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• • Soil Pit -Soil Fertility <br />Two deep backhoe pits were excavated at geographically located sites. A total of eight (8) samples <br />were collected from the two pits. The sampling included the reapplied topsoil to the underlying spoil <br />contact All reapplied topsoil samples have "good-rated" suitable quality material. The 2006 Soils <br />Report is attached and provides the detailed write-up, analytical data, and sampling locations from the <br />2006 sampling effort. <br />• Topsoil Balance <br />The topsoil balance is completed to ensure topsoil is salvaged, stockpiled, and replaced as <br />recommended and approved in the permit, and, if necessary, to readjust the topsoil salvage and <br />redistribution thickness. <br />Topsoil Salvage and Storage. The life-of--mine disturbance azea from which topsoil was salvaged <br />(847.] acres) and the topsoil stockpile sites as of December 31, 2006 are shown on the Yoast Mine <br />2006 Reclamation Map. During 2006, there was an additional 0.8 acres of topsoil salvaged, all of <br />which was live handled and respread on graded spoil, in addition topsoil was removed from stockpiles <br />and reapplied over graded spoil. <br />The volume of topsoil remaining is stockpiles as of December 31, 2006 was detettnined by field <br />stuvey. The stockpfle volumes as of December 31, 2006 ate listed in Table 06.1. As of December <br />37, 2006, there were 183.0 acre-feet of stockp$ed topsoil remaining in the mining area. <br />• Topsoil Replacement Topsoil was replaced on 142.5 acres of disturbed azea in 2006. <br />Topsoil Replacement Thickness. The topsoil balance as of December 31, 2006 for the remaining <br />life-of--mine is calculated as follows: <br />Mine Area <br />Total disturbance area <br />Permanent Facilities & Topsoil replaced <br />Disturbance area requiring soil <br />Soil in stockpiles (fable 05.1) <br />Mean replacement depth available <br />= 847.1 aces <br />= 705.2 acres <br />= 141.9 acres <br />= 183.0 acre-feet <br />= 1.3 feet (15.5 inches) <br />By dividing the topsoil available by the area requiring topsoil replacement, we arrive at the furore <br />topsoil balance thickness of approximately 1.3 feet for the remaining disturbance area. This <br />generalized topso$ balance does not account for any area variations or for permanent facilities not <br />requiting topsoil; it is strictly an area-wide average. <br />During 2006, an exhaustive sampling was conducted over the entire mine site on a 500 ft. grid. The <br />data is presented on the 2006 Soil/Spoil Map and on Table 06.4. The overall topsoil replacement <br />depth for the areas reclaimed to date is 22.0 inches. <br />Tab 21, Minesoil Reconstmction, in the PAP, indicates an estimated average of 1.8 feet (21.6 inches) <br />will be replaced over final graded spoil in the mine area and 1.1 feet will be replaced along Haul <br />Roads A and B and the facilities in Section 8. As determined by the 2006 mine wide sampling, topsoil <br />replacement to date of 22.0 inches is right in line with the original projections of 21.6 inches. <br />• <br />