2025 Regional, State, and Local Dispersion Modelers' Workshop
Please save the dates of July 8 to July 10 for the 2025 Regional, State, and Local (RSL) Dispersion Modelers' Workshop.
The 2025 RSL Dispersion Modelers' Workshop will be held in downtown Nashville, TN at the William R. Snodgrass Tennessee Tower from July 8th through July 10th, 2025. The Tennessee Division of Air Pollution Control is our gracious host agency this year.
Stakeholders will be able to participate virtually on the afternoon of Tuesday, July 8th. Otherwise, the 2025 RSL Dispersion Modelers' Workshop will only be open to co-regulatory air permitting agencies. The Workshop proceedings will also be hosted virtually via MS Teams for those co-regulatory air permitting agencies unable to travel to Nashville, but in-person attendance is strongly encouraged. Afterwards, the presentations from all three days of Workshop will be posted to the EPA's SCRAM website.
Of note, there were originally plans to host a Photochemical Modeling session as part this year's RSL Modelers' Workshop (similar to 2005 and 2012), but a decision has been made to postpone these plans until at least 2026 to better align with Agency priorities and co-regulatory agencies needs.
- Workshop Flyer (PDF) (1 p, 791 K, 06-13-2025)
- Physical Meeting Location (Updated to new location on 06-13-2025):
- William R. Snodgrass Tennessee Tower
Tennessee Room 2 – Third Floor
312 Rosa L. Parks Avenue
Nashville, TN 37243
- William R. Snodgrass Tennessee Tower
- Workshop Times / Draft Agenda:
- Stakeholder (virtual only) and Co-regulatory (in-person & virtual) Dispersion Modelers' Session:
- Tuesday (July 8) - 1:00p to 4:15p CDT
- MS Teams connection information:
https://teams.microsoft.com/l/meetup-join/19%3ameeting_Nzg4NDNmNzktM2IxZC00ZjJlLTg5YTktYTJlODNjNzVlNmIz%40thread.v2/0?context=%7b%22Tid%22%3a%2288b378b3-6748-4867-acf9-76aacbeca6a7%22%2c%22Oid%22%3a%2254b623ab-f757-4291-9f9d-9e8f0274506f%22%7d
Online Meeting ID: 241 877 444 423 5, Passcode: ot9yL9W8
Phone: (984)444-7480, Conference ID: 814101218
- MS Teams connection information:
- Tuesday (July 8) - 1:00p to 4:15p CDT
- Co-regulatory (in-person & virtual) Dispersion Modelers' Session:
- Wednesday (July 9) - 8:30a to 4:30p CDT
- Thursday (July 10) - 8:00a - 11:30a CDT
- Draft Workshop Agenda (3p, 196 K, 06-09-2025)
- Stakeholder (virtual only) and Co-regulatory (in-person & virtual) Dispersion Modelers' Session:
- Registration:
- Registration is requested for the purposes of event communications, logistical planning, and (for in-person attendees) expediting entrance to the Nashville Main Public Library Building.
- Both in-person and virtual attendees are asked to register this year.
- Registration Link: https://forms.gle/xcZ9uTDDS4EUvBpG8
- Hotel Information
- We are unable to offer a established hotel room block this year, but there are several nearby national chain hotels that offer state and federal per diem rates.
- The federal per diem rate for Nashville, TN in July is $217 per night pre tax.
- Virtual Connectivity Information:
- Connectivity information for the Wednesday and Thursday sessions will be shared with the co-regulatory agencies via direct email from the EPA Headquarters, EPA Regional Offices, and the various MJOs a few weeks ahead of the Workshop.
- By participating in EPA hosted virtual meetings and events, you are consenting to abide by the Agency's terms of use. In addition, you acknowledge that content you post may be collected and used in support of FOIA and eDiscovery activities.
Please let us know if there are additional questions or comments concerning the 2025 EPA Regional, State, and Local Dispersion Modelers' Workshop by contacting George Bridgers (bridgers.george@epa.gov).