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Table A2. Continued. <br />Parameter <br />Total Dissolved <br />Solids <br />Total Organic Carbon <br />Turbidity <br />Zinc <br />Unit <br />Method <br />1974 <br />EPA <br />Methods <br />Page No. <br />14th Ed. <br />Standard <br />Methods <br />Page No. <br />mg/1 Glass fiber filtration, 180oC 266 92 <br />mg/1 Combustion - infrared 236 532 <br />NTU Nephelometric 295 132 <br />mg/1 Digestion followed by atomic absorption 155 148 <br /> or colorimetric --- 265 <br />• • <br />,.. <br />rn <br />