2010-08-10_REVISION - C1981008 (3)

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anticipated that the average stripping thickness of the remaining (post 15Feb08) Lift A is 16.0 inches, which is approximately 93% of the original average from the samples. Table 2.04.9 -8 is also split into 3 parts: the 1s` is the entire Morgan property, the 2n is the part of the Morgan property that is still undisturbed (as of February 2008) and the 3` is the non prime farmland fields to the north of BB Road and west of 2700 Road. Lift B stripping thickness will be between 20 inches to 60 inches, depending on the location and suitability. It is anticipated that the average stripping thickness for Lift B will be 35.7 in place inches (Table 2.04.9 -8A; 100% recovery 98E), although there is variability due to rock cobbles and color change to near white due to caliche present in the subsoil. For volume calculation purposes, it is anticipated that the average stripping thickness of Lift B (Prime Farmland soil left on Morgans land after Feb 2008 and 93% recovery) is 36.7 inches. The shift foreman will review the soils map showing the soil sample thickness in the area to be stripped. The foreman will check with the equipment operators to make sure the proper thicknesses are being followed. The operators will be trained on the stripping of Lift B, and will know to stop the removal when the color change occurs from light pink to light tan, which indicates the zone change from the Lift B subsoil to the Bench 1 material. Also, the operators will be trained to evaluate the change where coarse fragments rise from less than 10% volume in Lift B to material that has significantly higher coarse fragments (20 -25% which is Bench 1). This was the cause of the cutoff of the Lift B material in the 1998 soil survey. The Lift B average thickness is greater than the average 32" for Lift B in Table 2.04.9 -3 for the 98E soil at 90% recovery, however, this additional average of 4 inches (32" vs. 36 ") is due to the fact that some lower quality soils have also been included in the prime farmland field. See Map 2.04.9 -1. In addition, the area of the field has changed slightly, giving more area to the southwest corner, which has higher thicknesses. The NRCS has stated that it is desired to maintain a total thickness of approximately 4.0 feet in the replaced soil for the prime farmland soil fields. The salvage plan described for Lift A and Lift B, along with soil presently in stockpiles, will provide sufficient soil for replacement fo Lift A, Lift B, and Mixed Lift average uniform thickness as described in the zone replacement plan of Section 2.05.4(2)(d) Subsection 12.1.1, and depicted on Maps 2.05.4 -4 and 2.05.4 -6. (Revised July 2010) 2.04.9 -36