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Air: Fate, Exposure, and Risk Analysis (FERA)

The EPA uses a variety of tools, including the Total Risk Integrated Methodology (TRIM), to evaluate the health risks and environmental effects associated with exposure to "criteria" air pollutants (including photochemical oxidants, such as ozone) and toxic air pollutants. Learn about recent releases including updated files and models.

Total Risk Integrated Methodology (TRIM)

  • Overview
  • TRIM.FaTE
  • TRIM.Expo
  • TRIM.Risk
  • Peer Review and Publications

Multimedia Fate and Transport Modeling

  • Overview
  • TRIM.FaTE
  • Other Models and Related Information

Human Exposure Assessment and Modeling

  • Overview
  • Criteria Air Pollutant Exposure Assessment
  • Databases to Support Exposure Modeling
  • Air Pollutants Exposure Model (APEX/ TRIM.Expo Inhalation)
  • Hazardous Air Pollutant Exposure Model (HAPEM)
  • Other Models and Exposure-Related Information    

Risk Assessment and Modeling

  • Overview
  • Air Toxics Risk Assessment
  • Criteria Air Pollutant Risk Assessment
  • Human Exposure Model (HEM)
  • EPA Risk Assessment Policy, Guidelines, and Related Materials

Download Fate, Exposure and Risk Models

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Last updated on April 25, 2022