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i <br /> i <br /> Sununan�7'ublc <br /> IS�orm Rc�urn Rclr.isc K.dc Rcicasc Ralc - -Dctcntion Detcntion I <br /> I�rcyucncy Rcyuircd Prc,�idcd �'olumc Rcyuircd Volumc Prcvidccl I <br /> � (1'cars) (C�S) CfS;__ _ (C� (CF <br /> 2 0.05 0.47 24.G56 24,G56 <br /> 10 �_ 0.25 0.24 30,Sd7 30,547 -- <br /> � 100 �_0.55 _� O.jS _ 3G.572 -- - - -- 3G.572 _ <br /> Calculalions arc prm�idcd in Appcndix 13. <br /> I <br /> � Water Quality Design <br /> A S�ornil�iltcr` rutridgc mcdia filtcr �;iull �cill �iruviJc ��alcr yualil�� Ircauncni liir thc pa��cd <br /> I :uc:is sulijcct lo echicular ir:,rr�. n s��,��„��i,�<,�" manholc��ill pro�-idc prcircauncnt aftcr nmoff <br /> disch:ugcs fmm thc conlrol numholc and prior lo rcicasc inlo �hc SlomiPillcr`. l'hc filtcrs usc a <br /> '7.PCi mcdia as rccommcndcd by ihc \4ashing�on S'.dc Dcpartnunt of Lcolog�. Thc filtcr is sizcd <br /> � 10 Irc;d thc 2-ycar dischargc from Ihc Jc�cntion pond using Ihc StomiPillcr` Design Manual mass <br /> luading mclhod and Cily of I��crctt icywrcmenls for filtcrs locatcd do��mstrcam of dctcnlion. <br /> Runoff from buiiding roofs is assumcd lo conlrihutc to Ihc mass loading. Scc Appcndiz 13 li�r <br /> ISlonnPiltcr"and Slonnccptor` sizing calcula�ions. <br /> An S s 16-fool �aull ��ilh 23 filtcr cmlrid�cs is rcquircd. l�hc StorniFiltcr° intcmal b���ass is <br /> � c;ipablc of h���.issing�hc flo��s in cxccss of Ihc 2-��car slonn. A dS-inch diamctcr con:rctc <br /> manh�,lc ISir a5i)i) is rcyuurd fi�r prctrc.dmrnl. I hc Slomucptor� is capablc of b�passing Ilu��s <br /> � in c.�ccss of Ihc �-�rnr s�unn. <br /> i ��.ltIlrCIl�I1Cl' <br /> 'I hc drlcnlion ��nnJ. Slnnncc�,inr' . an�l ti�ormFil�rr' musl hc mainla�ncJ acconling to ('ilv of <br /> I I=�crdt rcyuirenunls and Ihc manul;icfurcrs' maintcnancc manu,ils. A ccrlificatc of m,iinlcnancc <br /> must bc suhmillcd to ihc C'ih ;mnu,ilh. l hr m;iinlcnancc nnd a��crilions manuals arc includcd in <br /> \�ipcndix ('. <br /> � <br /> � <br /> � �:ih-�il.'_- �����il` mtcir�� dicuinn ��ir�.�ni. hudJm�:.l�dh�Jiauhccirpnn�lucmad <br /> i <br /> Panattoni DevelopmeN LLC Buildings C and D Septem6er 72,1001 l <br /> HydiaulicsReport •4- . . � � � . � <br />