{"abstract":"In this action, the EPA is promulgating a redesignation request and State Implementation Plan (SIP) revision submitted by the state of Missouri on June 13, 1997. Additional material was sent on June 15, 1998. The request is to redesignate the portion of the St. Louis metropolitan area, currently a carbon monoxide (CO) nonattainment area, to a CO attainment area. Under the Clean Air Act (CAA) as amended in 1990, a redesignation to attainment may be promulgated if the state demonstrates full compliance with the redesignation requirements set forth in section 107(d)(3)(E). In this action, the EPA is also approving Missouri's SIP revision regarding the state's CO maintenance plan.","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/1999/01/26/99-1332.html","cfr_references":[{"chapter":null,"citation_url":null,"part":52,"title":40},{"chapter":null,"citation_url":null,"part":81,"title":40}],"citation":"64 FR 3855","comment_url":null,"comments_close_on":"1999-02-25","correction_of":null,"corrections":[],"dates":"This direct final rule is effective on March 29, 1999 without further notice, unless the EPA receives adverse comment by February 25, 1999. If adverse comment is received, the EPA 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":["MO 043-1043(a)","FRL-6220-1"],"dockets":[],"document_number":"99-1332","effective_on":"1999-03-29","end_page":3861,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":null,"html_url":"https://www.federalregister.gov/documents/1999/01/26/99-1332/approval-and-promulgation-of-implementation-plans-designation-of-areas-for-air-quality-planning","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/99-1332?publication_date=1999-01-26","mods_url":"https://www.govinfo.gov/metadata/granule/FR-1999-01-26/99-1332/mods.xml","not_received_for_publication":null,"page_length":7,"page_views":{"count":22,"last_updated":"2026-10-25 04:15:05 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-1999-01-26/pdf/99-1332.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":null,"publication_date":"1999-01-26","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/1999/01/26/99-1332.txt","regulation_id_number_info":{},"regulation_id_numbers":[],"regulations_dot_gov_info":{"checked_regulationsdotgov_at":"2011-09-20T23:27:46Z"},"regulations_dot_gov_url":null,"significant":null,"signing_date":null,"start_page":3855,"subtype":null,"title":"Approval and Promulgation of Implementation Plans; Designation of Areas for Air Quality Planning Purposes; State of Missouri","toc_doc":null,"toc_subject":null,"topics":[],"type":"Rule","volume":64}