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KERR COAL MINE <br />CALCULATED SEDIMENTOLOGY DATA <br />RECLAIMED CONDITION MARR PIT <br />SOIL EROD/B/L/TY FACTOR: <br /> <br />Sail Type Emtlibility <br /> Factor, K <br />Clay Loam 0.26 <br />SLOPE FACTOR: <br />Length <br /> <br />A Slope <br /> <br />% m Slope <br />Angle <br />tle LS <br />Fa1.tOr <br />290 7% 0.5 4.0 157 <br />260 10.0% 0.5 5.7 230 <br />200 19 0% O.fi 10.8 4 64 <br />260 3.0 % 0.3 1.7 0 52 <br />560 4.0% 0 4 2.3 1.08 <br />530 6.0% OS d6 2.41 <br />390 16.0% 0.8 9.1 591 <br />220 11.0% O6 fi3 2.80 <br />270 18.0 % 0 B 10 2 5.45 <br />150 13.0% 0.6 7.4 2.57 <br />160 9.0% 0.5 51 1.49 <br />325 110% 0.6 6.3 3.29 <br />360 150% 0.6 8.5 5.38 <br />430 12.0% 0.6 6.8 4.37 <br />490 7.0% 0.5 4.0 2.01 <br />Average LS = 3 OS <br />The LS Factor was calculated by. <br />LS = (Slope Lenglhl72 6J"m'(1O.B'sin(slope angle) + 0.03) !or Slopes < B <br />LS = (Slope Length/72.6)"m'(16 B'sin(slope angle) - 0.5) 10I Slopes > B°. <br />Where: <br />Slopec3% m=0.3 <br />Slope=4% m=0.4 <br />Slope>f0% m=08 <br />COVER AND PRACTICE FACTORS: <br />Cover Cover CamDY Cover Practice <br />Type Factor, C Factor, P <br /> % (%) <br />Retlaimetl 57% 0% 0.05 0.90 <br />ANNUAL SEDIMENT YIELD <br />The lollowing spreadsheet calculates fhe pretlicfed sedimetrt yield Ior the prged area. The Aross sediment yield <br />is determinetl accoNinp to fhe Revisetl Universal Sal Loss Equation. <br />PARAMETER DESCRIPTION VALUE <br />Annual RainYall Facor 18.50 <br />Soil Erotlibiliry Facor 0.28 <br />Length Slope Factor 3.05 <br />Cover Factor 0.05 <br />Prdclice Factor 0.90 <br />Gross Annual Setlimern Yield 0.63 bns/acreJyear <br />