{"abstract":"On April 5, 2024, the U.S. Environmental Protection Agency (EPA) published the National Emission Standards for Hazardous Air Pollutants (NESHAP): Ethylene Oxide Emissions Standards for Sterilization Facilities Residual Risk and Technology Review (2024 Final Rule). The 2024 Final Rule revised the Commercial Sterilization Facilities NESHAP based on a residual risk and technology review (RTR) pursuant to the Clean Air Act (CAA) sections. On March 12, 2025, the EPA announced that it was reconsidering the 2024 Final Rule. Based on its reconsideration of the RTR in the 2024 Final Rule, the EPA is proposing to amend the Commercial Sterilization Facilities NESHAP. The amendments would rescind the risk based standards, revise the standard for new aeration room vents that resulted from the technology review, revise the compliance demonstration requirements, and rescind a requirement related to permanent total enclosure (PTE). This proposal also includes technical corrections and clarifications to the Commercial Sterilization Facilities NESHAP and Performance Specification 19 to address erroneous cross-references, omissions of text, and typographical errors in the regulatory text that the EPA has identified after publication of the 2024 Final Rule.","action":"Proposed rule; reconsideration of 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/2026/03/17/2026-05167.html","cfr_references":[{"chapter":null,"citation_url":null,"part":63,"title":40}],"citation":"91 FR 12700","comment_url":"http://www.regulations.gov/commenton/EPA-HQ-OAR-2019-0178-1607","comments_close_on":"2026-05-01","correction_of":null,"corrections":[],"dates":"Comments must be received on or before May 1, 2026. Under the Paperwork Reduction Act (PRA), comments on the information collection provisions are best assured of consideration if the Office of Management and Budget (OMB) receives a copy of your comments on or before April 16, 2026.","disposition_notes":null,"docket_ids":["EPA-HQ-OAR-2019-0178","FRL-7055.1-01-OAR"],"dockets":[{"supporting_documents":[{"title":"Risk and Technology Review - Analysis of Demographic Factors For Populations Living Near Commercial Ethylene Oxide Sterilization Operations","document_id":"EPA-HQ-OAR-2019-0178-1591"},{"title":"Ample Margin of Safety Analysis for Ethylene Oxide Commercial Sterilization - Promulgation Rule Review for the Ethylene Oxide Commercial Sterilization Source Category","document_id":"EPA-HQ-OAR-2019-0178-1575"},{"title":"Input Modeling File for EtO Commercial Sterilization Facilities Source Category","document_id":"EPA-HQ-OAR-2019-0178-1572"},{"title":"Cost Memorandum. February 2023.","document_id":"EPA-HQ-OAR-2019-0178-1571"},{"title":"2019 AirToxScreen National Cancer Risk by Pollutant","document_id":"EPA-HQ-OAR-2019-0178-1570"},{"title":"USEPA Webpage: Ethylene Oxide (EtO) Risks and Your Health. Captured March 1, 2024","document_id":"EPA-HQ-OAR-2019-0178-1564"},{"title":"Final Regulatory Flexibility Analysis for National Emission Standards for Hazardous Air Pollutants: Ethylene Oxide Emissions Standards for Sterilization Facilities Residual Risk and Technology Review Final Rule","document_id":"EPA-HQ-OAR-2019-0178-1558"},{"title":"Redline/Strikeout for final amendments to 40 CFR 63 Subpart O: Ethylene Oxide Emissions Standards