2018-09211: Air Plan Approval; Missouri; Regional Haze Plan and Prong 4 (Visibility) for the 2012 PM2.5, 2010 NO2, 2010 SO2, and 2008 Ozone NAAQS
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The Environmental Protection Agency (EPA) is proposing to take three actions regarding the Missouri State Implementation Plan (SIP). The three SIP actions relate to how Missouri addresses transport as related to visibility and the 2012 Fine Particulate Matter (PM<INF>2.5</INF>), 2010 Nitrogen Dioxide (NO<INF>2</INF>), 2010 Sulfur Dioxide (SO<INF>2</INF>), and 2008 Ozone National Ambient Air Quality Standards (NAAQS). EPA is proposing approval of the portion of Missouri's September 5, 2014, Five-year Progress Report for the State of Missouri Regional Haze Plan and a subsequently submitted letter dated July 31, 2017, which clarifies that the state was changing from reliance on the Clean Air Interstate Rule (CAIR) to reliance on the Cross State Air Pollution Rule (CSAPR) for certain regional haze requirements; convert EPA's limited approval/limited disapproval of Missouri's regional haze plan to a full approval; and approve the states' submissions addressing the Clean Air Act (CAA or the Act) provisions that prohibit emissions activity in one state from interfering with measures to protect visibility in another state (prong 4) of Missouri's infrastructure SIP submittals for the 2012 Fine Particulate Matter (PM<INF>2.5</INF>), 2010 Nitrogen Dioxide (NO<INF>2</INF>), and 2010 Sulfur Dioxide (SO<INF>2</INF>) NAAQS.
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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