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Wells GF-6 and GF-11. are completed in the QR aquifer and QR backfill, respectively. <br />Bacld-ill well GF-11 is located on the downgradient side of the inactive E pit, while well GF-6 is <br />located downgradient of the pit. GF-1l is 1150 feet upslope and upgradient of GF-6. Overall <br />increases in water levels were observed in wells GF-6 and GF-11 for 2007 (see Figure A-6). The <br />head in well GF-11 is greater than 11 feet above the head in well GF-6. The waxer levels in the <br />backfill aquifer may be near the fully recovered level from mining. <br />Figure A-7 presents water levels for GP-7 and 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 <br />years. Water levels in well GP-7 overall were steady in 2007 aver a decline in 2006. Steady water <br />levels were also observed in well GP-8 after an increase was observed in this well in 2006 which <br />followed five years of declining water levels. Both of these wells are thought to be showing natural <br />responses but could be influenced by the mining that is greater than 1900 feet away. The larger <br />decline in well GP-8 indicates mining may be causing some of this decline. <br />Well GP-2 (Figure A 8) is located in a previously undisturbed area near the eastern <br />boundary of the PA. Wafer levels rose in the first half of 2007 and declined in the second half in <br />well GP-2 but have been overall fairly steady the last few years. A large decline in water levels <br />started in 1999. <br />Wells GP-3 and GP-4 are less than 1000 feet downgradient from A pit. Both are flowing <br />wells completed in the HI and KLM aquifers, respectively. Water levels in these two wells had <br />shown similar responses in water levels due to changes in precipitation but the 2005, 2006 and <br />2007 water level changes were different (see Figures A-9 and A-10). Water levels in well GP-3 <br />have recovered to above pre-mine levels in this area and show that any depletion of water from <br />upgradient mining has been replaced by recharge to the HI aquifer. The overall gradual declines in <br />water levels in well GP-3 in the years just prior to 2005 are probably a function of below normal <br />Trapper Mining Company 2-6 <br />2007 Affiual Report <br />