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water year over the prior year, but levels aze well within the scope of prior year's fluctuations. Manganese levels have shown a rise over the past two water years, though this is likely an artifact of more precise reporting on the part of the laboratory. Iron and sodium concentrations have remained consistently within recorded ranges over the past year. In this water year's sampling of the chemical constituents of well 95-1, the only parameters that showed noteworthy increases in concentrations were ammonia, chloride, and manganese. Ammonia concentrations this water yeaz were 1.5 mg/1 during June 2000, an increase from the April 1999 level of less than O.l mg/I. This is the highest recorded level for this constituent at this well. Further sampling will determine whether this is a significant trend or a one time anomaly. Chloride concentrations at well 95-1 have always been significantly higher than the other two wells. During the last two water years, chloride levels have increased from the 30-40 mg/1 range to the 70-80 mg/1 range. Manganese concentrations (and detection levels) have fluctuated greatly during the last six water years, and while the 2000 water yeaz concentrations are higher than the prior water year, the concentration is within the range recorded in the mid-1990's. Bicarbonate, calcium, iron, magnesium, sodium, and sulfate concentrations in well 95-1 remained at levels consistent with those of the last two to three water years. Many of the trace elements found to be below the detection limits for the springs sampled were also found to be below detection limits for the wells sampled. These trace elements are arsenic, cadmium, mercury, nitrite, nitrate, nitrate/nitrite, selenium, and zinc. Other trace elements found at detectable limits are consistent within each well at levels that do not indicate high or low fluctuations of these elements. Overall, elements that aze detectable and those that aze not have been consistent throughout the groundwater well monitoring program at the Carbon Junction Mine. CONCLUSIONS Hydrologic sampling of two natural springs occurring below the mine site showed no significant changes in parameter values during the 2000 water year that would indicate concerns with water associated with the area of the coal mining operation. Springs 3 and 4 both flowed during the sampling event in June 2000. No significant changes were observed in the chemical composition ofthe springs. Groundwater wells above and below the mine site showed a few significant changes in pazameter values during the 2000 water yeaz. Well 17-B (above the mine) showed an increase in concentrations of chloride this water year. While the value for this parameter is within the historic levels recorded during the past six water years, this parameter bears observation during the 2001 water year. Well 95-1 (below the mine) showed increases of note in ammonia and chloride. Both constituents showed marked increases this water year • -7-