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values for well GE -1 were variable in 2005. These changes are within natural variations and may <br />or may not be caused by mining. The remainder of the QR wells are located away from present <br />mining activities and could not have been affected, with the exception of well GP -6 near the F pit. <br />The mining at the F pit likely has not affected the water quality in cross gradient QR well GP -6. <br />The water quality in HI aquifer well GP -3, which is close to the reclaimed A pit, has not <br />been influenced by mining. TDS concentrations were steady in 2006 in well GE -2 while an overall <br />steady level in 2006 was observed in well GF-4 after a slight increase for several previous years. <br />This small change may be due to mining but is within natural variations for this aquifer. The water <br />quality in HI well GMP -1 may have been slightly affected by mining, but its concentrations are <br />within the range of natural concentrations. The water quality in HI well GC -1, downgradient of the <br />mining in this area, increased in 2005 but returned to previous level in 2006. The water quality in <br />HI well GP -7, which is east of the areas mined, has not been affected. <br />Mining could have caused concentrations to vary in 3rd White Sandstone well GE -3 but the <br />variations observed are also within natural variation. The 3rd White Sandstone wells GC -2 and <br />GP -9 are downgradient of mining starting in 2000 and changes in water quality in these wells in <br />2006 are similar to previous natural changes. TDS in 3rd White Sandstone well P -8 were large in <br />1996 through 2006 and the magnitude and timing of this increase makes it likely that it was caused <br />by upgradient mining in the A pit. <br />Significant changes in TDS concentrations have been observed in the alluvial wells GC -3, <br />P -1, J -1, and COY. The changes in the Flume alluvial wells had to be natural prior to 2000, while <br />some of the changes in J -1 water could be due to mining. Overall, the TDS for J -1 were higher than <br />normal in 2006 but is very similar to concentrations observed in this well historically and the <br />Trapper Mining Company 6-4 <br />2006 Annual Report <br />