Cover. "This document is a preliminary draft. It has not been formally released by EPA..."--Cover. "March 12, 1976"--Cover. "As a result of the initial task force report and research findings, the Office of Air and Waste Management performed an analysis of the possible problems associate with atmospheric nitrosamines. This report presents the result of that analysis and discusses the appropriateness of Federal Regulatory action for the control of nitrosamines. It describes available information on the technical aspects, including health effects, ambient air concentrations, sources and atmospheric chemistry, and control techniques and costs. Finally, the implications of current knowledge on control programs are discussed, important information gaps are summarized, and current EPA research plans are outlined"--P. iii-iv. Includes bibliographic references (p. 42-44) "26864."