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PPPI7 \' <br /> CROSSFIRE AGGREGRATE EXHIBIT E <br /> SERVICES,LLC <br /> as materials from clearing and grubbing, asphaltic cement,concrete rubble, Portland cement concrete <br /> rubble, and excavated soil and rock may be used for backfill on-site for reclamation and road <br /> maintenance. <br /> Holes <br /> There will be no auger holes,excavations, or shafts left open on the property. <br /> Maximum Slopes <br /> For most areas on the perimeter of the mined areas slopes of 1V:2H or less as proposed are compatible <br /> with surrounding conditions and land use. In some locations,final slopes may be steeper to match <br /> adjacent hillside and cliff slopes. Areas with slopes steeper than 1V:2H will be reviewed by an engineer <br /> for stability and stabilization,such as but not limited to,grouting, placement of sandbags, block walls, <br /> such as Keystone TM or similar,wire mesh,or other retaining structures as needed. <br /> Notice of Other Backfill <br /> The Applicant will notify the Division if other backfill is used. Use of clean construction debris such as <br /> soil, subsoil,waste rock, overburden, clean Portland or asphaltic cement,and concrete rubble for <br /> backfill to be covered by soil is proposed. No acid bearing materials,tailings or other toxic or potentially <br /> toxic materials shall be used. When in doubt,standard characterization methods shall be used to <br /> evaluate the suitability of such materials for use on site. Records of off-site sources of backfill material <br /> shall be maintained for the life of the operation in accordance with DRMS requirements, including <br /> notarized certification statements, as needed. <br /> Prevention of Unauthorized Release of Pollutants to Surface Water <br /> The Applicant will handle chemicals,equipment, materials,and mined material to be disposed of off-site <br /> in a way to prevent unauthorized release of pollutants to surface water. <br /> Prevention of Unauthorized Release of Pollutants to Groundwater <br /> The Applicant will handle chemicals equipment material mined handled or disposed off-site, in a way to <br /> prevent unauthorized release of pollutants to groundwater. <br /> General Water Hydrology and Water Quality <br /> Hydrology and water quality issues are addressed at length in Exhibit G:Water Information. The <br /> Applicant will comply with applicable water rights, laws, and regulations,and water quality laws and <br /> regulations. No dredge or fill to any waters of Colorado or the United States is proposed and no <br /> temporary or large siltation structures will be placed except as required by permits and will be removed <br /> in accordance with those permits. No storm water structures are proposed which are intended to retain <br /> storm water for longer than 72 hours. <br /> Prepared by Tegre Corp. <br /> 1199 Main Ave., Suite 101 ){ <br /> Durango, CO 81301 <br /> (970)828-1811 <br />