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• levels (GP-1) also showed a larger decline in 2002, which is due to mine dewatering in the <br />G pit area in 2002. No pit dewatering occurred from the G pit in 2002 but well dewatering <br />in this area was used. Only small amounts of water drainage into the G pit occurred in <br />2002. <br />Steady water levels were observed in the last two years in well GMP-1 with the <br />previous ten years showing a water level rise due to the movement of Pit A to the east of <br />this area. No dewatering was produced from the Z pit in 2002. The gradual decline in <br />water levels in well GD-3 in 2002 indicate that recharge was not large enough to maintain <br />this level. Wells GB-1 and GB-2 had increases in water level, probably due to recharge and <br />the amount of time since mining in this area. Mining is moving farther away from these <br />wells with time. The water levels in KLM well GP-2 rose in 2002 after a previous decline. <br />The previous decline could have been caused by the decrease in recharge and mining in <br />this area. <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 2002, as well as all historical data, are presented in <br />Figures A-1 through A-16 in Appendix A. The wells are grouped on the water-level plots <br />according to aquifer where possible but, in most cases, are grouped by similar water-level <br />elevations. Table A-1 presents a tabulation of the water-level elevations for each of the <br />monitoring wells. Figure 2-1 presents the total annual precipitation at the Trapper Mine <br />from 1978 through 2002. Precipitation declined from a high in 1983 to a tow in 1988 and <br />had increased again to a peak in 1993 with a below average value in 1994. The years <br />1995 through 1997 had above average precipitation relative to the Trapper Mine record, <br />2-3 <br />