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1 <br />1 <br />' Bedrock <br />1 <br /> <br /> <br /> <br />1 <br /> <br />1 <br /> <br />1 <br /> <br /> <br /> <br />GROUND WATER MONITORING <br />Five wells in the Wadge Overburden (which includes the Wadge Coal) are <br />monitored. Four are in the vicinity of Mines No. 1 and Eckman Park. <br />Thefifth (026-87-9) is in the vicinity of the proposed Little Middle Creek <br />Mine. <br />Water Levels - Water levels in the four Mine No. 1 wells have been measured <br />since 1979 (Figures 4 through 6). The water levels drop when strip mining <br />occurs nearby, but recover at least part way when the area is backfilled. <br />The data indicates that the water levels in the Wadge overburden varies <br />seasonally: the water levels in the summer are higher than in the winter. <br />Water levels for well 026-87-9 are presented in Figure 7A. They indicate a <br />possible large seasonal variation in water levels in the Wadge Overburden. <br />Water Quality - The water quality data for the Mine No. 1 Wadge Overburden <br />wells is summarized on Tables 4 through 10. A plot of dissolved solids is <br />presented on Figure 7. The baseline dissolved solids level appears to be <br />approximately 550 mg/1. Elevated dissolved solids levels in wells 009-79-M1 <br />and 006-82-74C appears to indicate that it is effected by seepage from the <br />spoils aquifer. Where the dissolved solids are elevated the sulphate, <br />sodium and the SAR are elevated. The data does not indicate any significant <br />changes in the trace metals concentrations except for elevated iron in Well <br />009-79-4. The water quality data four Well 026-87-9 is present on Table 11 <br />and the dissolved solids are plotted on Figure 7B. The baseline dissolved <br />solids concentration far the well is approximately 600 mg/1. No long term <br />trend in water quality is evident. Well 026-79-4 may be experiencing an <br />increase in dissolved concentration. Aclclitional data is required to conFirm. <br />' Alluvium <br />1 <br />1 <br /> <br />Sediments in the Foidel Creek up and downstream of Mine 1 are monitored and <br />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 en Figures 8 through 10. The plots of <br />- ~ - <br />