Laserfiche WebLink
iii iiiniiiiimiu <br />DIVISION OF MINERALS AND GEOLOGY <br />Department of Natural Resources <br />1313 Sherman 51., Room 215 <br />Denver, Colorado 80203 <br />Phone: (3031 866-3567 <br />FAX: !303)832-8106 <br />December 9, 1999 <br />Ms. Susan Nall <br /> <br />STATE OF COLORADO <br />DIVISION OF <br />MINERALS <br />GEOLOGY <br />RECLAMATION <br />MINING•SAFETY <br />U.S. Army Corps of Engineers Bill Owens <br />Regulatory Unit A Governor <br /> <br />402 Rood Avenue <br />Room 142 Greg E. Walther <br />, Executive Dvecror <br />Grand Junction, CO 81501-2563 Michael B. Long <br /> Division Director <br />RE: Twenty Mile Coal Company, Foidel Creek Mine (C-82-056), Permit Revision No. 5 <br />Deaz Ms. Nall: <br />Thank you for calling on December 7, 1999, to inquire about Twentymile Coal <br />Company's Permit Revision application for the Northern Mining District. The permittee, <br />Twenty-mile Coal Company, indicated that they would be mailing a copy of the complete <br />application to your office today. The Division is providing you copies of the last two <br />subsidence reports submitted by the operator for the Eastern Mining District at the Foidel <br />Creek Mine. As you requested, I am only sending you the report summaries and maps. <br />The raw subsidence measurement data aze available at your request. <br />During our telephone conversation you asked for some general background on this permit <br />revision proposal. You inquired as to the depth of the coal to be mined: The operator <br />reports, "The overburden thickness varies from ],100 to 1,400 feet in the corridor where <br />the creek [Fish Creek] passes over the mine workings." Revised page 2.05-181.6 <br />(8/27/99). The operator predicts subsidence in the Northem Mining District to range <br />from 0 to 63 inches. Zero inches subsidence is predicted over the gateroads (Exhibit 7e- <br />3n: and Exhibit 7E-1.) Twentymile Coal Company `s estimated 2779.2 affected acres <br />correlates to the acreage proposed to be undermined by the Northem Mining District. <br />Twentymile Coal Company predicts 210 acres of the Fish Creek alluvial Valley Floor to <br />be affected by mining (Exhibit 4E-3). <br />I hope this information will help you in your determination of the mining impacts to Fish <br />Creek. If you do not receive the PR-OS application package from Twentymile Coal <br />Company within the next several days, please call me and I will follow up with the <br />operator on getting the information to your office. Please call me should you have any <br />additional questions. My direct phone number is (303) 866-4944. <br />3115[ <br />Attachments <br />