{"abstract":"The U.S. Environmental Protection Agency (EPA) is proposing to revise the EPA's regulatory definition of volatile organic compounds (VOC) under the Clean Air Act (CAA). This action proposes to add (Z)-1- chloro-2,3,3,3-tetrafluoropropene (also known as HCFO-1224yd(Z); CAS number 111512-60-8) to the list of compounds excluded from the regulatory definition on the basis that this compound makes a negligible contribution to tropospheric ozone (O<INF>3</INF>) formation.","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/2024/11/12/2024-25971.html","cfr_references":[{"chapter":null,"citation_url":null,"part":"51","title":40}],"citation":"89 FR 88940","comment_url":null,"comments_close_on":"2025-01-13","correction_of":null,"corrections":[],"dates":"Comments must be received on or before January 13, 2025.","disposition_notes":null,"docket_ids":["EPA-HQ-OAR-2023-0295","FRL-10823-01-OAR"],"dockets":[{"supporting_documents":[],"agency_name":"EPA","documents":[{"comment_count":3,"comment_start_date":"2024-11-12","updated_at":"2025-01-14T00:01:16.425-05:00","comment_url":"https://www.regulations.gov/commenton/EPA-HQ-OAR-2023-0295-0001","allow_late_comments":false,"id":"EPA-HQ-OAR-2023-0295-0001","comment_end_date":"2025-01-14","regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":0,"id":"EPA-HQ-OAR-2023-0295","title":"Air Quality: Revision to the Regulatory Definition of Volatile Organic Compounds - Exclusion of (Z)-1-Chloro-2,3,3,3,-Tetrafluoropropene (HCFO-1224yd(Z)"}],"document_number":"2024-25971","effective_on":null,"end_page":88947,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2024/11/12/2024-25971.xml","html_url":"https://www.federalregister.gov/documents/2024/11/12/2024-25971/air-quality-revision-to-the-regulatory-definition-of-volatile-organic-compounds-exclusion-of","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2024-25971?publication_date=2024-11-12","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2024-11-12/2024-25971/mods.xml","not_received_for_publication":null,"page_length":8,"page_views":{"count":500,"last_updated":"2026-07-28 12:15:07 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2024-11-12/pdf/2024-25971.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2024-25971.pdf?1731073559","publication_date":"2024-11-12","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2024/11/12/2024-25971.txt","regulation_id_number_info":{"2060-AW00":{"issue":"202504","html_url":"https://www.federalregister.gov/regulations/2060-AW00/air-quality-revision-to-the-regulatory-definition-of-volatile-organic-compounds-exclusion-of-z-1-chl","title":"Air Quality: Revision to the Regulatory Definition of Volatile Organic Compounds - Exclusion of (Z)-1-chloro-2,3,3,3-tetrafluoropropene (HCFO-1224yd(Z))","xml_url":"http://www.reginfo.gov/public/do/eAgendaViewRule?pubId=202504&RIN=2060-AW00&operation=OPERATION_EXPORT_XML","priority_category":"Substantive, Nonsignificant"}},"regulation_id_numbers":["2060-AW00"],"regulations_dot_gov_info":{"supporting_documents":[],"regulatory_plan":{"html_url":"https://www.federalregister.gov/regulations/2060-AW00/air-quality-revision-to-the-regulatory-definition-of-volatile-organic-compounds-exclusion-of-z-1-chl","title":"Air Quality: Revision to the Regulatory Definition of Volatile Organic Compounds - Exclusion of (Z)-1-chloro-2,3,3,3-tetrafluoropropene (HCFO-1224yd(Z))"},"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-HQ-OAR-2023-0295","supporting_documents_count":0,"docket_id":"EPA-HQ-OAR-2023-0295","document_id":"EPA-HQ-OAR-2023-0295-0001","regulation_id_number":"2060-AW00","title":"Air Quality: Revision to the Regulatory Definition of Volatile Organic Compounds - Exclusion of (Z)-1-Chloro-2,3,3,3,-Tetrafluoropropene (HCFO-1224yd(Z)","checked_regulationsdotgov_at":"2025-01-15T02:00:11Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":88940,"subtype":null,"title":"Air Quality: Revision to the Regulatory Definition of Volatile Organic Compounds-Exclusion of (Z)-1-chloro-2,3,3,3-tetrafluoropropene (HCFO-1224yd(Z))","toc_doc":"Definition of Volatile Organic CompoundsExclusion of (Z)-1-chloro-2,3,3,3-tetrafluoropropene (HCFO-1224yd(Z))","toc_subject":"Air Quality","topics":["Administrative practice and procedure","Air pollution control","Environmental protection","Ozone","Reporting and recordkeeping requirements","Volatile organic compounds"],"type":"Proposed Rule","volume":89}