Laserfiche WebLink
anticipated that the average stripping thickness of the remaining (post 15Feb08) Lift A is 16.0 <br />inches, which is approximately 93% of the original average from the samples. <br />Table 2.04.9 -8 is also split into 3 parts: the 1' 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 3` 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 35.7 in place inches (Table 2.04.9 -8A; 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 93% recovery) <br />is 36.7 inches. The shift foreman will review the soils map showing the soil sample thickness in <br />the area to be stripped. The foreman will check with the equipment operators to make sure the <br />proper thicknesses are being followed. The operators will be trained on the stripping of Lift B, and <br />will know to stop the removal when the color change occurs from light pink to light tan, which <br />indicates the zone change from the Lift B subsoil to the Bench 1 material. Also, the operators will <br />be trained to evaluate the change where coarse fragments rise from less than 10% volume in Lift <br />B to material that has significantly higher coarse fragments (20-25% which is Bench 1). This was <br />the cause of the cutoff of the Lift B material in the 1998 soil survey. The Lift B average thickness <br />is greater than the average 32" for Lift B in Table 2.04.9 -3 for the 98E soil at 90% recovery, <br />however, this additional average of 4 inches (32" vs. 36 ") is due to the fact that some lower quality <br />soils have also been included in the prime farmland field. See Map 2.04.9 -1. In addition, the area <br />of the field has changed slightly, giving more area to the southwest corner, which has higher <br />thicknesses. <br />Topsoil is stripped using a combination of dozer, truck - shovel, and dump truck. Lift A and Mixed <br />Topsoils are windrowed by dozers into a pile, from which a truck - shovel loads the dump truck. Lift <br />B Topsoil is generally too thick to windrow into piles, and therefore is directly excavated by the <br />truck - shovel into the dump truck. The dump truck then either dumps the topsoil material at a <br />designated location that is being retopsoiled, or dumps the material at a designated topsoil <br />stockpile site. Determination of topsoil type is based on a combination of the location of topsoil <br />Revised September 2010 (PR 06) 2.04.9 -37 <br />