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quality sampling on a quarterly basis. Per TR03-42, field monitoring requirements were reduced to a quarterly <br />basis, and water quality sampling to semi-annual. All sampling requirements for Fish Creek Alluvia] wells were <br />met. Tables 23 through 26 provide summaries of the 2005 Water Year data collected at each site. Tables 23a <br />through 26a provide POR statistical summaries of collected data at each site. Tables 23b through 23b provide <br />POR statistical summaries of water level data at each site. Figures 34 through 37 provide graphical <br />representations of water levels and selected water quality parameters recorded a[ each site. <br />In addition to the five wells discussed above, three new alluvial wells, AVF-13 and AVF-14 (installed in August <br />2001), and AVF-1S (installed June 2002) were added per PR99-OS, 4e-7. These wells require monitoring for <br />water levels and field parameters on a quarterly basis, and water quality sampling on asemi-annual basis. <br />Water levels at well 006-AY-1, located on Fish Creek upstream of the Southwest Mining District and Mine 2, <br />had exhibited a relatively steady increase in water Level from approximately 1990 through 1994 (see Figure 38). <br />From 1994 through 1997, that trend has reversed and is generally decreasing from 1994 through 2005 The <br />maximum fluctuation in water level at this site over the period of record is 8.5' to date. POR conductivity data <br />has been relatively consistent the last several years (Figure 35). Well 006-AZ-3 is situated downstream of 006- <br />AY-1 and below [he Fish Creek Borehole. Well 006-AZ-3 is monitored in conjunction with surface water site <br />307 and the water level relationship is presented as Figure 36. Again in 2005, the interrelationship between <br />alluvial groundwater and surface water is- evident on this plot. POR conductivity data has exhibited a general <br />increase since the late 1980's (Figure 37). <br />• Downstream of 006-AZ-3 are new alluvial wells, AVF-13, AVF-14, and AVF-1S. Data for sites AVF-13, AVF- <br />14, and AVF-15 are provided in Tables 29, 30, and 31, respectively. Figures 38 through 43 provide graphical <br />representations of water levels and selected water quality parameters recorded at each new site. Note that <br />localized mining subsidence along Fish Creek occurred in the area of well AVF-15 during 2005. <br />Well 008-AU-3 and surface water site 305 monitor water levels upstream from the Fish Creek Tipple area with <br />data presented on Figure 44. The furthest downgradient Fish Creek alluvial monitoring well is 008-AW-3 (Figure <br />46} located near the Fish Creek Tipple. No unusual water level fluctuations were noted at any of these sites <br />during 2005. Similarly, 2005 conductivity values for these two sites were within historical ranges (Figures 49 <br />and 47, respectively). <br />No new minimum or maximum values were recorded at well 006-AY-I (Table 23), 008-AU-3 (Table 24), or <br />008-AW-3 (Table 25) in 2005. Monitored water quality parameters returned values at the Fish Creek alluvial <br />wells typically within previously established ranges. <br />Trout Creek Alluvial Groundwater: During 2005, one Trout Creek alluvial monitoring well (008-AT-1) <br />required monitoring for water levels and field parameters on a monthly basis, and water quality sampling on a <br />semi-annual basis. One additional well (Janes well) required monitoring for water levels and field parameters on <br />a quarterly basis, and water quality sampling for full suite parameters on an annual basis and sulfate on a annual <br />quarterly basis. Figures 48 through Sl provide graphical representations of water level and field conductivity <br />information to date. Table 28 provides the ZOOS data for this well. <br />8 <br />