Laserfiche WebLink
• (Bench 1 material) was salvaged and placed in lift B. The Map 2.05.4-4 shows the thicknesses <br />of both materials that were placed in these areas as part of the reclamation. <br />Appropriate adjustments will be made to the recovery rate as dictated by actual field conditions <br />and initial topsoil balance reports. The actual amount of topsoil salvaged has been less than the <br />amount estimated in the soil survey. As of July 1994, WFC has experienced an overall <br />recovery of 80 percent compared to the volumes shown in the soil surveys. Table 2.05.4(2)(d)-4 <br />reflects estimated salvage quantities for the 1995 study area and Table 2.05.4(2)(d)-5 reflects <br />estimated salvage quantities for the 1999 disturbance area prior to February 2008. <br />Topsoil Salvage Techniques - Year 2008 and Onward <br />For prime farmland, the Lift A material is moved by large dozers to the west of the pit as it <br />advances west. A temporary elongated stockpile of approximately 125 feet wide is made along <br />much of the entire north-south distance of the pit. A second temporary elongated stock pile of <br />the Lift B material is made in the same manner which is located immediately east of the Lift A <br />pile. The Bench 1 subsoil is taken directly from the area in advance of the pit using the mine <br />shovel or large front end loaders into large off highway trucks. These trucks will utilize a loop <br />road where most of the material will be directly placed behind the pit in areas that have the <br />lower mine spoil already graded. The Lift B pile is then loaded with the mine shovel or large <br />front end loaders into the same large off highway trucks and dumped in areas that already have <br />the suitable Bench 1 material already graded. It is best for the mine to do direct placement of <br />Lift B and then Lift A. In some cases, this cannot be done and stockpiles must be utilized. The <br />existing and future mine stockpiles are shown on Map 2.05.4-4. The stockpile locations shown <br />on this map are approximate. The methods of how to determine the stopping point of stripping <br />Lift A, Lift B and the Bench 1 material are described in Section 2.04.9. <br />For non - prime areas, the procedures are basically the same with the only difference being that <br />Lift A and B are combined in a Mixed top lift in the non prime areas. <br />0 (Revised Nov 2008) 2.05.4(2)(d)-22