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declines in the levels in Wells 81-01 and 83-01 between 1988 and 1990 appear to <br />have leveled off since the middle of 1990, and appear to be recovering with increases <br />in 1994. Water levels in these two wells and in Well TR-7A measured during 1994 are <br />similar to the levels measured in the early eighties. The slight recovery from 1984 <br />through 1988 is apparently the result of a shift in the location of mining to an area <br />further up dip. Water level fluctuations since 1983 are greater in Well 81-01 as <br />compared to Wells TR-7A and 83-01 as would be expected since this well is closer to <br />the location of mine dewatering. The water levels in Well 83-02 show a different <br />pattern. The water level decline of about 150 feet from 1987 to mid 1989 in Well 83- <br />02 is determined to be related to mine dewatering as Mine 5 workings approached the <br />location of the well. The more abrupt 200 foot decline in water levels observed near <br />the end of 1989 and beginning of 1990 is thought to be a drawdown response due to <br />subsidence as its is located on only a few hundred feet horizontally from an F seam <br />longwall panel which was mined in a similar time frame. The water level stabilized <br />until 1994 when it recovered to the 1983 levels. Wells TR-4 and 83-03 are located at <br />greater distance horizontally from the active operations for mines 5 and 6. Water <br />levels in Well TRH appear to be related to the fluctuations observed on all three of the <br />downgradient Middle Sandstone Wells: 81-01, 83-01 and 83-02. The water level <br />decline in TR-4 prior to 1984 and the subsequent recovery up to 1988 closely parallels <br />the trends observed in Wells 81-01 and 83-01. The decline during the first part of 1991 <br />also parallels the trend in these two wells. However, the rapid decline during the last <br />part of 1989 and the first part of 1990 appears to follow the trend observed in Well 83- <br />C-81-044 1994 AHR Page 3 <br />