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ENERGY FUELS <br />CALCULATED SEDIMENT YIELD <br />RATON CREEK MINE <br />u <br />• <br />SOIL ERODIBILITY FACTOR: <br />Sa'~ Type eca~tnliry <br />Facior.K <br />Santly Loom 0 32 <br />TOTAL <br />SLOPE FACFOR: <br />~~.v d~ . 7 <br />1 <br />Length Elevation Slope m Slape LS <br /> Change Angle Focta <br />(h) (h) (%) (deg) <br />d2 Id 3J 3% 0.6 10.4 3.47 <br />the LS Focror was calcNOted by <br />Cover Cavei Canopy Cover ractice <br />Type Factor. C Faclor.P <br /> L%) C%) <br /> <br />Redoimetl (Post-Law) 50% D% 0 D] 0 80 <br />TOTAL: <br />COVER AND PRACTICE FACTORS: / 1 `AE"" <br />L5=(Slope Length/726)^m'(ID.BSm(slope angre)+DOJ) for 5/oPes<9% <br />LS= (Slope Lenglh,026)^m'(r6.8'sin(slope angle) - D.5) for SlOpes> 9% <br />Where' <br />Sbpe <3% m=DJ UI <br />Slo e=d% m=D.4 C <br />5%~S/ope<10% m=05 3Z'~~ (.D <br />Slape>lD% m.D.6 <br />RAINFALL FACTOR: <br />//a' r 1 <br />R=7o <br />GRO55 SEDIMENT YIELD <br />the following spreodsneet calculates the predicted sedrmenl yard for the pro/eci area. the gross sediment geld <br />is determined occordmg ro the Revised Universal Sail Loss fquolion. <br />PARAMETER DESCRIPTION VALUE <br />Annual Rainfall Factor <br />Soil ErotllblFdy Factor <br />Lengm Slope Factor <br />Cover Factor <br />• Practlce Factor <br />Gross Annual Sediment Yield <br />76.00 <br />0.92 <br />3.47 <br />0.07 <br />0.00 <br />4 72 tons/acre/Year <br />~~~ ~~ <br />