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HomeMy WebLinkAboutPacket, Pre PLANNER 1/10/2011 Date Distributed: 1-\\-\\ ~,11J\0. )~ . I~ RECEIVED . .' PRE-SUBMI13itfL ..: \; "'DISTRIBUTImv LIST: JAN 10 2011 By:1>\<'E--.S(jb~ PQ~ I D-t 50~ /' Dave Puent - Building / Gilbert GordonlMelissa Fechtel:"-' Fire ~ Michael Liebler...,... Traffic /' Matt Stouder - Public Works/Engineering Chris Moorhead, Surveying Planner, ~-' . . . . CityofSpringfield Development Services Department 225 Fifth Street Springfield, OR 97477 541-726-3753 Phone 541-726-3689 Fax S\~,:lt~:ii . iI!ii OREGON Pre-Submittal Meeting Case Number Assigned: PRE11-00002 Date Submitted: 0111012011 Project Name: Project Description: East Congregation of Jehovahs Witness Pre-Submittal meeting for Tentative Site Plan Review for new church Note: Original address of 885 S 42nd bas been retired as original structure was demolisbed. A new address will be created at time of building permit submittal. Applicatiou Type: Job Address: Assessor's & Tax Lot #: Pre-Submittal Site Plan Tentative o Vacant - S 42nd 1802052108700 'C:<-)!\i.>'" .,., .., '>oC ,it .:1~,;;~~,~;:"~".""'~'ft._W,',;'r.:.,,,,c,,,,-;:"f;\',,,~,<~;[>-~,;;~~",;"..'i-';1:~1<':'t~'.-'W>'\f,f.l"""4":-~;T~'",""'7..,~t'.~'::Jr'.;m;;:~--:.q;,:_'~.;;<'~:'"1?," ".~c"Jt;:;c,~_~'i~"'~-~'c?i'~~_'t~;<t:< '. DISCLAIMER: Applications will not be exempt from Development Code or procedural amendments that may occur between the time of the Pre-Submittal Meeting and Submittal of the Application for Development Review. Please contact our office at 54J-726-3753 with any questions or concerns. A Planner will be assigned the following business day and will contact you to confirm tbe meeting date and time. YR[/)OW-I TT-f\1--M.-Tq .-~"" P"""'D '-""- ~T.-.rJ "!,!'~ (r,",if.., j" '<~ .~i '!, ' ~ ~' .' 1A f\ ,I, fJ "'SlZl - , f' ,1 '''''', '" 6 t',." ".'J ~-" ~. '-', ""l'1 · J' ~"," ..~ ~........".,'nt;i~ l','w.J2......:-;:;. PIZ.::f -IF PfuJ\ 1- D OOOJ....., JAN 1 0 2011 . S'r C:\temp\Pl-All.PRESUB-f {ADFOfB8E-9B4B-47AD-895C-6ACE98DFFBF5}.rpt y '" -' 1/1112011 . . . . Pre-Submittal Meeting Development Services Department Room 616 PRE-SUBMITTAL MEETING DATE:' Tuesday, January 18,2011 1. PRE-SUBMITTAL MTG #PRE11-00002 (Site Plan Tentative) - EAST CONGREGATION Assessor's Map: 18-02-05-21 TL 8700 OF JEHOVAH'S WITNESSES Address: Vacant - S 42nd Street Existing Use: Vacant The applicant submitted plans to construct a new 4,608 square foot church building and asphalt par~g lot for East Congregation of Jehovah's Witnesses. Meeting DatefTirne: Tuesday, January 18,2011 11:00 - noon DSD 616 Planoer: Steve Hopkins ~='" 11"= .,,~, "',,.co ," "B~"'-"" D H ~ - if ~j - i!'~ fl 1;' '". ~~~ ,.,',<><,:"! ,';'I \? .of! !~!':>'Lt ~ ,'~ ' '" 1 q 'iii' ;~ , .b..m \J ~...'l6'!E,,' Ci) ~iJ ~...;: JAN 10 2011 B.,v. y" p~€-Su6M..lrr~ 1Jv'9 I i v . . ,City of Springfield Development Services Department 225 Fifth Street Springfield, OR 97477 Site Plan Review " . Address: (, A licant's Re Com an : Address: qqO e.. lL . , . > ' H'':: ,', '.. _.. '-"- - .." " , .. ~.,..., -, ,- .. '".; '. . . S /' .(/Ac;}fll/ Owner: T-II s.r fLIJCt=IC.P> IN,)'MCqfl()J~r WmJfi. Com an $4tt[ 45 1-e.ovc Fax: Phone: 541 7:J-(, 0130 Fax: Address: >c,','" """.",.,,,~,,,....,~,-",.~,,,""i:_';;' !""""":"',*,""~ ". Acres J!ijI S uare Feet 0 Pro osed Name of Pro"ect: ~012..c...IA ":"', "'>< ,,~, ,_" ',.,. '.",'-.:~"_,,,""'>" .""""~". '''-"''''-''"~,*,;;~~'''''''' < '".;':. .""....' '_",."~<,, co.'., . ~',i,>C'-""<':;,9.; :~}~"~...,.."...,,,, ..~';; -"~ '. ;,.;..>,..-,,~v.,~-. i-.","':~,<"'" ; \_',' , .'- ,.,.'0.. Description of Pro osal: If you are filling in this form by hand, please attach your proposal description to thIs application. "La Associated A Iications: Si ns: Pre-Sub Case No.: 1kE 1\-00002. Date: \ -.10 -I \ Reviewed b Case No.: Date: A Iication Fee: Technical Fee: $ TOTAL FEES: PROJECT NUMBE Revised 11/19/09 PR.e-SU~TlAG . 1 of 10 JAN 1 0 2011 Bv: spr_map Page 1 of 1 . . PRE11-00002~8-02-05-21 TL 8700 pre!ubmittal Mtg (Site Tentative) East Congregation of Jehovah's Witnesses I I I ' " ',,' -'"" ;', , . , ' , , . t- III Q Z N ot III ", ' :1 ------ t- III Q '. Z N ot III j ,I: .~ ,~. ,/ ;f/~: 4;i;~t~ '~-- ^ Pf2..E- 50 Bll\ t T\'f'(L.. RT9 , =:"""1'), ;:'ii'!:3",~..il .(~1.~ :?'~~\ ~ ':'~ P! ~"",:"Eil D ~\'-''''i' ~ ..1' '-1l ('\ _ (' '% ;/1 ~ " ' t~~? ":;i.f.'-':' ~ 'i..,:",J>'02.j 'B. .~. ~_,nl;ll , ':"'""1i li; -. ~ '" t\ r:l ';'...~ ~t . i~ ~.:;:; ~09 i:~51!':i1::: W ~ JAN 1 0 2011 q~"'~ir~ W'jlJ http://spifs020/mapguide2009/mapviewerphp/printablepage,php?SESSION=307d9248-0000-1000,,,I/II/2011 . . . . \. TENTATIVE SITE PLAN FOR i , ' , I EAST CONGREGATION OF JEHOV AHS "fITNESSES Map 18-02-05-21, Tax Lot 8700 ! i i EA'5i' %. C1f ~'<s VJ',N~ The property proposed for development is currently owned by ~t~':8 ~aelmeH. The property currently has one single family dwelling on it llIld three exlsting stora:ge sheds on site to be removed. ' " ' i' I , ' The subject property contains approximately I.S acres llIld is proposetl to be improved with a 4,60S square foot building llIld an asphalt parking lot which will contiUn approximately 79 parking spaces. The Metro Plan designation and zoning classificatioA for this and all adjacent properties is LDR - Low Density Residential. The proposed developinent will be constructed under the site plan review process. i Proposed improvements will include approximately 34,000 ofimperyious surface, parking luminaires, 19,400 square feet oflandscaping llIld connection to existing utilities in South 42nd Street as shown on the' Site Plan. The existing overhead power and setvice pole will be removed and 'the proposed building will be served With underground wire utilities. The water line Will ' connect to the site via South 42nd Street. The sariitary sewer line will,~onnect to the site via the S inch line in South 42nd Street. ' APPLICATION NARRATIVE . . . I 'Those issues which may ;equITe a more detailed discussion are addre~sed as follows: , ' I , Storm Sewer - Storm drainage for the proposed development Will be \lirected to new catch basins in the proposed parking lot~ ' The new stormwater hydro-carbon separator catch basins will drain' . - .'" - 1 via new 10" pipes then discharge into a Raingarden for storage/Etreatrne,nt then to an existing IS" pipe which drains to an existing manhole in South 42nd Street. Th,~ system waS sized in accordance with the'recently constructed improvements of 42nd Stree~. " , : " I I , " Soil types oil the site (according to the SCS Soil Survey) are 90% Malabon Urban Land Complex , . I. and 10% Cloquato Silt Loam. These units are mainly for urban development but, is also used for yards, parks and 'open areas around and between buildings which willi work well with post' " development conditions." , \ , ' I, ! RE"Fq\ ffE""""'D i' " rhP,"""' ), , :.., \~I ~t1T.,.:a;] r~1 :Jm' , ! JAN 1 0 2011 By'" '- 'PR-E\.:u ~ ~~TI ~ ..Ill- y--~ . . . Streets - This development will be served by one existing entrance wl)ich will be widened to 26 feet. One entrance will be removed as shown on the site plan from South 42nd Street and the proposed entrance will be the existing southern driveway from South;42nd Street. Trees - The subject site contains trees as shown on the Site Plan. Cutrent planS are to protect all trees that are located where on site. The trees to remain will be addre~sed during the private improvement process. New trees shown on this plan will be included lduring the private improvement process and will be. subject for review by City staff to D;UfIll and meet the City's Code and requirements for landscaping. . Parking - The proposed building for this site is to be 4,608 square feet as stated above. The primary assembly area is 2,484 sq. ft., Table 4.6-2 of the SDC requirds I parking space for each 100 sq. ft. of floor area which amounts to 25 spaces, the remainder of the building is 2,124 sq. ft. and Table 4.6-2 of the SDC requires I parking space for each 200 sq.:ft. of gross floor area which amounts to 12 parking spaces for a total of 47 parking spaces require~ by code. The applicant proposes a total of 74 parking spaces which exceeds the amount required per code. Parking required for disabled persons was determined using the Uniform Buillling Code which states 1 disabled space per 25 standard parking spaces. Since the proposed patking lot design includes 56 standard spaces and 18 compact spaces the applicant is required to h~ve 3 disabled parking spaces, however the applicant has proposed 5 which exceeds the reqJirement. Finally, bicycle parking was determined using Table 4.6-3 of the SDC whereby I bicycle parking space is required for every 40 fixed seats in the main assembly area. The building is proposed to contain 144 fixed seats. This translates to a requirement for 4 bicycle parking: spaces. The Site Plan indicates 8 bicycle parking spaces which exceeds the minimum requirements. Area of Future Expansion - The applicant is proposing to grade this p:ortion of the property as to not adversely affect the neighboring properties and to allow natural vegetation to grow. Also as shown on the site plan a 6" extruded curb will separate the parking ar~a from that area. . . ; .j f"'~"u."'?.."' "'''"''oF'''''' Q - c, r · .' ~~"''e'"'''''-'' itl:_~:>'; " ~ {~/5-""l ~.l r~~ \\!~ ,.'t<,~" !;;'~,f:cJ ~ '..~mD' ';'.'.'~'-=-.' . J '. ~""" , lk""" JAN 1 0 2011 Bu; ]J ~'-~-'--",-~=- fRE -S0 6M- \ Tfl't"L- . '.- ..", _.- . ~- . 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'" , ,'...~~ ,- ~~"~" :., T10 1 '~ j;) '~,;-1 ~:. fi ',\j [~ -' ~hm:~, ",:~;:;p ~::?;:i::'.' 1: c, ~- b:~. JAN 1 0 2011 """ ';.';- ...'. '," ", ,. '~'" ~ ~ ;i.. <::0 ':) v1 w et , L. ,:~I . ENGINEERING & SURVEYING ING. STORM DRAINAGE STUDY for the I .1 I I . . _ i EAST CONGREGATION OF JEHOV All'S WIl'NESSES , I I I I EXPIRES MARCH 16, 2009 PR8-SlJ6turr-1tL- I _~ECE'VED~~~,..,."O~ , JAN 1 0 2011 By: j I CIVIL/ENGINEERING 0 SURVEYING : . P.O. BOX 252: EUGENE, OR 97402-{)152 990 OBlE ST. 541/485-4505 FAX 541/485-5624 wwW.POAGE.NET ~'~~~'~~C~Ei;"S~.,. ,,' ";,:,;,., '.:_" " >,'1"".' ".." PUBLIC.WO.R.KSDEP AR'FME:NT! EngmeeringBivision "Phone: (54LJ 720c3753) i,;, Fa'Xo.(54 1) 736,1021 . ., ~~-,.. _ _ _ _ '.' """ _. - . ~..;:., :'."I_<",~~~:;'<~',,'_:~:'\~:'<':-~'~:"'<:~.;.:,'~i: _"'~':"';'/"';'" . , S'FORMw ATER..MANAGEMENT'SYSTEMSCOPEEWWORk ',', ,"::"'~':;:;.':~~J1~~':'J.'J:',";".",~ ' , " . ---"_ (Area below this line filled out by Applicant) -_: , (please return to Matt Stouder@CityofSpringfieldPublic Works EngineiP.ng; Fax # 736-1021, Phone #,.736-1035.)' , Project Name: ,..s~OVA\-\'.J ,kI~N~~S? .CMo..I~pplic~nt:.:r~o"~.,, \,L 1~,M'~~ Assess()rs Parcel #: I CO ..Oz. - 0'>, Z,I ''11.- ",,'l!:lwo Date: \"'l;-l - 0 ' Lan,dUs~(s):. LoiJ ~'::>I+~ \Z.e;\t::lEI.l-r,4- Pho~e#: (?41)/Z,(P-C>\~'S Project SIze (Acres):. '., -'2-. o. A~' , ,Fax #: Armrox. Impervious Area: ~ ,40:-\ ~l!:. " Email: .' 'V AN ri~J;t'W'~i~~;fjr,';2i~'-~'l:fL;:;._r., <'<d},'. .: -,t',,:. "'.!:_ __ . ,)iI!.;,!:i7;ct:k;S,~'~-;::1;;"L;it..;~a,<<-(.;\'J1.~;~..~it.:t,.l;:t~,t~.:::.'_~l'}.i;,~",i. ?~;~, 1 _" , .", . Project Description (Include a copy ofAss'essor's map): 'NS-J ~OO"'/r ljti..l~ " ',' Drainage Proposal (Public connection(s), discharge location(s), etc, Attach additional sheet(s) if necessary: , ,N-,-~~-:e;;\~{7~AiN~!'o: 'to ~G ~'TE.-"'t> AMt. P1Z-Al,,\eO :-CO ~~C 1U\,1'l ~tA""Oe:M ON-....I~ <VIl'+( O\l~fWl<-I 'Ptz:-",,\'1I~ "'to ~-+i...t!Nt'\ i\{ANM<lLe:' IN. a,'Z-j.l~l.;:ol~ Proposed Stormwater Best Management Practices: N~ -p.:Nl-t 6.fl,e\)e.Nt " . , ' '. - (Area below this line filled out hv the Citv and Returned to the Auulicant) ',' (At a minimum, ai/boxes checked by the Ciry on thejront dnd back of this sheet shall be submitted for'an cij)plication to'be corhpleteforsubmittal, alth0tgh'iJther"r~quire~entSmaY benecessafy.) Drainage StudvTvpe (EDSPM S~ction4;03m: (Note. DR may be substituted for Ra~onaJ Method) , D Small Site Study.:" (use Rati~narMefuod forcalculati~n;) O,Mid-Lyvel Development Study l' (rise unit Hydrograph Method for calculations) , , q , ,Pull Dra.rnage DevelopmimtStudy ~ (;"e Unit Hydrogi'aph M~thod for calculations) " Enviroumental Considerations': '0: WellhbadZone: o ~etlai1d1Riparian: o , Sbil Type: ' DoWnstream Analvsis: ON/A, o Flow line for starting water surface elevation: o Design HGL to use for starting water surface elevation: o Manhole/Junction to take analysis to: o Hillside De~elopment: o FloodwaylFloodpJain: o Other Jurisdictions: rinmeld, emllil: mstouder oi.s rinufield.or.ns, FAX: 541 736-1021 Revised 11120/2006 Brenda Jones '. ,. t. . ,. _. ;il' ';"::~;~;:'i~~.,:;';\; ~~' ,~" .... -"':'" _.,~ .-,,:,~j':.~.~,,::..i',~t;:E,Y~(~L;.." " ,'..., , , . . '''':''i',;'~. :..'\. ..', :"" .: :~:' " e0JVJ:E:'L~TE,$'I}JD)}:iTEN;I:~ '. i>:" "', ", ", ',j.' . '",' ..'I,~O'.9,~.C~~~S~~lY;<;:"~ <', :..,.... '* Bbsi{iup~n."th~'info;maiio~p~;vided'o~'.thefro~iofthis sheet" the]oiiowing ~ep!esents, aminipzuin'ofwh'at i~-needeafor an' dpplication tobecompleteJ~rsubinittah~ith:fesP?ct to cb:ainage; however, thiS,!i;',shOu~ldfz;O/bi uS~din'liep olthe SprinIIfi:eld : Developm'ent Code (SDCJ.~or the 'City 'sEngineering Design Mimijal. Compiiemce withthese'requjremel1ts doeSTlot c'oristitute site approval;'Additionalsite'Specific information may bereqt1i~ed 'Note: ,Upon scdpingsheet'iubmittal, ensure completedfarm has . beensignedin the space provided belr7W:" ." , , .. . I lliterini Design St:u:ldardslWater QualitY (EDSPM Chapter 3) Req'd N/A . , . o ,0 AIi non-building rooftop (l:!BR) impervious surfaces shall be pre:treated (e.g', multi-chambered catChbasinw!oil . filtration media) for stormwatOr quality, Additionally, a minimum of 50% ofibe NBR impervious sUrface shall be . treated by vegetate<! ;"ethods. ,: .. . , ' " .' , " '.. , o 0 Where reqUired, vegetative storm~er design shall beconsisteni'Withinterim design statidards (EDSPM Section 3,02), set forth by the Bureau of Environmental Services (BES) or Clean Water ServiCes (CWS) , [j D For new"NBR impervious 'ar~a les'sthan 15,000 square feet, a ~implified design approach may be followed' as specified by the BES for vegetative treatment ... . "" .. . . . ..' . D': 0 If a stormwater treatment swale is pI.opased, submit calcwations/specifications for siiing, velocity; flow; side slopes, ~ottomslop~, and st;ed mix' conSistent With either BES or c~? .req~.'~t?EmtS'-.' .. '. o . 0 Water QUality' calcUlatious as required in Section 3.03.1 of the EDSPM' o 0 All building rooftop ni;unted equil'inen~ ot other,fl"idconfuiD.irtg equipmerit located outSide of the building, snall -be provided 'With secondary ~ontainment-?r weather resistant ericlosure: . .. General Sfudy Requirements (EDSPMBection 4,03) . -D D' 'Drainage study>pr.epared by a Professional Civil Engineer lic~:riSed U; the'state'ofOregon. D. . D, A complete drainage study,. as required in EDSPM Section 4.03. I, including ahydrolo!iical siudy map. 0' D 'CaJctilatlon's showing system capacity for a 2-year storm event-and overflow effects ofa 25-yeat storm event. o 0 . The time of concentration (Tc) sball he determined 'using a 10 mllmte'startrune for developed basins, , Review of Downstream System (EDSPM Section 4,03.4.C) D, D, A downstream drain,;ge analysis as described in EDSPMSectio'; 4.03A.C. On.site drainage shall be governed by the . .' .' Oregon Plumbing Specialty Code (OPSC), , .. . . '0 0 Elevations of the HGL and flow lines for both city and private systemS where appiicable, . .' . . .' . . , c " . .." Designof Storm Syst~nis (EDSPM Secti.on'4.04) , .' . . . , . o 0 Flo,," liries,iHopes, 'rim elevations, pipe tYPe and siZes clearly indicated on the plan set: . ' , D' .... 0 M?umUm: pipe cover shall be 18 inches forreinforcedpipeand 36 inches fmplain concreU;and plastic pipe materials; or properei1gineering.calculations shall be provided when less.' The cover shall be SUfficient to support an 80,000 lb , load without failure oflbe pipe structure. . ... ........, o D, 1vf~~riillg)s ''ll'' values for. pipes shall be c~nsiste.nt ~itll Table 4-1 ofthe.EDSP~ . All 'storiti. pipes' shall bedesi~ed to achieve a minimum velocity of three (3) feet per second at'05 pipe full based on Table ~Las well.' "1 . '.:'.' ,. ... .' ". OtiterlMisi,. ." ." , . .,.." '. " D.: O'fudstiilg .and p;op~sed .C~~~~uf;) 'lo~cat~d' at one f~ot 'interVal:, 'rn:cl~de sp'ot el~,:atlori.s.