1986-12-31_REPORT - C1981008 (3)

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Table 5 ACZ, Inc./Bookcliffs Laboratory Division Water Analysis Holding Times Maximum Storage Parameter Container Preservation Regulatory* Acidity Plastic/Glass Refrigeration 14 days Alkalinity Plastic/Glass Refrigeration 14 days BOD Plastic/Glass Refrigeration 48 hours Boron Plastic None Required 28 days Bromide Plastic/Glass None Required 28 days COD Plastic/Glass Add H SO to pH 2 28 days Coliforms Plastic (sterile) Refrigeration 24 hours Chlorophyll Plastic/Glass 30 days in dark: 30 days freeze Chromium VI Plastic/Glass Refrigeration 24 hours Color Plastic/Glass Refrigeration 48 hours Conductivity Plastic/Glass Refrigeration 28 days Cyanide, Total Plastic/Glass Add NaOH to pH 12, 14 days Refrigeration Fluoride Plastic/Glass None Required 28 days Hardness Plastic/Glass Add HNO to pH 2 6 months Metals, General Plastic/Glass Add HNO3 to pH 2 6 months Mercury Plastic/Glass Add HNO3 to pH 2, 28 days Refrigeration Nitrogen, Ammonia Plastic/Glass Add H SO to pH 2, 28 days Refrigeration Nitrogen, NO /NO Plastic/Glass Refrigeration 28 days Nitrogen, Niiriti Plastic/Glass Refrigeration 48 hours Nitrogen, Total Plastic/Glass Add H SO to pH 2, 28 days Refrigeration Oil and Grease Glass Add H SO to pH 2, 28 days Refrigeration Organic Carbon Glass Add H SO to pH 2, 28 days Refrigeration Phenols Glass Add H SO to pH 2, 28 days Refrigeration pH Plastic/Glass Analyze Immediately N/A Phosphate Plastic/Glass Filter, 48 hours Refrigeration Phosphate, Total Plastic/Glass H SO to pH 2, 28 days R;frigeration Solids, Dissolved Plastic/Glass Refrigeration 7 days Solids, Suspended Plastic/Glass Refrigeration 7 days Solids, Settleable Plastic/Glass Refrigeration 48 hours Silica Plastic Refrigeration 28 days Sulfate Plastic/Glass Refrigeration 28 days Sulfide Plastic/Glass NaOH to pH 9, 7 days Zinc Acetate Turbidity Plastic/Glass Refrigeration (dark) 48 hours *Environmental Protection Agency, Proposed Rules, Federal Register, Vol . 49, No. 209, Oct. 26, 1984. 14