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Juniper Woodland <br />Cover <br />Vegetative Cover % 45.3 <br />Litter % 23.3 <br />Ground Cover % 68.6 <br />Table 2 -2d -Runoff curve numbers for and and semiarid rangelands <br />Cover Type - Pinyon Juniper - pinyon, juniper or both; grass understory <br />Hydrologic Condition Fair <br />Soil Type - Loam C <br />Curve Number 73 <br />Coal Mine Waste <br />Table 2 -2d -Runoff curve numbers for and and semiarid rangelands <br />Cover Type - Herbaceous -mixture of grass, weeds and brush <br />Hydrologic Condition Poor <br />Soil Type - Loam D <br />Curve Number 89« <br />"CN for Gob based on TR -22 Munger accepted value <br />RUN-OFF VOLUME - - Office Pond 10 -Year <br />Precip Direct <br />Run-off <br />Area Acres Curve # Amount Run-off <br />Vol A -F <br />Disturbed 9.39 88 1.7 0.73 <br />0.571 <br />Shadscale Shrubland 1.87 81 1.7 0.42 <br />0.066 <br />Juniper Woodland 58.09 73 1.7 0.20 <br />0.958 <br />Coal Mine Waste 1.58 89 1.7 0.78 <br />0.103 <br />TOTAL 70.93 <br />1.699 <br />SEDIMENT VOLUME - Office Pond <br />Use the universal soil loss equation. <br />A=RKLSCP <br />R = rainfall factor <br />30.00 <br />K = soil erodibility factor - sandy loam <br />0.37 <br />LS = combined length slope factor <br />0.31 <br />Use Gob Base Ditch - 400'& 2% <br />C = cropping management factor - Figure 7 <br />1.00 <br />TR -16 14 <br />05/08 <br />