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Exhibit Page 32 <br />Unit 121 <br />Name Sheek-Archuleta-Rock outcrop complex, 25 to 80 percent north slopes <br />Description This unit is 40 percent Sheek very stony sandy loam on canyon <br />sideslopes and footslopes of hillsides, 25 percent Archuleta very stony <br />sandy loam on shoulders and backslopes, and 20 percent Rock outcrop <br />on shoulders and canyon sideslopes. <br />The Sheek soil is very deep and well drained on canyon sideslopes and <br />footslopes of hillsides. Typically, the surface is covered with a mat of <br />intermediately decomposed leaves, twigs, and needles 1 inches thick. <br />The subsurface layer is very stony sandy loam about 4 inches thick with <br />about 10 percent stones on the surface. The subsoil to a depth of 60 <br />inches is very stony clay loam. Permeability is moderately slow. <br />Available water capacity is moderate. Effective rooting depth is 60 <br />inches or more. Run off is rapid, and the hazard of water erosion is <br />severe. <br />The Archuleta soil is shallow and well drained on shoulders. Typically, <br />the surface is covered with a mat of slightly decomposed leaves and <br />twigs 1 inch thick. The surface layer is very stony sandy loam 5 inches <br />thick with about 10 percent stones on the -surface. The lower part of <br />the surface layer is stony sandy loam 3 inches thick. The r substratum to <br />a depth of 17 inches is stony clay loam. Interbedded coal and shale is at <br />a depth of 17 inches. Permeability is moderately slow. Available water <br />capacity is very low. Effective rooting depth is 10 to 20 inches. Runoff is <br />rapid, and the hazard of water erosion is severe. Depth to soft bedrock <br />ranges from 10 to 20 inches. <br />Rock outcrop consists primarily of exposed sandstone bedrock on the <br />edges of mesa-tops, hillsides, canyon sideslopes, and mountain <br />