 ft Pipe Capacity 1.80 cfs Design Vel 1.75 fps Travel Time: 0.72 min IPipe Full Vel 2. 29 fps PIPE REACH ID No. P2 (from swale/site) 1 From: To: Pipe Diameter: 1. 00 ft n: 0. 0240 Pipe Length 25. 00 ft s: 0. 0200 IUp invert 214.80 ft down invert: 214 . 30 ft Collection Area: 0.98 Ac. Design Flow 0. 60 cfs Dsgn Depth: 0. 32 ft 1 Pipe Capacity : 2 .74 cfs Design Vel 2 .79 fps Travel Time: 0. 15 min Pipe Full Vel 3 .48 fps 1 I I 1 I 1 I 1 1 1 2 • KING COUNTY, WAS : GTON, SURFACE WATE ESIGN MANUAL FIGURE 4.3.5C HEADWATER DEPTH FOR SMOOTH INTERIOR PIPE CULVERTS WITH INLET CONTROL — 1eo — lo,000 - 168 - 8,000 EXAMPLE (1 ) (2) (3)— 6. ENTRANCE TYPE — 156 — 6,000 0•42 inCne$ (3.5 the') 6_ a.tzo Os EDGE WITH _ — 5. — lag — 5,000 HEADWALL I 6. - — 5. ` — 4,000 rtw' MW eet r - - — 132 o tet — a. '. — 3,000 0) z.s ewe 5" — o I� — 120 - - _ Iz) 2.1 7.4 1 I � — 2,000 1 — )08 — 3. 1 •0 n feet 3 . — 96 - I,000 3. _ _ PLAN (1) - — - �_ GROOVE END WITH - 800 HEADWALL j - 8a - - - _2 — - 600 / I =2___. r 1 -- 500 � � - , ; _ 72 400 i r 2. --1 I to I e`�� _. 1 = - — 300 +*j H — 1.5 U / to Li _ — 60 v -- 200 // W 1.5 _ - PLAN (2) z - - I GROOVE END o — 54 Q�/ a - - PROJECTING /w — 100 ;. - `II. - 60 0- - 1.0 1.0 ' c� 42 U - w , N — 50 HW ENTRANCE - - - 40 — SCALE TYPE cc — 1.0 _ 9 . �....�. W ( )I r — 36 — 30 (I) Souere ledge with 3 — 9 — 33 - headwall .2 4 .212) Groove end with .LLS 2TS - 20 headwall = •8 — .8 — 30 _ 131 Groove sod - projecting - - 27 —- 10 — -.7—.1__7- — 24 - 8 — .7 - 6 To use scale (2) or (3) project - - - 5 horizontally to scale(I),then • — 21 _ a ufe straight inclined line through 0 end 0 scales,or reverse os •6 I-- .6 — 3 diustrated. — .6 IB - 2 - :. . — 15 _ — .5 5 5 1.0 12 fpG .YJG; „art = 0,33 c.F5 0 100 v1nc. G.'-f2c Sin = O.Coo c.c-s ,. 100 ye•*z I4.3.5-11 1/90 28 fi I i I I Section IX Erosion /Sedimentation Control Design 29 Historic Cabin Park Job No. 217-05-001 I 1 Erosions/Sedimentation Control Design Sediment control fencing will be placed along the downhill (south and east sides) of the site to help prevent any sediment laden waters from leaving the site. This fence will remain throughout construction phase. IA temporary gravel construction entrance will also be installed. I 1 1 i 1 I I I I I 30 Historic Cabin Park Job No. 217-05-001 I I l � 1 I 1 I I I I I I Section XI Maintenance and Operations I 31 Historic Cabin Park Job No. 217-05-001 I I Biofiltration Swale - Maintenance Schedule The following recommendations are based on the Stormwater Management Manual Ifor the Puget Sound Basin 1992 edition: The maintenance requirements for the stormwater management system are an important aspect to the success of the proposed design. Infiltration swales can be constructed to enhance the landscaping concepts as well as the aesthetics of the planned development. The vegetated swales can be visually inspected and are usually easily maintained. Inspection Schedule: When first constructed, swales shall be inspected on a monthly basis to monitor vegetation growth, erosion or sediment problems, and overall function of the system as it was designed. During the period from October 1st through March 31st, inspection shall be monthly. Once the system is functioning properly, inspection can be reduced to a semiannual basis. The occurrence of a large storm will always require special inspection of the swale and detention system. It is recommended that once the vegetation is properly established mowing be carried out regularly to maintain the