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• Alluvium. The alluvial monitoring cells are located along Cou Camp (Wells 46-A and 69-A), <br />Bond (Well 68-A), Grassy (cells 33-A and 34-A), and Little Grassy Creeks (Wells 6-A, <br />31-A1, 31-A2, and 32-A). These wells exhibit seasonal fluctuations in eater levels. the <br />spring runoff-infiltration stimulates a eater level rise, and as the drier fall season <br />approaches, water levels decline. Late summer or fall water levels were the deepest for <br />their entire period of record for all alluvial wells except Well 46-A (fall levels were <br />deepest since December, 7982). These declines of water levels are attributed to four <br />years of sustained, below average precipitation. <br />Lennox Overburden/Lennox-Wadge Interburden. Wells completed in these formations exhibit <br />normal seasonal variations, that is, lowest water levels in the fall and winter, and <br />highest in the late spring/early summer after the spring runoff recharge event. .well <br />41-LWI exhibited its lowest fall way er level for its entire period of record. well 21-LWI <br />has exhibited law water levels for the past three years, but not as low as water levels in <br />1981 to 1983. Water levels in this cell have likely been affected by regrading of the fly <br />ash pit upgradient of this well and construction of a sediment pond downgradient of this <br />well, both of which occurred in the summer of 1982. Well 42P1-LWI has shown a decline in <br />. water levels since August 1985 due to dewatering from an adjacent mine pit. A slight <br />increase in water levels, however, was noted in 7989 and 1990- Nell L2P2-LO has shown a <br />slight increase in water levels over the past years up to the end of 1968, due likely co <br />the stripping of adjacent overburden material with a resulting increase in the recharge <br />area. The dramatic increase in water levels (approximately 30 feet) for Well 42P2-LO in <br />1989, along with the smaller increase noted earlier at adjacent Well 42P1-LWf, were likely <br />due to bac kfitling of the adjacent mine pit performed in the fall of 7989. The highuall <br />side of this pit was tut into so as to fill in the pit and reduce the height of the <br />highwall. This regrading cut into the Lennox overburden and Lennox-Wadge interburden, <br />thereby increasing the available area for potential recharge to these formations. The <br />resaturation of spoils in the bac kfilled pit may have also contributed to the increase in <br />water levels. <br />Wadge Coal. Wells tb-W and 17-W are in direct hydraulic communication with the Wadge <br />Impoundment (002 pond) and showed a significant decline in eater levels in the winter of <br />86/87, corresponding with the low level in that pond caused by pumping water for the truck <br />wash system, pumping water for dust suppression, and tow runoff. Normal water levels <br />returned as the impoundment refilled in the spring. Water levels since the winter of <br />86/87 have not dropped as significantly due to better management of eater usage from the <br />3 <br />