for Sterilization Facilities","document_id":"EPA-HQ-OAR-2019-0178-1556"},{"title":"Performance Specification 19 - Performance Specifications and Test Procedures for Ethylene Oxide (EtO) Continuous Monitoring Systems (Final)","document_id":"EPA-HQ-OAR-2019-0178-1554"},{"title":"The Healthy Worker Effect in Cancer Incidence Studies. Kirkeleit et al. 2012.","document_id":"EPA-HQ-OAR-2019-0178-1545"}],"agency_name":"EPA","documents":[{"comment_count":6304,"comment_start_date":"2026-03-17","updated_at":"2026-04-05T01:55:44.862-04:00","comment_url":"https://www.regulations.gov/commenton/EPA-HQ-OAR-2019-0178-1607","allow_late_comments":false,"id":"EPA-HQ-OAR-2019-0178-1607","comment_end_date":"2026-05-02","regulations_dot_gov_open_for_comment":true}],"supporting_documents_count":516,"id":"EPA-HQ-OAR-2019-0178","title":"National Emission Standards for Hazardous Air Pollutants: Commercial Ethylene Oxide Sterilization Technology Review"}],"document_number":"2026-05167","effective_on":null,"end_page":12736,"executive_order_notes":null,"executive_order_number":null,"explanation":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2026/03/17/2026-05167.xml","html_url":"https://www.federalregister.gov/documents/2026/03/17/2026-05167/national-emission-standards-for-hazardous-air-pollutants-ethylene-oxide-emissions-standards-for","images":{"EP17MR26.013":{"large":"https://img.federalregister.gov/EP17MR26.013/EP17MR26.013_large.png","medium":"https://img.federalregister.gov/EP17MR26.013/EP17MR26.013_medium.png","original_size":"https://img.federalregister.gov/EP17MR26.013/EP17MR26.013_original_size.png"},"EP17MR26.024":{"large":"https://img.federalregister.gov/EP17MR26.024/EP17MR26.024_large.png","medium":"https://img.federalregister.gov/EP17MR26.024/EP17MR26.024_medium.png","original_size":"https://img.federalregister.gov/EP17MR26.024/EP17MR26.024_original_size.png"},"EP17MR26.014":{"large":"https://img.federalregister.gov/EP17MR26.014/EP17MR26.014_large.png","medium":"https://img.federalregister.gov/EP17MR26.014/EP17MR26.014_medium.png","original_size":"https://img.federalregister.gov/EP17MR26.014/EP17MR26.014_original_size.png"},"EP17MR26.025":{"large":"https://img.federalregister.gov/EP17MR26.025/EP17MR26.025_large.png","medium":"https://img.federalregister.gov/EP17MR26.025/EP17MR26.025_medium.png","original_size":"https://img.federalregister.gov/EP17MR26.025/EP17MR26.025_original_size.png"},"EP17MR26.011":{"large":"https://img.federalregister.gov/EP17MR26.011/EP17MR26.011_large.png","medium":"https://img.federalregister.gov/EP17MR26.011/EP17MR26.011_medium.png","original_size":"https://img.federalregister.gov/EP17MR26.011/EP17MR26.011_original_size.png"},"EP17MR26.022":{"large":"https://img.federalregister.gov/EP17MR26.022/EP17MR26.022_large.png","medium":"https://img.federalregister.gov/EP17MR26.022/EP17MR26.022_medium.png","original_size":"https://img.federalregister.gov/EP17MR26.022/EP17MR26.022_original_size.png"},"EP17MR26.012":{"large":"https://img.federalregister.gov/EP17MR26.012/EP17MR26.012_large.png","medium":"https://img.federalregister.gov/EP17MR26.012/EP17MR26.012_medium.png","original_size":"https://img.federalregister.gov/EP17MR26.012/EP17MR26.012_original_size.png"},"EP17MR26.023":{"large":"https://img.federalregister.gov/EP17MR26.023/EP17MR26.023_large.png","medium":"https://img.federalregister.gov/EP17MR26.023/EP17MR26.023_medium.png","original_size":"https://img.federalregister.gov/EP17MR26.023/EP17MR26.023_original_size.png"},"EP17MR26.020":{"large":"https://img.federalregister.gov/EP17MR26.020/EP17MR26.020_large.png","medium":"https://img.federalregister.gov/EP17MR26.020/EP17MR26.020_medium.png","original_size":"https://img.federalregister.gov/EP17MR26.020/EP17MR26.020_original_size.png"},"EP17MR26.021":{"large":"https://img.federalregister.gov/EP17MR26.021/EP17MR26.021_large.png","medium":"https://img.federalregister.gov/EP17MR26.021/EP17MR26.021_medium.png","original_size":"https://img.federalregister.gov/EP17MR26.021/EP17MR26.021_original_size.png"},"EP17MR26.030":{"large":"https://img.federalregister.gov/EP17MR26.030/EP17MR26.030_large.png","medium":"https://img.federalregister.gov/EP17MR26.030/EP17MR26.030_medium.png","original_size":"https://img.federalregister.gov/EP17MR26.030/EP17MR26.030_original_size.png"},"EP17MR26.019":{"large":"https://img.federalregister.gov/EP17MR26.019/EP17MR26.019_large.png","medium":"https://img.federalregister.gov/EP17MR26.019/EP17MR26.019_medium.png","original_size":"https://img.federalregister.gov/EP17MR26.019/EP17MR26.019_original_size.png"},"EP17MR26.017":{"large":"https://img.federalregister.gov/EP17MR26.017/EP17MR26.017_large.png","medium":"https://img.federalregister.gov/EP17MR26.017/EP17MR26.017_medium.png","original_size":"https://img.federalregister.gov/EP17MR26.017/EP17MR26.017_original_size.png"},"EP17MR26.028":{"large":"https://img.federalregister.gov/EP17MR26.028/EP17MR26.028_large.png","medium":"https://img.federalregister.gov/EP17MR26.028/EP17MR26.028_medium.png","original_size":"https://img.federalregister.gov/EP17MR26.028/EP17MR26.028_original_size.png"},"EP17MR26.018":{"large":"https://img.federalregister.gov/EP17MR26.018/EP17MR26.018_large.png","medium":"https://img.federalregister.gov/EP17MR26.018/EP17MR26.018_medium.png","original_size":"https://img.federalregister.gov/EP17MR26.018/EP17MR26.018_original_size.png"},"EP17MR26.029":{"large":"https://img.federalregister.gov/EP17MR26.029/EP17MR26.029_large.png","medium":"https://img.federalregister.gov/EP17MR26.029/EP17MR26.029_medium.png","original_size":"https://img.federalregister.gov/EP17MR26.029/EP17MR26.029_original_size.png"},"EP17MR26.015":{"large":"https://img.federalregister.gov/EP17MR26.015/EP17MR26.015_large.png","medium":"https://img.federalregister.gov/EP17MR26.015/EP17MR26.015_medium.png","original_size":"https://img.federalregister.gov/EP17MR26.015/EP17MR26.015_original_size.png"},"EP17MR26.026":{"large":"https://img.federalregister.gov/EP17MR26.026/EP17MR26.026_large.png","medium":"https://img.federalregister.gov/EP17MR26.026/EP17MR26.026_medium.png","original_size":"https://img.federalregister.gov/EP17MR26.026/EP17MR26.026_original_size.png"},"EP17MR26.016":{"large":"https://img.federalregister.gov/EP17MR26.016/EP17MR26.016_large.png","medium":"https://img.federalregister.gov/EP17MR26.016/EP17MR26.016_medium.png","original_size":"https://img.federalregister.gov/EP17MR26.016/EP17MR26.016_original_size.png"},"EP17MR26.027":{"large":"https://img.federalregister.gov/EP17MR26.027/EP17MR26.027_large.png","medium":"https://img.federalregister.gov/EP17MR26.027/EP17MR26