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and Bk, Btk, and C horizons. The volumes are shown for a) the full thickness reported from the soil <br />survey and also b) 80% or 93% of the thicknesses from the soil survey, depending upon wether <br />the soils are prime or not. For prime soils, a 93% recovery is used. For non -prime soils, an 80% <br />recovery is used. This reduction is, used since the sow' stirvey points do not <br />showre might be some rocky areas that exist between sample points, thickness variations that <br />cannot be fully stripped in the field, and other constraints that can occur with large equipment.— <br />Table 2.04.9 -4 represents the acreage by map unit and the volume (cubic yards)of soil salvage <br />material by lift layer and map available in the 1998 soil survey area and which lies in the <br />disturbance area. The volume is calculated from the acreages and recommended topsoil salvage <br />depth. The recommended topsoil salvage depth for each map unit is based on the average of all <br />depth samples taken for the depth unit. Soil map unit 98B and 98H and all soil units north of BB <br />Road and west of and including the mine pit are combined into one lift layer for all horizons as cited <br />in 2.05.4(2)(d). <br />August 2013 (PR 08) 2.04.9 -30 <br />