Laserfiche WebLink
3) Bedrock Groundwater ouality: Significant trends in water <br />quality were not noted in the bedrock monitoring wells. <br />The #5 mine discharge showed a slight increa:ae in TDS, <br />whereas the 7 North Angle discharge showed a slight <br />decrease in TDS. The decrease in the 7 North Angle <br />discharge was explained by the fact that TDS levels were <br />previously elevated during a pump malfunction where the <br />groundwater had time to equilibrate with respect to TDS. <br />The operator predicts that the maximum TDS of 1474 mg/L <br />observed in the 7 North Angle discharge represents the <br />maximum predicted postmining TDS concentrations. This <br />prediction does not appear to be in the PHC section of <br />the permit and should be included during the next renewal <br />or midterm review. <br />If you or the operator have any questions, please call. <br />cc: Larry Routten <br />