2025-09-26_REVISION - M2004025 (5)

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MINING PLAN EXHIBIT C I. General Plan The property boundary has been surveyed on site. Map E-1 shows the mining plan. This permit is not within the 100 year floodplain, so it is not necessary to worry about containment of pond water during a 100 year event. The berms also serve the purpose of temporarily storing the topsoil from the mine pit and facilities areas. All side slopes for the temporary piles will be maximum 2.H:1 V. Once mining is terminated,these piles will be used for reclamation. Also,the overhead cable television line has been removed. As shown on Map E-1,the plan of operation is to initially strip the topsoil from the mining area and stockpile it, which is approximately 8.07 acres. This material is expected to average 0.25 feet in thickness,therefore the volume to be moved is 3255 cubic yards. The overburden stockpile(berm) area allocated at the eastern side of the permit area as shown on the map. The stockpile will have an average height of 10 feet and will be seeded immediately with the seed mix described in the recla- mation plan. No slopes of the stockpile will exceed 2H:1.0V. The pile shown on Map E-1 at an average height of 10 feet and a length of 350 feet and a width of 25 ft is the remaining material after placing material on the lake slopes,which is approximately 1620 cubic yards, therefore,the pile area is adequate. There is also a topsoil pile east of the lake and west of the AR1 area holding approximately 4,000 cubic yds, which should be adequate for reclamation. A Cat D-8 or D-9 dozer is expected to perform the stripping and stockpiling. Scrapers could also be used. Once this work is completed,the gravel excavation will begin. This excavation will begin on the north and west portions of the pit area, where little overburden occurs. Therefore, no overburden stockpile is needed. A 950B loader will be used to push or carry the gravel to the pit facilities. It is possible that other equipment may also be used in the material excavation. Map E-1 shows two cross-section lines: A-A' and B-B', which are shown on Map E-3 Cross Sections. These cross-sec- tions show that the pit will be excavated to a 2H:1 V slope to the bottom of the gravel. than the rest of the area. However as mining proceeds this point in time slopes will be mined to 3H:1V. We are estimating approximately an area 150 ft x 380 ft x 10 ft, which equals about 30,000 tons of gravel. Dewatering will not be necessary due to the mining method which keeps all water in the pit, while mining one area at a time. Shale will not be exposed to the air. Mining will occur to no deeper than 1' from the top of the Mancos Shale. There will be no excavations into the Mancos Shale. Topsoil and overburden will be removed during mining and used to backfill the slopes from 2H:1 V to 14 North Fork Pit March 04