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• 1 <br />TABLE 2 (Cont.) <br />Hydrologic <br />ogic Soil Group <br />tion B C <br />Average 85 90 92 <br />Average 75 83 87 <br />Average 72 81 86 <br />Average 70 80 85 <br />Average 68 79 84 <br />Average 86 91 94 <br />Average 89 92 93 <br />Average 85 89 91 <br />Average 82 87 89 <br />Herbaceous Pre-Law (1977) Average 80 87 <br />Herbaceous Post-Law (1977) Average 11 81 <br />Residential: <br />1/8-acre lots <br />1/4-acre lots <br />1/3-acre lots <br />1/2-acre lots <br />1.0-acre lots <br />Disturbed Areas <br />Newly Graded Areas <br />Paved Roads <br />Gravel Roads <br />Dirt Roads <br />Reclaimed Areas <br />\\ TABLE 3 <br />• l Sedimentation Pond Design - Soils Information* <br />Nucla Mine, Colorado <br /> <br />Soil Type <br />or Area Hydrologic <br />Soil Group "k" <br />Facto <br />18/F-2 D 0.14 <br />5810/26-1 B 0.17 <br />5830/7C-2 B 0.17 <br />5810E/D-2 8 0.17 <br />5810I/38-2 B 0.17 <br />5810I/7C-1 B 0.17 <br />9904/D-1,2 D 0.22 <br />9904/F-2 D 0.22 <br />Reclaimed C 0.25 <br />Active Pit + Spoil Piles C 0.21 <br />Non-topsoiled Regraded Spoil C 0.23 <br />Topsoil Removed D 0.32 <br />Sail information included for Technical Revision (existing pits) and <br />Permit Revision (scraper pits). Source: Gary Wendt, Soil Scientist, <br />Peabody Coal Company (September 15, 1986). <br />5 <br />