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DEC 95 'S' 12~07PM RP.CO CORL CO DEN'JEk <br />ARCO,Ci '-~°' <br />555 S!vrnt^enrh Sree~ <br />~ Dsrn~cr. Colorado 502L•2 <br />Telspnere 30; ;n3 a2a5 <br />Faa 30; 2?3 aG?'e <br />R. Kirk MuQller <br />$M~Cr A;(OrnG^r <br />December 8, 1997 <br />VIA FAX 832-8106 <br />Dave Berry <br />Division of Minerals & Geology <br />1313 Sherman St., Room 215 <br />Denver, CO 60203 <br />~ RE: Land Slide and Water Outflows at Bear Mine Site <br />Dear Dave: <br />As Mountain Coal Company and Wright Water Engineers proceed with their <br />investigation into the facts and circumstances surrounding Notice of Violation C- <br />80-007 and the landslide and water outflow that an? the subject of the NOV, a <br />number of questions have arisen that can best or only be answered by the <br />operators of the Bear Mine. I would very much appreciate your assistance in <br />soliciting responses from the Bear Mine to the following questions. <br />Please provide a detailed history of water outflows from the Edwards Mine. <br />How long and at what times have you observed discharges? How large <br />have these discharges been? Do they show variability? Have you sampled <br />and analyzed water quality or made visual observations about water quality? <br />How have you managed this discharge? Have you treated the water prior to <br />release and conducted monitoring? <br />2. Based on our site inspection on December 2, the Edwards Mine outflow was <br />conveyed directly into the North Fork Gunnison River. It was our <br />~ understanding, however, that this water was to be first directed into the Bear <br />Mine sedimentation pond, rather than being directly discharged to the North <br />Fork. Please clarify this situation for us. <br />3. Have you conducted an evaluation of the water quality impacts to the North <br />Fork posed by this discharge? What did you do and what does the <br />investigation show? Have you conducted biological or chemical monitoring <br />to evaluate impacts? <br />P.2-" <br /> <br />