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Mountain Coal Company <br />April 28, 2017 <br />Mr. Leigh D. Simmons <br />Colorado Division of Reclamation, Mining and Safety <br />Office of Mined Land Reclamation <br />1313 Sherman Street, Room 215 <br />Denver, Colorado 80203 <br />Mountain Coal Company, LLC <br />West Elk Mine <br />5174 Highway 133 <br />Somerset, CO 81434 <br />Kathleen G. Welt <br />Environmental Engineer III <br />kwelt(caa rchcoa I. com <br />phone: 970.929 2238 <br />RECEIVED <br />MAY 03 2017 <br />DIVISION OF RECLAMATION <br />Re: Mountain Coal Company, LLC, West Elk Mine; Permit No. C-1980-00INGAND SAFETy <br />Quarterly Summary of Subsidence Observations; 1St Quarter 2017 <br />Dear Mr. Simmons: <br />Mountain Coal Company, LLC (MCC) began longwall mining the E -Seam in December 2008. <br />MCC has completed longwall mining of longwall panels E1 through E5 and continued mining of <br />longwall panel E6 during the 1St Quarter of 2017. At the end of the 1St Quarter, MCC had mined <br />out longwall panel E6 up to cross -cut 16. <br />There were no stock ponds within twice the angle -of -draw of the mined area during this quarter, <br />and mining was not within a mile of Monument Dam. Winter weather and ground conditions did <br />not permit inspections this quarter. All inspections will continue when weather and ground <br />conditions allow. Routine inspection reports for Monument Dam, Forest Service Roads and <br />Stock Ponds are included with this letter report. <br />Please don't hesitate to contact me at (970) 929-2238 or by e-mail should you have questions <br />regarding this submittal. <br />Sincerely, ` <br />Kathleen G. Welt <br />Environmental Engineer III <br />Enclosures: Monument Dam Inspections — First Quarter 2017 <br />US Forest Service Road Inspections — First Quarter 2017 <br />Stock Pond Inspections — First Quarter 2017 <br />cc: D. Gray - USFS <br />W. Norris — MCC <br />M. Peacock — MCC <br />Availability of Records File <br />