{"abstract":"The Environmental Protection Agency (EPA) is proposing to approve a state implementation plan (SIP) revision submitted by the Commonwealth of Virginia (the Commonwealth or Virginia). This revision pertains to the Commonwealth's plan, submitted by the Virginia Department of Environmental Quality (VADEQ), for maintaining the 1997 8-hour ozone national ambient air quality standard (NAAQS) (referred to as the 1997 ozone NAAQS) in the Madison & Page Counties (Shenandoah NP), VA, Area (Shenandoah NP Area or Area) for the second 10-year maintenance period. This action is being taken under the Clean Air Act (CAA).","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/2026/08/14/2026-16575.html","cfr_references":[{"chapter":null,"citation_url":null,"part":"52","title":40}],"citation":"91 FR 52604","comment_url":null,"comments_close_on":"2026-09-14","correction_of":null,"corrections":[],"dates":"Written comments must be received on or before September 14, 2026.","disposition_notes":null,"docket_ids":["EPA-R03-OAR-2025-3820","FRL-13143-01-R3"],"dockets":[{"supporting_documents":[{"title":"VADEQ - 2nd Maintenance Plan - 1997 Ozone NAAQS - Shenandoah NP Area - Signed Transmittal Letter","document_id":"EPA-R03-OAR-2025-3820-0006"},{"title":"VADEQ - 2nd Maintenance Plan - 1997 Ozone NAAQS - Shenandoah NP Area - Public Participation Record","document_id":"EPA-R03-OAR-2025-3820-0005"},{"title":"VADEQ - 2nd Maintenance Plan - 1997 Ozone NAAQS - Shenandoah NP Area - Notice of Public Comment Opportunity","document_id":"EPA-R03-OAR-2025-3820-0004"},{"title":"VADEQ - 2nd Maintenance Plan - 1997 Ozone NAAQS - Shenandoah NP Area - Certification of Public Participation Activities","document_id":"EPA-R03-OAR-2025-3820-0003"},{"title":"VADEQ - 2nd Maintenance Plan - 1997 Ozone NAAQS - Shenandoah NP Area - SIP Submittal","document_id":"EPA-R03-OAR-2025-3820-0002"}],"agency_name":"EPA","documents":[{"comment_count":2,"comment_start_date":"2026-08-14","updated_at":"2026-09-15T00:09:29.515-04:00","comment_url":"https://www.regulations.gov/commenton/EPA-R03-OAR-2025-3820-0001","allow_late_comments":false,"id":"EPA-R03-OAR-2025-3820-0001","comment_end_date":"2026-09-15","regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":5,"id":"EPA-R03-OAR-2025-3820","title":"VA Madison and Page Counties (Shenandoah NP) 1997 Ozone 2nd Limited Maintenance Plan"}],"document_number":"2026-16575","effective_on":null,"end_page":52609,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2026/08/14/2026-16575.xml","html_url":"https://www.federalregister.gov/documents/2026/08/14/2026-16575/air-plan-approval-virginia-1997-8-hour-ozone-national-ambient-air-quality-standard-second","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2026-16575?publication_date=2026-08-14","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2026-08-14/2026-16575/mods.xml","not_received_for_publication":null,"page_length":6,"page_views":{"count":136,"last_updated":"2026-09-22 06:15:08 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2026-08-14/pdf/2026-16575.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2026-16575.pdf?1786625110","publication_date":"2026-08-14","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2026/08/14/2026-16575.txt","regulation_id_number_info":{},"regulation_id_numbers":[],"regulations_dot_gov_info":{"supporting_documents":[{"title":"VADEQ - 2nd Maintenance Plan - 1997 Ozone NAAQS - Shenandoah NP Area - Signed Transmittal Letter","document_id":"EPA-R03-OAR-2025-3820-0006"},{"title":"VADEQ - 2nd Maintenance Plan - 1997 Ozone NAAQS - Shenandoah NP Area - Public Participation Record","document_id":"EPA-R03-OAR-2025-3820-0005"},{"title":"VADEQ - 2nd Maintenance Plan - 1997 Ozone NAAQS - Shenandoah NP Area - Notice of Public Comment Opportunity","document_id":"EPA-R03-OAR-2025-3820-0004"},{"title":"VADEQ - 2nd Maintenance Plan - 1997 Ozone NAAQS - Shenandoah NP Area - Certification of Public Participation Activities","document_id":"EPA-R03-OAR-2025-3820-0003"},{"title":"VADEQ - 2nd Maintenance Plan - 1997 Ozone NAAQS - Shenandoah NP Area - SIP Submittal","document_id":"EPA-R03-OAR-2025-3820-0002"}],"comments_count":2,"agency_id":"EPA","comments_url":"https://www.regulations.gov/docketBrowser?rpp=50&so=DESC&sb=postedDate&po=0&dct=PS&D=EPA-R03-OAR-2025-3820","supporting_documents_count":5,"docket_id":"EPA-R03-OAR-2025-3820","document_id":"EPA-R03-OAR-2025-3820-0001","regulation_id_number":null,"title":"VA Madison and Page Counties (Shenandoah NP) 1997 Ozone 2nd Limited Maintenance Plan","checked_regulationsdotgov_at":"2026-09-15T04:09:28Z"},"regulations_dot_gov_url":null,"significant":null,"signing_date":null,"start_page":52604,"subtype":null,"title":"Air Plan Approval; Virginia; 1997 8-Hour Ozone National Ambient Air Quality Standard Second Maintenance Plan for the Madison and Page Counties (Shenandoah National Park) Area","toc_doc":"Virginia; 1997 8-Hour Ozone National Ambient Air Quality Standard Second Maintenance Plan for the Madison and Page Counties (Shenandoah National Park) Area","toc_subject":"Air Quality State Implementation Plans; Approvals and Promulgations","topics":["Air pollution control","Environmental protection","Incorporation by reference","Nitrogen dioxide","Ozone","Volatile organic compounds"],"type":"Proposed Rule","volume":91}