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, <br /> 1Y. STORAGE TIME _ <br /> The instant storage begins until the peak storage is attained (Min). <br /> 2 YEAR 30 YEAR <br /> T ■ -25 + T ■ -25 + zz5 <br /> I�� <br /> T ■ -25 + T � -25 + f u-�— <br /> /•5'd <br /> T . . -25 + T ■ -25 + �� :.. <br /> T � T . I 3.� ok <br /> Y, VOLUME OF NATER FLOWING INTO THE RETENTION BASIN PER ACRE IMPERVIOUSNESS <br /> (FT3-AC) <br /> 2 YEAR 10 YEAR <br /> � � , 3",, r - qo C�'�>r <br /> �s ` S T .�., <br /> �f ys ■ ">c�g '13.'-� - �jC1.541 13 3 <br /> ■ r <br /> ys . VS • l24? b - 8� 9.3 <br /> y . � VS � 4 29 �� v,t <br /> s . <br /> YI. MAXIMUM VOLUME Of NATER STOREO IN RETENTION BASIN (FT3) <br /> 2 YEAR 10 YEAR <br /> VT r VS x Area x Cp VT ` VS x Area x Cp <br /> yT : VT . � 4Z9.3 X o.72q X G•9� <br /> YT • VT ' ��7. 3 G. f. <br /> LVEk'L�fT �KI�N.JI��rI. FGL <br /> ZG%. 3 C . F. X ��. i. _ ��..`fd. K3 <br /> s�2,S�B�c,�' <br /> z <br />