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to provide mulches, sediment control, and for other purposes. Other recycled <br />materials, including clean construction debris, such as materials from clearing and <br />grubbing, asphatic cement concrete rubble, Portland cement concrete rubble, <br />and excavated soil and rock, as certified by the operator and approved by DRMS in <br />accordance with Rule 3.1.5(9) may be used for backfill and related use on site for <br />reclamation and road construction/maintenance, as provided by haulers. (See <br />compliance discussion below.) <br />COMPLIANCE WITH RECLAMATION STANDARDS (6.4.5.(2) c.) <br />In demonstration of compliance with state standards (Rule 3. 1), the following <br />information is provided. Please refer to maps in Exhibit F. <br />Gradina (3 1 5(1)) and Backfillina (3.1.5(2)) <br />As originally approved, slopes around the edge of the final mined perimeter are <br />2H:1 V or flatter. If not cut to a 2:1 slope originally, backfill (placed as engineered <br />fill and compacted to approximately 75% Proctor density or better, as field- <br />determined), or left sufficiently distant from the permit boundary or buffer zone <br />boundary to cut and fill to a 1 V:2H slope or flatter. Otherwise, the final reclaimed <br />surface will be approximately the same slope as the original surface, and <br />backfilled and graded to provide for protection of roads and other post-mining <br />structures, good drainage, and intended use as irrigated pasture/hay land. As <br />stated in the original application, the 2:1 slope around the perimeter is intended <br />to maximize the land which can be cultivated and irrigated. See cross-sections in <br />Exhibit F. As discussed in Exhibit D. <br />Grading to control erosion siltation and prevent damage (3.1.5 (3)) <br />Grading will be done so that erosion and sediment is controlled on affected <br />lands and so that there is no damage to areas outside the effected land. All <br />highwalls (mining faces), including pre-law, will be eliminated. All slopes greater <br />than 2:1 will be located at least 50 feet from all exterior property boundaries and <br />a horizontal distance equal to or greater than the height of the cut slope and <br />any natural change in elevation between the back of the cut slope and the <br />permit boundary, to prevent off-property damage due to slope failure, and to <br />prevent potential slides or other damage on affected lands or outside the permit <br />boundary. No mining, disturbance, or reclamation is planned within delineated <br />floodplains (see Exhibit G). No surface discharge is planned; if surface discharge <br />of water is necessary, detention basins, outfall armoring, and other techniques <br />will be employed to prevent discharge of sediment and siltation off-site. <br />Performance as soon as feasible (3.1.5(4)) <br />Some areas will be reclaimed immediately upon completion of work. However, <br />for most of the affected area (including areas for plants and stockpiles), the time <br />between initial disturbance and final reclamation will be vary from one to ten <br />years. The original plan to mine in five-acre blocks and reclaim in ten-acre blocks <br />with a two year lag-time was not able to be carried out because of additional <br />space requirements for plants and stockpiles, which is expected to continue for <br />Exhibits for 112(c) AM-02 Application -M-1994-108-2010- Page 20