An official website of the United States government.

We've made some changes to If the information you are looking for is not here, you may be able to find it on the EPA Web Archive or the January 19, 2017 Web Snapshot.

Support Center for Regulatory Atmospheric Modeling (SCRAM)

2017 Regional, State, and Local Modelers' Workshop

You will need Adobe Reader to view some of the files on this page. See EPA’s About PDF page to learn more.The 2017 EPA Regional, State, and Local (RSL) Modelers' Workshop was held from Monday, September 25th through Tuesday, September 26th, 2017 at the EPA facilities in RTP, NC. This annual Workshop provides the federal, state, local, and tribal levels of the regulatory modeling community the opportunity to present, interact, and communicate various technical issues and solutions related to local-scale air quality modeling. The Workshop addresses ross-cutting issues related to permit modeling, as well as selected topics provided by Regional, State, and Local modelers. On Monday, September 25th, the Workshop was open to industrial representatives and consultants so that we could have a joint engagement along with the co-regulating permit modeling community on the final revisions to the Guideline on Air Quality Modeling (Appendix W) and on the future direction of AERMOD model development.

The final agenda for the Workshop and is available through the following link and includes links to all of the Workshop presentations.

2017 EPA RSL Modelers' Workshop Final Agenda (PDF, 56KB)

During the Monday afternoon Workshop session, a series of EPA White Papers regarding planned updates to the AERMOD Modeling System were presented. In preparation of these presentations and to encourage more stakeholder and co-regulating agency engagement, we provided a combined White Paper package via the link below for review in the week prior to the Workshop.

AERMOD Development White Papers (PDF, 817KB)

Please let us know if there are additional questions or comments concerning the 2017 EPA Regional, State, and Local Modelers' Workshop by contacting George Bridgers (