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SWP271915
v HYDROLOGY REPORT � C% F i� L c �G TACO TIME Maple Valley Highway Office �,y Renton, Washington PREPARED FOR: Accord, Incorporated 1911 Maple Valley Highway Renton, Washington 98055 (206) 226-6656 PREPARED BY PACIFIC ENGINEERING COMPANY 130 ANDOVER PARK EAST, SUITE 300 SEATTLE, WA 98I88 (206) 235-6688 APRIL 27, 1989 REVISED: FEBRUARY 8, 1990 U '14.� •' G/STf f'e • �4 r '••.....•••` '�DAIAL �µG / f GENERAL SITE DESCRIPTION This project is located on the southeast corner of the intersection of South 2nd Street and Rainier Avenue South in Renton, Washington. The site includes the existing Taco Time property and the adjacent south parcel, encompassing 1.42 acres including the Seattle Water Department pipeline right-of-way. The av6rAgV gtZpe is 4 percent and the 0.80 acres of the existing Taco Time are impervious while the remaining 0.62 acres have been cleared and are covered with sparse grass. EXISTING DRAINAGE Runoff on this site flows from west to east with the developed portion draining easterly into the Lake Avenue right-of-way and the undeveloped portion draining into a depression near the southeastern property corner where it percolates into the ground. PROPOSED DRAINAGE PLAN The detention system was sized using King County Public Works Guidelines. The design storm is 10 year with a 10 year release rate using two orifices. All flows were found using the rational method. The on -site storm system has been designed to transmit the runoff through a series of downspouts, tightlines, catchbasins and pipe into the detention system and then into the existing 24" storm system in the Lake Avenue right-of-way. This 24" storm line flows northerly toward South Third Street, then westerly to Rainier Avenue South. APPENDICES 1. Vicinity Map 2. Existing Drainage 3. Proposed Drainage 4. Permanent Storage Design 5. Temporary Sediment Pond Design VICINITY MAP APPENDIX 1 n 5coLE I ZO' I I M 1 pL YAi SOUTH SECOND AVENUE cE. rr •� rep• BL m> OL bmi m. 96.U. u. o7VnLR a571'S ILer �oL e' ox (ttir) bxx I nicrt u.wff( ) Lxwm lruvtA _ _—:.`~ uc,w —------ —= _. I ac nauu '1. —1 1—/-777117 77777 1n. cnn+iooa sxt! I �C M•d.R uu.�uain �f'r.suar. 1J ,,� 0 7,—P,7L'rjJ�U1S� �ZZLIZZTLJ�1 �TT�1 LLu_� __�---r_ J i i �—U11JIIUZiii�1!�1 �1==LJJ11�L' y'1' •' a tri------ \ --_`— —== ---_DL P'". m1s BOX t4\ N7• L1.`55 �� I P n OW W to' W 5M.I5' % iIfy .�• n s CL Me j v 0. bm / OrtnY 13L MT \ M. N Ltd / / tt u .o cra EL TOM l 4 a u• Fm � 1 Z. IL o� 1 tr ala E 0 A V/ n PROJECT NO z � I • p4AwN 1 v�ssuE o LATEST D z m [PACIFIC ENGINEERING COMPANY CONSULTANTS PLAINNINGI t S 1 t i, ZONING: III. SITE AREA: 41,888 SF FILL: 1700 CY t --- SOUTH SEC .KD STREET m• s (rrrC IS Rr7•z9.5(rwu DO U. CULfiL rmnr mfwnC for u• - - - - -- -- rat CM/C THW I= -.:�.- Ur •� ----' � _ YMCOL DATUM LLSCGS DOi1➢1, RDRaIA'RONOM1K _.-- — ..•d ` Cola/•- II ' M• b[.=%R Cr LWIX a rn I== or*Azm TO cc wow LM Pont r=orrI Pwvar RIM•za3 �z6\� 1a.Lo bT T.z ORb[TifJl IGnCDRC.=,[D - -- ---------- ---- WC►LLSrCD OSM1El7 fN••nI S.i Utv • Lr 3 0l - - --- - T GO' cr' L!+ 3jb.:b m ravm . •.z led Z .. .- �� — .� — 48 Lr NT1fC YATM WO rao RGitH flpi I. LEGEND 71 I g7CNU1 amnm ro unrr>, fff — W/CRrCl u'sauDLacx5i,u0 frM.ena zO zD " 1 � i • t0 CONTRACTOR TO CONTACT THE SFATTL[ HATER DEPARTMENT ' O 1 AT r5s-3r•r AT LEAST •S HOURS PRIOR TO STARTING CONSTRUCTION — - {(� I c'o ' N _ Ca'a (TTrC I) C ; Z 04 nm• zo.o uw• zL.oD I >� N uaUTion III Ix - WiTr Qom TO ru=f 1:1 YVCf41eGl W. V 1 RWTAw74 b GCTU07i tab" I. 1 u uorTTt rwnts. rtLO vaurT - D:rnta•n-nac5nva+-Tn---�r� - Ca•6(nrrj)_—t ,ram--� Ln Lo co s•na • . ,. f , a► 1 LLf Z'O9r ' .- ) li • � • .O 1. t bz • ecrr-S•000so J 451r K'tRr f^ t •�n. AD T K 5•0.r776 r i�! "� ' j • I Z o orw•T uTres•sc•� . 1 CA fTR7L ` III Li VcMr N Z , S•OD100 r a. o W-: rRr[nTY ur[ ru+ soc6Lzx CLrtpI!f)1 'RCLOM7C GT LUT STa OOrD� I m r. • L4 o s - J - 1 ' ; v OHO I rCM MOT" ' court/ ITC WodU rm � ilisb•m O - I `-!a =Tnt CO M.M - � CCblr4 SOCNOIK j\ ( � r1X= LOCA110n � tUr•r•zG.B t / / W O rrTSI[D LAMC 6. 8VRCb 1 1 - - �rewOCCrorcror I ziRsws/ L�1_1. ��-, Ca•IzTY►Ci48'f) -�1, i _ li[LaT 1 �- "Q O• rf rue Ece Mw I:= 34 1 6uTTCR rrw Cox ow w= _ C= ROCKCRT '• �—� f£Y yo-Im m ITTrCICa C 7 1LN mmm rn f T'n a CO'N ILU aM�Y W= INTTCR MA CITY Or rmCMrx5 SCC M'L •ANT C•b 5M M 4.5Kr C•a m v x w 01v • tzS A r :l OT my urR 1 cCt rat CITY- �. per• W '•�----�- rb'CGrn MOM TO----- -- IfVr.•L0.7 - F I' v SNCI11C0 MZ LT .. WILri- LOW USE l0' C1T13IoR AM TO r[CT RCf C..v tPA5 WAILGSLC TZJ [• ztCJ �'�IwlFesn '•� i '3 ILJLovi _ �' W co J a W T cr= nK ( Z=M C1L5w,. • � � rG• t--t 2 .0RY W ba b= /--�y C.b CD`t CTYPL I4CA r �' .. O J U Z , rim, zoz—� I O- - ALTERNATE Ads N-g STORM PIPE ( V Q �• H LL. o" VICINITY MAP N1 . f It • " PROJECT NO.: DRAWN BY: 1 !1� e N • !, f m ISSUE DATE: 0 LATEST REV.: a z a m EACIFIC ENGINEERING COMPANY CIVIL ENGINFEERING AND PLANNING CONSULTANTS �ELEAS C STORM DRAIN STORAGE REQUIREMENTS A = z _ Acres Area of Basin Ce Existing co -efficient of imperviousness of Basin ground Cd = 0. P33_ Developed co -efficient of imperviousness of Basin as planned L = 45o LF Length (maximum of overland travel) S = 0,030 Slope (average from Basin high point to low point on watercourse) Vr = FPS Runoff rate Tc = 13.1 MIN Time of concentration from formula: 10 + (L -. Vr (60)) = Tc IYr = �� IN/HR Rainfall intensity from rainfall curve Qe = �.� s CFS Existing outflow from site using equation: Ce i,yrA = Qe QO = CFS/AC Maximum outflow permitted per acre imperviousness from formula: = Cie QO AC:d T = 32•4 MIN Storage time (to capacity) from formula: T-7V�— ' 26. 4 Oo VsCF/AC Required volume of storage per acre in Basin from equation: CIS �s + 7 " Vt = 1059, CF Required volume of storage for this Basin from equation: VT = VSACD 425 LF- (00°0 CMJ- 4 2, S CF (0�CF Storage Required 4 LF 30'(� CMP 3 CF CBr111'3"'1 S,Zc.� � I5.1 GP�u= = i8.% CF ��? q CF Storage Provided C 8 M U o3 S L1w a I5.9 %, = `79. 5 CF 'vzi>L STaaAG t CAPACITY I I aS . 9 C.5 APP F H pi,C 4- rC ACIFIC NGINEERING JOB Tr>croTtAF1izv-M --roOMPANY SHEET NO. OF CIVIL ENGINEERING AND PLANNING CONSULTANTS CALCULATED ev HEAD 0p-IFICrz ,I7-1rA To-fAL _Q '_ 0,95 �,F A�covJ ' 3,47' BoYYor( O�z►Ftc� ! y -I►�A1� _ :S• 2 FT. QncLacIi .= 0.31T, CAS Qp Sew 31�_GI=S.. . ......... .............................. -��r-r-ENW Tr ............. ilI17fJLt;_Q21FIC.I, _ . r.......... ..... 3.-41 F;. QALW,,) = 0.3 ►-� ........... p.31�1 Qdcs)gn' Q ,31.(a CF5 _ - oQ3 .. d=.�',.br.G�ZIFIGE = - !-:.(�.20R'= 2.5U5__A.2'l�.� SF�RP-EDGED NO�.�_.. .. UPPE2 U���F.I_C..t ........... ............. ............. �Iap_� 1.73_.F1 _ QA31-7 G:F� .....; Qr� 0.31� QdejrSn:'_©..Z.rl.� .GGS .. .... ......... __ Ci = OF URIFIL►: _ 34 5NAr.P- F_ o U5� A �G�Q �. 1' 304 Main Avenue South Renton. Washington 98055 cACIFIC IGNGINEERING JOB COMPANY SHEET NO. OF_ CIVIL ENGINEERING AND PLANNING CONSULTANTS CALCULATED By DATE N .... Ex�Srt'1.1'i .I C.OMeNTtoH;, .: DOTAL_in20,I (o._S S.F. L_I,q'? ..A< -3 (OS ..... ... ... ..... Z-t 10s _ e S•r. - e`' - Cc�,_l .. ... .... _. (© _ d 01 y 304 Main Avenue South Renton. Washington 98055 TABLE 1 STORAGE REQUIREMENTS FOR MULTIPLE ORIFICES AREA ype* an Number of Outlets ea Time(Minutes) T - ear Storage -25+ 1762 es� Maximum Volume Vs n torm Storage=PeaKe (Cu.Ft/Ac) = 288220T - 40QoT T - ear s) - -25+ 2i To138 es n ax Volume Vs Storm m� torage (Cu.Ft/Ac) - 34_220T_ - 40QoT Seattle/ One Renton o Seattle/ Two T -25+ 70500 Ko Vs = 282OT-29.9QoT T+25 T = -25+ 85g500 o Vs 3420,FT� 29.9QoT Renton le/ LRenton Three T- -25+ 70500 �o Vs = 282OT-26.4QoT '�+�° T = -25+ 85540 vs 3420T-26.4QoT Seattle/ Four. T = -25+X-100 Vs = 2820T-25.lQoT T - -25+ 85500 Vs - 3420T-25.1QoT Renton T+25— ,.'I�o Seattle/ Five T = -25+ 70500 Vs - 2820T-24.lQoT T = -25+ 85500 Vs = 3420TT-24.1QoT Renton lQo T+25— �o * Orifices with equal head pressure between adjacent orifices. M.Tseng/L.Gibbons/7/19/85 TABLE 1 RUNOFF FACTORS FOR STORM SEWERS FLAT ROLLING 0-5% >5 % UNDEVELOPED LAND Wood $ Forest . . . . . . . . . . 0.05 0.10 Sparse Trees & Ground Cover . . . . . . 0.10 0.15 Light Grass to Bare Ground �. 0.15 0.20 DEVELOPED AREA Paye ment__&_Roof_s_ _90 0.90 Gravel Roads & Parking Lots . . . . . . 0.75 0.80 City Business . . . . . . . . . . . . . 0.85 0.90 Apartment Dwelling Areas . . . . . . . 0.80 0.85 Industrial Areas (Heavy) . . . . . . . 0.70 0.80 Industrial Areas (Light) . . . . . . . 0.60 0.70 Earth Shoulder . . . . . . . . . . . . 0.50 0.50 Playground . . . . . . . . . . . . . . 0.25 0.30 Lawns, Meadows & Pastures . . . . . . . 0.20 0.25 Parks & Cemetery . . . . . . . . . . . 0.15 0.20 SINGLE FAMILY RESIDENTIAL (Dwelling Unit/Gross Acre) 1.0-1.5 DU/GA . . . . . . . . . . . . . . . 0.30 1.5-3.0 DU/GA . . . . . . . . . . . . . . . 0.35 3.0-3.5 DU/GA . . . . . . . . . . . . . . . 0.40 3.5-4.0 DU/GA . . . . . . . . . . . . . . . 0.45i- 4.0-6.0 DU/GA . . . . . . . . . . . . . . . 0.50 6.0-9.0 DU/GA . . . . . . . . . . . . . . . 0.60 9.0-15.0 DU/GA . . . . . . . . . . . . . . . 0.70 18 [/70 1 iR`H►L�►��:. ONE i9mom .. o ;o • . ���r���+.�i1+111N1��t11f1 • • • �� ur1����G11. ? Average Annual Sediment Vol.rt.3/Ac.1/ • w N --- cl;-- C ' Focicr LS Ri ri LA ji M •- 4', I f O N -•� 0 O O O p •y---�- ■■■■■■■■■■o■■ -•-�'.-�ssw_ ■ ■■MAKE■■■■■ W ■■■■�v■■W■■■ems■ �.q�■■ti�■► ■■■ ■su■■a■■■�v�►a■a■■c■ ■ ■■W■■■WnW■■■■■�R�►�\7■ � �■ ■■■■■■■■■■■n■■■■■■■■.■.■■.�■. w ■■ ■■O■■■■■■�■■■A■7►■ ■■■■m■■■■■■■■nu■■nn■�►®e ■■■■■■■■■■n■■■■■■W�■■■■►1\1■ ■■■■■■■■■■■■■oun■■W■ao W ■uRAMME ■ ■■■■■■■■■■■■►� un■n■■■■n u■■>I■nnn►u 7■nl ■ ■■ 1■►\■■ 1■�1■■ ■■�■ ■■■■■■■■■■■■1■WW■W ■n■n■■■■.■■■■■■■■■uo ■■■■■■■■ERIM ■n■■no ■■■■■■■■■W■■■■■O■■IN ■■■■■■■■■■■■■■■■■WONE ■■■■■■■■■■■■■■■■■■■■■IK■ ■■fin■■■■■■W■■■■■■■ ■■■■►�■.v1�■imi ■ W■■■■■■ p■■�rivl1■■■I ■■■■■■■■ua■u■■■■■■�■■ W■■.n�■mI ■■■■■■■■■■W wpm 1 1 1 I 1 1. 1- I 1- 1. 1 1 1 1- : 1 1 1 1 1 1' 1 1 1 1 1 1 1 1 I 0 H hr H 3 z 0 h�H o� M M O 0 �h SOIL EROSION POTENTIAL HYDROLOGIC GROUP K FACTOR Alderwood moderate -severe C .20 Beausite moderate-verysevere B .15 Bellingham slight C .24 Briscot s.li ht C Buckley slight B/C Earlmont slight B/C Ed ewick slight B Everett moderate -severe A .10 Indianola moderate -severe A .24 Kitsap moderate -severe C .37 Klaus slight B .20 Neilton slight -moderate B .15 Newberg slight B Nooksack slight B Norma slight B/C .28 Orcas none D .05 IOridia slight C Ovall Severe C .28 Pilchuck moderate -severe A .10 Puget sli ht B/C .32 Puyallup slight $ .28 Ra nar moderate -severe A 2 Renton slight B/C Salal sli ht B Sammamish none C Seattle none C Shalcar slight C .24 Si sli ht B Snohomish Sultan s1i ht slight D' C .17. .37' Tukwila slight D Woodinville slight C/D 45. � 25 3530 � —40 35 --��� 35 N L 30 25 40 45 20 \ a 0 35� 2—YEAR — 24—HR. PRECIPITATION, PRECIPITATION IN TENTHS OF AN INCH ANNUAL EVERETT 15 20 ' 25 SEATTLE TACOMA 30 � � 35,20 (1 35 i \ 45� 6U ` 25 ' 65 35 25 25 Aorn 45 l 30 20 1% ---\ N ,K r-, I 1 45 \30 to 35 30 J 0 35 G 30 35 505 �5 (..