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• than 10 feet. The limited extent of the Foidel Creek alluvial deposits, and the lack of base flow in the creek <br />indicates that these deposits are relatively insignificant to the area ground water hydrologic system. <br />Alluvial deposits containing groundwater are monirored in [he Foidel Creek, Fish Creek, Trout Creek and Middle <br />Creek drainages. In the Foidel Creek drainage, sites both upstream and downstream of the TCC portals and <br />support facilities are monitored. In the Fish Creek Drainage, sites upstream and downstream of the Mine 2 area <br />and [he Fish Creek Borehole mine dewatering facilities are monitored. <br />Foidel Creek Alluvial Groundwater: During 2005, four Foidel Creek alluvial wells, 009-5-10, 001-5-5, 008- <br />AV-1, and 008-AV-2 require monitoring on a quarterly basis, and water quality sampling (with exception of 008- <br />AV 1) on asemi-annual basis. All monitoring requirements were met at these sites. Tables 19 through 22 provide <br />summaries of the 2004 Water Year data collected at each site. Tables 19a through 22a provide historical <br />statistical summaries of collected data at each site through 2003. Tables 196 through 22b provide period of record <br />water level summaries for each site. Figures 29 through 33 provide graphical representations of water levels and <br />selected water quality parameters recorded at these sites. <br />Water levels during 2005 remained generally consistent with established ranges and patterns and showed the <br />typical seasonal variability of elevated water levels in the spring. Well 009-S-IO provides data for the alluvial <br />aquifer upgradient from the mine portals. Water levels in 009-5-10 for 2005 (Figure 29) are consistent with <br />observed historical seasonal fluctuations. Conductivity values at well 009-5-10 (Figure 30) remain consistent <br />• with historical values. <br />Well 001-S-5 is located just downgradient from the mine portals and surface facilities location, and is monitored <br />in conjunction with surface water monitoring site 8. Water levels in 001-S-5 for 2003 (Figure 31) are consistent <br />with observed historical seasonal fluctuations. Conductivity values at well 001-5-5 (Figure 32) had exhibited a <br />general increase since 1979, but appears [o have leveled out since 2000. Figure 33 is indicative of the genera] <br />relationship between the alluvial groundwater elevations and surface water elevations a[ these two sites. <br />Data for wells 008-AV-1 and 008-AV-2 are provided in Tables 21 and 22, respectively. 2005 data was consistent <br />with historical values. Water levels in these wells and the stream show the typical seasonal interrelationship of <br />relatively rapid increases and declines associated with spring runoff . The longer-term trends in water levels ai <br />these sites generally parallel the fluctuations observed in annual stream flows. <br />Field conductivity measurements in general at we]] 001-5-5 were noted to be higher than the upgradient site 009- <br />S-10, although concentrations dropped slightly in 2005. Downgradient, field conductivities at well 008-AV-2 <br />was on the order of 1700. Conductivity values at well 009-S-10 fluctuated within previously established ranges <br />during 2005. There appears to be a continual increasing field conductivity trend for well 001-5-5. Field <br />conductivity measurements at wells 008-AV-1 and 008-AV-2 are comparable and occurred within previously <br />established ranges for these sites. <br />Fish Creek Alluvial Groundwater: During 2004 four Fish Creek alluvial wells (006-AY-1, 006-AZ-3, 008- <br />AU-3 and 008-AW-3) required monitoring for water levels and field parameters on a quarterly basis, and water <br />7 <br />