desired minimum vegetation height of 4". Clippings shall be bagged and disposed in a sanitary landfill. The swale shall be inspected on a periodic basis to remove any trash or debris that could potentially block the outlet pipe, or otherwise affect the performance of the swale. The swale can be easily maintained with hand tools. Access from the south and west • side of the building with lawn mower, etc. is straightforward. I I I 32 1 1 I II I I 1 I I Appendix Historic Cabin Park Job No. 217-05-001 I Figure 4.1.1 1' WEST BRANCH HYLEBOS CREEK SUB-BASIN WATER FEATURES NN Basin Boundary -- ' NH Sub-Basin Boundary `__ --...- Sub-Catchment Boundary _ VH3 Sub-Catchment Number ! 1 ■ °r= Streams and Stream Number I -••••• Streams' - •��• ••I •••••- ) .....•Class II —.•• ORT EAST -----• Class III —.�••••-_ A..E I �I Unclassified • WH4 I ',-;_-=5 Inventoried Wetland •• _ _,A, (King County, 1983) *No Class I in Sub-Basin _ _ WH9 lir / - _ •� WHJ2 �' 3S • ,, r- WH 14 31 I i -11-• I c _.,i 1 __ �• A— b_ . _ . _ __,—_____,..-2_ LO .! \ 32— - 45 • NORTHW•� ST AR r� � _ ' SITE - ._�- - 17- WH7 t -; it t :'f ti , • Ilitte cv �`�,: _ 18-�• ' � - I— �� i �� . —'c.`\ SO UTH AREA vr s •� WH4 r _3 WH _ ` ` y' / 11 _ �. z. I It tt :., 191...-75" /1 i — • 28 of� illriP 1 • \ '1 ' : '3 cir. -• I • A-25 . • / ';i.- I Location i • —• T •— /--/ Mutor c v: I 1 :; i Figure 4.1.2 WEST BRANCH HYLEBOS CREEK SUB-BASIN - PROBLEM CONDITIONS { •••• Basin Boundary -, •••• Sub-Basin Boundary L Sub-Catchment Boundary ,__- 11/119 Sub-Catchment Number I i •••• j E °_:=E- Streams and Stream Number • • ' " � . ///, Flooding • •. ,,•' ' i� Erosion/Sedimentation -- �•' NM Habitat • -- ` WH 1 Water Duality ' l jEl , 7-7 1 — WH9. • 1 l _1 •• Wi�2 0 , / ' �••'•�''.•' WHO 1• �t c!i•''' • — — , _ ^ _a -- _ - V -y — W sb WH 14 `' �' wY , • C,,41 ` ] ---__4_•• -, I , - • t- F c_: «a, SITE —- -5 t ,�//� a �' _ • I p- ,, ; • _ WHO ,,\ �.. e: ,� • . -- ii ] , , E______:--_____I ____ .F. ,' 1, ...*we=.--) itp : ,:,/ FC— ' I ,'tips +-- �� \ 48\411 1: f • 1 '° WH4 fir— �� '' ~�` I I C17 I .c. �-1 3 ��' .`:" akc —r.\ 'I t \\ ( i /. 1 * ici, l .— , . 1 'ii, ' / V--,- . I N — 1 • \ 1 , , _14 • :,4� i • ;� "(i-4 ''' %IN WH 1 /4 /- •--‘-- ••••,_ 7 Tr '• 6 / _.• „ , I , ,,: ,,, mr I • . . ) Figure 4.1.3 WEST BRANCH HYLEBOS CREEK 1 - SUB-BASIN r z k RECOMMENDED SOLUTIONS •••• Basin Boundary 0°- :"if --- ----- •-•-••• Sub-Basin Boundary ) ,-,.. Sub-Catchment Boundary -----_, _ VH9 Sub-Catchment Number 1.•' • •••• . E'--'-.1..L Streams and Stream Number , - .-..- • .24 31 Project Location and Number i IWO. —up ••••.... •_e_an _•• 'go ! ,e-9 1.3K Supplemental Onsite - ••--- 11 ,. -7'. • 1 • Detention Standard ! -- • •• - -- , ,... : . i f ;___-• I VHF , ..4 ssst 1 Unit/5 Acre Zoning , • • Area of Recommended , • . - • __,- ,...zi Ihir : • Enhanced Stormwater - - - • • -.1 . - - gzr Infiltration - —, _ _ --7 N . . — , t --IL-- • --1 0• WHI2 — - . . / 7 ,._.. ,... ••••••-•-• ______, .-,- 7 '..•• — -4 V H1 1 : • /. • •••••" . ,,,,_____ a • 1'-• ,s --- , / ,' " j : 1 . . • ,-- _ - ., - f.., 40 0,r- • . ,;. . r_. ,./. iit _... . • . 0 ... - . • . . . • .0,.4,:-, 0 ___ .*.".i. --. ___.:: -41::00-7,0 0.*:. ....,.‘--..; _ .. 13-7 _ ,_,J. • --/--_--,•-,:. • cr0,,--_• 4 _ fir,:„._. 0 . , , . _ . • . I _.....r. _____.• -,. • • . . . 0 . ..•• .--4•1' ' .- .- • ; - • P c). • .•• . • • i ' 0 0 ' 0 ., ':.,_, A• V • , • 0 • --• • • F-ec,.:-_!V::!:. • _ ---• .—.P'° I, SITE: V....O. . ik.N.. ,‘ . 00 . 0 • • 00 . ._ • H1-5 - V H 7 . 