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Water levels for well GF-4 are presented in Figure A -7. A large rise in water level in <br />well GF-4 was observed in the last half of 1999 after the repair of the casing on September 29, <br />1999. Water levels overall gradually increased in 2006 in well GF-4 with small increases in the <br />second and fourth quarters due to recharge. Mining occurred south of well GF-4 in the early 1980's <br />and is expected to limit water -level changes in the HI aquifer near well GF-4. Water levels in the <br />upgradient unconfined backfill aquifer do not fluctuate as much as the confined HI aquifer. It is <br />also possible that the backfill spring in Johnson Gulch may be limiting the head in the backfill <br />aquifer. <br />Wells GF -6 and GF -11 are completed in the QR aquifer and QR backfill, respectively. <br />Backfill 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 -11 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 2006 (see Figure A -8). The <br />head in well GF -11 is nearly 12 feet above the head in well GF-6. The water levels in the backfill <br />aquifer may be near the fully recovered level from mining. <br />Figure A -9 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 declined in 2006 while an increase was observed in well <br />GP -8 after five years of declining water levels. Both of these wells are thought to be showing <br />natural responses but could be influenced by the mining that is greater than 2200 feet away. The <br />larger decline in well GP -8 indicates mining may be causing some of this decline. <br />Well GP -2 (Figure A -10) is located in a previously undisturbed area near the eastern <br />boundary of the PA. Water levels rose in the second half of 2006 in well GP -2 but have been <br />overall fairly steady the last few years. A large decline in water levels started in 1999. <br />Trapper Mining Company 2-6 <br />2006 Annual Report <br />