Air Plan Approval; Illinois; Infrastructure SIP Requirements for the 2012 PM2.5 and 2015 Ozone NAAQS

Document Headings Document headings vary by document type but may contain the following: the agency or agencies that issued and signed a document the number of the CFR title and the number of each part the document amends, proposes to amend, or is directly related to the agency docket number / agency internal file number the RIN which identifies each regulatory action listed in the Unified Agenda of Federal Regulatory and Deregulatory Actions See the Document Drafting Handbook for more details. Environmental Protection Agency 40 CFR Part 52 [EPA-R05-OAR-2017-0583; EPA-R05-OAR-2019-0311; EPA-R05-OAR-2020-0501; FRL-9056-04-R5] AGENCY: Environmental Protection Agency (EPA). ACTION: Final rule. SUMMARY: The Environmental Protection Agency (EPA) is approving elements of a State Implementation Plan (SIP) revision submitted by the State of Illinois regarding the infrastructure requirements of section 110 of the Clean Air Act (CAA) for the 2012 annual fine particulate matter (PM 2.5 ) and 2015 ozone National Ambient Air Quality Standards (NAAQS). Further, EPA is approving the infrastructure requirements related to Prevention of Significant Deterioration (PSD) for previous NAAQS. The infrastructure requirements are designed to ensure that the structural components of each state's air quality management program are adequate to meet the state's responsibilities under the CAA. EPA received comments on its September 29, 2021, proposed rule and withdrew the accompanying Direct Final Rule (DFR). After considering the comments, EPA is approving the revisions to the Illinois SIP as requested by the State on September 29, 2017, May 16, 2019, and September 22, 2020. DATES: This final rule is effective on May 9, 2022. ADDRESSES: EPA has established dockets for this action under Docket ID No. EPA-R05-OAR-2017-0583 (for PM 2.5 ), EPA-R05-OAR-2019-0311 (for ozone), and EPA-R05-OAR-2020-0501 (for PSD) at https://www.regulations.gov . Although listed in the index, some information is not pu…