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Design Storm Peak Stora.�e Time Maximum Storage Volume (Ft;/AC) <br /> � (Minutes) <br /> 10 YR T : -25 � 2254 Vf : 3(,07T - k0 QoT <br /> '�3� <br /> 2SYR T =�3 � 27�Oo6 Vf = 4�; - 40QoT <br /> , <br /> 30 YR T =-20 � 21�6�0 y= _ y3�� _ 4� QoT <br /> , <br /> 100 YR T =20 . 2430 Vf = 4E��T _ 40 QoT <br /> � , <br /> How to use table: <br /> ; Ezample: Qa11ow = 0.9 cfs <br /> Design Storm : 23 Yr. <br /> A = !0 acres <br /> , "", C�� = 0.9 <br /> �-, <br /> Qo = ( allowl = 0.9 _ 0.1 <br /> A C�� 10 .9 . <br /> T � -23+ 706 = 139.3 <br /> � <br /> O.l <br /> VS = 4329 (139.5) - 40(0.1)U 39.3) _ <br /> 139.5 . 25 <br /> �s = 311) cf/acre impervious <br /> Tu6/� 2. <br /> � <br />