~(l':iite.grad~'s showing how site "drainS' "..' '. . . " .' . D. 0 "~i~ate ~to~wa~r ~eroents shill be dearly de~i~ted on plans :~hen. pr:ivite storili~~te~ flows fro~ one property to another ' ,.. .' ..' .. .... o ~ ..' D Diywells shall not receive rilliofffrom any surface w/o.beihg ~eated by one ~r.mbre,BMPs,wifu the exception of residential building roofs (EDSP Section 3.03 .4.A). Additional provisions apply to this as required by the DEQ. Refer to the.website: www;dea.state.or.us/walfrroundwa!llichome.hc~ fo.r more information, . o D. Detention ponds shall be designed to limit runoff to pre-dev~lopment rates for the 2 through 25-year storm events . . . " h . . *This form shall be incZude4- ~ an attachment. inside the front cover, 0/ the stqrmwaier study * IMPORTANT: ENGINEER PLEASE READ BELOW AND SIGN! . As the engineer of record, I hereby certify the above required items are complete .and included with the submitted stormwater study and plan set. Signature: Date: Re,,;,sed 1214/2006 Brenda Jones . /6." ;'~'!~':;Y:li_:.:i::;:j~:.'~~,0fl:~;;;."},:~ /.'~ ...... ~ . - ".' ,~ ., ... _i',e'., "".. ~Y~:;.;~:~'~:/~::;::j~~~{ -"", \:-, '.' " '.'.':.,. .'. ' .... ' .... .,. .:c": ,.. .:.... ......., ".' >'" .... ..:.:' PUBLICWORKs DEPARTMENT I Engineering Divisi6ri <Phond54IY~26-3.753 ,:'Pax: (541) 736-1621 . . . ,.' . .' .. - "..' ;,..,. . '- - .. ',.' MARCH 5; 2004 '.. .... . . ". REQUIRED STORMW ATER SCOPING SHEET USE'POLICY: . . . .',' ..: , ,,~ \ '. .. . . In October 2003, Springfield Public Works released a trial "storinwaterscoping sheet;" provided toMIp . engmeers.and developers meet storrnwater requiremehtsin the' Springfield Development Code (SDe) and Engineering Design StandardS and ProcediJres Mariual (EDSPM). After a five nionthtrial period, it became . apparent that users of the scoping sheet submitted much more complete applications than non-users. An added bonus was a decrease in the overall review time spent on the applications, resuItingm quicker notice of decisionS. ' ..' . . . .' .. . .' . '. . As~fesuit of the benefits of the scopjng sheets,'the City. has' decided to make their use a mandatory'process. As of April 12, 2004, the use of storrnwater scoping sheets ;"ill be required for'all applicarionswhichtequire '. development review. All applicatioUs subrrlitted.to the City shail provide four (4) copies of a completed storrnwater scoping sheet with the application packet. AttachedWith this letter is the latest version of the' scoping sheet, which reflects changes requested by the development ciJminuuity. . . . . .' , .. . '". .. .' '.. '. t, . .. .. . PLEA~m N()TE: EilJBMIITED APPLICATIONS Vv1LLNOWBE REQUIRED TO suBMIT A COMPLETED STORMW ATER SCOPING SHEET, STORMW ATER STUDY AND PLANS IN CONFORMANCE WITH THE SCOPE REQUIREMENTS. ,. . DIRECTIONS FOR USING STORMWATER SCOPINGSHEETS ARE AS FOLLOWS: , . L Obtak scoping sheet from application packet, city. weosite,,,.. other location. . . 2.' Fill .ont project information (fop, half of front sheet) prior to commencement of work on storinwater study (note: do not sign scoping sheet until it is received fiom the CitY With requirements checked). 3... Mail, fax, or email aU pages to: City of Spriligfie!d; Public WorkS Dept.,' Attn: Matt Stonder . 4. "Receivecompleted scoping sheet (filled "ut by .the City) indicatingip.injll1~mreqriirements for a . complefestormwater study. .' .' . .., . ..' .......... 5. ". Inciude'four (4) copies of compl~te scopingsheet (sigD~dby ei1gi~eer atthe b';rti)Jriofpag~ 2); s'toiri:rwater stridy and plans thatcompiy'witIi.tbemiriiimim required scope~ithsubmitt'd of' . . appliCation packet. The scopilig sheet.sh'all'lieincIi..:Iedas an attachmellt;inside the front cover of the' 's~oimwater study. Sform;"irter scopingsheetsGanb~'funnd with all ~pplicatio~ packets (City websitean~ the Public.w 6rks front . couriterj as well.aS on the Public Works webpage.at either: ~'W:ci.sprillgfie]d.or.us/PubworkS/whatsnew.htm . . or under ille link for "fillableforms" at www.ci.springfield.o~,us/Pubworks/Design/start.htrn, Tharlk you in .ad~ancefor working withtheCiryofSpringfield with this new process, . . . Sincerely; . . ~ Matt Stouder, EIT City of Springfield, Public W orks/Engineering 'Ema.il: 'mstouder@ci.springfield.or.us Phone: (541) 736-1035 . Fax: (541)736-1021 Revised 1l/20/2006 Brenda Jones .L ..' . , i .1 OVERVIEW This storm drainage study is being prepared in accordance with the City of Springfield Engineering Design Standards and Procedures Manual (EDSPM). Bebuse it is a non-residential development that is larger than 1 acre, the Drainage Study type requirbd for this projed, given the parameters specified in Section 4.03.2 of the EDSPM, is a Medium-L~vel Study. The hydrologic calculations shown on the followmg pages are based on the Santa Barbara Urban Hydrograph Method (SBUH) for calculating runoff generated from the 2, 5, 25, ana 100 year storm events. I Runoff from the proposed development is to be collected in a private ~ipe system and conveyed to the on-site retention/infiltration pond (Raingarden) as shown on the'plans. All runoff from the site will be conveyed to the Raingarden which is sized.to handle the d6sign storms per the EDSPM without the need for infiltration or overflow as outlined in thlis study. The Raingarden will have an oyerflow catch basin to be installed as shown and connected to the public system in 42nd Street by extending the existing 18" storm pipe stubbed to the prdperty from the manhole in the street. The proposed stormwater management system is sized usin'g the SBUH considering no infiltration, ie runoff from the entire storm can be stored in the Raingarden. However, to . . j . make sure the drawdown time meets the standards 6fthe EDSPM the ~ystei:n was also analyzed using infiltration. I HYDROLOGIC CALCULATIONS The site contains about 75,900 square feet (sf) which when "fully dev~loped" will hav~ approximately 55,900 sf of impervious areas and 20,000 sf of perviouJ areas. "Fully developed" assumes future paving of the 16,400 sf overflow parking area located ih the southeast corner .of 'the site as shown (shown now as gravel). The development proposed ~ith this application includes construction of a 4,900 sfbuildlng, and 34,600. sf of paved irrIpervious surfaces (pc concrete & asphaltic concrete), 16,400 sf of gravel, and 20,000 sf oflaj1dscaping and Raingarden. Stormwater runoff generated from these areas was calculated as shown on the.attached . spreadsheets using the SBUH method for the purposes of determining ~etention storage needs for each design storm and are surriinarized below. The 2-year storm (3.3 ipches in 24 hour storm)' will generate a peak design flowrate from the site to the Raingarden oflabout 0.55 cfs and results in a storage need of 5,831 cubic feet (cf), without infiltration. The 5-Y9ar storm (3:8 inches in 24 hour storm) will generate a peak design flowratefrom the site to the Riringarden of about 0.65 cfs and results in a storage need of 6,851 cf. The 25-year stOlID (4.8 inchek in 24 hour storm) wiil generate a peak design flowrate from the site to the Raingarden of abo\lt 0.84 cfs and results in a storage need of 8,909 cf. The lOO-year storm was also evaluated to determine if the emergency overflow has sufficient capacity to pass the 100-year flow. The 100-ybar storin (5.2 inches in 24 . -!leuf-sferm) wilIgeneFat8' a-peak dooign: flGwr.at(}E;Gmt!H; sit" tGth"R~ingarden of abautcCl:92cfs . and results in a storage need of9,736 cf. I ill order to size the conveyance system, the rational method for a 5-ye~ design storm was used. Haestaed Methods Flowmaster software was then used to show how the proposed system . performs using the flows generated by the rational method for each are:~, The site is divided into four (4) basic areas, the building (5,856 sf, inc!. overhang) being one otthem and then the pavinghdivided into three (3) equal areas, 11,530 sf each. The collection systerh is divided into two with .one pipe system collecting tWo paving areas, areas Al and AZ, corresp6nding with flow rates Ql arid Q2 as shown in the attached calculations. The other pipe system c611ects the building and . I , .L . , , -I . I I I the other paved area, area A3 which corresponds with Q3 of the attaclied calculations. The 5- . I year flow rates are 0.50 cfs, 1.0 cfs, and 0.72 cfs for Ql, Q2, and Q3 respectively. 1 i STORM MANAGEMENT SYSTEM ANALYSIS I , The Raingarden is approximately 62 feet by 107 feet (top to top) and ~illhold approximately 12,565 cubic feet (d) wben full (2.25 ft depth). The lowest point oftl\e top of grate (sloped grate) for the overflow catch basin is to be constructed about 1. 7:) fee~ from tbe bottom of the Raingarden and will result in a Raingarden storage of approximately ~,337 cf prior to overflow to the publIc system. This IS more volume than the 25-year storm event will produce and thus the proposed Raingarden can handle flows .from the site for up to and induding the 25-year event without overflow. The 1 OO~year event would overflow to the public system but only for the last 100 minutes of the storm where the design flowrate is only 0.07 cfs.. The slope of the existing 18'; public pipe stubbed to the property from 42"d Street is 0.12%, and[bas the capacity to handle such a small flowrate. At a slope of O. 12% (0.0012 ftJfl) it would be able to pass a 0.07 cfs flow with less than 2 inches of water in the pipe (9% full). I , I The conveyance system was sized as described above using the RatioJal Method and Haestaed Methods Flowmaster software. The pipe, pi, that is to convey flow frbm area AI; is a 6 inch pipe sloped at 0.70% (0.007 ftJft) and will be 74% full with a velocitybf3.2 feet per second (iPs) . at the 5~year design flow, Ql equals 0.50 cfs. The pipe,P2, thaiis to :Convey flow from areas Al and A2 to the Raingarden, is a 10 inch pipe sloped at 0.50% (0.005 ftJit) and will be 53% full willi a velocity of 3.4 iPs at the 5-year design flow, Q2 equals 1.0 cfs. IThe pipe, P3, that is to .convey flow from area A3, is sloped at 1.0% (0.01 ftJfl) and will be 501% full with ayelocity of 4.1 iPs at the 5-year design flow, Q3 equals 0.72 cfs. As sucb all three pipes meet standard engineering practices for stormwater conveyance. The pipes also have~ more than 1.5 feet of cover as speCified in the EDSPM. ! i . . I The roof drain system was sized on the plans to reflect building code standards, being 4 or 6 inch pipes sloped at 1.0% to drain the roof areas of the proposed building. The 4 inch pipe along the . east side of the ~uilding will carry runoff from a total of 3,504 sf. Thel4 inch pipe along the west SIde of the bUIlding WIll collect TUlloff from 2,352 sf of roof area. BUII,dlllg code allows up to 3760 sf of roof area for a 4 inch pipe at 1.0%. Where the 'two 4 inch pipes come together, the. piRe becomes a 6 inch pipe which can handle up to 10,700 sfper the bjJilding code (@ 1.0%). CONCLusioNS . Based on the design criteria requirements of the EElSPM developmen.t'bf iliis pmperty Ganbe . , accommodated with the proposed improvements as discussed above. The proposed diwelopi.nent complies with the stotrnwater criteria oftheEDSPM in that all runoff generateci'from the site for up to and including the 25-year design storm is retained on-site and wil,l be infiltrated into the groUlld. In the event of other extreme StOlID events, TUlloff could overflow to the street via the 18" public pipe. The public drainage system will not be adversely imp~cted by any . improvements, proposed or future, for this property. The proposed stOlinwater management. system will comply with all other applicab.le state ~d local regulations! andean be more fully addressed at the tIme of the bUIlding permIt applIcatJOn. ! I I ,~ re J STORM DRAINAGE PLAN I e: I ! - , " : , - i I , I " '<-1- c '" o ,. Gl '" '" z I z Gl '" ~ ~ ~ .Gl o ... .~~ ~~ ~~ <" O' ~~ .. ~~ , 0 i~ ;s 80 .z.!:; O. .~~ ;; z " ~~~~ O~ ~;,:;z;." . .<:;;~~ ';[;>fJ -- . gdi'iia~ ~@~~ fZ ~o z '""" ~ ~.~a :j iii i'i ~, , I ~ ~ o . ~ ~~~ O. '" ~~ > G::l;d ," 0 ~~~ !i Xn , OJ , . ~~~s~~ > >>~~:;O'" ~ ,: -Oic ,. ffi~~~"'~ U1 ;:~F~;:: 9.......>." ~! .:::: .:~~:~,~ :;~~~~ ;l . -..; ~ ~. o 1';'<:'-'<- ...~o~ ~~~~ ;""ii_,,, ~~~~ ':'::::;;1: ~;~ . . -, ~~ F -. ~! '~:.-~ .-.{m;.,i:,,?~~::~~~~~' . - Q . - . .w.---;-';-" ";"'E;"'';l;':~u&.'')U'''''''''''- , ",' 1 -~--i~-~ - .. ! ~ tJj >- en '-J n o zen o H. f;i i:cl · 0 OJ *:S">- r<, ~:~d ~ ~. b~O - 5f~:;.z 0 -..- . .~ ~8;:;;:O~. .g~"" ~P"" . . . o.,.,:e l:Il t:j., ~r~~ .L;.: o '0.0 Z ....."'d "'r< ~.~ en ~ ~ '-J ~ en en en ,en , . ~' . Y:JiG.'+/- ;;: .<: I"~;~ 8 'f;l3?;g. i :~; ~ 5gp~ @ ~!"!~ 3 ~~~: ~ ....050 .. :0;"'...... ~ ~~: _ .~fR-; -,~, ~'~~~ " ~sg~ "':'. '''''I~~' ~ ~:i~. ~ ~i~i __~ siB i . ,. i~ E"'P ~~~ J1=<- !i:~< ....'"" ~~ :i~~ ~. ,~!!: in", ~61' __ "_~" .'j,':'t; ~~;::~~ j~ ~~;.~ e~ ~i~ ~~. ~~.: ;i.~~ ~~ ~a"~ ~! ",ea !~~ ~ e;~'~ i€!? too ~" ~ ~5,'~ ., "<0 ~ o ~ -~ ~ ~ ~ ~ ." 'ii~ ~ ~~ <0:>: '" e"" I"/; i! .g '"':~ u;. ~ -~ 0;;;* ~;l18 s... ::~ ;i'~~ ~8 c:f~ ~~ .~~ '":"" ~!:z ~:;.".;o~' ::t ....... ';~.t~ ii~ ~r ..'< ~~ ~~ i~: ~:; ~;~ ,,'< ~ .-~ ~g ~~ ..... ~...o ~. 'S~ ?'~ ~S~ ~ "'~ : !r' ~ ~';; .~ . ,. .. ~ ~~ ~!; " ~ ~ ~ ~ ,.. ~. P. ,~ ~ , I I i I ;1 flff 11 . ' : I 09 ! rl. ." " '" B' i I ! ~:"~:I: ;~ :::; ,,,., I;j) I 1 . >"" , .;,: !;\ ::,; t:.. .:-: "i I ~ :;O:g .0 ." c~~~ g~ ~..:~~~~ , . . ~ 5 j " ~. ;;;;i;; '" i;... '" Ui _. ~ ::;,. c ~~~A""i~ S ~ i i a ~. ~ ~ ~ ~ I ,; 0; ~ ~ 5 ~ !~ ~ .. ~ ~ ~o::! !!i ~ a ~ Cl O''!l .. 0 ~ 0", '" ! ~ <: : ! ~ ~ .j "'-"' ~ ~ k j : i:; i:; '" "'a2 i ~ ~ ~ ~n ~- ~ ~ ~ ~ ~ ::: r'o: " "," n S" . ~ 0 c ;: ~ .~ !? ".= -., - ~ g g!:! (~ " . ;;;;;; f~ " :'J ~ '" ~; g ~ ~ ~ ~ ~ ~ ; " " o 0 o " 0 ~ !g o , , . ~ c ~ -~ " . . j ,I SOILS . " , 350 soil narre and map symbol 28C, 288-----~--- Chehu Iptirn ;;f 29--------------- Cloqua to 30*: Cloquato-------- Urban land. 31--------------- Coburg 32*: Coburg---------- Urban land. 33-----------~--- Conse r 34--"------------ Courtney 35Q, 35Fi 35G---- Cruiser 3.6D---~----'------ Cumley . I , I -! TABLE 13.--PHYSICAL AND CHEMICAL PROPERTIES OF SOiLS--Continued i M:ist --:e-rmea~l~AvailablT SOi)~ bulk .iLY I. water Lt:lieactlon dens i tv canaci tv 1 ~crn.j In/h~ In/in E!!' I 0.19-0.21 5.6-6.5 0.18-0.22 5.6-~.5 ---r 5.6-61.5 6.1-7.3 6.1-7.3 I TDep~r-c~a~ --I In 0-7 , 7-13' 13 0-14 14-50 50-'60 0-14 14-50 50-60 0-18 18-53 53-65 0-18 18-53 53-65 0-9 9-41 41-60 0-15 15-28 28-41 41-60 0-15 15-55 55-65 0-14 14-60 Pct 18-27 20-30 5-15 5-15 2-10 5-15 5-15 2-10 27-35 35-45 15-30 27..:..35 35-45 15-30 27 -35 35-50 15-30 27 -35 50-60 27-35 0-5 27-35 40-55 0-6 --- 6-32 --- 32-60 ~-- 3~~;~~~n___m__I. ~=i6 . i~=~g 116-4?1 40-50 45-60 40-60 39E, 39F------~-- 0-4 15-25 Digger 4-17 15-25 17-37 15-25 37 --- 37C, 37~~-------- Cupola 40H*: Digger---------- Rock outcrop. 41C, 41E, 41F---- D ixonv il1e 0-4 4-17 17-37 37 0-14 14-26 26 I 15-25 15-25 15-25 27 -4 0 40-60 See footnote at end of table. 1.30-1.40 1.30-1.40 1. 30-1. 40 1.30-1.40 1.30-.140[ 1.30-1.40 1. 30-1. 40 1.30-1.40 1. 20-1. 40 1.20-1:40 1.20-1.4-0 1. 20-1. 40 1.20-1.40 1. 20-1. 40 1. 20-1. 40 1.20-1.40 1. 20-1. 40 1. 30-1. 40 1.30-1.40 1.30-1.40 1.30-1.40 0.85-0.95 0.90-1.00 1.10-1.30 1. 20-1. 40- 1.30-1.40 0.85-0.95 1.20-1.40 "}". 40-1. 60 1.30-}.40 1.25-1.40 1. 25-1. 40 I 1.30-1.40 0.90-1.10 0.95-1.10 1.00-1.40 0.90-:-1.10 I 0.95-1.10 1.00-1.40 0.6-2.0 0.6-2.0 0.6-2.0 0.6-2.0 0.6-2.0 0.6-2.0 0.6-2.0 0.6-2.0 0.6-2.0 0.2-0.6 2.0-6.0 0.6.,..2.0 0.2-0.6 2.0-6.0 0.6-2.0 0.06-0.2 0.6-2.0 0.2-0.6 < 0 .06 0.2-0.6 6.0-20 0.6-2.0 0.6-2.0 0.6-2.0 0.6-2.0 0.2-0.6 0.6-2.0 0.6-2.0 0.2-0.6 0.6-2.0 0.6-2.0 <0.06 0.06-0.2 2. 0-6 . 0 2.0-6.0 2.0-6.0 2.0-6.0 2.0-6.0 2.0-6.0 0.6-2.0 0.06-0.2 0.20-0.22 0.19-0.21 0.08-0.10 0.20-0.22 0.19-0.21 0.08-0.10 0.18-0.20 0.18-0.20 0.13-0.15 . 0.18-0.20 0.18-0.20 0.13-0.15 0.19-0.21 0.14-0.16 0.16-0.18 0.16-0.19 0.11-0.14 0.07-0.13 0.03-0.05 0.20-0.25 0.17-0.20 0.10-0.16 0.18-0.20 0.14-0.16 0.17-0.26 0.10"0.13 0.05-0.08 0.18-0.25 0.18-0.22 0.03-0.05 0.05-0.10 0.10-0.14 0.10-0.12 0.10-0.12 0.10-0~14 0.10-0.12 0.10"--0.12 5.6-61.5 6.1-71.3 6.1-7!.3 i , I 5.6-6(5 6.1-71.3 6.6-71.3 5.6-ol5 6.1-71.3 6.6-71.3 1 I 1 5.6-6~s 6.1-6ts 6.1-7~3 I 5. 1-6 ~ 0 6.1-61.5 6.1-6! 5 6.1-71,3 I 1 ' 4.5-6.0 4.5-6!0 "4.s-6!0 I 5.1-6: 5 s.1-6!0 I 5.1-6.10 5.6-6 J 5 5.6-6!5 I 5.1-6.0 5.1-6.10 5.1-6.!s 6.1-713 - I 5.1 6.5 s.1-6lo 4.5-6.10 ---I 5.1-6.15 5.1-6.'0 4.5-6.10 --- ! I , , 5.6-6.15 5.6-6.15 ___ I I '1lEroSion Shrink-swell factors potential I K T i Low---------'- 9.28 2 Low---------- 0.28 Low---------- 0.32 5 Low------~--- 0.32 Low---------- 0.24 Low---------- 0.32 5 Low---------- 0.32 Low---------- 9.24 Moderate----- 0.32 5 Moderate----- 0.37 Low---------- 0.24 MOde~ate-----rO.32 Moderate~---- 0.37 Low---------- 0.24 I MOderate-----!0.371 5 High--------- 0.37 Low---------- 0.43 Moderate----- 0.20 2 High--------- 0.20 Moderate----- 0.17 Low-----~---- 0.10 Low---------- 0.17 "5 Low---------- 0.24 Low---------- 0.24 Moderate----- 0.24 5 High--------~ 0.24 Low---------- Low~----..:.---- Low....:--------- Low--...:------- Low---------- \8i9h--------- HiQh----.