� .25 ,o to t5�l i 45 45 � '0 L. U S15 4.5 �35 YO 33 v l J> C 3-0 _ _S� - S `. 4 5 ;— 35_� t� -� 40 r,45... HYDROLOGY REPORT TACO TIME Maple Valley Highway Office Renton, Washington PREPARED FOR: Accord, Incorporated 1911 Maple Valley Highway Renton, Washington 98055 (206) 226-6656 PREPARED BY PACIFIC ENGINEERING COMPANY 130 ANDOVER PARK EAST, SUITE 300 SEATTLE, WA 98I88 (206) 235-6688 APRIL 27, 1989 REVISED: FEBRUARY 8, 1990 T m n� mo N _ o m C) I GENERAL SITE DESCRIPTION This project is located on the southeast corner of the intersection of South 2nd Street and Rainier Avenue South in Renton, Washington. The site includes the existing Taco Time property and the adjacent south parcel, encompassing 1.42 acres including the Seattle Water Department pipeline right-of-way. The average slope is 4 percent and the 0.80 acres of the existing Taco Time are impervious while the remaining 0.62 acres have been cleared and are covered with sparse grass. EXISTING DRAINAGE Runoff on this site flows from west to east with the developed portion draining easterly into the Lake Avenue right-of-way and the undeveloped portion draining into a depression near the southeastern property corner where it percolates into the ground. PROPOSED DRAINAGE PLAN The detention system was sized using King County Public Works Guidelines. The design storm is 10 year with a 10 year release rate using two orifices. All flows were found using the rational method. The on -site storm system has been designed to transmit the runoff through a series of downspouts, tightlines, catchbasins and pipe into the detention system and then into the existing 24" storm system in the Lake Avenue right-of-way. This 24" storm line flows northerly toward South Third Street, then westerly to Rainier Avenue South. APPENDICES 1. Vicinity Map 2. Existing Drainage 3. Proposed Drainage 4. Permanent Storage Design 5. Temporary Sediment Pond Design VICINITY MAP APPENDIX 1 Rum SOUTH SECOND AVENUE cx_ L ba nn• x v. a Font tra•• te.a. cent; na - �0. 0' CDf (Tr)R 07Y14'TL i I Ci Lt]R •Jtl6iYJC 11 u. ttt7rr(M) - -- -- - - -- -- '1 r"'=-=-o---- --- ------ -1 �, �T,T. �� t'�-� --� -- �-�-ZtT'LT. iS�, T-� i, -, ., � ,.��+ r`-,�-,f- i /T/'1 c rL' _ -_�--=---c- 1L1LL- - 3i��- s •1._�- . _�- t�--- � ..�__ r___-_ u. a ^rn -LLuBw—_ur-tA — — 1-_J�N,�,�Lrusw�•�uZ'�Cur x1J srTr,:..I .Z_T—IIC—l1—Z— l�\ ----- �'�° Lram- s.?ZLLZTr6J1_IC15mu Z0* nT�if77--7 = n`__ `_2Lc— _=r—a�' m—='A �r— nU—. ca_no�bxc T--- BOX tt 00' LL' to U Is a a / tztrxr �— > d `1.11 0. \ tY1• FL.1C / "� 0. :SrPt ccI I / \\ r�'• Lt.e y it / rw• to bt C I N R Tt70 IV'C 1l J EL IV =I ¢ ¢' YrtatY 'R RY t t i r z N" 0 PPDJECT NO • Z DRAWN` I V v t Po v 6fU[ O z x a m ENGINEERING COMPANY CIVIL AN PACIFIC SUL S P LA NNING ON5UlTANTS PLANNING C )NING; 81 SITE AREA: 41,889 CF FILL, 1700 CY ---g—OUTICS—EC-01ND STREET 4: cb, 5 (rym 1) m•Z9. 5 (rau m) zr gq --- — — — — — — — — LL I T -7 -7— ruTL4v Mm T4w 11W N DEL— VMTICQL DOW z "CC.!. Da". rvlTonwKHWA wul 50-0 LOW& 0 'o b It carm or un In 5 MFM Or 151111 TO l%fTJ`1NtD 00 F= w or a mwcra r mm.aq5 zt\ Or. .,e— MK nm un 15 r=m1m m, V L! 35 rmwmu TC FaVO4 at rd 48 L, cc co to CONTRACTOR TO CONTACT THE SEATTLE —TEA DEPARTMENT T I AT 253-2242 AT LEAST 48 HOUAS PRIOR TO STARTING CONSTRUCTION cl) t, t-c cb% Jryrc I) Z rm- %b.0 rw. Z6.00 CQUTIOW!! 5" cxrawm To Famotm ryp btI,75I butmorm bnu= C� Ex Loral krunri. rao ymn �7.,--rwowm TW5 Mvw DFTW----j--*------- mTrm- 6 to- !6v glcnr_ co T-- b.cxod . 0 z. Lr m- (mr it 1 itcre-5,00c3c 1 45LF rcv 1 0 N - �T, comel c 54*- . . N WINK scm am F= WICK !L1Le5cuo z 1 tDLp rcmr LEGEND zi G catz Sir- C� "=ATY LAX rEw Mcw" CLro mmm rx LL$r sTmomtq • fTVe..ZA.O DID wmm mrcm a'ff=`.=TT1 I a ` S% D*Tn, Cm7m rfmwLwaw i- Tm Lu 0 nrVW-D LAOM z CD wmb 01LjWqTLA tC=RT0,j a rEW ACC r2C1-XnT I 511Z W.M P-Ml. EkLMO C) co) LY C) MJA E)Zny� 6 rtw ccr I'm CITY E uj rrw wv- aw f VMCA• 9L 1= M.�. - ZO.7 mm M= rrw car- ow a CX= mocc" L rzmon rx W 5" anz A TO rpa7a uz rA rrErw =AM 4TrLZco X - u I'm I Tyrr x cbm 5- to ie c c It UJI 1111 ch rATC4 rx 9DEkQx i ;.I I mu nwcffx N CK I 5m OTL— m z -1 co -9 C1 in 19Tw rLIK I 05TOCIrl Cm5rc, 5MO -:c �sz L, Say 6*UX nrL c e Z (Tympt I eeo Z Lu 0 -1 z 12m, ZU 0 V W-LjXI) raz LT ALTERNATE- AdS N-12 STORM PIPE cr !k. UAT", LMr - 0 Lu LL 25'. 11% ff CXTUIllon CUM TO MUT AIK CLIV. (COLLARS WAILAW TMU r1re. M.) PROJECT NO.: 0 DRAWN BY: 0 W M ISSUE DATE: a a m LATEST REVA z m (PACIFIC ENGINEERING COMPANY CIVIL ENGINEERING AND PLANNING CONSULTANTS ID* STOQA() G IO` Q 1-ELEASC STORM DRAIN STORAGE REQUIREMENTS A 2- Acres Area of Basin Ce = C), Existing co -efficient of imperviousness of Basin ground Cd = O.P33 Developed co -efficient of imperviousness of Basin as planned L = 4so LF Length (maximum of overland travel) S = D,o 3t1 Slope (average from Basin high•p6int to low point on watercourse) Vr = FPS Runoff rate Tc = 13,1 MIN Time of concentration from formula: 10 + (L :- Vr (60)) = Tc LYr = �4 IN/HR Rainfall intensity from rainfall curve QC = CFS Existing outflow from site using equation: CeI,yrA = Qe Qo = 0.5 CFS/AC Maximum outflow permitted per acre imperviousness from formula: Qo = QC ACd T = 32,� MIN Storage time (to capacity) from formula: Vs = �•�) Cr/AC Required volume of storage per acre in Basin from equation: S 25 +T Vt = IDSq, CF Required volume of storage for this Basin from equation: VT = VSACD 44 Lr- (oo"o cm 1- 4 2. 5 cF (0�Cr Storage Required 4 bF 30ya5 CMP `` 2 8, 1 LF CBMu�"� S.Z[,� � IS•1 GF�iF = �8.� GF 112 ,9 CF Storage Provided CBMu"a SC.F a 15•9%i= 5 GF ivTAL ST6aA4 r- CAPAc.IT� I I �?-8 • q G5 QPPE-MDiX 4 r[� ACIFIC NGINEERING OMPANY CIVIL ENGINEERING ANO PLANNING CONSULTANTS JOB TKO T M F- - RE 0 F3-1- 41 SHEET NO. OF CALCULATED BY DATE HEAD 304 Main Avenue South Renton, Washington 98055 PACIFIC I C�NGINEERING JOB l(COMPANY SHEET NO._ CIVIL ENGINEERING AND PLANNING CONSULTANTS CALCULATED BY ................. _;..... .....:.. ..... ... ..; ..... :. . :. _....... ............... .... . ..... i . _.. .. :. .. :.... .. ...... ..i..... , ... .. ._;... _.... ....... :........... ... .............................; ... .... .. N:Di p • Ex�s�'�r��a..... . ,_ tt5 . .... ..... I OTA L 5. F ... ... ... .... !. IMP V�vc.t /tom \i'...:2 (COS 5.�: .... /O_(pzk) ..........i........... .. ... ....^.. t .. ;...........0 ......;. �2aw �-�.aa .. f . _ , ... ... .... ... ..... ... ...... ..... ............... .............. ......... .:........ 4............................ .... ........ . 1�EdE�op�Q.. ........._......... _. i ,...........:............r ....... -roTAl AQC-i'�.= �v2�?I(0�5 5 I .f1L _._.. .......{...._........ .......:.............. ..... T .. : ... _.. .. _......................... .... ......... .............. :............ .: . .... .._,.......... ..,....... .. .. . ._ ... b J ... ; ..... ... .. 304 Main Avenue South Renton, Washington 98055 TABLE 1 STORAGE REQUIREMENTS FOR MULTIPLE.ORIFICES )-Year Des'' ea tor Time(Minutes) n torm ax�mum torage Volume (Cu.Ft/Ac) - ear ea torage Time(Minutes) es n orca ax mum torage Volume (Cu.Ft/Ac) AREA ype* an Number of Outlets T = -25+ 1762 Vs = 2820TT - 40QoT T - -25+ 221138 Vs 34 � - 4bQoT Seattle/ One Renton w° Seattle/ Two T = -25+ 710500 �o Vs = 282OT-29.9QoT T = -25+ 859500o Vs = 3420T-29.9QoT Renton rRenton Three T - -25+ 70500 Vs = 282OT-26.4QoT 1+2�- T = -25+ 85500 6. o Vs 34+2 T-26.4QoT 0 Seattle/ Four. T - -25+ 70500 Vs = 2820T-25.lQoT T - -25+ 85500 F. Vs - 3420T-25.1QoT Renton •ju0 T+2 5 Seattle/ Five T - -25+ 70500 Vs - 2820T-24.lQoT T -25+ 85500 Vs = 3420TT-24.1QoT Renton N. Dao T+25 * Orifices with equal head pressure between adjacent orifices. M.Tseng/L.Gibbons/7/19/85 TABLE 1 RUNOFF FACTORS FOR STORM SEWERS FLAT ROLLING 0-5 0 >5 % UNDEVELOPED LAND Wood $ Forest . . . . . . . . . . 0.05 0.10 Sparse Trees & Ground Cover . . . . . 0.10 0.15 _Light__Gr.assMto Bare Ground . . . 0.15 0.20 DEVELOPED AREA Pavement . . , _ . 0.90 _&_Roo_fs_ ._ Gravel Roads & Parking Lots . . . . . . 0.75 0.80 City Business . . . . . . . . . . . . . 0.8S 0.90 Apartment Dwelling Areas . . . . . . . 0.80 0.85 Industrial Areas (Heavy) . . . . . . . 0.70 0.80 Industrial Areas (Light) . . . . . . . 0.60 0.70 Earth Shoulder . . . . . . . . . . . . 0.50 0.S0 Playground . . . . . . . . . . . . . 0.2S 0.30 Lawns, Meadows & Pastures . . . . . . . 0.20 0.2S Parks & Cemetery . . . . . . . . . . . 0.15 0.20 SINGLE FAMILY RESIDENTIAL (Dwelling Unit/Gross Acre) 1.0-1.5 DU/GA . . . . . . . . . . . . . . . 0.30 1.5-3.0 DU/GA . . . . . . . . . . . . . . . 0.35 3.0-3.5 DU/GA . . . . . . . . . . . . . . . 0.40 3.5-4.0 DU/GA . . . . . . . . . . . . . . . 0.454- 4.0-6.0 DU/GA . . . . . . . . . . . . . . . 0.50 6.0-9.0 DU/GA . . . . . . . . . . . . . . . 0.60 9.0-15.0 DU/GA . . . . . . . . . . . . . . . 0.70 18 c/7o • • ' BONE GREEN FAA nomoll Ism' so 1110011 FAONE MEN M . . • • • • ; • • • IffliWWORM'.M a Epfilm i •'�' MM �ih��,f��;■ ��,II,h!u�f�NNi ..Uif lon • No V� Fedor tS rn I \ I I O ti �— = •a is o Tt � : �'_ :i,; �.' Y�• - _ � �1� I I,I ?1'1S•,, I l'�--�t� \~'f� ,���1 Average Annual Sediment Vol.Ft.3/AC.1/ o O to 0 0 0 0 • O O 0 o g l o �oiSZ I zooAn LIN 7 � O N\ N C) h hr r z 0 H O K MM 0 �o H 0 h n z 01 SOIL EROSION POTENTIAL HYDROLOGIC GROUP K FACTOR Alderwood moderate -severe C .20 Beausite moderate -very severe II .15 Bellingham slight C •24 Briscot sli ht C Buckle slight B/C E•'arlmont slight B/C Ed ewick sli ht B Everett moderate -severe A .10 Indianola moderate -severe A .24 Kitsap moderate -severe C .37 Klaus slight B .20 Neilton slight -moderate B .15 Newberg slight B Nooksack slight B Norma slight B/C •28 Orcas none D .05 Oridia slight C �Ovall Severe C .28 �Pilchuck Puget moderate -severe slight A B/C .10 .32 Puyallup slight $ •28 Ra nar moderate -severe A •32 Renton slight B/C Salal sli ht B Sammamish none C Seattle none C Shalcar slight C .24 Si slight B .Snohomish slight D .17. Sultan slight C .37� Tukwila slight D Woodinville slight C/D 45. -40 35 3 5 30 25 40 45 20 -\ 40 35 2—YEAR — 24—HR. PRECIPITATION PRECIPITATION IN TENTHS OF INCH ANNUAL EVERETT r D 5 20 ' 25 SEATTLE \vf 20 20 19 0 30 EU �� `\��` ` `� 25 5 5 � 35 2 30 25 20 35 60 TACOM A 45 30 1 40 35 45 v 4� j35 "IN� � 45 C \4 45� �5 45 35 G 40 35 25 f `C35 35� 0 30 30 J5 C �5�'' 35 25 45 45 45 30 35 � — 50 0 Lj 45 1 '35 �0 30C—�. 30 ? -bo v� -� * 4 V C-30 _ -S �1�t 45S--,f"_35 � AN 35-� �4 0 40 G` CITY CF RR°EPITON t'EC IV JUL 2 J 1988 BUILD1N'G/-r0%'!