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<br /> <br />1313 Sherman Street, Room 215, Denver, CO 80203 P 303.866.3567 F 303.832.8106 http://mining.state.co.us <br />John W. Hickenlooper, Governor | Robert W. Randall, Executive Director | Virginia Brannon, Director <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 <br /> <br /> <br />April 3, 2017 <br /> <br /> <br /> <br />Assistant State Supervisor <br />U.S. Fish and Wildlife Service <br />Ecological Services <br />445 W. Gunnison Ave, Suite 240 <br />Grand Junction, CO 81501-5711 <br /> <br /> <br />Re: Foidel Creek Mine (Permit No. C-1982-056) <br /> Technical Revision No. 87 (TR-87) <br /> Thickener Underflow Borehole and Pipeline <br /> <br /> <br />Dear Sir or Madam: <br /> <br />The Division of Reclamation, Mining and Safety hereby issues notice, in accordance with Title 34, <br />Article 33, Section 116, Paragraph 4, of the Colorado Revised Statutes, that on March 24, 2017 an <br />application to revise coal mining operations at the Foidel Creek Mine was considered complete for <br />the purposes of filing. The revision was submitted by Twentymile Coal, LLC. All review and <br />comment periods as provided in the Act and the Regulations initiate from this date of filing. <br /> <br />The revision is to address water observed at the 9-Right and 10-Right seals. This water is <br />considered to be coming from the thickener underflow discharge in 8-Right due to a blockage in <br />the area of 8-Right . This revision proposes to shift the thickener underflow discharge to another <br />location. The proposed locations include: 1) A temporary measure to shift discharge to exisiting <br />approved 1MN Replacement Thickener Underflow Borehole. 2) As a backup plan, a previously <br />approved basin adjacent to Area 1 Pit be re-excavated. 3) As a longer-term solution, installing a <br />thickener underflow borehole and connecting pipeline from the exisiting thickener underflow <br />pipeline. The applicant is proposing additional surface disturbance outside of the area currently <br />approved for disturbance. <br /> <br />The underground coal mining operation is on land located approximately 23 miles Southwest of <br />Steamboat Springs, Colorado. The permit area is further described as follows: <br />