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3.1.5 Grading will be conducted to produce a final topography of a recharge basin having side slopes of maximum 3 :iV. The operator proposes to backfill unsold processed (crushed/screened) materials and reject materials 1 to the excavation. Backfilled materials will be adequately compacted to ensure stability. No toxic or acid-forming mater als are known to exist on the site and no toxic or acid-for ing materials will be introduced into the mixed materia . Grading will be done in a manner to control erosion and siltation of the affected area and will protect are s outside the affected land from slides and other damage. All highwalls will be reduced to a maximum slope of 3H:1V. The operator proposes to complete reclamation of thus site within 5 years from the end of active mining. All refuse will be removed and disposed of, off-sit No acid forming or toxic materials are known to exist on the site. No drill holes, auger holes, adits or shafts are pro~osed for this operation. Maximum slopes within the reclaimed area site will b~ 3H:1V. 3.1.6 The operator is entering into agreement with t e Rio Grande Canal Water Users Association to utilize the nactive portions and ultimately reclaimed portions of the ex avated pit as a recharge basin for waters owned by the Cana Association. 3.1.7 The groundwater system in the area of this ope ation is over appropriated; recharge activities on this site 111 have a positive effect on the groundwater hydrology of th area and will pose no threat of injury to existing water fights. No toxic or acid-producing materials are to be mined on the site and no toxic or acid-producing materials will b introduced into the mined materials during processin Fuels, oils, and anti-freeze utilized to power and maintain equipment will be temporarily stored on-site during proceaeing operations. These materials will be stor d on- aite to prevent their accidental release to surface stets or groundwaters; oils, lubricants, and antl-freeze will be stored inside portable van trailers and fuel will be stored in a fuel truck which is parked inside a bermed cont inment area. Both surface and groundwater quality will not affected. 3.1.8 No endangered species or critical habitats have been observed in the area surrounding the proposed site. T e proposed mining operation will have a minimal effect n wildlife species or their habitats.