TITLE Air Emissions Testing AUTHOR(S) Larry D. Johnson PERFORMING ORGANIZATION NAME AND ADDRESS U.S. Environmental Protection Agency ORD/AREAL/MRDD/SMRB Research Triangle Park, NC 27711 SPONSORING AGENCY NAME AND ADDRESS U.S. Environmental Protection Agency ORD/AREAL/MRDD/SMRB Research Triangle Park, NC 27711 ABSTRACT Air emissions have become increasingly important to regulatory programs, even those traditionally involved with discharges into other media such as water. Multimedia awareness has become mandatory to prevent contamination of one medium during cleanup of another. Although methods for acquisition of samples from smoke stacks, ducts, and ambient air are considerably different from those used in sampling other media, there are many similarities in the procedures used to prepare and analyze them. This paper discusses several of the more common air emissions sampling procedures, and the preparation and analysis steps usually applied to the samples.