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GP-3 have recovered to above pre-mine levels in this area and show that any depletion of <br />water from upgradient mining has been replaced by recharge to the HI aquifer. The <br />gradual declines in water levels are probably a function of below normal precipitation. The <br />water level in weft GP-4 has also recovered to pre-mine levels. <br />Well GMP-1 (Fgure A-13) was completed in the HI aquifer to monitor ground- <br />water conditions downgradient of the ash disposal site immediately south in A pit. Water <br />levels became steady in 2001, possibly a lull in the recovery from the A pit mining. <br />Wells GP-5 and GP-6 are both completed in the QR aquifer. GP-5 is immediately <br />downgradient of A pit and GP-6 is immediately upgradient of the pit. Water-level data is <br />tabulated in Table A-1 in Appendix A. Figures A-15 and A-16 present water level versus <br />time plots. Both plots are fairly similar, with an increase in water level in wells GP-5 and <br />GP-6 in 2001. An overall rising trend was.observed during the period of above normal <br />precipitation while steady levels with some rise have been observed during the below <br />normal precpitaton. These responses are interpreted to be due to an increase in recharge <br />for a few years followed by a decrease in recharge. The rise in 2001 in water levels <br />indicate good recharge from the below average predpitation. These responses indicate <br />that the mining from the QR seams which is nearest in the F pit mining that began in 1997, <br />has not significantly affected water levels in GP-5 and GP-6. <br />Figure A-15 presents the change in water-level elevation for alluvial well P-1, <br />located in the Pyeatt drainage north of the PA. This data demonstrates classic seasonal <br />responses, highs in winter/spring and lows in late summer/fall. An overall steady water <br />levels occurred the last few years and has been followed by an overall gradual decline in <br />2001. Well P-3 is completed in the Lewis Shale outcrop, which is in contact with the Pyeatt <br />alluvium. it demonstrates the same seasonal variations (Figure A-15) as the P-1 well. <br />2-8 <br />