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• • • <br />~ = 4 /6/81 TDS = 424 <br />0 = 8/18/81 TDS = 208 <br />CATIONS <br />60 <br />:j <br />so <br />*~ <br />b0 <br />m ~~ <br />\ y. meq/I ~ <br />~ n <br />0 <br />O <br />t <br />eo <br />ANIONS <br />60 <br />°o <br />\, <br />,0 <br />FIGURE 6 -o <br />7WEN' <br />Ca CI <br />