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values in well GNP -1 are likely caused by the upgradient mining. A gradual rise in the backfill water <br />level in this area had occurred the last several years. The overall TDS concentrations in well GC -1 in <br />2014 are similar to values that existed prior to mining in this area. The 2006 through 2009 <br />monitoring indicates the 2005 increases were not representative of large portions of the aquifer in this <br />area. IDS concentrations in HI aquifer well GP -3, further downgradient of well GNP -1, have overall <br />been steady for the period of observation. TDS concentrations in eastern wells have varied, showing <br />that TDS varies naturally over a large range in this aquifer. Fluctuations observed in wells GC -1 and <br />GP -7 except for the last few years must be natural due to their location. <br />Figure B -6 presents the TDS for 3rd White Sandstone wells GC -2, GP -9 and P -8. <br />Concentrations in each of these wells have been fairly steady for the last few years. The TDS for the <br />previous sixteen years for well P -8 shows fairly steady concentrations prior to a large increase in <br />1995 over three years to a value of approximately 4000 mg/l. The 2014 TDS concentrations in well <br />P -8 were steady. The increase in well P -8 is above the levels expected for the 3rd White Sandstone <br />and is likely due to the upgradient mining based on the timing and magnitude of the increase. <br />However, some of this higher level could be natural based on natural large concentrations observed in <br />2nd White Sandstone well P -5. Concentrations are expected to decline in the future if the increase is <br />due to upgradient mining. <br />Figure B -6 also presents TDS values for 2nd White Sandstone well P -5 and shows that the <br />concentration were in the 2500 to 3000 mg/1 range prior to mining in this area and were similar to <br />these values in the most recent samples. Natural water - quality concentrations in the 1st, 2nd and 3rd <br />White Sandstones are expected to vary over a similar range. <br />Trapper Mining Company 3 -3 <br />2014 Annual Report <br />