{"abstract":"In this notice, OSHA grants a permanent variance to CBNA/ Halmar Joint Venture (CBNA/Halmar) related to work in compressed air environments.","action":"Notice.","agencies":[{"raw_name":"DEPARTMENT OF LABOR","name":"Labor Department","id":271,"url":"https://www.federalregister.gov/agencies/labor-department","json_url":"https://www.federalregister.gov/api/v1/agencies/271","parent_id":null,"slug":"labor-department"},{"raw_name":"Occupational Safety and Health Administration","name":"Occupational Safety and Health Administration","id":386,"url":"https://www.federalregister.gov/agencies/occupational-safety-and-health-administration","json_url":"https://www.federalregister.gov/api/v1/agencies/386","parent_id":271,"slug":"occupational-safety-and-health-administration"}],"body_html_url":"https://www.federalregister.gov/documents/full_text/html/2025/12/29/2025-23805.html","cfr_references":[],"citation":"90 FR 60742","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"The permanent variance specified by this notice becomes effective on December 29, 2025 and shall remain in effect until the completion of the Potomac River Tunnel Project or until modified or revoked by OSHA.","disposition_notes":null,"docket_ids":["Docket No. OSHA-2025-0002"],"dockets":[{"supporting_documents":[{"title":"Potomac Review Tunnel Variance Application","document_id":"OSHA-2025-0002-0004"},{"title":"Potomac River Tunnel Project Hyperbaric Safety Management Plan (HOM)","document_id":"OSHA-2025-0002-0003"}],"agency_name":"OSHA","documents":[{"comment_count":0,"comment_start_date":"2025-12-29","updated_at":"2025-12-29T10:56:52.663-05:00","comment_url":"https://www.regulations.gov/commenton/OSHA-2025-0002-0002","allow_late_comments":false,"id":"OSHA-2025-0002-0002","comment_end_date":null,"regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":2,"id":"OSHA-2025-0002","title":"CBNA/Halmar Joint Venture - Tunneling"}],"document_number":"2025-23805","effective_on":"2025-12-29","end_page":60752,"executive_order_notes":null,"executive_order_number":null,"explanation":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2025/12/29/2025-23805.xml","html_url":"https://www.federalregister.gov/documents/2025/12/29/2025-23805/cbnahalmar-joint-venture-potomac-river-tunnel-project-grant-of-permanent-variance","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2025-23805?publication_date=2025-12-29","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2025-12-29/2025-23805/mods.xml","not_received_for_publication":null,"page_length":11,"page_views":{"count":213,"last_updated":"2026-04-25 10:15:04 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2025-12-29/pdf/2025-23805.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2025-23805.pdf?1766497511","publication_date":"2025-12-29","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2025/12/29/2025-23805.txt","regulation_id_number_info":{},"regulation_id_numbers":[],"regulations_dot_gov_info":{"supporting_documents":[],"comments_count":0,"agency_id":"OSHA","comments_url":"https://www.regulations.gov/docketBrowser?rpp=50&so=DESC&sb=postedDate&po=0&dct=PS&D=OSHA-2025-0002","supporting_documents_count":0,"docket_id":"OSHA-2025-0002","document_id":"OSHA-2025-0002-0002","regulation_id_number":null,"title":"CBNA/Halmar Joint Venture - Tunneling","checked_regulationsdotgov_at":"2025-12-30T19:55:05Z"},"regulations_dot_gov_url":null,"significant":null,"signing_date":null,"start_page":60742,"subtype":null,"title":"CBNA/Halmar Joint Venture; Potomac River Tunnel Project; Grant of Permanent Variance","toc_doc":"CBNA/Halmar Joint Venture; Potomac River Tunnel Project","toc_subject":"Grant of Permanent Variance","topics":[],"type":"Notice","volume":90}