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1 Bedrock <br />GROUND WATER MONITORING <br />Water Levels -Two wells in the Wadge Overburden (which includes the Wadge Coal) are <br />monitored. Water Levels in the wells have been measured since 1979 (Figures 4 and 5). The <br />two wells seems to indicate some impact on water levels from mining. The water levels have <br />been rising from 1980 to 1985. This is probably due to cessation of mining in the vicinity of <br />the wells in 1979 or 1980. Due to the wells proximity to Foidel Creek, the trend may be the <br />result of a long-term climatological trend. The data indicates that the water levels in the Wadge <br />overburden varies seasonally: the water levels in the spring are usually higher than in the fall. <br />Water Quality -The water quality data for the Wadge Overburden well is summarized on Tables <br />4 through 7. A plot of dissolved solids is presented on Figure 6. The baseline dissolved solids <br />level is approximately 1000 mg/1. There is insufficient data to indicate whether this level, which <br />is significantly higher than background levels in other areas of Twentymile park is due to natural <br />causes or is related to mining. The dissolved solids concentration in Well 008-77-58 is not <br />increasing. The dissolved solids concentration in We11008-79-6 has been increasing since 1986; <br />however, the level is still within the normal range for the Wadge Overburden. The data does <br />not indicate any significant changes in the trace metals concentrations. <br />Alluvium <br />Alluvium at the Foidel and Middle Creek confluence are monitored. Two alluvial wells <br />completed in the Foidel Creek alluvium are monitored. <br />Water Levels -The plot of the historic water levels in the two Foidel Creek Alluvial wells and <br />foidel Creek is presented on Figure 7. The waters levels in the wells and stream show the <br />typical seasonal pattern, of relatively rapid increase and decline due to spring runoff. While the <br />seasonal variation in water levels is readily apparent, no impact from the mining is evident. <br />Water quality -The water quality data is summarized in Tables 8 through 11 for the Foidel <br />Creek alluvial wells. The historic dissolved solids concentrations and field conductivity for these <br />-3- <br />