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HomeMy WebLinkAboutSWP272833 3 BAIMA & HOLMBERG INC. DRAINAGE REPORT FOR MILLER SHORT PLAT Ij 2E � w���S a April 29, 1999 Fr � EXPIRES f r sQ-ov Baima& Holmberg, Inc. Job No. 163 1-001 Prepared for: George & Sylvia Miller 3901 Meadow Avenue N Renton, WA 98056 100 FRONT STREET SOUTH ISSAQUAH • WASHINGTON • 98027-3817 (425) 392-0250 • (425) 391-3055 �f 44•� --LPL L,,lsrlr TSTN 43RD ` SE 80TH 79TH sTPL — 11200 5 o t,t N 4. N 40T 40 jj� SE TN S 1 v1 O SE 85TH PL KING SE 85TH LN N ..38TH. S ; 'PARK Q o SE 86TH ST .. 'a ST SE_86TH SE 87TH N 37` o Q V r y PL ST KENNYDALE NE 36TH `_SE SE 88TH 160C BEACH PARK = ST S� 35TN ST y v, �ti tN a 89- 34rI TH. E 90 Q N 33RD o r, 110 .71 COLEr'�fAt`! NE 31ST ST N .,31ST. POl Ali 2 N" 29TH t. ��. N 28TH PL RIDE: i r NE NE�eT� cf 28TH i E 27TH 2ID ZD i N NE }- F Q : 2CL 67H 25"�pcUj z KENNYDALF z Pi� � N< 24TH ST . �703 NE 23f z ' z5 °z� N NE N 3[rt�t�� y 22ND �2y10c ST: NE 2 2 _ NE' 21ST' STo z d o }� i o m o Z -2 v 2 NE 20TH ST .NE _ H o C] 23t0v 20 M5 17�0 4 1 Pt j z NE 19 H . Aa LOEvc . � CAI , i . • May . , Agp jw 0. was SJ • P7 a ■ °•• •s . ■ '! r t E'.AgD , ■ ' ■ r. go so ■ ■■ , ■ •, AgC •• was / ■ kF Kenny a .. ■ ■,■ ,.• ■■ . • ■■ ■ ■• ■'■ .ham. • .■ r■ • : ' ■_ ' • •■�.� • 1 t• r ,■ • r ■ ■ '' i �� •' r •• l nA '• • —a. •• • ■ . • . . its .F • D N BM 30 Z r . g gC Agl7 10 . 1 ■ iis M4P ■ � ,rt Y t ;� • i"��'x;7 ��,'�� � ' a7���2na��� r s §4`�'+} \\ (1� �1� Hlll�l\ • ■r ds■ � � I� • �� ., PROJECT OVERVIEW This project involves subdividing a 0.85acre parcel into 6 single-family residential lots. The site is located along the west side of Meadow Avenue North in the NW 'Y4 of Section 32 of Township 24 North, Range 5 East. The existing conditions consist of a single-family residence and lawn with underlying Indianola soils. UPSTREAM TRIBUTARY AREA Approximately, 0.50 acres of upstream area drains onto the site. The upstream tributary area is comprised of lawns in single family-residential lots located south of the site. There are no apparent drainage problems associated with these upstream flows. LEVEL 1 DRAINAGE ANALYSIS On-site runoff flows northeast and northwest to a broad grasslined drainage swale flowing from south to north through the site. From the north property line, the swale conveys runoff approximately 350' through residential lawns and discharges into a roadside ditch located along the south side of North 40TH Street where it enters the City of Renton storm system. This ditch flows west approximately 80' entering a 12" diameter inlet pipe. The runoff continues west in a 12" storm line approximately 470' to a catch basin located along the east side of Lake Washington Boulevard. Along this portion of the system, the runoff drains into four catch basins. The runoff continues northeast in a 18" storm line approximately 50' along Lake Washington Boulevard to a catch basin. Then, the runoff is conveyed northwest approximately 65' crossing Lake Washington Boulevard. From the catch basin, the runoff continues northwest in a 24" storm line approximately 80'discharging into Lake Washington. There are no apparent drainage problems along this