Approval and Promulgation of Implementation Plans; Arkansas; Interstate Transport Requirements for the 2012 PM2.5
Pursuant to the Federal Clean Air Act (CAA or the Act), the Environmental Protection Agency (EPA) is approving portions of the Arkansas State Implementation Plan (SIP) submittal addressing the CAA requirement that SIPs address the potential for interstate transport of air pollution to significantly contribute to nonattainment or interfere with maintenance of the 2012 fine particulate matter (PM2.5) National Ambient Air Quality Standard (NAAQS) in other states. EPA finds that emissions from Arkansas sources do not contribute significantly to nonattainment in, or interfere with maintenance by, any other state with regard to the 2012 PM2.5 NAAQS. The EPA is also approving a revision to update incorporation by reference of NAAQS germane to the Arkansas SIP.
Air Quality State Implementation Plans; Approvals and Promulgations: Infrastructure Monitoring Requirements for the 2008 Pb, 2010 SO2
The Environmental Protection Agency (EPA) is approving elements of State Implementation Plan (SIP) revisions from the State of Utah to demonstrate the State meets infrastructure monitoring requirements of the Clean Air Act (Act or CAA) for the National Ambient Air Quality Standards (NAAQS) promulgated for lead (Pb) on October 15, 2008, nitrogen dioxide (NO2) on January 22, 2010, sulfur dioxide (SO2) on June 2, 2010, and fine particulate matter (PM2.5) on December 14, 2012. The EPA is taking this action pursuant to section 110 of the Clean Air Act (CAA).
Approval and Promulgation of Air Quality Implementation Plans; Wyoming; Incorporation by Reference Updates
The Environmental Protection Agency (EPA) is approving eight State Implementation Plan (SIP) revisions submitted by the State of Wyoming; four submitted on March 27, 2017, and four submitted on March 28, 2018. The revisions include updates to incorporation by reference within several parts of the Wyoming Air Quality Standards and Regulations that are part of the SIP. Additional revisions are being approved that: Correct an inconsistency regarding internal combustion engine nitrogen oxide requirements; amend three state regulations to maintain consistency with federal regulations; and update a state internet address.
Air Plan Approval; Washington; Interstate Transport Requirements for the 2015 Ozone NAAQS
The Clean Air Act (CAA) requires each State Implementation Plan (SIP) to contain adequate provisions prohibiting emissions that will have certain adverse air quality effects in other states. On February 7, 2018, the State of Washington made a submittal to the Environmental Protection Agency (EPA) to address these requirements for the 2015 ozone National Ambient Air Quality Standards (NAAQS). The EPA is approving the submittal as meeting the requirement that each SIP contain adequate provisions to prohibit emissions that will significantly contribute to nonattainment or interfere with maintenance of the 2015 ozone NAAQS in any other state.
Approval of Missouri Air Quality Implementation Plans; Redesignation of the Missouri Portion of the St. Louis-St. Charles-Farmington, MO-IL 2008 Ozone Area to Attainment
The Environmental Protection Agency (EPA) is taking final action to redesignate the Missouri portion of the St. Louis-St. Charles-Farmington, MO-IL nonattainment area (``St. Louis area'' or ``area'') to attainment for the 2008 ozone National Ambient Air Quality Standard (NAAQS). EPA is also approving, as a revision to the Missouri State Implementation Plan (SIP), the state's plan for maintaining the 2008 8-hour ozone NAAQS through 2030. Finally, EPA finds adequate and is approving, as a SIP revision, the State's 2030 volatile organic compound (VOC) and oxides of nitrogen (NOX) Motor Vehicle Emission Budgets (MVEBs) for the Missouri portion of the St. Louis area. The Missouri Department of Natural Resources (MDNR) submitted this request on September 12, 2016, with a supplemental submission on February 16, 2018. EPA addressed the Illinois portion of the St. Louis area in a separate rulemaking action published in the Federal Register on March 1, 2018.