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McClane Canyon Mine <br />CDPS Permit CO-0038342 <br /> <br />Comments for Outfall 001 <br />Outfall 001 had its first discharge since May 2015. The discharge exceeded the limits for <br />TR Iron. The TR Iron value was 2210 ug/l. Previous discharges from outfall 001 during <br />September 2014, October 2014 and May 2015 had TR Iron values of 620, 540 and 690 <br />ug/l respectively. The water from this storm event carried wood chips and juniper berries <br />from up gradient Juniper trees. The water was discolored (slightly grayish). The only <br />explanation for the high iron values was this unusual water characteristic. <br /> <br />Outfall 001 also exceeded its limits for TSS. The operator will allow more settling time <br />in the pond to reduce TSS levels in the future. <br /> <br />Outfall 004 also exceeded its limits for TR Iron. The TR Iron value was 1350. The only <br />explanation for this exceedance is presented above. <br /> <br />Corrective Actions <br />The operator expanded the up gradient sumps so water has more time to settle before it <br />reaches the outfalls. <br />