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• If there is insufficient topsoil available for site reclamation, topsoil will be purchased to make up any <br /> topsoil deficit. <br /> The attached soil survey shows soil unit 6102A with available soils to 22 inches, gravelly sandy loam. <br /> Unit 7702E has soil suitable for site reclamation, 0-5 inches sandy loam.The other on-site soil units <br /> (7700B and 7755B) are too shallow and rocky to be recoverable (0-2 inches cobbly silt loam). These <br /> are high mountain soils in an area of non-acid host rock. <br /> There are no other changes to the existing and approved permit. <br /> (ii) State at what point in the mining plan the site will be seeded. <br /> Explain how the seedbed will be prepared to eliminate compacted <br /> conditions. State the type,application rate,and soil incorporation <br /> methods of fertilizer application, if any: <br /> No site reclamation will begin (other than leach field reclamation) until the underground mining <br /> activity is complete. Once site reclamation begins, the mine operational buildings and structures <br /> may be removed, or to include the Caribou office/shower building, snow roof, fuel tanks, the new <br /> office/dry facility, and Cross ore storage shed. (The sewer line and leach field will be left as <br /> constructed). These structures will be dismantled and removed from the site at the cessation of <br /> mining operations and before the grounds are graded to final contour and plant growth material <br /> replaced. All materials resulting from structure demolition will be hauled to an approved landfill for <br /> disposal. All remaining explosives will be disposed according to regulation and approved methods. <br /> Any remaining fuels, lubricants, toxic substances (if any) will be disposed in approved facilities. Any <br /> concrete foundations and paved areas will be broken up and buried on site. (GIR reserves the right <br /> to retain facilities and structures as part of the post mining land use at the request of the <br /> landowner. If facilities and structures are left as part of the post mining land use, they will meet <br /> Boulder County building and zoning codes.) <br /> The remaining disturbances, including the Cross and Caribou surface parking areas, will be ripped <br /> and scarified as needed, recontoured, as necessary, for drainage control, and integrated into the <br /> surrounding undisturbed topography, then have a plant growth medium replaced. The road will <br /> be left for the post mining land use, at the request of the land owner. (GIR reserves the right to <br /> retain all or some of the parking areas at the request of the land owner.) <br /> If buildings, facilities and parking areas are removed, the ground surfaces will be reclaimed to meet <br /> the post-mining land use goal of forest land and residential.The area will be graded to promote <br /> drainage. The final surface will be contoured to minimize erosion, ponding, or slope failure. Finally, <br /> the area will have a plant growth medium replaced and revegetated on those areas returned to <br /> forest land. <br /> Ponds one and two will be removed, including disposal of the pond liner at an off-site, approved <br /> facility as requested by Boulder County. Any sediment on the liners will be sampled and removed if <br /> required by regulatory requirements and disposed of in an approved facility. The pond areas will be <br /> regraded, covered with a plant growth medium and revegetated in the same manner as other <br /> disturbed areas at the site. Regrading will occur to provide positive drainage, preventing ponding. <br /> GIR will take measures appropriate to the subgrade where topsoil is being replaced. Such <br /> measures may include roughing the surface in order to gain a mechanical bond between the <br /> subgrade and the replaced topsoil. Where the subgrade is of acceptable quality, it may include <br />