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recharge. Mining occurred south of well GF-4 in the early 1980's and is expected to limit water-level <br />changes in the HI aquifer near well GF-4. Water levels in the upgradient unconfined lxicldill aquifer do <br />not fluctuate as much as the confused HI aquifer. It is also possible that the baclc&ll spring in Johnson <br />Gulch may be limiting t1a; head in the baclcSll aquifer. <br />Wells GF-6 and GF-11 are completedm the QR aquifer and QR bacldll, respectively. <br />Backffi well GF-11 is located on the downgradient side oftbe inactive E pit, while well GF-6 is located <br />dowr~gradient of the pit. GF-11 is 1150 feet upslope a~ upgradient of GF~. Ove-all steady water <br />levels were observed in wells GF-6 and GF-11 for 2004 (see Figure A-8). The head in well GF-I 1 is <br />nearly 14 feet above the head in weft GF-6. The water levels in the bacldill aquifer may be near the <br />fully recovered level from Honing. <br />Figure A-9 presents water levels for GP-7 atad GP-8, which are located very near the <br />eastern boundary of the PA. They are completed in the KLM and HI aquifers and may provide <br />undisturbed baseline data for these intervals but could be influenced by mining for the last few years. <br />Water levels in well GP-7 gradually dec}itred in 2004 while a larger declare was observed in well GP-8 <br />for the last four years. Both of these wells are thought to be showing natural responses but could be <br />influerxaed by the Honing that is Beater than 2200 feet away. The larger decline in well GP-8 indicates <br />muvng may be causing some of this decline. <br />Welt GP-2 (Figure A-10) is located in a previously undisturbed area near the eastern <br />boundary of the PA. Water levels were overall declining in welt GP-2 in 2004. The overall decline the <br />&~st two years followed a rise in 2002 which were preceded by a larger decline. <br />Wells GP-3 and GP~t are less than 1000 feet downgradient from A pit. Both are flowing <br />welts completed in the HI and KLM aquifers, respectively. Figures A-11 and A-12 show sim>7ar <br />responses in water levels due to changes in precipitation Water Levels in well GP-3 have recovered to <br />above pre-mine levels in this azea and show that any depletion of water from upgraciient rrmriug has <br />Trapper Mining Company 2-6 • <br />2004 Annual Report <br />