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74 - Torriorthents - Haplagids complex, very stony <br />74 - Toniorthents - Haplargids complex, very stony <br />SETTING • <br />Landforms: toe slopes, fans <br />Elevation: 5,000 to 8,000 feet <br />Mean annual air temperature: 46 to 50 degrees F <br />Mean annual precipitation: 12 to 16 inches <br />Frost free period: 90 to 120 days <br />CHARACTERISTICS OF THE TORRIORTHENTS SOIL <br />Parent material: residuum and colluvium from shale, sandstone, limestone or siltstone with basalt <br />overburden in some areas. <br />Dominant native plants: Indian ricegrass, western wheatgrass, prairie junegrass, scarlet Indian <br />paintbrush <br />Typical Profile <br />Little to no profile development <br />Depth class: deep <br />Drainage class: well drained <br />Permeability: moderately stow to rapid • <br />Available water capacity: low to moderate <br />Potential rooting depth : 60 or more inches <br />Surface runoff: moderate <br />Hazard of water erosion: high <br />Shrink-swell potential: moderate <br />Mass movement potential: moderate to high <br />CHARACTERISTICS OF THE HAPLARGIDS SOIL <br />Parent material: residuum and colluvium from shale, sandstone, limestone or siltstone with basalt <br />overburden in some areas. <br />Dominant native plants: Indian ricegrass, western wheatgrass, prairie junegrass, scarlet Indian <br />paintbrush <br />Typical Profile <br />Little to no profile development <br />Depth class: deep <br />Drainage class: well drained <br />Permeability: moderate to moderately slow <br />Available water capacity: moderate to low <br />Potential rooting depth: 60 inches or more <br />Surface runoff: moderate • <br />Hazard of water erosion: high <br />Soils Description Report -West Elk Mine <br />December 1994 WESTEC 1B <br />