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1 GROUND WATER MONITORING Bedrock ' Water Levels - Three wells in the Wadge Overburden (which includes the Wadge Coal) are monitored. Water levels in the wells have been measured since 1979 (Figures 4 through 6). Only well 008-79-6 seems to indicate any impact on water levels from mining. The water levels have been rising from 1980 to 1985. This ' is probably due to cessation of mining in the vicinity of the well in 1979 or 1980. Due to the wells proximity to Foidel Creek, the trend may be the result ' of a long-term climatological trend. The data indicates that the water levels in the Wadge overburden varies seasonally: the water levels in the summer are ' higher than in the winter. ' Water Quality - The water quality data for the Wadge Overburden wells 1s summarized on Tables 5 through 10. A plot of dissolved solids is presented on Figure 7. The baseline dissolved solids level is approximately 1000 mg/L. There ' is insufficient data to indicate whether this level, which is significantly higher than background levels in other areas of Twentymile park is due to ' natural causes or is related to mining. There is sufficient data to indicate that this level is not increasing. Where the dissolved solids are elevated the sodium and the SAR are high. The data does not indicate any significant changes in the trace metals concentrations. ' Alluvium ' Sediments at the Foidel and Middle Creek confluence are monitored. Four weils completed in the Foidel Creek alluvium and one well completed in the Middle ' Creek alluvium below the confluence are monitored. ' Water levels - A cross-section of the confluence area of Foidel and Middle Creek showing high and low 1986 water levels in four wells is presented on Figure 8. The plot of t he historic water levels in the four Foidel Creek alluvial wells is ' presented on Figure 9. The plot of the historic water levels in the Middle Creek well is presented on Figure 10. ' -2-