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Requirement <br />Requirement <br />citation <br />Reviewed <br />Comment <br />Each pit disrupts the potentiometric surface. After final <br />S. Restoration of <br />backfilling, the pits can be expected to show full recovery <br />ground water <br />CDRMS <br />of the potentiometric surface outside of the pits and water <br />recharge to <br />regulation <br />yes <br />table (unconfined) conditions inside the pits. No <br />approximate <br />4.05.12 <br />significant formation of surface spoil springs is expected <br />due to the flat topography; therefore, there will be no loss <br />premixing rate <br />of ground water flows to surface waters. <br />The Probable Hydrologic Consequences section of the <br />permit application predicts no appreciable impacts to <br />ground water systems outside the permit area. Water <br />quality data from well DH -96 indicate there have been no <br />adverse impacts to ground water in the Ennis alluvium and <br />T. Prevention of <br />eolian sand outside the permit area, several thousand feet <br />adverse impacts <br />CDRMS <br />downgradient from the mine's pits. Sulfate levels reported <br />to ground water <br />regulation <br />yes <br />on March 28, 2013 indicated sulfate levels were at 800 <br />systems outside <br />4.05.11 <br />mg/1 which is above the highest baseline value reported. <br />the permit area <br />However, the September 12, 2013 sample resulted in a <br />sulfate level below the baseline levels. Sulfate levels <br />reported from well DH -122 completed in Ennis alluvium <br />up- gradient of the mine yielded sulfate levels above the <br />baseline level was well. <br />Page 3 <br />