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III IIIIIIIIIIIII III 999 h r DIVISION OF MINERALS AND GEOLOGY Department o(Natural Resources STATE OF COLORADO Ill 7 Sherman SI ,Room 21 5 Denver, CO 80203 Phone: 130]1 866-3567 FA% (}U3) 832-8106 January 28, 1994 Mr. Darrell E. Nance P.O. Box 440 Pilot Hill, CA 95664 Re: Reclamation of the Trinidad Basin Mine Las Animas County, Colorado Revoked Permit No. C-81-048 Dear Mr. Nance: pF COQ ~. Roy ROmer Governor Michael B. Long Division OrteUOr The Colorado Division of Minerals and Geology is preparing the bid document for fmal reclamation at the revoked Trinidad Basin Mine (TBM) site. The purpose of this letter is to describe the reclamation activities that the Division proposes to conduct on your land. If the Division does not receive a response to this letter by February 13, 1994, the Division will assume your consent and proceed with the plans described herein. Enclosed are three maps titled Map I, Map II, and Map III. Map I shows the area within the permit area that is owned by Darrell and Pollye Nance and by Mrs. Nancy Chappie. Map I also shows the areas covered by Map II and Map III. Maps II and III highlight the locations of reclamation activities proposed by the Division that may affect property owned by you. The circled red numbers on Maps II and III correspond to the numbered items of this letter. The reclamation items listed in this letter have been characterized as possessing high, medium, or low priority based upon the Division's determination of potential environmental degradation and threat to public safety. The Division has prioritized the reclamation items in the event that sufficient bond is not available to complete reclamation of all items listed for the entire mine area. Proposed Reclamation Plan (Numbered items correspond to Map 77) The approved mine operations plan in the now-evoked mining permit had allowed streamflow from the canyon located on the south side of Del Agua Cheek to be diverted to pond 15-P2, as shown on Map II. Following revocation of the permit in April 1993, TBM ceased maintenance of the drainage control structures that conveyed this streamflow to pond 15-P2. The drainage control structures have failed at the bridge crossing of Del Agua Creek, and the uncontrolled flows threaten to wash out the bridge. The Division proposes to realign the natural drainage channel, so that the natural streamflow will enter Del Agua Creek downstream of the bridge, thereby no longer impacting it.