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J. E. STOVER & ASSOCIATES, INC. <br />2768 COMPASS DRIVE, SUITE 101 <br />GRAND JUNCTION, COLORADO 81506 <br />PHONE: (970) 245-0101, FAX 242-7908 <br />MINE ENGINEERING <br />MINE RECLAMATION <br />March 28, 2005 <br />Andrew Newhart <br />Water Quality Control Division <br />WOCD-PE-62 <br />4300 Cherry Creek Drive South <br />Denver, Colorado 80246-1530 <br />Re; Bear Coal Company <br />CDPS Permit No. CO-0044377 <br />Gunnison County <br />Dear Mr. Newhart: <br />~~~~~~~D <br />b1aR 3 G 2005 <br />1 ~ ~ o~, },line~ats and Geology <br />-~qg~ 033 <br />CNIL ENGINEERING <br />CONST. MANAGEMENT <br />During our phone conversation of March 25~', you requested information to <br />demonstrate the water flowing from the base of the slide at the Bear No. 3 Mine <br />is a spring. The following and attached information was recently presented to the <br />Division of Minerals and Geology. <br />The following table provides a comparison of the spring and water samples from <br />piezometer AA-1. Piezometer AA-1 was located near where the spring emerged <br />from the slide in 1997. The quality of water in piezometer AA-1 was degraded by <br />the spring beginning in about 1987. The correlation between the spring and <br />piezometer AA-1 is quite good. The lab parameters for monitoring well AA-1 are <br />all in the same order or magnitude as the spring with some dilution which would <br />be expected in an alluvial well. The second table provides a comparison of the <br />spring and water discharged from the mine during 1995. There is virtually no <br />correlation between the spring and mine water. <br />Com arison S rin & AA-1 <br /> Avera e Values <br />Lab S rin AA-1 <br />Bicarbonate as CaC03 1134 811 72% <br />Total Alkalinit 1134 814 72% <br />Chloride 48 25 52°/O <br />Residue, Filterable TDS 180 C 3351 2361 70°/O <br />Sulfate 1252 1112 89% <br />Ma nesium, dissolved 118 88 74% <br />Sodium, dissolved 835 553 66% <br />