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83 -Work loam, <br />MAJOR MANAGEMENT FACTORS <br />• Recreation <br />Soil-related factors: high shrink-swell potential, slope, clayey subsurface soil teMUres, and <br />permeability moderately slow. <br />Management considerations: <br />Revegetate disturbed areas at the construction sites as soon as possible to reduce the hazard of <br />soil erosion. <br />The effects of shrinking and swelling can be minimized by using proper engineering designs. <br />Higher construction and maintenance costs should be expected on this unit. <br />Stockpile topsoil and use it to reclaim areas disturbed during construction. <br />Rangeland <br />Soil•related factors: moderately slow permeability <br />Dominant vegetation in the potential plant community: western wheatgrass, needleandthread, <br />muttongrass, bluebunch wheatgrass, bottlebrush squirreltail, big sagebrush, Gambel oak, true <br />mountainmahogany, common snowberry, Saskatoon serviceberry, Arizona fescue, slender <br />wheatgrass <br />• Annual production of air-dry vegetation: 1,200 to 2,500 pounds per acre <br />Management considerations: <br />Proper grazing use helps to maintain the quality and quantity of preferred rangeland vegetation. <br />Brush management improves deteriorated areas of range that are producing more woody shrubs <br />than were present in the potential plant community. <br />Range seeding may be needed if the proportion of the preferred forage plants has decreased. <br />Woody shrubs may hinder range seeding efforts. <br />INTERPRETIVE GROUPS <br />Land capability classification: Vle <br />Range site: Deep Clay Loam <br />Plant Association: Aaroovron smi hit/Aaroovron trachvcaulum- i a lettennanii <br />U <br />Soils Description Report -West Elk Mine <br />December 1994 WESTEC 23 <br />