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III IIIIIIIIIIIII III <br />999 <br />DEPARTMENT OF NATURAL RESOURCES <br />David H. Getcnea. Executive Director <br />MINED LAND RECLAMATION DIVISION <br />DAVID C. SHEITON, Director <br />Richard D. Lamm <br />Governor <br />September 3, 1986 <br />Dennis Conn <br />West Elk Coal Company, Inc. <br />P. O. Box 591 <br />Somerset, Colorado 81434 <br />Re: Landslides, Upper Diversion Ditch, Mt. Gunnison No. T Mine, <br />File No. C-80-001 <br />Dear Mr. Conn: <br />The Division is aware of the problem with landslides along the upper diversion <br />ditch. This area was inspected during my August 19, 1986 inspection and <br />comments were noted in my inspection report. The Division concurs with WECC's <br />comments per your letter of August 18. Since the undisturbed area south of <br />the diversion ditch has experienced very little runoff during the past 5-year <br />permit term and a greater disturbance would be created by re-working the slide <br />areas, it is the Division's opinion that the slide areas should be left "as <br />is" until runoff channeled through the diversion ditch is of sufficient flow <br />to warrant remedial work on the slide areas. <br />It is WECC's responsibility to monitor the diversion ditch during the peak <br />runoff season (April-June) to determine if corrective measures are necessary. <br />I recommend that the upper diversion and slide area be monitored at a <br />frequency of once per week (when possible) during the peak runoff season of <br />1987 and WECC consult with the Division to determine if remedial actions are <br />necessary. <br />This letter should remain on file at the Mt. Gunnison No. 1 Mine office and <br />will serve as an approval by the Mined Land Reclamation Division to refrain <br />from repairing the upper diversion ditch until such work is warranted and <br />requested by the Division. <br />Sincerely, <br />Thomas A. Schreiner <br />Reclamation Specialist <br />TAS/vj r <br />3294E <br />423 Centennial Building, 1313 Sherman Street Denver, Colorado 80203 Tel. (303) 866-3567 <br />