0 0 •-ifr.:7 . . •Pr'. r / '0 0 •0 :lea I • r ..* 1 ___, •• 4,. - A \ • —-_i — r .• • ! '.••. . . i \ \ — •—. - •___ - __^\ • --ANir & ,• ' Vc. 4ry _ ._ ,_,, -- ., 1.-. ,'0 4.•.it•1r.....v, . .---.( :-.-. 000., t- 0 _ .. ,...2, — _------,.7_=.;" 't 4 IP- ..'741 • '' '‘ , - .,_-1 • V•••• - . i• -0 e4. -- _ -_-___ — , r ' , • • -. '•1.:4. ....4 P..64..4:,,410•.04 ,-; • .....,,,, \/H 4 r AZt"4 .;":'•:..-1 4;Ill i ••••••,.••••v.v.*.• ,—; 11.)1 (` .;:-;)- 4-4 . , •004,2,440.V•••••••••••••••••4:49 4itt 1,1. ,--.c : - srzr••••44•••:•*:•41.--.---.4•••••••••••••:., • V".;•;.V..P.i-e••••••••• •- .i • . \\ , '.1 t,..f- -;•-•:„?.*:::::"../ • \ 1 --- \' • N ,i1 . ,,\ Fily./: • i 'I I• 1. i —7 •lit . • • 1 • •,.:/ 1.-• •••• • !-... )••V H I •ar;v11:-'17 :,.; j '1 /iirall 71 ' 1 -I•••• —i — • . 't1 C I i . .!!1 , i . I .. \ • •' ii ,-, . . • WH-4: Stream Corridor Protection 4 A minimua} buffer of 150_feet should be required from the ordinary high water mark on each side of the stream for tributary 0014 between the West Hylebos Wetland and tributary 0013 and on tributary 0013 downstream of S 359th Street (BW-4) . Maintenance of intact vegetated stream corridors dominated by large 4 conifer trees is necessary in this LSRA to promote stream stability and fish habitat in the lower reaches. Trees adjacent to streams provide shade, 4 nutrients, and holding places for fish during high flows. The preferred types of trees are conifers based on their capacity to achieve large sizes and 1 resist rot after their death. WH-5: Enhanced Stormwater Infiltration Upstream of the West Hylebos Wetland (Figure 4.1 .3) , particularly in the vicinity of tributaries 0014A and 0014B (Panther Lake area) , all development proposals should be required to carefully evaluate infiltration potential in accord with the conditions of recommendation BW-21. Zoning in this area should minimize high-density land use so the infiltration potential is maximized. Site designs should maintain the greatest feasible area of undisturbed, preferably forested, land. Drainage systems of existing struc- tures (e.g. , roof drains) should be retrofitted to maximize infiltration potential . 1V WH-6: Nonpoint Source Water Quality Control Program { A priority nonpoint source water quality control program should be established (BW-17) including the elements of public education and involvement listed in , BW-37. WH-7: Spring Valley and West Hylebos Wetland Biomonitoring A biomonitoring program to supplement regular water quality monitoring should be established to provide continuous assessment of biological effects of water quality conditions entering the West Hylebos and Spring Valley Wetlands. Fish held in streamside aquaria could be subjected to streamwater and monitored regularly by local volunteers to detect any incident of acute toxicity from the stream. WH-8: Floodplain Protection Until the floodplain study recommended in Project 2449 (see below) is completed, a floodplain analysis of tributary 0013 between the King and Pierce County boundary and S 364th Street should be required whenever any development is proposed within 10 vertical feet of the ordinary high water mark, measured at the cross-section of the stream nearest to the proposed development. The floodplain analysis should include the determination of a "zero-rise floodway" as defined by the King County SAO. Development should be required to comply with development standards contained in the SAO. WH-9: Reduced Densities in Spring