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concentrations with time but have been fairly steady for the last three years. The small changes are <br />well within natural fluctuations in these two wells but could be due to upgradient mining. TDS <br />concentration in backfill well GF -5 is slightly greater but is still well within the natural range for the <br />111 aquifer. Significantly higher TDS values have been observed in backfill well GF -7 with the <br />concentrations in the last nine years being between the lower levels prior to this period and the <br />maximum historical values from this well. One of the two values in 2006 for TDS was lower while <br />the other value was very similar to recent concentrations. TDS values in this backfill aquifer will <br />likely fluctuate until they decline to a value similar to the HI aquifer in this area. <br />Wells GMP -1 and GP -3 are two HI aquifer wells north of the A pit. A lower value in TDS <br />was observed in well GMP -1 during the first half of 2006 with a large increase in the second value. <br />This well is immediately downgradient of the reclaimed A pit and is likely showing fluctuations <br />from the backfill aquifer. The TDS values and fluctuations in well GMP -1 are similar to those in <br />well GC -1, which had to be natural until mining reached this area the last few years. The overall <br />TDS concentrations in well GC -1 had declined for the last few years and the 2006 values show <br />similar levels. The 2006 monitoring indicates the 2005 increases were not representative of large <br />portions of the aquifer in this area. TDS concentrations in HI aquifer well GP -3, further <br />downgradient of well GMP -1, have overall been steady for the period of observation. TDS <br />concentrations in eastern wells have varied, showing that TDS varies naturally over a large range in <br />this aquifer. Fluctuations observed in wells GC -1 and GP -7 except for the last few years must be <br />natural due to their location. <br />Figure B -6 presents the TDS for 3rd White Sandstone wells GC -2, GP -9, P -8 and 81 -03A. <br />Concentrations in each of these wells have been fairly steady for the last few years. The TDS for <br />Trapper Mining Company <br />2006 Annual Report <br />3 -3 <br />