{"abstract":"The U.S. Environmental Protection Agency (EPA) is finalizing amendments to the National Emission Standards for Hazardous Air Pollutants (NESHAP) for the Polyether Polyols (PEPO) Production source category (\"PEPO NESHAP\") under Clean Air Act (CAA) section 112. Specifically, the EPA is finalizing certain ethylene oxide (EtO)- specific standards pursuant to CAA section 112(d)(6) rather than finalizing the proposed second residual risk review and corresponding amendments pursuant to CAA section 112(f)(2). In addition, the EPA is taking final action addressing certain issues raised in an administrative petition for reconsideration. Lastly, the EPA is finalizing maximum achievable control technology (MACT) standards for certain emission points, work practice standards for certain activities where alternatives are appropriate, performance testing requirements once every five years for certain process vents, and electronic reporting requirements for performance test reports, flare management plans, and periodic reports.","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/2026/03/18/2026-05261.html","cfr_references":[{"chapter":null,"citation_url":null,"part":"63","title":40}],"citation":"91 FR 13116","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"This final rule is effective on March 18, 2026. The Director of the Federal Register (FR) has approved incorporation by reference (IBR) of certain publications listed in the rule as of March 18, 2026.","disposition_notes":null,"docket_ids":["EPA-HQ-OAR-2023-0282","FRL-10854-02-OAR"],"dockets":[],"document_number":"2026-05261","effective_on":"2026-03-18","end_page":13195,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2026/03/18/2026-05261.xml","html_url":"https://www.federalregister.gov/documents/2026/03/18/2026-05261/national-emission-standards-for-hazardous-air-pollutants-polyether-polyols-production-industry","images":{"ER18MR26.005":{"large":"https://img.federalregister.gov/ER18MR26.005/ER18MR26.005_large.png","medium":"https://img.federalregister.gov/ER18MR26.005/ER18MR26.005_medium.png","original_size":"https://img.federalregister.gov/ER18MR26.005/ER18MR26.005_original_size.png"},"ER18MR26.006":{"large":"https://img.federalregister.gov/ER18MR26.006/ER18MR26.006_large.png","medium":"https://img.federalregister.gov/ER18MR26.006/ER18MR26.006_medium.png","original_size":"https://img.federalregister.gov/ER18MR26.006/ER18MR26.006_original_size.png"},"ER18MR26.007":{"large":"https://img.federalregister.gov/ER18MR26.007/ER18MR26.007_large.png","medium":"https://img.federalregister.gov/ER18MR26.007/ER18MR26.007_medium.png","original_size":"https://img.federalregister.gov/ER18MR26.007/ER18MR26.007_original_size.png"},"ER18MR26.008":{"large":"https://img.federalregister.gov/ER18MR26.008/ER18MR26.008_large.png","medium":"https://img.federalregister.gov/ER18MR26.008/ER18MR26.008_medium.png","original_size":"https://img.federalregister.gov/ER18MR26.008/ER18MR26.008_original_size.png"},"ER18MR26.012":{"large":"https://img.federalregister.gov/ER18MR26.012/ER18MR26.012_large.png","medium":"https://img.federalregister.gov/ER18MR26.012/ER18MR26.012_medium.png","original_size":"https://img.federalregister.gov/ER18MR26.012/ER18MR26.012_original_size.png"},"ER18MR26.003":{"large":"https://img.federalregister.gov/ER18MR26.003/ER18MR26.003_large.png","medium":"https://img.federalregister.gov/ER18MR26.003/ER18MR26.003_medium.png","original_size":"https://img.federalregister.gov/ER18MR26.003/ER18MR26.003_original_size.png"},"ER18MR26.004":{"large":"https://img.federalregister.gov/ER18MR26.004/ER18MR26.004_large.png","medium":"https://img.federalregister.gov/ER18MR26.004/ER18MR26.004_medium.png","original_size":"https://img.federalregister.gov/ER18MR26.004/ER18MR26.004_