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212 -Hayrack -Muggins -Nutras complex <br />212 -Hayrack -Muggins -Nutras complex, 5 to 40 percent slopes <br />SETTING • <br />Landforms: mountain side slopes, ridge slopes <br />Elevation: 8,500 to 10,300 feet <br />Mean annual air temperature: 34 to 40 degrees F <br />Mean annual precipitation: 26 to 32 inches <br />Frost-free period: 55 to 70 days <br />CHARACTERISTICS OF THE HAYRACK SOIL <br />Parent material: residuum and coiluvium from interbedded sandstone and shale with basalt <br />overburden in some areas <br />Dominant native Plants: Engeimann spruce, subalpine fir, elk sedge, common juniper <br />Typical Profile <br />1 /2 inch to 0 -mat of intermediately decomposed needles, twigs, and leaves <br />0 to 9 inches -grayish brown clay loam <br />9 to 14 inches -light brownish gray clay loam <br />14 to 22 inches -brawn gravelly clay <br />22 to 60 inches -brown cobbly clay <br />Depth class: deep <br />Drainage class: well drained • <br />Permeability: slow <br />Available water capacity: moderate <br />Potential rooting depth: 15 to 30 inches <br />Surface runoff: medium to very rapid <br />Hazard of water erosion: low to high <br />Shrink-Swell potential: high <br />Mass movement potential: low to moderate <br />CHARACTERISTICS OF THE MUGGINS SOIL <br />Parent material: residuum and colluvium from interbedded sandstone and shale with basalt <br />overburden <br />Dominant native plants: Engelmann spruce, subalpine fir, common juniper, kinnikinnick <br />Typical ProTile <br />1 inch to 0 -mat of needles, twigs, and leaves <br />0 to 4 inches -brown loam <br />4 to 12 inches -pale brown loam <br />12 to 26 inches -brown cobbly clay and light brown cobbly loam <br />26 to 52 inches -reddish brown cobbly clay loam <br />Depth class: very deep • <br />Drainage class: well drained <br />Soils Description Report -West Elk Mine <br />December 1994 WESTEC 26 <br />