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3. Provide an alternative source of water to support the historic well water use. <br />Additionally, if it is determined that installation of the slurry wall creates mounding or <br />shadowing impacts to surrounding structures or water resources, the applicant will take <br />appropriate corrective action. Impacts would trigger mitigation measures that may include, but <br />are not limited to: <br />1. Pumping from mounding areas to recharge ponds in shadowing areas. <br />2. Installing surface or underground drain systems to transport groundwater from mounding <br />areas to shadowing areas. <br />3. Diverting surface water flows to recharge ponds in shadowing areas. <br />Water Requirements <br />Water use or evaporative losses at the site are not expected to increase during reclamation <br />activities. Until installation of the slurry wall is complete, the existing SWSP will provide for <br />the replacement of alluvial groundwater evaporative losses. <br />Sources of Replacement Water <br />The replacement of consumptive uses is accounted for in the existing SWSP that is administered <br />by the SEO. As a component of the SWSP, the City of Greeley and Tri- Districts will provide the <br />necessary water rights to mitigate all consumptive water uses during reclamation. After <br />reclamation has been completed, there will be no permanently exposed groundwater at the site. <br />The reclamation plan will therefore not require a court approved water augmentation plan. <br />Water Quality <br />Reclamation operations shall comply with Colorado Department of Public Health and <br />Environment National Pollution Discharge Elimination System regulations and obtain a <br />Colorado Discharge Permitting System (CDPS) permit for stormwater management and <br />discharge flows to protect surface water quality on and off the site. The permit includes the <br />continued updating and implementation of a site Stormwater Management Plan designed to <br />prevent the contact and transport of potential contaminants to surface waters by stormwater <br />flows. <br />The depth to groundwater fluctuates by a couple of feet depending on the season, but averages . <br />approximately five feet below ground surface. Average depth of the existing lakes is about <br />15 feet below the water surface. Due to the absence of large quantities of potential pollutants on <br />site, the reclamation operation will not affect groundwater quality on or off the site. As stated <br />above, reclamation activities shall operate under a CDPS permit and Stormwater Management <br />Plan. The plan provides for regular inspections of potential contaminant areas such as mobile <br />equipment and fuel or lubricant storage locations. Inspections and best management practices <br />are incorporated into the plan to protect both surface and groundwater quality. <br />Treiber Lakes <br />DRMS 112 Permit Application <br />Page 16 <br />