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SWB -2 100YR Runoff.txt <br />Runoff Curve Number and Runoff Fri ]an 31 10:03:35 2014 <br />Project: SWB -2 Bg: B Langenfeld Date: 01/31/14 <br />Location: Revenue Mine Checked: Date: <br />Developed <br />1. Runoff Curve Number (CN) <br />cover description <br />Oak-Aspen & Mt brush (Poor) <br />Bare rock <br />CN (weighted): 76.9 <br />Total Area: 9.000 Acre <br />2. Runoff <br />Return Period: <br />50 -Year <br />Rainfall, P: <br />3.20 <br />Runoff, Q: <br />1.2077 <br />Runoff volume: <br />0.9057 <br />CN Soil Group Area(Acre) <br />74 C 7.241 <br />89 C 1.759 <br />Page 1 <br />in <br />in <br />Acre -Ft <br />RECEIVFn' <br />FEB 2 7 2)l <br />Division of <br />Mining & Safety <br />