{"abstract":"The Environmental Protection Agency (EPA) is approving a State Implementation Plan (SIP) revision submitted by the State of Rhode Island on March 7, 2025, as satisfying the applicable requirements under the Clean Air Act (CAA) and EPA's Regional Haze Rule (RHR) for the program's second implementation period. Rhode Island's SIP submission addresses 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. EPA is also approving the remaining element of Rhode Island's September 23, 2020, infrastructure SIP (ISIP) submittal for the 2015 ozone National Ambient Air Quality Standard (NAAQS). The approval of Rhode Island's second implementation period regional haze plan addresses ISIP requirements related to visibility protection. The EPA is taking this action pursuant to sections 110 and 169A of the Clean Air Act.","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/2026/04/09/2026-06838.html","cfr_references":[{"chapter":null,"citation_url":null,"part":"52","title":40}],"citation":"91 FR 17852","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"This rule is effective on May 11, 2026.","disposition_notes":null,"docket_ids":["EPA-R01-OAR-2025-0915 and EPA-R01-OAR-2020-0562","FRL-13065-02-R1"],"dockets":[{"supporting_documents":[{"title":"Contribs to RH in NE MA US MANVU Contrib Assess NESCAUM 2006","document_id":"EPA-R01-OAR-2025-0915-0037"},{"title":"2013 Guidance on ISIP elements","document_id":"EPA-R01-OAR-2025-0915-0036"},{"title":"Dominion Energy Manchester Street Operating Permit","document_id":"EPA-R01-OAR-2025-0915-0035"},{"title":"2022 OER Annual Report","document_id":"EPA-R01-OAR-2025-0915-0034"},{"title":"Appendix 13_MANE-VU_Speciation_and_Trajectory_Analyses_-_Final","document_id":"EPA-R01-OAR-2025-0915-0033"},{"title":"Appendix 21_OTC MANE-VU 2011 Based Modeling Platform Support Document October 2018 - Final","document_id":"EPA-R01-OAR-2025-0915-0032"},{"title":"Appendix 22_MANEVU Trends 2004-19 Report 2nd SIP Metrics -January 21 2021 Update","document_id":"EPA-R01-OAR-2025-0915-0031"},{"title":"Appendix 17_Winter NOX Control Report 171120","document_id":"EPA-R01-OAR-2025-0915-0029"},{"title":"Appendix 16_ MANE-VU Contributing State Analysis Final","document_id":"EPA-R01-OAR-2025-0915-0028"},{"title":"Appendix 24_NPS comment on RI RH SIP","document_id":"EPA-R01-OAR-2025-0915-0027"}],"agency_name":"EPA","documents":[{"comment_count":0,"comment_start_date":"2026-04-09","updated_at":"2026-04-09T13:56:18.115-04:00","comment_url":"https://www.regulations.gov/commenton/EPA-R01-OAR-2025-0915-0038","allow_late_comments":false,"id":"EPA-R01-OAR-2025-0915-0038","comment_end_date":null,"regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":36,"id":"EPA-R01-OAR-2025-0915","title":"Air Plan Approval; Rhode Island; Regional Haze State Implementation Plan for the Second Implementation Period"}],"document_number":"2026-06838","effective_on":"2026-05-11","end_page":17855,"executive_order_notes":null,"executive_order_number":null,"explanation":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2026/04/09/2026-06838.xml","html_url":"https://www.federalregister.gov/documents/2026/04/09/2026-06838/air-plan-approval-rhode-island-regional-haze-state-implementation-plan-for-the-second-implementation","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2026-06838?publication_date=2026-04-09","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2026-04-09/2026-06838/mods.xml","not_received_for_publication":null,"page_length":4,"page_views":{"count":94,"last_updated":"2026-04-10 22:15:05 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2026-04-09/pdf/2026-06838.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2026-06838.pdf?1775652313","publication_date":"2026-04-09","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2026/04/09/2026-06838.txt","regulation_id_number_info":{},"regulation_id_numbers":[],"regulations_dot_gov_info":{"supporting_documents":[{"title":"Contribs to RH in NE MA US MANVU Contrib Assess NESCAUM 2006","document_id":"EPA-R01-OAR-2025-0915-0037"},{"title":"2013 Guidance on ISIP elements","document_id":"EPA-R01-OAR-2025-0915-0036"},{"title":"Dominion Energy Manchester Street Operating Permit","document_id":"EPA-R01-OAR-2025-0915-0035"},{"title":"2022 OER Annual Report","document_id":"EPA-R01-OAR-2025-0915-0034"},{"title":"Appendix 13_MANE-VU_Speciation_and_Trajectory_Analyses_-_Final","document_id":"EPA-R01-OAR-2025-0915-0033"},{"title":"Appendix 21_OTC MANE-VU 2011 Based Modeling Platform Support Document October 2018 - Final","document_id":"EPA-R01-OAR-2025-0915-0032"},{"title":"Appendix 22_MANEVU Trends 2004-19 Report 2nd SIP Metrics -January 21 2021 Update","document_id":"EPA-R01-OAR-2025-0915-0031"},{"title":"Appendix 17_Winter NOX Control Report 171120","document_id":"EPA-R01-OAR-2025-0915-0029"},{"title":"Appendix 16_ MANE-VU Contributing State Analysis Final","document_id":"EPA-R01-OAR-2025-0915-0028"},{"title":"Appendix 24_NPS comment on RI RH SIP","document_id":"EPA-R01-OAR-2025-0915-0027"}],"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-R01-OAR-2025-0915","supporting_documents_count":36,"docket_id":"EPA-R01-OAR-2025-0915","document_id":"EPA-R01-OAR-2025-0915-0038","regulation_id_number":null,"title":"Air Plan Approval; Rhode Island; Regional Haze State Implementation Plan for the Second Implementation Period","checked_regulationsdotgov_at":"2026-04-10T20:55:06Z"},"regulations_dot_gov_url":null,"significant":null,"signing_date":null,"start_page":17852,"subtype":null,"title":"Air Plan Approval; Rhode Island; Regional Haze State Implementation Plan for the Second Implementation Period; Prong 4 (Visibility) for the 2015 8-Hour Ozone National Ambient Air Quality Standard","toc_doc":"Rhode Island; Regional Haze State Implementation Plan for the Second Implementation Period; Prong 4 (Visibility) for the 2015 8-Hour Ozone National Ambient Air Quality Standard","toc_subject":"Air Quality State Implementation Plans; Approvals and Promulgations","topics":["Air pollution control","Carbon monoxide","Environmental protection","Incorporation by reference","Intergovernmental relations","Lead","Ozone","Reporting and recordkeeping requirements","Sulfur oxides","Volatile organic compounds"],"type":"Rule","volume":91}