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Holes, etc. (3.1.5(6)) <br />There are no drill holes, auger holes, adits or shafts to reclaim. <br />Maximum slopes (3.1.5(7)) <br />For most areas on the perimeter of the mined areas, slopes of 1 V:2H or less, as proposed, are compatible with <br />surrounding conditions and land use. In some locations, such as the western edge of the mined area at the <br />edge of the valley floor, final slopes may be steeper to match adjacent hillside and cliff slopes, as discussed <br />above. See Table E -1. Areas with slopes steeper than 1 V:2H will have engineer review for stability and <br />stabilization measures (such as but not limited to: grouting, placement of sandbags, block walls (such as <br />Keystone TM or similar), wire mesh, etc.) or have retaining structures as needed. <br />Use of farm equipment (3.1.5(8)) <br />There is no intent to use farm equipment except as feasible for seeding as part of reclamation. Access roads is <br />and will be usable by standard ranching vehicles and equipment. <br />Notice of other backfill (3.1.5(9)) <br />The Applicant will comply with this requirement to notify the Division if other backfill is used. Use of clean <br />construction debris, such as soil, subsoil, waste rock, overburden, clean Portland or asphaltic cement concrete <br />rubble, for backfill, to be covered by soil as appropriate for intended post- mining use, is proposed. No acid - <br />bearing materials, tailings, or other toxic or potentially toxic materials shall be used. When in doubt, standard <br />characterization methods shall be used to evaluate the suitability of such materials for use on site. Records of <br />off -site sources of backfill material shall be maintained for the life of the operation, in accordance with CDRMS <br />requirements, including notarized certification statements as needed. <br />Prevention of unauthorized release of pollutants to surface water (3.1.5(10)) <br />The Applicant will handle chemicals, equipment, materials, and mined material to be disposed of on -site in a <br />way to prevent unauthorized release of pollutants to surface water, and comply with this requirement. <br />Prevention of unauthorized release of pollutants to groundwater (3.1.5(l 1)1 <br />The Applicant will handle chemicals, equipment, material mined, handled, or disposed of on -site in a way to <br />prevent unauthorized release of pollutants to groundwater, and comply with this requirement. <br />General water hydrology and water quality (3.1.6(1)) <br />Hydrology and water quality issues are addressed at length in Exhibit G. The Applicant will comply with <br />applicable water and water rights laws and regulations, and water quality laws and regulations. No dredge or fill <br />in waters of Colorado or the United States is proposed, and no temporary or large siltation structures will be <br />placed except as required by permits,2 and will be removed in accordance with those permits. No storm water <br />structures are proposed which are intended to retain storm water for longer than 72 hours. <br />Earth dams (3.1.6.(2)) <br />Mining will be done only in areas which will not present potential for negative impact on the stability of any off - <br />site earth dams. Except for storm water control systems in and around plant areas, there will be no earth or <br />other dams constructed: for the most part, water features (such as storm water detention and retention basins) <br />will be incised. Those berms and basins will contain less than 1.0 acre -feet of water at any time, including <br />immediately following 24 -hour, 25 -year storm events, except as approved by the Colorado Division of Water <br />Resources, and are not planned to contain more than 10.0 acre -feet of water. Mining is expected to remain <br />above the normal ground water table. No permanent ponds are planned. <br />2 Primarily CDPS storm water permits. <br />C &J Gravel Products, Inc. Page 22 01 JAN 2015 <br />Application for Permit: Two Rivers Pit M -2015- C &J- TRP -V5 -001 <br />