Laserfiche WebLink
Figure B-2 also presents a group of fow QR wells. Well GF-11 is an equivalent QR aquifer <br />well in the backfill. The 2005 TDS concentrations overall decreased in backfill well GF-11 and is <br />still below its peak in 2001 and 2002. Concentrations in the QR aquifer are monitored downgradient <br />at well GF-6 and have shown no influence from the upgradient mining, except for a very slight <br />overall increasing trend. The 2005 values decreased slightly. These small changes aze well within <br />natwal variations. Figwe B-2 also presents the TDS concentrations for QR wells GP-5 and GP-6, <br />Well GP-6 is upgradient of well GP-5, and, as expected, contains a slightly lower TDS than <br />downgradient well GP-5. TDS concentrations in these two wells were steady in 2005 but have also <br />demonstrated a similar overall slight increasing trend over portions of their historical records which <br />aze likely natwaL. <br />Figwe B-3 presents the TDS concentrations for three I~LM aquifer wells. The data for <br />well GP-4 is presented in red square on Figure B3 with some variations but overall similaz values <br />for the last several years. TDS concentrations for two of the eastern KLM wells, GP-2 and GP-8, are <br />also shown on this figwe with concentrations generally between 700 and 800 mgA. Variable TDS <br />concentrations that are overall steady have been observed in these two wells for the last few yeazs. <br />Figures B-4 and B-5 present the TDS concentrations versus time for the HI aquifer wells. <br />Steady concentrations have been observed in the TDS in well GE-2 during the last two years while a <br />gradual decline had been observed in the previous few years. The TDS in HI aquifer well GF-4 has <br />gradually increased in concentrations with time. The small changes aze well within natwai <br />fluctuations in these two wells but could be due to upgradient mining. TDS concentration in backfill <br />well GF-5 is slightly greater but is still well within the natural range for the HI aquifer. Significantly <br />higher TDS values have been observed in backfill well GF-7 with the concentrations in the last eight <br />Trapper Mining Company 3-2 <br />2005 Annual Report <br />