Since vinyl chloride is a volatile gas, most vinyl chloride released to the environment is eventually transported to the atmosphere; lesser amounts are transported to groundwater. Vinyl chloride has been detected in the ambient air in the vicinity of vinyl chlorideand PVC manufacturing plants and hazardous waste sites (ATSDR, 1997, page 153). Effluents and emissions from vinyl chloride and PVC manufacturers are responsible for most of the vinyl chloride released to the environment. (ATSDR, 1997, page 153).
Vinyl chloride is classified as a human carcinogen by the United States Environmental Protection Agency (USEPA, 2002), by the International Agency for Research on Cancer (IARC, 1979;1987), by the National Institutes of Occupational Safety and Health (NIOSH, 1997), by the America



