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DEC 09 '97 12~09PM RRCO CORL CO DEM~ER <br />Dave Berry <br />December 9, 1997 <br />Page 6 <br />48. Did Bear divert face runoff and/or flows to sealed or previously developed <br />and/or pillared workings? <br />49. Provide data on mine inflows including quantity, quality, location, <br />tempereture, and how the water was routed in the mine. Where will water <br />utilized by Bear during its operations accumulate now that the mine is <br />closed? <br />50. What was the flow rate of the inflow at the time of mine closure? <br />51. Has Bears reGamation plan taken into account past instabilities in and <br />around the Bear Mine site? ff so, what are the details of those plans? <br />52. What is believed to be cause of the different chemistry in the AA-1 <br />* monitoring well that was located in the alluvium at the west end of the mine <br />site (now covered by slide debris) as compared to well AAA (as shown in <br />Bears 1995 and 1996 AHRs)? How long has Bear been monitoring these <br />wells and how long has this difference in chemistry been observed? <br />P.7~7 <br />53. Bears AHRs provide mine maps which show a couple of faulted areas.. For <br />the fault at the west end of the 3rd west panel, in partiwlar, what information <br />is available on the effeds this fault may have on groundwater flow, colluvial <br />inflows, and on communication between the West Elk wortings and the Bear <br />mine workings? <br />54. Have you performed any conductivity analyses or otherwise estimated or <br />calculated migration time for water passing through the coal between your <br />13-Seam workings and Mountain Coal's Northwest Panels? Please provide <br />results. <br />Very truly ypoursl,~~ <br />R icrk Mueller <br />RIWl:kmn <br />cc: Phil Schmidt, WEM <br />Jon Jones, WWE <br />