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"• seasonally, which indicates the changes in water levels are <br />sensitive to natural influences. <br />The static water-level elevations for flowing well GD2 are <br />_i <br />presented in Figure A-9. Water levels had been rising at well GD2 <br />(QR aquifer) for most of 1986. The water levels from November 1986 <br />through September 1989 show a decline to levels below those of <br />early 1986. The GD2 water levels in the last two years have <br />fluctuated but generally been fairly steady. The decline in water <br />levels since 1986 is thought to mainly reflect the lower rates of <br />recharge due to the reduced precipitation amounts since 1986. Some <br />of the past rise could have been caused by increased ground water <br />flowing downgradient due to the mining and, therefore, some of the <br />recent decline in water level could be the result of levels <br />returning to pre-mine conditions. The fluctuations in water levels <br />for well GD2 are thought to be mainly from natural changes in the <br />QR system. <br />Well GD3 was installed in the D pit backfill material <br />upgradient of well GD2 during July 1988. Figure A-10 plots the <br />water-level data collected for well GD3. The overall decline in <br />water levels in the backfill material near well GD3 indicate this <br />aquifer is sensitive to the average decline in precipitation. <br />Figures A-11, A-12 and A-13 present the water-level changes in <br />the QR, HI, and Third and Second White Sandstone aquifers, <br />respectively, at the GE site. Water levels in the @R and HI <br />aquifers have shown little change in 1991. Water levels in well <br />• GE3 show a gradual decline in 1990. Little change in the water <br />2-7 <br />