Air Plan Approval; Oklahoma; Updates to the State Implementation Plan for New Source Review Permitting and General SIP Provisions

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-R06-OAR-2024-0031; FRL-12970-02-R6] AGENCY: Environmental Protection Agency (EPA). ACTION: Final rule. SUMMARY: Pursuant to the Federal Clean Air Act (CAA or the Act), the Environmental Protection Agency (EPA) is approving identified portions of revisions to the Oklahoma State Implementation Plan (SIP) submitted by the State of Oklahoma designee between 2002 and 2025 to update the Oklahoma New Source Review (NSR) permit program and make general updates to the Oklahoma SIP. DATES: This rule is effective on August 3, 2026. ADDRESSES: The EPA has established a docket for this action under Docket ID No. EPA-R06-OAR-2024-0031. All documents in the docket are listed on the https://www.regulations.gov website. Although listed in the index, some information is not publicly available, e.g., Confidential Business Information or other information whose disclosure is restricted by statute. Certain other material, such as copyrighted material, is not placed on the internet. Publicly available docket materials are available electronically through https://www.regulations.gov . FOR FURTHER INFORMATION CONTACT: Adina Wiley; EPA Region 6 Office; Air Permits Section (ARPE); telephone number: (214) 665-2115; email address: wiley.adina@epa.gov . SUPPLEMENTARY INFORMATION: Throughout this document “we,” “us,” and “our” means the EPA. I. Background The background for this action is discussed in detail in our Nov…