Laserfiche WebLink
• values from well GP-8 have varied from 7.5 to 29. The average SAR from well GP-9 is <br />approximately 2.5. <br />The SAR values from the Pyeatt wells have generally been between 1 and 3. <br />The SAR values from alluvial wells J-1 and COY were 1.4 and 1.8, respectively, for 1997. <br />Values between 4.7 and 6.7 represent the ranges of SAR from well GLUX-1 <br />water. Water from well 81-03A had an SAR value of 70 in 1997. Well GMP-1 had a value <br />of 13 in 1997, very similar to the values observed during previous years from this well. <br />A SAR of greater than 15 will result in an alkali build-up on most soils and, <br />therefore, will not be an acceptable irrigation source. Some ground water naturally has a <br />high SAR. Ground water systems at Trapper mine do not yield an adequate rate for <br />irrigation and, therefore, are not very likely to be considered as a potential source. <br />• <br />3.5 NH3 AND NO3 <br />Concentrations of ammonia and nitrate are presented in Appendix B, starting on <br />page B-176. In general, concentrations of ammonia vary significantly from year to year. <br />Wells GD-2, GD-3, GE-1, GE-2, GF-1, GF-3, GF-5, GF-6, GF-11, 81-03A, GLUX-1, GP-2, <br />GP-3, GP-5, GP-6, GP-8, GP-9 and P-5 all contained NH3 concentrations that are greater <br />than 1.0 mg/I in 1997. Several of these wells are located away from mining and contain <br />natural levels of NH3 concentrations. All of the NH3 concentrations observed in 1997 are <br />within the natural range of this constituent at Trapper Mine. <br />C~ <br />3-11 <br />