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and R less than 3500 feet to the west. Water levels were rapidly <br />• <br /> rising in 1984 and had declined to an average rate of three feet <br /> per year during 1986. These rises are thought to be due to <br /> increased recharge from the increased precipitation in 1983 and <br /> 1984 (see Figure 2-1>. Water levels declined at a higher rate <br /> through 1987 and 1988 with the water levels dropping <br /> approximately 18 feet in the last two years. At least some of <br /> this decline is thought to be due to a decline in the recharge <br /> from the decline in precipitation. Some of the decline is also <br /> likely to be caused by the adjacent mine dewatering in the D and <br /> E pits. <br /> Water levels for well GA2 (see Figure A-2), which is <br /> completed in the KLM aquifer, responded similarly in the last <br />• five years with a water-level rise each spring followed by a <br /> decline for the remainder of the year. The net result of the <br /> water-level changes in well GA2 for the past year is a decrease <br /> of approximately three feet. Water levels in the KLM aquifer in <br /> this area rose due to higher rates of recharge, while the decline <br /> the last three years is thought to be caused by only the decline <br /> in recharge. <br /> Well GB1 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 <br /> I coal seams were mined. Mining occurred in this area during <br /> 1985. Figure A-3 shows that water levels were rising at a steady <br /> rate during the period 1985 through September 1987. Well GB1 was <br /> airlifted for production in September in 1987 and 1988, for <br />• monitoring of the recovery of water levels. Data presented from <br /> September through September of each of the last two years shows <br />2-4 <br />