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(3) All grading shall be done in a manner to control erosion and siltation of affected lands. All <br /> means will be taken to prevent soil erosion. No highwalls will be left after mining. Best <br /> Management Practices will be used to protect areas outside the affected land from slides and <br /> other damage. No highwalls are planned at this open pit mine. <br /> (4) All backfilling and grading will be completed as soon as feasible after the mining process. <br /> The operator will establish reasonable timetables consistent with good mining and <br /> reclamation procedures. Grading of backslopes will be concurrent with mining, and the pit <br /> floor will be contoured for seeding as mining proceeds. Backsloping will be synchronized with <br /> mining as stated above. Topsoiling will be accomplished after mining has moved away far <br /> enough to make it practical for seedbed prep and seeding. In addition, time of year and <br /> weather conditions will play a role in this timing. The NRCS recommendations will be followed <br /> for seeding and time of year to plant. <br /> (5) No refuse will be generated by this mining operation for cleaning and preparation of <br /> substances mined. No acid-forming or toxic-producing materials will be mined or used for <br /> processing at this sand and gravel mining - processing plant. Therefore, no plans have been <br /> developed for their handling. <br /> (6) There will not be any drill or auger holes unfilled after mining. All exploration will most <br /> likely be done with small bore coring by a trained crew or by backhoe in selected areas, and <br /> after discovery, all holes shall be backfilled as soon as possible. No adits or shafts will be <br /> employed in this open pit. <br /> (7) Maximum slopes and slope combinations shall be compatible with the configuration of the <br /> surrounding conditions and selected land use. Where the pit does not daylight, backsloping <br /> during mining will be completed at a slope of 3H: 1V or flatter. No lakes or ponds are <br /> designed for the final reclamation, which is rangeland. Therefore, no swimming areas are <br /> proposed. <br />