Laserfiche WebLink
16. Topsoil Stripping Procedures after February 2008 <br />16.1 Prime Farmland Soils <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 that the remaining topsoil stripping for the Morgan property <br />(prime farmland soils after 15Feb08) will be as follows: Lift A - strip to color change or 24 inches, <br />whichever is less, where the color change is defined as from dark brown, which is the normal color <br />of the topsoil, to light tan, which is the distinct color of the subsoil. This color change is consistent <br />and has been used by the operators with no confusion. It is anticipated that the in -place stripping <br />thickness for Lift A will be between 6 inches and 24 inches, with an average of 17 in place inches <br />(Table 2.04.9 -3; 100% recovery of 98E) , which is based on the experience with the color change <br />in this area as well as the breakdown of Lift A and B in the 1998 soil survey. Table 2.04.9 -5 shows <br />17.5 (soil 98E) in place inches over the entire Morgan field and 17.80 in place inches (soil 98E) for <br />the undisturbed portion. This data for the average thickness for Lift A and B is seen in Table 2.04.9- <br />5. Due to the fact that there are a limited number of samples in the field and this average is based <br />on the samples only, WFC needs some flexibility in case areas are encountered with less soil <br />thicknesses that do not show up in the samples. For this reason, WFC commits to salvaging an <br />average of 14 -18 inches. For volume calculation purposes, it is anticipated that the average <br />stripping thickness of the remaining (post 15Feb08) Lift A is 16.0 inches, which is approximately <br />90% of the original average from the samples. <br />Table 2.04.9 -5 is also split into 3 parts: the 1S is the entire Morgan property, the 2 is the part of <br />the Morgan property that is still undisturbed (as of February 2008) and the 3rd is the non prime <br />farmland fields to the north of BB Road and west of 2700 Road. Lift B - Stripping thickness will be <br />between 20 inches to 60 inches, depending on the location and suitability. It is anticipated that the <br />average stripping thickness for Lift B will be 36 in place inches (Table 2.04.9 -5; 100% recovery <br />98E), although there is variability due to rock cobbles and color change to near white due to caliche <br />present in the subsoil. For volume calculation purposes, it is anticipated that the average stripping <br />thickness of Lift B (Prime Farmland soil left on Morgans land after Feb 2008 and 90% recovery) <br />is 36.7 inches. The shift foreman will review the soils map showing the soil sample thickness in <br />(Revised October 09) 2.04.9 -33 <br />