Laserfiche WebLink
previous years for well 001-5-5, appears to have stabilized, beginning in 2000 and continuing through 2003. <br />Field conductivity measurements at wells 008-AV-1 and 008-AV-2 are comparable and occurred within <br />previously established ranges for these sites. <br />A new minimum value for lab conductivity was recorded at well009-5-10 (Table 21) in 2003. A[ well 001-S-5 <br />(Table 22) a new maximum value for sulfate was recorded. At well 008-AV-2 (Table 23) a new maximum value <br />for potentially dissolved iron was recorded. This value may be an anomaly. Other parameters appeared to be <br />within historic values. The laboratory indicated the sample had been disposed of and could not be reanalyzed. <br />This anomaly will be monitored during the upcoming sampling in 2004. Wel] 008-AV-1 (Table 24) indicated an <br />new minimum for field conductivity. <br />Wells FO-1 and FO-4 were situated on Foidel Creek approximately overlying the gateroads between the 8 Rt and <br />9 Rt longwall panels in the EMD. Typical seasonal fluctuations in water levels have been seen at these sites. <br />Tables 25 and 26 provide water data for the 2003 water year. Wells FO-1 and FO-4 were abandoned in the fall of <br />2003, per TR03-42. <br />Fish Creek Alluvial Groundwater: During 2003 five Fish Creek alluvial wells (006-AY-1, 006-AZ-3, 006- <br />AW-2, 008-AU-3 and 008-AW-3) required monitoring for water levels and field parameters on a monthly basis, <br />and water quality sampling on a quarterly basis. Per TR03-42, field monitoring requirements were reduced to a <br />quarterly basis, and water quality sampling to semi-annual. All sampling requirements for Fish Creek Alluvial <br />• wells were met. Tables 27 through 31 provide summaries of the 2003 Water Year data collected at each site. <br />Tables 27a through 31a provide POR statistical summaries of collected data at each site. Tables 27b through 31b <br />provide POR statistical summaries of water level data at each site. Figures 38 through 51 provide graphical <br />representations of water levels and selected water quality parameters recorded at 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-15 (installed June 2002) were added per PR99-O5, 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 2003. The <br />maximum fluctuation in water level at this site over the period of record is 7.5' to date. POR conductivity data <br />has been relatively consistent the last several years (Figure 39). Well 006-AZ-3 is situated downstream of 006- <br />AY-1 and below the 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 40. Again in 2003, 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 41). <br />Downstream of 006-AZ-3 are new alluvial wells, AVF-13, AVF-14, and AVF-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 />9 <br />