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III IIIIIIIIIIIIIIII <br />999 <br />STATE OF COLORADO <br />DIVISION OF MINERALS AND GEOLOGY <br />Departmem of Natural Resources <br />1313 Sherman 51 , Room 215 <br />Denver, Colorario 80203 <br />Thane: (3031 866-3567 <br />FAX: 1303) 832-8106 <br />December 30, 1994 <br />Me. Kathleen Welt <br />Mountain Coal Company <br />P.O. Box 591 <br />Somerset, CO 81434 <br />RSe Technical Revision No. 74; West Slk Mine; Pessit No. C-80-007 <br />Dear Me. Welt; <br />I~~~ <br />DEPARTMENT OF <br />NATURAL <br />RESOURCES <br />Roy Romer <br />Governor <br />lames 5 Lochhead <br />Exrcmive Director <br />Michael B. Long <br />Division Director <br />The Division has reviewed Mountain Coal Company's (MCC) application for a <br />technical revision to add the structure recently constructed by the landowner to <br />the permit structure inventory and subsidence information to comply with Rule <br />2.05.6(6). In addition, MCC has agreed to repair, replace or compensate for the <br />building in accordance with Rule 4.20.3. The Division has the following <br />questions and recommendations regarding the application: <br />1. On page two of the cover letter for the application, it states that <br />eurveye will continue approximately weekly until the first of the year, <br />when the longwall ie well past the building Bite and subsidence is <br />expected to be more than 90 percent complete. MCC should continue the <br />eurveye until subsidence ie 100 percent complete. HCC will need to submit <br />a revision to cease monitoring of the structure. <br />2. The structure inventory map should be certified by a registered <br />professional engineer ae required in Rule 2.05.6(6)(a)(ii)(B). Please <br />provide a certified map. <br />3. The revised pages to be inserted into the permit does not follow pages <br />currently in the permit. Please provide pages that can be inserted into <br />the permit. <br />4. HCC should provide the Division with a detailed description of the <br />measures to be taken to mitigate the effects of the worst possible <br />consequences ae predicted, pursuant to Rule 2.05.6(6)(f)(iv). An <br />agreement with the landowner may be prudent because it appears from the <br />correspondence between MCC and Mr. Hautz that an agreement on how the <br />structure would be repaired or the coat of compensation for the structure <br />has not been reached. <br />Please call if you have any questions. <br />err <br />Christine E. John o <br />Environmental Pr ec ion Specialist <br />CEJ/007TR74 <br />