Estimate Exposure
Biosafety Science
Estimate Hazard
Estimate Exposure
Risk Assessment and Characterization
Risk Management
Protocols and Procedures
EPA Risk Assessment Review Process

The exposure component of risk assessment is related to the level of hazard. Some activities - such as crossing a street- are more common, individualized, and short lived than others. In some cases the product is highly labile and will not persist in the environment; other products may have a longer lifespan, resulting in greater probability of larger populations coming in contact with the product. These parameters define the exposure factor. Exposure factors are based on how often one engages in the particular activity or comes in contact with a particular product. Central to exposure is identification of the exposed population. The density and makeup (requires breakdown by age, sex) of the population must be determined.

Last Modified: May 23, 2000
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