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c- <br /> IV . STORAGC TI�9C : The In��tant Slora9e Begins until i:he Peak Storage <br /> i� Attained (14in, ) , tp_yc�r SLorm <br /> T c -25 + p��55� ',� )ul; <br /> Qo <br /> T c -25 + 2255 <br /> 0.207 <br /> T e -25 + 104 <br /> T e .13�nrin. _`�.o <br /> U. VOLUME OF WATER FLOWING INTO THE RETENTION BASIN PER ACRE <br /> 1MPERVIOUSNE55 (FT'/AC) . <br /> V = 3G06 - 40 Q T <br /> 8 T + 25 � <br /> VB = 3606 79 - 40(0. 207) (79) <br /> 79 + 25 <br /> V _ 2739 - 65k <br /> s <br /> �8 _ �� � �j�J. �C� <br /> VI . MAXIMUM VOLUME OF WATER STORED IN RETENTI���ASIN (FT� Iy�l� <br /> VT = VB x Area x Cp � a,� � � 5 I <br /> Cl ,��J}p" �,� Z � q 8 <br /> V c 2085 x 0.62 x 0. 78 � - <br /> r �� � � � 2�, <br /> �f�° � <br /> V T = 1°B8'-F-Y' ' ' � <br /> � � � � C� <br /> VII . PIPE SIZINC FOR DEVELOPED CONDITIONS WITHOUT DETENTION <br /> A = 0.62 <br /> C _ 0.78 <br /> T� e 6 Min. (5 minutes to start of flow� plua 1 minute <br /> trevel time) <br /> Ilo = 2.35 (From f.hert 18) <br /> 3 <br /> 9/28/83 <br /> . ) <br />