Implementation of the National Ambient Air Quality Standards (NAAQS) for Fine Particulate Matter (PM2.5): State Implementation Plan (SIP) Requirements

On this page:

• Rule Summary
• Rule History
• Additional Resources

Rule Summary

This rule establishes planning requirements for states with areas that do not meet the National Ambient Air Quality Standards for fine particle pollution. These states must develop plans that demonstrate how they will meet the standards. This rule allows states to rely on common-sense strategies to implement particle pollution standards, and it also responds to a January 2013 court decision on EPA’s previous rules implementing the fine particle pollution standards. 

Rule History

08/24/2016 - Final PM Implementation Rule (pdf) (1,022 KB)

03/23/2015 - Proposed Rule (pdf) (955 KB)

Additional Resources

PM 2.5 Limited Maintenance Plan Guidance (pdf) (4.88 MB) - October 2022

Draft PM_2.5 Precursor Demonstration Guidance

PM_2.5 NAAQS Final SIP Requirements Rule - Fact Sheet and Webinar - July/Aug 2016

National Status of State Implementation Plan (SIP) Infrastructure Requirements By State

List of Areas Nonattainment for the 2012 PM_2.5 NAAQS

Information

Information on the Interstate Transport "Good Neighbor" Provision for the 2012 Fine Particulate Matter (PM) National Ambient Air Quality Standards (NAAQS) under Clean Air Act (CAA) Section 110(a)(2)(D)(i)(I)

Related Rules

Findings of Failure to Submit State Implementation Plan Submissions for the 2012 Fine Particulate Matter National Ambient Air Quality Standards (NAAQS)

2012 National Ambient Air Quality Standards (NAAQS) for Particulate Matter (PM_2.5)

Implementation of the 2006 Particulate Matter (PM_2.5) National Ambient Air Quality Standards (NAAQS)