{"abstract":"The Environmental Protection Agency (EPA) is partially approving and partially disapproving the regional haze state implementation plan (SIP) revision submitted by Arizona on August 15, 2022 (\"2022 Arizona Regional Haze Plan\"), under the Clean Air Act (CAA) and the EPA's Regional Haze Rule (RHR) for the program's second implementation period. Arizona's SIP submission was developed to address the requirement that states must periodically revise their long-term strategies for making reasonable progress towards the national goal of preventing any future, and remedying any existing, anthropogenic impairment of visibility, including regional haze, in mandatory Class I Federal areas. The SIP submission also addresses other applicable requirements for the second implementation period of the regional haze program. Within this action, the EPA is also disapproving the visibility transport prong of Arizona's infrastructure SIP submittals for the 2012 annual fine particulate matter (PM<INF>2.5</INF>) and 2015 ozone National Ambient Air Quality Standards (NAAQS). The EPA is taking this action pursuant to CAA sections 110 and 169A.","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/2024/12/18/2024-29508.html","cfr_references":[{"chapter":null,"citation_url":null,"part":52,"title":40}],"citation":"89 FR 102744","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"This rule is effective on January 17, 2025.","disposition_notes":null,"docket_ids":["EPA-R09-OAR-2024-0005","FRL-11919-02-R9"],"dockets":[{"supporting_documents":[{"title":"G-1. NFRM_Partial Approval Partial Disapproval of AZ RH SIP and Prong 4 for 2015 Ozone and 2012 PM2.5_89 FR 102744, December 18, 2024","document_id":"EPA-R09-OAR-2024-0005-0030"},{"title":"F. Additional Documents Considered for Final Plan Action","document_id":"EPA-R09-OAR-2024-0005-0029"},{"title":"3 - Docket Index AZ RH - Final Action","document_id":"EPA-R09-OAR-2024-0005-0028"},{"title":"10-8-24_Memorandum re_10-1-24_Call with NPCA, Earthjustice, and Sierra Club on AZ Regional Haze SIP","document_id":"EPA-R09-OAR-2024-0005-0026"},{"title":"2 - Docket Index AZ RH and Prong 4 - Comment Period Extension","document_id":"EPA-R09-OAR-2024-0005-0013"},{"title":"D-2 Comment Period Extension - 89 FR 53372","document_id":"EPA-R09-OAR-2024-0005-0012"},{"title":"1 - Docket Index AZ RH Prong 4 - Proposed Action","document_id":"EPA-R09-OAR-2024-0005-0006"},{"title":"D. Notice of Proposed Rulemaking","document_id":"EPA-R09-OAR-2024-0005-0005"},{"title":"C. Additional Documents for Proposed Rulemaking","document_id":"EPA-R09-OAR-2024-0005-0004"},{"title":"B. EPA Rulemakings, Guidance, and Policies","document_id":"EPA-R09-OAR-2024-0005-0003"}],"agency_name":"EPA","documents":[{"comment_count":0,"comment_start_date":"2024-12-18","updated_at":"2024-12-18T09:06:08.399-05:00","comment_url":"https://www.regulations.gov/commenton/EPA-R09-OAR-2024-0005-0027","allow_late_comments":false,"id":"EPA-R09-OAR-2024-0005-0027","comment_end_date":null,"regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":11,"id":"EPA-R09-OAR-2024-0005","title":"Partial Approval and Disapproval of Air Quality Implementation Plans; Arizona; Regional Haze State Implementation Plan for the Second Implementation Period and Prong 4 (Visibility) for the 2015 Ozone and 2012 Particulate Matter Standards"}],"document_number":"2024-29508","effective_on":"2025-01-17","end_page":102773,"executive_order_notes":null,"executive_order_number":null,"explanation":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2024/12/18/2024-29508.xml","html_url":"https://www.federalregister.gov/documents/2024/12/18/2024-29508/partial-approval-and-disapproval-of-air-quality-implementation-plans-arizona-regional-haze-state","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2024-29508?publication_date=2024-12-18","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2024-12-18/2024-29508/mods.xml","not_received_for_publication":null,"page_length":30,"page_views":{"count":565,"last_updated":"2026-04-04 12:15:04 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2024-12-18/pdf/2024-29508.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2024-29508.pdf?1734443142","publication_date":"2024-12-18","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2024/12/18/2024-29508.txt","regulation_id_number_info":{},"regulation_id_numbers":[],"regulations_dot_gov_info":{"supporting_documents":[{"title":"G-1. NFRM_Partial Approval Partial Disapproval of AZ RH SIP and Prong 4 for 2015 Ozone and 2012 PM2.5_89 FR 102744, December 18, 2024","document_id":"EPA-R09-OAR-2024-0005-0030"},{"title":"F. Additional Documents Considered for Final Plan Action","document_id":"EPA-R09-OAR-2024-0005-0029"},{"title":"3 - Docket Index AZ RH - Final Action","document_id":"EPA-R09-OAR-2024-0005-0028"},{"title":"10-8-24_Memorandum re_10-1-24_Call with NPCA, Earthjustice, and Sierra Club on AZ Regional Haze SIP","document_id":"EPA-R09-OAR-2024-0005-0026"},{"title":"2 - Docket Index AZ RH and Prong 4 - Comment Period Extension","document_id":"EPA-R09-OAR-2024-0005-0013"},{"title":"D-2 Comment Period Extension - 89 FR 53372","document_id":"EPA-R09-OAR-2024-0005-0012"},{"title":"1 - Docket Index AZ RH Prong 4 - Proposed Action","document_id":"EPA-R09-OAR-2024-0005-0006"},{"title":"D. Notice of Proposed Rulemaking","document_id":"EPA-R09-OAR-2024-0005-0005"},{"title":"C. Additional Documents for Proposed Rulemaking","document_id":"EPA-R09-OAR-2024-0005-0004"},{"title":"B. EPA Rulemakings, Guidance, and Policies","document_id":"EPA-R09-OAR-2024-0005-0003"}],"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-R09-OAR-2024-0005","supporting_documents_count":11,"docket_id":"EPA-R09-OAR-2024-0005","document_id":"EPA-R09-OAR-2024-0005-0027","regulation_id_number":null,"title":"Partial Approval and Disapproval of Air Quality Implementation Plans; Arizona; Regional Haze State Implementation Plan for the Second Implementation Period and Prong 4 (Visibility) for the 2015 Ozone and 2012 Particulate Matter Standards","checked_regulationsdotgov_at":"2024-12-19T13:00:07Z"},"regulations_dot_gov_url":null,"significant":null,"signing_date":null,"start_page":102744,"subtype":null,"title":"Partial Approval and Disapproval of Air Quality Implementation Plans; Arizona; Regional Haze State Implementation Plan for the Second Implementation Period and Prong 4 (Visibility) for the 2015 Ozone and 2012 Particulate Matter Standards","toc_doc":"Arizona; Regional Haze State Implementation Plan for the Second Implementation Period and Prong 4 for the 2015 Ozone and 2012 Particulate Matter Standards","toc_subject":"Air Quality State Implementation Plans; Approvals and Promulgations","topics":["Air pollution control","Environmental protection","Incorporation by reference","Intergovernmental relations","Nitrogen oxides","Ozone","Particulate matter","Reporting and recordkeeping requirements","Sulfur oxides","Volatile organic compounds"],"type":"Rule","volume":89}