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As defined by the Air
Toxics “Hot Spots” Information and Assessment Act, health risk assessment (HRA)
is a detailed comprehensive analysis to evaluate and predict the dispersion
of hazardous substances in the environment and the potential for exposure of
human populations and to assess and quantify both the individual and
population-wide health risks associated with those levels of exposure. Both
the AQMD and the state Office of Environmental Health Hazard Assessment (OEHHA)
review HRAs submitted by facilities per the requirements of the Act.
Risk assessment guidance from OEHHA and the AQMD is provided in links below.
For more information
about the following:
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