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were deactivated. All monitoring requirements were completed at these sites during 2003. 2003 data is presented in Tables 12 through 17. Well FCM#2 was replaced in the fall of 1995 by monitoring well 95M001, with semi-annual monitoring during 2003 occumng at well 95M001 in lieu of FCM #2. Summaries of the Water Year data collected at each site can be found in previous AHRs. Tables 12a through 17a provide the POR statistical summaries of collected data at wells 001-83-106, 001-83-107, 95M001, FBR-2-E, 97012TC and 97013TC, respectively. Tables 12b through 17b provide period of record water level surmaries far each site. Figures 18 through 25 provide graphical representations of water levels and selected water quality parameters recorded at active sites. The pumping of well 001-83-106 (Figure 18) complicates the po[entiome[ric surface in the Trout Creek Sandstone. Water levels in well 001-83-106 continue a slight increase, as seen during the previous four water years. The potentiometric surface trends prevalent in the Twentymile Sandstone and Wadge Overburden aquifers are not evident in the monitored Trout Creek wells. The previously monitored well 006-83-48C routinely exhibited water levels in the 7100 ft elevation range while replacement well FCM#2 exhibited levels around the 6520 ft elevation during 1995. In the fall of 1995, well 95M001 was established in part to address the apparent discrepancy in water levels between wells 006-83-48C and FCM#2. Water levels from well 95M001 confirm that levels recorded from well FCM #2 were accurate (Figure 20). Mining in the northern mining district began in 1995, which is down dip of this well. Water levels in well 95M001 continue to decline since the 1999 water year, which appears to be influenced by the mining operation. • Significant inflows from the Trout Creek Sandstone into [he mine workings have not been encountered to date to account for the apparent lowering of the potentiometric surface in the Trout Creek formation, as indicated by the water level data previously recorded for well 006-83-48C. Some dewatering of the aquifer does occur from the pumping of well001-83-106 to supply the mine with domestic water. During 2003, the southernmost Trout Creek well, 001-83-107 (Figure 19), continued to exhibited lower water levels in the 6830 ft elevation range. Located downdip of the TCC facility water well (001-83-106), steady declines in water level since the early 1990 may reflect effects from longwall mining that began in the western mining district in 1990, in addition to water well use (Figure 21). Well FBR-2-E (Figure 22), located along the eastern permit boundary exhibited consistent water levels until early 1999, then dropped about 50 feet and immediately stabilized with consistent water levels at the lower depth through 2003. The specific reason for this drop is not apparent, although many historical boreholes and some faulting exists in the general vicinity. Water levels were at the 6665 ft elevation during 2003, which is similar to the previous four water years. TDS values for FBR-2-E (Figure 23) dropped in 2001, but have subsequently rebounded back to historical values. The exact reason for this decline is unknown. I Well 97013TC (Figure 24) exhibited a drop in water level in 2003, but appears to be rebounding back to historical levels. Declines observed since the well was installed in 1998 do not appear to be related to mining activities. The earliest date that mining operations intercepted the Trout Creek Aquifer was in August 1999, via a fault running through the NE Mains area. This intercept location is over 16,000 feet to [he south. Declines in 6