The 2018 EPA Regional, State, and Local (RSL) Modelers' Workshop was held from Tuesday, June 5th through Thursday, June 7th, 2018 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 cross-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 Workshop was open to industry representatives and outside participants in addition to the co-regulating air agencies on Tuesday, June 5th to allow for a joint engagement of the entire permit modeling community on the continued interpretation and application of the recently revised Guideline on Air Quality Modeling (Appendix W) and the associated preferred air quality models, e.g., AERMOD. A portion of Tuesday afternoon was dedicated to presentations specific to single-source modeling guidance for ozone and PM2.5. The Workshop was open only to EPA personnel, federal partner agencies, and state, local, and tribal agency dispersion modelers on Wednesday and Thursday, June 6th and 7th.