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� <br /> -� <br /> IV. STORAI�E TIME : The Instant Storage Begins until the Peak Storage — <br /> is Attained (min) . 10-year storm <br /> T = -25 + 2254 <br /> � <br /> 0 <br /> T = -25 + 2254 <br /> 0, 1665 <br /> z <br /> 0 <br /> � <br /> ., <br /> � <br /> m <br /> T = -25 + 11G " <br /> T = 91 min. �"' <br /> —i T <br /> .r --� <br /> N 2 <br /> m <br /> O <br /> V. VOLUME OF IvATER FLOWING INTO TfI[ RETENTION OAS1N PER ACRE m � <br /> IMPCRVIOUSNESS (FT3/AC) , 0 3 <br /> m <br /> Ug - 3607 - 40 Qo T m -Z-� <br /> � A Z <br /> C <br /> V c 3607 91 - 40( 0. 1665) (91 ) <br /> r 2 <br /> 8 91 + 25 ��+ <br /> � <br /> Ug = 2830 - 606 � � <br /> --�m <br /> , _ <br /> V9 = 2224 Ft3 g�+ <br /> r <br /> �m <br /> c v+ <br /> � � <br /> m <br /> VI . MAXIMUM VOLUME OF WATER STORL"D IN RETENTION BASIN (FT3 ) ;� m <br /> n <br /> . p <br /> UT = VS x Area x CU n <br /> VT = 2224 x 1 .OG x 0, �5 = <br /> N <br /> UT _ 2004 FT 3 RD��'+�,� � <br /> ��oF.c�as y�4�1, " <br /> m <br /> t c i''• � k. <br /> • . �i wl i: <br /> v :'n _.f.'•1 :e: r L <br /> A; �r ,' ct F <br /> o�:9�, pto `,�4. <br /> �����NAL.E��� <br /> 3 " <br /> lU/27/82 <br /> r <br />