downstream drainage path. The proposed storm system consists of collecting the on-site runoff into a 36" diameter water quality tank and conveying it into the City of Renton storm system along Meadow Avenue North. This will reduce the offsite runoff to the adjacent properties north of the site. Due to the small size of this project, it should not cause adverse problems downstream. The storm system along Meadow Avenue North is being constructed under City of Renton Job No. SWP-27-2344. The new storm system runs north to North 40T" Street. Then, it runs west to Lake Washington Boulevard discharging into the existing storm system. � I I' I AND W T::::::i / 1 IX gN4F1 DRIVE i1,^,•r;,l - �i I I IZ i FJO 5'WOOD RNL FENCE IX.HOUSE 'r SW33'22'E �r/�% I ''.,.',•, `5• I z.- \ 357.9Y SIDEW DAMP REk" CEDAR HEDGE w t I� IX l 'SVANG S TO BE HOUSE TO .�s 20•�g ) i W t11 LOT 6 LO 4 LOT 3 LOT �2 �//'. LOT 1 Ex HOUSE \ I 20•A /UTILITY Qp /, % ED E ct 21 5 J I = CEDAR HE.Z ------------ ------- rro `+� 9•• /�y N Ewe GI 0-cu } I i \\\ g. •~ '2S•A6CESS/UTjIJM lE:•-:12110 ''IV ae 1 --�+--+F.�'*—� n T •.&` ._ 2D PRIVATE 'M1$ 26'. 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I x� fi►.` 'a / - I 357.9Y ( ,!: i`J' , \ SKEW 'RAUP N I Q EX I � )EXISTING lr I p R9 SWING SET EXISTINGTO oor �^' { ' REELOOCCATED HW�A N) i W W1 • / CEDAR HEDGE I REP \ ` - — � I i Y ig I e ,yLOT 6 s LO 4 LOT 3 LOT /2j LOT 1 �� ► I I ip F T T^' EX HOUSE � \ 1 .:•\ :/ifs / I EX CONC. 21 /UDtEIY / QT' j.!�f/jf,:�:i.!.;,.fi�.•;j f �" I CI °� \ �•�/• \ — �i ` CEDAR H t cn i�- i �r..� ^.• �� ----- --------- - "2S ACCESS/UTRIM LC=i°12�'L10 .:"v+: C•`'> 4'A� g' '@8�Rn,A�dfk'"IB"`�AR S..,Lvk'.ft!F7'• J.�T 20'PROK • NB8.30'O7'W CDp TYPE 1-5f 3M2Y — ._- a I N RI 128, W V-121.1 .,A W/SOW LOCRWG UD ! I VERIFY PI EX Y�IRE FENCE G ^ P -126- 7 STA. 91.J9, YLT DC CONCRETE DRIVEWAY _O/W SEPARATOR 5'TO BE DE OF TED TO I » i ► I INV+121.t THE q7Y OF REN70N --BIV-119.50 STA.0+91.39,-7'LT FOR ROAD PURPOSES I ►..; I END Ex 8'CUVERT R1W122.SO(12-OUT) I ► I I I \ LE.-12&48 It.....! 1.03I ►►''. " II I I I ►► , I I I I » I ► I � II I JOB o/ BAIMA & HOLMBERG, INC. 100 Front Street South SHEET NO. 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REQUEST FOR PROJECT# Prelim.Plat (PP# CAG#a I To: Technical Services Date -V-C4±±q Z a1 WO# C�j Creed•#' C (�3 ZZ From: Plan Review/Project Manager �G2►t _Qj Project Name ° (70 charactus cave) Description of Project: Circle Size of Waterlin 8" 10" 12" Circle One: New or xtension Circle Size of Sewerline: 10" 12" Cucle One: ew or Extension Circle Size of Stormline: 12" 15" 18" 24" (F'� ircle One: New or Extension Addressor Street Names) A v Dvlpr/Contractor/Owner/CnsIt:: f2 (70 charact rs max) Check each discipline involved in Project Ltr Drwg #of sheets per discipline bpd Trans-Storm TJ (Roadway/Draimgc) (Off site improvcmcntsXnclude basin namc) (includc TESC sheets) ❑ Transportation (Signaliza6on,Channclizadon•Lighting) ❑ ❑ 12""' Wastewater -- Sanitary Sewer Main(include basin name) Water (Mains.Valves.Hydrants) (Include composite Horizontal Ctrt Sheets) ❑ Suface. Water ❑ ❑ [mprovements (CLP ONLY)(includc basin name) TS Use Only -T-e l]- q5� k-a ' 3�,- 3 3 __