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Project: Pond 011 <br />By: B. Langenfeld Date: 07/09/09 <br />Location: New Horizon #2 West <br />Developed <br />1. Runoff Curve Number (CN) <br />Cover description CN <br />Soil Type Area(Acre) <br />Pasture Grassland Range (Good) <br />80 D 32.154 <br />Pasture Grassland Range (Good) <br />80 D 105.133 <br />80 D 38.716 <br />CN (weighted): 80.0 <br />Total Area: 176.003 Acre <br />2. Runoff <br />Return Period: 10 -Year <br />Rainfall, P: 2.00 in <br />Runoff, Q: 0.5625 in <br />Runoff Volume: 8.2501 Acre -Ft <br />C- Factor Calculation <br />Project: Pond 011 <br />By: B Langenfeld Date: 08/07/09 <br />Location: New Horizon Mine <br />Checked: Date: <br />Developed <br />C- factor (CF) <br />Cover description CF <br />Area(Acre) <br />Irrigated Pasture 0.500 <br />25.506 <br />Irrigated Pasture 0.500 <br />101.900 <br />Irrigated Pasture 0.500 <br />38.668 <br />CF (weighted): 0.500 <br />Total Area: 166.074 Acre <br />---- ------------------------------------------------------------------ <br />------------------------------------------------------------------- <br />Time of Concentration (SCS Method) <br />X.\Weslcm Fuels Nuel.Tunnll Revision 20W9 ,[Nuncy <br />ResPOnscT inel Files COmpmisson nocumenWATTACHMENT 2.053OH4 Pond <br />011{.ampmisen- 22MAY10 wpd <br />Attachment 2.05.3(3) -14 -2 <br />Runoff Curve Number and Runoff <br />