{"abstract":"This rule establishes initial air quality designations for certain areas in the United States, including areas of Indian country, for the 2015 primary and secondary national ambient air quality standards (NAAQS) for ozone. On November 6, 2017, the Environmental Protection Agency (EPA) designated about 85 percent of the country as attainment/unclassifiable and three counties as unclassifiable. In this action, the EPA is designating all remaining areas, except for eight counties in the San Antonio, Texas metropolitan area. Areas are being designated as either nonattainment, attainment/unclassifiable, or unclassifiable. Areas designated as nonattainment are also being classified by operation of law according to the severity of their air quality problems. The classification categories are Marginal, Moderate, Serious, Severe, and Extreme. In addition, five nonattainment areas in California are being voluntarily reclassified to a higher 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/2018/06/04/2018-11838.html","cfr_references":[{"chapter":null,"citation_url":null,"part":81,"title":40}],"citation":"83 FR 25776","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":["https://www.federalregister.gov/api/v1/documents/C1-2018-11838"],"dates":"The effective date of this rule is August 3, 2018.","disposition_notes":null,"docket_ids":["EPA-HQ-OAR-2017-0548","FRL-9977-72-OAR"],"dockets":[],"document_number":"2018-11838","effective_on":"2018-08-03","end_page":25848,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2018/06/04/2018-11838.xml","html_url":"https://www.federalregister.gov/documents/2018/06/04/2018-11838/additional-air-quality-designations-for-the-2015-ozone-national-ambient-air-quality-standards","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2018-11838?publication_date=2018-06-04","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2018-06-04/2018-11838/mods.xml","not_received_for_publication":null,"page_length":73,"page_views":{"count":4716,"last_updated":"2026-07-28 02:15:03 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2018-06-04/pdf/2018-11838.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2018-11838.pdf?1527857121","publication_date":"2018-06-04","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2018/06/04/2018-11838.txt","regulation_id_number_info":{"2060-AT94":{"issue":"201804","html_url":"https://www.federalregister.gov/regulations/2060-AT94/air-quality-designations-for-the-2015-ozone-naaqs-round-2","title":"Air Quality Designations for the 2015 Ozone NAAQS--Round 2","xml_url":"http://www.reginfo.gov/public/do/eAgendaViewRule?pubId=201804&RIN=2060-AT94&operation=OPERATION_EXPORT_XML","priority_category":"Substantive, Nonsignificant"}},"regulation_id_numbers":["2060-AT94"],"regulations_dot_gov_info":{"supporting_documents":[{"title":"Updated memo documenting technical data sources used in 2015 Air Quality Designations","document_id":"EPA-HQ-OAR-2017-0548-0435"},{"title":"Letter dated April 13, 2018, to Chuck Carr Brown, Secretary, Louisiana Department of Environmental Protection, from Anne Idsal, Regional Administrator, EPA Region 6, concurring on Louisiana's exceptional event demonstration for an event on September 14, 2017, affecting the Dutchtown ozone monitor","document_id":"EPA-HQ-OAR-2017-0548-0386"},{"title":"Letter dated March 13, 2018, from Guy Donaldson, USEPA Region 6, to Jason Meyers, Louisiana Department of Environmental Quality, indicating that Louisiana's 2017 ambient ozone data has met all the data quality requirements","document_id":"EPA-HQ-OAR-2017-0548-0384"},{"title":"Ohio: Cleveland and Columbus Nonattainment Areas, Final Area Designations for the 2015 Ozone National Ambient Air Quality Standards Technical Support Document (TSD)","document_id":"EPA-HQ-OAR-2017-0548-0381"},{"title":"3-6-2018 email from H. Kaloz Ohio EPA","document_id":"EPA-HQ-OAR-2017-0548-0367"},{"title":"York PA Missing Days Submittal","document_id":"EPA-HQ-OAR-2017-0548-0332"},{"title":"EPA concurrence with Washoe County Health District's submittals, dated November 10, 2016, and April 14, 2017, that exceedances on August 18,  19, and 21, 2015, and July 2-3, 2016, were caused by exceptional events due to wildfires","document_id":"EPA-HQ-OAR-2017-0548-0114"},{"title":"Submittal of “Exceptional Events Demonstration for Ozone Exceedances in Washoe County, Nevada from the Trailhead Fire on July 2 through July 4, 2016”","document_id":"EPA-HQ-OAR-2017-0548-0109"},{"title":"Texas-El Paso Exceptional Event, EPA response Letter to TCEQ","document_id":"EPA-HQ-OAR-2017-0548-0099"},{"title":"Ozone Monitor Status Report for 2014-2016","document_id":"EPA-HQ-OAR-2017-0548-0064"}],"comments_url":"https://www.regulations.gov/docketBrowser?rpp=50&so=DESC&sb=postedDate&po=0&dct=PS&D=EPA-HQ-OAR-2017-0548","supporting_documents_count":313,"docket_id":"EPA-HQ-OAR-2017-0548","regulation_id_number":null,"title":"Air Quality Designations and Classifications for the 2015 Ozone Standards","checked_regulationsdotgov_at":"2018-06-24T10:00:22Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":25776,"subtype":null,"title":"Additional Air Quality Designations for the 2015 Ozone National Ambient Air Quality Standards","toc_doc":"Additional Air Quality Designations for the 2015 Ozone National Ambient Air Quality Standards","toc_subject":null,"topics":["Air pollution control","Environmental protection","Wilderness areas"],"type":"Rule","volume":83}