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clay liner cover material, which lies underneath the 50 ft x 50 ft ore pad area <br />shown on Map C -2B, will be excavated over a 3,600 square foot area (60 ft x 60 <br />ft). This material will be disposed of as part of the backfill material to be placed <br />when closing the portal. Interaction with water is not a concern since the majority <br />of water in the mine is from the ore zone. The calculated volume of pad material <br />is 267 cubic yards. <br />J. Treatment Ponds and Sludge <br />Re- vegetation <br />The sludge collected in the treated water ponds would be removed from the ponds <br />according to Technologically Enhanced Naturally Occurring Radioactive <br />Materials (TENORM) procedures, and shipped to a licensed facility for disposal. <br />Once the sludge is removed, the liner will be put in the venthole shaft prior to <br />sealing it. The ponds will then be restored to approximate the original topography <br />(relatively flat). The area will then be seeded. <br />The sludge volume after the 6 -year mine life is estimated to be approximately 160 <br />cubic yards. <br />The following seed mixture is specified by DOE to be used on DOE leases in this area. <br />This seed mix was developed in consultation with the BLM, and is recommended for use <br />on all affected acreage in this permit. Seed selection criteria were based on climate and <br />elevation ranges within these areas. Recognizing that surface and soil conditions, <br />nutrients, and available moisture can vary within these areas, successful establishment of <br />six or more of the twelve species is considered adequate. If the total number of species <br />seeded is less than that specified below, the seeding rates for the individual species will <br />be adjusted accordingly. All seed tags will be submitted to DOE for verification prior to <br />the seeding application. <br />