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contained in Tab 9 and secondarily on historic reclamation at SCC's Seneca II and II-W Mines, was <br />developed to ensure that the most sutable soil within the disturbance area is salvaged. The <br />management plan evaluates the soil resources, recommends salvage thicknesses, describes techniques <br />used to salvage, store, and redistribute soil, and specifies an average redistribution thickness. Also <br />included are discussions on maintenance or testing procedures needed to restore the disturbed areas to <br />the desired postmine land use. <br />Evaluation of Soil Resources. The soils found in the Yoast study area are typical of soils found in the <br />cold, semi-arid regions of the Western United States. The soils within the Yoast disturbance area are <br />predominantly moderately deep 120 to 40 inches) to shallow 110 to 20 inches), and have developed in <br />weathered interbedded fine sandstone, siltstone, and shale, and in local slope wash and colluvium. <br />Most of the soils are Cryoborolls, Paleoborolls, and Chromusterts. Also found in the disturbance area <br />are Argiborolls and Cryorthents. <br />Most of the soils found in the study area contain at least six inches of suitable soil material. The best <br />sources of soil material within the Yoast disturbance area are Splitro loam, Winevada loam, Foidel <br />loam, Coutis loam, Silas loam, Zol[ay clay loam, Rout loam, and Buckskin clay loam. These soils <br />occupy about 72 percent of the projected disturbance area and contain greater than 1.0 feet of <br />salvageable soil material. These soils have thick (greater than ten inches) organic matter enriched <br />• surface horizons which overlie sandstone bedrock, loamy subsoil, or clay subsoil. <br />Major soil salvage limitations include clay and silty clay textures, high rock fragment content, very <br />steep slopes and shallow bedrock. Generally, those soils which have a very high percentage of clay or <br />rock fragments or overlie sandstone and shale bedrock at very shallow depths have little suitable soil <br />to be salvaged. A thin veneer of soil should be salvaged from Map Units 11C, 11 D, 35D, and 35E. <br />These soils have unsuitable clay contents and have severe consistency limitations in the subsoil and <br />substratum. No soil should be salvaged from Map Units R0. DL, RD, 103, 2F, 34F, 53F, 66F, X6F, <br />and W. These areas contain no suitable soil, have rock fragment contents greater than 35 percent, <br />and/or have very steep slopes where equipment cannot be operated safely. Peabody will obtain a <br />variance pursuant to Rule 4.06.2121 whenever suitable soil cannot be salvaged from any other map <br />unit because of equipment limitations or operator safety concerns. <br /> <br />7 <br />