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16.4 Prime Farmland Soils Striaaino After February 2008 <br />The prime farmland designation for the 98A and the 98E soils was identified by the NRCS in <br />February of 2008. This resulted in numerous consultations with the DRMS and the NRCS about <br />how to immediately modify the topsoil handling plan to ensure that all prime farmland soils for <br />reclaimed prime farmlands were handled properly. This was done in TR 57, which was approved <br />in 2008. <br />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 B is a combination of the following horizons where <br />present: AC, Bw, and Bt if the pH of those horizons was greater than 8.0 and Bk, Btk, and C <br />horizons. Since the vast majority of the Bench 1 material has been tested to meet the suitability <br />criteria and since some of this material will be needed to provide a total minimum depth in all <br />reclaimed areas of 48 inches, some Bench 1 material may be included to achieve this goal. This <br />is generally standard practice to place the suitable Bench 1 above the overburden spoil, followed <br />by either the mixed topsoil (in the case of the non -prime farmlands) and Lift B followed by Lift A in <br />the case of the prime farmlands. <br />It was agreed with the NRCS in February of 2008, and in a followup phone call among Dan <br />Mathews, Greg Lewicki and the NRCS thatthe remaining topsoil stripping for the Morgan property <br />(prime farmland soils after 15Feb08) will be as follows: Lift A - strip to color change, where the <br />color change is defined as from dark brown, which is the normal color of the topsoil, to light pink, <br />which is the distinct color of the subsoil. This color change is consistent and has been used by the <br />operators with no confusion. It is anticipated that the in -place stripping thickness for Lift A will be <br />between 6 inches and 24 inches. Table 2.04.9 -8A shows 17.5 inches in place Lift A (soil 98E) in <br />place inches over the entire Morgan field and Table 2.04.9 -8B shows 17.80 inches in place inches <br />(soil 98E) for the undisturbed portion. This data for the average thickness for Lift A and B is seen <br />in Table 2.04.9 -8A through C. Due to the fact that there are a limited number of samples in the field <br />and this average is based on the samples only, WFC needs some flexibility in case areas are <br />encountered with less soil thicknesses that do not show up in the samples. For this reason, WFC <br />commits to salvaging an average of 14 -18 inches for Lift A. For volume calculation purposes, it is <br />Revised September 2010 (PR 06) 2.04.9 -36 <br />