The guidance document was originally issued in June 1983. Since then significant changes have occurred in the regulations that cover volatile and semivolatile organic air pollutants. There have also been significant advances in the collection and analysis of organic compounds and in the quality and availability of calibration and QC samples for them. The present version of the guidance document has been revised to reflect these changes so that the new information can be readily available to the monitoring community. Because the document covers regulatory issues, sampling and analytical methods, monitoring plan development and quality assurance it will be useful to both governmental and industrial personnel concerned with monitoring the ambient air for organic compounds. It should be useful as an aid for planning and establishing such air monitoring programs, but it should not be used as the sole source for such a program.

Shipping list no.: 90-174-P. "February 1990." Includes bibliographical references (pages 84-89). U.S. Environmental Protection Agency Contract No. Contract Number: 68-02-4556.