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eastern KLM wells, GP-2 and GP-8, are also shown on this figure with concentrations <br />between 700 and 800 mg/I. These wells are not showing a consistent trend with time. <br />Figures B-5 and B-6 present the TDS concentrations versus time for the HI <br />aquifer wells. The TDS in HI aquifer wells GB-5, GE-2 and GF-4 has been fairly steady and <br />contain similar concentrations. TDS concentration in backfill well GF-5 is slightly greater <br />but is still well within the natural range for the HI aquifer. Significantly higher TDS values <br />have been observed in backfill well GF-7 with the latest concentration indicating a large <br />decline, however, additional analysis is needed to confirm this reduction in TDS. Wells <br />GMP-1 and GP-3 are two HI aquifer wells north of the A pit. A significant increasing trend <br />in TDS has been observed over the last several years in well GMP-f. This well is <br />immediately downgradient of the reclaimed A pit. TDS concentrations in the HI aquifer well <br />GP-3, further downgradient, have remained steady with time. TDS concentrations in <br />eastern wells have vaned. The concentrations observed in HI well GC-1 show that the data <br />from well GMP-1 are still within natural concentrations for this aquifer. Fluctuations <br />observed in wells GC-1 and GP-7 must be natural due to their location. <br />Figure B-7 presents the TDS for 3rd White Sandstone wells GB-2, GC-2, GP-9 <br />P-8 and 81-03A. Concentrations in each of these wells have been fairly steady for the last <br />several years with the exception of well P-8. The TDS in well P-8 decreased significantly <br />in both 1991 and 1992 but has steadily increased since the last half of 1995. The increase <br />in well P-8 is above the levels expected for the 3rd White Sandstone but may be natural <br />based on natural concentrations observed in 2nd White Sandstone well P-5. Figure B-8 <br />presents TDS values for 2nd White Sandstone well P-5 and shows that the concentration <br />has been in the 2500 to 3000 mg/I range prior to mining in this area. Natural water-quality <br />3-3 <br />