Guidance on New R-LINE Additions to AERMOD 19191 now available

EPA’s “Guidance on New R-LINE Additions to AERMOD 19191 for Refined Transportation Project Analyses” is now final and available online at:

A direct link to the guidance:

On August 21, 2019, EPA released a new version of its preferred dispersion model, AERMOD 19191. AERMOD 19191 builds upon the previous version of AERMOD, AERMOD 18081, and adds new features from EPA’s R-LINE model. Information about AERMOD and this latest release can be found on EPA’s website at: This guidance is part of the resources EPA is providing with the release of AERMOD 19191. It addresses the use of the new R-LINE features in AERMOD 19191 for dispersion modeling of transportation sources.

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