----- Low---------- Low---------- Low---------- 0.15 0.10 0.02 0.43 0.49 0.32 0.37 0.10 0.20 0.24 LOw----------IO.I0 Low---------- 0.20 Low---------- 0.241 --------"---~I--~-I Modera te----- H igh ------~-- /C----------"- I' 0.32 0,24 SDil Survey Organic matter Pct 3-5 5-10 5-10 4-6 5 4-6 4-8 3-5 4-6 4-6 3 4-8 5 ~-4 3 3-5 3 3-5 3 3-6 " Lane County Area. Oregon Soil name and map symbol 66D---------~---- Kinney 6 7F, 67G--------'- Kinney 68F, 68G--------- Kinney 69E-------------- Kinney 70E, 71F, 7IG., 72Ft 72G-------- Klickitat 73--------------- Linslaw 748, 74C, 74D, 74E-------~----- Lint 75--------------- r.1alabon ~76*' ". Malabon--------- Urh?o land. . . . TABLE 13.-~PHYSICAL AND CHEMICAL P~OPERTIES OF SOILs-~Continued -T- -- T---T~ --- Depth Clay Moist I Pet::~abili ty bulk h density In Pet G/cni" I~/hr -i-- Availablel Soil water. reaction ca aeit In/in l2!! 0-12 12-42 4.2-50 50 0-16 16 -50 50-58 '58 0-12 12-42 42-50 50 0-16 16-':50 50-59 59 0-13 13-39 39-50 50 0-16 16-42 42-56 56-60 0-16 16-69 0-12 12-42 42-60 0-12 12-42 42-60 77B-------------- 0-15 Marcola 15-60 78--------------- 0-14 McAlpin 14-60 79--------------- 0-24 McBee 24-41 41-62 80e, 80G-----c--c I O"il McCully 1"~;55 810, 81F, 81G---- 0-14 McDuff 14-37 37 18-27 22-30 15-27 18-27 22-30 15-27 18-27 22-30 15-27 - 18-27 22-30 15-27 20-27 27-33 20-27 15-25 35-45 50-55 10-25 27-35 35-45 20-35 27-35 35-45 20-35 27 - 35 40-50 30-40 40-50 27-35 25-35 25-45 30-...:.40 45-55 27-35 40-60 82C-------------- 0-8 Meda B-40 40-60 I See footnote at e~d of table. 20-25 27-35 3-15 0.85-0.95 0.90-:1.20 0.90-1.20 0.Bs-0.95 0.90-1. 20 0.90-1.20 0.B5-0.95 0.90.,...1.20 0.90-1.20 0.85-0.95 0.90-1.~01 0.90-1..20 1.20-1.40 1.20-1.40 1.20-1.40 1.20-1.40 1. 20-1. 40 1. 20-1. 40 1.20-1.40 0.50-0.85 0.50-0.85 1.20-i.40 1. 20-1. 40 1.20-1.40 1.20-1.40 1. 20-1.40 1.20-1.40 1.30-1.40 1.30-1.50 1.20-1.40 1.20-1.40 1.20-1.40 1.20-1.40 1. 20-1. 40 1.20...:.1.30 1.?0-1.30 0.95-1.10 0.95-1.10 1.30-1.35 1.30-1.35 1. 25-1. 30 0.~-2.0 0.6-2.0 0.6-2.0 0.6-2.0 0.6-2.0 0.6.-2.0 0.6-2.0 0.6-2.0 0.6-2.0 0.6-2.0 0.6-2.0 0.6-2.0 0.6-2.0 0.6-2.0 0.6.-2.0 - 0.6-2.0 0'.06-0.2 0.06-0.2 0.6-2.0 2.0-6.0 0.6-2.0 0.6-2.0 0.2-0.6 0.6.-2.0 0.6-2.0 0.2-0.6 0.6-2.0 0.6-2.0 0.06-0.2 0.6-2.0 0.2-0.6 0.6-2.0 0.6-2.0 0.6-2.0 0.6-2;0 0.2-0.6 0.6-2.0 0.2-0.6 0.6-2.0 0.6-2.0 6.0-20.0 0.16-0.22 5.1-6.5 0.15-0.20 4.5"':'5.5 0.13-0.20 3.6-5.5 0.16-0.22 0.15-0.20 0.13-0.20 5.1-6.5 4.5-5.5 3.6-5.5 0.16-0.22 5.1-6.5 0.15-0.20 4.5-5.5 0~13-0.20 3.6-5.5 ---,- 0.16-0.22 5.1-6.5 0.15-0.20 4.5-5.5 0.13-0.20 3.6-5.5 0.08~0.10 4.5-6.0 0.06-0.10 4.5-5.5 0.05-0.08 4.~-5..S O.16-P.18IS.1-6.0 0.16-0.20 4.5-5.5 0.10-0.18 4.5-6.0 0.10-0.16 5.6-6.0 0.23-0.50 5.1-5.5 0.22-0.48 5.1-5.5 0.18-0.20 5.6-6.0 0.18-0.20 6.1-7.3 0~18-0:20 6.1-7.3 0.18-0.20 5.6-6.0 0.18-0.20 6.1-7.3 d.16~0.20 6.1-7.3 0.14-0.+8 5.6-6.5 0.12-0.16 6.1-7.3 0.19-0.21 5.1-6.0 0.15-0.17 5.1~6.0 0.19-0.21 5.6-6.5 0.19-0.21 5.6-7.3 0.13-0.21 6.1-7.3 0;17-0.21 '5.1-5.5 0.14-0.16 4.5-5.0 0.1:~:.2114.:~:.5 0.11-0.13 3.6-5.0 0.14-0.17 5.6-6.0 0.08-0.14 5.6-6.0 0.07-0.10 5.6-6.0 353 -------~rosionT----,------ Shrink-swell factors Organic potential ~~-- m:::.r Low---------- 0.10 I 4 4-8 Low---------- 0.17 Low---------- 0.32 ILow---------- 0.10 :Low--------.-- 0.17 ,Low---------- 0.32 I'LOW------n-- Low---------- Low--------:-- ------------- , I'LOW-----n-n Low---------- Low---------- i------------- ;. I ILOW---------- Low---------- Low---------.:.... , 1---------'----- 1 ILow---------- Moderate----- tModerate----- jLow---------- 1 fLow---------- .Low---------- i Moderate----- 'Moderate----- 'Moderate----- I I Moderate----- Moderate-'---- Moderate-----:- I I i Moderate----- .H igh --------- i Moderate----- . .High--------- I Moderate----- MOderate----- Moderate----- I [.ow~--------- MOderate--,-- 1------------- Madera te----- MOderate----:- , 1------------- I Low---------- 1.ow---------- 1.ow---------- , 0.10 4 ~ 0.17 0.32 0.10 4 0.17\ 0.32 I 0.10 I 3 0.-15 0.10 0.28 5 0.32 0:32 0.28 0.3-7 5 0.49 0.15 5 0.28 0.32 O~15 5 0.28 0.32 0.20 5 0..20 0.24 5 0.28 0.28 5 0.28 0.28 0.17 4 0.20 :~::I 3 0.28 0.32 5 0.24 0.20 4 4-8 4-8 4-8 3-6 2-4 10-15 4-6 4:....6 4-6 3-6 4-6' 7-12 4...:.6 1-3 . " 360 c . o ~ '" . . " I~ ~ ): ~~ I~I ~~ II:c ! ~ ~ 0 co.,; .,,~ ..w~ {) o . " '" o o " '" . '" . . . o '" " . '" ~ ~ " . co '" . 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" "'. , u , U m", 0'" ~ " N" '" M" ~,,", ~'"' ~~ O~ M", ~~ ~" ~" " ~" 00" m" "' ~ ~ ~ w ~ w ~ ~ ~ ~ ~' ~ '~ ~ ~ I it 363 . ~ "' . +' ~ o '0 " . +' . . +' o " +' o o ~ . . en . I -I" . ' i I HYDROLOGIC CALCULATIONS i FOR REtENTION SYSTEM SiZING Santa Barbara Urban Hydrograph Method Spreadsheets & Supporting Documentation i I ,. .' . . 1 I EAST CONGREGATION OF JEHOVAH'S WITNESSES DEVELOPED CONDITION (2-year wi No infiltration) Rain Garden IFull Buildout , design area 5095 sf: total area = 75,900 1.74 (acres) deSi d th~ !.I5 f1 ; pervious area = 20000 0.46 impervious area = 55,900 1.28 Total storage per area & depth hsted = 5859 cf j S - 1.6279 O.2S - 0.3256 1 5831 cf Pervious CN,- 86 Peak Req'd Stora2e = 1m ervious eN = 98 S ~ 0.2041 0.2S ~ 0.0408 I . Peak Desifll flowrate = 0.55 cfs toial depth rain I Pt~ 3.3 (inches) MeasUred permeability rate = * inihr no infiltration used to calc dt~ 10 (min) Design Soil Permcality Rate - 0.00 in/hr storage requirement .. 0.00 efsl Tc= 10 (min) ~ 0.33333 percolation rate = , File No: 3820 D2-yr.qpw ^ bypass rate = 0.00 cfSI no pre-developed fate used .1 03-16-09, MJK max outflow rate = 0.00 cfSI 24-HoUr SCS TypelA Design Storm - 2 Year PERVIOUS IMPERVIOUS - Incremental Cumulative Rainfall incre. Rainfall Accum. .Accum. Increm. Accum. !nerem. Total Design Req'd Stor'g Req'd Stor'g Time distr. Rainfall Increment Rainfall Runoff Runoff Runoff Runoff Runoff flowrate Vol In - pei-c VolIn - perc min distr. . inches ' inches inches inches inches inches inches cfs c c 0 0 .0 0 0 0 0 0 0 0 0 0 0 0 10 0.40% OAO% 0.013 0.013 0.000 0.000 0.000 0.000 0.000 0.00 0.00 0.00 0 20 0.40% 0.80% 0.013 0.026 0.000 0.000 0.000 0.000 0.000 0.00 0.00 0.00 0 30 0.40% 1:20% 0.013 0.040 0.000 0.000 0.000 0.000 0.000 0.00 0.00 0.00 0 40 0.40% 1.60% 0.013 0.053 0.600 0.000 0.001 0.001 0.000 0.01 0.00 1.03 I. 50 0.40% 2.00% 0.013 0.066 0.000 0.000 0.003 0.002 0.002 0.02 0.01 3.26 4 60 0.40% 2.40% 0.013 0.079 0.000' 0.000 0.006 0.003 0.002 0,03 0.01 5.14 9 70 0.40% 2.80% 0.013 0.092 0.000 0.000 '0.010 0:004 0.003 1 0.03 0.01 6.73 16 i 80 0040% 3.20% 0.013 0.106 0.000 0.000 0.016 0.005 0.004 I. 0.04 0.01 8.08 24 90 0040% 3.60% 0.013 0.119 0.000 0.000 0.022 0.006 0.004 0.05 0.02 9.24 33 100 0040% 4.00% 0.0]3 0.132 0.000 0,000 0.028 0.007 0.005 0.05' 0.02 10.25 44 110 0.50% 4.50% 0.017 0.149 0.000 0.000 0.037 0.009 .0.007 om 0.02 14.03 58 120 0.50% 5.00% 0.017 0.165 0.000 0.000 0.047 . 0.010 0.007 0.08 0.03 15,19 73 . 0.000 e 0.008 130 0.50% 5.50% 0.017 0.182' 0.000 0.057 0.010 0.08 0.03 16.19 89 140 0.50%1 6.00% 0.017 0.198 0.000 0.000 0.068 0.01 ] 0.008 0.09 0.03 17,05 106 ]50 0.50% 6.50% 0.017 0.215 0.000 0.000 0.080 0.011 0.008 0.09 0.03 17.80 124 160 0.50% 7.00% 0.017 0.231 0.000 0.000 0.092 0.012 0.009 0.09 0.03. 18.46 142 170 0.60% 7.60% 0.020 0.251 0.000 0.000 0.106 0.D15 0.011 '0..11 . 0.04 22.90 165 180 0.60% 8.20% 0.020 0.271 0.000 0.060 0.122 0.015 0.011 I 0.12 0.04 23.62 189 ]90 0.60% 8.80% 0.020 0.290 0.000 0.000 0.137 .0.016 0.011 , 0.12 0.04 24.24 213 200 0.60% 9.40% 0.020 0.310 0.000 0.000 0.153 0.016 0.012 0.12 0.04 24.78 238 210 0.60% 10,00% _ 0.020 0.330 0.000 0.000 0.170 0.016 0.012 0.13 0.04 25.27 263 220 0.60% iO.60% 0.020 0.350 0.000 0.000. 0.186 0.017 0.0]2 0.13 0.04 25.88 289 230 0.70% 11.30% 0.023 0.373 0.001 0.001 0.206 0.020 _ 0.015 0.15 0.05 30.98 320 240 0.70% 12.00% 0.023 0.396 0.003 0.002 0.226 0.020 0.015 0.16 '0.05 31.77 352 250 0.70% 12.70% 0.023 0.419 0.005 0.002 0.246 0.020 0.0]5 0.16 0.05 '32.48 384 260 0.70% 13.40% 0.023 0.442 0.008 0.003 0.266 0.020 0.016 0.17 0,06 33:14 418 . 270 0.70% 14.10% 0.023 0.465 0.011 0.003 0.287 0.021 0.016 0.17 0.06 33.75 451 280 0.70% 14.80% 0.023 0.488 0.D15 0.004 0.307 0.021 0.016 0.17 0.06 34.31 486 290 0.8'1% 15.62% 0,027' 0.515' 0.020 0:005 0.332 0.Q25 0.019 0.20 0.07 40:86 526 300 0.82% . 16.44% 0.027 0.543 0.026 0.006 0.357 0.025 0.020' 0.21 0.07 41.52 568 310 0.82% 17.26% 0.027 0.570 0.032 0.006 0.382 0.025 0.020 0.21 om '42.13 610 320 0.82% 18.08% 0.027 0.597 0.039 0.007 0,407 0.025 0.020 0.21 0.07 42.70 653 0.025 , 696 330 0.82% 18.90% 0.027 0.624 0.046 0.007 0.432 0.021 I 0.22 0.07 43.23 340 0.82% 19.72% 0.027 0.651 0.054 0.008 0.457 0.025 0.021 I 0.07 43.73 740' I 0.22 350 0.95% 20.67% 0.031 0.682 0.064 0.0'10 0.486 0.029 0.024 , 0.26 0.09 51.24 791 360 0.95% 21.62% 0.031 0.713 Om5 0.011 0.516 0.030 0.025 , 0.26 0.09 51.82 843 370 0.95% 22.57% '0.031 0.745 0.086 0.011 0.546 0.030 0.025 , 0.26 0.09 52.36 895 380 0.95% 23.52% 0.031 0.776 0.098 0.012 0.576 0.030 0.025 1)0.26. 0.09 52.87 948 390 0.95% 24.47% 0.031 0.808 0.110 0.012 0.606 0.030 0.025 . 0.27 0.09 53.35 1001 400 0.95% 25.42% 0.031 0.839 0,123 0.013 0.636 0.030 0,026 '0.27 0.09 53.80 1055 410 1.34% 26.76% -0.044 0.883 0,142 0.019 0.678 0.042 0.036 I 0.38 0.13 . 76.59 1132 420 1.34% 28.10% 0.044 0.927 0.162 0.020 0.72] 0.043 0.037 10.39 0.13 77.36 1209 430 1.34% 29.44% 0.044 0.972 0.183 0.021 0.763 0.043 0.037 ; 0.39 0.13 78.08 1287 . . . , 24-HimT SCS Type IA Design Storm - 2 yea,- I' Iricremental Cumulative Rainfall mere. Rainfull Accum. Design Req'd SIoT'g Req'd SIoT'g Time dim. Rainfall Increment Rainfall flowrate Vol In - perc Vol In - perc -rom distr. inches inches cfs c 440 1.80% 31.24% 0.059 1.031 0.213 0.030 0.821 0.058 0.050 0.53 0.18 105.92 1393 450 1.80% 33.04% 0.059 1.090 0.244 0.031 0.879 0.058 0.051 0.54 0.18 107.00 1500 460 3.40% 36.44% 0.112 1.203 0.307 0.063 0.988 0.109 0.097 1.02 0.34 204.75 1705 470 5,40% 41.84% 0,178 1.381 0.415 0.108 1.163 0.175 0.157 1.66 0;55 331.20 2036 480 2.70% 44.54% 0,089 1.470 0.472 0.057 1.250 0.088 0.080 0.84 0.28 167.93 2204 490 1.80% 46.34% 0.059 1529 0.512 0.039 1.309 0.059 0.053 0.56 0.19 112.10 2317 500 1.34% . 47.68% 0.044 1573 0.541 0.030 1.353 0.044 0.040 0.42 0.14 84.26 2401 510 1.34% 49.02% 0.044 1.618 0.572 0.030 1.396 0.044 0.040 0.42 0.14 .84.55 2486 520 1.34% 50.36% 0.044 1.662 0.602 0.031 1.440 0.044 0.040 0.42 0.14 84.83 2570 530 0.88% 51.24% 0.029 1.691 0.623 0.020 1.468 0.029 0.026 0.28 0.09 55.85 2626 540 0.88% 52.iZ% 0.029 1.720 0.643 0.021 .1.497 0.029 0.027 0.28 0.09 55.96 2682 550 0.88% 53.00% 0.029 1.749 0.664 0.021 1.526 0.029 0.027 I 0.28 0.09 56,07 2738 560 0.88% 53.88% 0.029 1.778 0.685 0.021 1555 0.029 0.027 0.28 0.09 56.17 2794 570 0.88% 54.76% 0,029 1.807 0.706 0.021 1583 0.029 0.027 0.28 0.09 56.27 2851 580 0.88% 55.64% 0.029 1.836 0.727 0.021 1.612 0.029 0.027 0.28 0.09 56.37 2907 590 0.88% 56.52% . 0.029 1.865 0.748 0.021 1.641 0.029 0.027 0.28 0.09 56.46 2964 600 0.88% 57.40% 0.029 1.894 0.770 0.021 1.670 0.029 0.027 0.28 0.09 56.55 3020 610 0.88% 58.28% 0.029 1.923 0.791 0.022 1.698 0.029 0.027 0.28 0.09 56.64 3077 620 0.88% 59.16% 0.029 1.952 '0.813 0.022 1.727 0.029 '0.027 0.28 0.Q9 56.73 3133 630 0.88% 60.04% 0.029 1.981 0.835 0.022 1.756 0,029 0.027 0.28 0.09 56.81 3190 640 0.88% 60.92% 0.029 2.010 0.857 0.022 1.785 0.029 0.027 0.28 0.09 56.89 3247 650 0.72% 61.64% 0.024 2.034 0.875 om8 1.808 0.024 .0.022 0.23 0.08 46.61 3294 660 0.72% 62.36% 0.024 2.058 0.893 0.018 1.832 0.024 0.022 0.23 0.08 46.66 3340 670 0.72% 63.08% 0.024 2.082 0.911 0.018 .1.855 0.024 0.022 0.23 0.08 46.71 3387 680 0.72% 63.80% 0.024 2.105 0.930 Om8 1.879 0.024 0.022 0.23 0.08 46.76 3434 690 0.72% 64.52% 0.024 '2.129 0.948 0.018 1.902 0.024 0.022 0.23 0.08 46.81 3481 700 0.72% . 65.24% 0.024 2.153 0.966 om8 1.926 0.024 0.022 0.23 0.08 46.85 3528 710 0.72% 65.96% 0.024 2.177 0.985 0.019 1.950 0.024 0.022 0.23 0.08 46.90 3574 720 0.72% 66.68% 0.024 2.200 1.004 0.019 1.973 0.024 0.022 0.23 0.08 46.95 3621 730 0.72% "67.40% 0.024 2.224 1.022 0.019 1.997 0.024 0.022 0.23 0.08 46.99 3668 740 0.72% 68.12% 0.024 2.248 1.041 0.019 2.020 0.024 0.022 0.24 0.08 47.03 3715 750 0.72% 68.84% 0.024 2.272 1.060 0.019 2.044 0.024 0.022 0.24 0.08 47.08 3762 760 0.72% 69.56% 0.024 2.295 1.079 0.019 2.068 0.024 0.022 0.24 0.08 . 47.12 3810 770 0.57% 70.13% 0.019 2.314 1.094 0.015 2.086 0.019 0.018 I 0.19 0.06 37.33 3847 780 0.57% 70.70% 0.019 2.333 1.109 .0.015 2.105 0.019 0.018 ., 0.19 0.06 "37.35 3884 I 790 0.57% 71.27% 0.019 2.352 1,124 .9,015 .2.124 0.019 om8 0.19 0.06 37.38 3922 '800 ' 0.57% 71.84% 0.Q19 2.371 ([39 0.015 2.142 0.019 0.018 0.19 0.06 37.40 3959 810 0.57% .72.41% 'O:C)J9' . 2.390 1.154 om5 2.161 0.019 0.018 0.19 0.06 37.43 3997 820 0.57% 72.98% 0.019 2.408 1.169 0.015 2.180 0.019 om 8 , 0.19 0.06 37.45 4034 830 0.57% 73.55% 0.019 2.427 1.184 0.015 2.198 0.019 0.018 0.19 0.06 37.47 4071 840 0.57% 74~12% 0.019 2.446 1.199 0.0l5 2.217 0.019 0.018 0.19 0.06 .37:50 4109 850 0.57% 74.69% 0.019 2.465 1.215 0.015 2.236 0.019 0.018 0.19 0.06 37.52 4146 860 0.57% 75.26% 0.019 2.484 1.230 0.015 2.254 0.019 0.018 I 0.19 0.06 37.54 4184 0.57% 75.83% 0.019 2502 0.015 2.273 0.019 0.018 . I 0.19 0.06 37.56 4222 870 1.245 I '880 0.57% 76.40% 0.019 2.521 i.261 0.0l5 2.292 0,019 0.018 0.19 0.06 37.58 4259 890 0.50% 76.90% 0.017 2.538 1.274 0.014 2.308 0.016 0.016 0.16 0,05 32.99 4292 900 0.50% 77.40% 0.017 2.554 1.288 0.014 . 2.325 0.016 0.016' 0.17 0.06 33.00 4325 910 0.50% 77.90% 0.017 2.571 1.301 0.014 2.341 0.016 0.016 0.17 0.06 33.02 4358 920 0.50% 78.40% 0.017 . 2587 . 1.315 0.014 2.357 0.016 0.016 0.17 0.06 33.03 4391 930 0.50% 78.90% 0.017 2.604 1.329 0.014 2.374 0.016 0.016 0.17 0.06 33.05 4424 940 0.50% 79.40% 0.017 2.620 1.342 0.014 2.390 0.016 0.016 I 0.17 0.06 33.06 4457 950 0.50% 79.90% 0.017 2.637 1.356 0.014 2.407 0.016 0.016 0.17 0.06 33.08 4490 960 0.50% 80.40% 0.017 2.653 1.370 0.014 2.423 0.016 0.0]6 0.17 0.06 33.09 4523 970 0.50% 80.90% 0.017 2.670 i.383 0.014 2.440 0.016 0.016 , 0.17 0.06 33.1 1 4557 980 0.50% 81.40% 0.017 2.686 1.397 0.014 2.456. 0.016 0.016 O.l? 0.06 33.12 4590 990 0.50% 81.90% 0.017 2.703 1.411 0.014 2.472 0.016 0.0]6 0.17 0.06 33.14 4623 1000 0.50% 82.40% 0.017 2.719 1.425 0.014 2.489 0.016 0.016 0.17 0.06 33.15 4656 1010 0.40% 82.80% 0.013 2.732 1.436 0.011 2.502 0.013 0.013 0.13 0.04 2653 4682 1020 0.40% 83.20% 0.013 2.746 1.447 0.011 2.515 0.013 0.013 0.13 0.04 26.54 4709 1030 0.40% 83.60% 0.013 2.759 1.458 0.01l 2.528 0.013 0.013 0.13 0.04 26.55 4736 HMO 0.40% 84.00% 0.013 2.772 ' 1.469 0.011 2.541 0,013 0.013 0.13 0.04 26.56 4762 1050 0.40% 84.40% 0.013 2. 785 1.480 0.011 2.554 0,013 0.013 0.13 0.04 26.56 4789 I "- .' . . I 24-Hour SCS Type lA Desigil Storm - 2 Year incremental Cmnulative Rainfall mere. Rainfall Accum. Design Req'd Stor'g Req'd Stor'g Time distr. Rainfall Increment Rainfall flowrate Vol In - perc Vol m- perc . mm distr. mches inches cfs c 1060 0.400/0 84.80% 0.013 2.798 1.491 0.011 2.568 0.013 0.013 0.13 0.04 26.57 4815 1070 0.40% 85.20% 0.013 2.812 1.502 0.011 2.581 0.013 0.013 0.13 0.04 26.58 4842 1080 0.40% 85.60% 0.013 2.825 1.513 0.011 2.594 0.013 0.013 0.13 0.04 26.59 4868 1090 0.40% 86.00% 0.013 2.838 1.525 0.011 2.607 0.013 0.013 0.13 0.04 26.60 4895 1100 0.40% 86.40% 0.013 2.851 1.536 0.011 2.620 0.013 0.013 0.13 0.04 26.61 4922 1110 0.40% 86.80% 0.013 2.864 1.547 0.011 2.633 0.013 0.013 0.13 0.04 26,61 4948 1120 0.40% 87.20% 0.013 L878 1.558 0.011 2.646 0.013 0.013 0.13 0.04 26.62 4975 1130 0.40% 87.60% 0.013 . 2.891 1.569 O.(lll 2.660 0.013 0.013 0.13 0.04 26.63 5002 1140 0.40% 88.00% 0.013 2.904 1.581 0.011 2.673 0.013 0.013 0.13 0.04 26.64 5028 1150 0.40% 88.40% 9.013 2.917 1.592 0.011 2.686 0.013 0.013 0.13 0.04 26.64 5055 1160 0.40% 88.80% 0.013 2.930 1.603 0.011 2.699 0.013 0.013 0.13 0.04 26.65 5081 1170 0.40% 89.20% 0.013 2.944 1.614 0.011 2.712 0.013 0.013 0.13 0.04 26.66 5108' 1180 0.40% 89.60% 0.013 2.957 1.626 0.011 2.725 0.013 0.013 0.13 0.04 26.67 5135 1190 0.40% 90.00% 0.013 2.970 1.637 0.011 2.738 0.013 0.013 0.13 0.04 26.67 5161 1200 0.40% 90.40% 0.013 2.983 1.648 0.011 2.752 0.013 0.013 0.13 0.04 26.68 5188 1210 0.40% 90.80% 0.013 2.996 1.659 0.011 2.765 0.013 0.013 0.13 0.04 26.69 5215 1220 0.40% 91.20% . 0.013 3.010 1.671 0.011 2.778 0.013 0.013 0.13 0.04 26.70 5242 1230 0.40% 91.60% 0.013 3.023 1.682 0.011 2.791 0.013 0.013 0.13 0.04 26.70 5268 i 1240 0.40% 92.00% 0.013 3.036 1.693 0.011 2.804 0.013 0.013 , 0.13 0.04 26.71 5295 I 1250 0.40% 92.40% 0.013 3.049 1.705 0.011 2.817 0.013 0.013 I 0.13 0.04 26.72 5322 1260 0.40% 92.80% 0.013 3.062 1.716 0.011 2.830 0.013 0.013 I 0.13 0.04 26.72 5348 1270 0.40% 93.20% 0.013 3.076 1.727 0.011 2.844 0.013 0.013 , 0.13 0.04 26.73 5375 1280 0.40% 93.60% 0.013 3.089 . 1.739 0.011 2.857 0.013 0.013 I 0.13 0.04 26.74 5402 1290 0.40% 94.00% 0.013 3.102 . 