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<br />2001 in well GP-8 and continued on a smaller decline rate in 2002 through 2005. A significant <br />amount of well dewatering occurred from the G pit azea in 2005. <br />Steady water levels had been observed in the last four years in well GMP-1 while a small <br />increase was observed in 2005. The previous ten yeazs show a water level rise due to the movement <br />of Pit A to the east of this area. No dewatering was produced from the G and Z pits in 2005 while <br />some dewatering occurred from the A and F pit. The increase in water levels in well GD-3 in 2005 <br />indicates that the rechazge increased in 2005. The water levels in KLM well GP-2 overall gradually <br />declined the last few years after a previous water level rise that followed a larger decline. The <br />previous decline could have been caused by the decrease in recharge and mining in this area. <br />Water-level changes aze discussed in more detail in the following section. <br />2.1.2 WATER-LEVEL CHANGES <br />• Water-level changes for 2005 aze presented in Figures A-1 through A-14 in Appendix A. <br />The table in Appendix A list all historical data for the Trapper Mine. The wells aze grouped on the <br />water-level plots according to aquifer where possible but, in most cases, are grouped by similaz <br />water-level elevations. Table A-1 in Appendix A presents a tabulation of the water-level elevations <br />for each of the monitoring wells. Figure 2-1 presents the total annual precipitation at the Trapper <br />Mine from 1978 through 2005. Precipitafion declined from a high in 1983 to a low in 1988 and had <br />increased again to a peak in 1993 with a below average value in 1994. The years 1995 through 1997 <br />had above average precipitation relative to the Trapper Mine record, while 1998 through 2004 were <br />below. The precipitation in 2005 was 2.4 inches above normal. Water levels in many of the wells <br />reflect the natural variations in recharge. These changes may lag the actual precipitation events due <br />to the time it takes the head change to move through the aquifer to the monitoring well. <br />Trapper Mining Company 2-3 <br />2005 Annual Report <br />