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DRAINAGE CALCULATIONS TO MAGNESIUM STREET POND <br /> <br />Before Development Runoff: <br /> <br />Drainage Area <br />Runoff Coefficient <br />100 Year Rainfall Event <br />Runoff Volume (100 year event) <br /> <br />35.4 Ac. <br /> .25 <br /> 6.0"/24 Hr. <br /> 4.4 Ac. Ft. <br /> <br />After Development Runoff: <br /> <br />Drainage Area <br />Runoff Coefficient <br />i00 Year Rainfall Event <br />Runoff Volume (100 year event) <br /> <br />24.4 Ac. <br /> .35 <br /> 6.0"/24 Hr. <br /> 4.3 Ac. Ft. <br /> <br /> <br />