EPA proposes revisions to Guideline on Air Quality Models

On July 14, 2015 EPA proposed revisions to the Guideline on Air Quality Models, or 40 CFR 51 Appendix W. ┬áThese proposed changes include enhancements to AERMOD (including the inclusion of BLP into AERMOD) and demoting CALPUFF as a preferred model for long-range transport. ┬áThese proposed revisions were presented at the 11th Conference on Air Quality Modeling, held at EPA’s offices at Research Triangle Park, NC, in August (which OES attended).

The Federal Register notice for these proposed revisions can be found here, and the comment period extends through October 27, 2015.