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exhibit normal seasonal variations, that is, Lowest water levels in the fall and winter, • and highest in the late spring/early summer after the spring runoff recharge event. In 1994, eLL four wells displayed water levels that fell within their historic ranges. Madge Coal. Five wells monitor this seem. Yells 16-Y and 17-Y are in hydraulic communication with the Madge Impoundment (NPDES 002 Pand) because their water levels change in response to a change in the pond's water level. YeIL 41-Y exhibits the same typical seasonal variation as noted for the alluvium. Yell 42-Y exhibits very slight seasonal variations (0.17 feet in 1994). Well 19-Y is a flowing well fitted with a pressure gage that exhibits its highest pressure values in the fell. All five wells exhibited, in 1994, Nater levels that fell within their historic ranges. Yolf Creek Overburden/Yadge Underburden. Five wells (with a -U following the well number) monitor the Wadge Underburden in the Madge Coal mining area, while two wells (with a -YCO) monitor the 4olf Creek Overburden in the Wolf Creek Coal mining area. Yells 2-U and 6-U exhibit typical seasonal variation (as defined in the preceding Alluvium discussion) with 1994 water levels falling within their historic ranges. Well 11-U continues a long-term increasing water level trend with its highest water levels ever. Yells 8-U and 8P1-U • continue their long-term decreasing water level trend. Well 7-YCO exhibits very slight (less than one foot) seasonal variability and long-term variability (3.50 feet since 1986). Well 37-YCO exhibits slight seasonal variability with a long-term decreasing water level trend. ~~h`~s~i,~we ay,_eryt+~',d by ~in<<S-ep°.t'embe,r~:=~ Wolf Creek Coal. Three of the five wells (10-YC, 14-YC, and 37-WC) that monitor the Yolf Creek Coal seam all exhibit the same typical seasonal variability as previously defined. Yell 15-YC has exhibited, in 1994, the lowest Mater levels on record. Yell 35-YC exhibited its highest water level ever in May, 1994, followed by its lowest Mater level in September, 1994. e( 14'`-Y[-~~~$a°s m~ime~~o~ d'ring=2he:.w•i'n'D'ei'. ,of1,943'.94? Spoils. Three wells, 22-5, 23-5, and 24-5 are completed in the upper region of spoils (above the Madge Impoundment) which is generally unsaturated- Yell 23-5 sometimes shows eater in late February, Xarch, and April as snow melts quickly off this westerly facing slope. Well 24.5 has been dry for the entire period of record. The 3.8 feet of saturation observed in 4ell 22-5 is most likely incorrect since adjacent Yells 23-5 and 24-5 are normally dry. The suspect water levels in Yell 22-5 may be a result of water trapped in the borehole (perhaps by a boulder in the spoils that the borehole does not completely penetrate). 3