2024-12781: Partial Approval and Partial Disapproval of Air Quality State Implementation Plans; Arizona; Infrastructure Requirements for Fine Particulate Matter
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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<INF>2.5</INF>) national ambient air quality standards (NAAQS or "standards"). As part of this action, the EPA is proposing to approve regulatory provisions into the Arizona SIP. The EPA is seeking public comment on this proposed action and will accept comments from the public on this proposal for the next 30 days.
The agency’s own summary, as published.
What this changes
Amends 1 part of the Code of Federal Regulations — the standing rules this notice rewrites.
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