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Cover Type -Oak-aspen-mountain brush mixture <br />• Hydrologic Condition Poor <br />Soil Type - Absarokee C <br />Curve Number 74 <br />RUN-OFF VOLUME - -Pond F <br /> Precip Direct Run-off <br />Area Acres Curve # Amount Run-off Vol A-F <br />Disturbed 26.11 87 1.8 0.75 1.64 <br />Coal Mine Waste 23.81 90 1.8 0.93 1.84 <br />Mixed Shrub 132.46 41 1.8 0.00 0.00 <br />Dry Mixed.Shrub 201.20 57 1.8 0.01 0.18 <br />Juniper Woodland 4.12 61 1.8 0.04 0.01 <br />Prev. Disturbed 0.60 74 1.8 0.26 0.01 <br />TOTAL 388.30 3.68 <br />TOTAL REQUIRED WATER VOLUME - - A-F 3.68 <br />SEDIMENT VOLUME -Pond F <br />Use the universal soil loss equation. <br />• <br />A=RKLSCP <br />R =rainfall factor 30.00 <br />K =soil erodibility factor 0.37 <br />LS =combined length slope factor 900' - 2% 0.39 <br />Use Ditch F7 Length 8 Slope <br />C =cropping management factor 1.00 <br />P =erosion control practice factor 1.00 <br />A =sediment, tons/acre/year 4.33 <br />Two Year Sediment Volume -Acre-Feet 0.19 <br />54.64 ACRES - 115 #/CF <br />Mixed Shrub and Dry Mixed Shrub not included. <br />Total Required Sediment Pond Capacity -Acre-Feet 3.87 <br />n <br />U <br />TR-43 App. B-4 09/06 <br />/3 PPRo ~D <br />9 ~ ///o b <br />