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• Watershed Analysis Rule 2.06.5(2)(d) <br />SYMBOL DESIGNATION: <br />Reclaimed area = R Pre-mined condition = P <br />USING THE UNIVERSAL SOIL LOSS EQUATION <br />A=R•K•L•S•C•P <br />A =the soil loss in Tons/Acre/Year <br /> R P <br />R =rainfall factor 30.0 30.0 <br />K =soil erodibility factor 0.28 0.28 <br />LS =length slope factor 16.4 18.5 <br />C =Crop Management 0.062 0.067 <br />P =erosion control practice factor 1.0 1.0 <br />SEDIMENT VOLUME <br />• AREA R K LS C P A= tons/acre/year <br />R 30 0.28 16.4 0.062 1.0 8.54 <br />P 30 0.28 18.5 0.067 1.0 10.41 <br />The above calculation demonstrates that the soil loss from the reclaimed area will be less <br />than the soil loss from the pre-mined area. Therefore, the reclaimed configuration of the <br />Bowie No. 1 East Mine will reduce the amount of total suspended solids discharged to the <br />surface waters as compared to such discharges prior to mining. <br />• April 98 <br />4xii <br />7R ~8 JRAr-o3 <br />APrRav~ ~ a//v/v9 <br />