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Aquifers are Protected by <br />the Following: <br />4 <br />Sampling surface runoff prior to <br />discharge from sediment pond <br />Sampling of alluvial aquifer of St <br />Charles river <br />Sampling of Dakota aquifer <br />300 feet of aquitards between mine <br />and nearest aquifer <br />Controls in the pit to minimize blasting <br />residue introduction into water <br />