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Volume required for the East Filtration Basin. <br /> Filtration Area 1(East Basin 8P): <br /> Contributing Impervious Area(A) = 16058 sf <br /> Rainfall Depth (P)= 1.1 in <br /> Infiltration Rate(I)= 0.8 in/hr <br /> Draw Down Time(T)= 48 hr <br /> Filtration Factor (F) = 05 <br /> Volume Required= (P)*(A) <br /> F <br /> Vol,req = 2944 cf <br /> Volume Provided @ Outlet= 3717 cf <br /> Surface Area Required = Vol,req <br /> (I)*(T) <br /> SA,req= 920 sf <br /> Surface Area Provided= 1260 sf <br /> Drawdown Time= Vol,provided <br /> (SA,provided) *(I) <br /> Drawdown Time= 44 hrs <br /> *See Attached Stage-Storage Table 8P for Details <br />