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Permit M-1977-493—Climax Mine <br /> that may not be favorable for final reclamation and difficult to remove mechanically due to steep slopes and the <br /> high coarse fragment content. <br /> E-6.1.1 Direct Haul Reclamation Cover Salvage <br /> Climax recognizes the advantage to reclamation provided by directly hauling salvaged reclamation cover <br /> materials to final graded backfill whenever possible. Direct haulage of reclamation cover will improve the transfer <br /> of nutrients, organic matter, microbial populations, and residual native seed bank. When direct haulage of <br /> reclamation cover is performed outside of the active growing season, increased volunteer growth of plant <br /> propagules is supported. The following reclamation cover removal options will be considered when the salvaged <br /> soil is being directly hauled and placed on final graded backfill: <br /> 1) To reduce compaction and destruction of soil structure, consideration of soil moisture content will be utilized <br /> to optimize when soil moisture levels are sufficient to reduce dust yet dry enough to reduce soil mucking. <br /> 2) Stripping of reclamation cover from the bottom of drainages should be given priority to prevent contamination <br /> of soil by disturbed runoff. <br /> E-6.1.2 Stockpiled Reclamation Cover Salvage Option <br /> Whenever possible, soil stockpiles will be located to reduce haul distances and avoid handling materials multiple <br /> times. Soils removed from OSF locations will primarily be used to reclaim OSFs and the mill area, but excess <br /> materials may be hauled for reclamation on TSFs. Soils removed prior to expansion of the Mayflower TSF may be <br /> direct hauled for placement on the Tenmile TSF and/or stockpiled for future reclamation of the Mayflower TSF. <br /> Reclamation cover for stockpiling will be handled similarly to directly hauled material and reclamation cover will be <br /> removed, hauled, and placed on appropriately located and designated stockpiles in areas shown in Figure F-02 <br /> (Exhibit F)or other suitable locations that may be designated in the future. <br /> E-6.1.3 Stockpile Cover and Erosion Control Plan <br /> Reclamation cover will be stockpiled in such a manner to reduce wind and water erosion and unnecessary <br /> compaction.The primary methods of erosion control for soil stockpiles are timely revegetation and/or the use of <br /> temporary erosion control measures such as surface roughening, surface mulches, berms, ditches, or small <br /> sediment traps. Reclamation cover stockpiles will generally be constructed with 2.01-1:1 V or flatter slopes. <br /> Stockpiled reclamation cover will be seeded with the temporary revegetation seed mixture (Section E-7.1.1). The <br /> estimated quantity of soil that will be generated during future mining activities is discussed in Exhibit I: Soil <br /> Resources. <br /> E-6.1.4 Temporary Reclamation Cover Stockpiles <br /> In limited situations, reclamation cover materials may be temporarily stockpiled or windrowed near active <br /> operations rather than placed in permanent stockpiles. These situations would occur when the salvaged <br /> reclamation cover is needed for current reclamation, but the area is not immediately ready for soil to be respread. <br /> Temporary reclamation cover stockpiles will be seeded with the temporary seed mix as soon as possible after <br /> stockpile construction and clearly identified with appropriate signs. <br /> E-6.2 Reclamation Cover Placement <br /> There will be a nominal depth of 24 inches of reclamation cover material placed on areas designated for final <br /> reclamation. For approximately 3% of the TSF reclaimed surfaced offset 200 feet from the dam crests, the cover <br /> material thickness will be 48 inches to promote tree growth. Placed reclamation cover material may be ripped to <br /> reduce compaction prior to revegetation. Seeding will follow the application of soil during the first appropriate <br /> season. Detailed discussion of OSF and TSF reclamation is included in Section E-11. <br /> E-6.3 Soil Amendments <br /> Climax has applied biosolids to previously reclaimed areas under a permit issued by the United States <br /> Environmental Protection Agency(USEPA)and the Colorado Department of Public Health and Environment <br /> (CDPHE). Although the use of biosolids has successfully enhanced revegetation, Climax will no longer be using <br /> biosolids due to concerns with potential fluorinated compounds in the sources and will be officially discontinuing <br /> their use in 2024. Soil amendments other than, or in addition to, reclamation cover are sometimes required for <br /> Exhibit E E-5 May 2024 <br />