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- Alluvium. The alluvial monitoring wells are located along Cow Camp <br />(Wells 46 and 69), Bond (Well 68), Grassy (Wells 33, 34, 70, and 71), <br />and Little Grassy Creeks (Wells 6, 31, 31A, and 32). These wells <br />exhibit seasonal fluctuations in water levels. The spring runoff- <br />infiltration stimulates a water level rise, and as the drier fall season <br />approaches, water levels decline. Water levels are also affected by the <br />absence or presence of beaver dams in the adjacent stream. Generally, <br />water levels at most alluvial wells fell within their historic ranges. <br />Wells 33, 34, 70 and 71 exhibited this year water levels closely <br />approaching historic lows. <br />- Lennox Overburden/Wadge Overburden. The three wells completed in <br />these formations (Wells SLO42, SOV41, and SOV42) usually exhibit normal <br />seasonal variations, that is, lowest water levels in the fall and <br />winter, and highest in the late spring/early summer after the spring <br />runoff recharge event. This year, all wells displayed water levels that <br />fell within their historic ranges, except for Well SLO42, which <br />displayed two of the highest water levels ever. <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, except for Well <br />SW41, which displayed a May water level that was the highest ever. <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 exhibits a <br />generally increasing water level trend. Well 8P1 continues with a long- <br />term decreasing water level trend. A casing obstruction in Well 8 <br />4 <br />