2008-01-30_REVISION - M1980085 - Laserfiche WebLink

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Additional information on water handling is provided in the Water Resource Protection Plan, which is included in Appendix A. Although Woody Creek is within 200 feet of the permit boundary, the 100 year floodplain does not get near the mining areas or the topsoil storage areas. 7. Import Material Over the past 6 years, the amount of imported fill material into the pit has increased significantly. It is estimated that the amount of fill has now exceeded 700,000 cubic yards. The material has been used to fill the mined out northern portion of the original mining area. The imported material has basically filled this area to the approximate original contour. All imported material must be certified in writing to be Clean Material by the importer. In addition, a Soil Sampling Protocol has been established to ensure that the material is clean, which involves Elam testing the material according to procedures outlined in the Water Resource Protection Plan, which is included in Appendix A. It may be possible to sell some imported material to various entities in the community. For this reason, Maps C-2 and C-5 do not show the contours for areas filled with imported material. The more material is imported, the more the final contours will approximate the original contours. There is no way to predict how these volumes will work out; therefore, the worst case is shown on the maps, which is maximum excavation and no filling. 9. Dust Control Mitigation Many measures (BMP's) are used on site to control dust. All crushing is enclosed and has water sprays in the enclosure to control dust. The stacker conveyors have sprays at the discharge points and the screen plant also utilizes water sprays. Internal roads will be treated with magnesium chloride on an as needed basis. A water truck is present on site to water active dirt roads and other areas that may produce dust. Vagneur Pit June 07 D-15