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35C, 35D, 35E-Aaberg Clay. These map units are located on the strongly sloping to steeply <br />• sloping taeslopes, sideslopes, and rounded ridgetops. The soil profile is moderately deep <br />with a thin light colored surface horizon which overlies a clay subsoil and substratum. <br />Adjacent Binco and Aaberg variant soils have deep and shallow profiles, respectively. <br />Buckskin soils have dark colored surface horizons and subsoil clay accumulation. Yinevada <br />and Splitro have mollic epipedons. <br />The subsoil and substratum of the Aaberg profile is an unsuitable topsoil source due to en <br />excessive clay content, very high saturation percentage, and unfavorable consistence <br />(Appendix 9-6). The moderately high clay content of the A horizon is alleviated by a <br />high organic matter content (darker color), higher root numbers and favorable consistence. <br />The 35C, 35D, and 35E map units consist of 85 percent Aaberg with 5 percent ei nco, 5 <br />percent Aaberg variant, 2 percent Buckskin, 2 percent Yinevada, and 1 percent Splitro <br />inclusions (Appendix 9-2, Table 1). A 0.5 -foot mean selvage depth was used for these map <br />units to calculate recoverable topsoil volumes listed in Table 27-1 and Exhibit 9.7. <br />46C, 46D-Splitro Loam. Splitro loam soils occur on strongly sloping to moderately steep <br />• upper sideslopes and ridges. The soil profile has a dark colored surface horizon which <br />directly overlies sandstone bedrock at 10 to 20 inches. Included with this map unit are <br />moderately deep Yinevada soils, Aaberg with a light colored surface, end rock outcrop <br />areas. <br /> <br />The recommended topsoil salvage depth is based exclusively on the depth to sandstone <br />bedrock. The mean in situ suitable topsoil depth for 26 Splitro profiles is Tb inches <br />(Appendix 9-b). <br />The 46C and 46D map units consist of 85 percent Splitro with b percent Yinevada, b percent <br />rock outcrop, and 3 percent Aaberg inclusions (Appendix 9-2, Table 1). A 1.0-foot mean <br />salvage depth was used for these map units to calculate recoverable topsoil volumes listed <br />in Table 27-7 and Exhibit 9-1. This topsoil salvage depth figure accounts for inclusions <br />and topsoil lass during salvage due to brush clearing. <br />SOC, SOD-Cochetopa Loam. Cochetopa loam soils occur on strongly sloping to moderately <br />steep upland benches and colluvial sideslopes. The soil profile is deep end well <br />17 Revised 04/24/91 <br />