1.750 0.011 2.870 0.013 0.013 , '0.13 0.04 26.74 5429 1300 0.40% 94.40% 0.013 3.115 1.762 0.011 2.883 0.013 0.013 I 0.13 0,04 26.75 5455 1310 0.40% 94.80% 0.013 3.128 1.773 0.011 2.896 0.013 0.013 , 0.13 0.04 26.76 5482 1320 0.40% 95.20% 0.013 3.142 1.784 0.011 . 2.909 0.013 0.013 I 0.13 0.04 26.76 5509 1330 0.40% 95.60% 0.013. 3.155 1.796 0.011 2.922 0.013 0.013 I 0.13 0.04 26.77 5536 1340 0.40% 96.00% 0.013 3.168 1.807 0.011 2.936 0.013 0.013 I 0.13 0.04 26.78 5562 1350 0:40% 96.40% 0.013 3.181 1.819 0.011 2.949 0.013 0.013 0.13 0.04 26.78 5589 1360 O.~O% 96.80% 0.013 3.194 '1.830 0.011 2.962 0.013 0.013 0.13 0.04 . 26.79 5616 1370 0.40% 97.20% 0.013 3.208 1.842 0.011 2.975 0.013 0.013 0.i3 0.04 26.80 5643 1380 0.40% 97.60% 0.013 3.221 1.853 0.011 2.988 0.013 . 0.013 0.13 0.04 26.80 5670 1390 0.40% 98.00% 0.013 3.234 1.865 0.011 3.001 0.013 10.013 0.13 0.04 26.81 5696 1400, 0.40% 98.40% 0.013 3.247 1.876 0.012 3.015 0.013 0.013 0.13 . 0.04 26.81 5723 1410 0.40% 98.80% 0.013 3.260 . 1.888 0.012 3.028 0.013 0.013 0.13 0.04 26.82 5750 1420 0.40% 99.20% 0.013 3.274 1.899 0.012 3.041 0.013 0.013 0.13 0.04 26.83 . 5777 1430 0.40% 99.60% 0.013 3.287 1.911 0.012 3.054 0.013 0.013 0.13 0.04 26.83 5804 1440 0.40% 100.0% 0.013 3.300 1.922 0.012 3.067 0.013 0.013 0.13 0.04 26.84 5831 . . . .' . I i EAST CONGREGATION OF JEHOV Ali'S WITNESSES DEVELOPED CONDITION (2-year wi Infiltration Rdin Garden I Full Buildout bottom width = 48.5 ft bottom lim h~ 93.5 ft total area = 75,900 1.74 (acres) bottom area (infiltration :area) = 4535 sf pervious area = 20000 0.46 , , impervious area = 55,900 1.28 Peak Req'd Stdra2;C = 3270 ef Pervious CN = 86 S - 1.6279 O.2S ~ 0.3256 Peak Des~n noJra.te = 0.55 efs 1m ervious CN ~ 98 S ~ 0.2041 O.2S ~ 0.0408 drawdown ltime = 29 hr toial depth rain I Pt~ . 3.3 (inches) SCS miiiimum oermeabilitv rate = 0.60 inlhr dt~ 10 (miD) . Design Soil Permeality Rate- 0.3000 inlhr scs min/2 Te~ 10 (miD) woo 0.33333 percolation rate = 0.0315 efsl using bottom area only File No: 3820 D2i-yr.qpw bypass rate = 0.0000 efsl no pre-developoo rate used 03-16-09, MJK Max outflow rate == 0.03153fs 24-Hour SCS Type lADesign Storm - 2 Year PERVJOUS IMPERVIOUS Incremental Climulative Rainfali mere. Rainfall Accum. Accwn. Increm. Accum. loci-em. Req'd Stor'g Req'd Stilr'g Time - distr. Rainfall Increment Rainfall Runoff Runoff Runoff Runoff Vol In - pere VolIn. pere mm distr. inches inches inches inches inches inches e e 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10 0.40% 0.40% 0.013 0.013 0.000 0.000 0.000 0.000 0.000 0.00 0.00 0.00 0 20 0.40% 0.80% 0.013 0,026 0.000 0.000 0.000 0.000 0.000 0.00 0.00 0.00 0 30 0.40% 1.20% 0.013 0.040 0.000 0.000 0.000 0.000 0.000 0.00 0.00 0.00 0 40 0.40% 1,60% 0.013 0.053 0.000 0.000 0.001 0.001 0.000 0.01 0.00 0.00 0 50 0.40% 2,00% 0.013 0.066 0.000 0.000 0.003 0.002 0.002 0.02 0.01 0.00 0 60 0:40% 2:40% 0.013 0.079 0.000 0.000 0.006 0.003 0.002 0.03 om 0.00 0 70 0.40% 2.8-0% 0.013 0.092 0.000 0.000 0.010 0.004 0.003 0.03 0.01 0.00 0 80 0.40% 3.20% 0.013 0.106 0.000 0.000 0.016 0.005 0,004 0.04 0.01 0.00 0 90 .0.40% 3.60% 0.013 0.119 0.000 0.000 0.022 0.006 0.004 0.05 0.02 0.00 0 100 0.40% 4.00% 0.013 0.132 0.000 0.000 0.028 0.007 0.005 0.05 0.02 0.00 0 110 0.50% 4.50% 0.017 0.149 0.000 0.000 0.037 0.009 0.007 ! 0.07 0.02 0.00 0 120 0.50% ' 5.00% 0.017 0.165 0.000 0.000 0.047 0.010 0.007 0.08 0.03 0.00 . 0 130 0.50% 5.50% 0.017 0.182 0.000 0.000 0.057 0.010 0.008 I 0.08 0.03 0.00 0 140 0:50% 6.00% 0.017 0.198 0,000 0.000 0.068 0,01 1 0.008 '; 0.09 0.03 0.00 '0 150 0.50% 6.50% 0.017 0.215 0.000 0.000 0.080 0.01] . 0.008 i 0.09 0.03 0.00 0 160 0.50% 7.00% 0.017 0.231 0.000 6.000 0.092 0:012 0.009 0.09 0.03 0.00 0 170 0.60% 7.60% 0.020 0.251 0.000 0.000 0.106 0.015 0.01l 0.11 0.04 4.01 4 180 0.60% ..8.20% 0.020 0.27] 0.000 0.000 0.122 0.015 0.01l 0.12 0.04 .4.72 9 190 0.60% ~.80% 0,020 0.290 0.000 0.000 0.07 0.016 0.01 1 ! 0.12 0.04 5.34 14 200 0.60% .9.40% 0.020 . 0.310 0.000 0.000 .0.153 0.016 0.012 ! 0:12 0.04 5.89 . 20' 210 0,60% 10:00% 0.020 0.330 0.000 0.000 0.170 0.016 0.012 ' 0.13 0.04 6.37 26 0.000 0.186 , 0.04 6.98 220 0.60% 10.60% 0.020 0.350 0.000 0.017 0.012 I 0.13 33 230 0.70% 11.30% 0,023 0.373 0.001 0.001 0.206 0.020 0.0]5 . . 0.15 0.05 12.09 45 240 0.70% 12.00% 0.023 0.396.. 0.003 0.002 0.226 0.020 0.015 ~ 0.16 0.05 12.87 58 250 0.70% 12.70% 0.023 0.419 0.005 0.002 0.246 . 0.020 0.015 1 0:16 0.05 13.59 72 260 0.70% 13.40% 0,023 0.442 0.008 0.003 0.266 0.020 0.016 ! 0.17 0.06 14.25 86 , 270 0.70% 14.10% 0.023 0.465 0.01l 0.003 0.287 0.021 0.016 I 0.17 0.06 .14.85 . lor 0.488 0.015 0.004 0.307 0.021 0.016 I 15.42 116 280 0.70% 14.80% 0.023 I 0.17 0.06 290 0.82% 15.62% 0.027 0.515 0.020 0.005 0.332 0.025 0.019 , 0.20 0.07 21.96 138 300 0.82% 16.44% 0.027 0.543 0.026 0.006 0.357 0.025 0.020 I 0.07 22.62 161 ,0.21 310 0.82% 17.26% 0.027 0.570 0.032 0.006 0.382 0.025 0.020 10.21 0.07 23.24 184 320 0.82% ]8.08% . 0.027 0.597 . 0.039 0.007 0.407 0.025 0.020 10.21 0.07 23.81 208 330 0.82% 18.90% 0.027 0.624 0.046 0.007 0.432 0.025 0.021 I 0.22 0.07 24.34 232 340 0.82% 19.72% 0.027 0.65] 0.054 0.008 0.457 0.025 0.02] '0.22 0.07 24.83 257 350 0.95% 20.67% 0.031 0.682 0.064 0.010 0.486 0.029 0.024 i 0.26 0.09 32.35 290 360 0.95% 21.62% 0.031 0.713 0.075 0.011 0.516 0.030 0.025 ,0.26 0.09 32.93 322 370 0.95% 22.57% 0.031 0.745 0.086 0.011 0.546 0.030 0.025 i 0.26 0.09 33.47 356 380 0.95% 23.52% 0.03] 0.776 0.098 0.012 0.576 0.030 0.025 [ 0.26 0.09 33.98 390 390 0.95% 24.47% 0.031 0.808 0.110 0.012 . 0.606 0.030 0.025 i 0.27 0.09 34.45 424 400 0.95% -25.42% 0.031 0.839 0.123 0.0!3 0.636 0.030 . 0.026 10.27 0.09 34.90 459 410 1.34% 26.76% 0.044 0.883 0.142 0.019 0.678 0.042 0.036 :0.38 0.13 57.70 5]7 420 1.34% 28.10% 0.044 0.927 0.162 0.020 0.721 0.043 0.037 ,0.39 0.13 58.47 575 430 1.34% 29.44% 0.044 0.972 0.183 0.021 0.763 0.043 0.037 '0.39 0.13 59.18 635 . .! 24-Hour SCS Type lA Design Storm - 2 Year I Incremental Cilln'tilative Rainfall Inere. Rainfall Accum. Req'd Stor'g Req'd Stor'g Time distr. Rainfall Increment Rainfall Vol In - perc Vol In - pere min distr. inches inches 440 1.80% 31.24% 0.059 1.031 0.213 0.030 0.821 0.058 0.050 053 0.18 87.02 722 450 1.80% 33.04% 0.059 1.090 0.244 0.031 0.879 0.058 0.051 054 0.18 88.-11 810 460 3.40% 36.44% 0.112 1.203 0.307 0.063 0.988 0.109 0.097 1.02 0.34 185.86 996 470 5.40% 41.84% 0.178 1.381 0.415 0.108 1.163 0.175 0.157 1.66 0.55 312.31 1308 480 2.70% 44.54% 0.089 1.470 0.472 0.057 1.250 0.088 0.080 0.84 0.28 149.04 1457 490 1.80% 46.34% 0.059 1.529 0512 0.039 1.309 0.059 0.-053 056 0.19 93.81 1551 500 1.34% 47.68% 0.044 1.573 0541 0.030 1.353 0.044 0.040 , 0.42 0.14 65.37 1616 510 1.34% 49.02% 0.044 1.618 0572 0.030 1.396 0.044 0.040 0.42 0.14 65.66 1682 520 1.34% 50.36% 0.044 1.662 0.602 0.031 1.440 0.044 0.040 ! 0.42 0.14 65.93 1748 530 0.88% 51.24% 0.029 1.691 0.623 0.020 1.468 0.029 0.026 i c. 0.28 0.09 36.96 1785 , 540 0.88% 52.12% 0.029 1.720 0.643 0.021 1.497 0.029 0.027 ! 0.28 0.09 37.07 1822 550 0.88% 53.00% 0.029 1.749 0.664 0.021 1.526 0.029 0.027 0.28 0.09 37.17 . 1859 560 0.88% 53.88% 0.029 1.778 0.685 0.021 1.555 0.029 0.027' 0.28 0.09 37.28 1896 570 0.88% 54.76% .0.-029 1.807 0.706 0.021 1.583 0.029 0.027 0.28 0.09 37.38 1934 580 0.88% 55.64% 0.029 1.836 0.727 0.021 1.612 0.029 0.D27 0.28 0.09. 37.47 1971 590 0.88% 56.52% 0.029 .1.865 0.748 0.021 1.641 0.029 . 0.027 0.28 0.09 3757 2009 600 0.88% 57.40% 0.029 1.894 0.770 0.021 1.670 0.029 0.027 0.28. 0.09 37.-66 2046 610 0.88% 58.28% 0.029 1.923 0.791 0.022 1.698 0.029 0.027 0.28 0.09 37.75 2084 620 0.88% 59.16% 0.029 1.952 0.813 0.022 1.727 0.029 0.027 0.28 0.09 37.83 2122 630 0.88% 60.04% 0.029 1.981 0.835 0.022 1.756 0.029 0.027 0.28 0.-09 37.92 2160 640 0.88% 60.92% 0.029 2.010 0.857 0.022 1.785 0.029 0.027 I 0.28 0.09 38.00 2198 650 0.72% 61.64% 0.024 2.034 0.875 0.D18 1.808 0.024 0.022 ,I 0.23 0.08 27.71 2225 , 660 0.72% 62.36% 0.024 2.058 0.893 0.D18 1.832 0.024 0.022 , 0.23 0.08 27.76 2253 670 0.72% 63.08% 0.024 2.082 0.911 0.018 1.855 0.024 0:022 0.23 0.08 27.81 2281 680 0.72% 63.80% 0.024 2.105 0.930 0.018 1.879 0.024 0.022 0.23 0.08 27.86 2309 690 0.72% 64.52% 0.024 2.129 0.948 0.018 1.902 0.024 0.022 0.23 0.08 . 27.91. 2337 700 . 0.72% 65.24% 0.024 2.153 0.966 0.018 1.926 0.024 0.022 0.23 0.08 27.96 . 2365 710 0.72% 65.96% 0.024 2.177 0.985 0.019 1.950 0.024 0.022 0.23 0.08 28.01 2393 720 0.72% 66.68% 0.024 2.200 1.004 0.019 1.973 0.024 0.022 , 0.23 0.08 28.05 2421 730 0.72% 67 AO% 0.024 2.224 1.022 0.019 1.997 0.024 0.022 0.23 0.08 28.10 2449 740 0.72% 68.12% 0.024 2.248 1.041 0.019 2.020 0.024 0.022 0.24 0.08 28.14 2477 750 0.72% 68.84% . 0.024 2.272 1.060 0.019 2.044 0.024 0.022 0.24 0.08 28.18 2505 760 0.72% 6956% 0.024 2.295 1.079 0.019 2.068 0.024 0.022 . 0.24 0.08 28.22 2533 770 0.57% 70.13% 0.019 2.314 1.094 0.D15 2.086' 0.019 0.D18 0.19 0.06 18.43 2552 780 0.57% 70.70% 0.019 2.333 1.109 0.D15 2.105 0.019 0.018 0.19 0.06 18.46 2570 790 '0.57% 71.27% 0.019 2.352 1.124 0.015 2.124. 0.019 0.018 0.19 0.06 18.48 2589 800 0.57% 71.84% 0.019 2.371 1.139 0.015 2.142 0.019 0.018 0.19 . 0.06 1Ml 2607 810 057%. 72.41 % 0.019 2'.390 1.154 0.015 2.161 0.019 0.018 0.19 0.06 18.53 2626 820 0.57% 72.98% 0.019 2.408 1.169 0.015 2.180 0.019 0.018 0.19 0.06 .1856 - 2644 830 057% "73.55% . 0.019 2.427 1.184 0.015 2.198 0.019 0.018 0.19 0.06 18.58 . 2663 840 0.57% 74.12% - 0.019 2.446 1.199 0.D15 2.217 0.Oi9 0.Dl8 0.19 0.06 18.60 2682 850 '0.57% 74.69% 0.019 2.465 1.215 0.015 2.236 0.019 0.D18 0.19 0.06 18.62 2700 860 0.57% 75.26% 0.019 2.484 1.230 oms 2.254 0.019 0.018 0.19 0.06 18.65 2719 870 0.57% 75.83% 0.019 2.502 1.245 0.015 2273 0.019 0.D18 0.19 0.06 18.67 2738 880 0.57% 76.40% 0.019 2.521 1.261 0.015 2.292 0.019 0.D18 0.19 0.06 18.69 2756 890 0.50% 76.90% 0.017 2.538 1.274 0.014 2.308 0.016 0.0'16 0.16 0.05 14.09 2770 900 .0.50% 7"7.40% 00i7 2.554 1.288 0.014 2.325' 0.016 0.016 0.17 0.06 14:11 2784 910 050% 77.90% 0.017 2.571 1.301 0.014 2.341 0.016 0.016 0.17 0.06 14.12 2799 920 0.50% 78.40% 0.017 2.587 1.315 0.014 2.357 0.016 0.016 0.17 0.06 14.14 2813 930 0.50% 78.90% 0.017 2.604 1.329 0.014 2.374 0.016 0.016 i 0.17 0.06 14.'15 2827 940 0.50% 79.40% 0.017 2.620 1.342 0.014 2.390 0.016 0.016 0.17 0.06 14.17 2841 950 O.~O% 79.90% 0.017 2.637 1.356 0.014 20407 0.016 0.016 0.17 0.06 14.18 2855 960 '0.50% 80.40% 0.017 2.653 1:370 0.014 2.423 0.016 0.016 0.17 0.06 14.20 2869 970 0.50% 80.90% 0.017 2.670 1.383 0.014 2.440 0.016 0.016 0.17 0.06 14.21 2884 980 0.50% 81.40% 0.017 2.686 1.397 0.014 2.456 0.016 0.Oi6 , 0.17 0.06 14.23 . 2898 990' 0.50% 81.90% 0.017 2.703 10411 0.014 2.472 0.016 0.016 0..17 0.06 14.24 2912 1000 0.50% 82.40% 0.017 2.719 1.425 0.014 . 2.489 0.016 0.016 0.17 0.06 14.26 2926 1010 0.40% 82.80% 0.013 2.732 1.436 0.011 2.502 0.013 0.013 0.13 0.04 7.64 2934 1020 0.40% 83.20% 0.013 2.746 1.447 0.011 2.515 0.013 0.013 0.13 0.04 7.64 2942 1030 0.40% 83.60% 0.013 2.759 1.458 0.011 2.528 0.013 0.013 0.13 0.04 7.65 2949 1040 0.40% 84.0'0% 0.013 2.772 1.469 0.011 2.541 0.013 0.013 0.13 0.04 7.66 2957 1050 0.40% 84.40% 0.013 2.785 1.480 . 0011 2.554 0.013 0.013 0.13 0.04 7.67 2965 . . .: 24'HoUT SCS Type lA Design Storm - 2 Year , Incremental Cum'ulative Rainfall mere. Rainfall Accum. Illstant Req'd Stor'g Req'd Stor'g Time distr. Rainfall Iitcrement Rainfall fldwrate Vol In - pere Vol IiI.:. pere min distr. inches inches 'cfs c I 1060 0.40% 84.80% 0.013 2.798 1.491 0.011 2.568 0.013 0.013 I 0.13 0.04 7.68 2972 I 1070 0.40% 85.20% 0.013 2.812 1.502 0.011 2.581 0.013 0.013 I 0.13 0.04 7.69 2980 1080 0.40% 85.60% 0.013 2.825 1.513 0.011 2.594 0.013 0.013 I 0.13 0.04 7.69 2988 1090 0.40% 86.00% 0.013 2.838 1.525 0.011 2.607 0.013 0.013 I 6.13 0.04 7.70 2995 1100 0.40% 86.40% 0.013 2.851 1.536 0.011 2.620 0.013 0.013 0.13 0.04 7.71 3003 1110 0.40% 86.80% 0.013 2.864 1.547 0.011 2.633 0.013 0.013 0.13 0.04 7.72 3011 1120 0.40% 87.20% 0.013 2.878 1.558 0.011 2.646 0.013 0.013 0.13 0.04 7.73 3019 1130 0.40% 87.60% 0.013 2.891 1.569 0.011 2.660 0.013 0.013 0.13 0.04 7.73 '3026 1140 0.40% "88.00% 0.013 2.904 1.581 0.011 2.673 0.013 0.013 0.13 0.04 7.74 3034 . 1150 0.40% 88.40% 0.013 2.917 1.592 0.011 2.686 0.013 0.013 0.13 0.04 7.75 3042 1160 0.40% 88.80% 0.013 2.930 1.603 0.011 2.699 0.013 0.013 0.13 0.04 7.76 3050 1170 0.40% 89.20% 0.013 2.944 1.614 0.011 2.712 0.013 0.013 0.13 0.04 7.77 3057 1180 OAO% 89.60% 0.013 2.957 1.626 0.011 2.725 0.013 0.013 0.13 0.04 7.77 3065 1190 0.40% 90.00% 0.013 2.970 1.637 0.011. 2.738 0.013 0.013 0.13 0.04 7.78 3073 1200 0.40% 90.40% 0.013 2.983 1.648 0.011 2.752 0.013 0.013 0.13 0.04 7.79 3081 1210 0.40% 90.80% 0.013 2.996 1.659 0.01 i 2.765 0.013 0.013 0.13 0.04 7.79 3088 1220 0.40% 91.20% 0.013 3.010 1.671 0.011 2.778 0.013 0.013 0.13 0.04 7.80 3096 1230 . 0.40% "91.60% 0.013 3.023. 1.682 0.011 2.791 0.013 0.013 0.13 0.04 7.81 3104 1240 0.40% 92.00% 0.013 3.036 1.693 0.011 2.804 0.013 0.013 0.13 0.04 7.82 3112 1250 0.40% 92.40% 0.013 3.049 1.705 . 0.011 2.817 0.013 0.013 0.13 0.04 7.82 3120 1260 . 0.40% 92:80% 0.013 3.062 1.716 0.011 2.830 0.013 0.013 .0.13 0.04 7.83 3127 1270 0.40% 93.20% 0.013 3.076 1.727 0.011 2.844 0.013 0.013 0.13 0.04 7.84 3135 1280 0.40% 93.60% 0.013 3.089 1.739 O.OU 2.857 0.013 0.013 0.13 0.04 7.84 3143 1290 0.40% 94.00% 0.013 3.102 1.750 0.011 2.870 0.013 0.013 .1 0.13 0.04 7.85 3151 I 1300 0.40% 94.40% 0.013 3.115 1.762 0.011 2.883 0.013 0.013 i 0.13 0.04 7.86 3159 1310 0.40% 94.80% 0.0!3- 3.128 1.773 0.011 2.896 0.013 0.013 , 0.13 0.04 7.86 3167 I 1320 0.40% 95.20% 0.013 3.142 1.784 0.011 2.909 0.013. 0.013 I 0.13 0.04 7.87 3175 1330 0.40% 95.60% 0.013 3.155 1.796 0.011 2.922 0.013 0.013 0.13 0.04 7.88 . 3182 1340 .0.40% 96.00% 0.013 3.168 1.807 0.011 2.936 0.013 0.013 I 0.04 7.88 3190 , 0.13 1350 0.40% 96.40% 0.013 3.181 1.819 0.011 2.949 0.013 0.013 ! 0.13 0.04 7.89 3198 1360 0.40% 96.80% 0.013 3.194 1.830 0.011 2.962 0.013 0.013 I 0.13 0.04 7.90 3206 , 1370 0040% 97.20% 0.013 3.208 1.842 0.011 2.975 0.013 0.013 I 0.13 0.04 7.90 3214. 1380 0.40% 97.60% 0.013 3.221 1.853 0.011 2.988 0.013 0.013 "0.'13 0.04 7.91 3222 1390 0.40% 98.00% 0.0)3 3.234 1.865 . 0.011 3.001 0.013. 0.013 I 0.13' 0.04 7.91 3230 1400 .0.40% 98.40% 0.013 3.247 1.876 0.012 3.015 0.013 0.013 0.13 0.04 7.92 3238 1410 0.40% 98.80% 0.013 . .3.260 1.888 0.012 3.028 0.013 0.013 I 0.13 0.04 7.93 3246 1420 0.40% 99.20% 0.013 3.274 1.899 0.012 3.041 0.013 0.013 : 0.13 0.04 7.93 3254 1430 0.40% 99.6Q% 0.013 3.287 1.911 0.012 3.054 0.013 0.013 ! 013 0.04 7.94 3262 1440 0.40% 100.0% 0.013 3.300 1.922 0.012 3.067 0.013 0.013 I 0.13 0.04 7.94 3270 I I , . . . .1 EAST CONGREGATION OF JEHOVAH'S WITNESSES I DEVELOPED CONDITION (5-yearw/No infiltration) Rain Garden IFull Buildout design area - 5135 sfl total area = 75,900 1.74 (acres) desi de th~ 1.33 It I pervious area = 20000 0.46 I impervious-area = 55,900 . 1.28 Total storage per area & depth ,listed = 6845 cf . I S - 1.6279 O.2S ~0.3256 Peak Rcq'd Stora2c = 6851 cf S~ 0.2041 0.2S ~ 0.0408 Pc~k Dcsi2D flo~rate = 0.65 cfs total depth rain I . Pt~ 3.8.(inches) . Measured nermeabihtv rate = * inIhr no infiltration used to calc dt~ 10 (min) Design Soil Peni:J.~ity Rate - 0.00 !nlhr storage requirement Tc= 10 (min) \\= 0.33333 percolat~oD rate = 0.00 cf~ File No: 3820 D5-yr.qpw bypass rate = 0.00 cis! no pre-dcveioped rate used 03-16-09, MJK max outflow rate = 0.00 cf~ I 24-Hour SCS Type 1A Design Starin - 5 Year PERVIOUS Incremental CUITlUlative Rainfall mere. Rainfall AccUm. Accum. Increm. Total Desigil Ri:q'd StDr'g Req'd StDr'g Time distr. Rairifall Increment Rainfiill Runoff RlUlOff Runoff flowrate Vol IIi - pere Vol In - pere min distr. . mches inches inches ' inches incheS cfs c c 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10 0.40% 0.40% 0,015 0.Dl5 0.000 0.000 0.000 0.000 0.000 0.00 0.00 QOO 0 20 0.40% 0.80% . 0.015 0.030 0.000 0.000 0.000 0.000 0.000 0.00 0,00 . 0.00 0 '30 0.40%. 1.20% 0.015 0.046 0.000 0.000 0.000 0.000 0.000 0.00 0.00 0.17 0 40 0.40% 1.60% 0.015 0.061 0.000 0.000 0.002 0.002 0.001 0.01 '0.00 2.60 3 50 0.40% 2.00% O.oJ5 0.076 0.000 0.000 0.005 0.003 0.002 0.03 0.01 5.27 8 60 OAO% 2.40% 0.015 0.091 0.000 0.000 . 0.010 0.005 0.004 0.04 0.01 7.46 15 70 0.40% 2.80% 0.015 0.106 0.000 0.000 0.016 0.006 0.004 0.05 0.D2 9.28 25 80 OAO% 3.20% 0.015 0.122 0.000 0.000 0.023 0.007 0,005 0.05 0.02 10.81 36 . 90 OAO% 3.60% 'O.oJ5 0.137 0.000 0.000 0.031 0.008 0.006 0.06 0.02 12.10 48 100 OAO% 4.00% 0.015 0.152 0.000 0.000 0.039 0.009 . 0.006 0.D7 . 0.02 13.21 61 110 0.50% 4.50% 0.019 0.171 0.000 0.000 0.051 0.011 0.008 0.09 0.03 17.84 79 120 0.50% 5.00% 0.019 0.190 0.000 0.000 0.063 0.012 0.009 0.10 0.03 19.10 98 . 