The total cost associated with this treatment was determined and the unit cost per gallon of oil treated was established. The ambient air quality was monitored during the time of treatment and found not to be hazardous to public health. The liquid waste, because of its high pH, is hazardous under the corrosivity test established by EPA. The TVA test results indicate that the PCBX process effectively removed PCBs to a concentration of 2 ppM or less however, improvement of the oil quality from the untreated to the treated state was not statistically significant. The further treated oil quality was very comparable to the ASTM recommended criteria for new oil. Two of the decontaminated oil samples were further filtered, degassed, and tested in the laboratory. Test results indicate that most of the treated oil qualities were satisfactory in physical and chemical properties however, some of the treated oil qualities were not acceptable in electrical properties in comparison with ASTM and TVA criteria. Three special tests performed include a power-factor valued oxidation test, a sludge-free life test, and a paper aging test. Thirteen (13) ASTM standard tests and three special acceptance tests were more » made on the oil samples to determine physical, chemical, and electrical properties of the treated oil. The PCB-decontaminated oil quality was evaluated to determine its suitability for potential reuse. the treatment was carried out from the oils in storage tanks and in the de-energized transformers. The untreated oils contained PCB concentrations ranging from 51 to 1100 ppM and had a great variety of dielectric properties. Thirty thousand two hundred and ninety (30,290) gallons of transformer oils were processed. This report documents the findings associated with the reclamation of mineral oils containing PCBs by the Sunohio PCBX process, a chemical destruction process for Polychlorinated biphenyls (PCBs). In addition, during the time of treatment, the ambient air quality was monitored and found not to be hazardous to public health. The liquid waste, a by-product of the process, was determined to be hazardous waste in accordance with the EPA proposed hazardous waste regulations. The TVA test results indicated that the the PCBX process effectively removed PCBs to a concentration of 2 ppM or less in addition only two of the treated oil quality parameters, interfacial tension and color, exhibited a statistically significant improvement from the untreated state. The decontaminated oil was evaluated to determine its suitability for reuse in accordance with the ASTM and TVA criteria and the effectiveness of the PCBX process was examined on the basis of PCB concentrations and the selected parameters including color, neutralization number, dielectric strength, power factor, interfacial tension, water content and oxidation stability index. Total cost associated more » with the process was determined. The treatment was carried out from the oils in storage tanks and in the de-energized transformers. The treatment was provided by Sunohio mobile PCBX treatment units in December 1981 at the TVA Power Service Shops, Muscle Shoals, Alabama. This report documents the findings associated with the reclamation of PCB-contaminated transformer oils by the Sunohio PCBX process, a chemical destruction process for Polychlorinated biphenyls (PCBs). Because the contaminant data in the barn swallow hatchlings and nestlings seem to reflect the sediment chemistry nearby the colony, this study suggests that barn swallows are a useful biomonitoring species for this AOC. These data suggest that contaminants in the water and sediment of the GCR/IHC are being incorporated into the vertebrate food chain via aquatic insects.
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