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1 <br />between the water level in Foidel Creek and Well 001-5-5 appears to be due <br />' to a surveying error. The elevations of the two stations (001-5-5 and 8) <br />will be resurveyed. <br />Water Quality - The water quality data ins summarized in Tables 11 through ~6 <br />1 N+ 1 <br />' for the Foidel Creek wells and Tables 17 through 21 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 probably due to flushing effect of the relatively low <br />' dissolved solids surface water which recharges the alluvial aquifers during <br />spring runoff. There was a small increase in the average salt content of <br />' the alluvial water in Water Year 1987. This is probably due to the <br />relatively low runoff in 1987. Also the iron level in Well 001-5-5 <br />increased in 1987. Due to the relatively low permeability of the alluvial <br />' sediments and the flushing effects of the spring runoff impacts on the <br />sediments will be slow to occur and will be very localized. <br />The water quality data for the Fish Creek alluvial wells dop~ not indicate <br />' any impact from mining. The data do~~ 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 />Spoils <br />1 <br />Five wells in the spoils are monitored. They are all located at Mine 1 and <br />' were installed in 1985. Two 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 through 19. The water levels have a similar pattern <br />' to the alluvial wells: they respond rapidly to the spring runoff and then <br />decline rapidly in the summer. Wells 026-SP-1 and 026-SP-3 are often dry by <br />the fall. These water levels closely mirror the pattern of the spoil spring <br />' discharges discussed later in the report. <br />' Water Quality - Tfie water quality data ),~s`summarized in Tables 22 through 27 <br />for the spoil wells. The historic dissolved solids concentrations for the <br />' -4- <br />