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RUN -OFF VOLUME - - Pond F (NRCS /SCS Runoff Equation) <br />Precip Direct <br />Run -off <br />Area Acres Curve # <br />Amount Run -off <br />Vol A -F <br />Disturbed 6.06 87 <br />1.8 0.75 <br />0.38 <br />Coal Mine Waste 35.93 90 <br />1.8 0.93 <br />2.77 <br />Mixed Shrub / 309.10 57 <br />1.8 0.01 <br />0.28 <br />Dry Mixed Shrub <br />Juniper Woodland 2.48 61 <br />1.8 0.04 <br />0.01 <br />Prev. Disturbed 11.15 74 <br />1.8 0.26 <br />0.24 <br />Prev. Disturbed 1.48 81 <br />1.8 0.48 <br />0.06 <br />TOTAL 366.20 <br />3.74 <br />TOTAL REQUIRED WATER VOLUME - - A -F <br />3.74 <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'- <br />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 />Two Year Sediment Volume - Acre -Feet <br />0.20 <br />57.10 ACRES-115#/CF <br />Mixed Shrub and Dry Mixed Shrub not included. <br />Total Required Sediment Pond Capacity - Acre -Feet <br />3.94 <br />TR -76 App. B -6 12/12 <br />