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Foidel Creek Alluvial Groundwater: During 1994, three Foidel Creek alluvial wells (009-5-10, 001-5-5, . and 008-AV-2) required monitoring for water levels and field parameters on a montlily basis, and water quality sampling on a quarterly basis. An additional well (008-AV-1) required only monthly monitoring for water levels and field parameters. All monitoring requirements were met at these sites. Tables 11 through 14 provide summaries of the 1994 Water Year data collected at each site. Tables l la through 13a provide period of record statistical summaries of collected data at each site. Figures 20 through 28 provide graphical representations of water levels and selected water quality parameters recorded at each site. Water levels during 1994 remained consistent with established ranges and patterns and showed the typical seasonal variability of elevated water levels in the spring. Well 009-S-10 provides data for the alluvial aquifer upgradient from the mine portals. Well 001-S-S is located just downgradient form the mine portals and surface facilities location and is monitored in conjunction with surface water monitoring site 8. Figure 24 is indicative of the general relationship between the alluvial groundwater elevations and surface water elevations at these two sites. Wells 008-AV-1 and 2 are monitored in conjunction with surface water site 304 at a point on Foidel Creek approximately 1000 feet upstream of the confluence of Foidel and Middle Creeks. Water levels in these wells and the stream show the typical seasonal interrelationship of relatively rapid increases and declines associated with spring runoff (Figure 25). The longer term trends in water levels at these sites generally parallel the fluctuations observed in annual streamflows. • Field conductivity measurements in general at well 001-S-5 are higher than the upgradient site 009- 5-10. Conductivity values at well 009-S-10 fluctuated within previously established ranges during 1994 while an increasing trend is noted in the 1994 data for well 001-5-5. Field conductivity measurement at wells 008-AV-1 and 2 are comparable to well 001-5-5 and occurred primarily within established ranges for these sites. As indicated on Figure 28, TDS concentrations at well 008-AV-2 appear to be increasing. TCC will continue to monitor the direction of this trend. Alkalinity values in March and May were noted to be slightly higher than the previously established range for this parameter at well 009-5-10. All other measured parameters returned values within the previously established ranges. At well 001-S-5, elevated conductivity measurements were noted in May, June, and August with a new maximum TDS value established in August as well. WeII 008-AV-2 exhibited a new maximum conductivity value in May which was followed by values within the normal range. In addition, elevated manganese concentrations were noted during the November, May, and August sampling episodes. Field parameter measurements at well008-AV-1 remained within expected ranged throughout 1994 with the exception of an unusually low pH reading in August. Similar low August pH values were noted at sites 009- S-10, 001-5-5 and 008-AV-2 however all values returned to normal levels the following month. Fish Creek Alluvial Groundwater: During 1994, five Fish Creek alluvial wells (006-AY-1, 006-AZ-3, 00(r AW-2, 008-AU-3 and 008-AW-3) required monitoring for water levels and field parameters on a monthly • basis, and water quality sampling on a quarterly basis. All monitoring requirements were met at these sites. Tables 15 through 19 provide summaries of the 1994 Water Year data collected at each site. Tables 15a -5-