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i~ <br />~~ <br />' Well GBl is completed in the sandstone below the I coal (KLM <br /> aquifer) and is located at the base of the A pit,, where the H and I <br />' <br /> coal seams are mined. Mining occurred in this area during 1985. <br />' Figure A-3 shows that water levels have been rising at a steady rate <br /> during the last year. This rise could be due to rE>covery after m ining <br />' through the A pit or to a natural water level change. <br />Water levels in well GB2, which is completed in the Third White <br />Sandstone, were very steady until 1982 when a drop in water level of <br />approximately six feet occurred over a two year period. Water levels <br />the last three years have gradually declined. These declines are <br />probably due to mining in the A pit, but also could be natural <br />' variations. <br />' Well GB5 monitors the HI aquifer at the base of the A pit. Water <br />' levels (see Figure A-5) in this well gradually rose as they did in <br />1984 and 1985. The majority of this water level response is thought <br />' to be caused by the A pit. If water levels continue to rise at the <br />present rate, they will be back to pre-mine conditions by 1990. <br /> <br /> The GC wells are approximately three miles; from the nearest <br />' mining in the H and I coal seams. Well GC1 is <;ompleted in the HI <br /> aquifer and has shown a considerable amount of water level fluctuation <br />' h <br /> which i s all thought to be natural. Figur e A-6 at water <br />shows t <br />' levels have been steady in 1986 indicating ver}! little change in <br /> storage in the HI aquifer in this area. <br /> <br />' 2-3 <br />