3k. Risk and Exposure Assessment
http://www-apps.niehs.nih.gov/sbrp/eag/web/3k.html
Risk assessment is a structured methodology that is used to evaluate the possible effects of Superfund sites on human health and ecosystem health. The USEPA uses this process both to view the extent of a problem at a Superfund site and to inform decision-makers from the pre-remedial through the post-remedial phases of a Superfund site cleanup. An integral component of risk assessment is exposure assessment, which is the process of measuring or estimating exposures to chemical contaminants. The general goal of risk/exposure assessment research is to improve and validate the measurements, modeling, instrumentation and study designs that are used to analyze the health risks and exposure pathways from Superfund sites. Some key areas of research include epidemiological studies that evaluate the relationship between exposure and disease in a population; the development of new risk assessment tools; use of models and biomarkers to measure exposure and effect; and studies elucidating the environmental pathways in which environmental contaminants are transported from the release site to possible points of contact with humans. The advances made in these studies can assist remedial project managers and other decision-makers in protecting the environment and meeting the public health needs of the communities affected by Superfund sites.

Risk Assessment:
Environmental Protection Agency: Superfund and Risk Assessment
International Society for Environmental Epidemiology
Risk Assessment Information System (Oak Ridge National Laboratory)
Society for Risk Analysis
U.S. Department of Agriculture, Office of Risk Assessment and Cost-Benefit Analysis