original_size.png"},"ER18MR26.010":{"large":"https://img.federalregister.gov/ER18MR26.010/ER18MR26.010_large.png","medium":"https://img.federalregister.gov/ER18MR26.010/ER18MR26.010_medium.png","original_size":"https://img.federalregister.gov/ER18MR26.010/ER18MR26.010_original_size.png"},"ER18MR26.011":{"large":"https://img.federalregister.gov/ER18MR26.011/ER18MR26.011_large.png","medium":"https://img.federalregister.gov/ER18MR26.011/ER18MR26.011_medium.png","original_size":"https://img.federalregister.gov/ER18MR26.011/ER18MR26.011_original_size.png"},"ER18MR26.009":{"large":"https://img.federalregister.gov/ER18MR26.009/ER18MR26.009_large.png","medium":"https://img.federalregister.gov/ER18MR26.009/ER18MR26.009_medium.png","original_size":"https://img.federalregister.gov/ER18MR26.009/ER18MR26.009_original_size.png"}},"images_metadata":{"ER18MR26.005":{"large":{"identifier":"ER18MR26.005","content_type":"image/png","size":1861,"width":215,"sha":"9c44066b831b5119ac392282164ccf87","url":"https://img.federalregister.gov/ER18MR26.005/ER18MR26.005_large.png","height":63},"medium":{"identifier":"ER18MR26.005","content_type":"image/png","size":707,"width":102,"sha":"be5288952cd7788e127da41eff6237d6","url":"https://img.federalregister.gov/ER18MR26.005/ER18MR26.005_medium.png","height":30},"original_size":{"identifier":"ER18MR26.005","content_type":"image/png","size":2610,"width":780,"sha":"1a82537db98b43f4297e150c9182e129","url":"https://img.federalregister.gov/ER18MR26.005/ER18MR26.005_original_size.png","height":229}},"ER18MR26.006":{"large":{"identifier":"ER18MR26.006","content_type":"image/png","size":2783,"width":273,"sha":"4536cc71c025b8545f2c982387e1ef2c","url":"https://img.federalregister.gov/ER18MR26.006/ER18MR26.006_large.png","height":103},"medium":{"identifier":"ER18MR26.006","content_type":"image/png","size":1127,"width":127,"sha":"a5e371e0bf13f4624cae1c6301147cf6","url":"https://img.federalregister.gov/ER18MR26.006/ER18MR26.006_medium.png","height":48},"original_size":{"identifier":"ER18MR26.006","content_type":"image/png","size":5852,"width":982,"sha":"27851c352f6b5e2775dc172efabe948a","url":"https://img.federalregister.gov/ER18MR26.006/ER18MR26.006_original_size.png","height":370}},"ER18MR26.007":{"large":{"identifier":"ER18MR26.007","content_type":"image/png","size":2930,"width":298,"sha":"a0b9c523e06a17f58b9c16b907f8cf64","url":"https://img.federalregister.gov/ER18MR26.007/ER18MR26.007_large.png","height":103},"medium":{"identifier":"ER18MR26.007","content_type":"image/png","size":1192,"width":140,"sha":"88be602f7ce9b88f714517546c0628f4","url":"https://img.fed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National Emission Standards for Hazardous Air Pollutants for Polyether Polyols Production Industry "},"agency_id":"EPA","comments_url":"https://www.regulations.gov/docketBrowser?rpp=50&so=DESC&sb=postedDate&po=0&dct=PS&D=EPA-HQ-OAR-2023-0282","supporting_documents_count":93,"docket_id":"EPA-HQ-OAR-2023-0282","document_id":"EPA-HQ-OAR-2023-0282-0109","regulation_id_number":"2060-AW01","title":"Review of National Emission Standards for Hazardous Air Pollutants: Polyether Polyols Production","checked_regulationsdotgov_at":"2026-03-19T16:55:06Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":13116,"subtype":null,"title":"National Emission Standards for Hazardous Air Pollutants: Polyether Polyols Production Industry Review","toc_doc":"Polyether Polyols Production Industry Review","toc_subject":"National Emission Standards for Hazardous Air Pollutants","topics":["Administrative practice and procedure","Air pollution control","Environmental protection","Hazardous substances","Incorporation by reference","Intergovernmental relations","Reporting and recordkeeping requirements"],"type":"Rule","volume":91}