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( <br /> IStonm�:dcr Detcntion Critcria: <br /> � Dclain Cor lhc follo���ing stomis :md reicasc at Ihc prcdc��clopcd ratc of nmofl: <br /> • 2-�•car storni and relcasc al 50`S�� of pre-dc�clopcd 2-�r:n <br /> � • I(I-��c,ir and relcnsc al predc�'clopcd 10-t�cnr <br /> � • l IlU-yr.�r,md relcasc :�l prrdccclopcd I UO-1'air <br /> � Pro��idc a coircction f.iclor per Scction I-3?.2? COL .1'mnn�rurrr ,11unn,��rmcnr ,1/umi��l. <br /> � Prcdct�clopcd cantlition dclincd as: ticcund em����h li�rrst un :V�lcncooJ l�ill soil�. <br /> �1'atcr Qualil) '1'rcalmenl: <br /> I <br /> i . 'llrat 2-yc;ir rcicasc ratc from ilr�cntiun �,�,nd <br /> • B�qr.155 I�O\\'S LI'C:IICf lllan �hc rcyuircd uc,ilmrnt ra�r. <br /> ' 1'recipilalion �'alucs: <br /> Prccipilalion caluc� Inr Ihc ?J-hi�ur siunn urc shi��cn hrl����� per Ihc ('(ll: ,17annn arrr <br /> ;1 htnu,Lrmrnl ,4lcnuml. <br /> � 6-ntunlh u.')�1 inchc� <br /> 2-yc:u' I.Si inchcs <br /> IU-vcnr ?.25 inch�•s <br /> � 25-��car ?.b0 inr�ics <br /> IOQ-ec;ir i.�5 i,i.;i�� <br /> I <br /> t'onvc��:�ncc Desi�;n <br /> I fhc ratiunal mclhoJ ��as uscd ti,r pi�ic �irin� calrul:dion�. :\ s�irc:idshcct sho��inc pipr si�r <br /> c.ilcul;diuns iti includcd in A��pcndi� 13. <br /> Il hc�iipcs�crre sizcd to cum c� Ihc ?i-�r;u' run��il. <br /> I Dcicntion Desitin <br /> Storm�calcr dcicntion ti�r thc si�c is proci�lcd h�� ,in opcn pond. Thc dctcntiun s��slcm ��olumcs <br /> arc cnlculutcd using thc S;inta 13;irh;ir.� Urh:ui I l��dro�raph mcthod nnd Ihc SlonnSHGD", <br /> � cont��wcr�irugrant. 'l�hc pond h;is U.h tirl ul Jc;�d sloragc. 4.-! fccl of licc slorflgc. ,md I Ibol u( <br /> � lirch�,ard. :\ correcti�,n fariar I lium Pipurc I-3.L ('OL currcction faclor charl)ol' 1.-II1 ��as <br /> inchidcd in thr dcicnlion drsign fi�r thc 13.� prrccnl impcn ious surl;�cing on Ihc sitc. <br /> I `f' <br /> Panattoni Developmenl LlC Buildings C and� September 12,2007 <br /> � Hydraulics Report -3- • . , ,, , , <br />