{"abstract":"The Environmental Protection Agency (EPA) is updating the materials that are incorporated by reference (IBR) into the Alaska State Implementation Plan (SIP). The regulations affected by this update have been previously submitted by the State of Alaska and approved by the EPA. This update affects the materials that are available for public inspection at the EPA Regional Office and the National Archives and Records Administration.","action":"Final rule; administrative change.","agencies":[{"raw_name":"ENVIRONMENTAL PROTECTION AGENCY","name":"Environmental Protection Agency","id":145,"url":"https://www.federalregister.gov/agencies/environmental-protection-agency","json_url":"https://www.federalregister.gov/api/v1/agencies/145","parent_id":null,"slug":"environmental-protection-agency"}],"body_html_url":"https://www.federalregister.gov/documents/full_text/html/2026/02/09/2026-02478.html","cfr_references":[{"chapter":null,"citation_url":null,"part":52,"title":40}],"citation":"91 FR 5686","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"This action is effective February 9, 2026.","disposition_notes":null,"docket_ids":["EPA-R10-OAR-2025-3357","FRL-13106-01-R10"],"dockets":[{"supporting_documents":[{"title":"IBR_13106-01-R10 AK SIP Notebook Update IBR materials 11 21 2025","document_id":"EPA-R10-OAR-2025-3357-0002"}],"agency_name":"EPA","documents":[{"comment_count":0,"comment_start_date":"2026-02-09","updated_at":"2026-02-09T12:55:22.959-05:00","comment_url":"https://www.regulations.gov/commenton/EPA-R10-OAR-2025-3357-0001","allow_late_comments":false,"id":"EPA-R10-OAR-2025-3357-0001","comment_end_date":null,"regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":1,"id":"EPA-R10-OAR-2025-3357","title":"Air Plan Approval; AK; Updates to Materials Incorporated by Reference"}],"document_number":"2026-02478","effective_on":"2026-02-09","end_page":5688,"executive_order_notes":null,"executive_order_number":null,"explanation":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2026/02/09/2026-02478.xml","html_url":"https://www.federalregister.gov/documents/2026/02/09/2026-02478/air-plan-approval-ak-updates-to-materials-incorporated-by-reference","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2026-02478?publication_date=2026-02-09","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2026-02-09/2026-02478/mods.xml","not_received_for_publication":null,"page_length":3,"page_views":{"count":108,"last_updated":"2026-04-06 00:15:03 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2026-02-09/pdf/2026-02478.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2026-02478.pdf?1770385509","publication_date":"2026-02-09","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2026/02/09/2026-02478.txt","regulation_id_number_info":{},"regulation_id_numbers":[],"regulations_dot_gov_info":{"supporting_documents":[{"title":"IBR_13106-01-R10 AK SIP Notebook Update IBR materials 11 21 2025","document_id":"EPA-R10-OAR-2025-3357-0002"}],"comments_count":0,"agency_id":"EPA","comments_url":"https://www.regulations.gov/docketBrowser?rpp=50&so=DESC&sb=postedDate&po=0&dct=PS&D=EPA-R10-OAR-2025-3357","supporting_documents_count":1,"docket_id":"EPA-R10-OAR-2025-3357","document_id":"EPA-R10-OAR-2025-3357-0001","regulation_id_number":null,"title":"Air Plan Approval; AK; Updates to Materials Incorporated by Reference","checked_regulationsdotgov_at":"2026-02-10T21:55:04Z"},"regulations_dot_gov_url":null,"significant":null,"signing_date":null,"start_page":5686,"subtype":null,"title":"Air Plan Approval; AK; Updates to Materials Incorporated by Reference","toc_doc":"Alaska; Updates to Materials Incorporated by Reference","toc_subject":"Air Quality State Implementation Plans; Approvals and Promulgations","topics":["Air pollution control","Carbon monoxide","Environmental protection","Incorporation by reference","Intergovernmental relations","Lead","Nitrogen dioxide","Ozone","Particulate matter","Reporting and recordkeeping requirements","Sulfur oxides","Volatile organic compounds"],"type":"Rule","volume":91}