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TABLE 13 <br /> Oliver Mine it ate r Quality <br /> (8 samples from 1919 to 1982) <br /> Stream Standard Maximum Conc. Exceedances <br /> (North Fork Gunnison) (mg/1) Date Conc. <br />Constituent (mg/1) (mg/1) <br />Boron 0.75 1.02 6/30/79 1.02 <br /> 10/6/81 1.00 <br /> 6/13/82 1.00 <br />Nitrate 10.00 0.675 <br />Chloride 250.00 18.80 <br />Sulfate 250.00 75.00 <br />Iron (disc) 0.03 0.245 <br />Iron (tot) 1.00 2.34 10/12/82 2.34 <br />Manganese (tot) 1.00 0.076 <br />Selenium 0.01 0.017 10/12/82 0.017 <br />Zinc 0.05 0.05 10/12/82 0.05 <br />42A <br />