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TDS in well GE-1 in 2001 continued to decrease. The higher concentrations in well GE-1 in <br />most of the 1990's could be due to upgradient QR mining, but also is within natural <br />fluctuations. <br />Figure B-3 also presents a group of five QR wells. Well GF-il is an equivalent QR <br />aquifer well in the backfill. The 2001 TDS concentrations gradually increased indicating <br />that the overall increasing trend in TDS in bacldill well GF-il is continuing. <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-S, <br />and, as expected, contains a slightly lower TDS than downgradient well GP-S. These two <br />wells have also demonstrated a similar overall slight increasing trend, with the exception of <br />steady levels for the last five years in well GP-6. The TDS in the QR aquifer in the east <br />portion of the 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 four years after four years of an overall decreasing trend. This change in TDS is <br />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 KLM wells, GP-2 and GP-8, are also shown on this <br />figure with concentrations generally between 700 and 800 mg/I. Fairly steady values have <br />been observed in these two wells for the last three years. <br /> <br />3-2 <br />