This paper discusses testing of the EPA Mobile Incineration system developed through the Office of Research and Development for the purpose of destroying hazardous materials on site. The test program (Trial Burn) consisted of a series of five tests that were designed to evaluate the system's ability to destroy selected hazardous organic materials and to control emissions of HCl, particulate matter, and organics in accordance with the requirements of the TSCA, RCRA, and the New Jersey State Department of Environmental Protection. Discussed herein are: (1) the trial burn plan including the sampling and analytical program, (2) the results of the tests, and (3) the impact of the test program on the local environment. The function of the Mobile Incineration System is to demonstrate the ability of on-site thermal destruction of hazardous materials at remote spill or disposal sites. Since treatment of hazardous materials is controlled by state and federal regulations, a Trial Burn Plan was developed to comply with these regulations and establish the performance capability of the system in destroying/destoxifying hazardous and toxic substances.