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<br />STATE OF COLORADO <br />DIVISION OF MINERALS AND GEOLOGY <br />Department o(NaNral Resources <br />131 7 Sherman 51., Room 215 <br />Denver, CO 80207 <br />Phone. 0031 866-1567 <br />FA%: (3071 832-8106 <br />September 30, 1993 <br />Mr. Marcus Middleton <br />Twentymile Coal Company <br />29587 Routt County Road No. 27 <br />Oak Creek, CO 80467 <br />RE: Subsidence Data Review, File No. C-82-056, Foidel Creek Mine <br />Dear Mr. Middleton: <br />pF' COQ <br />~'~ 4 <br />N~~ <br />'rer~• <br />Roy Romer <br />Governor <br />mac hael 8. Long; <br />Drvivon Director <br />As we discussed on Friday, September 24, 1993, I have completed my review of the <br />subsidence data submitted as required by your approved permit, No. C-82-056. <br />That review revealed the following: <br />1. Baseline data for lines A-A' and B-B' was not collected one month prior to <br />the commencement of longwall mining as required by your permit, and Rule <br />2.05.6(6)(c>(D). <br />2. One week of data collection was not done between 12/22/92 and 1/7/93 <br />(15 days). <br />3. Line A-A' was not completely surveyed each week as required by your permit. <br />4. Additionally, the semi-annual submittal was perceived by the Division to be <br />tardy, having been received by the Division in its final form almost 3 <br />months after the reporting period. <br />Therefore, we have issued Violation No. C-93-137 to Twentymile Coal Company for <br />the Foidel Creek Mine. Please find the appropriate documents enclosed. <br />You have 15 days from the time of service to submit written information about the <br />violation to the Division. <br />Should you have any questions or concerns, please call me. <br />Sincerely, <br />Kent A. Gorham <br />Reclamation Specialist <br />KAG/scm <br />CERTIFIED MAIL N0. P 179 166 131 <br />Return Receipt Requested <br />8926E <br />