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TDS at site S-3 ranges between 286 and 2080 mg/1. The concentrations of TDS plotted <br />versus discharge for S-1 and S-3 indicate the expected negative relationship though <br />there is plenty of scatter (see Figures 2.7-18g and 2.7-18h). <br />TDS exceeds the secondary drinking water limits of 500 mg/1 in all but one <br />sample. The iron limit of .3 mg/1 for drinking water is exceeded at both sites S-1 <br />and S-3 in many of the samples. Irrigation standards are also exceeded for iron <br />(sites S-1 and S-3) in a number of samples. <br />Continued sampling during operation (see Section 4.8) has shown that water in <br />tributaries draining the mine site is unsuitable for use as drinking water under <br />primary and secondary standards. Irrigation standards for continuously used water <br />are typically exceeded for molybdenum, iron and occasionally manganese and lithium. <br /> <br />2-451 s fftElfISED FEB l 3 '87 <br />