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Richard D. Lamm <br />Governor <br />J <br />DEPARTMENT OF NATURAL RESOURCES <br />Dantl H. Getches. Enecutrve Director <br />MINED LAND RECLAMATION <br />DAVIDC. SHELTON, Diroctor <br />September 26, 1984 <br />Mr. David McMindes <br />Colorado Yampa Coal Company <br />P.O. Box 774288 <br />Steamboat Springs, CO 80477 <br />Re: Mass Movement on Area 1; Permit 79-171 <br />Dear Mr. McMindes: <br />DIVISIO N <br />The Division has reviewed your letter dated August 9, 1984, regarding <br />evaluation of possible causes Gf the areas of mass movement on Area 1, and <br />measures your company's plans to take to stabilize these areas. <br />While these springs are noted as being outside of the mining area, they are <br />believed to have occurred as a result of spoils saturation within the mine <br />area, and, therefore, are directly related to mining. , <br />Regrading of the areas is not warranted at this time; however, other <br />corrective measures :nay be necessary. Your letter stated that, if the slump <br />areas exhibited saturation on a year-round basis, a rock drain would be <br />installed. Based upon the Division's field observations, the areas appear to <br />have been saturated on a year-round basis in 1984. The Division feels that <br />these areas will continue to exhibit seepage, and long term corrective <br />measures are necessary to ensure proper drainage and stability. CYCC must <br />submit a plan for approval, to be implemented in 1985, providing for <br />dewateriny of these areas. The rock drain proposed in your letter is an <br />acceptable method; however, more detail is necessary. <br />If you have any questions, please don't hesitate to call me. <br />Sincerely, <br /> <br />Anne C. 8aldridge <br />Geologist/Hydrologist <br />ACB/mad <br />cc: Sandy Emrich <br />Doc. No. 4349 <br />423 Centennial Building, 1313 Sherman Street Denver, Colorado 80203 Tel. (303) 866-3567 <br />• III IIIIIIIIIIIIIIII <br />