%TG DEPT. HYDROLOGY REPORT TACO TIME 2nd Avenue Office Renton, Washington PREPARED FOR: STORM WATp UTILITY REC VED MAY/1 8 t988 ri-'i 07 2;NTO Accord, Incorporated 1911 Maple Valley Highway Renton, Washington 98055 UU MN 1 710 (206) 226-6656 PREPARED BY PACIFIC ENGINEERING COMPANY 304 MAIN AVENUE SOUTH, SUITE 300 RENTON, WA 98055 (206) 235-6688 MAY 9, 1988 STORM WATER UTILITY RECEIVED AUG 2 10 • 1 �e S _ • •'�� AL • MAY �Z� GENERAL SITE DESCRIPTION This project is located just east of the existing Taco time on Rainier_ Avenue South. The site is bordered by South 2nd Street to the North and Lake Avenue South to the east. The total parcel size is .83 acres, if you include the Seattle pipeline right-of-way. The average slope is 4 percent. Vegetation presently consists of grasses and a few trees with a portion of existing asphalt along the westerly property line. EXISTING DRAINAGE This .site flows to a depression near the southeast property_corner. Runoff apparently percelates into this depression. There is an existing 24" storm line along the easterly property line, however, it appears that runoff does not enter this line. PROPOSED DRAINAGE PLAN The detention system was sized using King County Public Works Guidelines. The design storm is 10 year with a 10 year release rate. A single orifice design will be used. The rational method was used for all calculations. The on -site storm system has been designed to transmit the runoff through a series of downspouts, tightlines, catchbasins and pipe into the detention system. From there, runoff will flow into the existing 24" storm system. CITY Cr 0� "gc,' JUL 2 J 1988 BUILD2RGIZGN1!t.'Ci Dl-:PT. APPENDICES 1. Vicinity Map 2. Existing Drainage 3. Proposed Drainage 4. Graphs and Charts CITY CF REPI 7 0',,l JUL 1266 VICINITY MAP CITY CF 1,5%0 1 � f F, cl, JUL -.� lo 1,68 BUILDING/ZZ?--'-, 07-PT. APPENDIX 1 h 5cou : 1ZO' i a m z v F- J 4.fa EL 5" SOUTH SECOND AVENUE u'rl.r eon 0. I"QN• Le.4• aamin Rtf u W7f 7/ '� u. uv+r(m) _ cx W.LOTM L— _ u ---1 , -- - ��-^ T/ T ice`'%%_ '_—ter----=— —_— L1LLL—-sfss— 1:1.� ��f —_ — _—• cu w' ua XMTLZ j O �_--�! �• M•91.R Uw'ulm h 1N1Y — J-- T'IL1:f7LF—� 7Z:7, 7ZL[l1� TL=l L �J1_1Z1I�ZTIIGIZ' 17Zr�1 _2L-UJ111�� r1 T' Grp eox M-L7.s9 yid 70u1.OL 0. 0. rLrt o------- < v 0L nm F71nn• m e of NM. W5 I( / ." aft j a < / 4 u u soiw IV �nnv ea0. �OL naLWM ; 1 I- m� n� u• pia % � {!� m i X 1 0 CITY CF RENTO R EIVE10D JUL 2 911168 BUlLDWt3--%=Oh!RQ DEPT, O.iOJECT NO Oi14WN' I.ftlE OAT. LI.TEET eEV a z a m � I� CIFIC [ENGINEERING COMPANY pLANNING7CON5U TA TS PACIFIC ENGINEERING .,JMPANY Civil Engineering Consultants 304 Main Avenue South RENTON, WA 98055 . ..................................................... Fzi JOB SHEET NO. -- OF CALCULATEDBY DATE CHECKED BY - DATE _- SCALE-- - - SivRM.DRAIN STORAGE REQUIREMENTS A .8�r Acres Area of. -Basin Ce = ,11C)' Existinq*co=efficient of imperviousness of Basin ground'' C - j� Developed co=efficient of imperViousness of Basin d as planned L - 400 LF Length (maximum of overland travel) S a `%, 'Slooe (average from Basin high'point to low point on.watercourse) Vr .',l FPS Runoff rate L'1 Co Tc = I :MIN Time of,concentration from formula: 6; 10.+ (L Vr .(60)) - .Tc 3 n yr = j ; - INAR ' Rainfall intensity from rainfall 'curve Q = .23 CFS Existinq outflow from site using equation:!"' -? e CeIyr. Qe Qo = ,3j CFS/AC Maximum outflow permitted per acre imperviousness from' formal a:, Qe • T - . `- r ?4IN Storage time .(to capacity) from formula: '2-1.3 R - .-3 J Vs CF/AC Required volume of storage per acre in Basin from . equation: Vt, - I1 5I CF Required volume of storage for. this Basin from equation: VT - VSACO :. I1 CF . Storage.Required CIS' `f,QA_ C%;.ut i i -n-i ew i Lr CF Storage' 'Provided ' f ucc �' �G . L . �l tab �.:�.. .,. .. .� " . 102z PACIFIC ENGINEERING .,JMPANY Civil Engineering Consultants 304 Main Avenue South RENTON, WA 98055 JOB SHEET NO. OF CALCULATED BY DATE CHECKED BY DATE_ SOUTH SECOND ACE\GE 7 L 1"'+ - •-- -L4 iY„1 uL .tJ _ RTlIDV[ QWIrl. rlRRrtnT so EEC ROCHRU w.atbl ccmOO"• L� .: c • i _ WHERE R Lssaw A 'Ct Y•YTL " . . _„r;- � Now---�- � � �' f-j �• � f; �, 1 ' t ------- --�_SL �- —3 ^------ — ------ — —_ --- --_ I--- _�_---------------- t -----.---•----- d .-. w Z.i•_= _- .II —_ -- T-3'._ — tt -------------- —------------------- ---- • -- —T-— ; --_--------------r-------- 1� —/ urL•r.(•t Aa::C. or nV•uba: • / •:rl•L1.75 FV.V TTL UM C110t tD'6(M I51't) UTN+I'd -.. ', � _ 1` n ir0• tiT.' ZO' :1 ;'J3. (s fPY QQ/1L ' N4�L�7} �S' ' y q :z a.7.15rL01J LL • bill 4 _ nV 'Ii rM. ]1 ..�: SHEET INDEX tn^r �i f' _ • Z75c I ditrwol IN, t .] R• L6 IMI ID •2].1r C-r GRADING °UTILITIES PLAN ' 1 \ LV U'•OT MMEIDR �• C-a TEMPORARY EROSION 7. I .J• 1I — --_.. .��\ !•00050, LRR aver , �I701f�l D•1 CRP j(r1I(!i I 0 Z. CONTROL PLAN DDTjApp Tm. !•OD sCL s .OVD I' �I - OVrJiLli •. amICAMm _ �, _ �fXTOI.•1. _ PtI I - C-a OFF -SITE ROAD IMPROVEMENTS f ua + � u TWIL wamm orcm It. C-t DETAILSiSPECIFICATON3 _ Rp10fCRffI,0aWL0T xLr1'OIIriCNR0. \..CD•LINRF]('•)W _ :3 C-s 0 TAIL! Klw pg1ntgyIIRTT .'� { rIfiUM LCi(tIL �.rFm II,R� urm4 � - LIx ran ra rwuurt I _ r v: •ran ° tr CsLr s011 . (m) rma rA l,lti[T]{ -f-• �`_ �'' r61 LVtr•q.71 9 SCL •T, _ . ca rmimm clam am as I .) ) � d sa R►T I"Q:r.0 RRWaft I / - - Rn•rrs0t dss �',t .. WlRltl bou" / I .. ITt•L150' - 0.0 31.0 RW COY OwWOr DR act ocrat•(,sttrc•�F• /�-iu�url�OccOwrc!j�+p� !�y- 1[�� o` J NEW BUILQING R TD Q Itl7r.VCD on' \ •' t'-�—`c-•- Y-i: _-. _ --.FIRST FF.31.00 I LEGEND -- I'MOPIRTY LITT �-- ----M UI]Tlri(. Ca M] D35TM YOTRRY XWER LnL I Mr*at — ------- :. EXISTM ]TORR J&a Lm t CaTCHOA]n -- '--- MUFT, W EA LM t rL1L WiDRWT (-= 1: JJ ]0L xmxt rn0 WLDM nrxw U rcw Wil =A LrL RID MC I co nrW witR Lm PID rrtc wya-pm ----- DMnYA)r TRI7TUY (512C noTLD nMJ) �110— C rlv]ISD t.%Wt Room . _ rEW CrC ap RC rRVEI M VICINITY MAP y i Lait ' ��:t+ sue'' ;Wet6iwrrow nib' :? r.;• w /.:.' �►9 Fw RL omx t, •t-sr--e, =T C-5. LEGAL DESCRIPTION SSINI7 FF-2t.00 A -4m WN15, r[fire 6.j rx COWM&wT II/ITLrL xt bA. %213Im MIM.5 Tc rOSDM1Y DL%5mJic O1y-^ 1'r, \ 'T [YITTRrFat m'. xs7 Iy \� f`5e ZiL I-G'.4'icL L11R C&5(TYn:I) I GdC Rn•L700 na•za]s 1 t•— Lw UDL CRY orRtmOn urt OWLRylr-w-Y)Y b [stun W: UDL OmtuTats xmncnrcucl I Ft•IIT•�-TJlY f - I r � I 1•� r �! � RR•ALSJS tCll NY Qrt'T11Tr ), xt OCTAL• 1, sluT is ezl ; i I WR d'EL 10 OIrELT ( ss sEE scwlcc Te ta,ll. a' ran. x TOm o- f xcrmas \� TYW CarmTL on Y EllaU1TR(rYL art aTaIL • T ..rr c-s. rI jr LL arnl]I't an CTaT TA' X to 00 um t.•t rD.t] I nOTM - �T«•e l f CM Or..M.r1,116 rn Lfft%=T. it, OWMED by ..ra.... .r TI... I.a . A a.. L.t r.ctt•. t tHP tan w ! C, ](ATTIC WRDt DTTMMM rDt]M TW MEN W LL LIAR rw QD ALL COV5 TD m7w g1cm OBmuo ....•.. .r tw. 'C. 'h.tt l.'_ tw'• . TO WA OMWllkawIDR]. •.t.n I,Q'Rtt)wM•t t.M,ettl.. Kv. •t. • � Inl 1't t'� •.• C r mw Final KM n TNC Xmu LOMA CfJsra= wow-�.I...s"'•'•."t' .i~ IRNi-Cr- UP MD TO OC r[LD aWATLD, Tit . c..... ..i,.. »T C=NXTOR fqT 15 m N TUC XOfTLC WATER OLM ar LSD•LLAL Rim TO a))aaRLnA. C...r .+�aa f .t .� .et,•••,M• •.t a tl.. " P .r T St. t... the ..rtt.n t ..f s ,..per• •!. .nweN __. 'ACIFIC NGINEERING COMPANY JUL 2 J 1Q88 BUILDWIG-3/ZON7N O DEPT. PPOJECT NCI LT-OI pFaYWN av DJW tGliUE DATE D-18 Db L.TKsT RE ME CIVIL ENGINEERING ANO PLANNING CONSULTANTS RUNOFF FACTORS FOR STOR14 SEWERS FLAT ROLLING 0-5% >5% UNDEVELOPED LAND_ Wood & Forest 0.05 0.10 Sparse Trees & Ground Cover . . . . . . . 0.10 0.15 Light Grass.to Bare Ground . . . . . . . 0.15 0.20 DEVELOPED AREA Pavement & Roofs . . . . . . . . . . . . 0.90 0.90 Gravel Roads & Parking Lots . . . . . . . 0.75 0.80 City Business . . . . . . . . . . . . . . 0.85 0.90 Apartment Dwelling Areas . . . . . . . . 0.80 0.85 Industrial Areas (Heavy) . . . . . . . . 0.70 0.80 Industrial Areas (Light) . . ... . . . . 0.60 0.70 Earth Shoulder . . . . . . . . . . . . . 0.50 0.50 Playground . . .. . . . . . . . . . . . 0.25 0.30 Lawns, Meadows & Pastures . . . . . . . . 0.20 0.25 Parks & Cemetery . . . . . . . . . . . . 0.15 0.20 1.0-1.5 1.5-3.0 3.0-3.5 3.5-4.0 4.0-6.0 6.0-9.0 9.0-15.0 SINGLE FAMILY RESIDENTIAL (Dwelling Unit/Gross Acre) DU/GA . . . . . . . . . . . . . . . . . . 0.30 DU/GA . . . . . . . . . . . . . . . . . . . 0.35 DU/GA . . . . . . . . . . . . . . . . . . . 0.40 DU/GA . . . . . . . . . . . . . . . . . . . 0.45 DU/GA . . . . . . . . . . . . . . . . . . ..0.50 DU/GA . . . . . . . . . . . . . . . . . . . 0.60 DU/GA . . . *. . . . . . . . . . . . . . . . 0.70 GRAPHS & CHARTS CITY CF REI J T O! I APPENDIX 4 KING COUNTY 5011 2 .3 .4- .5 1 9 1 1. s in 40 30 20 W 10 U 9 a w 7 a z 6 ~ 5 w o 4 w 13 O U u 2 w E, 3 1 5 �/� �1111■1�111�1���1���1��1■��V�NONE �l►�NEWANIN1N►�■r►�r 111111�MIV/11111 E %1111//1//m 111111I��1/sollillp.illwm 111111111111115M MINIMUM 111 1111105111NFAIVAIIIINIIIII!� I I IFA11.11 __..._....-----.---••Nei...�..._.__..._...._._.._...........�._.._ ■■.....■■■..�■■rr�■■■■..�i■��■...■■.�■.■■•�■■■rAO■■■■■■■��■ENE. MENEM ��AII�IR�y NONNI Vm®VI on 11 i� ��/1l�►11III �I ��������1�1�11 ��1�1� �■��1/5912 !.�'/ll�i'/i"i/��������1�1�� mmm ����10%�I�I IIIIIR � •��1 milliIIi111R oil oil �IN 11111 1111%Ilill�l� �WAMMEI/N NOW111111mi Imimms wmmmm 0§10111111��m 1iii� �VAMEW5001 NO MMEWIN0111111 I���� .� .w ,� 1 2�`�•L 3 4 S 10 20 VELOCITY IN FEET PER SECOND AVERAGE VELOCITIES FOR ESTIMATING TRAVEL TIME FOR OVERLAND FLOW RETENTION/DETENTION BASIN EQUATIONS 10 YEAR DESIGN STORM YEAR DESIGN STO AREA TYPE OF OUTLET j PEAK STORAGE TIME MINUTES) RENTON— (ORIFICE WITH HEAD S EATT LE CONSTANT FLOW T=-25+ W., T=-2541175 Qo T=-25+fflPl-- 5 ORIFICE WITH HEAD o TAOW — —� CONSTANT FLOW T=-25+ 1250 Qo ORIFICE WITH HEAD 2255 NORTH ORIFICE --Fo— i � BEND --_ ...._..._.._ .._. CONSTANT FLOW 1503 T=-25+Qo ORIFICE WITH HEAD T=-25+ a- 076 SN09UAL�iIE . V Qo PASS — — CONSTANT FLOW T=-254 2718 �1 i SKYKOMISH ORIFICE WITH HEAD CONSTANT FLOW T=-25+ 2603 Qo T=-254 1735 �-o MAXIMUM STO AGF PEAK STORAGE VOLUME (FT3�ACJ TIME (MINUTES) vs = 2820 T - 40 QoT vs = 2820 T TT+25 . - 60 QoT vs = 3000 T _ 40 QoT T+25 VS = 3000 T T+25 60 QoT Vs = 3607T _ 40 QoT T+25 Vs - 3601T - 60 QoT T + 2 5 Vs = 6522 T _ 40 QoT T + 2 5 vs = 6522 T T+ - 60 QoT vs = 4164 T _ 40 QoT T+25 vs = 4125 _ 60 QoT T=-25+ 213B Qo 1425 T=-25+ �o 7=-25+l 2194 Qo T=-25+ 1463 Qo T=-25+ 2706 �o T=-25+ 1804 Q- o T=-25+ 5013 Qo ' T34 T=-25+ T=-25+ 3n75 Qo T=-25+TUP1:17 0 MAXI PUM STO A.G VOLUME (FT3�A•C1 vs = 3420 T _ T+25 vs = 40 QoT 3420 T 60 QoT T+25 vs = 3510 T._ 40 90' T+25 �v s = 3510 T T— + 2 5 - 60 QOT vs = 4329 T - 40 QOT T + 2 5 vs = . 4329 T - 60 Q,,T T + 2 5 vs = 8020 T _ 40 QoT T+25 vs _ .8020 T _ T+ 2 5. 60 Q(oT Vs = 4920 T _ 40 Q„T T+25 vs' _ 4920 T _ 60 QoT T+25 CITY Cr' PENT01M DIVE® JUL 2 J 1Q$8 8UE D!i;u/Z0R!N13 DEPT. /000 ow ADO/ 700 1. 0 soo �.000t - Soo .000i 400 . 