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Volume required for the North Filtration Basin. <br /> Filtration Area 2(North Basin 14P): <br /> Contributing Impervious Area (A) = 143585 sf <br /> Rainfall Depth (P) = 1.1 n <br /> Infiltration Rate (I) = 0.8 in/hr <br /> Draw Down Time(T) = 48 hr <br /> Filtration Factor (F) = 0.5 <br /> Volume Required = JP)*(A) <br /> F <br /> Vol,req = 26324 cf <br /> Volume Provided @ Outlet = 29016 cf <br /> Surface Area Required = Vol,req <br /> (I)*(T) <br /> SA,req = 8226 sf <br /> Surface Area Provided = 8992 sf <br /> Drawdown Time= Vol,provided <br /> (SA,provided) * (I) <br /> Drawdown Time= 48 hrs <br /> *See Attached Stage-Storage Table 14P for Details <br /> Volume Proposed= 32,733 cf >Volume Required=29,268 cf <br />