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i <br /> • head in well GF-6. The water levels in the backfill aquifer may be near the fully recovered <br /> level from 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. They provide a natural baseline for <br /> the QR and KLM aquifers. The water levels in wells GP-1 and GP-2 decreased in 1999 due <br /> to less recharge. <br /> Figure A-11 also presents water levels for GP-7 and GP-8, which are located very <br /> near the eastern boundary of the PA. They are completed in the KLM and HI aquifers and <br /> provide undisturbed baseline data for these intervals. Wells GP-7 and GP-8 show fairly <br /> steady water levels in 1999. 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 water from upgradient mining has been replaced by recharge to the HI aquifer.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 water <br /> level in well GP-4 has also recovered to pre-mine levels. <br /> Well GMP-1 (Figure A-13) was completed in the HI aquifer to monitor ground- <br /> water conditions downgradient of the ash disposal site immediately south of A pit. Water <br /> levels have continued to recover from the A pit mining in this area and will likely still <br /> recover more. <br /> Wells GP-5 and GP-6 are both completed in the QR aquifer. GP-5 is immediately <br /> downgradient of A pit and GP-6 is immediately upgradient of the pit. Water-level data is <br /> 2-7 <br />