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1.0-foot mean salvage thickness was used for Map Units 12C end 12D to calculate recoverable soil volumes listed in Table 1 end Exhibit 9-1. This soil salvage figure • accounts for inclusions snd topsail lose during selvage due to brush clearing. 278, 27D-Silas Loam. Silas loam soils occur on nearly level to moderately :ep upper drainage channels and concave swales. This soil is deep, has a thick, t k colored surface horizon, end lacks significant subsoil/substratum profile developr~ Adjacent soils have more profile development with subsoil clay accumulation (Zola variant) or have a residual sandstone bedrock contact (Coutis). the recommended soil selvage thickness is based on the thickness of the surface mollic epi pedon and the average depth to unsuitable, extremely hard and wet subsurface ma t~eriel. The mean in situ suitable soil thickness for 6 profiles is 40 inches (Addendum 8, Tab 9). The 278 and 27D map units consist of 90 percent Silas with 5 percent Cau[is and 5 percent 2oltay Variant inclusions (Addendum 3, Tab 9). A 3.0-foot mean salvage thickness wa:: used for this map unit to calculate recoverable soil volumes listed in Table 1 and Exhibit 9-1. 34C, 34D•Coutis Loam. Coutis loam soils occur on the strongly sloping to moderately steep • bedr ock controlled concave sideslopes and upland sweles or drainages. The soil profile has a very thick, dark colored surface horizon which directly overlies a thin C horizon and sandstone bedrock at 40 to 60 inches. Adjacent soils are shallower (Vinevada) or have more profile development with subsoil clay accumulation (ROUCt and Foidel). The recommended soil salvage thickness is based on the thickness of the mollic epi pedon and depth to sandstone bedrock. Soil salvage will be terminated at the sandstone bedrock contact. The mean in situ suitable soil thickness for 15 Coutis profiles is 48 inches (Addendum 8, Tab 9). The 34C and 34D map units Consist of 80 percent Coutis ui[h 10 percent Vinevada and 5 percent each of Foidel and Routt inclusions (Addendum 3, Tab 9). A 3.5-foot mean salvage thickness was used for Map Units 34C and 34D to calculate recoverable soil volumes listed in Table 1 and Exhibit 9-1. This soil salvage figure accounts for inclusions and topsoil loss during salvage due to brush clearing. 35D, 35E-Aeberg Clay. These map units ere located on the strongly sloping to steep 14