TITLE Field Test of a Generic Method for the Sampling and Analysis of Halogenated Hydrocarbons Listed in Title III of the Clean Air Act Amendments of 1990 AUTHOR(S) James F. McGaughey, Joan T. Bursey, Joann Rice, and Raymond Merrill, Radian Corporation, and Merrill D. Jackson, EPA PERFORMING ORGANIZATION NAME AND ADDRESS Radian Corporation P. O. Box 13000 Research Triangle Park, North Carolina 27709 SPONSORING AGENCY NAME AND ADDRESS U. S. Environmental Protection Agency SMRB, MRDD, AREAL, ORD Research Triangle Park, North Carolina 27709 ABSTRACT To validate a new source test method for EPA use, the performance of the sampling and analytical methodology for the chemicals of interest must be established and demonstrated through field tests at sources similar to those of interest. Validation studies for measuring volatile and semi-volatile halogenated organics were undertaken in two different studies. Repeated sampling runs of the Volatile Organic Sample Train (VOST; SW-846 Sampling Method 0030 with Analytical Method 5041) and Semi-Volatile Organic Sample train (Semi-VOST; SW-846 Method 0010 with Analytical Method 8270) were collected at two source locations. Quadruple sampling trains were used in each run, with two of the trains being spike with standards. For the VOST method, the results of the two field studies were consistent with laboratory tests. For the Semi- VOST method, consistent results were obtained in the laboratory study and one of the field tests. At the second field site, the Semi-VOST data were inadequate because of problems encountered in the preparation of the samples for analysis.