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iii iiiiiiiiniiiiii 999 STATE OF COLORADO DIVISION OF MINERALS AND GEOLOGY Deparlmern nl Natural Resources 171 .1 Sherman SL, Ruom ? 15 `yk Denver, Colorado HIL01 I ~ ' l Phone: (5011 H66 7567 II l FA.><' L{Il fl Hfl ~H1U6 DEPARTMENT OF NATURAL RESOURCES May 6, 1996 kuv kome~ Gavcrno~ Mr. Gre Larson lames5 Lochhead g Executive Director P.O. Box 534 M,rn,els Lnng Somerset, Colorado 81434 Dim Sion D^eaor RE: Sanborn Creek Mine; Our File No. C-81-022; Notification of Underground Mining Dear Mr. Larson: Per our conversation on May 1, 1996, I am enclosing portions of the "Regulations of the Colorado Mined Land Reclamation Board for Coal Mining" as they pertain to landowner notification and subsidence control. Mining companies are required to notify property owners and residents of land, within the area above the underground workings and adjacent areas, six months prior to mining beneath that property (Rule 4.20.2). The letter that you received from Oxbow Carbon and Minerals is in fulfillment of that requirement as an adjacent property owner. Although we have not yet received an application to mine the area in question, it is my current understanding that the mining will be no closer than about one-half mile to the west of your property. Given this proximity, it is unlikely that any adverse surface impacts would occur on your property, hence the comment that "no special or unusual measures will be taken to prevent or control adverse impacts". However, once the Division receives a revision to the existing Sanborn Creek Mine permit that clearly illustrates the proposed expansion, a through review of the expected surface impacts as a result of undermining will be conducted by our office. If we determine that potential impacts could occur, the operator may be required to implement preventative measures to control subsidence. For your information, whenever an application to significantly modify any existing permit is submitted to the Division, there is ample opportunity for the public to review and comment on the application and the Division's decision concerning that application. Notice of permitting actions for mines located in your area are published in the Delta County Independent and include review and comment periods, locations where the applications can be reviewed, and addresses where comments should be sent.