TITLE Total Organics Guidance Manual for Stationary Source Emissions AUTHOR(S) Robert F. Martz, Joan T. Bursey, Raymond G. Merrill, Easter A. Coppedge, Larry D. Johnson PERFORMING ORGANIZATION NAME AND ADDRESS Radian Corporation P.O. Box 13000, Research Triangle Park, NC 27709 SPONSORING AGENCY NAME AND ADDRESS National Exposure Research Laboratory Office of Research and Development U.S. Environmental Protection Agency Research Triangle Park, NC 27711 ABSTRACT A guidance manual, prepared under EPA contract, was written to catalogue the methods used to measure and report total organics data from stationary source emissions. Preparers of air quality permit applications for waste combustion units require total organics data for their assessments. The guidance manual identifies specific techniques to determine the total organics sampled from stationary combustion sources. To generate a value for total organics, organics data from three specific boiling point/vapor pressure classes are combined: light hydrocarbons and volatile organics (measured using Field Gas Chromatography and Purge and Trap Gas Chromatography), semivolatile organics (measured using a total chromatographic organics method), and nonvolatile organic compounds (measured using a gravimetric analysis method). The methods for measuring and reporting the individual parameters are discussed in detail in the guidance manual. After a literature search and subsequent laboratory testing, two specific improvements to the methodology were suggested. Gas Chromatography/Mass Spectrophotometry techniques were offered as an alternative to Gas Chromatography/Flame Ionization Detection for total chromatographic organics measurements of semivolatile organics. In addition, the use of smaller, more sampleefficient microgravimetric pans was implemented for nonvolatile gravimetric measurements.