{"abstract":"The State of Alaska (the State) submitted two State Implementation Plan (SIP) revisions to the Anchorage Transportation Control Program, Anchorage Carbon Monoxide (CO) Maintenance Plan. On September 20, 2011, the State submitted a SIP revision (2011 Submittal) that updated Anchorage's carbon monoxide (CO) motor vehicle emissions budget in the Anchorage CO maintenance area using the EPA's Motor Vehicle Emission Simulator model. On April 22, 2013, the State submitted a SIP revision (2013 Submittal) to satisfy the Clean Air Act (CAA) section 175A(b) requirement for a second 10-year maintenance plan for the Anchorage CO maintenance area in the form of a limited maintenance plan (LMP). This LMP addresses maintenance of the CO National Ambient Air Quality Standards for a second 10-year period, beyond redesignation of the area to attainment, through 2024. The EPA is proposing to approve both the 2013 Submittal and portions of the 2011 Submittal that are not superseded by the 2013 Submittal. The EPA is proposing to approve these SIP revisions because the State has demonstrated that they are consistent with the CAA.","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/2014/03/03/2014-04443.html","cfr_references":[{"chapter":null,"citation_url":null,"part":52,"title":40}],"citation":"79 FR 11747","comment_url":null,"comments_close_on":"2014-04-02","correction_of":null,"corrections":[],"dates":"Comments must be received on or before April 2, 2014.","disposition_notes":null,"docket_ids":["EPA-R10-OAR-2013-0421","FRL-9907-21-Region 10"],"dockets":[],"document_number":"2014-04443","effective_on":null,"end_page":11747,"executive_order_notes":null,"executive_order_number":null,"explanation":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2014/03/03/2014-04443.xml","html_url":"https://www.federalregister.gov/documents/2014/03/03/2014-04443/approval-and-promulgation-of-state-implementation-plans-alaska-anchorage-carbon-monoxide-limited","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2014-04443?publication_date=2014-03-03","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2014-03-03/2014-04443/mods.xml","not_received_for_publication":null,"page_length":1,"page_views":{"count":37,"last_updated":"2026-04-24 06:15:04 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2014-03-03/pdf/2014-04443.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2014-04443.pdf?1393595282","publication_date":"2014-03-03","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2014/03/03/2014-04443.txt","regulation_id_number_info":{},"regulation_id_numbers":[],"regulations_dot_gov_info":{"checked_regulationsdotgov_at":"2014-03-23T06:00:12Z"},"regulations_dot_gov_url":null,"significant":null,"signing_date":null,"start_page":11747,"subtype":null,"title":"Approval and Promulgation of State Implementation Plans: Alaska; Anchorage Carbon Monoxide Limited Maintenance Plan and State Implementation Plan Revisions","toc_doc":"Alaska; Anchorage Carbon Monoxide Limited Maintenance Plan and State Implementation Plan Revisions","toc_subject":"Air Quality State Implementation Plans; Approvals and Promulgations:","topics":[],"type":"Proposed Rule","volume":79}