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water levels et Yells 6A7 to 6A3 are higher than they would normally be in May through • July of the pest six years due to recently introduced (Nay, 7989) irrigation in that eras. Wells 6A2, 6A3, 6A4, 7A1, and 7A2 all experienced their deepest fell water levels on record (since 7980) due to dry conditions. One alluvial well, 79A, is situated approximately one-half mile downstream of the MPDES 006 pond on a tributary to Mubbe rson Gulch. It also exhibits eeaeonal variations typical of previously mentioned monitoring wells. Monitoring of the two Yatering Trough Gulch alluvial wells (l1A and 9A) has been discontinued as a result of Technical Revision 27, approved February 17, 1994. Eight additional alluvial wells were added to the monitoring program in October, 7997. Yell 20A is situated immediately above the MPDES 005 Pond and has been dry since monitoring began. Yell 27A is situated next to the lower Sage Creek flume site (SY-S2Y-FG4). Yells 22A and 23A are situated on tributaries to Sage Creek (MPDES 009 end South Tributary drainages, respectively). Yells USGS A1, A3, A8 and A12 are old United States Geological Survey alluvial wells situated along upper Sage Creek and are also e part of gCC's proposed Toast Mine monitoring network. Mater level measurements for all eight wells are required twice a year (most Yells et Seneca II-V ere measured five times a year). Yells 21A, 22A, 23A, and USGS At, A8 and A72 all exhibit typical seasonal • variations. Seasonal variation at Yell USGS A3 is masked by local recharge from ponded water in Sage Creek created by adjacent beaver dams. Wadge Overburden. Most Yedge overburden wells (unless noted) exhibit seasonal variations typical of the overburden aquifer (i.e., shallow in the spring or summer, deepening in the fall). Yell 160V exhibits very little seasonal or annual veri etions. Yell 770V exhibited deepening water levels throughout 7994. Since hydraulic communication is suspected between this well and Pond 006, deepening well water levels may be the result of lower water levels in Pond 006 as a result of dry condi[ions. Wedge Coal. Madge coal wells exhibit the same typical seasonal variations (unleea otherwise specified) noted as the previous aquifers discussed. Due to low aquifer transmissivi ties (range 0.07 to 0.36 ft2/day), water semplinB may mask normal water level fluctuations. Mater levels in ell walla in 199< were within their historic rengea. Yolf Creek Coal. Yell 77VC exhibited the •eme aeaeonel variability es noted previously. Neither well exhibitcd water levels outside the rengea previously observed, nor do they • exhibit any long-term discernible trend. Melt 3YC did not exhibit any recharge in 1994, moat likely ss s result of dry eond(tions. 3