{"abstract":"Based on the Environmental Protection Agency's (EPA's) review of the air quality criteria addressing human health effects and the primary national ambient air quality standard (NAAQS) for sulfur oxides (SO<INF>X</INF>), the EPA is proposing to retain the current standard, without revision.","action":"Proposed action.","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/2018/06/08/2018-12061.html","cfr_references":[{"chapter":null,"citation_url":null,"part":50,"title":40}],"citation":"83 FR 26752","comment_url":null,"comments_close_on":"2018-07-23","correction_of":null,"corrections":[],"dates":"Comments must be received on or before July 23, 2018.","disposition_notes":null,"docket_ids":["EPA-HQ-OAR-2013-0566","FRL-9979-00-OAR"],"dockets":[{"supporting_documents":[{"title":"U.S. EPA. (2018c). Integrated Science Assessment (ISA) for Particulate Matter (External Review Draft). National Center for Environmental Assessment-RTP Division, Office of Research and Development, Research Triangle Park, NC, EPA/600/R-18/179, October 201","document_id":"EPA-HQ-OAR-2013-0566-0219"},{"title":"U.S. DHEW. (1969). Air Quality Criteria For Sulfur Oxides. National Center for Air Pollution Control, Consumer Protection and Environmental Health Service, Public Health Service, U.S. Department of Health, Education, and Welfare, Washington, DC, National ","document_id":"EPA-HQ-OAR-2013-0566-0215"},{"title":"U.S. DHEW. (1967). Air Quality Criteria for Sulfur Oxides. National Center for Air Pollution Control, Bureau of Disease Prevention and Environmental Control, Public Health Service, U.S. Department of Health, Education, and Welfare, Washington, DC, Public ","document_id":"EPA-HQ-OAR-2013-0566-0214"},{"title":"U.S. EPA. (2010). 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International Programme on Chemical Safety, World Health Organization, Geneva, Switzerland","document_id":"EPA-HQ-OAR-2013-0566-0159"}],"agency_name":"EPA","documents":[{"comment_count":34,"comment_start_date":"2018-06-08","updated_at":"2023-03-01T01:39:13.061-05:00","comment_url":"https://www.regulations.gov/commenton/EPA-HQ-OAR-2013-0566-0047","allow_late_comments":null,"id":"EPA-HQ-OAR-2013-0566-0047","comment_end_date":"2018-08-10","regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":149,"id":"EPA-HQ-OAR-2013-0566","title":"Sulfur Dioxide National Ambient Air Quality Standard"}],"document_number":"2018-12061","effective_on":null,"end_page":26785,"executive_order_notes":null,"executive_order_number":null,"explanation":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2018/06/08/2018-12061.xml","html_url":"https://www.federalregister.gov/documents/2018/06/08/2018-12061/review-of-the-primary-national-ambient-air-quality-standards-for-sulfur-oxides","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2018-12061?publication_date=2018-06-08","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2018-06-08/2018-12061/mods.xml","not_received_for_publication":null,"page_length":34,"page_views":{"count":1761,"last_updated":"2026-04-04 12:15:04 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2018-06-08/pdf/2018-12061.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2018-12061.pdf?1528375518","publication_date":"2018-06-08","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2018/06/08/2018-12061.txt","regulation_id_number_info":{"2060-AT68":{"issue":"201810","html_url":"https://www.federalregister.gov/regulations/2060-AT68/review-of-the-primary-national-ambient-air-quality-standards-for-sulfur-oxides","title":"Review of the Primary National Ambient Air Quality Standards for Sulfur Oxides","xml_url":"http://www.reginfo.gov/public/do/eAgendaViewRule?pubId=201810&RIN=2060-AT68&operation=OPERATION_EXPORT_XML","priority_category":"Other Significant"}},"regulation_id_numbers":["2060-AT68"],"regulations_dot_gov_info":{"supporting_documents":[{"title":"U.S. EPA. 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Responses to Significant Comments on the 2009 Proposed Rule on the Primary National Ambient Air Quality Standards for Sulfur Dioxides. 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Part 1: Guidance Document on Characterizing and Communicating Uncertainty in Exposure Assessment. 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