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1 <br />Water Quality - The water quality data is summarized in Tables 12 through 17 <br />' for the Foidel Creek wells and Tables 18 through 23 for the Fish Creek <br />wells. The historic field conductivity levels for the Foidel Creek wells <br />' are plotted on Figure 14. The historic field conductivity levels for the <br />fish Creek wells are plotted on Figure 15. Seasonal variation occurs in the <br />' wells. This is probahly due to flushing effect of the relatively low <br /> dissolved solids surface water which recharges the alluvial aquifers during <br /> spring runoff. There is no indication of any significant increase in the <br /> dissolved solids or trace metals in 1989. Due to the relatively low <br /> permeability of the alluvial sediments and the flushing effects of the <br />' spring runoff impacts on the sediments will be slow to occur and will be <br /> very localized. <br />' The water quality data for the Fish Creek alluvial wells does not indicate <br />' any impact from mining. The data does not indicate any significant changes <br />in the trace metals concentrations. The iron and manganese levels in the <br />wells, including the upstream well, are often relatively high. <br />1 <br />Spoils <br />Five wells in the spoils are monitored. They are all located at Mine 1 and <br />were installed in 1985. Two of these are only monitored for water level. <br />' Water Levels - The plots of the historic water levels in the spoil wells are <br />presented on Figures 16 tirrouglr 19. The water levels normally have a <br />similar pattern to the alluvial wells: they respond rapidly to the spring <br />' runoff and then decline rapidly in the summer. Wells 026-SP-1 and 026-SP-3 <br />are often dry by the fall. These water levels closely mirror the pattern of <br />the spoil spring discharges discussed later in the report. There was less <br />seasonal variation in 1989 than in previous years. <br />Water Quality - The water quality data is summarized in Tables 24 through 29 <br />' for the spoil wells. The historic dissolved solids concentrations for the <br />1 <br /> <br />' -4- <br />