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4/8/2019 State.co.us Executive Branch Mail-Climax Mine-5 Dam Seepage Return Line <br /> Climax Mine - 5 Dam Seepage Return Line <br /> 3 messages <br /> Kelts, Diana <dkelts@fmi.com> Mon, Apr 8, 2019 at 9:17 AM <br /> To: "Scott- DNR, Eric" <eric.scott@state.co.us> <br /> Cc: "Lazuk, Raymond" <rlazuk@fmi.com>, "Haag, James" <jhaag 1 @fmi.com> <br /> Eric, <br /> In September 2017 Climax notified DRMS of a leak in the 5 Dam Seepage Return Line within the Mayflower Tailing <br /> Storage Facility (TSF). Knowing that this line would eventually be abandoned, in August 2018 Climax submitted TR-28 <br /> with an updated EPP and a memo describing our plans to modify the seepage return line. Over this weekend our <br /> technicians observed the appearance of new 5 Dam seepage within the Mayflower TSF in the general vicinity of the <br /> previous leak and a significant drop in flow from the outlet at 3 Dam Pump Station, indicating that the 5 Dam Seepage <br /> Return Line was becoming plugged or possibly collapsing. Therefore, in accordance with the EPP (Section T-5.3.2)and <br /> the attached memo from TR-28, Climax is implementing Modification Plan 2 which diverts seepage to Mayflower TSF via <br /> the Quarter Cutout Valve and North Cutout Channel. Also attached is the memo from the FOR that was included in TR-28 <br /> indicating there are no stability issues with the dam from this modification. Climax will be evaluating whether to proceed <br /> with Modification 3 or Modification 4 during the 2019 construction season. <br /> Please let us know if you would like to discuss any of this by phone or during your next inspection at Climax. You can <br /> contact Raymond Lazuk at (719)486-7584 or myself at(719)486-7525. <br /> Thank you, <br /> Diana Kelts <br /> 2 attachments <br /> Memo 5 Dam Seepage Return Line Plans.pdf <br /> -� 1220K <br /> FOR Memo 5 Dam Seepage Return Line.pdf <br /> 60K <br /> https://mail.google.com/mail/u/1?ik=1481 af980f&view=pt&search=all&permth id=th read-f%3A1630259564844798509&simpl=msg-f%3A 163025956484... 1/1 <br />