{"abstract":"The U.S. Environmental Protection Agency (EPA) is reconsidering certain aspects of the January 2025 final rule entitled State Implementation Plan Submittal Deadlines and Implementation Requirements for Reclassified Nonattainment Areas Under the Ozone National Ambient Air Quality Standards (\"January 2025 final rule\"). Among other things, the January 2025 final rule codified a policy that certain State Implementation Plan (SIP) requirements for a prior classification remain due upon an area's reclassification to a higher classification. In this proposed action, the EPA is proposing a new interpretation that, upon reclassification, an area is subject only to those requirements in Clean Air Act (CAA) section 182 that are specific to that area's current classification. If finalized, this proposed rule would apply nationwide to all past and future reclassifications associated with the 2008, 2015, and any future ozone National Ambient Air Quality Standards (NAAQS). The EPA is not reconsidering or reopening any other aspect of the January 2025 final rule in this rulemaking and is not addressing the scope of applicable requirements for NAAQS other than the ozone NAAQS.","action":"Proposed 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/2026/06/12/2026-11843.html","cfr_references":[{"chapter":null,"citation_url":null,"part":"51","title":40}],"citation":"91 FR 35639","comment_url":null,"comments_close_on":"2026-07-13","correction_of":null,"corrections":[],"dates":"Comments must be received on or before July 13, 2026.","disposition_notes":null,"docket_ids":["EPA-HQ-OAR-2025-0201","FRL-11817.1-01-OAR"],"dockets":[{"supporting_documents":[{"title":"Letter Dated July 8, 2026, from Aaron Szabo, Assistant Administrator for Air and Radiation, USEPA, to Michelle Manion, Executive Director, Northeast States for Coordinated Air Use Management, Responding to a Request to Extend the Public Comment Period for the EPA's Proposed \"Ozone Reclassification State Implementation Plan Rule\"","document_id":"EPA-HQ-OAR-2025-0201-0047"},{"title":"Letter Dated July 8, 2026, from Aaron Szabo, Assistant Administrator for Air and Radiation, USEPA, to Richard Jackson, Chair, Ozone Transport Commission, Responding to a Request to Extend the Public Comment Period for the EPA's Proposed \"Ozone Reclassification State Implementation Plan Rule\"","document_id":"EPA-HQ-OAR-2025-0201-0046"},{"title":"Letter Dated July 8, 2026, from Aaron Szabo, Assistant Administrator for Air and Radiation, USEPA, to American Lung Association, Responding to a Request to Extend the Public Comment Period for the EPA's Proposed \"Ozone Reclassification State Implementation Plan Rule\"","document_id":"EPA-HQ-OAR-2025-0201-0045"},{"title":"Letter Dated July 9, 2026, from Aaron Szabo, Assistant Administrator for Air and Radiation, USEPA, to Jeffrey Hammons, Clean Air Task Force, Responding to a Request to Extend the Public Comment Period for the EPA's Proposed \"Ozone Reclassification State Implementation Plan Rule\"","document_id":"EPA-HQ-OAR-2025-0201-0044"},{"title":"Letter Dated July 8, 2026, from Aaron Szabo, Assistant Administrator for Air and Radiation, USEPA, to California Air Resources Board, Responding to a Request to Extend the Public Comment Period for the EPA's Proposed \"Ozone Reclassification State Implementation Plan Rule\"","document_id":"EPA-HQ-OAR-2025-0201-0043"},{"title":"E. O. 12866 Review: Ozone Reclassification State Implementation Plan Proposed Rule, OMB 1st Review Version (Word)","document_id":"EPA-HQ-OAR-2025-0201-0032"},{"title":"E.O. 12866 Initial Review: Ozone Reclassification State Implementation Plan Proposed Rule","document_id":"EPA-HQ-OAR-2025-0201-0031"},{"title":"E. O. 12866 Review: Ozone Reclassification State Implementation Plan Proposed Rule, OMB Passback 2","document_id":"EPA-HQ-OAR-2025-0201-0030"},{"title":"Final Rule: State Implementation Plan Submittal Deadlines and Implementation Requirements for Reclassified Nonattainment Areas Under the Ozone National Ambient Air Quality Standards, 90 FR 5651, January 17, 2025","document_id":"EPA-HQ-OAR-2025-0201-0027"},{"title":"Final Rule: Additional Air Quality Designations for the 2015 Ozone National Ambient Air Quality Standards, 83 FR 25776, June 4, 2018","document_id":"EPA-HQ-OAR-2025-0201-0025"}],"agency_name":"EPA","documents":[{"comment_count":32,"comment_start_date":"2026-06-12","updated_at":"2026-07-15T01:56:42.648-04:00","comment_url":"https://www.regulations.gov/commenton/EPA-HQ-OAR-2025-0201-0001","allow_late_comments":false,"id":"EPA-HQ-OAR-2025-0201-0001","comment_end_date":"2026-07-14","regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":36,"id":"EPA-HQ-OAR-2025-0201","title":"Reconsideration of State Implementation Plan Submittal Deadlines and Implementation Requirements for Reclassified Nonattainment Areas Under the Ozone National Ambient Air Quality Standards"}],"document_number":"2026-11843","effective_on":null,"end_page":35649,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2026/06/12/2026-11843.xml","html_url":"https://www.federalregister.gov/documents/2026/06/12/2026-11843/ozone-reclassification-state-implementation-plan-rule","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2026-11843?publication_date=2026-06-12","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2026-06-12/2026-11843/mods.xml","not_received_for_publication":null,"page_length":11,"page_views":{"count":1934,"last_updated":"2026-10-24 04:15:05 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2026-06-12/pdf/2026-11843.