{"abstract":"The Environmental Protection Agency (EPA) is announcing its approval of the request from Ohio to reinstate the 1-psi (pound per square inch) volatility waiver within the state.","action":"Notice of approval.","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/2026/02/04/2026-02229.html","cfr_references":[],"citation":"91 FR 5108","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"February 4, 2026.","disposition_notes":null,"docket_ids":["FRL-13129-01-OAR"],"dockets":[{"supporting_documents":[{"title":"Adequacy Status of the Cleveland/Akron, Ohio and the Columbus, Ohio Submitted 8-Hour Ozone Redesignation and Maintenance Plans for Transportation Conformity Purposes","document_id":"EPA_FRDOC_0001-6733"},{"title":"DELETE","document_id":"EPA_FRDOC_0001-6642"},{"title":"Agency Information Collection Activities; 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