130 0.50% 5.50% 0.019 0.209 0.000 0,000 0.076 0.013 0.010 0.10 0.03 20.16 U8 140 0.50% 6.00% 0.019 0.228 0.000 0.000 0.090 0.014 0.010 0.11 0.04 21.07 139 150 0.50% 6.50% 0.019 0.247 0.000 0.000 0,104 0.014 0.010 0.11 0.04 '21.85 161 160 0.50% 7.00% 0.019 0.266 0.000 0.000 0.118 O.oJ 5 0.011 0.11 0.04 22.53 183 170 0.60% 7.60% 0.023 0.289 0.000 0.000 0.136 0.Dl8 0.013 0.14 0.05 27.80 211 180 0.60% 8.20% 0.023 0.312 0.000 0.000 0.154 0.018 0.014 0.14 0.05 28.53 240 190 0.60% 8.80% 0.023 0.334 0.000 0.000 0.173 0.019 0'014 0.15 0.05 29.19 269 200 0.60%' 9.40% . 0.023 0.357 0.001 0.001 0.192. 0.019 0.014 0.15 0.05 30.02 299 210 0.60% .10.00% 0.023 0.380 0.002 0.001 0.212 0.019 O.oJ5 I 0.15 0.05 30.83 330 220 0.60% 19.60% 0.023 0.403 0.003 0.002 0.231 0.020 0,015 0.16 0.05 31.57 361 230 0.70% 11.30% . 0.027 0.429 0.006 0.003 0.255 0.023 0.018 0.19 0.06 37.69 399 . 240 0.70% 12.00.% 0.027. 0.456 0.010 0.003 . 0.278 0.024 0.Dl8 0.19 0.06 38.53 438 250 0.70% 12.70% 0.027 0.483 0.014 0.004 0.302 0.024 0.019 0.20 0.D7 39.30 477 260 0.70% .13.40% 0.027 0.509 0.019 0.005 0.326 0.024 0.019 0.20 0.D7 40.01 517 270 0.70% 14.10% 0.027 0.536 0.024 0.005 0.350 0.024 0.019 0.20 0.07 40.66 558 289 0.70% 14.80% 0.027 0.562 0.030 0.006 0.375 0.024 0.020 0.21 0.D7 41.26 599 290 '0.82%' 15.6~% 0.031 . 0.594~ 0.038 0.008 0.404 0.029 0.023 0.25 . 0:08 49.05 . 648" 300 0.82% 16.44% omi 0.625 0.046 0.009 0.433 0.029 0.024 0.25 0.08 49.76 698 310 0.82% 17.26% 0.031 0.656 0,056 0.009 0.462 0.029 0.024 0.25 0.08 50.42 748 320 0,82%. 18.08% 0.031 0.687 0.066 0.010 0.491 0.029 . 0.024 0.26 0.09 51.03' 799, 330 0.82% 18.90% 0.031 0.718 0.076 0.011 0.521 0.029 0,024 0.26 0.09 51.59 851 340 0.82% 19.72%' 0.031 0.749 , 0.088 0.011 0.550 0.030 0.D25 0.26 0.09 52,12 903 350 0.95% 20.67% 0.036 0.785 0.101 0.014 0.584 .0.034 0.029 I 0.31 0.10 61.01 964 360 0.95% 21.62%- 0.036 0.822 0.116 0.D15 0.619 0.034 0.029 0.31 0.10 61.63 ,1025 370 0.95% 22.57% 0.036 0.858 0,131 0:015 0.654 0.035 0.030 : 0.31 0.10 62.20 1088 ' 380 0.95% 23.52% 0.036 0.894 0.147 0.016 0.688 0,035 0.030 ! 0.31 0.10 62.74 1150 390 0.95% 24.47% 0.036 0.930 0.164 0.017 0.723 0.035 0.030 I 0.32 0.11 63.25 1214 400 0.95% 25:42% 0.036 0.966 0.181 0.017 0.758 0,035 0.030 0.32 0.11 63.72 1277 410 1.34% 26.76% 0.051 1.017 0.206 0.025 0.807 0.049 0.043 I 0.45 0.15 90.63 1368 420 1.34% 28.10% 0.051 1.068 0.232 0.026 0.857 0.049 0.043 I 0.46 0.15 91.45 . 1459 430 1.34% 29.44% 0.051 .1.119 0.260 0.027 0.906 0.050 0.044 I 0.46 0.15 92.20 1552 . . 2~iIour SCS Type 1 A Design Storm - 5 Year Rainfall Incre. Ririnfall Accum. Design Req'd Storg Reqid Storg Time distr. Rainfall Increment Rainfall flowrate Vol In - perc Vol In.- perc mm distr. inches incheS cfs 440 1.80% 31.24% '0.068 !.l87 0298 0.0'18 0.973 0.067 0,059 0.62 0.21 124.95 1677 450 1.80% 33.04% 0.068 1.256 0.338 0.040 1.040 .0.067 0.060' 0.63 0.21 126.09 1803 460 3.40% 36.44% 0.129 1.385 0.417 0.079 Ll67 0.127 0.114 1.20 0.40 240.92 2044 470 5.40% 41.84% 0.205 1.590 0553 0.135 1.369 0202 0.184 1.94 0.65 388.87 2432 480 2.70% 4454% 0.103 1.693 0.624 0,071 1.470 0.101 0.093 0.98 0.33 196.84 2629 490 1.80% 46.34% 0.068 1.761 0.673 0.049 1.538 0.068 0.063 0.66 022 131.99 . 2761 500 1.34% 47.68% 0.051 1.812 0.709 0.037 1.588 0.050 0.ll47 0.49 0.16 98.63 2860 . 510 1.34% 49.02% 0.051 1.863 0.747 0.037 1.638 0.050 0.047 0.49 0.16 98.93 2959 .520 1.34% 50.36% 0.051 1.914 0.784 0.0'18 1.689 0.050 0.047 050 0.17 99.21 3058 530 0.88% 51.24% 0.033 1.947 0,809 0.025 1.722 0.033 0.031 I 0.33 0.11 65.30 3123 540 0.88% 52.12% 0.033 1.981 0.834 0.025 . 1.755 0.033 0.031 0.33 0.11 65.41 3189 550 0.88% 53.00% 0.033 2.014 0,860 0.025 . 1.788 0.033 0.031 0.33 0.11 6552 3254 560 0.88% 53.88% 0.033 2.047 0.885 0.025 1.821 0.033 0.031 0.33 0.11 65.62 3320 570 0.88% 54.76% 0.033 . 2.081 0.911 0.026 1.855 0,033 0.031 0.33 0,11 65,72 3386 580 0.88% 55.64% 0,033 2.114 0,936 0.026 1.888 0.033 0,031 0.33 0,11 65,82 3451 590 0.88% 56.52% 0,033 2.148 0,962 0.026 1.921 0,033 0,031 0.33 O,il 65.92 3517 600 0.88% 57.40% 0.033 2.181 0,988 0,026 1.954 0,033 0,031 0.33 O,il 66,01 3583 610 0.88% 58.28% 0.033 2215 1.015 0,026 1.987 0.033 0.031 0.33 0,11 66.10 3649 620 0.88% 59,16% 0.033 2.248 1.041 0.026 2,020 0,033 0,031 0.33 0.11 66.18 3716 630 0.88% 60.04% 0.033 2.282 1.067 0,026 2.054 0,033 0,031 0,33 0,11 66.27 3782 640 0.88% 60.92% 0.033 2.315 .1.094 0,027 2,087 0.033 0.031 0.33 0,11 66.35 3848 650 0.72% 61.64% 0,027 2.342 Lll6 0.022 2.114 0,027 0.026 027 0.09 54.34 3903 660 0.72% 62.36% 0,027. 2.370 Ll38 0,022 2.141 0,027 0,026 0.27 0.09 54,40 3957 670 0.72% 63.08% 0.027 2.397 Ll60 0.022 2,168 0,027 0,026 027 0.09 54.45 4011 680 0.72% 63.80% 0,027 2.424 1.182 0.022 2,196 0,027 0.026 0.27 0.09 5450 4066 690 0.72% 64.52% 0,027 2.452 1204 0.022 2,223 0,027 0.026 0,27 0.09 54,54 _ 4120 700 0.72% 65.24% 0,027 2.479 1.226 0.022 2250 0.027 0.026 0.27 0.09 5459 4175 710 0.72% 65,96% 0,027 2506 1.249 0,022 2277 0,027 0,026 0.27 ,0,09 54,64 4230 720 0.72% 66.68% 0.027 2,534 1.271 0.022 2.304 0,027 0,026 0.27 0.09 54,68 4284 730 0.72% 67,40% 0,027 2,561 1.294 0.022 2.332 0,027 0,026 027 0.09 54,73 4339 740 0.72% 68.112% 0.027 2.589 1.316 0.023 2.359 0,027 0,026 027 0,09 54.77 4394 750 0.72% 68.84% 0,027 2,616 1.339 0,023' 2.386 0,027 0,026 0,27 0,09 54,81 4449 760 0.72% 6956% 0,027 2.643 1.361 0,023 2.413 0.027 0.026 0.27 0,09 54,85 .4504 770 0.57% 70.13% 0,022 2,665 1.379 0,018 2.435 0.022 0.021 022 0,07 43.45 4547 780 0.57% 70.70% 0,022 2.687 1.397 0.Gl8 2.456 0.022 0.021 0.22 0.07 43,48 4590 790 OS7% 71.27% 0.022 2,708 1.416 . 0.018 2.478 0,022 0,021 I 0.22 0.Q7 4350 4634 800 0.57% 71.84% 0,022 2,730 1.434 0,018 ' 2.499 0,022 0,021 , 0.22 0.07 4353 4678 810 "0.57% 72.41% 0,022 2,752 1.452 0.018 2.521 0,022 0,021 i,' 0.22 0.07 43.55 4721. 820 0.57% 72.98% 0,022 2,773 . ' 1.470 0,018 2.543 0,022 0.021 0.22 0-97 43.57 4765 830 0.57% 73.55% 0.022 2,795 1.4B8 O.OIB 2564 0,022 0.021 0,22 0.07 4HO' 4808 840 0.57% 74.12% 0,022 2,817 1.506 0.018 2586 0.022 0.021 0.22 0.07 43,62 4852 850 0.57% 74.69% 0,(Jz2 2,838 1.525 Om8 2.607 0,022 0.021 0.22 0.D7 43.64 4895 860 .0.57% 75.26% 0,022 2,860 1.543 0,018 2,629 0,022 0.021 0.22 0.07 43,66 4939 870 0.57% 75.83% 0.022 2,882 1.561 0.018 2.650 0,022 0,021 0.22 0.07 43.68 4983 880 0.57% 76.40% 0,022 2,903 1.580 0,018 2,672 0,022 0,021 0.22 0.D7 43.70 ,5027 890 0.50% 76,90% 0.019 2.922 1.596 0,016 2.691 0,019. om8 0,19 0,06 38.35 5065 900 0_50% 77.40% 0.019 2.941 1.612 0:016 ' 2,710 0.019 om8 '0.19 0.06 38.37 5103 9]0 050% 77.90% 0.019 2.960 1.628 - 0,016 2.729 . 0,019 Om8 0,19 0.06 38.39 5]42 920 0.50% 78.40% 0.019 2.979 1.645 0,016 2,748 0.019 0.018 0.19 0.06 38.40 5180 930, 0.50% 78,90% 0,019 2,998 1.66] 0.016 2,766 . 0,0]9 Om8 0.19 0,06 38:42 5218 940 0.50% 79.40% 0,019 3017 1.6Ti 0,0]6 2,785 0.019 0.018 0.19 0.06 38.43 5257 950 0.50% 79,90% 0,019 3.036 1.694 0,016 2.804 0.019 0.018 0.19 0.06 38.44 5295 . 960 0.50% 80.40% 0,019 3.055 1.710 0.016 2,823 0,019 0.018 0,19 0,06 38.46 5334 970 050% 80.90% 0.019 3,074 1.726 0,016 2.842 0,019 Om8 0,]9 0.06 38.47 5372 980 0.50% 81.40% 0,019 3.093 1.743 0.016 2,861 0,019 0.018 0.19 0,06 38.49. 5411 990 0.50% 81.90% 0,019 3.]12 1.759 0.016 2.880 0.019 0.018 0.19 0.06 3850 .5449 1000 050% 82,40% 0,019 3.131 1.775 0,016 2.899 0.0]9 . 0.018 0.19 0.06 38.52 5488 1010 0.40% 82.80% 0.015 3.)4(; 1.789 ' 0.013 2.914 Om5 Om5 0,15 0,05 30,82 5519 1020 OAO% 83.20% 0,015 3,162 1.802 0.013 2.929 0.015 0.015 0,\5 0,05 30,83 5549 1030 0.40% 83,60"10 0,015 3,177 1.815 0,013 2.944 0.0]5 0,015 0,15 0.05 30,84 5580 1040 0.40% 84.00% 0.Dl5 3.192 1.828 0.013. 2.960 0.015 0,015 0.15 0.05 30,85 5611 1050 0.40% 84.40% Om5 3.207 1.841 Om3 2,975 0,015 0.015 0.15 0.05 30.86 5642 . . 24-Hour SCS Type 1A Design Storm - 5 Year Rainfall mere. Rainfall ACCUlll. Design Req'd Stor'g Req'd Stor'g Time distr. Rainfall lncrement Rainfall flowrate Vol hi - perc Vol In - perc mm distr. inches inches cfs c c 1060 OAO% 84.80% 0.015 3.222 1.855 0.013 2.990 0.Ql5 0.Ql5 0.15 0.05 30.86 5673 1070 0.40%' 85.20% 0.015 3.238 1.868 0.013 3.005 0.Ql5 0.Ql5 0.15 0.05 30.87 5704 1080 0.40% 85.60% '0.015 3.253 1.881 0.013 3.020 0.Ql5 0.Ql5 0.15 0.05 30.88 5735 1090 0.40% 86.00% 0.015 3.268 1.894 0.013 3.035 0.015 0.Ql5 0.15 0.05 30.89 5765 1100 0.40% 86.40% 0.015 3.283 1.908 0.013 3.050 0.015 0.015 0.15 0.05 30.90 . 5796 1110 0.40% .86.80% 0.015 3.298 1.921 0.013 3.066 0.015 O.ot5 0.15 0.05 30.90 5827 1120 0.40% 87.20% 0,015 33i4 1.934 0.013 3.081 0.Ql5 0.Ql5 0.15 0.05 30.91 5858 1130 0.40% 87.60% 0.015 3.329 1.948 0.013 3.096 0.015 0.015 0.15 0.05 30.92 5889' 1140 0.40% 88;00% 0.015 3344 1.961 0.013 3.111 0.Ql5 0.015 0.15 0.05 30.93 5920 1150 0.40% 88.40% 0.Ql5 3359 1.974 0.013 3.126 0:015 0.015 0.15 0.05 30.93 5951 1160 0.40%- 88.80% 0.Ql5 3374 1.988 0.013 3.141 0.015 0.Ql5 0.15 0.05 30.94 5982 1170 0040% 89.20% 0.015 3390 2.001 0.013 3.156 0.015 0.015 0.15 0.05 30.95 6013 1180 0.40%" 89.60% 0.015 3.405 2.014 0.013 3.172 0.Ql5 0.Ql5 0.15 0.05 30.96 6044 1190 0.40% 90.00% 0.015 3.420 2.028 0.013 3.187 0.Ql5 0.015 0.15 0.05 30.96 6075 1200 0.40% 90.40% 0.015 3.435 2.041 0.013 3.202 0.Ql5 0.Ql5 0.15 0.05 30,97 6106 1210 0.40% 90.80% 0.Ql5 3.450 2.055 0.013 3.217 0.Ql5 0.015 0.15 0.05 30.98 6137 1220 0.40% 91.20% 0.015 3.466 2.068 0.013 3.232 0.015 0.015 0.15 0.05 30.98 . 6168 1230 0.40% 91.60% 0.Ql5 3.481 2.081 0.013 3.247 0.Ql5 0.Ql5 0.15 0.05 30.99 6199 1240 0.40% 92.00% . 0.015 3.496 2.095 0.013 3.262 0.Ql5 0.015 0.15 0.Q5 31.00 6230 1250 0.40% 92.40% 0.015 3.511 2.108 0.013 3.278 0.Ql5 0.Ql5 0.16 0.05 31.00 6261 1260 0.40% 92.80% 0.015 3.526 2,122 0.013 . 3.293 0.015 0.015 0.16 0.05 31.01 6292 1270 0.40% 93.20% 0.015 3.542 2.135 0.013 3.308 0.015 0.015 0.16 0.05 3l'.02 6323 1280 0.40% 93.60% 0.015 3.557 2.149 0.013 3.323 0.015 0.Ql5 0.16 0.05 31.02 6354 1290 0.40% 94.00% 0.015 3.572 2.162 0.013 3.338 0.015 0.Ql5 0.16 0.05 31.03 6385 1300 0.40% 94.40% 0.Ql5 3.587 2.176 0.014 3353 0.Ql5 0.Ql5 0.16 0,05 31.04 6416 1310 0040% 94.80% 0.015 3.602 2.189 0.014 3369 0.015 0.015 0.16 0.05 31.04 6447 1320 0.40% 95.20% 0.015 3.618 2.203 0.014 3.384 0.Ql5 0.015 0.16 0.05 31.05 6478 1330 0.40% 95.60% 0.Ql5 3.633 2.216 0.014 3,399 0.015 O.ot5 0.16 0.05 . 31.06 6509 1340 0.40% 96.00% 0.015 3.648 2.230 0.014 3.414 0.015 0.015 0.16 0.05 31.06 6540 1350 0.40% 96.40% 0.015 3.663 2.243 0.014 3.429 0.Ql5 0.Ql5 0.16 0.05 31.07 6571. 1360 0.40% 96.80% 0.015 3.678 2.257 0.014 3.444 0.015 0.015 0.16 0.05 31.07 6602 1370 0.40% 97.20% 0.015 3.694 2.271 0.014 3.460 0.Ql5 0.015 0.16 0.05 31.08 6633 1380 0.40% 97:60% 0.Ql5 3.709 2.284 0.014' 3.475 0.015 0.015 i 0.16 0.05 31.09 6664 1390 0.40% 98.00% 0.Ql5 . 3.724 2.298 0.014 3.490 0.015 0.015 0.16 0.05 31.09 6695 1400 0.40% "98.40% 0.015 3.739 2.311 0.014 3.505 0.015 0.015 0.16 0.05 31.10 6727 1410 0.40% 98.80% 0.015 3.754 2325 0.014 3.520 0.915 0.015 0.16 0.05 31.10 6758 1420 0.40% 99".20% 0.015 3.770 2339 0.014 3.535 0.015 . 0.015 0.16 0.05 31.11 6789 1430 0.40% 99.60% 0.015 3.785 2.352 0.014 3.550 . 0.Ql5 0.015 0.16 0.05 '31.12 6820 1440 0040% '100.0% 0.Ql5 3.800 2.366 0.014 3.566 0.015 0.QI5 0.16 0.05 31.12 6851 .t . . . EAST CONGREGATION OF JEHOVAH'S WITNESSES DEVELOPED CONDITION (5-year wi Infiltration Rilin Garden bottom ~dth - 48.5 it jFnll Buildout bottom leneth ~ 93.5 it total area = 75,900 1.74 (acres) bottom area (infiltrationl area)- 4535 sf pervIOus area -== - 20000 0.46 I . I impervious area = 55,900 1.28 Peak Req'd Storaec = 4259 cf Pervious eN - 86 S - 1.6279 O.2S - 0.3256 Peak Design f10~rate == . 0.65 cfs 1m ervious CN ~ 98 S~ 0.2041 O.2S ~ 0.0408 I drawdownl time = 38 hr . total depth rain I Pt~ 3.8 (inches) SCS miriimum eabili rate = 0.60 inIhr dt~ 10 (min) Design Soil Permeality Rate- 0.3000 in/hr scs minJi T~ 10 (min) w~ 0.33333 percolation rate = 0.0315 cfj using bottom area only I . File No: 3820 D5i-yr.<jpw bypass rate = 0.0000 cf~ no prc-developed rate used 03-16-09, MJK max outflow, rate = 0.0315 cfs J I 24"HourSCS Type lA Design Stonn - 5 Year PERVIOUS IMPERVIOUS I IncremenUiJ. Cumulative Rainfall mere. Rainfall Accum. Accum. Increm: Accum. !nerem. Req'd Stoi'g Req'd Stor'g Time "distr. Rainfall Increment Rainfall Runoff Runoff Runoff Runoff Vol In - perc Vo~ In - perc min) . distL incheS inches inches inches indies inches c c 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10 0.40% 0.40% 0.015 0.015 0.000 0.000 t 0000 0.000 0.000 0.00 0.00 0.00 0 20 0.40% 0.80% 0.015 0.030 0,000 0.000 0.000 0.000 0.000 0.00 0.00 0.00 0 30 0.40% 1.20% 0.015. . 0.046 0.000 0.000 0.000 0.000 0.000 0.00 0.00 0.00 0 40 0.40% 1.60% 0.015 0.061 0.000 0.000 0.002 0.002 0.001 0.01 0.00 0.00 0 50 0.40% 2.00% 0.015 0.076 0.000. 0.000 0.005 0.003 0.002 0.03 0.01 0.00 0 60 0.40% 2.40% 0.015 0.091 0.000 0.000 0.010 0.005 0.004 0.04 0.0] 0.00 0 70 0.40% .2.80% 0.Oi5 OJ06 0.000 0.000 Om6 0.006 0.004 0.05 0.02 0.00 0 80 0.40% . 3.20% 0.015 0.122 0.000 0.000 0.023 0.007 0.005 0.05 0.02 0.00 0 90 0.40% 3.60% 0.015 0.137 0.000 0.000 0.031 0.008 0.006 0.06 0.02 0.00 0 100 0.40% 4.00% 0.015 OJ52 0.000 0.000 0.039 0.009 0.006 0.07 0.02 0.00 6 \10 0.50% 4.50% 0.019 0.171 0.000 0.000 0.051 0.011 0.008 0.09 0.03 0.00 0 120 0.50% 5.00% 0.019 OJ90 0.000 0.000 0.063 0.012 0.009 OJO 0.D3 0.20 0 130 0.50% 5.50% 0.019 0.209 0.000 0.000 0.076 0.013 0.010 OJO 0.03 1.26 1 140 0.50% .6.00% 0.019 0.228 0.000 0.000 0.090 0.014 0.010 , 0.11 0.04 2.17 4 150 0.50% 6.50% 0.019 0.247 0.000' 0.000 0.104 0.014 0.010 0.11 0.04 2.95 7 160 0.50% 7.00% 0.019 0.266 0.000 0.000 0.118 . 0.015 0.01 ] 0.11 0.04 3,63 10 170 0.60% 7.60% 0.023 0.289 0.000 0.000 0.136 0.018 0.013 0.14 0.05 8.91 19 180 0.60% 8.20% 0.023 0.312 0.000 0.000 0.154 0.018 0.014 ; 0.14 0.05 9.64 29 190 0.60% 8.80% 0.023 0.334 0.000 0.000 0.173 0.019 0.014 0.15 0.05 10.30 39 200 0.60% 9.40% 0.023 0.357 0.001 0.001 0.192 0.019 0.014 , 0.15 0.05 11.12 50 210 0,60% 10,00% 0.023 0.380 0.002 0.001 0.212 0.019 oms 0.15 0.05 11.94 62 220 0.60% 10.60% 0.023 00403 0.003 0.002 0'231 0.020 oms 0.16 0.05 12.68 75 .230 0.70% 11.30% 0.027 0.429 0.006 0.003 0.255 Om3 0.018 0.19 0.06 18.80 94 240 0.70% 12.00% 0.027 0.456 0.010 0.003 0.278 0.024 6.018 0.19 0.06 19.64 113 250 0.70% 12.70% 0.027 0.483 0.014 0.004 0.302 0.024 0.019 0.20 - O.oz 20.41 134 260 0.70% 13.40% 0.027 0.509 0.019 0.005 0.326 0.024 0.019 0.20 0.D7 21.11 155 270 0.70% 14.10% 6.027 0.536 0.024 0.005 0.350 0.024 0,019 0.20 < 0.D7 21.77 . 177 280 0.70% 14.80% 0.027 0.562 0.030 0.006 0.375 0.024 0.020 0.21 0.D7 22.37 199 290 0.82% 15.62% 0.D31' .' . 0.594 0.D38 0:008 0.404 0.029 0.023 0.25 0.08 30.16 ' '229' 300 . 0.82% 16.44% 0.031 0.625 0.046 0.009 0.433 0.029 0.024 0.25 0.08 30.86 260 310 0.82% 17.26% 0.031 0.656 0.056 0.009 0.462 0.029 0.024 0.25 0.08 3L52 291 320 0.82% 18.08% 0.031 0.687 0.066 0.010 0.491 0.029 0.024 0.26 0.09 32.13 324 330 0.82% 18.90% 0.031 0.718 0.076 0.011 0.521 0.029 0.024 0.26 0.09 3270 356 340 0.82% 19.72% 0.031 0.749 0.088 0.011 0.550 0.030 0.025 0.26 0.09 33.23 390 350 0.95% 20.67% 0.036 0.785 0.101 0.014 0.584 0.034 0.029 031 0.10 42.11 432 360 0.95% 21.62% 0.036 0.822 0.116 oms 0.619 0.034 0.029 0.31 0.10 42.73 474 370 0.95% 22.57% 0.036 0.858 0.131 0.015 0.654 0.035 0.030 0.31 0.10 43.31 . 518 380 0.95% 23.52% 0.036 0.894 0.147 0.016 0.688 0.035 0.030 031 0.10 43.85 562 390 0.95% 24.47% 0.036 0.930 0.164 0.017 0.723 0.D35 0.030 0.32 0.11 44.35 606 400 0.95% 25.42% 0.036 0.966 0.181 0.017 0.758 0.D35 0.030 0.32 0.11 44.83 651 410 1.34% 26.76% .0.051 1.017 0.206 0.025 0.807 0,049 0.043 i 0.45 OJ5 71)4 722 420 1.34% 28.10% 0.051 1.068 0.232 0.026 0.857 0.049 0.043 I 0.46 0.15 72.56 795 430 1.34% 29.44% 0.051 1.l19 0.260 0.027 0.906 0.050 0.044 0.46 0.15 73.31 868 . . . 24'Hour SCS Type lA Design Storm. 5 Year PERVIOUS Incremental Cuinulative Rainfall Inere. Rainful1 Accum. Req'd Stor'g Req'd Stor'g Time distr. Rainfall Rainfall Vol In - perc VolIn ~ perc min distr. inches c 440 1.80% 31.24% 0.068 1.187 0.298 0.038 0.973 0.067 0.059 0.62 0.21 106.05 974 450 1.80% 33.04% 0,068 1.256 0.338 0.040 1.040 0.067 0.060 0.63 0.21 ]07.19 1082 460 3.40% 36.44% 0.129 1.385 ^ 0.4]7 0.079 1.167 0.]27 0.114 1.20 0.40 222.02 1304 470 5.40% 41.84% 0.205 1.590 0.553 0.135 "1.369 0.202 0.184 1.94 0.65 369.97 1674 480 2.70% 44.54% 0.]03 1.693 0.624 0.071 1.470 0.10] 0.093 0.98 0.33 ]77.94 1851 490 L~O% 46.34% 0.068 1.76] 0.673 0.049 1.538 0.068 0.063 0.66 0.22 i13.1O 1965 500 1.34% 47.68% 0.051 1.8]2 0.709 0.037 1.588 0.050 0.047 0.49 0.16 79.74 2044 510 1.34% 49.02% 0.05] 1.863 0.747 0.037 1.638 0.050 0.047 , 0.49 0.16 .80.03 2]24 520 1.34% 50.36% 0.051. 