2021-26619: Air Plan Approval; Arizona; Bullhead City; Second 10-Year PM10 Limited Maintenance Plan
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The Environmental Protection Agency (EPA) is proposing to approve a revision to the Bullhead City portion of the Arizona State Implementation Plan (SIP). These revisions concern the second 10-year maintenance plan for Bullhead City for the 1987 National Ambient Air Quality Standards (NAAQS or "standards") for particulate matter less than 10 micrometers in diameter (PM<INF>10</INF>).
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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