Air Plan Approval; Wisconsin; Reasonable Further Progress Plan and Other Plan Elements for the Moderate Nonattainment Chicago Area for the 2008 Ozone Standards
The Environmental Protection Agency (EPA) is proposing to approve a revision to the Wisconsin State Implementation Plan (SIP) to meet the base year emissions inventory, reasonable further progress (RFP), RFP contingency measure, nitrogen oxides (NOX) reasonably available control technology (RACT), and motor vehicle inspection and maintenance (I/M) requirements of the Clean Air Act (CAA) for the Wisconsin portion of the Chicago-Naperville, Illinois- Indiana-Wisconsin nonattainment area (Chicago area) for the 2008 ozone National Ambient Air Quality Standards (NAAQS or standards). EPA is also proposing to approve the 2017 and 2018 transportation conformity motor vehicle emissions budgets (MVEBs) for the Wisconsin portion of the Chicago area for the 2008 ozone NAAQS. EPA is proposing to approve this SIP revision pursuant to section 110 and part D of the CAA and EPA's regulations because it satisfies the emission inventory, RFP, RFP contingency measure, NOX RACT, I/M, and transportation conformity requirements for the Wisconsin portion of the Chicago area, which is classified as moderate nonattainment for the 2008 ozone NAAQS.
Air Plan Approval; Ohio; Approval of Sulfur Dioxide Regulations
The Environmental Protection Agency (EPA) is proposing to approve, under the Clean Air Act, Ohio's revised sulfur dioxide (SO2) regulations, which Ohio submitted to EPA on March 13, 2017. Ohio updated its regulations to correct facility information which has changed and to add new emission limits for selected sources in Lake and Jefferson Counties. The revised regulations do not impose substantive changes or additional emission restrictions upon the Ohio State Implementation Plan (SIP) except for the site-specific provisions which have been revised in response to Ohio's nonattainment area designations of August 5, 2013. EPA is proposing to approve the majority of the revised regulations which the state submitted. EPA proposes to take no action on a portion of one submitted rule, which has never been federally approved. EPA also proposes to remove one rule from the SIP, which Ohio rescinded and replaced in 2009.
Air Plan Approval; State of Iowa; Attainment Redesignation for 2008 Lead NAAQS and Associated Maintenance Plan
The Environmental Protection Agency (EPA) is proposing to take action to approve the State of Iowa's request to redesignate portions of Pottawattamie County, Council Bluffs, Iowa to attainment for the 2008 lead (Pb) National Ambient Air Quality Standards (NAAQS). EPA's proposed approval of the redesignation request is based on the determination that the Council Bluffs area has met the criteria for redesignation to attainment set forth in the Clean Air Act (CAA), including the determination that the area has attained the standard. Additionally, EPA is approving the state's plan for maintaining the 2008 Pb NAAQS in the Council Bluffs area for ten years beyond redesignation.