2018-01493: Approval and Promulgation of Air Quality Implementation Plans; State of Wyoming; Sheridan PM10 Nonattainment Area Limited Maintenance Plan and Redesignation Request
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The Environmental Protection Agency (EPA) is proposing to fully approve the Limited Maintenance Plan (LMP), submitted by the State of Wyoming to the EPA on June 2, 2017, for the Sheridan moderate PM<INF>10</INF> nonattainment area (Sheridan NAA) and concurrently redesignate the Sheridan NAA to attainment of the National Ambient Air Quality Standard (NAAQS) for particulate matter with an aerodynamic diameter less than or equal to a nominal 10 micrometers (PM<INF>10</INF>). In order to approve the LMP and redesignation, the EPA is proposing to determine that the Sheridan NAA has attained the 1987 24-hour PM<INF>10</INF> NAAQS of 150 [micro]g/m\3\. This determination is based upon monitored air quality data for the PM<INF>10</INF> NAAQS during the years 2014-2016. Additionally, the EPA is proposing to approve the Sheridan LMP as meeting the appropriate transportation conformity requirements found in 40 CFR 93, subpart A.
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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