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MGD-2. It is topographically higher and closer to D pit and is completed in backfill. Water- <br /> level changes in well GD-3 have been more gradual than changes in well GD-2. The <br /> unconfined backfill aquifer's storage parameter would be much larger than the storage <br /> coefficient for the confined aquifer at GD-2 and, therefore, would be expected to dampen <br /> responses. <br /> Water levels became fairly steady after a gradual rise in well GP-9 showing that <br /> water levels in this well respond less to precipitation variations. A similar response was <br /> observed in the other 3rd White Sandstone well, GC-2, that must be responding to natural <br /> variations. <br /> The GE wells (GE-1, GE-2, GE-3) are near the northwest comer of the PA. They <br /> are completed in the QR, HI and 2nd and 3rd White Sandstone aquifers, respectively. <br /> • Water levels for these wells are presented in Figures A-5 and A-6. Wells GE-1 and GE-2 <br /> have continued to gradually recover since 1993, while levels in well GE-3 were steady after <br /> four years of gradual increase. The water-level rise in wells GE-1 and GE-2 is likely due to <br /> recovery from previous mining in the area and the higher precipitation. Figure A-6 also <br /> presents water levels for wells 81-03A and GLUX-1, which are completed in the 3rd and <br /> 1st White Sandstone aquifers, respectively. The 1999 water levels in well 81-03A have <br /> been fairly steady but slightly greater than the 1998 values. Water levels show an overall <br /> gradual decline over the last few years in well GLUX-1. <br /> Figure A-7 presents water levels for wells GF-1, GF-7 and P-8. These wells are <br /> completed in the 20 Mile, HI backfill and 3rd White Sandstone aquifers, respectively. Well <br /> GF-1 was a flowing well but water levels have declined in 1998 and 1999 to below the top <br /> • of the casing. Water levels in this deep aquifer would not be expected to quickly respond <br /> 2-5 <br />