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Specific Soil Map Units (1 E, 1 EW, and 808) at New Horizon 2 (1988 - 1996 disturbance area) was <br />more suited for mixed one -lift topsoil salvage because they are very shallow to shallow, have little <br />profile development, and /or are excessively stratified. The salvageable topsoil from these units <br />was primarily utilized, whenever feasible, in postmine dry pastureland area. One -lift topsoil was <br />isolated from the two -lift topsoil during all soil handling operations. <br />For the portions of the 1999 expansion area that were disturbed prior to February 2008, the A, Bt, <br />Bw, Bk and C horizons were combined for salvage in a mixed lift and suitable subsoil (Bench 1 <br />material) was salvaged and placed in Lift B. Map 2.05.4 -4 shows the thicknesses of both materials <br />that were placed in these areas as part of the reclamation. <br />Appropriate adjustments will be made to the recovery rate as dictated by actual field conditions <br />and initial topsoil balance reports. The actual amount of topsoil salvaged has been less than the <br />amount estimated in the soil survey. As of July 1994, WFC has experienced an overall recovery <br />of 80 percent compared to the volumes shown in the soil surveys. Table 2.04.9 -6 reflects estimated <br />salvage quantities for the 1995 study area and Table 2.04.9 -7 reflects estimated salvage quantities <br />for the 1999 disturbance area. <br />16.1 Topsoil Salvage Thickness - 1988 Study Area <br />This study addresses the approximate original permitted area of 274 acres or 235 disturbed acres, <br />as shown on Map 2.04.9 -1. The salvageable thickness of topsoil material presented in this section <br />are based on laboratory data and extensive field observations, and represent only the most suitable <br />sources of topsoil material. No unsuitable sources of topsoil will be salvaged and used during <br />reclamation activities. Table 2.04.9 -5 summarizes topsoil salvage thickness and characteristics <br />by map unit for the New Horizon 2 Mine disturbance area. It should be noted that the topsoil <br />thickness and volumes listed in Table 2.04.9 -5 are only estimates derived from field sample pits. <br />WFC live handled the majority of the topsoil with trucks and the mine shovel or large front end <br />loaders in front of the active pit to the final graded backfill. WFC is committed to salvaging and <br />redistributing all available topsoil. As of June 2010, the only areas from the original permit that still <br />(Revised July 2010) 2.04.9 -28 <br />