1 .OM4 .000/ VV coos 4006 .10 JAB H .0008 .0001 /10 O• .00/ /Od O .000J 700 !0 .0004 .Oct .000S • 4.0 84 Cc .Oooc 76 AOJ .0008 N 71 .004 DO/ W .00s 0 /00 60 Q ooc O O 90 S4 .008 .001 a V i d o W- 48 h O1 tq 6.0 \ 004 w 7.0 Li 6o k O 36 O? .00S �l ' SO 3J .D06 .03 — .008 W 1~ — 8.0 - 3044 01 40 Q 44 17 OS 0/0 h 9.0 JO P4 y 06 e .08 020 10.0 Al 11 /0 h 10 /8 .15 .040 Q 20 -oso V kl /S .060 -4 .080 j Q . /1 ./DO /0 9 !0 d 7 B 20.0 CITY �CFFFF Q.I T ON S 6 4 JUL 3 Bltt! DIP?/zoNI Z^ DEPT. J0.0 1 NOMOGRAPH FOR COMPUTING 40.0 REQU/RED SIZE OF CIRCULAR DRAIN •� FLOWING FULL FOR 7 17=0.0/2 OR 17=0024 CHART 2 5or5 ti - HYDROLOGY REPORT TACO TIME 2nd Avenue Office Renton, Washington PREPARED FOR: STORM WA,rER UTILITY RE C FIV MAY 18 1988 O. 2;N �J Accord, Incorporated 1911 Maple Valley Highway -- Renton, Washi.ngton 98055 �1/N�'7�(�R� (206) 226-6656 PREPARED BY PACIFIC ENGINEERING COMPANY 304 MAIN AVENUE SOUTH, SUITE 300 RENTON, WA 98055 (206) 235-6688 MAY 9, 1988 • i •. iTTr �C • • 1.� Ill y- GENERAL SITE DESCRIPTION This project is located just east of the existing Taco time on Rainier Avenue South. The site is bordered by South 2nd Street to the North and Lake Avenue South to the east. The total parcel size is .83 acres, if you include the Seattle pipeline right-of-way. The average slope is 4 percent. Vegetation presently consists of grasses and a few trees with a portion of existing asphalt along the westerly property line. EXISTING DRAINAGE This ..site flows to a depression near the southeast property_corner. Runoff apparently percelates into this depression. There is an existing 24" storm line along the easterly property line, however, it appears that runoff does not enter this line. PROPOSED DRAINAGE PLAN The detention system was sized using King County Public Works Guidelines. The design storm is 10 year with a 10 year release rate. A single orifice design will be used. The rational method was used for all calculations. The on -site storm system has been designed to transmit the runoff through a series of downspouts, tightlines, catchbasins and pipe into the detention system. From there, runoff will flow into the existing 24" storm system. APPENDICES 1. Vicinity Map 2. Existing Drainage 3. Proposed Drainage 4. Graphs and Charts VICINITY MAP APPENDIX 1 n 5MLE : I'- ZO' i a m z v X ti Nm SOUTH SECOND AVENUE ex Lut m • BL % ern o. 5" rw• ce.a, aerna ntT 0. W 07c (rTr) Q. arrmit / u uou u ma(m) I ton EX. WLM .,�-� - .�+-,+r••�- =��/1 7._�7"',V1-------t- ..1�.11L��1.—'�•^CI iS_11.��-.'�..--.--ice--' 1 .. �i =--—. ----- �`=---- ✓ rr a �� n y LLu uoc s r�� l ° 1 Iu wcz — •a'�•-� rL V. wuu71Th NLwT•R-.R1C__ Trn �L��_== -. f I ��11— Z111U'LT.rIrJ�— �L—...'1 iLL.—LJJ11�L .t .1—I � I � � tt 00' LL' LO • U �5.15' i1 •.�• e � CL nm P LA - a ruT nn•rc.x rx• aT.a ui 1 / WN rm. 96.5 i 0m of mm Trc a ul3w x n 1 euat umm am I `ana I / r------� l'YGf SFa 1 ----- t�--%-11'7arttL-----J j `�k / _- �— LL DIA / I / m < X 0 e d—p IF'CT N0 z A on.�wN r v nsrue o.n �• LAT[■T P(V a z m CIVIL ENG IrACIFIC ENGINEERING COMPANY PLANNING IC )NSLI TANTS PACIFIC ENGINEERING t;uMPANY JOB Civil Engineering Consultants SHEET NO. OF_ 304 Main Avenue South REN70N, WA 98055 CALCULATED BY DATE CHECKED BV DATE SCALE SIORM.ORAIN STORAGE REQUIREMENTS A Acres Area of• -Basin Ce = ,���) Existin'' co=efficient of imperviousness of Basin ground' Cd = . r; Dev,el'oped' co -efficient• of imperviousness of Basin as planned L 0C) LF Length (maximum of overland travel) S 1.'Slope. (average from Basin .high' point to low point on•watercourse) Vr = ,� .`l FPS Runoff rate T = I� IMIN Time of.concentration from formula: c 10 + :(L..*. Vr.•(G0)) Tc I yr IN/HR Rainfall intensity from rainfall,•curve Qe = 123 CFS Existinq outflow from site using equation: C_. Q e Iyr. e Qo - , 3 CFS/AC Maximum*outflow permitted per acre imperviousness ...from .formu1 a :. T MIN Storage time (to capacity) from formula: Vs - I!:,� CF/AC Required volume of storage per acre in Basin from equation: 40 Vt . - �) �:; ► CF -Required volume of storage. for. this Basin from equation: • - VT VSACO I I 17; CF . Storage. Required Cj;� �fCta:. C:;�,.;,� CT ��i r' ': (r i 1 L(... 1 )! ( CF Storage' 'Provided 4 3 (� GI 1 U CAI'= PACIFIC ENGINEERING WIVIPANY Civil Engineering Consultants 304 Main Avenue South RENTON, WA 98055 �........ ;... .......... . ........... ............... ... .; .... JOB l TA w SHEET NO OF CALCULATED BY DATE CHECKED BY DATE SCALE L.I._...... i... 1......._. j.......... .... TA..I....� ... .. .... .. ..._. i 3oy7- + c� - - - -- ---- SUCTII SL'CUXD ,U'E]G1: - :_:c • . :. {r.1 ..... R;rz2 uuln. D c •ro+u, rr� a:I c%D. •. -.. - ranrEnT ao ccc umu+�Qo,nl, � ��z' • 1, I� •, :t ) Ftlirmt hroc umt s wa- •I-1—_-----_->~T^_-T- �n.T'.:.srT^_• -,.9 ---_ ---_ .-�_--�,L' ;I z F_ •�----------._----------- _-_------------T------'--_ -- =si=3 -- �_. ---- L- ' ..• ;. �� .h.L-ILL I•`�li =---�-----------------_-_L1---_�_ _��-_-._-,-----_ _ _r --T--- -- - - - ---- ------ °r/ j nY•L.aa� i7 r J .t _ I z ED; r n • 2L75 aL •°u ` r.. .' < Jl,. r o ,L'.L 7RiAM CO'L RM'Cl at'•)uTN b tl W +_. • ' E"' a %: ' I .. t; 80' LZ'i0•:1 x88.15' mncti wnnr aOWN � I li $ r.. ! 1 I I n •" :i >:''Y TA 0 • YT Dt%rLN CL -m - r Coe 1 . _..... _ - Y..'JS� : L'.; EY \ � a T+:" �� t• f n>r � I !' ! lVr^. •LlP[6'CV� t I SHEET INDEX uv - - � I ; J ' r::•zr.•.: vol .. »+•�xw� ' d / l: _�. �: , + ; 11 I ,• i 1 { \ .. x:.! • M1TL6' tMru) ti41 i` 3 r C-t ORADINa E IrtzrTrcE FLAN ' RCrGKK ," ti 2V f050. tX VIDOM1 �• 70VAD'. L7 CRTQt I ol�a' r 0 0,y� / I f' . P.R. t�.?5 rrra Ro -- _� a•o.oxso.cou wor e a•an fat C-E TEN►ORARr [RONON - _�:. i \ taTnrvrl mit {fir]) CONTROL PLAN' I "� _ aFralu .DYMCR MD - � 1�,, _lF��•1• C•rI C-7 OFF -SITE ROAD IN►ROYlNENTE i N - -- TPit •• O SIN C mITPt.iE. - 1t �` j/ :i' Y.t••^ C-e OETA" A S►ECIFKATOMS •\ rICUCIWR.II<YL .•••••••� ••• '.i�_.v C` /._. t_. _'.: ':^';II• - I U• a C-E DETAIL! m natC asm Ra[M I I - • ' •M• rn.JO b'OIr fs - re I[.I CatC IlR2.Kr I z 3 Lrt rOR ncu atrc u, _ rtJ: • ta71- asv a Dlc ` /, i !, st rxTaL• 1 , a ecT c s � rim Q. 6U= _ �-..,_� �"� ram rvr•R.71 � - Y26tTAL, 7, - Io'.o•Trrnc altar. j! � � n :r I - • ! L - - - ---- - \ •I y c, 1 p li- �� �� / , wco+c D,ncva I we ttm F) uYl e' t vavt I : 9 z �-..z-.--r /.\r'' j 1Q a ort— 1 T I � j ( I I c5 �a �- • no-r ! 1 1 1 xss I a IIJJ nn.aa . ' L� j ' - IC11N t 7a[.LIEIC �' I % I - _ D Ct DI.O gR vti 10 armc xW , Ru am DY.'U.'ar nawT1— '� I ! C 3 \o !r f » as awvct t0 trrt, U • S .� e actRWl•1•TD21c-s Ia%;Vcf iMr. � NEWBUILPING� �+/n .y,r 1 cron TO IY lou'r7 ." ON, ---1 _ �. - _ _ - _ _ - _ . FIRST FF• 7 00 t ' I .^_' I • -C'C•iRTfL 1rr,R IUv D'DIr • O5mr. FF•2tOD I t aet al•s, rK DOLXarw�iut'iro V- , ! v a _.1 i' ICU �iC � eC mSct i G ; i i .' .• � -e �/-LL aEc•s m. Ran�+waD a•nns'�L r= F I o yt� - �►e TlrEvan+tDv,xTvt�; 1�r1�\ a MAP ; 2 cru�roa m.a7 r [: i •a o r a VICINITY AP a- M F'`ROQALYnru Yz MIML14 LEGEND -- M C7uwm tort mm Q.'y,M 5gVTFAY SWtA LCTt 1 M-Pat. --T--- =TTl MtA UY4 ME WMP. iT •b ��r� v DJ JCL mwt RD DADCL atA'IM ---♦ rtu =.I XXA Ut a-D ME I tA-. CD �-0 m m m wxA Lri wo Tm 1 cb ntkl w)tn LM wo rRt w MM ----- C10.P=ft 7EJMM (DIZE RDTM nrtm) --.+o— cao23=1 nT %o bunt R00cm Iw me OD RC r24mm •O'•.a' WO W 0••tJ'KID W I D:b'ttt ltTM CdJtOR)) r OAD T. YL —MU L O hit l al't C[It! OLDCIrL CITY OlDrlrt, COY Rrl•r70a tII•r a+ICC a co U:R QIY L' Y M.UM I M•CY50 M.Ztm rEl•rlm Iry • aw LEGAL DESCRIPTION ' � No r'•7�.1at I PPD.,E Cy ND O7•dl I&wa cm or mtrvrm 1 UK at "44-r-wi DPiWN BY rLttt�• DAJ � ..Iw �::•� Cww., .w••e..w, I,.•� r.l l....• e..e..s.e c«....... ...... i» I r Drn arm.rm% m urtmcrm Is ar7T,.:D LK a Pra ko:A ocfm.mm T-J950nu TK Ovi'1 uLt tcwL a« Iry lu msa m KL31w ncr.5 ronn-0 TO T<K OCt,.M Cr41TO.10. t r nx Mr= Fit n TIL =ra Lcrn CC. W=n MAt' 01 • UW MW TO Ot r[LD AUMED• nL aritNXTM ° To mTrn TNc J AMC N7:tR mrRntn ar 155-m4z r1tQK m fmvIlmrIT5. --� ..`ACIFIC ".`__NGINEERING COMPANY K{uE °LTE J•IZ-bb LiTEST oEv CIVIL ENGINEEFING ANO PLANNING CONSULTANTS RUNOFF FACTORS FOR STOP14 SEWERS FLAT ROLLING 0-5% >5% UNDEVELOPED LAND_ Wood & Forest ... 0.05 0.10 Sparse Trees & Ground Cover . . . . . . . 0.10 0.15 Light Grass to Bare Ground . . . . . . . 0.15 0.20 DEVELOPED AREA Pavement & Roofs . . . . . . . . . . . . 0.90 0.90 Gravel Roads & Parking Lots . . . . . . . 0.75 0.80 City Business . . . . . .;0.85A' 0.90 Apartment Dwelling Areas . . . . . . . . 0.80 0.85 Industrial Areas (Heavy) . 0.70 0.80 Industrial Areas (Light) . . ... . . . . 0.60 0.70 Earth Shoulder . . . . . . . . . . . . . 0.50 0.50 Playground . . ... . . . . . . . . . . . 0.25 0.30 Lawns, Meadows & Pastures . . . . . . . . 0.20 0.25 Parks & Cemetery . . . . . . . . . . . . 0.15 0.20 SINGLE FAMILY RESIDENTIAL (Dwelling Unit/Gross Acre) 1.0-1.5 DU/GA . . . . . . . . . . . _ 0.30 1.5-3.0 DU/GA . . . . . . . . . . . . . . . . . . . 0.35 3.0-3.5 DU/GA . . . . . . . . . . . . . . . . . . . 0.40 3.5-4.0 DU/GA . . . . . . . . . . . . . . . . . . . 0.45 4.0-6.0 DU/GA . . . . . . . . . . . . . . . . . . ..0.50 6.0-9.0 DU/GA . . . . . . . . . . . . . . . . . . . 0.60 9.0-15.0 DU/GA . . . . . . . . . . . . . . . . . . 0.70 GRAPHS & CHARTS APPENDIX 4 l oY- S KING COUNTY F4 z W U x W a z H w a O a V) W Ln O U W F+ Q 31 ' Orm WA MOONED 01 Oman 101001101 WIN v��nI1111nI/�/� �1/�Ill�llllrl�� WA��'�ii�Un�u�n111�� ���.6%UIll�dlll .` :' / '►!_,�/w�111111111�� WA milli �r�������rr���r�m�►�n• gill n11/1�� MEMO AREA RENTON— S EAT i LE RETENTION/DETENTION BASIN EQUATIONS _l YEAR DESIGN STORM i 5 TYPE OF OUTLET PEAK STORAGE MAXIMUM STQ%GF TIME (MINUTES) VOLUME (FT3/ACJ ORIFICE WITH HEAD T=-25+ 12 28+0 T 40 QOT CONSTANT FLOW ORIFICE WITH HEAD :M TACO — — ,NOR i H BEND ! S,r09UALM I E PASS Ys 1175 2820 T _ Q T T=-25+ Qo 60 T+25-. o Ys = T=-25+ 1Ro5 3000 T T+25 40 QOT Vs = CONSTANT FLOW T=-25+ 1�50 3000 T _ 60 QOT o T+25 0 ORIFICE WITH HEAD 2255 T.=-25+ �o— CONSTANT FLOW 1503 T=-25+ Q 0 ORIFICE .WITH HEAD T=-254 4076 Qo CONSTANT FLOW T=-254 2718 To — ORIFICE WITH HEAD T=-25+, 2603 Qo Vs = 3607T _ 40 QOT T+25 Vs = 3607T _ 60 QOT T+25 Vs = 6522 T _ 40 QOT T+25 vs = 6522 T T+ - 60 QOT vs = 4164 T _ 40 QOT T+25 SOKOMISH _ Ys _ CONSTANT FLOW T=-254 17�35 4164 T T-+-2 —5 - 60 Q o T 25 YEAR DE I GN STOR PEAK STORAGE MAXI?,UM STO Fir TIME (MINUTES) VOLUME (FT MCJ T=-25+ 2138 Qq 1425 T=-25+ �0 0 T=-25+1 2194 Qo T=-25+ 1463 Qo T=-25+ 2706 1804 T=-25+ p T=-25+ 5013 Ro Ys = 3420 T _ T+25 Ys = 40 QeT 3420 T - 60 Q07 T+25 Ys 3510 T._ 40 Qo T + 2 5 -V s = . 3510 T 7+2 - 60 QOT ' T31 T=-25+ 0 o . T=-25+ 3075 Qo T=-25+fl:097 0 . Vs = 4329 T _ 40 QOT T + 2 5 V. s = . 