Rule lifecycle · DOCKET:EPA-R09-OAR-2026-3664
Attainment Date Extension for the South Coast, California 2012 Annual PM2.5 Fine Particulate Matter Nonattainment Area
Environmental Protection Agency — observed across 2 documents over 112 days. Use the source documents below before deciding whether this affects your business.
In plain English
The EPA is extending South Coast California's deadline to meet federal air quality standards for fine particle pollution. If you operate in that region, monitor local air regulations for any new emission limits or compliance deadlines that could affect your production schedule or require equipment upgrades.
First seen
Jun 11, 2026
Last seen
Oct 1, 2026
Latest stage
Rule
PRORULE → RULE
112d
Effective on
Monday, November 2, 2026
Stage timeline
Proposed·Jun 11, 2026·91 FR 35445
Attainment Date Extension for the South Coast, California 2012 Annual PM2.5 Fine Particulate Matter Nonattainment Area
comments close Jul 13, 2026#2026-11736
Final·Oct 1, 2026·91 FR 62316
Attainment Date Extension for the South Coast, California 2012 Annual PM2.5 Fine Particulate Matter Nonattainment Area
effective Nov 2, 2026#2026-20097