Valley Densities of no more than 1 unit per 5 acres (BW-1) are recommended for an area bounded approximately by I-5 to the east, SR 99 and 8th Avenue S to the 4 - 11 KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL - TABLE 4.3.64 ROCK PROTECTION AT OUTFALLS Discharge Velocity REQUIRED PROTECTION At Design Flow (fps) Greater Less than Minimum Dimensions than or equal to Type Thickness Width Length Height 0 5 Rip Rap* 1 fL Diameter 8 ft. Crown + 6 ft or 4X Dia. + 1 fL whichever is greater 5 10 Rip Rap** 1 ft Diameter 12 ft Crown + 6 ft or 4X dia. + 1 ft or 3X dia., whichever is whichever is greater greater 10 20 Gabion Outfall 1 ft. (As required) (As required) Crown + 1 ft. 20 N/A Engineered Energy Dissipator Required *- Rip rap shall be in accordance with section 9-13.1 of the WSDOT/APWA Standard Specifications. Rip rap to be reasonably well graded with rock gradation as follows: Passing 8 inch square sieve 100% or Maximum stone size 8" Passing 6 inch square sieve 40-60%.or Medium stone size 6' Passing 2 inch square sieve 0-10% or Minimum stone size 2" ** Rip rap to be reasonably well graded with rock gradation as follows: Maximum stone size 24' (nominal diameter) Median stone size 16' Minimum stone size 4" - Note: Rip rap sizing governed by side slopes on outlet channel, assumed to be A-3:1. - 43.6-3 1/90 i ATTACHMENT A PACIFIC TESTING LABORATORIES EXECUTIVE OFFICES EAST SIDE DIVISION TACOMA DIVISION PENINSULA DIVISION 3257 16th Ave.W.•Seattle.WA 98119 11824 North Creek Parkway V N 101•Bothell.WA 9801 I 2402 Pacific Highway E.•Tacoma.WA 98424 10726 Silverdale Way N.W.4105•Silverdale,WA 98383 (206)282-0666•FAX(206)282-0710 (206)485-4244•451-8436•FAX(206)485-4611 (206)922-9299•FAX(206)922-1512 (206)698.6650•FAX(206)698-6648 October 25, 1993 Certificate No. 9310-4005 Ms. Barbara Simpson CITY OF FEDERAL WAY PARKS DEPARTMENT 33530 1st Way South Federal Way, WA 98003 Subject: Geotechnical Investigation for Denny Cabin Foundation, 411 S 348th Street, Federal Way, Washington Dear Ms. Simpson: This letter will confirm information conveyed to you verbally on the occasion of the writers visit to the above site on Friday, October 22, 1993. Under the writers supervision a test pit was excavated within the footprint of the proposed cabin foundation. The test pit revealed that the site is overlain by approximately three (3) feet of fill. The fill is dominantly a dark gray, damp sandy gravel with trace amounts of silt (essentially "pit- run"). It contains small quantities of fragmented red bricks and pavement (concrete containing aggregate). These brick and concrete fragments are up to 2 inches in size. Under the fill the native ground is a mottled damp silty sand; the fill/native ground interface is a marked by a thin band of organic soil containing some rootlets and plant debris. No water was encountered. In our opinion the fill and native soils observed at the site are suitable foundation materials upon which to set the footings for the cabin and we see no need to remove the fill from the site prior to construction. Care should be taken during footing excavation to make sure that the footings will rest on a firm, undisturbed surface. Any disturbed material in the footing areas must be re-compacted prior to pouring. • CONSTRUCTION INSPECTION • SOILS ANALYSIS • NON-DESTRUCTIVE EXAMINATION • ENVIRONMENTAL DRILLING • CONSULTING ENGINEERS • LITIGATION CONSULTATION • CHEMICAL ANALYSIS • CALIBRATION • STRUCTURAL/MECHANICAL LAB A Washington Corporation