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4-82 <br />• <br />• <br />about 7 inches thick. The substratum to depths ranging from <br />less than 20 to more than 60 inches is a gravelly fine sandy <br />loam or gravelly fine sandy clay loam. <br />Permeability of the Torriorthents soil ranges from moderate <br />to moderately rapid. Available water capacity is moderate. <br />Effective rooting depth is dependent on depth of bedrock. <br />Runoff is moderate to moderatley high and the erosion hazard <br />for water is high. Wind erosion hazard is moderate to severe. <br />The unit is mainly used for wildlife habitat. <br />The present plant community consists of greasewood, juniper, <br />big sage, Salina wild .rye, and cheat grass. At higher <br />elevations the vegetation includes mountain mahagony, Utah <br />serviceberry, Gambel oak, snowberry and pinion pine. <br />This map unit is not rated for range. <br />4.7.5 Soil Reconstruction Material for Disturbed Land <br />4.7.5.1 Method of Evaluation <br />The criteria for evaluating soil as a plant growth media <br />are given in Table 4.7-1. The criteria include sodium <br />adsorption ratio (SAR), electrical conductivity or salinity <br />(EC), toxic materials, soil reaction (pH), available water <br />holding capacity (AWHC), erosion factor (k), wind erosion <br />group, texture, and percent coarse fragments. <br />• <br />