APEX User Guides
The Air Pollutants Exposure model (APEX) is part of EPA’s overall Total Risk Integrated Methodology (TRIM) model framework. The documents below are for APEX 5.2 and 4.5 and 4.3 and 3.x. The User Guides and Technical Documentation support the TRIM.Expo Inhalation / APEX model.
User’s Guides for version 5.2
- An Introduction to APEX (2020)
- Air Pollutants Exposure Model Documentation (APEX, Version 5.2) Volume I: User's Guide (pdf)
- Air Pollutants Exposure Model Documentation (APEX, Version 5.2) Volume II: Technical Support Document (pdf)
User’s Guides for version 4.5
- Total Risk Integrated Methodology (TRIM) Air Pollutants Exposure Model Documentation (TRIM.Expo / APEX, Version 4.5) Volume I: User's Guide - EPA-452/B-12-001a August 2012
- Total Risk Integrated Methodology (TRIM) Air Pollutants Exposure Model Documentation (TRIM.Expo / APEX, Version 4.5) Volume II: Technical Support Document, EPA-452/B-12-001b, August 2012
User’s Guides for version 3.3