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~~ <br />infiltration stimulates a water level rise, and as the drier fall season <br />approaches, water levels decline. Generally, water levels at most <br />alluvial wells fell within their historic ranges. However, Well 70 <br />(located on lower Grassy Creek), continues to exhibit a decreasing water <br />level trend. Water levels here, as well as with most alluvial wells, <br />are affected by the absence or presence of beaver dams in the adjacent <br />stream. <br />- Lennox Overburden/Wadge Overburden. The three wells completed in <br />these formations (Wells SLO42, SOV41, and SOV42) exhibit normal seasonal <br />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 <br />event, This year, all wells except SL042 displayed water levels that <br />fell within their historic ranges. Well SLO42 experienced its highest <br />water level ever in May 2001. <br />- Wadge Coal. Five wells monitor this seam. Wells 16 and 17 are in • <br />hydraulic communication with the Wadge Impoundment (NPDES 002 Pond) .as <br />indicated by their water level changes in response to changes in the <br />pond's water level. Well 19 is a flowing well fitted with a pressure <br />gage that normally exhibits its highest pressure values in the fall. <br />Well SW41 exhibits the same typical seasonal variation as noted for the <br />alluvium. well 42 exhibits very little seasonal variation and a <br />decreasing water level trend since 1997. All of these wells this year <br />displayed water levels within their historic ranges. <br />- Wolf Creek Overburden/Wadge Underburden. Four wells monitor the Wadge <br />Underburden in the Wadge Coal mining area. Well 6 exhibits the same <br />typical seasonal variation as noted for the alluvium and, up until 1997, <br />exhibited an increasing water level trend. Water levels at this well <br />have recently dropped, but continue to fall within its historic range. <br />Well 8P1 continues with a long-term decreasing water level trend. A <br />casing obstruction in Well 8 (adjacent observation well to Well 8P1), <br />which first occurred in September 1996, prevents measurements of water <br />levels. Well 11 (another flowing well fitted with a pressure gage) <br />continues with a long-term increasing water level trend. One well <br />4 <br />