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at the adjacent underground mine. Well GMP-1's water level increases are most likely due <br />to the movement of Pit A to the east of this area. The water level rises in well GD-3 are <br />possibly due to the moving of Pit D farther from well GD-3. Wells GB-1, GB-2 and GF-5 <br />also had increases inwater-level, probably due predominately to mine activities. Mining is <br />moving farther away from these wells with time. <br />Water-level changes are discussed in more detail in the following section. <br />2.1.2 WATER-LEVEL CHANGES <br />Water-level changes for 1997, as well as all historical data, are presented in <br />Figures A-1 through A-17 in Appendix A. The wells are grouped according to aquifer where <br />possible but, in most cases, are grouped by similar water-level elevations. Table A-1 <br />presents a tabulation of the water-level elevations for each of the monitoring wells. Figure <br />2-1 presents the total annual precipitation at the Trapper Mine from 1978 through 1997. <br />Precipitation declined from a high in 1983 to a low in 1988 and had increased again to a <br />peak in 1993 with a below average value in 1994. The years 1995, 1996 and 1997 had <br />above average precipitation. Water levels in many of the wells reflect the natural variations <br />in recharge. These changes may lag the actual precipitation events due to the time it takes <br />for the water to flow through the aquifer to the monitoring well. <br />Figure A-1 presents the water-level elevations for wells GA-1 and GA-2. Wells <br />GA-1 and GA-2 have been mined out in Pit D. Welts GP-1, GP-5 and GP-6 are useful in <br />defining natural variations in the QR aquifer for 1997. Water levels in each of these three <br />wells show a rising trend for the last three years. Wells GP-2 and GP-8 are used as a <br /> <br />2-3 <br />