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• years after an overall declining trend. TDS concentrations for two of the eastern KLM <br /> wells, GP-2 and GP-8, are also shown on this figure with concentrations generally between <br /> 700 and 800 mg/l. A gradual declining trend during the last four years has also been <br /> observed in these two wells. <br /> Figures B-5 and B-6 present the TDS concentrations versus time for the HI aquifer <br /> wells. The TDS concentrations in HI well GB-5 have been low and steady for the last two <br /> years. The TDS in HI aquifer wells GE-2 and GF-4 has gradually increased in <br /> concentrations during the last twelve years. The small increases are well within natural <br /> fluctuations in this aquifer. TDS concentration in backfill well GF-5 is slightly greater but is <br /> still well within the natural range for the HI aquifer. Significantly higher TDS values have <br /> been observed in backfill well GF-7 with the concentrations in 1998 and 1999 being <br /> between the lower levels in the previous two years and the maximum historical values <br /> from this well. TDS values in this backfill aquifer will likely fluctuate until they decline to a <br /> value similar to the HI aquifer in this area. Wells GMP-1 and GP-3 are two HI aquifer wells <br /> north of the A pit. An overall decreasing trend in TDS was observed in 1999 in well GMP-1 <br /> to the previous few years. This well is immediately downgradient of the reclaimed A pit <br /> and is likely showing fluctuations from the backfill aquifer. The TDS values and fluctuations <br /> in well GMP-1 are similar to those in well GC-1, which have to be natural. TDS <br /> concentrations in HI aquifer well GP-3 in 1998, further downgradient, consist of values <br /> similar to it's historical average. TDS concentrations in eastern wells have varied, showing <br /> that TDS varies naturally over a large range in this aquifer. Fluctuations observed in wells <br /> GC-1 and GP-7 must be natural due to their location. <br /> • <br /> 3-3 <br />