2022-26504: Approval and Promulgation of Implementation Plans; Montana; Libby 1997 Annual PM2.5 Limited Maintenance Plan and Redesignation Request
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The Environmental Protection Agency (EPA or the Agency) is proposing to take three separate but related actions. First, EPA is proposing to determine that the Libby fine particulate matter (PM<INF>2.5</INF>) nonattainment area (Libby Area) is attaining the 1997 annual PM<INF>2.5</INF> national ambient air quality standards (NAAQS or standard) based on 2014-2021 data. The Agency is also proposing to approve Montana's plan for maintaining the 1997 annual PM<INF>2.5</INF> NAAQS (limited maintenance plan) and to redesignate the Libby Area to attainment for the 1997 annual PM<INF>2.5</INF> NAAQS, submitted by the State of Montana on June 24, 2020.
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.
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