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Table 3.5-5. Salvageable Topsoil Volumes <br />• <br /> Volume (acre- feet) Salvageable <br /> Soll Tvpe Min. Max. Ave. Depth (ft) Acreage <br /> Heldt silty clay, 52.8 79.2 66.0 4 to 6 13.2 <br /> 3 to 129 slopes <br /> N Shill stony loam, <br /> 6 to 251 slopes 0.0 67.6 33.8 0 to 2 33.8 <br /> Total Volume 52.8 196.8 99.8 <br /> Aequl red volume (12- <br /> inch redl st ributSon <br /> depth) - - 47.0 <br />Of that soil that is available for salvage, some is better suited <br />than others because of slope, stoniness, or other factors. In <br />order to determine how much of the salvageable material should be <br />stripped in each area, the required volume was calculated using a <br />planned 12-inch redistribution depth over the entire disturbed <br />area. These required volumes are also exhibited in Table 3.5-5. <br />The Heldt silty clay is the most suitable soil for salvage on the <br />basis of slope, texture, and stoniness and the calculations show <br />that this soil contains enough suitable material (even in the <br />minimum condition) to provide 12 inches of material for redistri- <br />bution. Additionally, it will be more economically efficient to <br />concentrate the topsoil salvage operation in one soil type. In <br />order to provide the required volume, the Heldt silty clay would <br />be stripped to a depth of 3.5 feet. <br />NCEC - Coal Aidge #1 3-61 ABC/1145/900301 <br />