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SWB -6 100YR Runoff.txt <br />Runoff curve Number and Runoff Tue Jan 28 10:55:46 2014 <br />Project: SWB -6 By: B Langenfeld Date: 01/28/14 <br />Location: Revenue Mine checked: Date: <br />Developed <br />1. Runoff Curve Number (CN) <br />cover description CN Soil Group Area(Acre) <br />Mined Land, Disturbed (Poor) 87 c 2.653 <br />Herbaceous mixture (Fair) 72 B 1.975 <br />CN (weighted): 80.6 <br />Total Area: 4.628 Acre <br />2. Runoff <br />Return Period: 50 -Year <br />Rainfall, P: 3.20 in <br />Runoff, Q: 1.4419 in <br />Runoff volume: 0.5561 Acre -Ft <br />RECEIVED <br />Page 1 FEB 2 7 20 14 <br />Division of Reclarna #eon, <br />Mining & Safety <br />