furnishing Engineering services by and under the supervision of registered professional engineers. (-PTL CITY OF FEDERAL WAY PARKS DEPARTMENT Certificate No. 9310-4005 October 25, 1993 Page 2 LIMITATIONS This report has been prepared to aid in the evaluation of the site. The opinions presented have been arrived at in accordance with generally accepted engineering principles and practices. We make no warranty, either expressed or implied. The opinions presented are based upon the results of our investigations, and observable conditions at the site. They should not be applied to other, surrounding properties. If conditions are encountered which appear to differ from those described in this report we should be notified immediately so that we may review, and either verify or modify our opinions. This report is provided for the information of the client only. The reproduction of this report, by any method, and its transmittal to a third party, by any means, except in full, without the written permission of Pacific Testing Laboratories, is prohibited. We trust that this letter will remove any doubts about the suitability of the site for the proposed venture, and would like to thank you for having given us this opportunity to be of service. Reviewed by: Frank T. Jarnot, P.E., Chief Engineer Sincerely, ' - T. ,TA,, Alastair Lumsden, Senior Engineer Geotechnical Division .0 25746 fr` U.d1:L L G • AL/ir /1025/g 3 • IEXPIRES: 4/10/ 95' I PACIFIC TESTING LABORATORIES i. vi vvmmulll I T utv; 3- 3-94 ; 2:45PM ; CITY OF FEDERAL WAY-, . i 1 206 6614150;# 9 E 4L 1:7Es9 57oN • • • • 3 EXRIBIT "A" HYLEBOS PARK LEGAL DESCRIPTION West half of the North half of the North half of the • Southeast quarter of the Southwest quarter of Section 20,, Township 21 North, Range 4 East, W.M. , EXCEPT the North 30 feet for County Road, King County, Washington. 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"riAj 7sf,..-,,,,,,,,, .., ...- -.1'0:,---,' ._ 1,, T 207..AV CT 1• ,. • L•J .• 1 nO0C ... I. CO-41--, ,_ ,._ . 1_ UN -. - =. 1 :t- i,-...=,., 1 . . , ._ 7-• , ' : . r._ 1 ,1",i "i, 6 , I ---_ .. •.-.(_ — Vicinity Map - -`' 2•_F•''. -..-1-2',. In.:5 = ---- Wv 1 : r`.. I - : i •• I 9rw 2, :WI f.... ..,.. I ? 1 1 •••-r-t-s 1 le i......-.1b=z---I >., 0 - Figure 2 ._cs vv /v✓� -- �..��.. ... yr STATE OF1WASHINGTON ' ' 667777 STATE OF ' WASHINGTON' 667777 PARK C :RECREATION- PARK & REATION , r150CLEARWATER1LANE 7150' CL WATER LANE ' OLYMPIA WA: 98504- ' OLYMPIA WA 98504 ' 202104-9062-03 202104-9062-03 FEDERAL. WAY 209999 FEDERAL WAY 209999 33530 1ST : WY: S 33530 1ST WY S FEDERAL" WAYWA< 98003 FEDERAL WAY'. WA 98003 202104-9156--00 202104-9156-00 CITY OF FEDERAL WAY ' 349999 CITY OF FEDERAL WAY 349999 33530? 1ST WAYS 33530 1ST WAY S FEDERAL' WAYWA 98003 FEDERAL WAY: WA 98003 202104-9178-04 202104-9178-04 JARSTAD JOHN - S+PATRICIA A 2N9999 JARSTAD JOHN S+PATRICIA A 2N9999 34509 9TH AVE S 0101 34509 9TH AVE S 4101 FEDERAL' WAY WA 98003 FEDERAL WAY WA 98003 276230-0010-06: 276230-0010-06 BROWN RAYMOND :' E+CHERI 'A 949999 ! BROWN RAYMOND E+CHERI A 949999 34722 4TH PL ''S 34722 4TH PL S FEDERAL:WAY. WA 98003 FEDERAL: WAY WA 98003 276230-0020-04 : 276230-0020-04 : FINNESSY JOHN :C _ 059999 FINNESSY... JOHN C 059999 34716 4TH.PL S' 34716 4TH PL` S FEDERAL`: WAY WA 98003 FEDERALWAY WA 98003 276230-0030-02 276230-0030-02 TURNER JIMMY:- C C :WANDA L; 442772 . TURNER JIMMY C C WANDA L 442772 34708 4TH PL S 34708 4TH PL S FEDERAL WAY? WA ., 98003 FEDERAL WAY WA 98003 276230-0140-09 276230-0140-09 SUH EDWARD Y E0580 SUH EDWARD Y E0580 34711 4TH 34711 4TH PL S FEDERAL:-WAY` WA 98003 FEDERAL: WAY . WA 98003 276230-0150-06 276230-0150-06 • RHODES MICHAEL !'S+CONNIE Y 079999 RHODES MICHAEL. S+CONNIE Y 079999 34717 4TH .PLACE SE 34717 4TH PLACE SE FEDERAL; WAY WA 98003 FEDERAL; WAY WA 98003 276230-016004 „ 276230-0160-04 HALE ROY: A C0479 HALE ROY A C0479 34723. 