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• Loading• Calculations - Wadge coal and Spoil <br />C I <br />Annand Drew (1996-2003) <br />DSL = 0.000292(t/d) + 0.000826(t/d) = 3045 mg/l <br />(0.000135(af/d) + 0.000135(af/d)) x 0.00136 (92X increase) <br />Sage Creek (2004-2009) <br />DSC 0.000086(1/d) + 0.00062(t/d) = 2570 mg/I <br />(0.000101(ef/d) + 0.000101(af/d)) x 0.00136 (313X increase) <br />Loading Calculations Wolf Creek overburden and Spoil <br />Sage Creek (2000-2004) <br />DSC = 0.000351(t/d) + 0.001908(t/d) <br />(0.000311(ef/d) + 0.000311(af /d)) x 0.00136 <br />= 2670 mg/l <br />(223X increase) <br />Loading Calculations - Wolf Creek coal and Spoil <br />Sage Creek (2000-2004) <br />DSC = 0.000976(t/d) + 0.004678(t/d) <br />(0.000764(af/d) + 0.000764af /d)) x 0.00136 <br />= 2721 mg/l <br />(190X increase) <br />Replaced Spoil Discharge and Downgradient Alluvium <br />• <br />General AssumD[ions <br />1. Discharge in cfs for downgradient alluvium was derived from the equation: <br />0 = (1.16E-b)KIA, where the constant 1.16E-8 converts ft3/day to cfs. Discharge <br />values used to calculate resultant chemical loads (denominators in the DSC equations) <br />were converted to acre-feet per day by multiplying cfs by 1.98347. <br />2. Alluvium cross sectional areas were calculated using the equation: A = H(W•1.732H ), <br />where X saturated thickness (Table 7-4, Tab 7), and W is the estimated width of <br />saturated alluvial materials (Exhibit 16-3, Tab 16). 30-degree side slopes were <br />assumed for saturated alluvial materials. <br />17-5-3 Revised 06/19/95 <br />