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_ _ . . .. _ . . . _ . : _ . , .. _. . ... . -. .. ...t... _ .. r ,. . , .... . . , . � <br /> Design Sto. .i Peak Storage Time Maximum Storage 4olume (Ft3/AC) <br /> (Minutes) <br /> 10 YR T = -25 + 2254 V = 3607T - 40 QoT <br /> -� s +�- <br /> 25 YR T =-25 + 2� V = 4.�29T- 40 Qo T <br /> •�i —� s 'P� <br /> Sf '(R T =-20 + 2I60 V = 4329T - 40 QoT - -- - <br /> Qo S T+20 <br /> !00 YR T —20 +�2430 V = 4860T -40 QoT = - "``"=' '" <br /> �/ Qo 5 -'P�6 . - " <br /> How to use table: _ - • . ' - -- ' <br /> ' ' `�k ' ' .+r:3� - ��:='�" <br /> � ... p.. . . . . . _ — _ _ "� <br /> Example: Qallow = 0.9 cfs _ . '. _ - :h __,,_;_K:_:_. <br /> Design Storm = 25 Yr. , _ _ .: ,.� t-;k: -:,, ,_ <br /> . _ : . �' _ <br /> A = !0 acres " > i'- <br /> Cdev = 0.9 . <br /> Qo = ( allow) = 0.9 = 0.1 ` <br /> � A Cdev �10)(.9 <br /> T = -25+ 2706 = 139.5 <br /> 0.1 <br /> VS = 4324 (139.5) - 40(0.1)(139.5) _ <br /> 139.5 + 25 <br /> �5 = 3l 13 cf/acre impervious <br /> T4b/e 2. <br /> :.,.wxm�va..:,� • ;,:�-.__.i �..�.:�.._. �._.._� � .>. ......�. : .�..... _.... . ._��� --til:a:,.a..�_.,�.. ,_ .......r_:., � ._ _.. . <br /> , <br /> i " < < . Yy''�i+ .._ . . . . . __ '` ' <br /> .��. � ! 3$SY. . .6 t . dK..�., �.1n]�t4SY+LJ� . . .. . ... . . ' _ ° .. . .:- - <br />