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_ water year Cyprus collected the samples and ACZ laboratories <br />• analyzed the samples. <br />GROQND WATER NONZTORZNG <br />B~droak <br />Four wells in the Wadge Overburden (which includes the Wadge Coal) <br />are monitored. The wells are in the vicinity of Mines No.l and <br />Eckman Park. <br />Water Levels <br />Water levels in the four Mine No. 1 Wadge Overburden wells have <br />been measured since 1979 (Figures 4 through 6). The water levels <br />generally drop when strip mining occurs nearby, but recover when <br />the area is backfilled. The data indicates that the water levels <br />in the Wadge overburden vary seasonally, with levels typically <br />rising following spring snowmelt and recharge and then declining <br />through the summer, fall and winter. <br />Water Quality <br />The water quality data for the Mine No. 1 Wadge Overburden wells <br />are summarized on Tables 4 through 10. A plot of dissolved solids <br />is presented on Figure 7. The baseline water quality of the Wadge <br />Overburden is characterized by a sodium-bicarbonate type water with <br />• a dissolved solids level of approximately 500 mg/1. Elevated <br />dissolved solids levels in well 009-74-4, 026-79-4 and 006-82-74C <br />appears to coincide with water level recovery following backfilling <br />and reclamation, indicating that they are effected by seepage from <br />the spoils aquifer. Wells showing elevated dissolved solids tend <br />to also have elevated sulphate, calcium and magnesium and reduced <br />SAR compared with undisturbed Wadge Overburden groundwater <br />chemistry. This is consistent with mixing spoils water which is <br />characterized by elevated dissolved solids, sulfate, calcium and <br />magnesium as discussed below. The data does not indicate any <br />significant changes in the trace metals concentrations. <br />Alluviua <br />Alluvial sediments are monitored in the Foidel creek valley <br />upstream and downstream of Mines 1 and in the Fish Creek valley <br />upstream and downstream of Mine 2. Four wells completed in the <br />Foidel Creek alluvium are monitored. Three wells completed in the <br />Fish Creek alluvium are monitored. <br />Water levels <br />The plots of the historic water levels in the four Foidel Creek <br />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 <br /> <br />