{"abstract":"In accordance with the Clean Air Act (CAA), the Environmental Protection Agency (EPA) is redesignating the Southwest Indiana nonattainment area, which consists of a portion of Daviess County and a portion of Pike County (Veale Township in Daviess County and Washington Township in Pike County), to attainment for the 2010 primary, health- based 1-hour sulfur dioxide (SO<INF>2</INF>) National Ambient Air Quality Standard (NAAQS). EPA is also approving Indiana's maintenance plan for the Southwest Indiana SO<INF>2</INF> nonattainment area. Indiana submitted the request for approval of the Southwest Indiana nonattainment area's redesignation and maintenance plan on October 24, 2018, and supplemental information on August 25, 2020. EPA has previously approved Indiana's attainment plan for the Southwest Indiana area.","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/2021/03/02/2021-04195.html","cfr_references":[{"chapter":null,"citation_url":null,"part":"52","title":40},{"chapter":null,"citation_url":null,"part":"81","title":40}],"citation":"86 FR 12107","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"This final rule is effective on April 30, 2021.","disposition_notes":null,"docket_ids":["EPA-R05-OAR-2018-0732","FRL-10020-70-Region 5"],"dockets":[],"document_number":"2021-04195","effective_on":"2021-04-30","end_page":12109,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2021/03/02/2021-04195.xml","html_url":"https://www.federalregister.gov/documents/2021/03/02/2021-04195/designation-of-areas-for-air-quality-planning-purposes-indiana-redesignation-of-the-southwest","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2021-04195?publication_date=2021-03-02","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2021-03-02/2021-04195/mods.xml","not_received_for_publication":null,"page_length":3,"page_views":{"count":329,"last_updated":"2026-07-26 10:15:03 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2021-03-02/pdf/2021-04195.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2021-04195.pdf?1614606327","publication_date":"2021-03-02","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2021/03/02/2021-04195.txt","regulation_id_number_info":{},"regulation_id_numbers":[],"regulations_dot_gov_info":{"supporting_documents":[{"title":"Indiana - SO2 Southwest Indiana Clarification of Maintenance Plan Triggers","document_id":"EPA-R05-OAR-2018-0732-0004"},{"title":"Southwest Indiana, Partial Daviess County and Partial Pike County 2010 SO2 Redesignation and Maintenance Plan, 10/24/2018 submittal","document_id":"EPA-R05-OAR-2018-0732-0002"}],"comments_count":0,"agency_id":"EPA","comments_url":"https://www.regulations.gov/docketBrowser?rpp=50&so=DESC&sb=postedDate&po=0&dct=PS&D=EPA-R05-OAR-2018-0732","supporting_documents_count":2,"docket_id":"EPA-R05-OAR-2018-0732","document_id":"EPA-R05-OAR-2018-0732-0003","regulation_id_number":null,"title":"Southwest Indiana, Partial Daviess County and Partial Pike County 2010 SO2 Redesignation and Maintenance Plan (Veale Township, Daviess County, and Washington Township, Pike County)","checked_regulationsdotgov_at":"2021-03-03T04:30:12Z"},"regulations_dot_gov_url":null,"significant":null,"signing_date":null,"start_page":12107,"subtype":null,"title":"Designation of Areas for Air Quality Planning Purposes; Indiana; Redesignation of the Southwest Indiana Sulfur Dioxide Nonattainment Area","toc_doc":"Indiana; Redesignation of the Southwest Indiana Sulfur Dioxide Nonattainment Area","toc_subject":"Air Quality State Implementation Plans; Approvals and Promulgations:\n","topics":["Air pollution control","Environmental protection","Incorporation by reference","Intergovernmental relations","Reporting and recordkeeping requirements","Sulfur oxides","Wilderness areas"],"type":"Rule","volume":86}