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  2. Particulate Matter (PM) Pollution

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) (673.8 KB)
  • Webinar Slides for the Draft PM2.5 Draft Precursor Demonstration Guidance (pdf) (378.44 KB, 12/16/16)
  • Draft PM2.5 Precursor Demostration Guidance Public Comments (pdf) (5.18 MB, 5/26/17)

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

83 FR 45193

Cleveland Moderate PM2.5 SIP Attainment Demonstration

Utah

Logan

2006 PM2.5  (24-hour)

Final Approval

July 25, 2019

Ammonia

84 FR 35831

Logan Moderate PM2.5 SIP NNSR Demonstration

Particulate Matter (PM) Pollution

  • Particulate Matter (PM) Basics
  • Health and Environmental Effects
  • Setting and Reviewing PM Standards
  • PM Standards Regulatory Actions
  • Implementing PM Standards
  • PM Implementation Regulatory Actions
  • SIP Checklist Guide
  • PM SIP Training Presentations
  • PM Data and SIP Status Reports
  • Other Criteria Air Pollutants
Contact Us about Particulate Matter (PM) Pollution
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on May 28, 2025
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