.027_medium.png","original_size":"https://img.federalregister.gov/EP17MR26.027/EP17MR26.027_original_size.png"}},"images_metadata":{"EP17MR26.013":{"large":{"identifier":"EP17MR26.013","content_type":"image/png","size":59256,"width":823,"sha":"cab0a9742f12bc6dacf45ed3f832a7ed","url":"https://img.federalregister.gov/EP17MR26.013/EP17MR26.013_large.png","height":788},"medium":{"identifier":"EP17MR26.013","content_type":"image/png","size":31318,"width":518,"sha":"f0a85b2320794e6b35f2ffe4aca0a7b5","url":"https://img.federalregister.gov/EP17MR26.013/EP17MR26.013_medium.png","height":496},"original_size":{"identifier":"EP17MR26.013","content_type":"image/png","size":34561,"width":1955,"sha":"91eb25fca6d4801b7bc5e19d750554a1","url":"https://img.federalregister.gov/EP17MR26.013/EP17MR26.013_original_size.png","height":1871}},"EP17MR26.024":{"large":{"identifier":"EP17MR26.024","content_type":"image/png","size":110326,"width":823,"sha":"f93a452f8af2ed2a9adf648dd544bac2","url":"https://img.federalregister.gov/EP17MR26.024/EP17MR26.024_large.png","height":1062},"medium":{"identifier":"EP17MR26.024","content_type":"image/png","size":56156,"width":515,"sha":"2bfaafe29add2f5fbdf0881aa038fddf","url":"https://img.federalregister.gov/EP17MR26.024/EP17MR26.024_medium.png","height":665},"original_size":{"identifier":"EP17MR26.024","content_type":"image/png","size":89377,"width":1947,"sha":"69a876e7bf944bcfaf277c72e0727d33","url":"https://img.federalregister.gov/EP17MR26.024/EP17MR26.024_original_size.png","height":2513}},"EP17MR26.014":{"large":{"identifier":"EP17MR26.014","content_type":"image/png","size":26539,"width":823,"sha":"6e8430c6f91d362104e35945f6655def","url":"https://img.federalregister.gov/EP17MR26.014/EP17MR26.014_large.png","height":421},"medium":{"identifier":"EP17MR26.014","content_type":"image/png","size":14031,"width":540,"sha":"3cf1e2fa71b3bd468c96df9b8ac7e1da","url":"https://img.federalregister.gov/EP17MR26.014/EP17MR26.014_medium.png","height":276},"original_size":{"identifier":"EP17MR26.014","content_type":"image/png","size":15648,"width":2039,"sha":"51502b64db3d338a5a5089489f46c811","url":"https://img.federalregister.gov/EP17MR26.014/EP17MR26.014_original_size.png","height":1044}},"EP17MR26.025":{"large":{"identifier":"EP17MR26.025","content_type":"image/png","size":117147,"width":823,"sha":"d1ee9dc1f1fcb29c085785cfeb24524d","url":"https://img.federalregister.gov/EP17MR26.025/EP17MR26.025_large.png","height":912},"medium":{"identifier":"EP17MR26.025","content_type":"image/png","size":57676,"width":515,"sha":"7b7be4634b97e8887e49296062bf192a","url":"https://img.federalregister.gov/EP17MR26.025/EP17MR26.025_medium.png","height":571},"original_size":{"identifier":"EP17MR26.025","content_type":"image/png","size":89178,"width":1947,"sha":"27ab7865a017722a0b4bebaa77ca7dff","url":"https://img.federalregister.gov/EP17MR26.025/EP17MR26.025_original_size.png","height":2158}},"EP17MR26.011":{"large":{"identifier":"EP17MR26.011","content_type":"image/png","size":37148,"width":823,"sha":"48bd60d020230a77626b622108097b8d","url":"https://img.federalregister.gov/EP17MR26.011/EP17MR26.011_large.png","height":399},"medium":{"identifier":"EP17MR26.011","content_type":"image/png","size":16832,"width":477,"sha":"8ebc243eefade8af44f26fec5602aedf","url":"https://img.