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2026-11843.pdf?1781181915","publication_date":"2026-06-12","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2026/06/12/2026-11843.txt","regulation_id_number_info":{"2060-AW81":{"issue":"202504","html_url":"https://www.federalregister.gov/regulations/2060-AW81/state-implementation-plan-submittal-deadlines-and-implementation-requirements-for-reclassified-nonat","title":"State Implementation Plan Submittal Deadlines and Implementation Requirements for Reclassified Nonattainment Areas Under the Ozone National Ambient Air Quality Standards Reconsideration","xml_url":"http://www.reginfo.gov/public/do/eAgendaViewRule?pubId=202504&RIN=2060-AW81&operation=OPERATION_EXPORT_XML","priority_category":"Substantive, Nonsignificant"}},"regulation_id_numbers":["2060-AW81"],"regulations_dot_gov_info":{"supporting_documents":[{"title":"Letter Dated July 8, 2026, from Aaron Szabo, Assistant Administrator for Air and Radiation, USEPA, to Michelle Manion, Executive Director, Northeast States for Coordinated Air Use Management, Responding to a Request to Extend the Public Comment Period for the EPA's Proposed \"Ozone Reclassification State Implementation Plan Rule\"","document_id":"EPA-HQ-OAR-2025-0201-0047"},{"title":"Letter Dated July 8, 2026, from Aaron Szabo, Assistant Administrator for Air and Radiation, USEPA, to Richard Jackson, Chair, Ozone Transport Commission, Responding to a Request to Extend the Public Comment Period for the EPA's Proposed \"Ozone Reclassification State Implementation Plan Rule\"","document_id":"EPA-HQ-OAR-2025-0201-0046"},{"title":"Letter Dated July 9, 2026, from Aaron Szabo, Assistant Administrator for Air and Radiation, USEPA, to Jeffrey Hammons, Clean Air Task Force, Responding to a Request to Extend the Public Comment Period for the EPA's Proposed \"Ozone Reclassification State Implementation Plan Rule\"","document_id":"EPA-HQ-OAR-2025-0201-0044"},{"title":"Letter Dated July 8, 2026, from Aaron Szabo, Assistant Administrator for Air and Radiation, USEPA, to California Air Resources Board, Responding to a Request to Extend the Public Comment Period for the EPA's Proposed \"Ozone Reclassification State Implementation Plan Rule\"","document_id":"EPA-HQ-OAR-2025-0201-0043"},{"title":"E. O. 12866 Review: Ozone Reclassification State Implementation Plan Proposed Rule, OMB 1st Review Version (Word)","document_id":"EPA-HQ-OAR-2025-0201-0032"},{"title":"E.O. 12866 Initial Review: Ozone Reclassification State Implementation Plan Proposed Rule","document_id":"EPA-HQ-OAR-2025-0201-0031"},{"title":"E. O. 12866 Review: Ozone Reclassification State Implementation Plan Proposed Rule, OMB Passback 2","document_id":"EPA-HQ-OAR-2025-0201-0030"},{"title":"E. O. 12866 Review: Ozone Reclassification State Implementation Plan Proposed Rule, OMB 1st Review Version","document_id":"EPA-HQ-OAR-2025-0201-0029"},{"title":"Final Rule: State Implementation Plan Submittal Deadlines and Implementation Requirements for Reclassified Nonattainment Areas Under the Ozone National Ambient Air Quality Standards, 90 FR 5651, January 17, 2025","document_id":"EPA-HQ-OAR-2025-0201-0027"},{"title":"Final Rule: Additional Air Quality Designations for the 2015 Ozone National Ambient Air Quality Standards, 83 FR 25776, June 4, 2018","document_id":"EPA-HQ-OAR-2025-0201-0025"}],"comments_count":32,"agency_id":"EPA","comments_url":"https://www.regulations.gov/docketBrowser?rpp=50&so=DESC&sb=postedDate&po=0&dct=PS&D=EPA-HQ-OAR-2025-0201","supporting_documents_count":36,"docket_id":"EPA-HQ-OAR-2025-0201","document_id":"EPA-HQ-OAR-2025-0201-0001","regulation_id_number":null,"title":"Reconsideration of State Implementation Plan Submittal Deadlines and Implementation Requirements for Reclassified Nonattainment Areas Under the Ozone National Ambient Air Quality Standards","checked_regulationsdotgov_at":"2026-07-16T08:55:03Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":35639,"subtype":null,"title":"Ozone Reclassification State Implementation Plan Rule","toc_doc":"Ozone Reclassification State Implementation Plan Rule","toc_subject":null,"topics":["Administrative practice and procedure","Air pollution control","Environmental protection","Incorporation by reference","Intergovernmental relations","Nitrogen oxides","Ozone","Reporting and recordkeeping requirements","Volatile organic compounds"],"type":"Proposed Rule","volume":91}