Air Plan Approval; AK; Regional Haze Plan for the Second Implementation Period; Extension of Comment Period

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-R10-OAR-2023-0348; FRL-11133-03-R10] AGENCY: Environmental Protection Agency (EPA). ACTION: Proposed rule; extension of comment period. SUMMARY: The Environmental Protection Agency (EPA) is extending the comment period for the proposed rulemaking entitled “Air Plan Approval; AK; Regional Haze Plan for the Second Implementation Period,” that published on October 30, 2025. This will allow interested persons additional time to prepare and submit comments. DATES: The comment period for the action that published on October 30, 2025 ( 90 FR 48855 ), is extended. Written comments must be received on or before December 16, 2025. ADDRESSES: Submit your comments, identified by Docket ID No. EPA-R10-OAR-2023-0348 at https://www.regulations.gov . For comments submitted at regulations.gov, follow the online instructions for submitting comments. Once submitted, comments may not be edited or removed from regulations.gov. For either manner of submission, the EPA may publish any comment received to its public docket. Do not submit electronically any information you consider to be confidential business information or other information the disclosure of which is restricted by statute. Multimedia submissions (audio, video, etc.) must be accompanied by a written comment. The written comment is considered the official comment and should include discussion of all points you wish to make. The EPA will generally not consider comments or …