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downgradient in the R Coal at GD-2. The TDS in well GD-2 was steady in 2000. The TDS • <br />in well GE-1 in 2000 maintained the decreased values that occurred in 1999. The higher <br />concentrations in well GE-1 in most of the 1990's could be due to upgradient QR mining, <br />but also is within natural fluctuations. <br />Figure B-3 also presents a group of five QR wells. Well GF-il is an equivalent <br />backfill monitor well. The 2000 lUS wncentrations were steady after an overall increasing <br />trend in TDS had occurred in backfill well GF-11 over the previous twelve years. <br />Concentrations in the QR aquifer are monitored downgradient at well GF-6 and have <br />shown no influence from the upgradient mining, except for a very slight overall increasing <br />trend. These small changes are well within natural variations. Figure B-3 also presents the <br />TDS concentrations for QR wells GP-5 and GP-ti. Well GP-6 is upgradient of well GP-5, <br />and, as expelled, contains a slightly lower TDS than downgradient well GP-5. These two • <br />wells have also demonstrated a similar overall slight increasing trend, with the exception of <br />the last four years in well GP-6. The TDS in the QR aquifer in the east portion of the <br />Trapper Mine at well GP-1 has been fairly steady for the last several years. <br />Figure B-4 presents the TDS concentrations for four KLM aquifer wells. Well GF- <br />3 is shown with blue dots and TDS values indicate a very gradual increasing trend in TDS <br />in the last three years after four years of an overall decreasing trend. This change in TDS <br />is well within the natural fluctuation in TDS in the KLM aquifer. The data for well GP-4 is <br />presented in green on Figure B-4 and shows similar TDS concentration variations. TDS <br />concentrations for two of the eastern K1~7 wells, GP-2 and GP-8, are also shown on this <br />figure with concentrations generally between 700 and 800 mg/I. A gradual rising trend • <br />was observed in these two wells after gradually declining for four years. <br />3-2 <br />