federalregister.gov/EP17MR26.011/EP17MR26.011_medium.png","height":231},"original_size":{"identifier":"EP17MR26.011","content_type":"image/png","size":19967,"width":1801,"sha":"d56ad9f9812c88a260f95615fa3e7662","url":"https://img.federalregister.gov/EP17MR26.011/EP17MR26.011_original_size.png","height":873}},"EP17MR26.022":{"large":{"identifier":"EP17MR26.022","content_type":"image/png","size":88876,"width":823,"sha":"99ea3ebe3a089325be2f39f6ab6cc6fc","url":"https://img.federalregister.gov/EP17MR26.022/EP17MR26.022_large.png","height":823},"medium":{"identifier":"EP17MR26.022","content_type":"image/png","size":43655,"width":515,"sha":"4951a11564753c8fb787f3deddad041b","url":"https://img.federalregister.gov/EP17MR26.022/EP17MR26.022_medium.png","height":515},"original_size":{"identifier":"EP17MR26.022","content_type":"image/png","size":65788,"width":1947,"sha":"b247b4c53e8a16f5289ba24517eded0f","url":"https://img.federalregister.gov/EP17MR26.022/EP17MR26.022_original_size.png","height":1946}},"EP17MR26.012":{"large":{"identifier":"EP17MR26.012","content_type":"image/png","size":101045,"width":823,"sha":"bfe0fa285f5f22f3f3bc33abb28cf22c","url":"https://img.federalregister.gov/EP17MR26.012/EP17MR26.012_large.png","height":1233},"medium":{"identifier":"EP17MR26.012","content_type":"image/png","size":39927,"width":471,"sha":"ceb5e3771ec20aa5d57cf55ea5f34365","url":"https://img.federalregister.gov/EP17MR26.012/EP17MR26.012_medium.png","height":706},"original_size":{"identifier":"EP17MR26.012","content_type":"image/png","size":47829,"width":1780,"sha":"825a4d778ccb89198a9849b2342a1eb4","url":"https://img.federalregister.gov/EP17MR26.012/EP17MR26.012_original_size.png","height":2667}},"EP17MR26.023":{"large":{"identifier":"EP17MR26.023","content_type":"image/png","size":146435,"width":823,"sha":"3dd293c845c511fb0d7c6c9c4576d150","url":"https://img.federalregister.gov/EP17MR26.023/EP17MR26.023_large.png","height":1214},"medium":{"identifier":"EP17MR26.023","content_type":"image/png","size":62798,"width":478,"sha":"f04067505eaa4e88af1e5a7eb0c3b8ec","url":"https://img.federalregister.gov/EP17MR26.023/EP17MR26.023_medium.png","height":706},"original_size":{"identifier":"EP17MR26.023","content_type":"image/png","size":94272,"width":1807,"sha":"a3aad83afb1aba2dd3be843bf953d1a6","url":"https://img.federalregister.gov/EP17MR26.023/EP17MR26.023_original_size.png","height":2667}},"EP17MR26.020":{"large":{"identifier":"EP17MR26.020","content_type":"image/png","size":134748,"width":823,"sha":"619edfb443efff81592481ef096d8c1b","url":"https://img.federalregister.gov/EP17MR26.020/EP17MR26.020_large.png","height":1232},"medium":{"identifier":"EP17MR26.020","content_type":"image/png","size":54890,"width":471,"sha":"79712e96337938b1f251a488de8b2794","url":"https://img.federalregister.gov/EP17MR26.020/EP17MR26.020_medium.png","height":705},"original_size":{"identifier":"EP17MR26.020","content_type":"image/png","size":83616,"width":1781,"sha":"a5c9782d2b9cb5dbfbe55b77db0fe96e","url":"https://img.federalregister.gov/EP17MR26.020/EP17MR26.020_original_size.png","height":2667}},"EP17MR26.021":{"large":{"identifier":"EP17MR26.021","content_type":"image/png","size":142958,"width":823,"sha":"d4916078fc0cb1d00a1a4cf38e16be34","url":"https://img.federalregister.gov/EP17MR26.021/EP17MR