1.9]4 0.784 0.038 1.689 0.050 0.047 0.50 0.17 80.3] 2205 530 0.88% 51.24% 0.033 1.947 0.809 0.D25 1.722 0.033 0.031 0.33 0.11 46.40 2251 540 0.88% 52.12% 0.033 1.98] 0.834 0.025 1.755 0.033 0.03] 0.33 0.11 46.51 2298 550 0.88% 53.00%' 0.033 2.014 0.860 0.D25 1.788 0.033 0.03] 0.33 0.11 46.62 2344 560 0.88% 53.88% 0.033 2.047 0.885 0.025 1.821 0.033 0.031 0.33 0.11 46.73 2391 570 0.88% 54.76% 0.033 2.081 0.91i 0.026 1.855 0.033 0:031 , 0.33 0.11 46.83 2438 580 .0.88% 55.64% 0.033 2.1]4 0.936 0,026 1.888 0.033' 0.03] 0.33 0.11 46.93 2485 590 0.88% 56.52% 0.033 2.148 0.962 0.026 1.921 0.033 0.03] 0.33 0.11 47.02 2532 600 0.88% 57.40% 0.033 2.]8] 0.988 0.026 1.954 0.033 0.031 0.33 0.11 47.1 ] 2579 6]0 0.88% 58.28% 0.033 2.215 1.015 0.026 1.987 0.033 0.031 0.33 0.11 47.20 2626 620 0.88% 59.16% 0.033 2.248 1.041 0.026 2.020 om3 0.031 0.33 0.11 47.29 2673. 630 0.88% 60.04% 0.033 2.282 1.067 .'0.026 2.054 0.033 0.03] 0.33 0.11 47.37 2721 640 0.88% 60.92% 0.033 2.315 1.094 0.027 2.087 0.033 0.031 0.33 0.11 47.45 2768 650 0.72% 61.64% .0.027 2.342 1.1]6 0.022 2.114 . 0,027 0.026 0.27 0.09 35.45 2804 660 0.72% --62.36% 0.027 2.370 1.138 0.022 2.141 0.027 0.026 0.27 0.09 35.50 2839 670 0.72% 63.08% 0.027 2.397 1.160 0.022 2.168 0.027 0.026 0.27 0.09 35.55 2875 680 0.72% 63.80% 0.027 2.424 1.182 0.022 2.]96 0.027 0.026 0.27 0.09 35.60 2910 690 0.72% 64.52% 0.027 2.452 1.204 0.022 2.223 0.027 0.026 0.27 0.09. 35,65 2946 700 0.72% 65.24% 0.027 2.479 1.226 0.022 2.250 0.027 0.026 0.27 0.09 35.70 . 2982 7]0 0.72% 65.96% 0.027 2.506 1.249 0.022 2.277 0.027 0.026 0.27 0.09 35.74 3017 720 0.72% 66.68% 0.027 2.534 1.271 0.022 2.304 0.027 0.026 0.27 0.09 35.79 3053 730 0.72% 67.40% 0.027 2.56] 1.294 0.022 2.332 0.027 0.026 0.27 0.09 35.83 3089 740 0.72% 68.12% 0.027 2.589 1.316 0.023 2.359 0.02"( 0.026 I 0.27 0.09 35.87 3125 750 0.72% 68.84% 0.027 2.6]6 1.339 0.0.3 2.386' 0.027 0.026 0.27 0.09 35:92 3161 760 0.72% 69.56% 0.027 2643 1.361 0.023 2.413 0.027 0.026 0.27 0.09 35.96 3197 770 0.57% 70.13% 0.022 2.665 1.379 0.018 2.435 0.022 0.02] 0.22 0.07 24.56 322i 780 0.57% 70.70% 0.022 2.687 1.397 0.018 2.456 0.022 0.021 0.22 0.07 24.58 3246 790 0.57% 71.27% 0.022 2.708 1.416 0.018 2.478 0.022 0.021 0.22 0.07 24.6] 3270 800 0.57% 71.84% 0.022 2.730 1.434 0.Gl8 2.499 0.022 0.021 0.22 0.07 . 24.63 3295 .8]0 0.57% 72.41% 0.022 2)52 1.452 0.018 2.521 0.022 0.021 0.22 0.07 24.65 3320 820 0.57% 72.98% 0.022 2.773 1.470 '0.Gl8 2.543 0.022 0,02] 0.22 0.07 ' 24.68 3344 830 0.57.% 73.55% 0.022 2.795 1.488 0.018 2.564 0.022 0.02] 0.22 0.07 24.70 3369 840 057% 74.12% 0.022 2.817 1.506 0.018 2.586 0.022 0021 ; 0.22 0.07 24.72 3394 850 0.57% 74.69% 0.022 2.838 1.525 0.018 2.607 0.022 0,021 ' 0.22 0.07 24.75 . 3419 860 0.57% 75.26% 0.022 2.860 1.543 0.Oi8 2.629 0.022 0.021 ; 0.22 0.D7 24.77 3443 870 0.57% 75.83% 0.022 2.882 1.561 0.018 2.650 0.022 0.02] 10.22 0.07 .24.79 3468 880 0.57% 76.40% 0.022 2.903 1.580 0.018 2.672 0.022 0.021 ! 0.22 0.07 24.81 3493 I 890 0.50% 76.90% 0.019 2.922 1.596 0.016 2.69] 0.019 0.018 , 0.19 0.06 19.46 3512 900' b.5~6% 77.40% 0.019 2.941 1.612 . 0.016 2.710 0.019 0.018 , 0.19 0.06 19.47 . 3532 910 0.50% 77.90% 0.019 2,960 1.628 0.016 2.729 0.019 O.Q1S ,0.19 0.06 19.49 3551 920 0.50% 78.40% 0.019 2.979 1.645 0.016 2.748 0.019 0.018 I 0.19 0.06 19.51 3571 0.50% 78.90% 0.019 2.998 1.661 0.016 2.766 0.019 0.Q18 , 0.19 0.06 19.52 3590 930 940 .0.50% 79.40% 0.019 3.017 1.677 0.016 2.785 0.019 0.0]8 ; 0.19 0.06 19.54 3610 950 0.50% 79.90% 0.0]9 3.036 1.694 0.016 2.804 0.019 0.0]8 . 0.19 0.06 19.55 3629 960 0.50% 80.40% 0.019 3,055 1.710 0.016 2.823 0.019 0.018 . 0.19 0.06 19.56 3649 970 0.50% 80.90% 0.019 3.074 1.726 0.016 2.842 0.019 0:018 i 0.19 0.06 19.58 3669 980 0.50% 81.40% 0.019 3.093 1.743 0.016 2.861 0.019 0.018 , 0.19 0.06 19.59 3688 990 0.50% 81.90% 0.019 3.112 1.759 0.016 2.880 0.019 0.018 ' 0.19 0.06 19.61 3708 1000 0.50% 82.40% 0.019 3.131 1.775 0.016 2.899 0.0]9 0.018 . 0.19 0.06 ]9.62 3727 1010 OAO% 82.80% 0.Q15 3.]46 1.789 0.013 2.914 0.015 0.015 0.15 0.05 ]1.93 3739 1020 0.40% 83.20% 0.015 3.162 1.802 0.013 2.929 0.Q15 0.Q15 0.15 0.05 11.94 3751 1030 0.40% 83.60% 0.015 3.177 1.815 0.Q13 2.944 0.Gl5 0.Q15 0.15 0.05 11.94 3763 1040 0.40% 84.00% 0.Q15 3.192 1.828 .0.013 2.960 0.Q15 0.015 0.15 0.05 11.95 3775 1050 0.40% 84.40% 0.015 3.207 1.841 0.013 2.975 0.Q15 0.015 0.15 0,05 11.96 3787 . . . 24-Hour SCS Type lA Design Stonn - 5 Year lnCremental Cumulative Rairifall mere. Rainfall Accum. Req'd Stor'g Req'd SlDrg Time distr. Rainfall Increment Rainfall Volin - pere Vol In - pere min distr. inches inches . e e 1060 0.40% 84.80% 0.Ql5 3.222 1.855 0.013 2.990 0.015 0.Ql5 0.15 0.05. 11.97 3799 1070 0.40% 85.20% 0.015 3.238 1.868 0.013 3.005 0.015 0.Ql5 0.15 0.05 i1.98 381i 1080 0.40% 85.60% 0.015 3.253 1.881 0.013 3.020 0.015 0.Ql5 0.15 0.05 11.99 3823 1090 0040% 86.00% 0.Ql5 3.268 1.894 0.013 3.035 0.D15 0.Ql5 0.15 0.05 11.99 3835 lIOO 0.40% 86.40% 0.Ql5 3.283 1.908 0.013 3.050 0.015 0.015 0.15 0.05 12.00 3847 llIO 0.40% 86.80% 0.015 3.298 1.921 0.013 3.066 0.015 0.015 0.15 0.05 12.01 3859 1120 0.40% 87.20% 0.015 3.314 1.934 0.013 3.081 0.015 0.015 0.15 0.05 12.02 3871 1130 0.40% 87.60% 0.015 3.329 1.948 0.013 3.096 0.015 0.Ql5 0.15 0.05 12.02 3883 lI40 0.40% 88.00% 0.Ql5 3.344 1.961 0.013 3.1lI 0.015 0.Ql5 ! 0.15 0.05 12,03 3895. lI50 0.40% 188.40% 0.Ql5 3.359 1.974 0.013 3.126 0.D15 0.015 0.15 0.05 12.04 3907 lI60 0.40% 88.80% 0.015 3.374 1.988 0.013 3.141 0.Ql5 0.015 0.15 0.05 12.05 3919 lI70 0.40% 89.20% 0.015 3.390 2.001 0.013 3,156 0.Ql5 0.D15 0.15 0.05 12.05 3931 lI80 0.40% 89.60% 0.015 3.405 2.014 0.013 3.172 0.015 0.D15 0.15 0.05 12.06 3943 1190 0.40% 90.00% 0.015 3.420 2.028 0.013 3.187 0.015 0.015 0.15 0.05 12.07 3955 1200 0.40% 90.40% 0.D15 3.435 2.041 0.013 3.202 0.015 0.D15 0.15 0.05 12.08 3967 ]210 0.40% 90.80% 0.D15 3.450 2.055 0.013 3.217 0.015 0.015 0.15 0.05 12.08 3980 1220 0.40% 91.20% 0.D15 3.466 2.068 0.013 3.232 0.D15 0.D15 0.15 0.05 12.09 3992 1230 0.40% 91.60% 0.015 3.481 2.081 0.013 3.247 O.D15 0.D15 0.15 0.05 12.10 4004 1240 0.40% 92.00% 0.Ql5 3.496 2.095 0.013 3.262 0.015 0.D15 0.15 0.05 12.10 . 4016 1250 0.40% 92.40% 0.Ql5 3.5lI 2.108 0.013 3.278 0.D15 0.015 0.16 '0.05 12.11 4028 1260 0.40% 92,80% 0.D15 3.526 2.122 0.013 3.293 0.015 0.D15 I 0.16 0.05 12.12 4040 1270 0.40% 93.20% 0.015 3.542 2.135 0.013 3.308 0.015 0.D15 0.16 0.05 . 12.12 . 4052 1280 0.40% 93.60% 0.015 3.557 2.149 0.013 3.323 0.D15 0,015 0.16 0.05 12.13 4064 1290 0.40% 94.00% 0.015 3.572 2.162 0.013 3338 0.015 0.Ql5 0.16 ,0.05 12.14 . 4076 1300 0.40% 94.40% 0.015 3.587 2.176 0.014 3.353 0.015 0.015 0.16 0.05 12.14 4089 1310 0.40% 94.80% 0.D15 3.602 2.189 0.014 3.369 0.015 0.D15 0.16 0,05 12.15 4101 1320 0.40% 95.20% 0.015 3.6]8 2.203 0.014 3.384 0.D15 0.D15 0.16 0.05 12:16 4113 1330 0.40% 95.60% 0.Ql5 3.633 2.216 0.014 3.399 0.015 0.D15 0.16 0.05 12.16 4125 1340 0.40% 9600% 0.D15 3.648 2.230 0.Oi4 3.414 0.015 0,015 0.16 0.05 12017 4137 1350 0.40% 96.40% 0.015 3.663 2.243 0.014 3.429 0.015 0.015 0.16 0,05 12.17 4149 1360 0.40% 96.80% 0.015 .3.678 2.257 0.014 3.444 0.D15 0.015 0.16 0.05 12.18 4162 1370 0.400/0 97.20% 0.015 3.694 2.271 0.014 3.460 0.015 0.D15 0.i6 0.05 12.19 4174 1380 0.40% 97.60% 0.015 3.709 2.284 0.014 3.475 0.Ql5 0.D15 0.16 0.05 12.19 '4186 1390 0.40% 98.00% 0.D15 3.724 2.298 0.014 3.490 0.D15 0.D15 0.16 0.05 . 12.20 4]98 1400 0.40% 98.40% 0.015 3.739 .2.311 0.014 3.505 0.D15 0.015 0.16 0.05 12.20 4210 . 1410 . 0.40% 98.80% 0.D15 3.754 2.325 0.014 3.520 0.015 0.015. 0.16 0.05 12.21 4223 1420 0.40% 99.20% 0.015 3.770 2.339 0.014 3.535 0.015 0.015 0.16 0.05 12.22 4235 1430 0.40% 99.60% 0.015 3.785 2.352 0.014 3.550 0.015 0.D15 0.16 0.05 12.22 4247 1440 0.40% 100.0% 0.D15 3.800 2.366 0.014 3.566 0.015 0.015 0.16 0.05 12.23 4259 . . EAST CONGREGATION OF JEHOVAH'S WITNESSES DEVELOPED CONDmON (25-year wi No infiltration) Rain GardeD IFul! Buildout I, design area = 5335 sf! total area = 75,900 1.74 (acres) design depth ~ 1.75 I perv10US area = 20000 0.46 impervious area = 55,900 1.28 Total storage per area & depth listed = 9336 cf , , Pervious CN - 86 S - 1.6279 0.2S - 0.3256 Peak Req'd Stora~e = 8909 cf 1m ervious CN ~ 98 S ~ 0.2041 O.2S ~ 0.0408 I Peak Desie:nflovtrate = 0.84 efs total depth rain I Pt= 4.8 (mches) Measured nermeabilitv rate = * in/hr no inmtratioD used to calc dt~ 10 (nain) Design Soil Pei-ineality Rate- 0.00 inlhr storage requirement Tc= 10 (min) ~ 0.33333 percolation rate = 0.00 cf'l File No: 3820 D25-yr.qpw bypass ratc = 0.00 cf, no pre~developed rate used 03-16-09, MJK max outflow rate = 0.00 cfSi 24-Hour SCS Type 1A Design Storm - 25 Year , Incremental Cumulative I Rairifall i mere. Rainfall Aci:unl. Instant Design Req1d Stor'g' Reg'd Stor'g Time distr. Rainfall Increment Rainfall I flowI?-te Vol Ih ~ perc VolIn - pere . ,., f1~wrate mm distr. inches inches cfs cfs c 0 0 0 0 0 0 0 0 0 0 I 0 o . 0 0 10 0.40"10 0.40% . 0.019 0.019 0.000 0.000 0.000 0.000 0.000 I 0.00 0.00 0.00 0 20 0.40% 0.80% 0.019 . 0.038 0.000 0.000 0.000 0.000 0.000 I 0.001 0.00 0.00 0 30 0.40% -1.20% 0.019 , 0.058 0.000 0.000 0.001 0.001 0.001 , 0.01 0.00 1.98 2 I 40 0.40% 1.60% 0.019 0.077 0.000 0.000 0.005 0.004 0.003 I 0.03 0.01 6.39 8 50 0.40% 2.00% 0.019 0.096 0.000 0.000 0.012 0.006 0.005 0.05 0.02 9.86. 18 60 0.40% 2.40% .0.019 '0.115 0.000 0.000 0.020 0.008 0.006 0.06 0.02 12.61 31 70 0.40% 2.80% 0.019 0.134 0.000 '0.000 0.029 0.010 0.007 0.07 0.02 14.83 46 80 .0.40% 3.20% 0.019 0.154 0.000 0.000 0.040 O.Oll 0.008 0.08 0.03 ]6.65 62 90 0.40% 3.60% 0.019 0:173 0.000 0.000 0.052 0.012 0.009 0.09 0.03 18.15 80 100 0.40% 4.00% 0.019 0.192 0.000 0.000 0.064 0.013 0.009 0.10 0.D3 19.41 100 110 0.50% 4.50% 0.024 0.216 0.000 0.000 0.081 0.017 0.012 0.13 . 0.04 25.75 126.. 120 0.50% 5.00% 0.024 0.240 0.000 0.000 0.098 0.017. 0.013 0.J4 0.05 27:12 153 130 0.50% 5.50% 0.024 0.264 0.000 0.000 0.117 0.D18 0.013 0.14 0.05 28.26 . 181 ]40 0.50% 6.00% 0.024 0.288 0.000 0.000 0.135 0.0]9 0.014 0.15 0.05 29.22 210 150 0.50% 6.50%' 0.024 0.312 0.000 0.000 0.155 0.0]9 0.014 0.15 0.05 30.03 240 160 0.50% 7.00% 0.024 0.336 0.000 0.000 0.175 0.020 0.015 0.15 0;05 30.76 271 170 0.60% . 7.60% 0.029. 0.365 0.001 0.001 0.199 0.024 0.018 0.19 . 0.06 38.13 -309 180 0.60% 8.20% 0.029 0.394 0.003 0.002 0.223 0.025 0.019 0.20 0.07 39.39 349 190 0.60% 8.80% .0.029 0422 0.005 . 0.003 0.249 .0.025 0.019 0:20 0.07 40.51 389 200 0.60% 9.40% 0.029 0.451 0.009 0.004 0.274 0.025 0.020 0.21 0.07 41.52 431 210 0.60% 1O.OQ% 0.029 0.480 0.013 0.004 0.300 0.026 0.020 0.21 0.07 42.44 473 220 0.60% 10.60% 0.029 0.509 0.019 0.005 0.326 0.026 0.021 0.22 0.07 43.28 . 516 230 0.70% 11.30% 0034 0.542 0.025 0.007 0.357 6.031 0.024 I 0.26 0.09 '51.45 568 240 0.70% 12.00% 0.034 0.576 0.033 0.008 0.387 0.031 0.025 : 0.26 0.09 52.40 620 250 0.70% 12.70% . 0.034 0.610 0.042 0.009 0.419 0.031 0.025 : 0.27 0.09 53.26. 673 260 0.70% i3.40% 0.D34 0.643 0.052 0.010 0.450 0.031 0.026 I 0.27 0.09 54.05 727 270 0.70% 14.10% 0.D34 0.677- 0.062 0.010 0.481 0.032 0.026 0.27 0.09 54.79 782 280 0.70% 14.80o/~ 0.034 0.710 0.074 O.Oll 0.513 0.032 0.026 0.28 0.09 55.46 838 29b 0.82% 15.62% 0.039 0.756 0.088 0.014 0.550 0.037 0.031 1 0.33 O.ll 65.76 . 903' 300 0.82% 16.44% 0.039 0.789 0.103 0.015 0.588 0.037 0.032 I 0.33 . 0.11. 66.55 970 310 0.82% 17.26% 0.039 0.828 0.119 0.016 0.626 0.D38 0.032 J 0.34 O.ll 67.29 1037 320 0.82% 18.08% 0.039 0.868 0.135 0.017 0.663 0.038 0.032 I 0.34 0.11 67.96 1105 330 0.82% 18.90% 0.039 0.907 0.153 0.D18 0.701 0.038 0.033 I 0.34 0:11 68.59 ll74 340 0.82% 19.72% 0.039 0.947 0:171 0.018 0.739 0.038 0.033 I 0.35 0:12 69.18 ]243 350 0.95% 20.67% 0.046 0.992 0.]94 0.022 0.783 0.044 0.D38 : 0.40 0:13 80.83 1324 360 0.95% 21.62% 0.046 1.038 0.217 0.023 0.828 0.044 0.039 I 0.41 0.14 81.51 1405 370 0.95% 22.57% 0.046 1.083 0.241 0.024 0.872 0.044 0.039 I 0.14 82.14 1488 I 0.4] 380 0.95% 23.52% 0.046 1.129 0.265 0.025 . 0.916 0,044 0.039 I 0.41 0.14 82.73 1570 390 0.95% 24.47% 0.046 1.175 0.291 0.026 0.961 0,045 0.040 i 0.42 0.14 83.29 1654 400 0.95% 25.42% 0.046 1.220 0.3i7 0.026 1.005 0.045 0.040 I 0.42 0.14 83.80 1737 410 1.34% 26.76% 0.064 1.284 0.355 0.D38 1.068 0.063 0.056 i 0.60 0.20 119.02 ]856 420 1.34% 28.10% 0.064 1.349 0.395 0.039 1.131 0.063 0.057 I 0.60 0.20 ll9.90 1976 430 1.34% 29.44% 0.064 1.413 0.436 0.041 1.195 0.063 0.057 10.60 0.20 ]20.71 2097 . 24-Hour SCS Type 1A Design Storm -25 Year IMPERVIOUS Incremental. Cumulative Rainfall lucre. Rainfall Accum. Design Req'd Stor'g Req'd Stor'g Time distr. Rainfall Rainfall floWrate VcilIn-percVolIn.:perc mm distr. , inches cfs c c 440 1,80% 31.24% 0.086 1.500 0.492 0.056 . 1.280 0.085 0.077 0.82 0.27 163.31 2260 450 1.80% 33.04% 0.086 1.586 0.550 0.058 1.365 0.085 0.078 0.82 0.27 16452 2425 460 3.40% 36.44% 0.163 1.749 0.664 0.114 1.526 0.161 0.149 1.57 0.52 313.66 2738 470 5.40% 41.84% 0.259 2.008 0.855 0.191 1.783 0.257 0.239 252 0.84 504.67 3243 480 2.70% 44.54% 0.130 2.-138 0.955 0.099 1.911 0.129 0.121 1.27 OA2. 254.81 3498 490 1.80% 46.34% 0.086 2.224 1.022 0.068 1.997 0.086 0.081 0.85 0.28 170.66 3669 500 i.34% 47.68% 0.064 2.289 1.073 0.051 2.061 0.064 0.060 0.64 0.21 127A2 3796 510 1.34% 49.02% 0.064 2.353 1.124 0.051 2.125 0.064 0.061 0.64 0.21 127.72 3924 520 L34% 50.36% 0.064 2.417 1.176 0.052 2.189 0.064 0.061 0.64 0.21 128,00 4052 530 0.88% 51.24% 0.042 2.460 1.210 0.034 2.231 0.042 0.040 OA2 0.14 84.21 4136 540 0.88% 52.12% 0.042 2.502 1.245 0.034 2.272 0.042 0.040 0.42 0.14 84.32 4220 550 0.88% 53.00% 0.042 2.544 i.280 0.035 2.314 0.042 0.040 0.42 0.14 84.43 4305 560 .0.88% 53.88% 0.042 2.586 1.314 0.Q35 2.356 0.042 0.040 0.42 0.14 84.53 4389 570 0.88% 54.76% 0.042 2.628 1.349 0.035 2.399 0.042 0.040 0.42 0.14 84.63 4474 580 -0.88% 55.64% 0.042 2.671 1.384 - 0.Q35 2.441 0.042 0.040 OA2 ,0.14 84.73 4559 590 0.88% 56.52% 0.042 2.713 1.419 0.Q35 2A83 0,042 0.040 0.42 0.14 84.82 4643 600 0.88% 57.40% 0.042 2.755 1.455 0.035 2.525 0.042 0.040 0.42 0.14 8481 4728 610 0.88% 58.28% 0.042 2.797 1.490 0.036 2.567 0.042 0.040 0.43 0.14 85.00 4813 620 0.88% 59.16% 0.042 2.840 1.526 0.036 2.609 0.042 0.040 0.43 0.i4 85.09 4898 630 0.88% 60.04% 0.042 2.882 1.562 0.036 2.651 .0.042 0.040 0.43 0.14 85.17 4984 640 0.88% 60.92% 0.042 2.924 1.598 0.036 2.693 0.042 0.040 OA3 0.14 85.25 5069 650' 0.72% 61',64% 0.035 . 2.959 1.627 0.029 2.727 0.034 0.033 0.35 0.12 69:81 5139 660 0.72% 62.36% 0.035 2.993 1.657 0.030 2.762 0.034 0.033 0.35 .0.12 69.86 5209 670 O.72~ 63.08% 0.Q35' 3.028 1.686 0.030 2.796 0.034 0.033 0.35 0.12 69.91 5278 680 0.72% 63.80% 0.Q35 3.062 1.716 0.030 2.830 0.034 0.033 0.35 0.12 69.95 5348 690 0.72% 64.52% ' 0.Q35 3.097 1.746 0.030 2.865 0.034 0.033 0.35 0.12 70.00 5418 700 0.72% 65.24% 0.035 3.132 , 1.776 0.030 2,899 0.034 0,033 0.35 0.12 70.05 5488 710 6.72% 65.96% 0.Q35 3166 1.806 0.030 2.934 0,034 0,033 0.35 0,12 70.09 5559 720 0.72% 66.68% 0.Q35 3.201 1.836 0.030 2.968 0.034 0,()33 , , 0.35 0.12 70,14 5629 730 0.72% 67.40% 0.035 3.235 1.866 0.030 3.003 0.034 0,033 0.35 0.12 70.18 5699 740 0.72% 68.12% 0.Q35 3.270 1.896 ' 0,030 3.037 0,034 0.033 0.35 0,12 70.22 5769 750 0.72% 68.84% 0.Q35 3.304 1.926 0.030 3,071 0.034 0.033 0.35 0.12 70.26 5839 760 0.72% 69.56% 0.Q35 3.339 1.956 0.030 3.106 0,034 0.033 0.35 0.12 70.30 5910 770 0.57% 70.13% 0.027 3.366 1.980 0.024 3,133 0.027 0.026 0.28 0.Q9 55.68 5965 780 0.57% 70.70% 0.027 3,394 2.004 0.024 3.160 0.027 0.026 0.28 0.09 55.71 6021 790 0.57% 71.27% 0.027 3.421 2.029 0.024 3.188 0.027 ,0.026 0.28 0.09 55.73 6077 800 0.57% 71.84% 0.027 3,448 ' 2.053 0.024 3.215 0.027 0.026 0.28 0.09 55.75 ,6132 810 0.57% .72.41 % 0.027 3.476 2.077 0.024 3.242 0.027 0.026 0.28 0.09 55.77 6188 820 0.57% 72.98% 0.027 3,503 2.101 0.024 3.270 0.027 0,026 0.28 0.09 55.80 6244 830 0.57% 73.55% 0.027 3.530 2.125 0.024 3.297 0.027 0.026 0.28 0.09 55.82 6300 840 0.57% 74.12% .0.027 3.558 2.150 0.024 3.324 0.027 0.026 0.28 0.09 55.84 6356 850 0.57% 74.69% 0.027 3.585 2,174 0.024 3.351 0,027 0.026 0.28 0.09 55.86 6412 860 0.57% 75.26% . . 0.027 3.612 2.198 0.024 3.379 0.027 0.027 0.28 0.09 55.88 6467' 870. 0.5'7% 75.83% 0.027 3.640 2.223 .0.024 3.406 0.027 0.027 0.28 .0,09 55.90 6523 880 0.57% 76.40% 0.027 3.667 2.247 0.024 3.433 0.027 0.027 0.28 0,09 55.92 6579 890 0.50% 76.90% 0.024 3,691 2.268 0.021 3.457 0.024 0.023 0,25 0.08 49.07 6628 900 0.50% 77.40% 0.024 3.715 2.290 0.021 3.481 . 0.024 0.023 0.25 0:08 ' 49.09 6677 910 0.50% 77.90% 0.024 3.739 2.311 0.021 3.505 0.024 0.023 0.25 0.08 49,10 6727 920 0.50% 78.40% 0.024 3.763 2.333 0.022 3.529 0.024 .0.023 0.25 0.08 49.12 6776 930 0.50% 78.90% 0.024 3.787 2.354 0.022 3.553 0.024 0.023' 0.25 0.08 49.13 6825 940 0.50% 79.40% 0.024 3.81 I 2.376 0.022 3.577 0:024 0.023 0.25 0.08 49.14 6874 950 0.50% 79.90% 0.024 3.835 2.398 0.022 3,601 0.024 0.023 0.25 0.08 49.16 6923 960 0.50% 80.40% 0.024 3.859 2.419 0.022 3.625 0.024 0.023 0.25 0.08 49.17 6972 970 0.50% 80;90% 0.024 3.883 2.441 0.022 3.649 0.024 0.023 0.25 0.08 49.18 7021. 980 0.50% 81.40% 0,024 3.907 2.462 0.022 3.673 0.024 0,023 0.25 0.08 49.20 7071 990 0.50% 81.90% 0.024 3.931 2.484 0.022 3.696 0,024 0.023 0.25 0.08 49.21 7120 1000 0.50% 82.40% 0.024 3.955 2.5'06 0,022 3.720 0.024 0.023 0.25 . 