{"abstract":"The Environmental Protection Agency (EPA) is withdrawing its proposed approval of the request to redesignate the Kentucky portion of the Louisville, Kentucky-Indiana, 2015 8-hour ozone nonattainment area (hereinafter referred to as the \"Louisville, KY-IN Area\" or \"Area\") to attainment for the 2015 8-hour ozone National Ambient Air Quality Standards (NAAQS or standards). EPA is withdrawing its April 18, 2023, proposed approval and is now proposing to deny Kentucky's request to redesignate the Kentucky portion of the Area from nonattainment to attainment, based on the Area's violation of the NAAQS. EPA is taking no action at this time on Kentucky's maintenance plan, including the regional motor vehicle emission budgets for nitrogen oxides (NO<INF>X</INF>) and volatile organic compounds (VOC) for the years of 2019 and 2035, submitted with Kentucky's redesignation request for the Louisville, KY-IN Area. The redesignation request and maintenance plan state implementation plan (SIP) revision were submitted by the Commonwealth of Kentucky, through the Kentucky Energy and Environment Cabinet (Cabinet), Division of Air Quality (DAQ), on September 6, 2022.","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/2025/01/03/2024-31617.html","cfr_references":[{"chapter":null,"citation_url":null,"part":81,"title":40}],"citation":"90 FR 294","comment_url":null,"comments_close_on":"2025-02-03","correction_of":null,"corrections":[],"dates":"Comments must be received on or before February 3, 2025.","disposition_notes":null,"docket_ids":["EPA-R04-OAR-2022-0789","FRL-10888-03-R4"],"dockets":[{"supporting_documents":[{"title":"Seitz 1995 Resonable Further Progress Attainment Demonstration and Related Requirements","document_id":"EPA-R04-OAR-2022-0789-0057"},{"title":"2023 Louisville APCD EED_061825_FINAL","document_id":"EPA-R04-OAR-2022-0789-0055"},{"title":"o3_designvalues_2021_2023_final_06_04_24","document_id":"EPA-R04-OAR-2022-0789-0054"},{"title":"Laxton 1990 Ozone and Carbon Monoxide Design Value Calculations","document_id":"EPA-R04-OAR-2022-0789-0053"},{"title":"Ozone_Watch_20260226_085627","document_id":"EPA-R04-OAR-2022-0789-0052"},{"title":"Shapiro 1993 SIP Requirements for Areas Submitting Requests for Redesignation to Attainment of the Ozone and CO NAAQS","document_id":"EPA-R04-OAR-2022-0789-0050"},{"title":"Initial Notification Table - Louisville Ozone EE","document_id":"EPA-R04-OAR-2022-0789-0049"},{"title":"Ozone_Watch_20240830_080543.454374","document_id":"EPA-R04-OAR-2022-0789-0045"},{"title":"sitedv_20221213","document_id":"EPA-R04-OAR-2022-0789-0042"},{"title":"o3_designvalues_2022_2024_final_05_28_25","document_id":"EPA-R04-OAR-2022-0789-0037"}],"agency_name":"EPA","documents":[{"comment_count":7,"comment_start_date":"2025-01-03","updated_at":"2025-02-05T00:55:59.007-05:00","comment_url":"https://www.regulations.gov/commenton/EPA-R04-OAR-2022-0789-0014","allow_late_comments":false,"id":"EPA-R04-OAR-2022-0789-0014","comment_end_date":"2025-02-04","regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":45,"id":"EPA-R04-OAR-2022-0789","title":"Air Quality Designations; KY; Redesignation of the Kentucky Portion of the Louisville, KY-IN 2015 8-Hour Ozone Nonattainment Area to Attainment"}],"document_number":"2024-31617","effective_on":null,"end_page":297,"executive_order_notes":null,"executive_order_number":null,"explanation":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2025/01/03/2024-31617.xml","html_url":"https://www.federalregister.gov/documents/2025/01/03/2024-31617/air-quality-designations-ky-redesignation-of-the-kentucky-portion-of-the-louisville-ky-in-2015","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2024-31617?publication_date=2025-01-03","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2025-01-03/2024-31617/mods.xml","not_received_for_publication":null,"page_length":4,"page_views":{"count":380,"last_updated":"2026-04-04 12:15:04 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2025-01-03/pdf/2024-31617.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2024-31617.pdf?1735825521","publication_date":"2025-01-03","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2025/01/03/2024-31617.txt","regulation_id_number_info":{},"regulation_id_numbers":[],"regulations_dot_gov_info":{"supporting_documents":[{"title":"o3_designvalues_2021_2023_final_06_04_24","document_id":"EPA-R04-OAR-2022-0789-0013"},{"title":"Louisville KY 2015 Ozone Redesignation Request Completeness  Determination","document_id":"EPA-R04-OAR-2022-0789-0008"},{"title":"Appendix C - 2019 Emissions Inventory (District)","document_id":"EPA-R04-OAR-2022-0789-0007"},{"title":"2022-09-02 LOU Redesignation Request-FINAL","document_id":"EPA-R04-OAR-2022-0789-0006"},{"title":"Appendix E - COVID-19 Related Traffic Impact Data Prepared by KIPDA","document_id":"EPA-R04-OAR-2022-0789-0005"},{"title":"2022-8-17 Louisville Cover Letter","document_id":"EPA-R04-OAR-2022-0789-0004"},{"title":"Appendix A - Full Emissions Inventory and Projections","document_id":"EPA-R04-OAR-2022-0789-0003"},{"title":"Appendix J - VMT VOCs and NOx_Conformity_Trends from 2008","document_id":"EPA-R04-OAR-2022-0789-0002"},{"title":"Appendix D - 2019 Emissions Inventory (Division)","document_id":"EPA-R04-OAR-2022-0789-0001"}],"comments_count":7,"agency_id":"EPA","comments_url":"https://www.regulations.gov/docketBrowser?rpp=50&so=DESC&sb=postedDate&po=0&dct=PS&D=EPA-R04-OAR-2022-0789","supporting_documents_count":9,"docket_id":"EPA-R04-OAR-2022-0789","document_id":"EPA-R04-OAR-2022-0789-0014","regulation_id_number":null,"title":"Air Quality Designations; KY; Redesignation of the Kentucky Portion of the Louisville, KY-IN 2015 8-Hour Ozone Nonattainment Area to Attainment","checked_regulationsdotgov_at":"2025-02-06T01:55:04Z"},"regulations_dot_gov_url":null,"significant":null,"signing_date":null,"start_page":294,"subtype":null,"title":"Air Quality Designations; KY; Redesignation of the Kentucky Portion of the Louisville, KY-IN 2015 8-Hour Ozone Nonattainment Area to Attainment","toc_doc":"Kentucky; Redesignation of the Kentucky Portion of the Louisville, KY-IN 2015 8-Hour Ozone Nonattainment Area to Attainment","toc_subject":"Air Quality Designations","topics":["Air pollution control","Environmental protection","National parks","Wilderness areas"],"type":"Proposed Rule","volume":90}