{"abstract":"On May 13, 2005, and later clarified in a July 12, 2005, supplemental submittal, the Commonwealth of Kentucky submitted a request to redesignate the sulfur dioxide (SO<INF>2</INF>) nonattainment area of Boyd County to attainment of the National Ambient Air Quality Standards (NAAQS) for SO<INF>2</INF>. Boyd County is located within the Huntington-Ashland, West Virginia (WV)-Kentucky (KY)-Ohio (OH) Metropolitan Statistical Area (MSA), and the Boyd County SO<INF>2</INF> nonattainment area is comprised of the southern portion of Boyd County. The Commonwealth also submitted, as revisions to the Kentucky State Implementation Plan (SIP), a maintenance plan for the area and a source-specific SIP revision for the Calgon Carbon Corporation facility in Catlettsburg, Kentucky. EPA is approving the redesignation request for the Boyd County SO<INF>2</INF> nonattainment area and the maintenance plan for this area. The maintenance plan provides for the maintenance of the SO<INF>2</INF> NAAQS in Boyd County for the next ten years. EPA is also approving the source-specific SIP revision for the Calgon Carbon Corporation facility.","action":"Direct 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/2006/05/24/06-4820.html","cfr_references":[{"chapter":null,"citation_url":null,"part":52,"title":40},{"chapter":null,"citation_url":null,"part":81,"title":40}],"citation":"71 FR 29786","comment_url":null,"comments_close_on":"2006-06-23","correction_of":null,"corrections":[],"dates":"This rule is effective on July 24, 2006 without further notice, unless EPA receives adverse written comment by June 23, 2006. If EPA receives such comments, it will publish a timely withdrawal of the direct final rule in the Federal Register and inform the public that the rule will not take effect.","disposition_notes":null,"docket_ids":["R04-OAR-2005-KY-0002-200531(a)","FRL-8174-1"],"dockets":[],"document_number":"06-4820","effective_on":"2006-07-24","end_page":29792,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2006/05/24/06-4820.xml","html_url":"https://www.federalregister.gov/documents/2006/05/24/06-4820/approval-and-promulgation-of-implementation-plans-kentucky-redesignation-of-the-boyd-county-so2","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/06-4820?publication_date=2006-05-24","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2006-05-24/06-4820/mods.xml","not_received_for_publication":null,"page_length":7,"page_views":{"count":70,"last_updated":"2026-10-24 12:15:04 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2006-05-24/pdf/06-4820.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":null,"publication_date":"2006-05-24","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2006/05/24/06-4820.txt","regulation_id_number_info":{},"regulation_id_numbers":[],"regulations_dot_gov_info":{"checked_regulationsdotgov_at":"2011-11-12T19:25:35Z"},"regulations_dot_gov_url":null,"significant":null,"signing_date":null,"start_page":29786,"subtype":null,"title":"Approval and Promulgation of Implementation Plans; Kentucky; Redesignation of the Boyd County SO2 Nonattainment Area","toc_doc":"Kentucky","toc_subject":"Air quality implementation plans; approval and promulgation; various States; air quality planning purposes; designation of areas:","topics":["Air pollution control","Environmental protection","Intergovernmental relations","Reporting and recordkeeping requirements","Sulfur oxides","Wilderness areas"],"type":"Rule","volume":71}