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1 <br /> The water quality data for the <br />T <br />bl <br />9 <br />14 <br />l <br />f di <br />A Wadge Overburden aquifer wells is summarized on <br />l <br />d <br />lid <br />i <br />d <br />Fi <br />7 <br />T <br /> es <br />to <br />. <br />ot o <br />sso <br />so <br />s <br />s presente <br />on <br />a <br />p <br />ve gure <br />. <br />he plot <br /> does not indicate any trends that appear related to the underground mining. <br /> Wells 006-81-31 and 006-82-38 appear to be contaminated with cement. Well <br /> 006-82-38 is being dropped from the program and well 006-81-3 1 will be replac~,in <br />' 1987. The data does not indicate any significant changes in the trace metals <br /> concentrations. <br /> <br /> Alluvium <br />Sediments in the Foidel Creek valley up and downstream of the portal area are <br />monitored. Also the sediments in the Fish Creek valley within Twentymile Park are <br />monitored.Three wells completed in the Foidel Creek alluvium are monitored. Nine <br />wells completed in the Fish Creek alluvium are monitored. Six of the Fish Creek <br />' alluvial xells (008-AU-1, -2, -3, -4a, -5a, -6a) are in a line across the valley <br />approximately perpendicular to the river upstream of the Fish Creek Tipple. <br />Water Levels - The plots of the historic water levels in the three Foidel Creek <br />alluvial wells are presented on Figures 8 to 10. The plots of the historic water <br />levels in the Foidel Creek Wells are presented on Figures 11 to 14. The water <br />levels in the wells show the typical seasonal pattern of relatively rapid increase <br />' and decline due to spring runoff. A cross-section of the fish Creek valley <br />showing high and low 1986 water year levels in the six wells is presented on <br />' Figure 15. This data indicates that any contribution from bedrock discharge to <br />the alluvium is minimal compared to the recharge from spring runoff. <br />While the seasonal variation in water levels in the Foidel Creek alluvium is <br />readily apparent, no impact from the underground mining is evident. The average <br />' water levels in the three wells has not changed since monitoring began in 1979. <br />Since the underground mining has not yet approached Fish Creek, no impacts are <br />likely. The Fish Creek water level data is presented for baseline purposes only. <br />1 <br />