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STATE OF COLORADO <br />DIVISION OF MINERALS AND GEOLOGY <br />Department of Natural Resources <br />1313 Sherman St., Room 215 C O L D RA D O <br />Denver, Colorado 80203 D I V r 5 1 o N O F <br />Phone: (303) 866-3567 M I N E RA L S <br /> <br />FAX: (303) 832-8706 G E O L O G Y <br /> RECLANATION•NINING <br /> EAFETY•ECIENCE <br />November 1, 2005 GOVe~OelE <br /> Russell George <br />Jerry M. Nettleton Executive DireLTOr <br />Environmental Coordinator RGnald w_ catrany <br />Twent mile Coal Com an Division Director <br />y p y Natural Resource Trustee <br />29515 Routt County Road #27 <br />Oak Creek, CO 80467 <br />Re: Foidel Creek Mine, Permit C-1982-056, First Half 2005 Subsidence Report <br />Dear Mr. Nettleton: <br />The Division of Minerals and Geology (Division) has completed its review of your <br />revised subject report (letter of August 8, 2005). A copy of the review is attached. <br />Overall, actual subsidence relates closely to that predicted. The maximum subsidence <br />appears to be nearly 9% more than predicted, and the profile of subsidence is offset to the <br />south (towards previously-mined areas) about 200 feet. Please consider this trend for <br />predictions of the impacts of subsidence under structures to the north. <br />Please call me if you have any questions. <br />Yours truly, <br />w~.~~ <br />By~G. Walker <br />Environmental Protection Specialist <br />1 Enclosure, as stated <br />cc: Daniel I. Hernandez, Division <br />0f8ce of Office of Colorado <br />Mined Land Reclamation Active and Inactive Mines Geo4ogical Survey <br />