4TH PL S 34723 4TH PL S FEDERAL WAY WA 98003 FEDERAL` WAY WA 98003 926480-0020-01 :: 926480-0020-01 ST FARM MUTUAL' AUTO INS CO 130385 ST FARM MUTUAL AUTO-INS CO 130385 C/O CORPORATE 'TX DEPT-RE C/O CORPORATE TX DEPT-RE ONE STATE FARM PLAZA ONE STATE FARM PLAZA BLOOMINGTON' IL 61710 BLOOMINGTON IL 61710 ( * --74******** *,a* .-.0****,0* i.,,,,,,-------- - I . , ili BATCH, NUMBERS , U - COMME It CUSTOMER NAME . C )FFEDERALWAY 1 , , . mmtvlyttsvev,mcoelpss-st-”slts, 40youons-swetsvJornovmsttton,srnm i 202104-9014-02' , 202104-9014-02 ( PUGET . SOUND POWER & LIGHT S-0480 PUGET SOUND POWER' & LIGHT S-0480 PUGET _ POWER BLDG PUGET POWER BLDG BELLEVUE WA 98004 BELLEVUE WA 98004 202104-9015-01- 202104-9015-01 MARCKX. FRANCIS L C1075 ' MARCKX FRANCIS L C1075 34915 4TH AVE S 34915 4TH AVE S FEDERAL WAY WA 98003 FEDERAL WAY. WA 98003 202104-9020-04 202104-9020-04 GORDON. GARY, E 089999 GORDON- GARY E 089999 349044TH- AVE S 34904 4TH AVE S FEOERAL; WAY:WA 98003 FEDERAL WAY WA 98003 202104-9034-08 202104-9034-08 CITY: OF FEDERAL WAY. 399700 CITY OF FEDERAL WAY 399700 33530 1ST WAY S 33530 1ST WAY S FEDERAL WAY WA 98003 FEDERAL WAY WA 98003 ( 2021049049-01' 202104-9049-01 LA PETITE- ACADEMY INC 3N1766 LA PETITE ACADEMY INC 3N1766 14CORPORATE WOODS 14 CORPORATE WOODS ( 8717 W 110TH . ST 4300 8717 W 110TH ST 0300 OVERLAND PARK - KS 66210 OVERLAND-PARK KS 66210 —,, ,,, mw9iiziWit* on14!i00040$w93,4 —. . , CITY OF FEDERAL WAY DEPARTMENT OF COMMUNITY DEVELOPMENT SERVICES MEMORANDUM DATE: November 22, 1995 TO: Community Development Review Committee (CDRC) Members Greg Fewins, Principal Planner Stephen Clifton, Development Services Manager Dick Mumma, Building Official Mary Cossette, Supervisor of Technical/Support Services, Lakehaven Utility District Greg Brozek, KC Fire District #39 Bill Shiels, Talasaea, 15050 Bear Creek Road NE, Woodinville, WA 98072 FROM: Bill Kingman, Associate Planner"V _ 73 9) PROJECT PLANNER: Bill Kingman PHONE: 661-4110 PLEASE RESPOND BY: December 7, 1995 ********************************************************************** FILE NUMBER: SEP95-0028 PROJECT NAME: Historic Cabins City Park PROJECT ADDRESS: 407 South 348th Street PROJECT DESCRIPTION: New city park PROJECT CONTACT: Barbara Simpson, City of Federal Way, Federal Way, WA 98003, Phone: 661-4048 SEPA: Attached is the SEPA checklist, geotechnical investigation, wetland delineation, site drawings, parking memo, Technical Information Report and Temporary Erosion/Sedimentation Control Plan for your review. The related Process III application will be filed at a late date. SEP9528.M1 «n" MA 1t LAND USE APPLICATION E_CIEMAL uV AY DPARTMEN_„Q .COMMTITy.IITaV .LQ APPLICATION NO. 5EP a c-- 0 Z-g Date (,l/....i/c s Agent g iteig autk S/ SOA) Name of Applicant $t' vritor Swot.) Owner rat'Y 0 P r 4A9'y Address 33S30 iST (- 3 '1 So, Phone 66/- 4' 4/8 PEPE - "L!, ion- et so,3 Signature Owner Name/Address Phone (if different than applicant) yi Property Location . 