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i• <br />TABLE 2.05.3(3)-1 <br />SCS CURVE NUMBERS <br />FOR NEW HORIZON MINE <br />MONTROSE COUNTY, COLORADO <br />HYDROLOGIC SOIL GROUP <br />LAND USE - HYDROLOGIC <br />VEGETATION TYPE CONDITION A 8 C <br />Undisturbed Areas: <br />Cultivated Land Poor 76 84 88 <br />(Small Grain) Good 75 83 87 <br />Rotation Meadow Poor 75 83 85 <br />(Contoured) Good 69 78 83 <br />Meadow (Riparian) Good 58 71 78 <br />Pasture or Range Poor 79 86 89 <br /> Fair 69 79 84 <br /> Good 61 74 80 <br />Juniper -Grass Poor 75 85 89 <br /> Fair 58 73 80 <br />Upland Sagebrush -Grass Poor 67 80 85 <br /> Fair 51 63 70 <br />• Residential: <br />1/8-acre lots <br />Average <br />85 <br />90 <br />92 <br />1/4-acre lots Average 75 83 87 <br />1/3-acre lots Average 72 81 86 <br />1/2-acre lots Average 70 80 85 <br />1.0-acre lots Average 68 79 84 <br />Disturbed Areas: <br />Newly Graded Areas Average 86 91 94 <br />Paved Roads Average 89 92 93 <br />Gravel Roads Average 85 89 91 <br />Dirt Roads Average 82 87 89 <br />Reclaimed Areas: <br />Herbaceous Pre-Law (1977) Average 80 87 - <br />Herbaceous Post-Law (1977) Average 71 81 -- <br />Source: USDA-SCS Technical Release 55 (2nd Edition), June, 1986 <br />• <br />(Revised July 2006) <br />2.05.3(3)-15 <br />