2020-11930: Maintenance Plan and Redesignation Request for the Ajo PM10 Planning Area; Arizona
Public comment closed .
Get alerted when the next rule lands
New rules open for comment on their own schedule. Pick how you want to hear about them — we email you when one appears.
Publishing to members? Embed a live rule tracker on your own site — the proposed rules in your area and the comment deadlines closing on them, updating themselves. Free, one line of HTML.
Create a free account & build one →Summary
The Environmental Protection Agency (EPA) is proposing to approve the "Ajo PM<INF>10</INF> Redesignation Request and Maintenance Plan (May 3, 2019)" ("Ajo PM<INF>10</INF> Maintenance Plan" or "Plan") as a revision to the state implementation plan (SIP) for the State of Arizona. The Ajo PM<INF>10</INF> Maintenance Plan includes, among other elements, an emissions inventory consistent with attainment, a maintenance demonstration, contingency provisions, and a demonstration that contributions from motor vehicle emissions to PM<INF>10</INF> in the Ajo planning area are insignificant. The EPA is also proposing to approve the State of Arizona's request to redesignate the Ajo planning area from nonattainment to attainment for the national ambient air quality standards (NAAQS or "standards") for particulate matter of ten microns or less (PM<INF>10</INF>). Lastly, the EPA is proposing to delete the area designation for Ajo for the revoked NAAQS for total suspended particulate (TSP) because the designation is no longer necessary. The EPA is proposing these actions because the SIP revision meets the applicable requirements under the Clean Air Act (CAA or "Act") for maintenance plans and because the State has met the requirements under the Act for redesignation of a nonattainment area to attainment with respect to the Ajo planning area.
The agency’s own summary, as published.
What this changes
Amends 2 parts of the Code of Federal Regulations — the standing rules this notice rewrites.
Don't miss the comment window
One Click Politics alerts you on every deadline, hearing, and rule change.
See all rules with comments due soon →