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5. leachate impacts on bedrock ground water - leachate dischazging into <br />bedrock in the toe of the pit will not cause material damage to bedrock <br />aquifers because the bedrock receiving the leachate is an unmined <br />wedge of bedrock that would transmit the leachate less than 1000 feet <br />to the bedrock's outcrop on the banks of Trout Creek or to the <br />bedrock's subcrop beneath the creek's alluvium (Exhibit 2.5-25). <br />6. leachate impacts on alluvial water - leachate transmitted to Trout <br />Creek alluvium through the unmined wedge of bedrock at the toe of <br />the pit will not cause material damage to Trout Creek alluvial water <br />because the leachate will be sufficiently diluted by the fresher alluvial <br />water (page 2.5-104). (L.eachate will not dischazge to Oak Creek <br />alluvium because Oak Creek is updip from the pit.) <br />I.eachate impacts on surface water - L.eachate discharging to the <br />ground surface in spoil springs will not cause material damage to <br />surface water in Trout Creek because the leachate will be sufficiently <br />diluted by the fresher stream water (page 2.5-104). Maximum TDS of <br />1186 mg/1 is predicted for Trout Creek immediately downstream from <br />[he Edna Mine. (leachate will not dischazge to Oak Creek surface <br />water because Oak Creek is updip from the pit.) <br />Edna Mine 21 Permit Renewal No. 4 <br />