{"abstract":"The Environmental Protection Agency (EPA) is finalizing deadlines for submission of state implementation plan (SIP) revisions and implementation of the relevant control requirements that will apply for nonattainment areas reclassified as Moderate, Serious, and Severe under the current and any future ozone National Ambient Air Quality Standards (NAAQS) as a result of either failing to attain the standard by the applicable classification attainment date or the EPA granting a voluntary reclassification request. This final rule articulates the implementation requirements and timeframes that will apply for all such areas once reclassified. The EPA is also finalizing regulatory revisions to codify its existing interpretation that following reclassification, a state is no longer required to submit SIP revisions addressing certain, but not all, requirements related to the prior classification level for an ozone nonattainment area.","action":"Final rule.","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/2025/01/17/2025-00336.html","cfr_references":[{"chapter":null,"citation_url":null,"part":"51","title":40}],"citation":"90 FR 5651","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"This rule is effective on February 18, 2025.","disposition_notes":null,"docket_ids":["EPA-HQ-OAR-2024-0333","FRL-11817-02-OAR"],"dockets":[{"supporting_documents":[{"title":"General Preamble: State Implementation Plans; General Preamble for the Implementation of Title I of the Clean Air Act of 1990, 57 FR 13498, April 16, 1992","document_id":"EPA-HQ-OAR-2024-0333-0028"},{"title":"Guidance: Guidance for On-Road Testing Requirements for Enhanced Vehicle Inspection and Maintenance (I/M) Programs, Transportation and Climate Division, Office of Transportation and Air Quality, March 2020","document_id":"EPA-HQ-OAR-2024-0333-0027"},{"title":"Final Rule: Determinations of Attainment by the Attainment Date, Extensions of the Attainment Date, and Reclassification of Areas Classified as Marginal for the 2015 Ozone National Ambient Air Quality Standards, 87 FR 60897, October 7, 2022","document_id":"EPA-HQ-OAR-2024-0333-0026"},{"title":"Proposed Rule: Determinations of Attainment by the Attainment Date, Extension of the Attainment Date, and Reclassification of Areas Classified as Serious for the 2008 Ozone National Ambient Air Quality Standards, 87 FR 21825, April 13, 2022","document_id":"EPA-HQ-OAR-2024-0333-0025"},{"title":"Guidance: Guidance for Fulfilling the Clean Fuel Fleets Requirement of the Clean Air Act, Transportation and Climate Division, Office of Transportation and Air Quality, June 2022","document_id":"EPA-HQ-OAR-2024-0333-0024"},{"title":"Final Rule: National Ambient Air Quality Standards for Ozone, 80 FR 65292, October 26, 2015","document_id":"EPA-HQ-OAR-2024-0333-0023"},{"title":"Policy: Public Involvement Policy of the U.S. Environmental Protection Agency, May 2003","document_id":"EPA-HQ-OAR-2024-0333-0022"},{"title":"Final Rule: Implementation of the 2015 National Ambient Air Quality Standards for Ozone: Nonattainment Area Classifications Approach, 83 FR 10376, March 9, 2018","document_id":"EPA-HQ-OAR-2024-0333-0021"},{"title":"Guidance: Performance Standard Modeling for New and Existing Vehicle Inspection and Maintenance (I/M) Programs Using the MOVES Mobile Source Emissions Model, Transportation and Climate Division, Office of Transportation and Air Quality, October 2022","document_id":"EPA-HQ-OAR-2024-0333-0020"},{"title":"Final Rule: Fine Particulate Matter National Ambient Air Quality Standards: State Implementation Plan Requirements, 81 FR 58010, August 24, 2016","document_id":"EPA-HQ-OAR-2024-0333-0019"}],"agency_name":"EPA","documents":[{"comment_count":0,"comment_start_date":"2025-01-17","updated_at":"2025-01-17T16:57:07.608-05:00","comment_url":"https://www.regulations.gov/commenton/EPA-HQ-OAR-2024-0333-0045","allow_late_comments":false,"id":"EPA-HQ-OAR-2024-0333-0045","comment_end_date":null,"regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":27,"id":"EPA-HQ-OAR-2024-0333","title":"State Implementation Plan Submittal Deadlines and Implementation Requirements for Reclassified Nonattainment Areas Under the Ozone National Ambient Air Quality Standards"}],"document_number":"2025-00336","effective_on":"2025-02-18","end_page":5678,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2025/01/17/2025-00336.xml","html_url":"https://www.federalregister.gov/documents/2025/01/17/2025-00336/state-implementation-plan-submittal-deadlines-and-implementation-requirements-for-reclassified","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2025-00336?publication_date=2025-01-17","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2025-01-17/2025-00336/mods.xml","not_received_for_publication":null,"page_length":28,"page_views":{"count":1592,"last_updated":"2026-07-28 06:15:03 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2025-01-17/pdf/2025-00336.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2025-00336.pdf?1737035114","publication_date":"2025-01-17","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2025/01/17/2025-00336.txt","regulation_id_number_info":{"2060-AW25":{"issue":"202410","html_url":"https://www.federalregister.gov/regulations/2060-AW25/state-implementation-plan-submittal-deadlines-and-implementation-requirements-for-moderate-nonattain","title":"State Implementation Plan Submittal Deadlines and Implementation Requirements for Moderate Nonattainment Areas Reclassified Under the 2015 Ozone National Ambient Air Quality Standards","xml_url":"http://www.reginfo.gov/public/do/eAgendaViewRule?pubId=202410&RIN=2060-AW25&operation=OPERATION_EXPORT_XML","priority_category":"Substantive, Nonsignificant"}},"regulation_id_numbers":["2060-AW25"],"regulations_dot_gov_info":{"supporting_documents":[{"title":"General Preamble: State Implementation Plans; 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Approvals and Promulgations","topics":["Administrative practice and procedure","Air pollution control","Environmental protection","Intergovernmental relations","Nitrogen oxides","Ozone","Reporting and recordkeeping requirements","Volatile organic compounds"],"type":"Rule","volume":90}