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The mine pump at IORT began discharging to Foidel in September 2008 under an emergency discharge permit <br />issued by CDPHE. In early 2009, TC experienced difficulties in consistently meeting WET and iron standards at <br />the pipeline discharge source. In the second quarter of 2009, TC halted all discharge at the discharge source <br />permited under the emergency discharge permit, and re- directed IORT dewatering to the Area # 1 Pit. The Pit <br />overflow goes via DRMS site 7 to Pond D, which may in turn flow into Foidel Creek via CDPS Outfall 005A <br />(a.k.a. site 84). As indicated earlier, future treatment of I ORT mine water is under consideration. <br />Mine Inflow: No unusual occurrences of inflow were noted as a result of the Annual Mine Inflow study. <br />Inflows are within the projected flows presented in the permit. Water quality has not changed significantly and <br />appears to mirror the quality of the adjacent spoil water. It appears that the elevated EC and iron readings seen in <br />2012 are associated with the water that has pooled in the mine sump, which is in contact with the overlying <br />Marine Shale. This contact has provided the opportunity for additional salts and iron to be leached from this unit. <br />The pumping of the sump should see a decrease in the elevation of the pool over time, with an anticipated <br />decrease in the EC and concentration of iron in the effluent. <br />Subsidence: During 2014, no ponds or surface creeks were undermined or subsided. No subsidence ponding <br />overlying historical mined areas along Foidel Creek, or Middle Creek was evident in 2014. No ponding was <br />evident along Fish Creek in 2014, with the exception of a small permanently ponded area around alluvial well <br />AVF -15 that occurred around 2003. No significant/adverse water quality impacts relating to subsidence were <br />evident in 2014. <br />19 <br />