PM2.5 Precursor Demonstration Guidance
On May 30, 2019, the EPA finalized the PM2.5 Precursor Demonstration Guidance. This guidance is designed to assist air agencies who may wish to develop optional PM2.5 precursor demonstrations as permitted by the PM2.5 State Implementation Plan Requirements Rule (81 FR 58009). In November 2016, EPA released a draft version of this guidance for public review and comment. After considering the comments, EPA made changes which are reflected in this final version of the guidance.
- Final PM2.5 Precursor Guidance.pdf (pdf)
- Webinar Slides for the Draft PM2.5 Draft Precursor Demonstration Guidance (pdf)
- Draft PM2.5 Precursor Demostration Guidance Public Comments (pdf)
Recent EPA-Approved PM2.5Precursor Demonstrations
|
State |
Area |
NAAQS |
Action Type |
Action Date |
Relevant PM2.5 Precursor |
Link to EPA Final Action |
Link to Technical Demonstration |
|
Ohio |
Cleveland |
2012 PM2.5 (24-hour) |
Final Approval |
September 6, 2018 |
Ammonia and VOCs |
||
|
Utah |
Logan |
2006 PM2.5 (24-hour) |
Final Approval |
July 25, 2019 |
Ammonia |