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226 -Herm -Fughes - Kolob Family complex <br />Available water capacity: moderate <br />Potential rooting depth: 20 to 24 inches <br />Surface runoff: very rapid • <br />Hazard of water erosion: moderate to high <br />Shrink-swell potential: high <br />Mass movement potential: low to moderate <br />CHARACTERISTICS OF THE KOLOB FAMILY SOIL <br />Parent material: residuum and colluvium from interbedded sandstone and shale <br />Dominant native plants: Gambel oak, Utah serviceberry, Kentucky bluegrass, common <br />chokecherry <br />Typical Profile <br />2 inches to 0 -mat of intermediately decomposed grasses, twigs, and leaves <br />0 to 15 inches -dark grayish brown clay loam <br />15 to 25 inches -light brownish gray very stony clay <br />25 to 34 inches -light brownish gray very stony clay loam <br />34 to 60 inches -light gray very stony sandy clay loam <br />Depth class: very deep <br />Drainage class: well drained <br />Permeability: slow <br />Available water capacity: moderate <br />Potential rooting depth: 15 to 20 inches • <br />Surface runoff: very rapid <br />Hazard of water erosion: low to high <br />Shrink-swell potential: moderate <br />Mass movement potential: low to moderate <br />COMPOSITION <br />Herm soil and similar soils: 35 percent <br />Fughes soil and similar soils: 30 percent <br />Kolob Family soil and similar soils: 25 percent <br />Contrasting inclusions: 10 percent <br />CONTRASTING INCLUSIONS <br />Five percent Weed soils on the lesser sloping areas <br />Five percent Borpark soils on the steeper slopes <br />MAJOR USES <br />Wildlife, recreation, livestock grazing <br />u <br />Soils Description Report -West Elk Mine <br />December 1994 WESTEC 42 <br />