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high outlier. TDS concentrations for two of the eastern KLM wells, GP-2 and GP-8, are also <br />shown on this figure with concentrations generally between 700 and 800 mg/I. These wells <br />are not showing a consistent trend with time but may be showing variations due to <br />variations in recharge water. <br />Figures B-5 and B-6 present the TDS concentrations versus time for the HI <br />aquifer wells. The TDS concentrations in HI well GB-5 have been fairly erratic and do not <br />show a consistent trend. The TDS in HI aquifer wells GE-2 and GF-4 has gradually <br />increased in concentrations during the last ten years. The small increases are well within <br />natural fluctuations in this aquifer. 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 concentrations for the last two years <br />showing a large decline. Additional monitoring is needed to determine whether this backfill <br />aquifer's TDS will continue to decline to a value similar to the HI aquifer TDS in this area. <br />Wells GMP-1 and GP-3 are two HI aquifer wells north of the A pit. A significant increasing <br />trend in TDS had been observed over the last several years in well GMP-1 but the latest <br />value shows a large decline in concentrations. This well is immediately downgradient of the <br />reclaimed A pit. TDS concentrations in HI aquifer well GP-3, further downgradient, in 1997 <br />consist of one high outlier value and one slightly lower. TDS concentrations in eastern wells <br />have varied. The concentrations observed in HI well GC-1 show that the data from well <br />GMP-1 are still within natural concentrations for this aquifer. Fluctuations observed in wells <br />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 />3-3 <br />