67 i d, 318 w C7; Kroll 736,rite Zone Rs 3500 Legal Description Project Description A7E'3 CG?Y p#12- --- Parcel Number(s) 2 c.' 4404 fo 7 Type of Permit Required: SEPA Notice Sign Chnrklict Mailed Board Site Plan Review R R * Land Surface Modification R R * Boundary Line Adjustment Binding Site Plan R R R Short Subdivision * * * Subdivision R R R Shoreline R R * Variance R R R Conditional Use R R R Use-Process I R R * Use-Process II R R R Use-Process III R R R Quasi-Judicial Rezone R R R Variance R* R R Comp.Plan/Rezone R R Annexation R R Lot Line Elimination *Pre-Application Meeting. 4—li 4Ny —re* TIM R =Required * = Optional by City, e i Construction Entrance see detai 4 Erosion/sedimentation Control Notes: sediment -Filter Fence {see Detail------ t `••1 Y 1. On -site erosion control measures shall be the responsibility of the contractor. Any problems occurring before the final acceptance by the City of Federal - -- _ - _ - a,► '" - �` - Way shall be corrected by the contractor. t 2W. 4) f a 1 f ' - _ _ 20 T 22 .35 t.. ti!25�. , f • �� ,� � /f % --- - _ + C22 fi53 52' , ..•,.. ___ ---- �" 2. In #hfj e `� 1 f '' - S'8°44 39" E vent erosion or sedimentation occurs to adjacent property or o n � t t sensitive L; ��,, 22e.• 1 _3 on areas, all construction work within the project that will aggravate the situation must :ease and the contractor shall iimmediately commence restoration or . - .• , . .'• , ,' f '., /f � f / j � measures. Restoration mitigation l` t ,tires. activity T� 2 g:� . f / f f ration activi shall continue until such time as mitigation actions are comp eted and approved. a TC 229.45 • , .. t f 't /j TC229.60 TYP 1 t ,_ _•._. •^. �•. •. •r ,�! : t f I 3.. All limits of clearingand areas of vegetation preservation as prescribed on the 1 _ ..� f # *� s 2z9.10 c,-to E}a,.=228.90 -%` plan(s) t ~IE so.=zz4.35 A s ! 1� shall be clearly flagged by the contractor in the field and • p observed during construction. TC229.70 I � •- -' `• bse 0 229,20 / 4. All rewired sedimentation/erosion control facilities must be in a erat' 229.89 , , 1)0 ,.� p ion prior to land ` clearing and/or other construction to insure that sediment laden water does not enter ' Y4 f I stem, All erosion and sediment facilities shall be maintained Tc 230. l / i f l 1 / the natural drainage system. s TC230.5 •� C229.88 s stained in a 230.05 2294 z293a 1 / 1 ! ill St1C that clearing and /or S# S. +� - • j g construction is completed 1 : satisfactory condition until h time ha -, r. t fact p and --•�"� � I l 1 I 1 � ails o ea `n «- 1 / / j f potential for erosion has passed. The implementation, -' - _ 229.66 z .93 l i l i , maintenance, replacement and I won � _ - -- 9.94 ;} _ }Y, f f � }: t4= 7 f Rr� . / . � � � � i � t i 1 � J 1 � j �� additions to erosionisedimentation control systems shall be the responsibilityof th TC 232.00 TC232.0 2 3 f 1 2c9.94 a a �� 22%65 ` a contractor. / f / 231.50 1 231.50 i. l / j f f The erosion f } _ � / , and sedimentation control systems depicted on this sheet are intended to be cows sins f !i 1 ' .n� minimum requirements to meet anticipated site conditions. As construction ro raise i ). �, �, p g s and P ._f,�. : ; ' ��„ ! t l f 1 as unexpected or seasonal conditions dictate the contractor should anticipate t 1---�----•-� ,,� t.` r . , .• � -:-°' f . `•. �' . ,, ! .p that more :- , = t ero.sic ,i and sedimentation control facilities will be necessary to insure complete r' 1:. �; ,� r i control on the site. Darin the co P siltation IJ / I . / , g arse of construction, it shall be the obligation �- • � ' • � ' e. 1 � r and responsibility of the contractor to address j l 1 f arty new conditions that ; . .. . ; may be created b � > . + . ..