Laserfiche WebLink
aquifer. The pH values from backfill well GD -3 are 6.5 and 6.4 for 2012, which is near the values in <br />the native aquifer at well GD -2. <br />Similar pH values were observed for the HI aquifer at well GF-4 in 2012 to those observed in <br />previous years. Backfill well GF -5 had field pH values above 7.0 in 2012, while the field pH for <br />backfill well GF -7 was near neutral. The field pH values in backfill well GF -11 for 2012 were also <br />near neutral and similar to previous years. The field pH in well GF -6 (QR) was also above neutral in <br />2012. <br />Well GP -2 (KLM) water was slightly above neutral in 2012. The field pH values for well <br />GP -3 were higher than neutral from the HI aquifer and from well GP-4 above neutral for the KLM <br />aquifer. <br />Well GP -5 is completed in the QR aquifer. The field pH values from well GP -5 are generally <br />above 8. <br />The 2012 field pH values for HE aquifer well GP -7 were near neutral, while well GP -8 <br />(KLM) water had field pH values near 8.0 in 2012. The 3rd White Sandstone aquifer well GP -9 <br />field pH values are typically near neutral. <br />The alluvial (P -1) and 3rd White Sandstone (P -8) wells in Pyeatt Gulch all contain water <br />with field pH that is generally near neutral. The field pH values for well GMP -1 were near neutral in <br />2012. The 2012 monitoring did not detect any indication of development of acidic water in the <br />Trapper Mine ground water. <br />3.4 NH AND NO <br />Concentrations of ammonia and nitrate are presented in Appendix B, starting on page B -214. <br />In general, concentrations of ammonia vary significantly from year to year. Wells GD -2, GF-4, GF- <br />Trapper Mining Company 3 -8 <br />2012 Annual Report <br />