REV91704 - Laserfiche WebLink

Home Browse Search

III IIIIIIIIIIIII III m r DIVISION OF MINERALS AND GEOLOC1Y Department of Natural Resources 131 J Sherman St., Room ? 15 Denver, Colorado 80203 Phone (3031 866-3567 FAX: 13031 8328106 February 23, 1999 Mr. Rick Mills Twentymile Coal Company 29~ 15 Routt Counrv Road No. 27 Oak Creek, CO 80467 Re: Energy Mine No. 3, C-84-062, Phase II and 1[I Bond Release Deaz Mr. Mills: DIVISION OF MINERALS GEOLOGY RECLAMATION MIN ING•SAFETY Rill Owrns Governor Greg E. Wal~her Eaecuuve Director rnlchael B. LOng D~v~s~on Director The Division and Colorado Yampa Coal Company are gradually resolving all outstanding concerns regarding the Energy Mine No. 3 application for Phase II and III bond release. In this letter the Division has summarized those items remaining that need to be resolved before the Division can make a proposed decision regarding Phase II and III bond release for Energy Mine No. 3. In a letter dated August 7, 1998, the Division requested that Colorado Yampa Coal Company provide a demonstration that Colorado Yampa Coal Company had successtully fulfilled the diversity standard. Colorado Yampa Coal Company responded on November 6, 1998 with information to indicate that the previously approved diversity standazd using the Shannon- Weiner diversity index was not appropriate to apply to a reclaimed mine site. Colorado Yantpa Coal Company submitted Technical Revision No. 9, which requested revision of the diversity standard to a standard applicable to the post-mining land-use and to the post-mining topography. The Division approved the revision on December 28, 1998. No comment from other agencies or affected persons was received. The decision became foal on January 16, 1999. No further response regarding the diversity standard is required. Other items that prevent the Division from finalizing our decision on the phase II and III bond release aze: A. Colorado Yampa Coal Company stated in a telephone conversation in February 1999 that Colorado Yampa Coal Company would submit data from 1993 for Well 008-77-58. Data collected in water year 1993 would represent existing ambient quality as of January 31, 1994 as indicated in Colorado Department of Public Health and Environment Basic Standards for Ground Water ~ CCR 1002-41, page 13. This information was not submitted with the Energy Mine No. 3 1998 Annual Hydrology Report that the Division received February 23, 1999. The Division located this information from Colorado Yampa Coal Company's 1993 AHR. The Division will review the data as presented in the 1993 TE OF COLORADO