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slightly below neutral but similar to previous years. The field pH in well GF-6 (QR) was also <br />above neutral in 2007. <br />Well GP-2 (KLM) water was near neutral in 2007. The field pH values for wells GP-3 and <br />GP-4 were each above neutral from the HI and KLM aquifers, respectively. <br />Well GP-5 is completed in the QR aquifer. The field pH values from well GP-5 are <br />generally above 8. <br />The 2007 field pH values for HI aquifer well GP-7 were near neutral, while well GP-8 <br />(KLM) water had field pH values near 8.0 in 2007. The 3rd White Sandstone aquifer well GP-9 <br />field pH values are typically near neutral. <br />The alluvial (F-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 <br />in 2007. The 2007 monitoring did not detect any indication of development of acidic water in the <br />Trapper Mine ground water. <br />3.4 NH3 AND N03 <br />Concentrations of ammonia and nitrate are presented in Appendix B, starting on page B- <br />196. In general, concentrations of ammonia vary significantly from year to year. Wells GF-5, GF- <br />6, GF-7, GP-7, GP-9 and P-8 all contained NH3 concentrations that are greater than 1.0 mg/1 in <br />2007. Several of these wells are located away from mining and contain natural levels of NH3 <br />concentrations. All of the NH3 concentrations observed in 2007 are within the natural range of this <br />constituent at Trapper Mine. <br />• <br />Trapper Mining Company 3-g <br />2007 Annual Report <br />