Air Plan Approval; Maine; Infrastructure State Implementation Plan Requirements for the 2015 Ozone Standard and Negative Declaration for the Oil and Gas Industry for the 2008 and 2015 Ozone Standards; Correction

The Environmental Protection Agency (EPA) is correcting a final rule that was published in the Federal Register on May 13, 2021 which will be effective on June 14, 2021. The final rule approved a State Implementation Plan (SIP) revision submitted by the State of Maine which addresses the infrastructure requirements of the Clean Air Act (CAA or Act) for the 2015 ozone National Ambient Air Quality Standards (NAAQS); as well as a SIP revision containing amendments to Maine's 06-096 CMR Chapter 110, "Ambient Air Quality Standards," and SIP revisions submitted by Maine that provide the state's determination, via a negative declaration for the 2008 and 2015 ozone standards, that there are no facilities within its borders subject to EPA's 2016 Control Technique Guideline (CTG) for the oil and gas industry. This correction does not change any final action taken by EPA on May 13, 2021; this action merely provides further clarification on the amendments to the regulatory language contained in the Code of Federal Regulations (CFR) and includes a minor change to the CFR to rearrange the location of the entry for Maine's previously approved Chapter 166 regulation.