4329 T _ 60 QOT T + 2 5 Vs = 80.20 T _ 40 00,1 T + 2 5 Vs = .8020 T .T+ - 60 �07 v = 4920 T _ 40 QnT T + 2 5 Ys'= 4920 T _ 50 QoT T+25 s& 300 200 /00 90 60 — 70 — 60 Ci — 50 — 40 — JO V - Q — 20 —4 -2 /10 /OB 9L 10 B4 76 71 6C 60 S4 V - 45 41 s6 Z 10 Q -V iZ - 24 O 2/ � JS J7 /0 6 6 .000/ .0001 • .0m .000/ �:J .CODS ' H.0004 —.Cool O. .00/ O .0005 - .0004 Cot .DOOJ• —.0006 .003 ,CODS 004 — .00/ N 44 _DOS o .00t 14 COB — .00J Oc —.004 O. .oz _ .DOS —.006 O1 =.DO8 Q, .04 — .0/0 O Os _ h .08 =.OZO .Jo —.030 .15 —.040 .20 7-.OSO -.060 —.080 ./00 NOMOORA DH FOR COMPUTING 7.0 10 4.0 — S. D O V `1+ — 6.0 h 7.0 8.0 144 !V 3.0 /0.0 v O- V REQUIRED SIZE OF CIRCULAR DRAIN •� FLOWING FULL FOR ,8 7 17=0.012 OR 17=0,024 CHART 2 5�s 20.0 JO.O 40.0 HYDROLOGY REPORT TACO TIME 2nd Avenue Office Renton, Washington PREPARED FOR: Accord, Incorporated 1911 Maple Valley Highway Renton, Washington 98055 (206) 226-6656 STORM WATER UTILITY RECEIVE® MAY 18 1988 r3- � 0; Qy�N UU e PREPARED BY PACIFIC ENGINEERING COMPANY 304 MAIN AVENUE SOUTH, SUITE 300 RENTON, WA 98055 (206) 235-6688 MAY 9, 1988 GENERAL SITE DESCRIPTION This project is located just east of the existing Taco time on Rainier Avenue South. The site is bordered by South 2nd Street to the North and Lake Avenue South to the east. The total parcel size is .83 acres, if you include the Seattle pipeline right-of-way. The average slope is 4 percent. Vegetation presently consists of grasses and a few trees with a portion of existing asphalt along the westerly property line. EXISTING DRAINAGE This .site flows to a depression near the southeast property_corner. Runoff apparently percelates into this depression. There is an existing 24" storm line along the easterly property line, however, it appears that runoff does not enter this line. PROPOSED DRAINAGE PLAN The detention system was sized using King County Public Works Guidelines. The design storm is 10 year with a 10 year release rate. A single orifice design will be used. The rational method was used for all calculations. The on -site storm system has been designed to transmit the runoff through a series of downspouts, tightlines, catchbasins and pipe into the detention system. From there, runoff will flow into the existing 24" storm system. APPENDICES 1. Vicinity Map 2. Existing Drainage 3. Proposed Drainage 4. Graphs and Charts VICINITY MAP APPENDIX 1 tt. enrol SOUTH SECOND AVENUE M• lL.94 0. '�1 IIi1'• Cb.l:. �T • C[2I (M) 1 a � LOM Ci. Up+T(M) f0. 0 Ia � -'i ao--_ u e•e�sn �' _�—_tsa.>tit�L • _ � i + ---- j—I I — --K ,,�_�-M-eI.R I J`SLL_w21 Tr -Or .Ion. 1 Mac ° I' • 20_ �?ZL�Z?T1�7JT rrj % LL J u--ctt — Sri ----- -L--------'— —---.---l�--------- M1'1 • x9. LS t01 a z _ ` N D5'LL'z0•U 555.15' t �I N0.i7M1GITfI t- / rc"y ry • tilt J i ocx� �0.nz I / 1 ' / rr rLT —.---10_.—--.---'�i— .1t - rnOtt s I i r \4�/ /lei i� L , j 1 cn- z w fS1• ,'.'..3 rlv. ¢.to -u m -tx u• snv+ -a. IL- :,"M 1Y ell L4_~ / M II Z Iv �I X I 7ACIFIC MENGINEERING COMPANY X in Z v D z D m Pc1�ECT NO oa swN r iffUf OeTE LaTEST ew Nc CIVIL ENGINEERING AND PLANNING CONSULTANTS M II Z Iv �I X I 7ACIFIC MENGINEERING COMPANY X in Z v D z D m Pc1�ECT NO oa swN r iffUf OeTE LaTEST ew Nc CIVIL ENGINEERING AND PLANNING CONSULTANTS PACIFIC ENGINEERING COMPANY Civil Engineering Consultants 304 Main Avenue South RENTON, WA 98055 JOB SHEET NO. OF CALCULATED BY DATE CHECKED BY _-- DATE SCALE .. .... ................ e.............i......... ; . ..................�.............e..... ...... .. ........ .. ..:. ... ... _..... ..... ......... i ..........>............. :......... ... �.. .. e... ... f ....�............. . . ... ...: ..... ._ .. .... -. ........... i... :. .. .............. APPENDIX_ 3. SIORM.DRAIN STORAGE REQUIREMENTS A - , � �,'; Acres Area of• -Basin Ce = ,7-C) Existinq°`co=efficient of. imperviousness of Basin ground' C = d Dev.el04 co�efficient' of imperviousness of Basin as planned L - EGG LF Length (maximum of overland travel) s . Jcr 'Slone. (average from Basin .high' point to low point on•watercourse) Vr FPS Runoff rate + 7 - c I ".� !dIN Time of , concentration from formula: 10.+ .(L Vr -(60)) - .Tc , I yr = I ; IN/NR Rainfall intensity from -rainfall .'curve Q e CFS Existinq outflow from site using equation: = CeIyr. Qe ,. Qo - > - CFS/AC'Maximum 'outflow permitted per acre imperviousness .from• .formula :. 7 MIN ..Storage time.(to capacity) from formula: ` J J V s Cs~/AC Required.volume of storage per acre in Basin from equation: 4I0 �.33 )ss Vt. - 11�=1 CF Required volume of storage. for. this Basin from equation: VT - VSACD . . 100eI I = , i CF . Storage . Requi red CF. Storage 'Provjded PACIFIC ENGINEERING WIVIPANY Civil Engineering Consultants 304 Main Avenue South RENTON, WA 98055 JOB 4,I T' I !) SHEET NO. OF - CALCULATED BY DATE CHECKED BY DATE SCALE i • SOUTH SECOND L L 'Mcm rew wafts• WE#% To m 1=116,10 11 'c' mcze M=-Aw w 7-11�-- 3. - — — — — — — — -- - - — — — — — — — — — — — — zi -" Lk rl=.-.- 0or= InY-U SM, col6mml 5d*.);H 52 to 555.1i. —f' up I am DLMKr% I w flkt L-009 5 r: M1y a 01rArLOW EL • ElL SHEET INDEX 54.1 1 rl rwt GRADING & VMTIKS PLAN my spowomnr� 3-1100w.mov CONTROL MAN T :i .,;,. -'. — . &=w(rammir OFP-flit It ROAD "VROVIEWSHVI C, TIM C.4 ot C-1 r4ogitormL 2 a SPICIOCATONS r mc. I- 5C.) W . . . . . . . . . . . . . . . . . D, 'CoMy m m r= M MTFIL TAILS To maim am FM pwmrm! W fVW ZCTM 7 - rL I r Awr. um rcu CAA LORA a rcu mrc NEW BUMPING FIRST rr-3�00 To M nowcau 2% 1 8 SIAT. Fr-2t.00 WCOM MODMI% fttr WaLl A L017rT4 4K J,_ I I I I I' I I I -1- -�� I I,rc or.-yw rinm wc-2. Ott CLD. n;M,-,A =20 omm. rx rffc VA , , b LEGEND FPZMTY LIM tumm, conam OUNT'll, Unrffl W4CA LrZ 4 WKXE M=14 OMM WAR LM 4 CATCHORUI =Tm k9m LIM Irate wmearr —rR367 V = = XWa 9M *ADM 0jWW rvi mm xwA Lrr am Tri I. bd'- cD mw wm uw Lrc gm Tyrt I co rxw Lpiv Lm 4m rate wyD%va DWILTW TkAux (312c rMto Irl Mal "a rMko =c 7--7 M-1 ccc an Acmcmm VICINITY MAP ---------- --------- 7 ------- n TvV9PLR'/ C7wj tL MUM IN ML ZC MTM-L 1 4. C b=T -5- LEGAL DESCRIPTION C M * 96 IMI uC. x wa T I.Art Qt WIT-W*6M hoar t&mm ri I 7 : Z. cc rcu crc Dmt= Uff; = Duciv I . X:f CnI I K; I' bLDC .Lvcumr 7 =4. Molwfut: X.." is UM106 a5 DocL cmm 3c, 'C at - A IV CW.F.Tr. 1rAl6m a== - bm Dc.m I.uu C-5. CO W.% CIMF &r 31 rul"M, i r ww axmwL. r%TI6 OR La=rm m orri6to ov XMIC =v; DC=.Iwr M95M nc =*. ML ow?k aw ary ML Coyl!l M k"t lim MrIMILD To P" 0o6m amnall). - ' MIT TM 0 M nlTrIl T11C XAME WIrtM 7,'1111M� al 255 - U4Z FAGA M M=M'Ill -'ACIFIC z: -NGINEERING COMPANY P.o.+ccl 10 0=AwN By DJ61 LATEST PEV �M- CIVIL ENGINEEPINC7 ' AND PLANNING CONSULTANTS RUNOFF FACTORS FOR STOR14 SEWERS FLAT ROLLING 0-5% >5S UNDEVELOPED LAND_ Wood h Forest ... 0.05 0.10 Sparse Trees & Ground Cover . . . . . . . 0.10 0.15 Light Grass to Bare Ground . . . . . . . 0.15 0.20 DEVELOPED AREA Pavement & Roofs . . . . . . 0.90 0.90 Gravel Roads & Parking Lots . . . . . . . 0.75 0.80 City Business . . . . . . . . . . . . . .:0.851 0.90 Apartment Dwelling Areas . . . . . . . 0.80 0.85 Industrial Areas (Heavy) . . . . . ... . 0.70 0.80 Industrial Areas (Light) . . ... . . . . 0.60 0.70 Earth Shoulder . . . . . . . . . . . . . 0.50 0.50 Playground . . .. . . . . . . . . . . . 0.25 0.30 Lawns, Meadows & Pastures . . . . . . . . 0.20 0.25 Parks & Cemetery . . . . . . . . . . . . 0.15 0.20 SINGLE FAMILY RESIDENTIAL (Dwelling Unit/Gross Acre) 1.0-1.5 DU/GA . . . . . . . . . . . . . . . . . . 0.30 1.5-3.0 DU/GA . . . . . . . . . . . . . . . . . . . 0.35 3.0-3.5 DU/GA . . . . . . . . . . . . . . . . . . . 0.40 3.5-4.0 DU/GA . . . . . . . . . . . . . . . . . . . 0.45 4.0-6.0 DU/GA . . . . . . . . . . . . . . . . . . ..0.50 6.0-9.0 DU/GA . . . . . . . . . . . . . . . . . . . 0.60 9.0-15.0 DU/GA . . . . . . . . . . . . . . . . . . 0.70 GRAPHS & CHARTS APPENDIX 4 KING COUNTY E-+ z w U cd W a Z H W a 0 w V) w L x 0 U W E-� Q 3 N 3 4 S 10 20 VELOCITY IN FEET PER SECOND AVERAGE VELOCITIES FOR ESTIMATING TRAVEL TIME FOR OVERLAND FLOW 4 AREA RENTON- S EATT LF TAC(Y'A NORTH BEND SNNUALM I E PASS t SMOMISH a TYPE OF OUTLET ORIFICE WITH HE) CONSTANT FLOW ORIFICE WITH HE, CONSTANT FLOW ORIFICE WITH HE CONSTANT FLOW ORIFICE WITH HE CONSTANT FLOW ORIFICE WITH HE CONSTANT FLOC RETENTION/DETENTION BASIN EQUATIONS YEAR DESIGN STORM YEAR DE IGN STOR PEAK STORAGE TIME (MINUTES) MAXIMUM STn VOLUME (FT3�AC� AG PEAK STORAGE TIME (MINUTES) MAXIMUM VOLUME STO r.G- (FTI/AC� �D 1762 T=-25+�-- vs 2820 T -�- - 4 0 Qo T T=-25+ 2 Q 8 vs = 3420 T_ 40 QeT o T+ 2 5 vs 2820 T_ 1425vsT=-25+��175 3420 T_ .. Qo T+25-. 60 Q T o T=-25+�— moo- T+25 60 Q T 0 FLI75 T=-25+o v _ s 3000 T T=-25+fE2194 vs = 3510 T. D 40 Qo T 40 Qo1 T 25 o T+25 VS IT=-25+ r1l�50 3000 T T+25 60 QoT fjl:1:6::3— T=-25+Q o 510 T TT+29-- 60 Q o To 2255 3607T vs 4329 T T=-25+ 40Q° +270 T=25 T + 2 5 40T+25 QnT%D T=-25+f1l QQ3 VS = 3607 T - 60 QoT T=-25+ 1�4 vs = 4329 T 60 QOT o + - T 25 4D � �4076 T=-25+ .Y QQ vs = T 651225 - 40 QoT T=-25+ 5013 vs = 8020 7 _ 40 QoT T Qo T+25 6522 T _ 60 3342 T=-25+ s .8020 T Q Y 2718 T=-25+ -�— T+ QoT �o _ T+ S. 60 o T AD fE2603 T=-25+— vs 4T+Z5T - 40 QoT 7=-25+lln75 ys 4920 T _ 40 Qo T + 2 5 ��nT T=-25+1-7-3_5 vs = 41�+Y5 - 60 QoT T=-25+ 2lo50 vs'_ 4920 T 60 o T+25 - Q°7 /000 100 CAS .0001 700 1.0 c00 -000t • 500 .00Lt1 400 V .000f .0001 v coos .0aa6 10 JA' H coos .coot • 110 - O. .00/ 1Od O .0003 zoo 9L ~ .0004 30 Ooz DDOS• 4.0 Bq —.0006 70 71 .00J —.00087. .004 =.001 0 q So ' W .00s I00 60 .004 O 90 C7 N O .4 003 Ll oo i -48 h .01 � � h —6.0 70 - .00J 60 'V \ 41 ' .004 p . Ci oz — - .cos 7.0 SO :� JJ —.006 Nz .01 =_.DAB W 40 -30 -27 .04 os —.010 V F. 9. o V _ h — JO Q Zq .06 — /0. 0 lk .06 — . OZO ` O 2/ do 18 Q20 .15 —.040 • 20 /S .OSO O .060.080 LE ./00 /0 /0 9 Q 7 8 20.0 S 6 4 _ J JO.0 2 NOMOGRAPH FOR COMPUTING r 40.0 REQUIRED SIZE OF CIRCULAR DRAIN FLOWING FULL FOR ,8 7 n = 0.0I2 OR 17= 0.024 1 � CHART 2 5�S �-p HYDROLOGY REPORT �' C1F IFS Tr.M u , 2nd Avenue Office Renton, Washington PREPARED FOR: Accord, Incorporated 1911 Maple Valley Highway Renton, Washington 93055 (206) 226-6656 PREPARED BY PACIFIC ENGINEERING COMPANY 304 MAIN AVENUE SOUTH, SUITE 300 RENTON, WA 98055 (206) 235-660e DECEMBER 4, 1987 �rqr 0 GENERAL SITE DESCRIPTION This project is located just east of the existing Taco Time on Rainier Avenue South. The site is bordered by South 2nd Street to the North. The total parcel size is .57- acres, if you include the Seattle pipeline right-of-way and the Lake Avenue South right-of-way. The average slope is 4 percent. Vegetation presently consists of grasses and a few trees with a portion of existing asphalt along the westerly property line. EXISTING DRAINAGE This site generates very little runoff, .23 CFS, which flows to a depression near the southeast property corner. The runoff apparently percelates into this depression. There is an existing 24 storm line along the easterly property line, however, it appears that runoff does not enter this line. PROPOSED DRAINAGE PLAN The detention system was sized using the entire .57 acres and the King County Public Works Guidelines. The design storm is 10 year with a 10 year release rate. A single orifice design will be used. With such a small site, no temporary pond will be utilized. The rational method was used for all calculations. The on -site storm system has been designed to transmit the runoff through a series of downspouts, tighlines, catchbasins and pipe into the detention system. From there, runoff will flow into the existing 24" storm system. APPENDICES 1. Vicinity Map 2. Existing Drainage 3. Proposed Drainage 4. Graphs and Charts VICINITY MAP: APPENDIX 1 Z XIQN3dd`d I 30VNIVUCI JNIISIX31 • r 7 [V O n n Ful z G) 2 Z G) D Z vn r— P 2 Zm Z Qp nz n Om v V ZD rZ as -{ Z too RAINI$R AYENUE_,_, SOUTII� �P -• P j l I:I fi 05'59J0 kP. e P �I I 11a 33P I 19 ::I � � 1 I. i.i J I I'•' gip p I I•I le -i w Ili � I I�., , id_ ; I I III r � cssc� • a I I III. `, u_ o C.iP I Mp f-a I rn I,I I ' I. I PI • I i Q ! $ TACO TIME. OFFICE BUILDING RF,NroN, wA. • 4 o FOR: ACCORD, INC- L ► r -ttt MAPLE VALLEY INt11MAt N < r NINTON. WA. 11655 FNOIItt M0 Ift-tttt C 304 MAIN AVKNUS bt1UTM. FitNTON. WA bbttbb 1901111 ■71.7111tlU 1 n W, *-joT E XIaN3ddd N 3JdNIVUCI a3SOdOad ii= FE!l=tgs::;:i i( iiT q?