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2007 AHR McClane & Munger Canyon Mines .Page 6 <br />The mines will not have a detrimental impact upon the groundwater of the East Salt <br />Creek Valley. This is based partially on the relative sizes of the operation and the size <br />of the aquifer. It is also based on the fact that the groundwater contained in the alluvium <br />is substandard. East Salt Creek is an accurate name. The water contained in the <br />alluvium is virtually unusable. Field water sampling has shown that the conductivity of <br />the groundwater is extremely high (3,000 to 100,000). <br />Data gathered for SW-1 and GW-3 are presented in the Tables N-1 through N-7 in <br />Appendix N. The Division's 1987 Material Damage guidelines require any measured <br />salinity values over 1,000 umhos/cm be reported as `suspect' values. Since baseline <br />values for SW-1 and GW-3 far exceed the Division's `suspect' levels, the Operator <br />compiled data in order to demonstrate mine discharge does not add salinity to the <br />already high values, rather, lowers the salinity in SW-1 and GW-3 during the irrigation <br />season. By improving the salinity of the waters in East Salt Creek and the East Salt <br />Creek alluvium, downstream farmers will not suffer loss of production due to the <br />addition of mine discharge. <br />• <br />C~ <br />