We've made some changes to EPA.gov. If the information you are looking for is not here, you may be able to find it on the EPA Web Archive or the January 19, 2017 Web Snapshot.

EPA ExpoBox

Exposure Assessment Tools by Media

Exposure assessment is one of the four major steps in risk assessment; others include hazard identification, dose-response assessment, and risk characterization. Exposure assessment is “the process of estimating or measuring the magnitude, frequency, and duration of exposure to an agent, along with the number and characteristics of the population exposed. Ideally, it describes the sources, routes, pathways, and uncertainty in the assessment” (see IPCS, 2004 Glossary of Key Exposure Assessment Terminology (PDF) (122 pp, 951 K, About PDF Exit developed by the International Programme on Chemical Safety).

Exposure may be estimated for any of the various exposure media: air, water and sediment, soil and dust, food, aquatic biota, or consumer products. Alternatively, exposure assessments may be categorized according to exposure assessment approaches, exposure route, assessment tiers and types, lifestages and populations, or chemical classes.

Top of Page