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<br />C <br />EXHIBIT 8 <br />SOIL MAPPING UNIT DESCRIPTIONS. <br />(35c) Aaberg silty clay, 3 to 12 percent slope. <br />This is a moderately deep, well-drained soil on gently to strongly <br />sloping hillsides. It formed in material weathered from shale and <br />siltstone. <br />Included in this unit are Waybe silty clay loam (14) and Binco silty <br />clay loam (C10). <br />Typically the surface layer is grayish brown silty clay about 2 inches <br />thick. The subsoil layer is brown and pale brown silty clay about 30 <br />• inches thick. The substratum is light yellowish brown silty clay about <br />3 inches thick. Soft shale bedrock occurs at about 35 inches. <br />• Permeability is very slow. Effective rooting depth ranges from 30 to 40 <br />inches. Available water capacity is low. Surface runoff is rapid, <br />erosion is high from water. <br />35D, 12 to 25 percent slopes, is on strongly sloping to moderately steep <br />hillsides. <br />35F, 25 to 65 percent slopes, is on moderately steep to very steep <br />mountain ridges. <br />(SA) Absher fine sandy. loam; 1'to 6~percent slopes. .. <br /> This is a deep, well drained soil in nearly level to moderately sloping <br />• alluvial valley floors at elevations of 6,300 to 7,000 feet. It formed <br />• <br />