0.08 49.22 7169 1010 0.40% 82.80% 0.019 3.974 2.523 0.017 3,740 0.019 0.019 0.20 0.07 39.39 7208 1020 0,40% 83.20% 0.019 3.994 2.541 0.017 3.759 0.019 0.019 0.20 0.07 39.40 7248 1030 0040% 83.60% 0.019 4.013 2.558 0.017 3.778 0.019 0.019 0.20 0.07 39.40 7287 1040 0.40% ~4.00% 0.019 4.032 2575 0.017 3.797 0.019 0019 0,20 0.07 39,41 7327 1050 0.40% 84.40% 0.019 4.051 2.593 0.017 3.816 0.019 0.019 0.20 0.07 39.42 7366 , . J . . 24-Hour SCS Type IA Design Storm - 25 Year Incremental Cumulative Rainfall Incre. Rainfall Accum. Design Req'd Stor'g Req'd Stor'g Time distr. Ririnfa11 Increment 'Rainfall flowrate Vol In - perc Volln - perc, .mm distr. inches inches efs c c 1060 0040% 84.80% 0.019 4.070 2,610 0.017 . 3.835 0.019 0.019 0.20 0.07 39.43 7406 1070 0040% 85.20% 0.019 4.090 2.628 0.017 3.854 0.019 0.019 0,20 0.07 39.44 7445 1080 OAO% 85.60% 0.019 4.109 2.645' 0.017 3.874 0.019 0.019 0.20 0.07 39.44 7484 1090 OAO% 86.00% 0.019 4.128 . 2.663 0.017 .3.893 0.019 0.019 0.20 0.07 39.45 7524 1100 0040% 86.40% 0.019 4.147 2.680 0.017 3.912 0.019 0.019 0.20 0.07 39.46 7563 1110 0.40% 86.80% 0.019 4.166 2.698 0.017 3.931 0.019 0.019 0.20 0.07 39.46 ' 7603 1120 OAO% 87.20% 0,019 4.186 2.715 o.i)] 8 3.950 0.019 0,019 0.20 0.07 39.47 7642 1130 OAO% 87.60% 0.019 4.205 2.733 . 0.018 3.969 0.019 0.019 0.20 0.07 39.48 7682 1140 0040% 88.00% 0,019 4.224 2.750 0.018 3.989 0.019 0.019 0.20 0.07 39.49 7721 1150 OAO% 88.40% 0.019 4.243 2.768 0.018 4.008 0.019 0.019 0.20 0.07 39.49 7761 1160 OAO% 88.80% 0.019 4.262 2.785 0.018 4.027 0.019 0.019 0.20 0.07 39.50 7800 1170 OAO% 89.20% 0.019 4.282 2.803 0.018 4.046 0.019 0.019 0.20 0.07 39.51 7840 1180 0.40% 89.60% 0.019 4.301 2.820 0.018 4.065 0.019 0.019 0.20 0.07 39.51 7879 1190 OAO% 90.00% 0.019 4.320 2.838 0.018 4.084 0.019 0,019 0.20 0.07 39.52 .7919 1200 OAO% 90.40% 0.019 4.339 2.855 0.018 4.104 0.019 0.019 0.20 0.07 39.53 7958 1210 OAO% 90.80% 0.019 4.358 2.873 0.018 4.123 0.019 0.019 0.20 0.07 39.53 7998 1220 0040% 91.20% . 0.019 4.378 2.891 0.018 4.142 0.019. 0.019 0.20 0.07 39.54 8037 1230 . 0040% 91.60% 0.019 4.397 2.908 0.018 4.161. 0.019 0.019 0.20 0.07 39.55 8077 1240 OAO% 92.00% 0.019 4.416 2.926 0.D18 4.180 0.019 0.019 0.20 0.07 39.55 8116 1250 0040% 92.40% 0.019 4.435 2.944 0.018 4.199 0.019 0.019 0.20 0.07 39.56 8156 1260 OAO% 92.80% 0:019 4.454 2.961 0.D18 4.219 0.019 0.019 0.20 0.07 39.57 8196 1270 0.40%' 93.20% 0.019 4.474 2.979 0.018 4.238 0.019 0.019 0.20 0.07 39.57 8235 1280 0040% 93.60% 0.019 4.493 2.997 0.018 4.257 0.019 0.019 0.20 0.07 39.58 .8275 1290 0.40% 94.00"10 0.019 4.512 3.014 0.0]8 4.276 0.019 0.019 0.20 0.07 39.58 8314 1300 0040% 94.40% 0.019 4.53] 3.032 0.D18 4.295 0.019 0.019 0.20 0.07 39.59 8354 1310 OAO% 94.80% 0.019 4.550 3.050 0.D18 4.314 0.0]9 0.019 0.20 0.07 39.60 8393 1320 0.40% 95.20% 0.019 4.570 3.067 O.oJ8 4.334 0.019 0.019 0.20 0.07 39.60 8433' 1330 0040% 95.60"/. 0.019 4,589 3.085 0.018 4.353 0.019 0.019 0.20 0.07 39.61 8473 1340 OAO% 96.00% 0.019 4.608 3.103 0.018 4.372 0.019 0.019 0.20 0.07 39.61 8512 1350 0.40% .96.40% 0.019 4.627 3.i21 0.018 4.391 0.019 0.019 0.20 0.07 39.62 8552 1360 0.40% 96.80% 0.019 4.646 3.138 0.D18 4.410' 0.019 0.019 0.20 0.07 39.62 8592 1370 0.40% 97.20% 0.019. 4.666 3.156 0.018 4.429 0.019 0.019 0.20 0.07 39.63 8631 1380 OAO% 97.60% 0.019 4.685 3.174 0.018 4.448 0.019 0.019 0.20 0.07 39.64 8671 1390 OAO% 98.00% 0.019 4.704 3.192 0.018 4.468 0.019 0.019 0.20 0.07 39.M 8710 1400 0040%" 98.40% 0.019 4.723 3.210 0.018 4.487 0.019 0.019 0.20 0.07 39.65 8750 1410 0.40% 98.80% 0.019 4.742 3.227 0.D18 4.506. 0.019 0.019 0.20 0.07 39.65 8790 1420 OAO% 99.20% 0.019 4.762 3.245 0.D18 .. 4.525 0.019 0:019 0.20 0.07 39.66 8829 1430 0040% .99.60% 0.019 4.781 3.263 0.018 4.544 0.019 0.019. 0.20 0.07 39.66 8869 1440 0.40% 100.0% 0.019. 4.800 3.281 0.Q18 4.563 0.019 0.019 0.20 0.07 39.67 8909 . . " . . EAST CONGREGATION OF JEHOVAH'S WITNESSES DEVELOPED CONDITION (25-year wi Infiltratiori Rain Garden bottom Width - 48.5 ft I FnIl Bnildont bottom 16n th = 93.5 ft total area = 75,900 1.74 (acres) bottom area (infiltration area) - 4535 sf pervious area = 20000 0.46 . I I impe?vious area = 55,900 1.28 Peak Req'd Sto'ra2e = 6277 cf Pervious eN = 86 S ~ 1.6279 O.2S ~ 0.3256 Peak Desi2D o.olatc = 0.84 cfs 1m ous CN ~ 98 S ~ 0.2041 0.2S ~ 0.0408 I drawdown time = 55 hr total depth rain I Pt~ 4.8 (inches) .SCS minimurn'.permeabihty rate = 0.60 in/hr dt~ 10 (min) Design Soil Perm.eality. Rate 0.3000 in/hr scs min/2 Tc= ]0 (min) ~ 0.33333 percolation rate == 0.0315 cfs using bottom area only File No: 3820 D25i-yr.qpw bypass rate = 0.0000 efs no pre-developed rate used 03-16-09, MJK max outflow rate =, 0.0315 cfs 24:-Hour SCS Type lA Design Storm ~ 25 Year PERVIOUS IMPERVIOUS Incremental Cumulative Rainfall mere. Rainfall ACCUffi. Accum. Incrern. Acci.i.i:n. Inerem; Req'd Stor'g ReiI'd Stor'g Time distr. Rainfali Increment Rainfall Runoff Runoff Runoff Runoff Vol In -pere Vallo - pere min distr. inches inches inches inches inches incheS c . c 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10 0.40% 0.40% 0.019 0.019 0.000 0.000 0.000 0.000 0.000 0.00 0.00 0.00 0 20 0.40% 0.80% 0.(JI9 0.038 0.000 0.000 0.000 0.000 0.000 0.00 0.00 0.00 0 30 0.40% 1.20% 0.019 0.058 0.000 0.000 0.001 0.001 0.001 0.01 0.00 0.00 0 40 0.40% 1.60% 0.019 0.077 0.000 0.000 0.005 0.004 ~0.003 0.03 0.01 0.00 O. 50 0.40% . 2.00% 0.019 0.096 0.000 0,000 0.012 0.006 0.005 0.05 0.02 ~ 0.00 0 60 0.40% 2.40% 0.019 0.115 0.000 0.000 0.020 0.008 0.006 0.06 J. 0.02 0.00 O. 70 0.40% 2.80% 0.019 0.134 0.000.. 0.000 0.029 0.010 0.007 0.07 0.02 0.00 0 80 0.40% 3.20% 0.019 0.154 0.000 0.000 0.040 0.011 0.008 0.08 0,03 0.00 0 90 0.40% 3.60% 0.019 0.173 0.000 0.000 0.052 0.012 0,009 0.09 0.03 0.00 0 100 0.40% 4.00% 0.019 0.192 0,000 0.000 0.064 0.013 0.009 0.10 0.03 0.52 ]' 110 0.50%. 4.50% 0.024 0.216 0.000 0.000 0.081 0.017 0.012 ; 0.13 0.04 6.85 7 120 0.50% 5.00% 0.024 0.240 0.000 0.000 0.Q98 0.017 0.013 iO.14 0.05 8.22 16 130 050% 550% 0.024 0.264 0.000 0.000 0.117 0.018 0.013 I 0.14 0.05 ,9.36 . 25 140 0.50% 6.00% 0.024 0.288 0.000 0.000 0.135 0.019 0.014 I 0.15 0.05 10.32 35 . 150 0.50% 6.50% 0.024 0.312 0.000 0.000 0.155 0.019 0.014 0.15 0.05 11.13 46 160 050% 7.00% 0.024 0.336 0.000 0.000 0.175 0.020 0.015 ., 0.15 0.05 11.87 58 170 0.60% 7.60% 0.029 0.365 0.001 0.001 0.199 0.024 0.018 i 0.19 0,06 19.24 78 ]80 0.60% 8.20% 0.029 0.394 0.003 0.002 0.223 0.025 0.019 10.20 0.07 20.49 98 190 0.60% 8.80% 0.029 0.422 0.005 0.003 0.249 0.025 0,019 0.20 0.07 21.62 120 200 0.60% 9.40% 0.029 0.45] 0.009 0.004 . b.274 0.025 .0.020 10.21 0.07 22.63 142 210 0.60% 10.00% .0.029 0.480 0.oi3 0.004 0.300 0.026 0.020 I 0.21 0.07 23.55 166 220 0.60% 10.60% 0.029 0.509 0.019 0.005 0.326 0,026 0.021 I 0.22 0.07 24.38 190 230 0.70% 11.30% . 0.034 0.542 0.G25 0.007 0.357 0.031 0.024 I 0.26 0.09 32.56 223 .240 0.70% 12.00% 0,034 0.576 0.033 0.008 0.387 0.031 0.025 10.26 0.09 33.50 256 250 0.70% 12.70% 0.034 0.610 0.042 0.009 0.419 0.031 0.025 0.27 0.09 34.37 291 260 0.70% 13 .40% 0.034 . 0643 0.052 0.010 0.450 0.031 0:026 .; 0.27 0.09 35.16 326 270 0.70% 14.10% 0.034 0.677 0.062 0.010 ( 0.481 0.032 0.026 i 0.27 0.09 35.89 362 280 0.70% 14.80% 0.034' 0,710 0.074 0.011 0.513 0.032 0.026 10.28 0.09 36.57 398 290 0.82% 15.62%. 0:039 0.750 0.088 0.014 0.550' 0.037 0.031 0.33 0.11 . 46.87 '445 . 300 0.82% 16.44% 0.039 0.789 0.103 0.015 0.588 . 0.037 0,032 0.33 0.11 . 47.66 493 310 .0.82% 17.26% 0.039 0.828 0.119 0.016 0626 0.038 0.032 0.34 0.11 48.39 '54] 320 0.82% 18.08% 0.039 0.868 0;135 0.017 0.663 0,038 0.032 1'034 0.11 49.07 590 I' 330 0.82% 18.90% 0.039 0.907 0.153 0.018 0.701 0,038 0.033 10.34 0.11 49.70 640 340 0.82% 19.72% 0.039 0.947 0.171 0.018 0.739 0.038 0.033 0.35 0.12 50.28 690' 350 0.95% 20.67% 0.046 0.992 0.194 0.022 0.783 0.044 0.038 10.40 0.13 61.93 752 360 0.95% 21.62% 0.046 1.038 0.217 0.023 0.828 0.044 0.039 10.4] 0.14 62.62 815 '370 0.95% 22.57% 0.046 1.083 0.241 0.024 0.872 b.044 0.039 ! 041 0.14 63.25 878 380 0:95% 23.52% 0.046 1.129 0.265 0.025 .0.916 0.044 0.039 10.41 0.14 63:84 942 390 0.95% 24.47% 0.046 1.175 0.291 0.026 0.961 0.045 0.040 10.42 0.14 64.39 1006 400 0.95% 25.42% 0.046 1.220 0.317 0.026 1.005 0.045 0.040 10.42 0.14 64.91 1071 410 1.34% 26.76% 0.064 '1.284 0.355 0.038 1.068 0.063 0.056 0.60 0.20 100.12 1171 420 134% 28.10% 0.064 1.349 0.395 0.039 . 1.131 0.063 0.057 !0.60 0.20 101.00 1272 430 1.34% 29.44% 0.064 1.413 0.436 0.041 1.195 0.063 0.057 : 0.60 0.20 101.81. 1374 , ~ , . . . " 2~Hour SCS Type lA Design Storm ~'25 Year PERVIOUS Incremental Cumulative Rainfall mere. Rainfull Accum. Req'd Stor'g Req'd Stor'g Time distr. Rainfall Increment Rainfall Vol In - pere Vol In- pere min distr. inches inches e 440 1.80% 31.24% 0,086 1.500 0.492 0.056 1.280 0.085 0,077 0,82 0,27 144.41 1518 450 1.80% 33.04% 0.086 1.586 0.550 0,058 1.365 0,085 0,078 0.82 0.27 145.63 1664 460 3.40% 36.44% 0.163 1.749 0.664 0.114 1.526 0.161 0.149 1.57 0.52 294.77 1959 470 5.40% 41.84% 0.259 2.008 0,855 0,191 1.783 0.257 0.239 2.52 0.84 485.77 2445 480 2.70% 44.54% 0.130 2.i38 0.955 0.099 1.911 0.129 0.121 I 1.27 0.42 235.92 2681 490 1.80% 4634% 0.086 2.224 1.022 0.068 1.997 0.086 0.081 , 0.85 0.28 151.76 2832 500 1.34% . 47.68% 0.064 2.289 1.073 0.051 2.061 0.064 0.060 0.64 0.21 108.53 294] 510 1.34% 49.02% 0.064 2.353 1.124 0.051 2.125 0.064 0.061 0.64 0.21 108:82 3050 520 1.34% 50.36% . 0.064 2.417 1.176 0.052 2.189 0,064 0.06] 0.64 0.2] 109.11 3159 530 0.88% 51.24% 0.042 2.460 1.210 0.034 2.23] 0.042 0.040 0.42 0.14 65.31 3224 540 0.88% 52.12% 0.042 2.502 1.245 0,034 2.272 0.042 0.040 0.42 0.14 65,42 3290 550 0:88% 53.00% 0.042 2.544 1.280 0.035 2.314 0.042 0.040 0.42 0.14 65.53 3355 560 0.88% 53.88% 0.042 2.586 1.314 0.035 2.356 0.042 0.040 0.42 0.14 65.64 3421 570 0.88% 54.76% 0.042 2.628 1.349 0.035 2399 0.042 0.040 0.42 0.14 65.74 3486 580 0.88% 55.64% 0.042 2.671 1.384 0035 2.441 0.042 0.040 0.42 0.14 65.83 3552 590 0.88% 56.52% 0.042 2.713 1.419 . 0,035 2.483 0.042 0,040 0.42 0.14 65.93 3618 600 0.88% 57.40% 0.042 2.755 1.455 0.035 2.525 0.042 0.040 0.42 0.14 66.02 3684 610 0.88% 58.28% 0.042' 2.797 1.490 0.036 2.567 0.042 0.040 0.43 0.14 66.1] 3750 620 0.88% 59.16% 0.042 2.840 1.526 0.036 2.609 0.042. 0.040 0.43 0.14 66.19 3817 630 0.88% 60.04% 0.042 2.882 1.562 0.036 2.65] 0.042 0.040 0.43 0.14 66.27 3883 .> 640 0.88% 60.92% 0.042 2.924 1.598 0.036 2.693 0.042 0.040 0.43 0.14 66.35 '3949 650 ' 0.72% 6i64% 0.035 2.959 1.627 0.029 2.727 0.034 0.033 0.35 0.12 50.91 4000 660 0.72% 62.36% 0.035 2,993 1.657 0.030 2.762 0.034 0.033 0.35 0.12 50.96 4051 670 0.72% 63.08% 0.035 3.028 1.686 0.030 2.796 0.034 0,033 0.35 0.12 51.01 4102 680 0.72% 63.80% 0,035 3.062 1.716 0,030 2.830 0.034 0.033 0.35 0.12 51.06 4153 690 0.72% 64,52% 0.035 3.097 1.746 0.030 2.865 0,034 0.033 0.35 0.12 51.11 4204 700 0.72% 65.24% 0.035 3.132 1.776 0,030 "2.899 0.034 0.033 0.35 0.12 5U5 4255 710 0.72% 65.96% 0.035 3,]66 1.806 0.030 2.934 0.034 0,033 0.35 0.12 51.20 4307 720 0.72% 66.68% 0.035 3.201 1.836 0,030 '2.968 0.034 0.033 0.35 0.12 51.24 4358 730 0.72% 67.40% 0.035 3.235 1.866 0.030 3.003 0.034 0.033 0.35 0.12 51.28 4409 740 0.72% 68.12% 0.035 3.270 1.896 0.030 3.037 0.034 0.033 0.35 0.12 51.33 4460 750 '. 0.72% 68j~4% 0.035 3.304 1.926 0.030 3.071 0.034 0.033 0.35 0.12 51.37 . 4512 760 0.72% 69.56%, 0.035 3.339 1.956 0.030 3.106 0.034 0.033 0.35 0.12 51.41 4563 770 0.57% 70.13% 0.027 3.366 1.980 0.024 3.133 0.027 0.026 0.28 0.09 36.79 4600 780 0.57% 70.70% 0.027 3.394 2.004 0.024 3.160 0.027 0.026 0.28 0.09 36.81 4637 790 0.57% 71.27% 0.027 3.42] 2.029 0.024 3.188 0.027 0.026 I 0.28 0,09 ' 36.83 .4674 800 0.57% 71.8~% 0.027 3.448 2,053 0,024 3.215 0.027 0.026 1'0.28 0.09 ' 36.86 4710 810 0.57% 72.41% 0.027 3.476 2.077 0,024 3.242 0.027 _ 0.026 I 0.28 0.09 36.88 4747 820 0.57% 72.98% 0.027 3.503 2,101 0.024 3.270 0.027 0.026 0.28 0.09 36.90 4784 830 0.57% 73.55% Om7 3.530 2.125 0.024 3.297 0.027 0.026 0.28 . 0.09 36,92 4821 840 0.57% 74.12% 0.027 3,558 2.]50 0,024 3.324 0.027 0.026 I 0.28 0.09 36.95 4858 850 0.57% 74.69% 0.027 3.585 2.174 0.024 3.351 0.027 0.026 I 0.28 0.09 36.97 4895 860 0.57% 75.26% 0,027 3.6]2 2,198 0.024 3.379 0.027 ' 0.027 , 0..09 36.99 4932 1028 870 0.5'7% 75.83% 0.027 3.640 2.223 0,024 30406 OWl 0.027 0.28 0.09 37,01 4969 880 0.57% 76.40% 0.027 3.667 2.247 0,024 3.433 0.027 0.027 0.28 0.09 37,03. 5006 890 0.50% 76.90% 0.024 3.691 2.268 0.02] 3.457 0.024 , 0.023 0.25 0.08 30.18 5036 900 0.50% 77.40% '. 0.024 . 3.7]5 2.290 . o:o:n 3048] . '0.024 ' 0,023 0.25 0.08 '30.]9 5066 . 910 0.50% 77.90%' 0.024 3.739 2.311 0.021 3.505 0.024 0.023 0.25 0.08 30.21 5097 920 0.50% 78.40% 0.024 3.763 2.333 0.022 3.529 0.024 0.023 0.25 0.08 30.22 .5127 930 050% 78.90% 0.024 3.787 2.354 0,022 3.553 . 0.024 0.023 , 0.25 0.08 30.23 5157 940 0.50% 79.40% 0.024 3.8]] 2.376 0.022 3.577 0.024 0.023 I 0.25 0.08 30.25 5187 950 0.50% 79.90% 0.024 3.835 2.398 0.022 3.601 0.024 0.023 1 0.25 0.08 30.26 5218 960 0.50% 80.40% 0.024 3.859 2.419 0.022 3.625 0.024 0.023 I 0.25 0.08 30.28 5248 970 0.50% 80,90% 0.024 3.883 2.441 0.022 3.649 0.024 0.023 ' 0.25 0.08 30.29 5278 3.907 , 980 0.50% 81,40% '0.024 2.462 0.022 3.673 0.024 0.023 , 0.25 0.08 30.30 5309 990 0.50% 8L90% 0.024 3,931 2.484 0.022 30696 . 0.024 0.023 , 0.08 30.32 5339 I 0.25 1000 0.50% .82.40% . 0.024 3.955 2.506 0.022 3.720 0.024 0.023 ,0.25 0.08 3q.33 5369 1010 0,40"10 82.80% 0.019 3.974 2.523 0.0]7 3.740 0.019 0.0]9 10.20 0:07 20.49 5390 1020 0.40% 83.20% . 0.0]9 3.994 2.541 0.0]7 3.759 0.019 0.019 . ~ 0.20 0.07 20.50 5410 ]030 0.40% 83.60% 0.019 4.013 2.558 0.017 3.778 0.019 0.Oi9 ! 0.20 0.07 20.51 5431 1040 0.40% 84.00% 0.019 4.032 3.797 0.019 0.019 I 2.575 0.0]7 10.20 0.07 20.52 5451 1050 0.40% 84.40% 0.019 4.051 2.593 0.017 3.816 0.019 0.0]9 '0.20 0.07 20.53 5472 ) . . , 24-Hour SCS Type lADesign Storm - 25 Year Incremental Cumulative Rainfall mcre. RIDnfall ACClUll. . Req'd Stor'g ReiI'd Stor'g Time distr. Rainfall Increment RID.fall Vol In - pere 01 In':' pere mm distr. inches inches e 1060 0.40% 84.80% 0.019 4.070 2.610 0.Oi7 3.835 0.019 0.019 0.20 0.07 20.53 5492 1070 0.40% 85.20% 0.019 4.090 2.628 0.017 3.854 0.019 0.019 0.20 0.07 20.54 5513 1080 0.40% 85.60% . 0.019 4.109 2.645 0.017 3.874 0.019 0.019 0.20 0.Q7 20.55 5533 1090 0.40% 86.00% 0.019 4.128 2.663 0.017 3.893 0.019 0.019 , 0.20 0.07 20.56 .5554 1100 0.40% 86.40% 0.019 4.147 2.680 0.017 3.912 0.019 0.019 0.20 0.07 20.56 5574 1110 0.40% 86.80% 0.019 4.166 2.698 0.017 3.931 0.019 0.019 0.20 0.Q7 20.57 5595 1120 0.40% 87.20% 0.019 4.186 2.715 0.018 3.950 0.019 0.019 0.20 0.07 20.58 5616 1130 0.40% 87.60% 0.Oi9 4.205 2.733 0.018 3.969 0.019 0.019 0.20 0.07 20.58 5636 1140 0.40% 88.00% 0.019 4.224 2.750 0.018 3.989 0.019 0.019 0.20 0.07 20.59 5657 1150 0.40% 88.40% 0.019 4.243 2.768 0.018 4.008 0.019 0.019 0.20 0.Q7 20.60 5677 1160 0.40% 88.80% 0.019 4.262 2.785 0.Q18 4.027 0.019 0.019 0.20 0.D7 20.61 5698 1170 0.40"10 89.20% 0.019 4.282 2.803 0.018 4.046 0.019 0.019. 0.20 0.D7 20.61 5719 1180 0.40% 89.60% 0.019 4.301' 2.820 0.018 4.065 0.019 . 0.019 0.20 0.07 20.62 5739 1190 0.40% 90.00% 0.019 4.320 2.838 0.Q18 4.084 0.019 0.019 0.20 0.Q7 20.63 5766 1200 0.40% 90.40% 0.019 4.339 2.855 0.018 4.104 0.019 0.019 0.20 0.07 20.63 5780 1210 0.40% 90.80% 0.019 4.358 2.873 0.Q18 4.123 0.019 0.019 0.20 0.07 20.64 5801 1220 0.40% 91.20% 0.019 4.378 2.89] 0.0]8 4.142 0.019 0.019 0.20 0.07 20.65 5822 1236 0.40% 91.60% 0.019 4.397. 2.908 0.018 4.161 0.019 0.019 0.20 0.07 20.65 5842 1240 0.400/0 92.00% 0.019. 4.416 2.926 0.018 4.180 0.019 6.019 0.20 0.07 20.66 5863 1250 0.40% 92.40% 0.019 4.435 2.944 0.018 4.199 0.019 0.019 0.20 0.07 20.66 5884 1260 0.40% 92,80% 0.019 4.454 2.961 0.018 4.219 6.019 0.019 0.20 0.Q7 20.67 5904 ]270 0.40% 93.20% 0.019 4.474 2.979 0.Q18 4.238 0.019 0.0]9 0.20 0.07 20.68 5925 ]280 0.40% 93.60% 0.0]9 4.493 2.997 0.Q18 4.257 0.0]9 0.0]9 0.20 0.Q7 20.68 5946 ]290 0.40% 94.00% 0.019 4.512 3.014 0.Q18 4.276 0.019 0.0]9 0.20 0.Q7 20.69 5966 1300' 0.40% 94.40% 0.019 4.531 3.032 0.018 4.295 0.019 0.019 0.20 0.Q7 20.70 5987 1310 0.40% 94.80% 0.019 4.550 3.050 0.018 4.3]4 0.019 0.019 i 0.20 0.07 20.70 6008 1320 0.40% 95.20% 0.019 4.570 3.067 0.Q18 4.334 0.019 0.019 0.20 0.07 20.71 . 6029 1330 0.40% .95.60% 0.019 4.589 3.085 0.018 4.353 0.019 0.019 0.20 0.07 20.71 6049 1340 0.40% '96.00% 0.019 4.608 .3.103 0.018 4.372 0.019 0.019 0.20 0.07 20.72 6070 1350 0.40% 96.40% 0.Ol9 4.627 3.121 0.Q18 4.391 0.019 0.019 0.26 0.07 20.72 6091 1360 0.40% 96.80% 0.019 4.649 3.i38 0.Q18 4.410 0.019 0.019 , 0.20 0.07 20.73 611l . . 1370 0.400/0 97.20% 0.019 4.666 3.156. 