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' - -. - <br />,y:, <br />.. .. <br /> <br />SKETCH t4AP FOR LEVEL BASINS <br />.-' - N <br />' 3.5% <br />,.• Rockpile ' <br />' ~ Existing Conto <br />_ ' `___ Promised Level Basin <br />.. i... <br />Spillway <br />' •. y` <br />~p:,. <br />APi 6 <br />Basins should be closed at <br />both ends. <br />Runoff factor for this slope and area <br />is 50%. A 25 year storm will have 2.3 <br />inches of rainfall in 24 hours. <br />