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RUN -OFF VOLUME - - Pond F (SCS /NRCS Method Method) <br />Precip <br />Direct <br />Run -off <br />Area Acres Curve # Amount <br />Run-off <br />Vol A -F <br />Disturbed 3.95 87 1.8 <br />0.75 <br />0.25 <br />Coal Mine Waste 38.39 90 1.8 <br />0.93 <br />2.96 <br />Mixed Shrub / 309.10 57 1.8 <br />0.01 <br />0.28 <br />Dry Mixed Shrub <br />Juniper Woodland 2.48 61 1.8 <br />0.04 <br />0.01 <br />Prev. Disturbed 11.15 74 1.8 <br />0.26 <br />0.24 <br />Prev. Disturbed 1.48 81 1.8 <br />0.48 <br />0.06 <br />TOTAL 366.55 <br />3.80 <br />TOTAL REQUIRED WATER VOLUME - - A -F <br />3.80 <br />SEDIMENT VOLUME - Pond F <br />Use the universal soil loss equation. <br />A= RKLSCP <br />R = rainfall factor <br />30.00 <br />K = soil erodibility factor <br />0.37 <br />LS = combined length slope factor 900'- 2% <br />0.39 <br />Use Ditch F7 Length & Slope <br />C = cropping management factor <br />1.00 <br />P = erosion control practice factor <br />1.00 <br />A = sediment, tons/acre /year <br />4.33 <br />3-Year Sediment Volume - Acre -Feet <br />0.30 <br />57.45 ACRES-115#/CF <br />Mixed Shrub and Dry Mixed Shrub not included. <br />Total Required Sediment Pond Capacity - Acre -Feet <br />4.10 <br />TR -81 App. B -6 10/13 <br />