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• Wells GF-6 and GF-il are completed in the QR aquifer and QR backfill, <br />respectively. Backfill well GF-11 is located on the downgradient side of the inacdrre E pit, <br />while well GF-6 is located downgradient of the pit. GF-11 is 1150 feet upslope and <br />upgradient of GF~. An overall small decline was observed in both of these wells for 2000 <br />(see Figure A-10). The head in well GF-11 is greater than 17 feet above the head in well <br />GF-6. The water levels in the bacldill aquifer may be near the fully recovered level from <br />mining. <br />The GP-1 and GP-2 wells (Figures A-11 and A-12) are located in a previously <br />undisturbed area near the eastern boundary of the PA. Weil GP-i provides a natural <br />baseline for the QR aquifer. The water levels in well GP-1 decreased in 2000 due to less <br />recharge. A similar decrease was observed in well GP-2, which may be influenced by the <br />• nearby mining. <br />Figure A-11 also presents water levels for GP-7 and GP-8, which are located very <br />near tl~e eastern boundary of the PA. They are completed in the IaM and HI aquifers and <br />provide undisturbed baseline data for these intervals. Wells GP-7 and GP-8 show gradually <br />declines in water levels in 2000. Both of these wells show natural responses with a very <br />dampened response to changes in precipitation. <br />Wells GP-3 and GP-4 are less than 1000 feet downgradient from A pit. Both are <br />flowing wells completed in the HI and KLM aquifers, respectively. Figures A-13 and A-14 <br />show similar responses in water levels due to changes in precipitation. Water levels in well <br />GP-3 have recovered to above pre-mine levels in this area and show that any depletion of <br />water from upgradient mining has been replaced by recharge to the HI aquifer. The fairly <br /> <br />2-7 <br />