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survey, with the actual topsoil quantity replaced directly on final graded spoil in the <br /> 1 Wadge mining and reclamation area. The Wadge area was selected since all redistributed <br /> topsoil was direct hauled. This eliminates a potential error attributed to changes in <br /> bulk density between the undisturbed soil and the stockpiled topsoil. A projected topsoil <br /> 1 salvage volume of 33.5 acre feet was determined for the 19.2 acre topsoil salvage area by <br /> overlaying Exhibit 9-1, Soil Types and Sample Locations, with the Reclamation Progress Map <br /> 1 as of December 31, 1989. The actual topsoil salvage volume (33.7 acre feet) was <br /> determined by multiplying the topsoil replacement area (26.8 acres) by the mean topsoil <br /> 1 replacement depth (1.26 feet). The mean topsoil replacement depth was determined by using <br /> the 14 sample points (W-226 through W-240) that were located in the three 1989 topsoil <br /> ' redistribution blocks (see Exhibit 1). The actual topsoil salvage volume essentially <br /> equalled the projected topsoil salvage volume. The difference between actual and <br /> projected topsoil salvage volumes was not significant enough to revise existing topsoil <br /> 1 salvage depth information for the soil map units. <br /> 1 <br /> 1 <br /> 1 <br /> 1 <br /> 1 <br /> i <br /> 1 <br /> 1 <br /> 1 ,o <br /> PEABODY COAL COMPANY <br /> Western Division <br />