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Shaping the Land- backfilling and grading <br /> SIDE SLOPES: <br /> 1. The mining will leave benched highwalls with the bench located about 2/3 to <br /> 3/4 the total height of the highwall. The bench will be wide enough for use as a <br /> one lane transportation corridor along the base of the overburden highwall. <br /> 2. The final slope will have a maximum steepness of 3:1 and will be produced <br /> mainly by cut and fill. <br /> 3. Where there is insufficient material available to complete the entire slope using <br /> cut and fill, material from nearby stockpiled overburden intended to help create <br /> slopes and cover the floor of the pit will be used to finish the slope. <br /> 4. Initially,the surface of the slope will be left rough to aid in absorption of <br /> precipitation and reduce the amount of erosion that could produce rills and <br /> gullies. <br /> PIT BOTTOM: <br /> 1. The bottom or floor of the pit will be left fairly smooth with a very gradual <br /> southward slope (about 1%). The surface composition will be a blend of gravel <br /> and sandy fines. <br /> 2. On top of this will be placed 8"to 12" of soil/overburden mix obtained from <br /> stripping the land in front of the mining area. <br /> 3. Seeding of the covered portions of the floor of the pit will occur as soon as <br /> planting conditions and seeding can be done. <br /> OLD AREAS AT THE NORTH END: <br /> 1. The older areas on the far northern end of the operation go back to the early <br /> days of the operation in the late 1970's. Thus,there is a menagerie of land types. <br /> 2. The western part along Charter Oak Ranch Road is covered with a strong grass <br /> growth that was planted decades ago but never released from bond. Presumably <br /> this could be used as topsoil, except there are better materials available <br /> elsewhere without disturbing such excellent revegetation that may never be <br /> created again due to climatic changes over the last 25 to 45 years. <br /> 3. The north central and eastern part of this area contains materials that were <br /> intended to be used in reclamation of the pit but are now generally too far from <br /> the part of the pit locations where they would be used and therefore too costly <br /> to move further than the northern portions of the pit floor. <br /> Fountain Pit Technical Revision#3 - June 2022 M-1982-155 Reclamation Plan Page 2 of 23 <br />