{"abstract":"In this final rule, the EPA is establishing the air quality thresholds that define the classifications assigned to all nonattainment areas for the 2015 ozone national ambient air quality standards (NAAQS) (the \"2015 ozone NAAQS\") promulgated on October 1, 2015. This final rule also establishes the timing of attainment dates for each nonattainment area classification.","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/2018/03/09/2018-04810.html","cfr_references":[{"chapter":null,"citation_url":null,"part":51,"title":40}],"citation":"83 FR 10376","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"This final rule is effective on May 8, 2018.","disposition_notes":null,"docket_ids":["EPA-HQ-OAR-2016-0202","FRL-9975-23-OAR"],"dockets":[],"document_number":"2018-04810","effective_on":"2018-05-08","end_page":10383,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2018/03/09/2018-04810.xml","html_url":"https://www.federalregister.gov/documents/2018/03/09/2018-04810/implementation-of-the-2015-national-ambient-air-quality-standards-for-ozone-nonattainment-area","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2018-04810?publication_date=2018-03-09","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2018-03-09/2018-04810/mods.xml","not_received_for_publication":null,"page_length":8,"page_views":{"count":1537,"last_updated":"2026-07-28 02:15:03 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2018-03-09/pdf/2018-04810.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2018-04810.pdf?1520516736","publication_date":"2018-03-09","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2018/03/09/2018-04810.txt","regulation_id_number_info":{"2060-AT41":{"issue":"201804","html_url":"https://www.federalregister.gov/regulations/2060-AT41/implementation-of-the-2015-national-ambient-air-quality-standards-for-ozone-nonattainment-area-class","title":"Implementation of the 2015 National Ambient Air Quality Standards for Ozone: Nonattainment Area Classifications Approach","xml_url":"http://www.reginfo.gov/public/do/eAgendaViewRule?pubId=201804&RIN=2060-AT41&operation=OPERATION_EXPORT_XML","priority_category":"Substantive, Nonsignificant"}},"regulation_id_numbers":["2060-AT41"],"regulations_dot_gov_info":{"supporting_documents":[{"title":"2015 Ozone SIP Requirements Rule RTC 10-31-18","document_id":"EPA-HQ-OAR-2016-0202-0133"},{"title":"Guidance: Draft Technical Guidance for Demonstration of Interprecursor trading (IPT) for Ozone in the Nonattainment New Source Review Program, Air Quality Modeling Group, October 26, 2018","document_id":"EPA-HQ-OAR-2016-0202-0132"},{"title":"Interagency Review Comment : Summary of Interagency Working Comments on Draft Language Under E.O .12866/13563 Interagency Review. Final 2015 Ozone NAAQS Implementation Rule, September 26, 2018","document_id":"EPA-HQ-OAR-2016-0202-0130"},{"title":"Legal Document: 882 F.3d 1138, South Coast Air Quality Management District, Petitioner, v., Environmental Protection Agency, et al., Respondents, National Environmental Development Association's Clean Air Regulatory Project, et. al., Intervenors. United States Court of Appeals, District of Columbia Circuit. Argued September 14, 2017, Decided, February 16, 2018","document_id":"EPA-HQ-OAR-2016-0202-0126"},{"title":"Projected ozone design values based on updated EPA's updated 2023 modeling 2-26-18","document_id":"EPA-HQ-OAR-2016-0202-0123"},{"title":"EPA Public Hearing 12JAN17 Transcript","document_id":"EPA-HQ-OAR-2016-0202-0119"},{"title":"Technical Support Document -  DRAFT Demonstrating NOx Emission Reduction Benefits of State-Level Renewable Energy and Energy Efficiency Policies, Office of Air Quality Planning and Standards, November 17, 2016","document_id":"EPA-HQ-OAR-2016-0202-0035"},{"title":"INTERAGENCY REVIEW:  Corrected version accepting interagency comments on EO12866 Review, Proposed Rule, Implementation of the 2015 National Ambient Air Quality Standards for Ozone: Nonattainment Area Classifications and State Implementation Plan Requirements, September 28, 2016","document_id":"EPA-HQ-OAR-2016-0202-0033"},{"title":"GUIDANCE: DRAFT Technical Guidance for demonstration of Interprecursor trading (IPT) for Ozone in the Nonattainment New Source Review Program, Tyler Fox, Air Quality Modeling Group, October 4, 2016","document_id":"EPA-HQ-OAR-2016-0202-0029"},{"title":"Proposed Ozone NAAQS Implementation (Classifications & SIP Requirements Rule: Briefing for the Office of Management and Budget, Air Quality Policy Division, Bob Lingard, August 8, 2016","document_id":"EPA-HQ-OAR-2016-0202-0027"}],"regulatory_plan":{"html_url":"https://www.federalregister.gov/regulations/2060-AS82/implementation-of-the-2015-national-ambient-air-quality-standards-for-ozone-state-implementation-pla","title":"Implementation of the 2015 National Ambient Air Quality Standards for Ozone: State Implementation Plan Requirements"},"comments_url":"https://www.regulations.gov/docketBrowser?rpp=50&so=DESC&sb=postedDate&po=0&dct=PS&D=EPA-HQ-OAR-2016-0202","supporting_documents_count":48,"docket_id":"EPA-HQ-OAR-2016-0202","regulation_id_number":"2060-AS82","title":"Implementation of the 2015 National Ambient Air Quality Standards for Ozone: Nonattainment Area Classifications and State Implementation Plan Requirements","checked_regulationsdotgov_at":"2018-03-29T10:00:15Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":10376,"subtype":null,"title":"Implementation of the 2015 National Ambient Air Quality Standards for Ozone: Nonattainment Area Classifications Approach","toc_doc":"Nonattainment Area Classifications Approach","toc_subject":"National Ambient Air Quality Standards for Ozone:","topics":["Air pollution control","Environmental protection","Intergovernmental relations","Ozone","Particulate matter","Transportation","Volatile organic compounds"],"type":"Rule","volume":83}