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Design Storm Peak Storage Time Maximum Storage Volume (Ft3/AC) <br /> (Minutes) <br /> !0 YR T = -25 + 2234 V = 3607T - 40 QoT <br /> _.._.._ _..__.. _ � _ . 5 f+'13-. � <br /> I23 YR T =-23 . 2706 V = 4329T - 40 Qo T <br /> .- ---... ._ _ _. � s_._�i'�. <br /> SO YR T :-20 . 1160 V = 4329T - b0 QoT <br /> �c S �b <br /> l00 YR T -20 ti 2430 V = 4860T - 40 QoT <br /> �n- s 'I'�6' <br /> + <br /> How to use table: , • <br /> Ezample: Qallow = 0.9 cis <br /> Design Storm = 23 Yr. <br /> A ■ !0 acres • <br /> . CAev ' 0.9 <br /> Qo = ( allow) = 0.9 = 0.1 <br /> A Cdev 10 .9 <br /> T s -2�+ 706 = 139.3 <br /> 0.1 <br /> Vs = 4329 (139.3) - 40(0.1)(139.3) _ <br /> 139.3 « 23 <br /> • VS = 3i 13 cf/acre impervious <br /> . <br /> ,; � <br /> I <br /> r46i� z. a . � <br /> � <br />