�i�i`T Si:Fis•f;t'�sf •_ �.iFsl.'js'F 1 ,Iltt ..t �'jtiL .i 3iF;a ; is _ RAINIER AVENUE SOUTH � nos•st'b'C. tt.so'!. I J 4 I I• r I! D PCj P�F 2IF �m 2z Op n0 In In D v-•,(1/ : cC� i 0 TACO rimi of ► icr BUILDING RF.NTONI WA. CRAh)INC rl O ,y $ F 2 e n FOR: ACCORD. INC. UTILITI FS loll OAF I ruLeT WYNTIAT PLAN MINIM RA. nn1 ►No"91 itui w-uu N ,U.3 MwIN wit Nt/E \btufN wEN1oN WA quabY .i•On. Y'I, /Rbo ICDA I Ic ENGINEERING COMPANY OMPANY CIVIL ENGINEERING AND PLANNING CONSULTANTS JOB SHEET NO. 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SOF4- 304 Main Avenue South Renton. Washington 98055 STORM.DRAIN STORAGE REQUIREMENTS A - , 5 % Acres Area of Basin Ce - ,�1_-7 Existinq co -efficient of imperviousness of Basin ground... Cd = a -` Developed co -efficient of imperviousness of Basin as planned L = 1`70 J LF Length (maximum of overland travel) S = 4- 1 'Slooe (average from Basin high, point to low point on -watercourse) Vr = 2,.� ✓ FPS Runoff, rate Tc = II.13 -MIN Time of, concentration from formula: 10 + (L Yr (60)) = .Tc IrJyr = I.r,; IN/HR Rainfall intensity from rainfall curve Q = e ,'1_3 ✓ CFS Existinq outflow from site using equation: Cel§�A = 4e r. Qo = 1117 CFS/AC M-aximu'woutflow permitted per acre imperviousness from formula:. Qo_0d T V MIN Storage time (to capacity) from formula: - Z5 A7 Vs = 13 4 ✓ CF/AC Required volume of storage per acre in Basin from equation: 349-0 CQz.a� C � 7 ..q- Vt . CF Required volume of storage for. this Basin from equation: VT = VSAC D 04, ✓ CF . Storage. Required ' 4, ('9 ` CF.' .Storage, 'Provided 3O � Gr1P Z— GF %8 (� F r'r�nor p -3o oACIFIC CRNGINEERING COMPANY CIVIL ENGINEERING AND PLANNING CON8ULTANTS JOB -Mco ,r SHEET NO. 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I 304 Main Avenue South Renton, Washington 98055 RUNOFF FACTORS FOR STORM SEWERS FLAT ROLLING 0-5% >5% UNDEVELOPED LAND, - Wood & Forest 0.05 0.10 Sparse Trees & Ground Cover . . . . . . . 0.10 0.15 Light Grass*to Bare Ground . . . . . . . 0.15 0.20 DEVELOPED AREA Pavement & Roofs . . . . . . . . . . . . 0.90 0.90 Gravel Roads & Parking Lots . . . . . . . 0.75 0.80 City Business . . . - - . . . . . . . . [0.851 0.90 Apartment Dwelling Areas . . . . . . . . 0.80 0.85 Industrial Areas (Heavy) . . . . . ... . 0.70 0.80 Industrial Areas (Light) . 0.60 0.70 Earth Shoulder . . . . . . . . . . . . . 0.50 0.50 Playground .. 0.25 0.30 Lawns, Meadows & Pastures 0.20 0.25 Parks & Cemetery . . . . . . . . . . . . 0.15 0.20 ` SINGLE FAMILY RESIDENTIAL (Dwelling Unit/Gross Acre) 1.0-1.5 DU/GA . . . . . . . . . . . . . . . . . . 0.30 1.5-3.0 DU/GA . . . . . . . . . . . . . . . . . . . 0.35 3.0-3.5 DU/GA . . . . . . . . . . . . . . . . . . . 0.40 3.5-4.0 DU/GA . . . . . . . . . . . . . . . . . . . 0.45 4.0-6.0 DU/GA . . . . . . . . . . . . . . . . . . 0.50 6.0-9.0 DU/GA . . . . . . . . . . . . . . . . . . . 0.60 9.0-15.0 DU/GA . . . . . . . . . . . . . . . . . . 0.70 GRAPHS;& CHARTS \. APPENDIX 4 Ior- KING COUNTY 3 4 5 10 VELOCITY IN FEET PER SECOND AVERAGE VELOCITIES FOR ESTIMATING TRAVEL TIME FOR OVERLAND FLOW 15 20 RETENTION/DETENTION BASIN EQUATIONS YEAR DESIGN STORM 2b YEAR DE IGN STOR AREA TYPE OF OUTLET PEAK STORAGE MAXIMUM STORAGF� PEAK STORAGE MAXIMUM STQ%jC, _ TIME (MINUTES) VOLUME (FT3/ACJ TIME (MINUTES) VOLUME (FT3/AC� vs 1762 2820 T - S _ R�KTO� ORIFICE WITH HEAD T=-25+ -�— T+ QO T=-25+ 2� 8 3420 T 40 T o T+25 40 Qe7 S EAT'TLE - -- - vs - v s - CONSTANT FLOW T=-25+� 1Q75 2820 TT _ 60 Q T T=-25+ 1425 3420 T _ 60 Q T o T 25-. o 7o - T+25 0 _. ._._...._ 1875 VS Ys T=-25+ 3000 T T=_25+-1 Z194 3510 T. iORIFICE WITH HEAD Qo T+25 40 QOT Qo T+25 - 40 QoT TAC(W _ - ys �s CONSTANT FLOW 1250 3000 T 1463 f �T=-25+ Qo T+25 60 QoT T=-25+ Qo 3T� T - 60 OOT ORIFICE WITH HEAD 2255 VS Vs = NORTH T=-25+ moo- 3607T _ 40 QoT T=-25+ 2706 4329 T _ 40 Q T i T+25 moo- T+25 0 BEND -- S _ vs CONSTANT FLOW ffll03 3601T 1804 4329 TT=-25+Qo T+25 60 QoT T=-25+ - o- T+25 - 60 QOT 4076 vs - YS = SXNUALMIE ORIFICE .WITH HEAD T=-25+�^ 65{2 T _ 40 QoT T--25+ 5013 80z0 T _ 40 Q T T 25 Qo T+25 0 PASS — — vs _ vs = CONSTANT FLOW T=_25+� 2 8 6522 T _ 60 Q T T=_25 fT31 ' 8020 T_ 6O T T+ o T+ `o vs s `n ORIFICE WITH HEAD T=-25+ 2 003 4164 T 3075 4920 T Qo T+25 '.40..QoT T=-25+ Qo T+25 - 40 ��OT SKY KOMISH _ vs - Ys - CONSTANT FLOW;..: T=-25+- 1735 4164 T -� 205� 4920 T �— T+25- 60 QoT T=-25+ 1 QO - 60 Roi T+25 • dA0 .c00/ 700 ?.0 too �.c00t . 500 AOGL1 400 ..1 .0004 .000/ .VJV coos P006 .10 JAO H .00M ,0001 /10 O. c0/ 700 .0004 '0 001 .0005 • 4.0 84 —.0006 7ADJ 71 .000g N DO4 .00/ 4 .005 S.0 /- 6o 00 q ao6 O O 90 s4 O4 .008 .001 y; QD 70 V OOJ \J 4' 4t .004 Qc \ 70 Ci 60 , .01 _ .003. q SD .006 l J7 .03 ::_ W }. 8.0 _ JO w 40 Z7 OS 0/0 � 9.0 JD q - 24 - .O6 - h ti .08 = .0110 /D.O Z' 1/ do h ?0 /8 .15 030 Q 040 /3 20 .050 O kl 060 V tC _ .080 Q , /2 .100 /0 4 10 9 d 7 6 20.0 S 6 4 3 30.0 NOMOGRAPH FOR COMPUTING - 40.0 REQUIRED SIZE OF CIRCULAR DRAIN •� FL OWING FULL FOR 7 17 =0.012 OR 17 -0,024 J �� CHART 2 SAS F• PLAN REVIEW ROUTING SLIP _ DATE: APPLICANT: ��' (' JOB ADDRESS: NATURE OF WORK: TO: Comments Due Comments Due I I ENGINEERING DIVISION I I FIRE PREVENTION BUREAU I I TRAFFIC ENG. DIVISION I I BUILDING CODE REVIEW I I UTILITIES ENG. DIVISION I I ZONING & PARKING I 5D OT{ (ERS S u rC 10 / 7 -1 I I ENERGY CODE Comments or suggestions regarding this application should be provided in writing. Please provide comments to the Building Division by 5:00 p.m. on above date. REVIEWING DEPARTMENT/DIVISION -: I (� Iu �s, ,L- L�� J /�_ O }Y I I APPROVED I I APPROVED WITH CONDITIONS I NOT APPROVED �) IdIIIA FA _ l_ /- t e Signature of ector or Authorized Representative REVIEWING DEPARTMENT/DIVISION DATE I I APPROVED ( I APPROVED WITH CONDITIONS I ( NOT APPROVED HYDROLOGY REPORT 2nd Avenue Office Renton, Washington PREPARED FOR: w II DEC 201987 Accord, Incorporated ^UE"T^ 1911 Maple Valley Highway Renton, Washington 98055 (206) 226-6656 STORM WATER UTILITY PREPARED BY R E C E I V E DEC N j 1987 PACIFIC ENGINEERING COMPANY 304 MAIN AVENUE SOUTH, SUITE 300 RENTON, WA 98055 (206) 235-6688 DECEMBER 4, 1997 REMS&O rdGC 1`7,10187 K!5qq) GENERAL SITE DESCRIPTION This project is located just east of the existing Taco time on Rainier Avenue South. The site is bordered by South 2nd Street to the North and Lake Avenue South to the east. The total parcel size is .42 acres, if you include the Seattle pipeline right-of-way. The average slope is 4 percent. Vegetation presently consists of grasses and a few trees with a portion of existing asphalt along the westerly property line. EXISTING DRAINAGE This site generates very little runoff, .21 CFS, which flows to a depression near the southeast property corner. The runoff apparently percelates into this depression. There is an existing 24" storm line along the easterly property line, however, it appears that runoff does not enter this line. PROPOSED DRAINAGE PLAN The detention system was sized using the entire .42 acres and the King County Public Works Guidelines. The design storm is 10 year with a 10 year release rate. A single orifice design will be used. With such a small site, no temporary pond will be utilized. The rational method was used -for all calculations. The on -site storm system has been designed to transmit the runoff through a series of downspouts, tightlines, catchbasins and pipe into the detention system. From there, runoff will flow into the existing 24" storm system. /APPENDICES 1. Vicinity Map 2. Existing Drainage 3. Proposed Drainage 4. Graphs and Charts VICINITY MAP APPENDIX 1 Z XION3ddV Un r- D� Zr �m ZZ LI 0 nz 0m 30VNIVU0 JNIISIX3 RAINIER AVENUE SOUTH' I S7 1 h I � x I I I I Ld 501, _. h I P LJ LI') I, to •�I:I i:l � I�P J P jo IL O 11 CAI I� a I I IIt z LI \ I1j G ; i!II � p �IA I lipl; I� � � I' IIy1►y�,' .. Wit, PI I i m c i ! e$C TACO TIME OFFICE BUILDING ReNTON�wn. -.: 0 2 FOR:ACCORD, INC. D P 1111 YAILE VALLEY NIOHWAV m { Z RENION, WA. F/0E0 FHONU 124EI2EE-04EE e o 14 MAIN AVENUE BOUtk PENTON WA BRObb 1¢Ob vnn c� agaF •s.a ca, aeona wm No}IVmH „}npe 3nN7wr N--w ooc 1 l) �,,,p = •. —� --_-'^ i , (�' +•� � ctij)••. 5811191.L(1 - — ---- +lt/ 'rM a'NO1N/Y u v Z> W0 GIlm-t [toll -/NON4 t/trNV d 0 an . ' Q 4F• I '= VM NOlNBK `JNIQ 111111 iIJI;I:IU ill�llOJ�.�1.I a a 5 m w0 Z0 00 Z • Z w2 J Z J 41jT� b 0Q I I n K.-2 4 11 I ,01,Ll I a ..0 a s I� I tl �Eta w� III---Ii a I pp iS NOG Z ,I i III �r �' i I IYif �I I I MYijit•..r..F S' 3�� 'I � ill {• - �� .€fYi�.i.rr'cf :F CL OS'9? 7„0F,21.G01J 11. nos-inN3AV a81N1VK PROPOSED DRAINAGE N wJ l } z a 2 0 Z n. U LL U Q APPENDIX 3 joF4- PACIFIC I [NGINEERING JOBCOMPANY SHEET NO._ CIVIL ENGINEERING AND PLANNING CONSULTANTS CALCULATED BY ................................................:.__.._................._._.._......:.........................:.._..................... ...... ..... .... ...... ...... ...... ..... ...... ..... _.. ......... ....... ....... : ...........i...........€... .. . ..... ....:. .. .. ... .... ... ... .. ... ... .. .... . i i ........;...............:....; ......, ....... .,., ... .. 304 Main Avenue South Renton, Washington 98055 STORM DRAIN STORAGE REQUIREMENI- a A - `AIL Acres Area of Basin Ce = •`a Existinq co -efficient of imperviousness of Basin ground'' Cd - d Developed co -efficient -of imperviousness of Basin as planned L = LF Length (maximum of overland travel) S - 4 °1 Slooe (average from Basin high point to low point on watercourse) Vr = �. FPS Runoff rate Tc = II. �, MIN Time of concentration from formula: 10 + (L Vr (60)) = .Tc I'yr r 0 IN/HR Rainfall intensity from rainfall curve Qe = ,-1 CFS Existing outflow from site using equation: CeIyr.A 3 Qe QO - ,5 c� CFS/AC Maximum•outflow permitted per acre imperviousness from formula:. ��e QO-Ad 7 = 3'-D ,� MIN Storage time (to capacity) from formula: • 21 ' Vs = �)(��I CF/AC Required volume of storage per acre in Basin from equation: 3 20 35.