The United States Environmental Protection Agency (EPA) is required under the Clean Air Act to conduct a conference to reevaluate Air Quality Modeling every 3 years. The EPA conducted the Thirteenth Conference on Air Quality Modeling on November 14th and 15th of 2023, focusing on proposed revisions to the Guideline on Air Quality Modeling (GAQM). As part of the federal rulemaking process, the proposed revisions are currently available for public comments until December 22, 2023.

Who do these modeling revisions apply to? Continue reading “EPA Guideline on Air Quality Modeling Revisions”