Laserfiche WebLink
11. The SAR values observed in 2017 in water in the Trapper wells were very similar to recently <br />observed and natural values at Trapper Mine. None of the 2017 SAR values indicate a significant <br />trend in this parameter. <br />The heavy metals with a "t" subscript by their symbol represent total measurements, while <br />the others are dissolved concentrations. The "tr" subscript for iron indicates total recoverable iron. <br />Dissolved and total concentrations are similar for most of the heavy metals, except for iron <br />concentrations in some wells where the total values are significantly greater. <br />Iron concentrations have varied over large ranges near the mine pits and at distant wells but <br />no consistent trends have been observed. Levels of aluminum, barium, boron, phosphate and <br />manganese have also varied over significant ranges but no consistent trends have been observed. <br />Arsenic, cadmium, chromium, copper and lead concentrations have been low with a few exceptions. <br />Molybdenum, nickel and selenium concentrations have stayed low. The recent radium 226 values <br />have been low and the 2017 value for well GF -6 shows that the 2016 value of 5.5 pCi/1 was an <br />outlier. The variability of laboratory analysis is greater for this parameter and the 2016 elevated <br />value should not be given any significance. <br />3.6 SPRING AND SEEP WATER QUALITY <br />Table B-2 in Appendix B on pages B-65 through B-73 presents the 2008-2017 water -quality <br />data for the springs and seeps at the Trapper Mine. The locations of the springs and seeps that were <br />monitored in 2017 are shown on Maps 2-1, 2-2 and 2-3. Flow from the springs and seeps are shown <br />on Table B-2, which shows that only the East Pyeatt spring exceeded 5 gpm in its discharge rate in <br />2017. Water quality from the springs and seeps are similar to the ground -water quality for the site. <br />An increase in TDS concentrations was observed in the East Pyeatt Spring in 2000 with fairly <br />Trapper Mining Company 3-10 <br />2017 Annual Report <br />