-L) _ 35;� . (O "L 40C.5�) Vt , - 41'7 CF 'Required volume of storage for. this Basin from equation: VT = VSACp 41-7 CF. Storage. Required CF ..storage*, Provided TOT#.L C,F '-3 �_¢ ED CIFIC C�NGINEERING JOB 17PQ OFFIY COMPANY SHEET NO. OF CIVIL ENGINEERING AND PLANNING CONSULTANTS CALCULATED BY DATE . t i 304 Main Avenue South Renton, Washington 98055 RUNOFF FACTORS FOR STOR14 SEWERS FLAT ROLLING 0-5% >5% UNDEVELOPED LAND_ Wood & Forest 0.05 0.10 Sparse Trees & Ground Cover . . . . . . . 0.10 0.15 Light Grass to Bare Ground . . . . . . . 0.15 0.20 DEVELOPED AREA Pavement & Roofs . . . . . . . . . . . . 0.90 0.90 Gravel Roads & Parking Lots . . . . . . . 0.75 0.80 City Business 0.90 Apartment Dwelling Areas . . . . . . . . 0.80 0.85 Industrial Areas (Heavy) . . . . . . . . 0.70 0.80 Industrial Areas (Light) . . ... . . . . 0.60 0.70 Earth Shoulder . . . . . . . . . . . . . 0.50 0.50 Playground . . .. . . . . . . . . . . . 0.25 0.30 Lawns, Meadows & Pastures . . . . . . . . 0.20 0.25 Parks & Cemetery . . . . . . . . . . . . 0.15 0.20 SINGLE FAMILY RESIDENTIAL (Dwelling Unit/Gross Acre) 1.0-1.5 DU/GA . . . . . . . . . . . . . . . . . . 0.30 1.5-3.0 DU/GA . . . . . . . . . . . . . . . . . . . 0.35 3.0-3.5 DU/GA . . . . . . . . . . . . . . . . . . . 0.40 3.5-4.0 DU/GA . . . . . . . . . . . . . . . . . . . 0.45 4.0-6.0 DU/GA . . . . . . . . . . . . . . . . . . ..0.50 6.0-9.0 DU/GA . . . . . . . . . . . . . . . . . . . 0.60 9.0-15.0 DU/GA . . . . . . . . . . . . . . . . . . 0.70 GRAPHS & CHARTS APPENDIX 4 1 rtir- S KING COUNTY ' RETENTION/DETENTION BASIN EQUATIONS AREA RENTON— S EATT LE IU YEAR DESIGN STORM TYPE OF OUTLET BEAK STORAGE MAXIMUM STQ %�jG TIME (MINUTES) VOLUME (FT3/AC� ORIFICE WITH HEAD T=-25+ 1762 2820 T 40 QOT CONSTANT FLOW ORIFICE WITH HEAD TACW �. T=-2541175 Qo T=-25+ 1875 Qo CONSTANT FLOW T__25+ 1250 Qo NORTH ORIFICE WITH HEAD i � BEND CONSTANT FLOW SX09UALMIE PASS ORIFICE WITH HEAD CONSTANT FLOW 2255 T=-25+ V —Q 1503 T=-25+ Qo T=-25+ 4076 Qo 2718 T=-25+ �- ORIFICE WITH HEADIT=-25+ 2 003 Qo SMOMISH CONSTANT FLOW T=-25+)1 1735 _V�— vs = 2820 T T+25-. 60 QOT vs = 3000 T T+25 40 QOT VS = 3000 T T + 2 5 60 QOT 3607T _ 40 QOT T+25 VS = 3607 T T+25 60 QOT vs = 6522 T T+25 - 40 QOT vs = 6T+ 2 T - 60 QOT vs = 4164 T _ 40 QOT T + 2 5 vs = 4164 +25 - 60 QOT 25 YEAR DESIGN STORM PEAK STORAGE MAXIMUM STO -AC, TIME (MINUTES) VOLUME (FTI�AC) T=-25+1_2138 Q° 1425 T=-25+ �o T=-25+ 2194 Qo T=_25+fTnQ 463 o T=-25+ 2706 --� o T-_25+ 1804 a T=-25+ 5013 Qo 3F42" T=-25+ T=- 3n75 Qo T=-25+Tf2l:5:1 0 vs = 3420 T _ T+25 40 QoT vs - 3420 T - 60 QOT T+25 vs = 3510 T._ 40 Qo� T+25 �s = 3510 T T + 2 - 60 QoT Vs = 4329 T _ 40 QOT T + 2 5 vs = . 4329 T _ 60 QOT T + 2 5 vs = 8020 T _ 40 QOT T+25 vs _ .8020 T J+ - 6r1 ^,oT vs = 4920 T _ 40 OnT T + 2 5 Ys' _ 4920 T - 60 Qo T T+25 E /000 !QO aw .000/ VOO r.0 soo .00ct . Soo :ell 400 v .coca .000/ v .coos .0006 S 0 J00 H .oDAd .boot` I20 p. .00/ /Od O .Coos Z00 9c .0004 .COI .o005 • 4.0 64 — .D0o6 78 m .001 .000E N T2 .004 •DO/ O 4l .COS S.0 /Ao 60 O 0,C 90 t7 Sf .0 V 08 .001 60 48 h .01 C h 6.0 70 'V 'r OOJ V . Li 60 ` 004 Q. w 70 .01 COS SO 33 .006 .03 30 --.008 ►. 8.0 -- �•• 40 27 .04 .010 V � -. V � .06 OS h � 9.0 QJO 24 s .08 — . OZO ` /O.O 2/ do i[ Q 20 15 .030 .040 /S 20 .OSO O W .060 V .080 -44 12 . /00 /0 4 /0 9 Q 7 8 20.0 3 6 4 3 . ' JO.O 2 NOMOORAP/1 FOR COMPUTING -- 40.0 REQUIRED SIZE OF CIRCULAR DRAIN •1 FLOWING FULL FOR ,8 7 n=0.0I2 OR 17=0.024 1 �� CHART 2 S�� Z� I DESCRIPTION ADDRESS LLa-,166-1 DATE DATE - CHUCK'S DATE TO DUE DATE TO BUILDING DATE RCVD. DATE TO RECEIVED REVIEW BERGSTROM BUILDINn DEPT. PLAN NO. PEPUMIT BILLING 17 h/ �Af� 13 722 It I i I � I I � f I PLAN REVIEW.' No. Project Name: lz C L Building Permit Number: Date to Utility Billing: Business or Use: Site Address: % / .� f f/� Owner/Billing Address: Tax Lot Number(s) Sauare Footage Assessment PLAN REVIEW ROUTING SLIP APPLICANT: A .) DATE:_ JOB ADDRESS: -701 Lkc- A✓ < NATURE OF WORK: TO: Comments Due Comments Due I I ENGINEERING DIVISION I I FIRE PREVENTION BUREAU I I TRAFFIC ENG. DIVISION I ( BUILDING CODE REVIEW UTILITIES ENG. DIVISION I I ZONING & PARKING I OTHERS �t�f" I I ENERGY CODE Comments or suggestions regarding tills application should be Please provide comments to the Building Division b 5:00 Provided in writing. Y p.m. on above date. REVIEWING DEPARTMENT/DIVISION �`7i��Y% //f �.C�— /% / / '7-1/ / �,i / Signature of APPROVED I I APPROVED WITH CONDITIONS ��- Gvrlrr_rd o•'S n uireCLor or Authorized Representative REVIEWING DEPARTMENT/DIVISION DATE ' I I APPROVED I I APPROVED WITH CONDITIONS I I NOT APPROVED Signature of Director or Authorized Representative DATE 7YiR R A - Ce = Cd L S Vr - Tc - Iyr= S DRAIN STORAGE REQUIREMENTS •'$ 3 �� �h`j `� Z Acres Area of. -Basin 1�c-. r �' J• 1 Existim.co-:efficient of.imperviousness of Basin • ground'' . Dev.el'oped co -efficient' -of imperviousness of Basin as nl ann.ed p0 LF ' Length '(maximum`of overland travel) °76 :f 'Slope.* (average from Basin .high' point to low point on•watercourse) FPS Runoff.' rate 1' :114IN . Tim'e of concentration from formula: 10. IN/NR Rainfall 'intensity from •rainfall _'curve .9 0 CFS Existinq'outflow from site using equation: CcIyrA ._.. qe . • �1. CFS/AC :,Maximum'outfIow permitted per acre imperviousness from* .formula _ qo - .d I 1.1Ih( Storage time .(to capacity) from formula: 6 4 MAC. Required'•volume of storage per acre in Basin from equation: `UGC •-7 �� 1Myn CF . 'Requ.ired volume of .storage. for, this Basin from equation:'. " V.L - VSACD .. CITY CF r F. -17ON � 000 CF. Storage. Required JUL 2 9.10,88 I Oq- I CF . ...Storage'. Provided . : �1JILDIIL'C/�flPh'.�tifa pL-PT. 10:.1 . CF PLAN REVIEW ROUTING SLIP DATE: .5 - / "2' APPLICANT: "T 1 tLt , = JOB ADDRESS: Z Q k' L A cl.S NATURE OF WORK: ./ / [) jLr it _ �,o C TO: Comments Due Comments Due I I ENGINEERING DIVISION I FIRE PREVENTION BUREAU I I TRAFFIC ENG. DIVISION I I BUILDING CODE REVIEW I I UTILITIES ENG. DIVISION I ( ZONING & PARKING �) -91MftS Snf- M S - :1S I I ENERGY CODE Comments or suggestions regarding this application should be provided in writing. Please provide comments to the Building Division by 5:00 p.m. on above date. REVIEWING DEPARTMENT/DIVISION fyzA'� ttyz l� ( I I APPROVED I I APPROVED WITH CONDITIONS Sc C 2�5< < GO r,". V-4- . }S c� r, :LG, 1 _Z, gnature of Director or Authorized Representative REVIEWING OEPARTIENT/DIVISION I I NOT APPROVED DATE I I APPROVED I I APPROVED WITH CONDITIONS I I NOT APPROVED PLAN REVIEW FLOUTING SLIP APPLICANT: JOB ADDRESS_ c� _ NATURE OF WORK: TO: Comments Due Comments Due I_ I ENGINEERING DIVISION I I FIRE PREVENTION BURSA U I TRAFFIC ENG. DIVISION I ( BUILDING CODE REVIEW I I UTILITIES ENG. DIVISION I I ZONING & PARKING I� OTIIERSf��'l ( I ENERGY CODE Comments or suggestions regarding tills application should be Please provide comments to the Building Division b 5:00 Provided in writing. Y p.m. on above date. REVIEWING DEPARTMENT/DIVISION 19//%mil 1A'/ L277,�Y / i 7071 1 i'Tl i I I APPROVED I I APPROVED WITH CONDITIONS a LA.. - -_.... -.. i �^ DATE Signature of UlrecLot or Authorized Representative REVIEWING DEf'/IRTMFNI/DIVISION APPRUVED I I APPROVED WITH CONDITIONS I ( NOT APPROVED PLAN REVIEW ROUTING SLIP DATE:. APPLICANT: 4C.0 n,F__11) ��� c T •�_.e 1(i < C JOB ADDRESS: 7- NATURE OF WORK: TO: Comments Due Comments Due I I ENGINEERING DIVISION I I FIRE PREVENTION BUREAU I I TRAFFIC ENG. DIVISION I I BLILDING CODE REVIEW I UTILITIES ENG. DIVISION I ( ZONING & PARKING Y I -WT E-RS5rOI �r I I ENERGY CODE Comments or suggestions regarding this application should be provided in writing. Please provide comments to the Building Division by 5:OC p.m. on above date. REVIEWING DEPARTMENT/DIVISION � ,/i /i C I%r% /-.1J� /. % /// ,17 i I I APPROVED ( I APPROVED WITH CONDITIC14S I I NOT APPROVED ) �J'd j/ iG/1. '•C/✓ `/� � � �� 7-c'_ j' !�� Ci 1 �c� � . Q.1 oo,e./ Vd /,-P- DATE 7 s Signature of Director or Authorized Representative REVIEWING DEPARTMENT/DIVISION I APPROVED I I APPROVED WITH CONDITIOVS Signature of Director or Authorized Representative I I NOT APPROVED DATE 7 Li APPLICANT: JOB ADDRESS: NATURE OF WORK: TO: PLAN REVIEW ROUTING SLIP F_ — Comments Due DATE :'�Z D Comments Due I I ENGINEERING DIVISION I ( FIRE PREVENTION BUREAU I I TRAFFIC ENG. DIVISION ! ! BUILDING CODE REVIEW I I UTILITIES ENG. DIVISION I I ZONING & PARKING I I „p.THER9-,5W/ I I ENERGY CODE Comments or suggestions regarding this application should be provided in writing. Please provide comments to the Building Division by 5:00 p.m. on above date. <"- I V REVIEWING DEPARTHE NT/DIVISION J / )�� / � LA APPROVED I I I APPROVED ( I APPROVED WITH CONDITIONS I-�t�l NOT APPROVED Signature of Director or Authorized Representative REVIEWING DEPARTMENT/DIVISION I I APPROVED I — TE /-29—ff APPROVED WITH CONDITIONS 1I I NOT APPROVED PLAN REVIEW ROUTING SLIP DATE: I Z- 7-3 APPLILANI: 308 ADDRESS: 5 Z ti _U - O NATURE OF WO: RKComments Due TO: Comments Due _I FIRE PREVENTION BUREAU I _I ENGINEERING DIVISION __._— — I -I BUILDING CODE REVIEW _.---- I -I TRAFFIC ENG. DIVISION �— ZONING bPARKING -------- UTILITIES ENG. DIVISION__ —_ I I ENERGY CODE I OARS S 0 f " regarding this application should be provided in writing. Comments or suggestions m. on above date. Please provide comments to the Building Division by 5:00 p. DIVISION �..�'- REVIEWING DEPARTMENT/_ NOT APPROVED APPROVED APPROVED WITH CONDITIONS —II I _I I I DATEZ Signature of Director or Authorized Representative REVIEWING DEPARTMENT/DIVISION I —I NOT APPROVED APPROVED I I APPROVED WITH CONDITIONS PACIFIC ENGINEERING ( PANY Civil Engineering Consultants 304 Main Avenue South RENTON, WA 98055 TO (, ] T�r o WE ARE SENDING YOU � Attached ❑ Under separate cover via ❑ Shop drawings ❑ Copy of letter *'Sk Prints ❑ Change order [L[E,r,rA ors unmanoruaL DATE JOB NO Z I (;-7 - AT ENTION RE 7 _LCF77 ❑ Plans ❑ Samples ❑E] the following items: CI Specifications COPIES DATE NO. DESCRIPTION 2 4— Q ry , !I ��/\ T i e9 THESE ARE TRANSMITTED as checked below: >r For approval ❑ For your use ❑ As requested ❑ Approved as submitted ❑ Approved as noted ❑ Returned for corrections ❑ For review and comment ❑ ❑ Resubmit copies for approval ❑ Submit copies for distribution ❑ Return corrected prints ❑ FOR BIDS DUE 19 ❑ PRINTS RETURNED AFTER LOAN TO US REMARKS(i(itL, STORM WATER l,-,.._ � yc COPY TO PRODUCT 2403 � Inc, G.W, M. 01471. SIGNED: a Q 'A� If enclosures are not as noted, kindly notify us at once. PLAN REVIEW ROUTING SLIP _ DATE: f �2.11 - APPLICANT: JOB ADDRESS: NATURE OF WORK: ('—C-, l- �j G TO: Comments Due Comments Due I I ENGINEERING DIVISION I I FIRE PREVENTION BUREAU I I TRAFFIC ENG. DIVISION I I BUILDING CODE REVIEW I I UTILITIES ENG. DIVISION I I ZONING & PARKING ITi OTTERS S-NOCPA z�, I CA _ I 1 ENERGY CODE Comments or suggestions regarding this application should be provided in writing. Please provide comments to the Building Division by 5:00 p.m. on above date. REVIEWING DEPARTMENT/DIVISION APPROVED I I APPR0VED WITH CONDITICNS (1.