1. Technical documentation about the vinyl chloride case is included in: “Preliminary Assessment of the Environmental Problems Associated with Vinyl Chloride and Polyvinyl Chloride (with Appendices),” EPA, September 1974.
2. A good discussion of the pervasiveness of PCBs in the mid-1970s is included in Maugh, Thomas H., “Chemical Pollutants: Polychlorinated Biphenyls Still a Threat,” Science, December 19, 1975, page 1189.
3. For a recent discussion of chemical carcinogens, see “Special Report: A Brief Review of Chemical Carcinogenesis,” The Texas Institute for Advancement of Chemical Technology, Special Report 1, 1989, College Station, Texas.
4. “Water Program: Benzidine; Proposed Toxic Pollutant Effluent Standards,” Federal Register, Part V, June 30, 1976. This notice reviews development of the quantitative standard after it was first proposed in the Federal Register on December 27, 1973.
5. “Auto Pollution Health Costs Calculated,” Washington Post, January 21, 1990, page A12.