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1 <br />Water Quality - The water quality data is summarized in Tables 13 to 18 for <br />' the Foidel Creek wells and Tables 19 to 23 for the Fish Creek wells. <br />The historic dissolved solids concentrations for the Foidel Creek wells are <br />' plotted on Figure 12. Seasonal variation occurs in the wells, this is due <br />to flushing effect of the relatively low dissolved solids surface water <br />' which recharges the alluvial aquifers during spring runoff. There was 'a <br />small increase in the average salt content of the water in the water year <br />1987. This is probably due to the relatively low runoff. <br />1 <br />Since there are no discharges from the underground mine to Fish Creek there <br />' are no impacts from the mine. The water quality data for the Fish Creek <br />alluvium is presented for baseline purposes only. The water quality in the <br />' Foidel Creek alluvial wells upstream and downstream of the underground mine <br />discharge are very similar. No inpact form the discharge is evident. The <br />' water is a sodium-sulphate type. No increase in metal concentrations was <br />observed. <br /> <br /> <br /> <br />1 <br /> <br /> <br /> <br /> <br /> <br />1 <br />' -5- <br />