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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 />July 29, 2016 <br /> <br /> <br />Peter Milonas <br />State Board of Land Commissioners <br />Department of Natural Resources <br />1127 Sherman Street, Suite 300 <br />Denver, CO 80203-2206 <br /> <br /> <br />Re: Foidel Creek Mine (Permit No. C-1982-056) <br /> Technical Revision No. 84 (TR-84) <br /> 6MN Passive Water Treatment System. <br /> <br /> <br />Dear Mr. Milonas: <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 July 28, 2016 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 />Twentymile Coal, LLC. (TC) has submitted this technical revision application to obtain approval <br />for the construction, operation, maintenance and reclamation of a passive water treatment system <br />to treat excess mine water discharge. Generally, the excess mine water discharge will be water <br />resulting from progressive dewatering of mine water accumulations in the sealed and abandoned <br />Wadge Seam mine workings in the Eastern and Northern Mining District of the Foidel Creek <br />Mine. The proposed passive treatment approach will consist of a series of four constructed <br />treatment cells, which will include both open water pond areas and shallow constructed wetlands to <br />provide physical, chemical and biological treatment in both aerobic and anaerobic zones. The <br />passive treatment system is proposed to be installed in a small ephemeral drainage above the <br />existing 6MN Water Storage Reservoir in the SW ¼ of Section 17 Township 5 North Range 86 <br />West of the 6th Principal Meridian. This project will also require the construction of a 2,600 foot <br />light use road. The water treatment system will discharge to the 6MN reservoir. TC also proposes <br />to modify the 6MN reservoir to install a gated discharge culvert and a rock lined channel. <br />Discharged water will flow to an existing ephemeral tributary to Fish Creek. The planned passive <br />treatment system, road and associated discharge structures will result in approximately 19.0 acres