2023-15290: Air Plan Approval; Illinois; NAAQS Update
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The Environmental Protection Agency (EPA) is proposing to approve a State Implementation Plan (SIP) revision submitted by the Illinois Environmental Protection Agency (IEPA or Illinois). The revision, submitted on July 8, 2022, incorporates revisions to the Illinois air pollution control rules entitled "Part 243--Ambient Air Quality Standards" and also updates the "List of Designated Reference and Equivalent Methods" in response to EPA rulemakings and changes to the National Ambient Air Quality Standards (NAAQS) that EPA adopted in 2021.
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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