The Final Report presents ranking scores for select RCRA wastes that are likely to be emitted to the ambient air based on: (1) hazardous waste characterization data (expected constituent concentrations); (2) idealized gas phase equilibrium concentration; (3) health effects properties (toxicity and carcinogenicity); and (4) estimated waste volumes disposed by treatment, storage and disposal facility (TSDF) type. The RCRA Part A permit application data base was manipulated to generate a list of wastes handled by TSDFs in the United States. This list of 501 wastes comprises an estimated hazardous waste disposal volume of approximately 92 million metric tons nationwide. Approximately 100 of the 501 waste types were evaluated with respect to the four parameters influencing air releases described above. These 100 wastes were then assigned ranking scores according to the methodology presented in this report. The ranking scheme reported here provides a starting point for the selection of wastes that may have the greatest potential for adversely affecting human health due to air releases. Using this ranking scheme, specific wastes will be selected for further study of air emission release rates, dispersion modeling, and field measurements for validation of release rate models.

Distributed to depository libraries in microfiche. "February 1985." "EPA/450-3-85-006." Includes bibliographical references (pages 88-89). Contract Number: 68-02-3168.