26.021_large.png","height":1231},"medium":{"identifier":"EP17MR26.021","content_type":"image/png","size":60123,"width":472,"sha":"72cd52116a83b9dbb5c46cb3f6c2bc37","url":"https://img.federalregister.gov/EP17MR26.021/EP17MR26.021_medium.png","height":706},"original_size":{"identifier":"EP17MR26.021","content_type":"image/png","size":92623,"width":1783,"sha":"70be97af39a64f15d9c7ca91eff71567","url":"https://img.federalregister.gov/EP17MR26.021/EP17MR26.021_original_size.png","height":2667}},"EP17MR26.030":{"large":{"identifier":"EP17MR26.030","content_type":"image/png","size":34772,"width":823,"sha":"eabad0623b5e79a49ab03944a4541000","url":"https://img.federalregister.gov/EP17MR26.030/EP17MR26.030_large.png","height":421},"medium":{"identifier":"EP17MR26.030","content_type":"image/png","size":15627,"width":515,"sha":"722afa53824744ddbe3fbf5c93944fb2","url":"https://img.federalregister.gov/EP17MR26.030/EP17MR26.030_medium.png","height":264},"original_size":{"identifier":"EP17MR26.030","content_type":"image/png","size":21624,"width":1944,"sha":"74bd306178e0076add19b08251a6e6da","url":"https://img.federalregister.gov/EP17MR26.030/EP17MR26.030_original_size.png","height":995}},"EP17MR26.019":{"large":{"identifier":"EP17MR26.019","content_type":"image/png","size":137292,"width":822,"sha":"85ca69b83eebe5c22016c1ce3fc890f3","url":"https://img.federalregister.gov/EP17MR26.019/EP17MR26.019_large.png","height":1239},"medium":{"identifier":"EP17MR26.019","content_type":"image/png","size":58577,"width":468,"sha":"b90fe08d8d5cb0080f1770f5a795f678","url":"https://img.federalregister.gov/EP17MR26.019/EP17MR26.019_medium.png","height":706},"original_size":{"identifier":"EP17MR26.019","content_type":"image/png","size":87591,"width":1769,"sha":"2351f150649c36d6c4848dd1e18fc4d2","url":"https://img.federalregister.gov/EP17MR26.019/EP17MR26.019_original_size.png","height":2667}},"EP17MR26.017":{"large":{"identifier":"EP17MR26.017","content_type":"image/png","size":24989,"width":823,"sha":"822d77a636c8db2a2a13a83c4fd99052","url":"https://img.federalregister.gov/EP17MR26.017/EP17MR26.017_large.png","height":422},"medium":{"identifier":"EP17MR26.017","content_type":"image/png","size":13613,"width":540,"sha":"8a0aa59dca9916df78e0f557b8784fc8","url":"https://img.federalregister.gov/EP17MR26.017/EP17MR26.017_medium.png","height":277},"original_size":{"identifier":"EP17MR26.017","content_type":"image/png","size":14398,"width":2039,"sha":"50722c1a7422d744f9b6c5ef0ecfdade","url":"https://img.federalregister.gov/EP17MR26.017/EP17MR26.017_original_size.png","height":1046}},"EP17MR26.028":{"large":{"identifier":"EP17MR26.028","content_type":"image/png","size":36898,"width":823,"sha":"719af23586b857c9cab136d5b81e4486","url":"https://img.federalregister.gov/EP17MR26.028/EP17MR26.028_large.png","height":356},"medium":{"identifier":"EP17MR26.028","content_type":"image/png","size":19984,"width":517,"sha":"defbc3a5da2f3c35b93c0e47882e7218","url":"https://img.federalregister.gov/EP17MR26.028/EP17MR26.028_medium.png","height":224},"original_size":{"identifier":"EP17MR26.028","content_type":"image/png","size":27172,"width":1949,"sha":"4166549bf8ad32922618d3c15eeb16e8","url":"https://img.federalregister.gov/EP17MR26.028/EP17MR26.028_original_size.png","height":844}},"EP17MR26.018":{"large":{"identifier":"EP17MR26.018","content_type":"image/png","size":99889,"width":823,"sha":"523f28f511feb348573011c41160bcd4","url":"https://img.federalregister.gov/EP17MR26.018/EP17MR26.018_large.png","height":814},"medium":{"identifier":"EP17MR26.018","content_type":"image/png","size":47188,"width":515,"sha":"f4ff06f45cd01f9f363678007f0ac298","url":"https://img.federalregister.gov/EP17MR26.018/EP17MR26.018_medium.png","height":509},"original_size":{"identifier":"EP17MR26.018","content_type":"image/png","size":73826,"width":1947,"sha":"006ba8fc62f400e78ef94d012ac1c344","url":"https://img.federalregister.gov/EP17MR26.018/EP17MR26.018_original_size.png","height":1925}},"EP17MR26.029":{"large":{"identifier":"EP17MR26.029","content_type":"image/png","size":66815,"width":822,"sha":"b5f20e135dfa771341d33910c5373c04","url":"https://img.federalregister.gov/EP17MR26.029/EP17MR26.029_large.png","height":633},"medium":{"identifier":"EP17MR26.029","content_type":"image/png","size":33049,"width":517,"sha":"b54694a8f4fcf309def3ab20f68929a6","url":"https://img.federalregister.gov/EP17MR26.029/EP17MR26.029_medium.png","height":398},"original_size":{"identifier":"EP17MR26.029","content_type":"image/png","size":47852,"width":1949,"sha":"bd44dfad97c7a54115ae3d9af6bd76d4","url":"https://img.federalregister.gov/EP17MR26.029/EP17MR26.029_original_size.png","height":1500}},"EP17MR26.015":{"large":{"identifier":"EP17MR26.015","content_type":"image/png","size":50623,"width":823,"sha":"1e7488034bcb120f12435a0296a9a557","url":"https://img.federalregister.gov/EP17MR26.015/EP17MR26.015_large.png","height":1173},"medium":{"identifier":"EP17MR26.015","content_type":"image/png","size":25782,"width":496,"sha":"e4e82a1adc8268d604c8783ef05b8d3e","url":"https://img.federalregister.gov/EP17MR26.015/EP17MR26.015_medium.png","height":707},"original_size":{"identifier":"EP17MR26.015","content_type":"image/png","size":23539,"width":1872,"sha":"a613579986084c6501171b9a3e58643c","url":"https://img.federalregister.gov/EP17MR26.015/EP17MR26.015_original_size.png","height":2667}},"EP17MR26.026":{"large":{"identifier":"EP17MR26.026","content_type":"image/png","size":60116,"width":822,"sha":"d4277e6fcf3806e25e7b143112c91dda","url":"https://img.federalregister.gov/EP17MR26.026/EP17MR26.026_large.png","height":584},"medium":{"identifier":"EP17MR26.026","content_type":"image/png","size":30136,"width":516,"sha":"b9f2e4da2677cf34b6afa35b5353e335","url":"https://img.federalregister.gov/EP17MR26.026/EP17MR26.026_medium.png","height":367},"original_size":{"identifier":"EP17MR26.026","content_type":"image/png","size":42418,"width":1949,"sha":"723bb0e796dcedff3feafd33c965be9f","url":"https://img.federalregister.gov/EP17MR26.026/EP17MR26.026_original_size.png","height":1385}},"EP17MR26.016":{"large":{"identifier":"EP17MR26.016","content_type":"image/png","size":46204,"width":823,"sha":"36252617d787b5f792dcc01f9cd6c679","url":"https://img.federalregister.gov/EP17MR26.016/EP17MR26.016_large.png","height":1168},"medium":{"identifier":"EP17MR26.016","content_type":"image/png","size":25288,"width":498,"sha":"4a68755b8c31b3ab60cfb712eb6c1d0b","url":"https://img.federalregister.gov/EP17MR26.016/EP17MR26.016_medium.png","height":706},"original_size":{"identifier":"EP17MR26.016","content_type":"image/png","size":23813,"width