A series of ten incineration tests were performed on a synthetic hazardous waste containing tetrachloroethylene, toluene, chlorobenzene, and pentachlorobenzene as principal organic hazardous components (POHCs). Sulfur hexafluoride (SF6) was also injected into the mixture just prior to incineration and the resulting destruction removal efficiencies (DRE) were measured. Primary combustion chamber temperature was varied from 871C to 1249C and the oxygen concentration from 1.3 to 9.2 percent. The test data indicated poor correlations between the variables of temperature and oxygen with POHC DRE. A temperature/SF6 DRE linear relationship was observed. The research also indicated that SF6 was more difficult to incinerate than any of the other POHCs, and might represent a lower boundary for evaluating incinerator performance.