Air Plan Approval; Connecticut; Revised Format for Materials Incorporated by Reference

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-R01-OAR-2025-2895; FRL-13084-01-R1] AGENCY: Environmental Protection Agency (EPA). ACTION: Final rule; administrative change. SUMMARY: The Environmental Protection Agency (EPA) is revising the format for materials that are made part of the Connecticut State Implementation Plan (SIP) through the process of incorporation by reference (IBR). The regulations and materials affected by this format change have all been previously submitted by Connecticut and approved by EPA as part of the SIP. DATES: This action is effective on February 9, 2026. ( printed page 5676) ADDRESSES: EPA has established a docket for this action under Docket ID No. EPA-R01-OAR-2025-2895. SIP materials which are incorporated by reference into 40 CFR part 52 are available for inspection by appointment at Environmental Protection Agency, Region 1, 5 Post Office Square, Boston, Massachusetts 02109-3912. For information on the availability of this material at the EPA Regional Office, please contact the person in the FOR FURTHER INFORMATION CONTACT section of this document. FOR FURTHER INFORMATION CONTACT: Patrick Lillis, Air and Radiation Division, Environmental Protection Agency, Region 1, 5 Post Office Square—Suite 100, Boston, MA 02109, (617) 917-1067, lillis.patrick@epa.gov . SUPPLEMENTARY INFORMATION: Throughout this document, wherever “we,” “us” or “our” is used, it is intended to refer to EPA. Table of Contents I…