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transmissivity and storativity appear to be quite low due to the highly lenticular and discontinuous nature of the Mesaverde Group. It is thought that transmissivity and storativity values will be variable over large areas. Two wells remain that aze monitored for water level, S10-WC and S15-WC, both of which are up-gradient of the mining operation. Water in both these wells retained a relatively uniform level throughout the early yeazs of mine life. S10-WC level varied around 79 feet below ground surface (bgs). After 1989, the levels have dropped and appear to have stabilized around 83 feet bgs. S15-WC levels varied around 80 feet bgs until 1993, at which time levels have been erratic, ranging from 84 feet bgs to 108 feet bgs. Wells S35-WC and S37-WC were used to monitor water levels until 1996, but have been abandoned. Historic data show that water in the Wolf Creek Coal is a calcium sulfate type with an average TDS of 745 mg/1. Wadge Coal and Overburden The Wadge Overburden is considered to be an aquifer in this area and for purposes of this discussion, is collectively grouped with the Wadge Coal aquifer. Four wells monitor [he Wadge Coal seam and overburden, and two of [he wells are in hydraulic communication with the Wadge Impoundment. Three wells remain in what is referred to as the Wadge Lennox interburden. These wells exhibit normal seasonal variations. Aquifer tests performed in the Wadge Coal seam indicate that the Wadge aquifer exhibits asemi-confined condition with a transmissivi[y value of 377.1 gallons per day per foot (gpd/ft). W adge water levels, dependent upon well proximity to the rechazge area, show some seasonal variation. Alluvium There are three alluvial aquifer systems within the Seneca II permit area: the Grassy Creek alluvial aquifer, the Cow Camp Creek alluvial aquifer system (drainage from below 004 pond to Fish Creek), and the Bond Creek alluvial aquifer (drainage from below 008 pond to Fish Creek). The Fish Creek alluvial aquifer is not within the Seneca II permit azea, but may be affected by water discharging from the permit area. zz