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• Lift A is a combination of the following horizons where present: A, Ap, Ag, AB, AC, Bw, and Bt if <br />the pH of those horizons was less than 8.0. Lift layer B is a combination of the following <br />horizons where present: AC, Bw, and Bt if the pH of those horizons was greater than 8.0 and <br />Bk, Btk, and C horizons. Since the vast majority of the Bench 1 material has been tested to <br />meet the suitability criteria and since some of this material will be needed to provide a total <br />minimum depth in all reclaimed areas of 48 inches, some Bench 1 material may be included to <br />achieve this goal. As described in Section 2.04.9, this is generally standard practice to place the <br />suitable Bench 1 above the overburden spoil, followed by either the mixed topsoil (in the case of <br />the non-prime farmlands) and Lift B followed by Lift A in the case of the prime farmlands. <br />Stripping after February 2008 - Non prime Farmland <br />The non prime farmland topsoil stripping procedures for this area is as follows: Since Lift A <br />thicknesses are from 6-13 inches and Lift B thicknesses are also relatively shallow (8" to 22"), it <br />is proposed that Lift A and B be combined into one lift of mixed topsoil. It is very difficult to strip <br />thicknesses of approximately 6-8 inches with such large equipment. The thickness averages for <br />• the non prime farmland fields west of the pit in February 2008 show 7.1 inches for the average <br />of Lift A and 17.4 inches of Lift B. Using 80% of the soil sample average to obtain a stripping <br />average for the area, this results in 5.7 inches for Lift A and 13.9 inches for Lift B. Therefore, <br />the total average stripping thickness for the combined Lift A and Lift B is 19.6 inches. The <br />expected range is from 8 inches to 38 inches. The mine foremen and operators will be trained <br />on the stripping of the mixed Lift A & B, and will know to stop the removal when coarse <br />fragments have a rise from less than 10% volume in Lift B to material that has significantly <br />higher coarse fragments (20-25%). This is the Bench 1 material. In some cases, bedrock will <br />be encountered at the end of Lift B in the non prime farmland areas. Table 2.05.4(2)(d)-5 shows <br />these thicknesses, acreages and volumes obtained. <br />For the 4.68 acres of prime farmland 98A soil in the northwest corner of the WFC property, <br />most of this topsoil was already stripped (prior to the determination of prime farmlands in <br />February 2008) to create a sediment pond for the mine at this location. It is located at the low <br />point of the permit in this area. The topsoil was stripped in a mixed A and B lift from this area to <br />• (Revised Nov 2008) 2.05.4(2)(d)-20