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10-104998 ` CITY OF CITY HALL Federal Way 33325 8th Avenue South Mailing Address: PO Box 9718 Federal Way,WA 98063-9718 (253)835-7000 December 6, 2010 www.cityoffederalway.com Slava Stefoglo 30401 25th Ave SW Federal Way, WA 98023 RE: Permit#10-104998-00-SF;Howes 2320 S 304th Street;Storm Drainage and Paving Requirements Dear Mr. Stefoglo: The Public Works Department has reviewed the above permit application. The following items must be addressed before the permit can be approved: 1. Storm drainage must meet the requirements outlined in the 2009 King County Surface Water Design Manual, Appendix C. This means that onsite flow control must be provided for all storm water runoff from roofs and driveways. Flow control options include dispersion, infiltration, rain gardens, and rainwater harvesting, but do not include tightlining runoff to the public drainage ditch as proposed. Please contact me if you would like a copy of Appendix C emailed to you to help in your design of the storm water system. 2. Silt fence is appropriate as an erosion control measure, however the plan shows it on the uphill side of the construction while the downhill side is shown partially exposed. Please reverse this to assure that sediment does not leave the site. In addition, a quarry spall construction entrance is required and must be shown on the plans. 3. A Declaration of Covenant regarding maintenance and inspection of the storm water system must be signed and recorded. This document will be prepared and sent under separate cover. 4. The first 40'of the access easement must be paved. Pavement must be a minimum of sixteen feet wide. Please provide two copies of the revised site plan for further review. If you have any questions, please contact me at 253-835-2732 or at ann.dower@cityoffederalway.com. Sincerely, at/14—DP-4.1te,t—/ Ann Dower Senior Engineering Plans Reviewer AD:su cc: Ken Miller,P.E.,Deputy Public Works Director Scott Sproul,Assistant Building Official Project File(AD) Day File I:\csdc\does\save\32371737098.doc „„, FILE S88'50'19"E 65.00' LOT COVERAGE: I T - 7,540 SF TOTAL SITE AREA 466' =9� B.S.B.L Lot Z 1,702 SF PROPOSED HOUSE 148 SF COV'D FRONT DECK STOCK PILE LOCATION - 12.8 SILT FENCE38 5.00•o 54 SF REAR PATIO I o SILT FENCE 755 SF ASPHALT DRIVEWAY/WALK `� .� - 46 ' 1dt D.S. 4 D.S. H. 2,659 SF TOTAL COVERAGE PORCH �. 18” O. TYP 24.5 % COVERED BY STRUCTURES I CANT'D 462 35.2 % COVERED (IMPREVIOUS) 1 „, ��► ' FIREPLACE I , oI PROP.SED RESIDENCE 50. II �.� F.F. ELEV 462.0 FOOTING 30' ACCCESS = LEGAL DESCRIPTION: EASEMENT o SLA: FV 460.5 DRAIN o� z I S., LOT 2 OF FEDERAL WAY SHORT PLAT -POST 4° DOWNSPOUT #06-1 0242 1-00-SU REC# 20080813900004 SD 30 00' --' SP DAF- W 95 FT OF E 185 FT OF S 255 FT OF I ASPHALT ; '_ y IIGHTLINE DRIVEWAY I SOLID PVC SE 1/4 OF SW 1/4 OF SEC 4-21-4 LESS POR S�.OPE SLOPE D.S. 460' �( QrvV,r��- FOR ST J 6.24 a 5iugt�t ��/►� c1 PARCEL #: 0422104-9265 I -��-'> 1, G� TYPE1 CB �O' ''' J � - 1 4s .I Ilift/ ii"' 0 PROVIDE (1) 50' DISPERSION TREND 4 'STOCK PI LOCATION X c,1 VI/ NOTCH BD. SEE PG C 35, 53 liallialkilliiiiallikiNiill /j� [....,-...,---- --------""' ' 31 (2009 K.C.S.W. - D.M. App.C.) i j AS rDOTEDmm - �_ i 45 WI O- F EDERP,;,NAY S88'50'19'E 65.00' r ; ✓ ORKS'a' 20.00' �RTM,cA�_ La_st. .... -EXIST. DITCH rr rSITE PLANS. 304th ST. NATIVE VEGITATED FLOWPATH SEGMENT 5% SLOPE SCALE: I "=20 '-0" Urban Design Group OWNER: SITE ADDRESS: DRAWN BY AVA > , < 879 Rainier Ave N, Suite A-200 DATE ISSUED g.,t,*° a rzaz Renton, WA 98057 Steve Howes FEDERAL S. WAY,304t St TI- P E A \ FEDERAL WAY, WA URBAN DESIGN GROUP P: (206) 838 8250 REVISED Q I