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• Downsveam of 006-AZ-3 are new alluvia] wells, AVF-13, AVF-14, andAVF-15. Data for sites AVF-13, AVF- <br />14, and AVF-15 are provided in Tables 36, 37, and 38, respectively. Figures 42 through 47 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-14 during 2004. Wells AVF-13, <br />AVF-14, and AVF-IS indicated a significant increase in dissolved iron concentrations. Higher concenvations of <br />iron a[ AVF-14 and AVF-15 may be related in part to subsidence ponding in the area of AVF-14 (See upcoming <br />discussion of related surface sites SW -]3 through SW-15, and discussion under Section -Subsidence). Due <br />to the limited period in which these wells have been established, the data base will need to be expanded before <br />these new maximum values can be evaluated. TCC will continue to monitor this anomaly. <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 48. The furthest downgradient Fish Creek alluvia] monitoring well is 008-AW-3 (Figure <br />50) located near the Fish Creek Tipple. No unusual water level fluctuations were noted at any of these sites <br />during 2004. Similarly, 2004 conductivity values for these two sites were within historical ranges (Figures 49 <br />and 51, respectively). <br />No new minimum or maximum values were recorded at well 006-AY-1 (Table 27) in 2003. At well 006-AZ-3 <br />(Table 28), a new maximum value was recorded for dissolved manganese. Well 006-AW-2 (Table 29) was <br />deactivated and subsequently abandoned in 2004. At well 008-AU-3 (Table 30) a new minimum value was <br />• recorded for lab conductivity. A[ well 008-AW-3 (Table 31) no new minimum or maximum values were <br />recorded. Other monitored water quality parameters returned values at the Fish Creek alluvia] wells typically <br />within previously established ranges. <br />Trout Creek Alluvial Groundwater: During 2004, 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 additions] well (Jones well) required monitoring for water levels and field parameters on <br />a quarterly basis, and water quality sampling for full suite paaameters on an annual basis and sulfate on a annual <br />quarterly basis. All monitoring requirements were met at these sites. Table 35 provides a summary of the 2004 <br />Water Year data collected. Figures 52 through 55 provide graphical representations of water level and field <br />conductivity information to date. Table 32 provides the 2004 data for this well. <br />Well 008-AT-1 is monitored in conjunction with surface water site 1005. Figure 52 depicts the water level <br />relationship between these two sites. Monitoring was initiated on Trout Creek Alluvia] wells back in 1994. <br />Middle Creek Alluvial Groundwater: Two Middle Creek alluvia] wells (AVM-1 and AVM-2) were <br />incorporated into the monitoring network during 1996. Both had required monthly monitoring of water levels <br />and field paaameters with quarterly water quality sampling. However, per TR03-42, these wells were abandoned <br />in the Fall of 2003. Consult previous AHRs for this data. Tables 34 and 35 provide 2004 Water Yeaz data <br />collected at each site. Tables 34A and 35A provide period of record statistical summaries of collected data ai <br />each site. Figures 70 through 73 provide graphical representations of water levels and selected water quality <br />parameters recorded at each site. <br />9 <br />