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Wells GMP -1 and GP -3 are two HI aquifer wells north of the A pit and are shown on Figure <br />B-5. Higher values of TDS were observed in well GMP -1 during 2006 through 2016. This well is <br />immediately downgradient of the reclaimed A pit and is likely showing fluctuations from the backfill <br />aquifer. The previous TDS values and fluctuations in well GMP -1 are similar to those in well GC -1, <br />which had to be natural until mining reached this area the last few years. The recent higher TDS <br />values in well GMP -1 are likely caused by the upgradient mining. A gradual rise in the backfill <br />water level in this area occurred through 2011 but has recently been fairly steady. The overall TDS <br />concentrations in well GC -1 in 2016 are similar to values that existed prior to mining in this area. <br />The 2006 through 2009 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. The TDS in the new HI aquifer well in the northeast corner of the <br />Trapper permit area has a higher concentration than other HI wells in this area. The flow in the HI <br />aquifer to well GLEV-3 would be from the southeast to the northwest and therefore concentrations in <br />well GLEV-3 should be natural. <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 2016 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 />Trapper Mining Company 3-3 <br />2016 Annual Report <br />