2012-10-29_PERMIT FILE - M2012045 (6)

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The Applicant/Operator does not propose to allow use of this proposed mining operation by the public. An MSHA approved contractor will conduct mining and the public will not be allowed on -site without a company representative. Part 46 of MSHA will be followed on this mine site. 3.1.5 Reclamation Measures — Materials Handling: (1) Grading: Very little site grading, relatively speaking, will be necessary. It is the intent of the Applicant/Operator to mine the final in -pit slopes at 3h: lv upon approaching the final in- pit slope configuration. The area where the zoned perimeter dam will be constructed will likely require the most extensive grading and this will occur early in the life of the mining operation. Areas used for stockpiles will require little grading since other than possible topsoil removal (such as for product and overburden stockpiling), these areas will not otherwise be disturbed. All excavated pipeline trenches will be backfilled with suitable bedding materials and excavated material. Any excess excavated material will be spread within the area disturbed for pipeline construction to blend with the surrounding terrain. All material excavated for construction of developed water resource supporting facilities will either be hauled for disposal within the mining area (cells) used for earthen berm and other construction purposes and/or spread within the bounds of the areas disturbed for construction of the any area that need fill for improving the land use. All material excavated for construction of the Excelsior Ditch relocation will either be used for permanent visual berms and /or construction of earthen dams (dependent on the quality of the material for such construction), limited pit backfill. (Given that the proposed post mining land use is developed water storage reservoir, backfill of the Pits with waste material is not a preferred alternative.) If off -site use of such material can be found and it is not needed for reclamation, then these materials will be transported off site. Some stockpiles of overburden and topsoil may be reclaimed in -place if they cannot be used on -site or sold or disposed of off - site. These stockpiles will be graded to 3h: lv slopes, have topsoil placed where needed, and seeded with the approved seed mix. (2) Backfilling: Where backfilling is required as noted above, it will be done in lifts and compacted as specified in the construction designs. The site is in a net positive condition as to material need for on -site construction, therefore the Operation has no need to import fill. No toxic or acid - forming waste materials will be imported or disposed of on -site. (3) All grading shall be done in a manner to control erosion and siltation of the affected lands, to protect areas outside the affected land from slides and other damage: All grading shall be done in a manner to control erosion, siltation, and sedimentation. The final design of the water storage reservoir will incorporate storm water structures such as emergency spillways. Best Management Practices of mining and reclamation will be used to protect areas outside of the affected area from slides and other damage. More specifically, appropriate erosion control methods will be used where drainage into the mining cells cannot be ensured. Where it is safe for equipment and operators, grading will be done on the contour. The final slopes for the cells will be incised into the existing ground surface and final interior cell slopes will be mined to 3h: lv. These designs will ensure stable dam embankments and structures. In addition, the permit boundary will be adequately marked to prevent equipment operators from conducting mining and reclamation activities outside the approved permit boundary. It is therefore unlikely that grading will result in affecting areas outside the affected area or that the interior slopes of the three cells will be unstable.