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COLORADO <br />Division of Reclamation, <br />Mining and Safety <br />Department of Natural Resources <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 <br />June 30, 2015 <br />Scott Cowman <br />Peabody Sage Creek Mine <br />P.O. Box 250 <br />36600 Routt County Road 27 <br />Hayden, Colorado 81639 <br />RE: Peabody Sage Creek Mine; C-2009-087 <br />2°d and 3'd Quarter 2012 Subsidence Report <br />Dear Mr. Cowman, <br />The Colorado Division of Reclamation, Mining and Safety (Division) has reviewed the above referenced <br />report. In accordance with permit section 2.05.6(6), the Peabody Sage Creek Mining, LLC (PSCM) <br />committed to conducting a subsidence monitoring program that includes the inspection of the <br />underground workings. According to your e-mail, mining only occurred in the 2nd and 3rd quarter of 2012 <br />and the mine is currently sitting idle. Also, the portals are sealed at this time. The 2nd and 3rd quarter <br />reports did not indicate any "Hazardous Conditions" (roof falls, pillar degradation, faults, or excessive <br />inflow) were observed. Given this, items 1 through 5 of PSCM subsidence monitoring requirements <br />appear to have been addressed. Other items listed in the monitoring requirements do not appear to be <br />necessary given the extent of mining with one exception discussed below. <br />Item No. 8 of the subsidence monitoring program indicates that the location and elevation of a concrete <br />footer of the high voltage distribution tower nearest each set of entries passing beneath the high voltage <br />lines will be surveyed at least one month prior to mining. The tower footer(s) will be surveyed each May <br />and October after mining beneath the tower. Is there any high voltage lines above the entries mined <br />during the 2nd and 3rd Quarter of 2012 with concrete footers? Is so, please submit the required monitoring <br />data. <br />Please note that according to the permit, subsidence monitoring reports are to be submitted semi-annually <br />if/when mining begins. <br />If you have any questions feel free to contact me at (303) 866-3567, extension 8120. <br />Sincerely, <br />1 L/U <br />Jared Ebert <br />Environmental Protection Specialist <br />OF COLO <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. Hickentooper, Governor I Mike King, Executive Director I Virginia Brannon, Director * *1876 <br />