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III IIIIIIIIIIIII III <br />STATE OF COLORADO <br />DIVISION OF MINERALS AND GEOLOGY <br />Department of Natural Resources <br />131 3 Shaman 51.. Room ' 15 <br />Denver, CO EO?03 <br />Phone 1301) 8G5-3561 <br />FAx: 11031 8J2-Ul u6 <br />April 8, 1993 <br />Mr. Marcus Middleton <br />Twentymile Coal Company <br />29587 Routt County Rd. No. 27. <br />Oak Creek, CO 80467 <br />Re: Second Half 1992 Subsidence Report, <br />Foidel Creek Mine, No. C-82-056. <br />Dear Mr. Middleton: <br />OF'~o/p <br />ti~ R <br />Nom. ,~ <br />• ~ y <br />. fe® . <br />~ /8]6 <br />Roy Romer <br />Governor <br />Michael B. long <br />Din smn DireUOr <br />The Division has completed review of the above mentioned report for the <br />Foidei Creek Mine. Overall, the report is weil organized and follows the <br />report plan as outlined in Exhibit 34 of your approved permit. The Division <br />conc;;rs that data for the A and survey lines indi °te subsidence has <br />ceased. It also appears from the elevation vs. profile plots that the <br />magnitude of the subsidence is very uniform and controlled. <br />Our only comment is with regard to panel identification. Please label the <br />S::bsldcr,cc Monitoring Status Map ::s i.^.~ panel iden}ifira}inn niimberc 1_g rather <br />than the 1 left, 6 left, etc. identification This will help alleviated any <br />future confusion with regard to subsidence data. <br />Thank you for your continued efforts to adhere to your monitoring commitments. <br />Sincerely, // <br />~~~~~`~~ <br />,~ w <br />Kent A. Gorham <br />Reclamation Specialist <br />KAG/amm <br />7039E <br />