ABSTRACT
The U.S. Environmental Protection Agency’s Office of Toxic Substances (OTS) maintains a unique capability for estimating exposure of the general United States population to toxic organic chemicals. The National Human Adipose Tissue Survey (NHATS) is the main operative program of the National Human Monitoring Program (NHMP), which is an ongoing chemical monitoring network designed to fulfill the human monitoring mandates of the Toxic Substances Control Act (TSCA). The NHMP was first established by the U.S. Public Health Service in 1967, and was transferred to EPA in 1970. In 1979 the program was transferred within EPA to the Exposure Evaluation Division of OTS.
