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~- <br />SAR values for wells GP1 and GP2 are approximately 11 and 5 on the average. SAR <br />values for well GP3 aze less than 2, while values from well GP4 have shown a very wide range from <br />32 to 177. <br />Well GPS has had SAR values from 22 to 74. SAR values for well GP6 have been below <br />4 for the last seven years. The SAR values from well GP7 are below 1, while the values from welt <br />GP8 have varied from 7.5 to 29. The average SAR from well GP9 is approximately 2.5. <br />The SAR values from the Pyeatt wells have generally been between 1 and 3. The SAR <br />values from alluvial wells J1 and COY have been approximately 1 and 1.5, respectively. <br />Values between 3.0 and 6.7 represent the ranges of SAR from well GLLJX-1 water. Water <br />from well 81-03a had an SAR value of 84 in 1994, a large decrease from 1993. Well GMP-1 had <br />a value of 4.7 in 1994, down from 8.9 in 1993. <br />• A SAR of greater than 15 will result in an alkali build-up on most soils and, therefore, <br />will not be an acceptable irrigation source. Some ground water naturally has a high SAR. Ground <br />water systems at Trapper mine do not yield an adequate rate for irrigation and, therefore, are not <br />very likely to be considered as a potential source. <br />3.5 NH, AND NO, <br />Concentrations of ammonia and nitrate are presented in Appendix B, pages B-125 to B- <br />146. In general, concentrations of ammonia decreased in 1994, however, concentrations of nitrate <br />generally increased in 1994 to values ranging from 0.12 to 3.4 mg/l. Wells GE1, GF2, GF3, GP1, <br />GP2, and GP9 all demonstrated NH, concentrations that are less than the detection limit of 0.05 <br />mg/I. The decline of the small NH, values in these wells to below detection needs additional <br />analysis for confumation. A signi5cant increase in the NH3 concentration occurred in well GE2 in <br />3-11 <br />