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38 -Fughes loam <br />38 -Fughes loam, 15 to 25 percent slopes <br />SETTING • <br />Landforms: alluvial fans, valley side slopes, and uplands <br />Elevation: 6,500 to 8,500 feet <br />Mean annual air temperature: 37 to 42 degrees F <br />Mean annual precipitation: 18 inches <br />Frost-free period: 100 days <br />CHARACTERISTICS OF THE FUGHES SOIL <br />Parent Material: residuum and colluvium from interbedded sandstone and shale <br />Dominant native plants: Gambel oak, Utah serviceberry, common chokecherry, Kentucky <br />bluegrass, wheatgrasses <br />Typical Profile <br />1 inch to 0 -mat of slightly decomposed grasses, twigs, and leaves <br />0 to 19 inches -dark grayish brown loam <br />19 to 23 inches -dark grayish brown clay <br />23 to 32 inches -brownish yellow clay <br />32 to 38 inches -brownish yellow gravelly clay <br />38 to 47 inches -olive yellow very gravelly loam <br />47 inches -variegated weathered shale bedrock • <br />Depth class: deep to very deep <br />Drainage class: well drained <br />Permeability: slow <br />Available water capacity: moderate <br />Potential rooting depth: 20 to 40 inches <br />Surface runoff: medium to very rapid <br />Hazard of water erosion: low <br />Shrink-swell potential: high <br />Mass movement potential: low <br />COMPOSITION <br />Fughes soil and similar soils: 85 percent <br />Curecanti: 5 percent <br />Contrasting inclusions: 10 percent <br />CONTRASTING INCLUSIONS <br />Five percent Cochetopa soils on the slopes and valleys. <br />Five percent Buckley soils on the slopes and valleys. <br />• <br />Soils Description Report -West Elk Mine <br />December 1994 WESTEC 10 <br />