`� I NOT APPROVED Signature of Director or Author REVIEWING DEPARTMENT/DIVISION ed Representative DATE %Z_ 11 APPROVED I I APPROVED WITH CONDITIONS 1 I NOT APPROVED HYDROLOGY REPORT �I G 1887 2nd Avenue Office Renton, Washington PREPARED FOR: Accord, Incorporated 1911 Maple Valley Highway Renton, Washington 90055 (206) 226-6656 PREPARED BY PACIFIC ENGINEERING COMPANY 304 MAIN AVENUE SOUTH, SUITE 300 RENTON, WA 98055 (206) 235-6688 DECEMBER 4, 1987 vit n GENERAL SITE DESCRIPTION This project is located just east.of the existing Taco Time on Rainier Avenue South. The site is bordered by South 2nd Street to the North. The total parcel size is .57 ✓ acres, if you include the Seattle pipeline right-of-way and the Lake Avenue South right-of-way. The average slope is 4 percent. Vegetation presently consists of grasses and a few trees with a portion of existing asphalt along the westerly property line. EXISTING DRAINAGE This site generates very little runoff, .23 CFS, which flows to a depression near the southeast property corner. The runoff apparently percelates into this depression. There is an existing 24 storm line along the easterly property line, however, it appears that runoff does not enter this line. PROPOSED DRAINAGE PLAN The detention system -was sized using the entire .57 acres and the King County Public Works Guidelines. The design storm is 10 year with a 10 year release rate. A single orifice design will be used. With such a small site, no temporary pond will be.utilized. The rational method was used for all calculations. The on -site storm system has been designed to transmit the runoff through a series of downspouts, tighlines, catchbasins and pipe into the detention system. From there, runoff will flow into the existing 24" storm system. APPENDICES 1. Vicinity Map 2. Existing Drainage 3. Proposed Drainage 4. Graphs and Charts VICINITY MAP APPENDIX 1 b.. 0 OOatquoua vm 'NO1Nxt4 'M1nno anNn— 0~4 VOC ti\l-gfi IoM •NOlN.Y AIMIIVNI A111V� il/Yr 11�1 •.'INI '011 OOOY :IIOi ve wmAu �Niu�t ns► Jai iti Iwi i o�v�' 0 y $ F r r i C r ; e I a jai I i j~ i,r _.i.-�_ .20 I I I I i 'I i i . 1 i t ,; .os•s l •.�I��I I i � I IJ d ti 7-7 92 Il•rl '.It IhJ iI �I IL. a tv o '" d Idlj I I:I ry �1 iC . i^oe III � .I .I �••- , , d ( I• I �,I 1•I I�. � dl � � � I � d Ii I k l \\• jl I l t !: los r.1 I ;q zs so u`. 1: I'I di 111 S i1M AV 1ib!'N1V11 1 EXISTING DRAIN.4 APPENDIX 2 m. 7 ngona wm No+i,i— "+n.qu anr44^w rj!ww voc M foll-lis local -IN01 4m 11 goM *01NI AVhUlD#*f AallYA 31011 1-61 t. 'Oul 'OU030Y :U01 u rr —d.- 7i-1 17�- I fl I I '.'-13-1 -A—A -0 illV1.1. O3Vj, 23 In fmiaYmn W2 wo ?U 0 (5 yy 22 2 .21 5 4 MON." " laft.p? 'J2 'Jil u IN ' !I I I;irs `` I rg NJ 2 'A to a 0 Qr.2S to i rJ iiiLnos 3f1N9*AV"1J3fk1Yi- 1PROPOSED DRAINAGEi W 2 2 APPENDIX 3 ,1Oj=4 7ACIFIC II[,--INGINEERING JOB l(COMPANY SHEET NO. CIVIL ENGINEERING AND PLANNING CONSULTANTS CALCULATED UV : ± j cell Ll . _ i ! ,L ' ... . . ... ! ` I ' �._. �j4T .. ,;.»._. !� L�'(P;r .. _.._=' .....�.4. .i_.`=.._;... I .._ .......�il......_....!..._._.........i............ �........._..i_._......... _... ._ . I I ! 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I_ �_ �_..__. i___.._..._._.......«........_;_..............._.i.__.«a... ^---; _ �...... - - -+--- --._I..._.. _...._�..,....__ _..._ ' ..._................................ ! F.._ _...._ _� ! �• t � i ! I .I._ I I I ! .._ __..........�.._....._.._i...... ..... i...... _}. _.y..»._....1... _......l....._ _....... .......................__. !.._......_.._....'......_._...;._..__....,.. _ ......-_.,..._....... • .:..._._._.,....._.. _._.«._._.. ....... _.._.,.._....._..j......... ... ;...._.._....»_...._.. i....__.....j..........�...__ . _...!..__....t..__.. I t I I : ,.. « _ .._ _.a..........«a.._._ .t....__._!.. _. i _ .._.t....._....1.. _. ! _._.. `.._..__..!_......«.. _ .. a....._....._ .._.».._ .._............i ! _ .._...�_...._._�. I I j l..._......._._� ... I ........M__..._. ......1:............!...........;.._._..._.;.........! .. « _. _.._.. �.__._.;.». .._..F..«.._........ , _.... i I : .......... ..... j............ 304 Main Avenue South Renton, Washington 93055 A - cc = Cd - L= S - yr Tc = Iryr - Qe = Qo - T - Vs - Vt. F M.DRAIN STORAGE REQUIREMENTS ri % �! Acres Area of. Basin Existinq co=efficient of imperviousness of Basin • ground" d ✓ Dev.el'oped co-efficient.of imperviousness of Basin as nlanned 1`70 LF Length (maximum of overland travel) 'Slone (average from Basin high* point to low point on..watercourse) �.� FPS Runoff. rate I . l3 = MIN Time of concentration from formula: ::.• '. , 10 + (L ; Vr(60)) _ .tc 1 , 5 U� Rainfall intensity from .rainfall _'curve //IN/HR CFS Existinq outflow from site using equation; CeIry= Qe 1117 -� CFS/AC. IA Maxirmum'outflow permitted per acre imperviousness from formula:_ _ . Qo Qe rCd /mI - N Storage time to capacity) from formula: I ��r;��- ✓ CF/AC Requi red 'vol ume of storage per acre in Basin from equation: 34zo C� z.a� Flo -�-7) CF -Required volume of storage for. this Basin from equation: VT.= VSAC0 CF . Storage. Required CF Storage' -Provided 910 C r 5.I azl,M'H �rUviDGC> roACIFIC ENGINEERING COMPANY CIVIL ENGINEERING ANO PLANNING CONSULTANTS JOB -1-1\,CQ SHEET CALCULATED OY 1 .............. : ± , 1 ..... , _...._ I i i I . __-.........,._Ik+G.�._ ..._...__ !....rj ._l.r -- ....._.t_ ......._.....__..............;...._ .......:......_...a ..._.._.._. I , _� _ I j ! I i i _....... ..... j__-J II ............. I I i f i : � l ± .._.. ......._....._.......i'I� .�.1iI(I ...... ._..._ _ .... �,Iji1' �_...__....._..........._._. r•,jF�. _._ ....... ... _ . ..... .._..._....,.. ...»_..i1i .._. .. 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F......»... .__. .._. i_._...t...__.......»....._...i............., I4.,m Q,l ............ 304 Main Avenue South Renton, WashinQlon 98055 RUNOFF FACTORS FOR STOR14 SEWERS FLAT ROLLING 0-5% >5% UNDEVELOPED LAND_ Wood & Forest ... 0.05 0.10 Sparse Trees & Ground Cover . . . . . . . 0.10 0.15 Light Grass to Bare Ground . . . . . . . 0.15 0.20 DEVELOPED AREA Pavement & Roofs . . . . . . . . . . . . 0.90 0.90 Gravel Roads & Parking Lots . . . . . . . 0.75 0.80 City Business 0.90 Apartment Dwelling Areas .. 0.80 0.85 Industrial Areas (Heavy) ... . . . .. . 0.70 0.80 Industrial Areas (Light) < . . . . 0.60 0.70 Earth Shoulder 0.50 0.50 Playground .. . ': : 0.25 `. O.30 Lawns, Meadows & Pastures ..: . . . . 0.20 0.25 Parks & Cemetery .::. 0.15 0.20 SINGLE FAMILY RESIDENTIAL (Dwelling Unit/Gross Acre) 1.0-1.5 DU/GA . . . . . . . . . . . . . . . . . . 0.30 1.5-3.0 DU/GA . . . . . . . . . . . . . . . . . . . 0.35 3.0-3.5 DU/GA . . . . . . . . . . . . . . . . . . . 0.40 3.5-4.0 DU/GA . . . . . . . . . . . . . . . . . . . 0.45 4.0-6.0 DU/GA 0.50 6.0-9.0 DU/GA . . . . . . . . . . . . . . . . . . . 0.60 9.0-15.0 DU/GA . . . . . . . . . . . . . . . . . . 0.70 'GRAPHS &' CHARTS, APPENDIX 4 or - KING COUNTY N Ul 50'� '� .3 .4 .5 4n 30 20 10 8 7 b `1 4 3 2 1 1 2 3 4 5 in 111 FAM /V�I NONE m WA�//�/�UIi1111 r� �i man INN WOUNI nun UMM. WA MINI WA 11MININ n���a�■■t��tr.�mumm�����v�®��U�n����o �un��moll ■■��un�.� n����t �i �i� .� �1�11U1��i�1',►'�/� E�// I�/�ItC'�/��������U�n�� s■��■v�����nr���a�n�■r�n�l��UU�UnIN 1111 1111111 .5' .5 .2 .3 .4 .5 1 2 3 4 5 10 20 VELOCITY IN FEET PER SECOND AVERAGE VELOCITIES FOR ESTIMATING TRAVEL TIME FOR OVERLAND FLOW 13 AREA RENTON- S EATT LE TACOM NORTH BEND ! SNOQUALNE, PASS YEAR DESIGN STORM TYPE OF OUTLET PEAK STORAGE TIME (MINUTES) ORIFICE WITH HEAD T=-25+ 1762 7o CONSTANT FLOW I T=-2541175 Ro ORIFICE WITH HEAD T=-25+ 1875 Qo CONSTANT FLOW ORIFICE WITH HEAD 1250 T=-25+ Qo 2255 T=-25+ —Q__o_ CONSTANT FLOW 1503 T=-25+� Q 0 ORIFICE .WITH HEAD T=-25+ 4076 . Qo CONSTANT FLOW -�J 2718 T=_25+ V ORIFICE WITH HEAD T=-25+ 2603 Qo SKY KOMISH ..CONSTANT FLOW--.'-. Tu_25f7,1 1735 MAXIMUM STO�j AG VOLUME AFT 3/ AC Vs = 2820 T T+ 40 QoT vs - 2820 T T+25•. - 60 QoT vs = 3000 T T + 2 5 40 QoT VS = 3000 T T+25 60 QoT Vs = 3607T _ 40 QoT T+25 VS - 3607 T T+25 6Q QoT vs = 6522 T T+25 - 40 QoT vs = 6522 T T+25 - 60 QoT vs - 4164 T _ 40..QoT T+25 Ys = 41_T+2 T - 60 QoT .25 YEAR DE IGN STOR PEAK STORAGE MAXIMUM STO F.c TIME (MINUTES) VOLUME (FT3/AC) T=-25+ f-L71-01, f;1425T=-25+_ 7=-25+ 2 994 Qo 1463 T=-25+ Q 0 T=-25+ 2706 1804 T=-25+ —- T=-25+ Sno13 3342 T=-25+ ---�— T=-25+ 3075 Qo T=-25+ 2050 Qo Ys = 3420 T _ 10 QoT T+25 vs = . 3420 T - 60 QoT T+25 Ys = 3510 T._ 40 Q T+25 -j, s = . 3510 T 7+2 - 60 QoT vs = 4329 T _ 40 QnT T + 2 5 V. s = . 4329 T _ 60 QoT T + 2 5 Ys = 80-20 •T - 40 f :T+25 vs = .8020 T :T+ - 6n QoT Ys = 4920 T _ 40 lnT T+25 Ys' - 4920 T _ 60 Qo T T+25 /000 -90o na0 1. o soo ccoot . Soo IDO v 0004 .000/ OOOS • D01?L .x 0 J� .DOA'! .0001 /Zo- /O O .000J 700 9; ~ .0004 JO .00t .ODDS• 4.0 64 � — .000L DOJ M _.DODB N 7r .004 .001 W _DOS o So I00 60 .DOt 90 (7 N ODB 70 V —.DOJ �J 60 {I .DO4 V ! M OZ - .00S �L — 7.0 SO J3 7-.006 JO — 40 44 17 OS _ .010 144 h 3.0 . t. iz 06 — JO - 24 OB —.OZD /D.0 e Q 2/ .10 h — 20 k4 .15 _ —.040 O •20 .OSD O IS kl —.060 v —.0B0 — '� /T •/00 /0 10 —9 d 7 8 20. 0 S 6 4 3 JO.0 2 N01VOORAP1I FOR COMPUT/NG 40.0 REQUIRED SIZE OF CIRCULAR DRAIN FL OWING FULL FOR 17 =0.0I2 OR r7 =0.024 1 �� CHART 2 Suers PLAN REVIEW ROUTING SLIP DATE. i z - Z. 3 APPLICANT: JOB ADDRESS: Z ti U Comments Due NATURE OF WORK: Comments Due T0: _ I I FIRE PREVENTION BUREAU I —I ENGINEERING DIVISION I I —I BUILDING CODE REVIEW TRAFFIC ENG. DIVISION ZONING &PARKING ------ UTILITIES ENG. DIVISION__— I ENERGY CODE ---- V ' pimps 5� 4'� 1? J� ( provided in writing. this application should on above date. comments or suggestions regarding 5;00 p. Please provide comments to the Building Division by REVIEWING DEPARTMENT/DIVISION _ I NOT APPROVED APPROVED APPROVED WITH CONDITIONS I _I I —I Signature of Director or Authorized Representative TE REVIEWING DEPARTMENT/DIVISION I I NOT APPROVED — APPROVED I I APPROVED WITH CONDITIONS Signature of Director or Author ed Repr se entative I E------ I-y PLAN REVIEWS No. LP 06 Project Name: Building Permit Number: Date to Utility Billing: Business or Use: Site Address: Owner/Billing Address: Tax Lot Number(s) Sauare Footage Assessment M7 DESCRIPTION ADDRESS DATE DATE - CHUCK'S DATE TO DUE DATE TO BUILDING DATE RCVD. DATE TO RECEIVED REVIEW BERGSTROM BUILDING DEPT. PLAN NO. PERMIT BILLING 12 Z 3-57! I- 5-�I /2 - --�& 1 /9 { i Z- z 3-cSg; I Z--23-� 3 i I I I I 1 ( I I I I I I