0.Ol8 4.429 0.019 0.019 0.20 0.Q7 20.74 6132 1380 0.40% 97.60% 0.019 4.685 3.174 0.018 4.448 0.019 0.019 0.20 0.Q7 20.74. 6153 ]390 0.40% 98.00% 0.019 4.704 3.192 0.Q18. 4.468 0.019 0.019 0.20 0.07 20.75 6174 ]400 0.40% .98.40% 0.()]9 4.723 3.210 0.018 4.487 0.019 0.019 0.20 0.07 20.75 6194 1410 0.40% 98.80% 0.019 4.742 3.227 .0.Q18 4.506 0.019 0.0]9 0.20 0.Q7 20.76 6215 1420 0.40% 99.20% 0.019 4.762 3.245 0.018 4.525 0.019 0.0]9 0.20 0.07 .20.76 6236 1430 0.40% 99.60% 0.019 4.781 3.263 0.Q18 4.544 0.019 0.0]9 0.20 0.Q7 20.77 6257 ]440 0.40% 100.0% 0.019 4.800 3.28] 0.018 4.563 0.619 0.019 0.20 0.07 20.77 6277 , J . . .' , ! HYDROLOGIC CALCULATIONS I . . ( FOR CONvEYANCE SYSTEM SIZING Rational Method . i ;- f- ,L L, ;.; , I f- I, , j l. ~ , , i' I I f- I , , I H- r 1+., j ," I I 1+1= '" - .... + , -I " , .It q.~ + ~~ 1 i ~~r -:l .~ . .n , - 1-rIi=H;. .e , , I , ~ I , I I , i I :+ n - -I - ;-, , , POAGE ENGINEERING & SURVEYING, INC. P.O. Box 2527. Eugene, OR 97402~0152 (990 Obie Street) (541) 485-4505. FAX (54 I) 485.5624 , I !.:t' ,-' " I ,,+ H- I $t. _i ',=p+ -+++H, -1 ~F~: :IT r++-.L '+-,"L , " '-t-t I .-++ ~t--f ,~ I I I I l I I I I. I I I I I c~'" I .1 .~~ ~ '4' ~f- i +t " .I _ I T ~ ,9; .,1 -:H"::t> 4r I t 'jzi ~ I ~J5." Lr ~ -!-- uf.' !ir ~H-I-- ?flv. I , , r '~-'- !"t~ - -, '1:.' 'j I! I ,\ L " PROJECT &. sf Ca....f/:Jak~... -:YltJl-f BY vVlr<- DATE:5 /tfo!o'f " I r- '- , , ~ , -I , , ~ , , 1';;' I I JOB NO. 38&0 PAGE / OF ~ .;, . . Pipe 1 Worksheet for Circular Channel Project Description Project File Worksheet Flow, Element Method Solve For f:\projects\haestad\fiowmaster files\3820stm 1. fm2 Pipe 1 Circular Channel Manning's Formula Channel Depth Input Data Mannings Coefficient Channel.8lope Diameter Discharge 0,011 0,007000 flIft 6.00 in 0,50 cfs Results Depth Flow Area Wetted Perimeter Top Width Critical Depth Percent Full Critical Slope . Velocity Velocity Head Specific Energy Froude Number Maximum Discharge Full Flow Capacity Full Flow Slope Flow is subcriticaL 0.37 ft 0,16 ft' 1,04 ft OA4 ft 0,36 ft 7426 0,007516 flit! . 320 flIs 0.16 ft 0.53 ft 0.94 0.60 cfs 0.55 cfs 0.005686 ftIft 03/16/09 10:46;54 AM I -I I . Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 ~203) 755-1666 FlowMaster v5.13 Page 1.of 1. . . ------.-~-Jo-~~Bed--. . E;t.'SA JalSeVII~Ol:::1 I S99~ . ~-eG)---aOL~O-.l-8~^.lnqJaleM -pe.oC:f_ap!S'>lOOJ8,Lf;_.~lpOljlaJto.l_p.elS-ael=l ~. . I. 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DoWNsTREAM PUBLIC SYSTEMI . , CAPACITY CHECK Santa Barbara Urbilli Hydrograph Method Spreadsheets & Supporting Documentat,ion , ~. . . . . ~ EAST CONGREGATION OF mHOV AFI'S WITNESSES DEVELOPED CONDITION (100-year wi No infiltration) Rain Garden IFull Buildout " avg area = 6491 sfl total area = 75,900 1.74.(acres) avg depth = 1.5 pervious area = 20000 0.46 I impervious area = . 55,900 1.28 Total storage per avg area & depth-listed = 9736 cf I Pervious CN - 86 S - 1.6279 02S - 0.3256 I 9736 cf Peak Req'd Storaee == hn MOllS eN = 98 S ~ 0.2041 0.2S ~ 0.0408 ' I Peak Desi~ flowrate = 0.92 cfs total depth rain I Pt~ 5.2 (inches) MeasUred nermeabili1v rate = * inIhr no infiltration used to calc dt~ 10 (min) Design Soil Permeality Rate- 0.00 inlhr storage requi.rement Tc= 10 (min) ~ 0.33333 percolation rate = 0.00 cfsl File No: 3820 Dl OO-yr.qpw bypass rate = I no pre-devdoped rate Used O.O~ cfs, 03-16-09, MJK max outflow rate = 0.00 cf, I 1 24-Hour SCS Type 1 A Design Storm - 100 Year PERVIOUS IMPERVIOUS i Incremental Cumulative Rainfall mere. Rainfall Accum. Accwn. Inerem. Accum. Increm. Total mstant Design Req'd Stor'g Req'd Stor'g Time distr. Rainfall Increment Runoff Runoff Runoff Runoff Runoff I . Rainfall fl9wrate flowrate Vol In - pefC Vol In -perc min mstr. incheS incheS inches inches incheS inches inches cf, cfs c 0 0 -':"'0 0 0 0 0 0 0 0 0 0 0 0 10 0.40% 0.40% 0.021' 0.021 0.000 0.000 0.000 0.000 0.000 0.00 0.00 0.00 0 20 0.40% 0.80% 0.021 0.042 0.000 0.000 0.000 0.000 0.000 0.00 0.00 0.00 0 30 0.40% 1.20% 0.021 0,062 0.000 0.000 0.002 0,002 0.002 0,02 0.01 3.20 3 40 0.40% 1.60% 0.021 0,083 O~OOO 0.000 0.007 0.005 0.004 0.04 0.0] 8.11 11' 50 0.40% 2.00% 0.021 0,]04 0.000 0.000 0.015 0.008 0.006 0.06 0.02 11,88 23 '60 0.40% 2.40% 0.021 0.125 0.000 ,0.000 '0.024 0.010 0.007 0.07 0.02 14,83 38 70 0.40% 2.80% 0.021 0.146 0.000 0.000 0.036 0.011 0.008 0.09 0.03 17.18 55 80 0.40% 3.20% 0.021 0.166 ' 0.000 0.000 0.048 0.012 0.009 I OolO 0.03 19.09 74 90 0.40% 3.60% 0.021 0.187 0.000 0.000 0,061 0.013 0,010 I. OolO 0.03 20.65 95 I 100 0.40% 4.00% 0.02i 0.208 0.000 0,000 0.075 0.014 0.010 I 0.11 . 0.04 21.96 117 110 0.50% 4.50% 0.026 0.234 0.000 0.000 0.094 0.019 0.014 0.14 0.05 28.97 146 120 0.50% 5.00% '0.026 0.260 0.000 0.000 0.114 0.020 0.014 0.15 0.05 30.37 176 130 0.50% 5.50% 0.026 0.286 0.000 0.000 0.134 0.020 0.015 Ool6 0.05 31.53 208 140 0.50% 6.00% 0.026 0.312 0.000 0.000 0.155 0.021 0.015 0.16 0.05 32.50 ' 240 ]50 0.50% 6.50% 0.026 0.338 0.000 0.000 Ool76 0.021 0.016 0.17 0.06 33.37 274 160 0.50% 7.00% 0.026 0.364 0.00] 0.001 Ool98 0.022 0.016 0.17 0.06 34.45 308 170 0.60% 7.60% 0.031 0.395 0.003 0,002 0.225 0.027 0.020 0.2] 0.07 42,69 351 180 0.60% 8.20% 0.031 0.426 0.006 0.003 0.252 0.027 0.021 0.22 , 0.07 44.00 395 190 0.60% 8.80% 0.031. 0.458 0.010 0.004 0.280 0.028 0.021 0,23 0.08 45.17 440 200 0;60% 9.40% 0.031 q.489. 0.015 0.005 0.308 0.028 0.022 0.23 0.08 46.22 486, 210 0.60% 10.00% 0.031 0.520 0.021 0.006 0.336' O.oz8 0.022 0.24 0.08 47ol8 533 220 0.60% 10.60% 0.031 0.551 0.027 0007 0.365 0.029 0.023 0.24 0.08 48.05 581 230 0.70% il.30% 0.036 0.588 0.036 0.009 0.398 0.034 0.027 0.29 0.10 57.06 638 240 0.70% 12.00"10 0.036 0,624 0.046 0.010 0.432 0.034 0.028 0.29 0.10 58.04 696 250 0.70%. 12.70% 0.036 0,660 0.057 0.011 0.466 0.034 0.028 0.29 0,10 58.94 755 260 0.70% 13 .40% Om6 0.697 0.069 0.012 0.500. 0.034 0.028 0.30 0.10 59,76 815 270 0.70% 14.10% 0.036 0.733 0.082 0.013 0.535 0.034 0.029 0.30 o.io 60.52 ,876 280 0.70% 14.80% 0.036 . 0.770 0.095 0.014 0.569 om5 0.029 0.31 0.10 61.22 937 290 0.82% .15:62% 0.043 "0.812 0.112 0.017 0.610' 0.041 0.034 . 0.36 ' 0.12 72.54 1009' . 300 0.82% 16.44% 0.043 0,855 0.130 0.018 0.651 0.041 oms 0.37 0.12 73,36 1083 310 0.82% 17.26% 0.043 0.898 0.149 0.019 0.692 0.041 0.035 0.37 0.12 74.12 '1157. 320 0.82% 18.08% 0.043 0.940 0.168 0.020 0.733 0.041 Om5 0.37 0.12 74.82 1232 330 0.82% 18.90% 0.043 0.983 0.189 0.021 '0.774 0.041 0.036 I 0.38 0.13 75.47 1307 340 0.82% 19.72% 0,043 1.025 0.210 0.021 0.816 6.041 0.036 i 0.38 0.13 . 76.07 1383 350 0.95% 20.67% 0.049 1.075 0.236 0.026 0.864 0.048 0.042 1 0.44 0.15 88.84 1472 360 0.95% 21.62% 0.049 1.124 0.263 0.027 0.912 0.048 0.042 I 0.45 0.15 89.54 1562 370 0.95% 22.57% 0.049 l.l74 0.290 0.028 0.960 0.048 0.043 ' 0.45 0.15 90.19 1652 380 0.95% 23.5;2% 0_049 1.223 0.319 0.028 1.008 0.048 0.043 0.45 0.15 90.80. 1743 390 0.95% 24.47% 0.049 1.272 0.348 0.029 1.057 0.048 0.043 0.46 0.15 91.36 1834 400 0.95% 25.42% 0.049 1.322 0.378 0.030 1.105 0.048 0.044 0.46 0.15 91.89 1926 410 1.34% 26.76% 0.070 1.392 0.422 0.044 1.173 0.068 0,062 0.65 0.22 130.44 2056 420 1.34% 28.10% 0.070 1.461 0,467 0.045 1.242 0.069 0.062 0.66 0.22 131.34 2188' 430 1.34% 29.44% 0.070 1.531 0.513 0.046 1.311 0.069 0,063 0.66 0.22 132.17 2320 . -t . . . , ~ 24cHour SCS Type 1A Design Storm - 100 Year IMPERVIOUS IncrementlJ Cumulative Rainfall mere. Rainfall Accum." Design Req'd Stot'g Req'd Stor'g Time distr. Rainfall Increment Rainfall flowrate Volln w perc Vol In - pere mill . distr. inches inches ef, e e 440 1.80% 31.24% 0.094 1.624 0.576 0.064 1.403 0.092 0.085 0.89 0.30 178.72 2499 450 1.80% 33.04oio 0.094 1.718 0.642 0.066 1.495 0.092 0.085 0.90 030 179.95 2679 460 3.40% 36.44% 0.177 1.895 0.770 0.128 1.670 0.175 0.163 1.71 057 342.85 3021 470 5.40% 41.84% 0.281 2.176 0.984 0.214 1.949 0.278 0.261 2.76 0.92 551.07 3572 480 2.70% 44.54% 0.140 2.316 1.095 0.111 2,088 0.139 0.132 L39 0046 278.02 3850 490 1.80% 46.34% 0.094 . 20410 .Ll70 0.075 2.i81 0.093 0.088 0.93 031 186.13 4037 500 1.34% 47.68% 0.070 20479 1.227 0.057 2.250 0.069 0.066 0.69 0.23 138.94 4176 510 1.34% 49.q2% 0.070 2549 L284 0.057 2319 0.069 0.066 0.70 0.23 139.24 4315 520 1.34% 5036% 0.070 2.619 L341 0.057 2389 0.069 0.066 0.70 0.23 139.52 4454 530 0.88% 51.24% . OJJ46 2.664 L379 0.038 20434 0,046 0.044 . 0046 0.15 91.77 4546 540 0.88% 52.12% 0.046 2.710 1.417 0.038 2.480 0.046 0.044 0046 0.15 91.88 4638 550 0,88% 53. 00% 0.046 2.756 1.456 0.038 . 2525 0.046 0,044 0046 0.15 91.99 4730 560 0.88% 53.88% 0.046 2.802 10494 0.038 2.571 0.046 0.044 OAG 0.15 92.09 4~22 570 0.88% 54.76% . 0.046 2.848 L533 0.039 2.616 0.046 0.044 0.46 0.15 92.19 4914 580 0.88% 55.64% '0.046 2.893 1.571 0.039 2.662 0.046 0.044 0,46 0.15 92.29 5007 590 0.88% 5652% 0.046 2.939 1.610 0.039 2.708 0.046 0.044 I 0046 0.15 9238 5099 600 0.88% 57.40% 0.046 2.985 1.649 0.039 2.753 0.046 0.044 0046 0.15 92047 5191 610 0.88% 58.28% 0.046 3.031 1.689 0.039 2.799 0.046 0.044 0046 0.15 '9256 5284 620 0.88% 59.16% 0.046 3.076 1.728 0.039 2.844 0.046 0.044 0046 0.15 92.64 5377 630 0.88% 60.04% 0,046 3.122 1.768 0.040 2.890 0.046 0.044 0.46 0.15 92.72 5469 640 0.88% 60.92% 0.046 3.168 1.807 0.040 2.935 0,046 0.044 0,46 0.15 92:80 5562 650 0.72% 61.64% 0.037 3.205 L840 0.033 2m3 0.037 0.036 038 0.13 75.98 5638 660 .0.72% 62.36% 0.037 3.243 1.872 0.033 3.010 0.037 0.036 038 0.13 76.03 5714 670 0.72% 63.08% 0.037 3.280 1.905 0.033 3.047 0.037 0.036 038 0.13 76.08 5790 680 0.72% 63.80% 0.037 3318 1.938 0.033 3.085 0.037 0.036 038 0.13 76.13 5866 690 0.72% 64.52% 0.037 3355 1.971 0.033 3.122 0.037 0,036 038 0.13 76.18 5942 700 0.72% 65.24%' 0.037 3392 2.003 0.033 3.159 0.037 0.036 I 038 0.13 76.22 6019 710 0.72% 65.96% 0.037 3.430 2.036 0.033 3.197 0.037 0.036 038 0.13 76.27 6095 720 0.72% 66.68% 0.037 30467 2.069 0.033 3.234 0.037 0.036 038 0.13 7631 6171 730 0.72% 67.40% 0.037 3505 2.103 0.033 3.271 0.037 0.036 038 0.13 7635 6248 740 0.72% 68.12% 0.037 3542 2.136 0.033 3309 0.037 0.036 038 0.13 7639 6324 750 0.72% 68.84% 0.037 3.580 2.169 0.033 3346 0.037 0.036 038 0.13 76.43 6400 760 0.72% 6956% 0.037 3.617 .2.202 0.033 3383 0.037 0.036 ! 038 0.13 76047 6477 770 O.57~ 70.13% 0.030 3,647 2.229 0.026 30413 0.030 0.029 030 0.10 60.57 6537 780 0.57% 70.70% 0.030 3.676 . 2.255 0.026 3.442 0.030 0.029 036 0.10 60.59 6598 790 0.57% 71.27% 0.030 3.706 2.282 0.026 3.472 0.030 0.029 030 0.10 60.61 6659 800 -0.57% 71.84% 0.030 3.736 2308 0.027 3501 0.030 0.029 0.30 0.10 60.63 6719 810 0.57% 72.41% 0.030 3.765 2335 0.027 3531 0.030 0.029 . 030 0.10 60.66 6780 820 0.57% 72.98% 0.030 3.795 2361 0.027 3561 0.030 0.029 I 030 0.10 60.68 6841 , 830 0.57% 73.55% 0.030 3.825 2388 0.027 3590 0.030 0.029 ,030 0.10 60.70 6901 840 0.57% . 74.12% 0.030 3.854 2.415 0.027 3.620 0.030 0.029 030. .0.10 60.72 6962 850 0.57% 74.69% 0.030 3.884 2.441 0.027 3.649 0.030 0:029 , 030 0.10 60.74 7023 860 0.57% 75.26% 0.030 3.914 20468 0.027 3.679 0.030 0.029 030 0.10 60.76 7084 870 0.57% 75.83% 0.030 3.943 20495 0.027 3.708 0.030 0.029 030 0.10 60.78 7144 880 0.57% 76.40% 0.030 3.973 2522 0.027 3.738 0.030 0,029 0.30 0.10 60.80 7205 890 0.50% 76.90% 0.026 3.999 2545 0.024 3.764. 0,026 0.025 I 027 0.09 53.35 7259 .900 ~ 0.50% 77.40% 0.026 4.025 2569 0.024 3.790' 0.026 0.025 . I 0.27 0.09 53.36 7312 , 910 0.50.% 77.90% 0.026 4.051 2592 0.024, 3.816 0,026 0.025 0.27 0.09 53.38 7365 920 0.50% 78.40% 0.026 4.077 2.616 0.024 3.842 0.026 0.025 I 0.27 0.09 53.39 74i9 930 0.50% 78.90% 0.026 4.103 2.640 0.024 3.868 0.026 0.025 0.27 0.09 53041 7472 940 0.50% 79.40% 0.026 4.129 2.663 0.024 3.894 0.026 0.025 027 0.09 53.42 7525 950 0.50% 79.90% 0.026 4.155 2.687 0.024 3.920 0.026 0.025 , 0.27 0.09 53.43 7579 960 0.50% 80.40% 0.026 4.181 .2.711 0.024 3.945 0.026 0.025 0.27 0.09 .53045 7632 970 0.50% 80.90% 0.026 4.207 2.734 0.024 3.971 0.026 0.025 0.27 0.09 53.46 7686 980 0.50%" 81.40% 0.026 4.233 2.758 0.024 3.997 0.026 0.025 0.27 0.09 53.47 . 7739 990 0.50% 81.90% 0.026 4.259 2.782 0.024 4.023 0.026 0.025 0.27 0.09 53.49 7793 1000 0.50% 82.40% 0.026 4.285 2.806 0.024 4.049 0.026 0.025 0.27 0.09 5350 7846 1010 0.40% 82.80% 0.021 4306 2.825 0.019 4.070 0.021 0.020 I 0.21 0.07 42.81 7889 1020 0.40% '83.20% '0.021 4326 2.844 0.019 4.091 0.021 0.020 0.21 0.07 42.82 7932 1030 0.40% 83.60% 0.021 4347 2.863 0.019 4.112 0.021 0.020 0.21 0.07 42.82 7975 1040 0.40% 84.00% 0.021 4368 2.882 0.019 4.132 0.021 0.020 0.21 0.07 42.83 8018 1050 OAO% 84.40% 0.021 4389 2.901 0.019 4.153 '0.021 0.020 0.21 0.07 42.84 8060 .. . .. . . 24-HourSCS Type lA Design Storm -100Year Incremental Cinnulative Rainfall Inere. Raillfall AccurD.. Design Req'd Stor'g. Req'd Stor'g Time distr. Rainfall Increment Rainfall flowrate Vol In - pCrc V 01 In - perc min rustr. inches inches cfs c c 1060 0.40% 84.80% 0.021 4.410 2.920 0.019 4.174 0.021 0.020 0.21 0.07 42.85 8103 1070 0.40% 85.20% 0.021 4.430 2.939 0.019 4.195 0.021 0.020 0.21 0.07 42.85 8146 1080 0.40% 85.60% 0.021 4.451 2.958 0.019 4.215 0,021 0.020 0.21 0.07 42.86 8189 1090 OAO% 86.00% 0.021 4.472 2.977 0.019. 4.236 0.021 0.020 0.21 0.07 42.87 8232 1100 0.40% 86.40% 0.021 4.493 2.997 0.019 4.257 0.021 0.020 0.21 0.07 42.88 8275 1110 0.40% 86.80% 0.021 4.514 3.016 0.019 4.278 0.021 0.020 0.21 0.07 42.88 8318 1120 0.40% 87.20% 0.021 4.534 3.035 0.019 4.298 0.021 0.020 0.21 0.07 42.89 8360 1130 0.40% 87.60% 0.021 4.555 3,054 0.019 4.319 0.021 0.020 0.21 0.07 42.90 8403 1140 0.40% 88.00% 0.021 4.576 3.073 0.Oi9 4.340 0.021 0.020 0.21 0.07 42.90 8446 1150 0.40% 88.40% 0.021 4.597 3.093 0.019 4.361 0.021 0.020 0.21 0.D7 42.91 8489 1160 0.40% 88.80% 0.021 4.618 3.112 0.019 4.381 0.021 0.020 0.21 0.07 42.92 8532 . 1170 0.40% . 89.20% 0.021 4.638 3.131 0.019 4.402 0.021 0.020 0.21 0.07 .42.92 8575 1180 0.40% 89.60% 0.021 4.659 3.150 0.019 4.423 0.021 0.020 0.21 0.07 42.93 8618 li90 0.40% 90.00% 0.021 . 4.680 3.169 0.019 4.444 0.021 0.020 0.21 0.D7 .42.94 8661 1200 0.40% 90.40% 0.021 4.701 3.189 0.019 4.464 0.021 0.020 0.21 0.07 42.94 8704 1210 0.40% 90.80% 0.021 4.722 3.208 0.019 4.485 0.021 0.020 0.2] 0.07 42.95 8747 1220 0.40% 91.20% omi 4.742 3.227 0.019 4.506 0.021 0.020 0.21 0.07 42.96 8790 1230 .0.40% 91.60%. 0.021 4.763 3.247 0.019 4.527 0.021 0.020 0.21' 0.07 42.96 8833 1240 0.40% 92.00% 0.021 4.784 3.266 0.019 4.548 .0.021 0.020 0.21 0.07 42.97 8876 1250 0.40% 92.40% 0.021 4.805 3.285 0.019 4.568 0.021 0.020 0.21 0.07 42.97 8919 1260 0.40% 92.80% 0.021 4.826 3.305 0.019 4.589 0.021 0.020 0.21 0:07 42.98 8962 1270' 0.40% 93.20% 0.021 4.846 3.324 0.019 4.610' 0.021 0.020 0.21 0.07 42.99 9005. 1280 0.40% 93.60% 0.021 4.867 3.343 0.019 4.631 0.021 0.020 0.21 0.07 42.99 9048 1290 0.40% 94.00% 0.021 4.888 3.363 0.019 4.651 0.021 0.020 0.21 0.D7 43.00 9091 1300. 0.40% 94.40% 0.021 4.909 3.382 0.019 4.672 0.021 0.020 0.22 0,07 43.00 9134 1310 0.40% 94.80% 0.021 4.930 3.401 0.019 4.693 0.021 0.020 i 0.22 0.07 43.01 9177 1320 0.40% 95.20% 0.021 4.950 3.421 0.019 4.714 0.021 0.020 I 0.22 0.D7 43.02 9220 1330 0.40% 95.60% 0.021 4.971 3.440 0.019 4.734 0.021 0.020 i 0.22 0.07 43.02 9263 1340 0.40% 96.00% 0.021 4.992 3.460 0.019 4.755 0.021 0.020 I 0.22 0.07 43.03 9306 I 1350 0.40% 96.40% 0.021 5.013 3.479 0.019 4.776 0.021 0.020 i. 0.22 0.D7 43.03 9349 1360 0.40% 96.80% 0.021 5.034 3.498 0.019 4.797 0.021 0.020 I 0.22 0.07 43.04 9392 1370 0.40% 97.20% 0.021 5.054 3.518 0.019 4.817 0.021 0.020 I 0.22 0.07 . .43.04 9435 , 0.07 1380 0.40"10 97.60% 0.021' 5.075 3.537 0.019 4.838 0.021 0.020 ! .0.22 43.05 '9478 1390 0.40% 98.00% 0.021 5.096 3.557 0.Oi9 4.859 0.021 0.020 I 0.22 0.07 43.05 9521 . 1400 0.40% 98.40% 0.021 5.117 3.576 0.019 4.886 0.02i 0.020 ! 0.22' 0.D7 43.06 9564 I 1410 0.40% 98.80% 0.021 5.138 3.596 0.019 4.901 0.021 0.020 I 0.22 0.D7 43.06 9607 i420 0.40% 99.20% 0.021 5.158 3.615 0.019 4.921 . 0.021 0.020 r 0.22 6.07 4367 9650 1430 '0.40% 99.60% 0.021 5.179 3.635 0.019 4.942 0,021 0.020 j 0.22 0.D7 43.07 9693 1440 0.40% 100.0% 0.021 5.200 3.654 0.019 4.963 0,021 0.020 I 0.22 0.07 43.08 9736 ~.'II. .. .. . . 18".public pipe Worksheet for Circular Channel Project Description Project File f:lprojectslhaestadlllowmaster filesl3820stm1. 1m2 Worksheet 18" public pipe Flow Element . Circular Channel Method Manning's Formula Solve. For Channel Depth ., , Input Data Mannings Coefficient 0.011 Channel Slope 0.001200ftllt Diameter 18.00 in Discharge 0.07 cIs "Results. Depth 0.13 It Flow Area 0.0~ fl2 Wetted Perimeter 0.91 It Top Width 0.85 It Critical Depth 0.10 It Percent Full 8.89 .' Critical Slope 0.004642 ftllt Velocity 0.91 ftls Velocity Head 0.01 It S'pecific Energy 0,15 It " Froude Number 0.53 Maximum Discharge 4.63 cIs Full Flow Capacity 4.30 cfs I Full Flow Slope 0.317984e-6 ftllt I , Flow is subcritical. " 03116109 10:45:19 AM Haestad Methods, Inc. 37 Brookside Road Waterb"ury, CT 06708 i(~03) 755-1666 I FlowMaster v5.13 Page 1 of 1