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T45 <br />Climax Molybdenum <br />A Freeport- McMoRan Company <br />May 08, 2014 <br />Via Email and Certified Mail #: 7006 2150 0001 8831 9933 <br />Mr. Peter Hays <br />Division of Reclamation, Mining and Safety <br />1313 Sherman St., Rm. 215 <br />Denver, CO 80203 <br />COLORADO OPERATIONS <br />Henderson Mill <br />19302 County Road 3 <br />Parshall, CO 80468 <br />Phone (303) 569 -3221 <br />Re: Follow -up Notice for Mill #1 Cutout Line Leak, Permit No. M- 1977 -342 <br />Dear Mr. Hays: <br />I?EFCI Veo <br />MAY 2 2014 <br />DIVISION OI <br />M/NINS4ND SA MAIDN <br />Henderson Mill is providing this written follow -up notice to a phone call made to you on May 5, 2014 <br />pursuant to Rule 8.1 and 8.2 of the DRMS Rules and Regulations. <br />This notice is regarding tailing slurry which escaped through a broken HDPE pipe associated with the #1 <br />Cutout Line, which occurred May 5, 2014 at approximately 8:00am. The #1 Cutout Line is designated as <br />an environmental protection facility in Henderson's Environmental Protection Plan. The leak was <br />discovered at 8:00am. Originally the leak was believed to have started minutes before the time of <br />discovery, but further investigation indicated there had been a slow leak on the underside of the pipe <br />before the failure occurred. When the failure occurred on May 5th an estimated 500 -100 gallons of tailing <br />slurry escaped. <br />(a) After discovering the issue, Henderson employees immediately stopped flow to the #1 <br />Cutout Line stopping flow out of the leaking line. <br />(b) Mill tailing slurry flow did not adversely impact human health, property or the <br />environment. The entirety of the slurry that leaked from the #1 Cutout Line made its way <br />through the drainage to the tailings impoundment. The drainage in this area filters directly <br />into the tailings impoundment. <br />(c) The contact person for this event is: <br />Amber Moran <br />19302 County Road 3, <br />Parshall, CO 80468 <br />Phone: 720 - 942 -3480 <br />(d) No monitoring or analyses were performed for this situation since Mill water was not <br />released off -site and did not impact any natural water body. <br />(e) The investigation following the incident determined that the leak came from a broken <br />piece of HDPE pipe. The break is on the underside of the pipe. Because of the location of <br />