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Figure 43, TDS concentrations at well 008-AV-2 appear to have stabilized somewhat during 1996. TCC will continue to monitor the direction of this trend. At well 009-5-10 (Table 20), new maximum SAR values were documented in both November 1995 and May 1996. A detectable concentration of nitrite was noted in May as well to establish a new maximum for this parameter. All other measured parameters at well 009-S-10 re[trmed values within the previously established ranges throughout the monitoring year. At well 001-5-5 (Table 21), an elevated nitrate measurement was noted in November 1995. In March, new maximum values for calcium, lab conductivity, hardness, TDS, and sulfate were established along with a new minimum value for SAR. Elevated levels for lab conductivity, TDS, and sulfate persisted into May with subsequent readings retuming to more typical levels. With [he exception of a new maximum Field conductivity reading recorded in October, 1995 at well 008-AV-2 (Table 22), all 1996 values were documented to occur within previously established ranges at this site. Field parameter measurements at well 008-AV-I (Table 23) remained within expected ranges throughout 1996. Wells FO-I (Table 24) and FO-4 (Table 25) both e.~ltibit field conductivities notably higher than alluvial wells upstream and downstream of these sites. Well FO-1 is characterized with calcium and sulfate as the dominant cation and anion respectively. Well FO-4 exhibits sodium and sulfate as the dominant ions. Fish Creek Alluvial Groundwater: During 1996, five Fish Creek alluvial wells (006-AY-I, 006-AZ-3, 006-AW- • 2, 008-AU-3 and 008-A W-3) required monitoring for water levels and field parameters on a monthly basis, and water quality sampling on a quarterly basis. Well 006-A W-2 was frozen in March -field parameters and a water quality sample were not obtained. A bent casing at this well prevented the collection of field parameter data in August and September. Repairs to the well were competed December 12, 1996 with sampling resuming on December IG. Tables 26 through 30 provide summaries of the 1996 Water Year data collected at each site. Tables 26a through 30a provide period of record statistical summaries of collected data at each site. Figures 48 through 57 provide graphical representations of water levels and selected water quality parameters recorded at each site. Water levels a[ well006-A Y-1, located on Fish Creek upstream of the Southwest Mining District and Mine 2, had exhibited a relatively steady increase from approximately 1990 through 1994 (see Figure 48). During 1995 and 1996, water levels were more erratic with the recent trend having reversed. The maximum fluctuation in water level at [Iris site over the period of record is 7.5' to date. Well OD6-AZ-3 is situated downstream of 006-AY-I and below the Fislt Creek Borehole. Well 006-AZ-3 is monitored in conjunction with surface water site 307 and the water level relationship is presented as Figure 50. Further downstream, well 006-AW-2 and surface water site 1002 are monitored and water levels are plotted as Figure 52. Again in 1996, the interrelationship between alluvial groundwater and surface water is evident on these two plots. Well 008-AU-3 and surface water site 305 monitor water levels upstream from the Fish Creek Tipple area with data presented on Figure 54. The furthest downgradient Fish Creek alluvial monitoring well is 008-AW-3 (Figure 56) located near the Fish Creek Tipple. • No unusual water level Fluctuations were noted at any of these sites during 1996. -7-