2025-02-13_REVISION - M2020007 (6)

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EXHIBIT D MINING PLAN (CONT) EXHIBIT C 1 - MINING PLAN MAP. The aggregates from Phase lA were removed and stored on the Plant Site area in Phase 3 and processed once the processing plant was constructed. This Phase has become a settling pond and part of the water recycling operation. Phase 1A is the settling pond that will be used for the fines from processing from the development of all reservoirs developed on the permit area. As mentioned above, the proposed mining sequence may change due to unforeseen circumstances such as market conditions, variations in the natural deposit, agreement restrictions with structure owners, etc. At this time, the plan is to mine them sequentially from 1 thru 6 as shown on the maps . The exception to this sequence is Phase 3, which will be mined last if material from the eastern Phases can be conveyed across the railroad and HWY 85 . The smaller Phases 4A, 4B, and 5A will be mined prior to, or in conjunction with, mining beginning in the corresponding larger reservoir phases (Phases 4, 5, 6) in order to provide areas for disposal of excess overburden and processing fines from those areas . Sight berms will be constructed along the Railroad ROW on the west sides of Phase 4, 4B, 5 and 6, similar to the sight berm construction noted for Phase 3 above. The following mining methods will apply to all of the reservoir Phases . Operations will begin in each Phase of reservoir construction by stripping the area where mining will start . Initially a 50 acre area will be stripped and periodically as mining progresses it will be extended so there may be as much as 100 acres needing resoiling at any one time as each Phase is mined. The topsoil needed for resoiling the above water areas will be separated from the overburden and stored around the mining area for use in reclamation. Once enough topsoil is salvaged to resoil the above water disturbed areas with an average of 6 12 inches, the rest may be sold. These stockpiles will be placed strategically around the reservoir areas in progression with mining, and in some cases the stripped topsoil will be placed on areas where grading and shaping are complete so it only has to be handled once. During the initial stripping, a slurry wall pad will be built around the reservoir Phase mining area using the excess topsoil and overburden. When the slurry wall pad has been completed, the bentonite slurry wall construction will begin. This is done by excavating a trench in the pad that is keyed into the underlying bedrock and filled with a mix of overburden, bentonite and water to create the slurry that becomes the liner. L.G. Everist, Inc. Ragsdale Reservoirs Revised February 11, 2025 16