Skip to content
TeamCOG
TeamCOG
Citizens Observing Government
Subscribe
Try
Reports Agencies Topics Broadcasts Newsroom About Subscribe
EPA Office of the Federal Register / National Archives and Records Administration · Rulemaking

Partial Approval and Partial Disapproval of Air Quality State Implementation Plans; Arizona; Prevention of Significant Deterioration Infrastructure Requirements for the 2012 Fine Particulate Matter National Ambient Air Quality Standard

Environmental Protection Agency | Proposed Rule | The Environmental Protection Agency (EPA) is proposing to partially approve and partially disapprove a revision to the Arizona State implementation plan (SIP) as meeting the requirements of the Clean Air Act (CAA) for the implementation, maintenance, and enforcement of the 2012 fine particulate matter (PM 2.5 ) national ambient air quality standard (NAAQS or "standards"). The EPA is proposing to approve the portions of Arizona's submission addressing prevention of significant deterioration (PSD) requirements in the permitting jurisdictions of the Arizona Department of Environmental Quality (ADEQ), Maricopa County Air Quality Department (MCAQ.

CW Reported by Claire Walsh
August 6, 2026 · 1 min read

Partial Approval and Partial Disapproval of Air Quality State Implementation Plans; Arizona; Prevention of Significant Deterioration Infrastructure Requirements for the 2012 Fine Particulate Matter National Ambient Air Quality Standard.

The item is dated 2026-08-06.

TeamCog is carrying it as a rulemaking report from FederalRegister.gov published documents API.

Environmental Protection Agency | Proposed Rule | The Environmental Protection Agency (EPA) is proposing to partially approve and partially disapprove a revision to the Arizona State implementation plan (SIP) as meeting the requirements of the Clean Air Act (CAA) for the implementation, maintenance, and enforcement of the 2012 fine particulate matter (PM 2.5 ) national ambient air quality standard (NAAQS or "standards").

The EPA is proposing to approve the portions of Arizona's submission addressing prevention of significant deterioration (PSD) requirements in the permitting jurisdictions of the Arizona Department of Environmental Quality (ADEQ), Maricopa County Air Quality Department (MCAQ…

The handoff preserves the official source citation and source-completeness evidence supplied by discovery.

Editors should keep any claims tied to that source record.

Official Source

FederalRegister.gov published documents API. Accessed 2026-08-07T03:00:06.917Z.