{"abstract":"The Environmental Protection Agency (EPA) is proposing to approve a revision to the South Coast Air Quality Management District (SCAQMD) portion of the California State Implementation Plan (SIP) concerning a rule submitted to address section 185 of the Clean Air Act (CAA or \"Act\") with respect to the 1997 and 2008 8-hour ozone National Ambient Air Quality Standards (NAAQS or \"standard\"). We are taking comments on this proposal and plan to follow with a final action.","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/2025/07/31/2025-14528.html","cfr_references":[{"chapter":null,"citation_url":null,"part":52,"title":40}],"citation":"90 FR 36003","comment_url":null,"comments_close_on":"2025-09-02","correction_of":null,"corrections":[],"dates":"Comments must be received on or before September 2, 2025.","disposition_notes":null,"docket_ids":["EPA-R09-OAR-2025-0199","FRL-12749-01-R9"],"dockets":[{"supporting_documents":[{"title":"B. Supporting Materials - TSD for South Coast Rule 317.1","document_id":"EPA-R09-OAR-2025-0199-0005"},{"title":"C. EPA Guidance Documents, Policies, and Rulemakings","document_id":"EPA-R09-OAR-2025-0199-0004"},{"title":"B. Supporting Materials","document_id":"EPA-R09-OAR-2025-0199-0003"},{"title":"A. SIP Submittal Documents","document_id":"EPA-R09-OAR-2025-0199-0002"}],"agency_name":"EPA","documents":[{"comment_count":3,"comment_start_date":"2025-07-31","updated_at":"2025-09-03T00:04:14.340-04:00","comment_url":"https://www.regulations.gov/commenton/EPA-R09-OAR-2025-0199-0001","allow_late_comments":false,"id":"EPA-R09-OAR-2025-0199-0001","comment_end_date":"2025-09-03","regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":4,"id":"EPA-R09-OAR-2025-0199","title":"Air Plan Approval; California; South Coast Air Quality Management District"}],"document_number":"2025-14528","effective_on":null,"end_page":36005,"executive_order_notes":null,"executive_order_number":null,"explanation":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2025/07/31/2025-14528.xml","html_url":"https://www.federalregister.gov/documents/2025/07/31/2025-14528/air-plan-approval-california-south-coast-air-quality-management-district","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2025-14528?publication_date=2025-07-31","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2025-07-31/2025-14528/mods.xml","not_received_for_publication":null,"page_length":3,"page_views":{"count":218,"last_updated":"2026-04-04 18:15:03 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2025-07-31/pdf/2025-14528.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2025-14528.pdf?1753879516","publication_date":"2025-07-31","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2025/07/31/2025-14528.txt","regulation_id_number_info":{},"regulation_id_numbers":[],"regulations_dot_gov_info":{"supporting_documents":[{"title":"B. Supporting Materials - TSD for South Coast Rule 317.1","document_id":"EPA-R09-OAR-2025-0199-0005"},{"title":"C. EPA Guidance Documents, Policies, and Rulemakings","document_id":"EPA-R09-OAR-2025-0199-0004"},{"title":"B. Supporting Materials","document_id":"EPA-R09-OAR-2025-0199-0003"},{"title":"A. SIP Submittal Documents","document_id":"EPA-R09-OAR-2025-0199-0002"}],"comments_count":3,"agency_id":"EPA","comments_url":"https://www.regulations.gov/docketBrowser?rpp=50&so=DESC&sb=postedDate&po=0&dct=PS&D=EPA-R09-OAR-2025-0199","supporting_documents_count":4,"docket_id":"EPA-R09-OAR-2025-0199","document_id":"EPA-R09-OAR-2025-0199-0001","regulation_id_number":null,"title":"Air Plan Approval; California; South Coast Air Quality Management District","checked_regulationsdotgov_at":"2025-09-03T04:04:13Z"},"regulations_dot_gov_url":null,"significant":null,"signing_date":null,"start_page":36003,"subtype":null,"title":"Air Plan Approval; California; South Coast Air Quality Management District","toc_doc":"California; South Coast Air Quality Management District","toc_subject":"Air Quality State Implementation Plans; Approvals and Promulgations","topics":["Air pollution control","Environmental protection","Incorporation by reference","Intergovernmental relations","Nitrogen oxides","Ozone","Reporting and recordkeeping requirements","Volatile organic compounds"],"type":"Proposed Rule","volume":90}