Western Research Institute completed air emissions sampling from four test burns during October 1988 using an Environmental Industrial Technology Incinerator. The tests included burning (I) wood and cardboard, (II) hay and leaves, (III) automobile tires, and (IV) mixed municipal wastes including plastics. Particulate emissions varied between 5.2 x 10-5 to 2.5 x 10-4 grains/dry standard cubic feet corrected to a l2% CO2 basis (0.068 to 0.l66 lb/hr). Almost all NOx emissions were less than 100 parts per million. Carbon monoxide emissions were between 20 and 40 parts per million. The incinerator ash passed the Toxicity Characteristic Leaching Procedure tests for metals, volatiles, and semi volatile compounds. Some benzene, toluene, and phenols were detected in the flue gas and incinerator ash leachate from test burn IV (mixed municipal waste and plastic), a problem which can be corrected by increasing burn temperatures.