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Aggregate Industries,through the SEO well permit process gave notice to well owners within 600 feet of the mining <br /> boundary. The potentially impacted well owners entered into agreements with Aggregate Industries for protection for <br /> the senior vested water rights. The SEO well permit is attached in Exhibit G <br /> Potential Reclamation Impacts <br /> Once mining and reclamation are complete and dewatering pumps are turned off, potential impacts to surrounding <br /> wells from mine cell dewatering will cease. <br /> Reclamation Impact Mitigation Plan <br /> Although impacts and damages are not anticipated, it is the intent of the operator and property owners to operate <br /> responsibly and to mitigate damage to wells or structures that is directly attributable to the mining and reclamation of <br /> the Tucson South Resource site. <br /> If mine cell(or slurry wall) reclamation creates injury to surrounding properties,the applicant will take all necessary <br /> actions to remedy the injury. The approved well permit addresses potential impacts to wells within 600 feet of the <br /> Permit Boundary. <br /> Additionally, if it is determined that mine cell reclamation creates mounding impacts to surrounding structures or <br /> water resources,the applicant will take appropriate corrective action. Impacts would trigger mitigation measures that <br /> may include, but are not limited to: <br /> 1. Installing surface or underground drain systems to transport groundwater from mounding areas to shadowing <br /> areas. <br /> 2. Diverting surface water flows to recharge ponds in shadowing areas. <br /> Water Quality <br /> Mining and reclamation operations shall comply with Colorado Department of Public Health and Environment <br /> National Pollution Discharge Elimination System(NPDES) regulations. A Colorado Discharge Permitting System <br /> (CDPS) permit for stormwater management and discharge flows to protect surface water quality on and off the <br /> proposed permit area from mining and reclamation activities will be obtained. The permit includes the continued <br /> updating and implementation of a site Stormwater Management Plan designed to prevent the contact and transport <br /> of potential contaminants to surface waters by stormwater flows. <br /> The depth to groundwater fluctuates by a couple of feet depending on the season, but averages about 10 feet below <br /> ground surface. Due to the absence of large quantities of potential pollutants on site(no on-site processing or <br /> concrete or asphalt production),the mining and reclamation operations are not likely to affect groundwater quality on <br /> or off the site. As stated above, mining and reclamation activities shall operate under a CDPS permit and <br /> Stormwater Management Plan. The plan provides for regular inspections of potential contaminant areas such as <br /> mobile equipment and fuel or lubricant storage locations. Inspections and best management practices are <br /> incorporated into the plan to protect both surface and groundwater quality. <br /> Aggregate Industries Tucson South Resource <br /> Permit#M-2004-044112 Permit Amendment <br /> Page G-7 <br />