•:. .. _-:.. ,. : ( ,� y his > :. ! s and to provide e: �+ , � l� E' additional facilities, • . _ _..- \ .... g s fifties over .., _ 1 -. ;: . . ranch' above minimum requirements, as may .. £.� be r��: Jed tpropertiesy o protect adjacent . . p I cent art}. s ! 1 water uua.i ofdrainage ( .a ,, - • f :..:. 4+ ilia receiving system. r ' �` f tE=223.70 . ' 1 j I 1 l associated with stabilizing disturbed areas shall be in accordance -. j i/, ;.s+ t With the •• i 9.37 ?.':. f ,'I ?Q.24. - . • , - - . ' - ' u#.. Department .. �j t � A ' t J 1 :�_ + � ��. � , , ,' f � 1 `a`': .�=�•t fit^ rtmen# of Ecology stormwater management . ' � g manual for the Puget C04C. sins �2 4} 228.�6 a i �.. f .. / / Souid Basin, l t f 1 e ANNrConstruction Entrance , • f Ce Notes: { � � } Y . t .. • •�' tom• ! :.. �� t4 / .;� � { t � ` � / � � � � / 1. Construction entrance construction materials shall be as shown d on Detail 4-A. The rock pa shall be a minimum of 8" thick, 20' wide and 50' long. CY l r o 222. _ ".. r, 1 f` / % f 2. Additional rock shall be added periodically to �`t I 1 / f P y maintain proper function of the pad. i 3. adequately remove the mud from the vehicle I `1 / if the pad does not ad ately r wheels, the wheels shall 1 .- , i ti _:_ _ _ -r'" r • _ �� - - j ' f he e�I off be fore the vehicle enters a paved 1 street. The washing shall be done on be 1 . __... .:.�'• ' ..._`a -- � -- --• T � J an area ! ! ! - i -, / j j f cove,+.d with crushed rock and wash water shall drain to a sediment Zo.�o 1 t 1 22t.3 �`"` i �` ♦ �1 �P _ - t facility or throng l 219.4 ,.- � i y- .--_.. r-- t _- , �s,- ---r < a Silt ten}.e h t � �{,•...r� � ! � - V 2t7 v f � / .42216 . j IE=21C30MAW 7 . 1 / J, 1 t � / I __,��_-}- I _ j '' J Jl i ••/ 1 t t } J • 'K 0 / 1 l l r! 1 tt �� t I t -' FILTER FABRIC MATERIAL 60" WIDE ROLLS. USE 4 4/ t STAPLES OR WIRE RINGS TO ATTACH FABRIC TO' WIRE 1 f r t l 1 t `. •• 1 t f t t �� t 2 BY 2" BY 14 GA. WIRE FABRIC OR EQUIV. At Q Q � I V 1 CN 0 i t I s_.. - I I ( 1 t' IIImiIIII.,,i - III II -III - I I - / i t t1111111l11�Nilttlil 11i1'1!t 111' t r I.., .,,i I, IIl`III rII---1,11-11E:11-IIlI : Ir�llTlll: IN R' BBOTTOM TRENCHER MATE , 8 44-16" E t! 653,38' A 6' MAX. Nt - •--J- °� ' � - t~J ��• RJ 2" BY 4" WOOD POSTS, STANDARD OR BETTER OR EQUAL t ALTERNATE: STEEL FENCE POSTS. - R _ 25' MIN. {OPTIONAL} B"ETT`ER ORDEQ�ALSALTERNATE: STEEL FENCE POSTS ° 6"- � �I, FILTER FABRIC MATERIAL PROVIDE 3/4" -1.5" WASHED _ GRAVEL BACKFILL IN TRENCH AND 2" BY 2" BY 14 GA. WIRE t° ON BOTH SIDES OF FILTER FABRIC' 0 n•n FABRIC OR EQUIV. �pfy ON THE SURFACE e' THICK MIN. - + 4" - #3" QUARRY SPALLS Typical Filter Fence detail NEWL" GRADED OR DISTI SIDE :;LOPE ConstructionDetail W s i 0 1 �-- CONCRETE CURB iNHEELCHAIR RAMP 4 c dci ELEVATIONS SHOWN ON CURB 4RE TO THE TOP AND BACK DF THE EXISTING CURB, INPLATTED r-- CONCRETE DRIVE CAC o JUNCTIO 6CO C DRIVE � STREET SIGN X CONCRETE WALK FOR LIGHT STANDARD CONC DRIV Eg �`— LIGHT STANDARD '^ TELEPHONE RISER: - �'''--- TELEPHONE RISER S 86`44'39" E --" STRE T SIGN I; BA SIGN POST WATER METERS STRrE T SIGN PRT C A p 30M-- MAPLE CLUSTERSZ EXISTING CABIN NOTE: # 1 1 IS MISSING /t--27-9— 4. "."'.. LOCATION 10�1 /Y ! / Q;• • f f1/ f bpi `,h l � Q wLd � f MAPLE NOTE: SPRING NOT FOIJND 4 -- 27-- 4 . 42" FIR 41 MAPI_ E CLUSTER FRUIT TREE � <� �<0 RE P PERTY CORNER S 44' 16" E 65,3 3<`9 ` CALC PROP UNPTTED UNPI_ATTED Revision rroporty line. 4 Ynri cr ii I „t tnrnii,nS