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Mr. David Berry <br />Senior Environmental Protection Specialist <br />December 19, 1997 <br />Page 1 I <br />Beaz -See Bear Mine Permit Exhibit 21 (File #.i). <br />52. What is believed to be cause of the different chemistry in the AA-1 monitoring well that <br />was located in the alluvium at the west end of the mine site (now covered by slide debris) <br />as compazed to well AA-3 (as shown In Bear's 1995 and 1996 AHRs),? How long has <br />Beaz been monitoring these wells and how long has this difference in chemistry been <br />observed? <br />Bear - AA-1 and AA-3 have been monitored since 1981. The difference in chemistry <br />began in the 1986 - 1987 time frame. Bear's permit explains the cause of the different <br />chemistry. See permit pages 2.05-SSa, SSb and SSc (File #14). <br />53. Bear's AHRs provide mine maps which show a couple of faulted areas. For the fault at <br />the west end of the 3rd west panel, in particulaz, what information is available on the <br />effects this fault may have on groundwater flow, colluvial inflows, and on <br />communication between the West Elk workings and the Beaz mine workings? <br />Beaz -The fault at the end of the 3rd west panel is an indication of lack of coal. No <br />groundwater flow or colluvial inflow was present at this transition azea. The fault line at <br />the end of first and third north is an indication that the chazacter of the coal changed. <br />There was no groundwater flow at the end of these panels. <br />54. Have you performed any conductivity analysis or otherwise estimated or calculated <br />migration time for water passing through the coal between your B-Seam workings and <br />Mountain Coal's Northwest Panels? Please provide results. <br />Bear - No. Beaz personnel visually observed the flow in mid 1994. Migration time <br />analysis aze not necessary when the flow can be observed. <br />The above information is what we have compiled since your December 9, 1997 request and we <br />believe it is substantially complete. If additional information on these issues comes to our <br />attention, we will advise you promptly. <br />BEAR COAL COMPANY, INC. <br />Daniel E. Beaz, President <br />31138036.1 <br />