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1 <br />GROUND WATER MONITORING <br />1 <br />' Bedrock <br />t Four xells in the Wadge Overburden (which includes the Wadge Coal) are <br />monitored. <br />' Water Levels - Water levels in the wells have been measured since 1979 <br />(Figures 4 through 6). The water levels drop when strip mining occurs <br />' nearby, but recover at least part way when the area is backfilled. The data <br /> Indicates that the water levels in the Wadge overburden varies seasonally: <br />' the water levels in the summer are higher than in the winter. <br />' Water Quality - The water quality data for the Wadge Overburden wells is <br />summarized on Tables 4 through 10. A plot of dissolved solids is presented <br />on Figure 7. The baseline dissolved solids level appears to be <br />' approximately 550 mg/1. Elevated dissolved solids levels in well 009-79-4 <br />appears to indicate that it is effected by seepage from the spoils aquifer. <br />Where the dlssolved solids are elevated the sulphate, sodium and the SAR are <br />elevated. The data do~~ not indicate any significant changes in the trace <br />' metals concentrations except for elevated iron in Well 009-79-4. <br />' Alluvium <br />Sediments in the Foidel Creek up and downstream of M~n 1 are monitored and <br />t sediments in the Fish Creek valley up and downstream of Mine 2 are monitored. <br />' Water Levels - The plots of the historic water levels in the four Foidel <br />Creek alluvial wells are presented on Figures 8 and 10. The plots of the <br /> historic water levels in the Fish Creek wells are presented on Figures 11 <br />' through 13. The water levels in the wells show the typical seaso nal pattern <br /> of relatively rapid increase and decline due to spring runoff. While the <br />' seasonal variation in water levels in the alluvial sediments is readily <br /> apparent, no impact from the mining is evident. The discrepancy <br />1 <br />1 <br />' - 3 - <br />