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<br /> <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 <br /> <br /> <br /> <br /> <br />September 10, 2014 <br /> <br />Chris Gilbreath <br />Tri-State Generation and Transmission Association, Inc. <br />P.O. Box 33695 <br />Denver, CO 80233-0695 <br /> <br />Re: New Horizon Mine (Permit No. C-1981-008), TR-64, adequacy letter <br /> <br />Dear Mr. Gilbreath: <br /> <br />We received your technical revision application (TR-64) regarding revisions to the trench drain design on <br />August 19, 2014, and your application was deemed complete on August 27, 2014. The following two issues <br />have been identified with the submittal: <br /> <br /> DRMS requires proof that this plan has been approved by the Water Quality Control Division <br />(WQCD). We would prefer that this be a revised CDPS permit. However, if you can provide proof <br />that this revision from the WQCD is imminent (for example in a letter from a senior staff member), <br />that would also suffice. <br /> <br /> Please address the issue of constructing the pipeline in the buffer zone along Tuttle Draw. <br /> <br />Please provide an updated submittal that addresses each issue. <br /> <br />I have another comment. The construction of the pipeline must not jeopardize the integrity of the <br />embankment for Pond 013. <br /> <br />If you have any questions, please contact me at 303.866.3567 (extension 8113) or Rob.Zuber@state.co.us. <br /> <br />Sincerely, <br /> <br /> <br /> <br />Robert Zuber, P.E. <br />Environmental Protection Specialist <br /> <br />1313 Sherman Street, Room 215, Denver, CO 80203P 303.866.3567 F 303.832.8106 http://mining.state.co.us <br /> <br />John W. Hickenlooper, Governor | Mike King, Executive Director | Virginia Brannon, Director <br />