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sideslopes, escarpments, and ridges. Ustorthents have a very shallow 10 to 10 inches) Profile with a <br />thin light colored surface horizon which directly overlies skeletal substratums of weathered shale and <br />sandstone. The surface horizon contains 30 to 50 percent rock fragments including gravel, cobbles, <br />and stones. Cryoborolls have a very shallow profile with a thin dark colored surface horizon which <br />directly overlies weathered and fractured sandstone. The surface horizon contains 15 to 65 percent <br />rock fragments including gravel, cobbles, and stones. Adjacent soils are shallow and have loamy dark <br />colored mollic epipedons (Splitrol while other adjacent areas are void of soil (Rock Outcropl. <br />The 103 map unit consists of 45 percent Ustorthents and 40 percent Cryoborolls with 70 percent <br />Rock Outcrop and 5 percent Splitro inclusions (Addendum 3, Tab 9, Soil Baseline Studyl. No <br />recoverable soil is available from this map unit due to very steep slopes, very thin soils, high rock <br />fragment content, and intermingled rock outcrops (Addendum 8, Tab 9, Soil Baseline Studyl. <br />RD-Improved Road. This map unit occurs where an improved transportation corridor has been placed. <br />No suitable soil is available from this map unit because the surface has been graded, gravelled, or <br />paved. Light-use roads, with intact soil, are not included in this map unit (Table 21-1, Soil Salvage <br />Volume (Life-of-Minel, and Exhibit 9-1, Soil Types and Soil Salvage Mapl. <br />DL-Disturbed Land (previously mined areas, farmstead areal. This map unit is located in areas where <br />prior construction has destroyed, covered, or contaminated the soil resource. These areas include <br />previously mined land on the eastern part of the study area and a farmstead in the southwest corner of <br />the study area. No suitable soil is available from this unit (Table 21-1 Soil Salvage Volume (Life-of- <br />Mine), and Exhibit 9-1, Soil Types and Soil Salvage Mapl. <br />W-Water. This map unit consists of man-made and beaver pond areas that existed when the baseline <br />soil surveys were completed. No suitable soil is available from this unit (Table 21-1 Soil Salvage <br />Volume (Life-of-Minel, and Exhibit 9-1, Soil Types and Soil Salvage Mapl. <br />Soil Salvage Techniques. Before any area at the mine site other than a proposed soil stockpile site is <br />significantly disturbed, the suitable soil material will be removed to the depth specified in Table 21-1, <br />Soil Salvage Volume (Life-of-Mine), and Exhibit 9-1, Soil Types and Soil Salvage Map. Suitable soil <br />will be salvaged from all significant disturbance areas including sediment ponds lincludes pond area, <br />embankment, <br />~I <br />17 Revised 2/99 <br />