":1880,"sha":"fe60623046b57496f4f03a6f8000c9ee","url":"https://img.federalregister.gov/EP17MR26.016/EP17MR26.016_original_size.png","height":2667}},"EP17MR26.027":{"large":{"identifier":"EP17MR26.027","content_type":"image/png","size":95062,"width":823,"sha":"f77a28f1ff510385c5105710021420f7","url":"https://img.federalregister.gov/EP17MR26.027/EP17MR26.027_large.png","height":883},"medium":{"identifier":"EP17MR26.027","content_type":"image/png","size":50199,"width":517,"sha":"51371072f57942d35d29ce6c7e3f20a9","url":"https://img.federalregister.gov/EP17MR26.027/EP17MR26.027_medium.png","height":555},"original_size":{"identifier":"EP17MR26.027","content_type":"image/png","size":73173,"width":1949,"sha":"9e8a16d60ae3c0b1670536781a942006","url":"https://img.federalregister.gov/EP17MR26.027/EP17MR26.027_original_size.png","height":2092}}},"json_url":"https://www.federalregister.gov/api/v1/documents/2026-05167?publication_date=2026-03-17","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2026-03-17/2026-05167/mods.xml","not_received_for_publication":null,"page_length":37,"page_views":{"count":2326,"last_updated":"2026-04-05 04:15:04 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2026-03-17/pdf/2026-05167.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2026-05167.pdf?1773665114","publication_date":"2026-03-17","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2026/03/17/2026-05167.txt","regulation_id_number_info":{"2060-AW79":{"issue":"202504","html_url":"https://www.federalregister.gov/regulations/2060-AW79/national-emission-standards-for-hazardous-air-pollutants-ethylene-oxide-emissions-standards-for-ster","title":"National Emission Standards for Hazardous Air Pollutants: Ethylene Oxide Emissions Standards for Sterilization Facilities Residual Risk and Technology Review, Reconsideration","xml_url":"http://www.reginfo.gov/public/do/eAgendaViewRule?pubId=202504&RIN=2060-AW79&operation=OPERATION_EXPORT_XML","priority_category":"Other Significant"}},"regulation_id_numbers":["2060-AW79"],"regulations_dot_gov_info":{"supporting_documents":[{"title":"Risk and Technology Review - Analysis of Demographic Factors For Populations Living Near Commercial Ethylene Oxide Sterilization Operations","document_id":"EPA-HQ-OAR-2019-0178-1591"},{"title":"Ample Margin of Safety Analysis for Ethylene Oxide Commercial Sterilization - Promulgation Rule Review for the Ethylene Oxide Commercial Sterilization Source Category","document_id":"EPA-HQ-OAR-2019-0178-1575"},{"title":"Input Modeling File for EtO Commercial Sterilization Facilities Source Category","document_id":"EPA-HQ-OAR-2019-0178-1572"},{"title":"Cost Memorandum. February 2023.","document_id":"EPA-HQ-OAR-2019-0178-1571"},{"title":"2019 AirToxScreen National Cancer Risk by Pollutant","document_id":"EPA-HQ-OAR-2019-0178-1570"},{"title":"USEPA Webpage: Ethylene Oxide (EtO) Risks and Your Health. Captured March 1, 2024","document_id":"EPA-HQ-OAR-2019-0178-1564"},{"title":"Final Regulatory Flexibility Analysis for National Emission Standards for Hazardous Air Pollutants: Ethylene Oxide Emissions Standards for Sterilization Facilities Residual Risk and Technology Review Final Rule","document_id":"EPA-HQ-OAR-2019-0178-1558"},{"title":"Redline/Strikeout for final amendments to 40 CFR 63 Subpart O: Ethylene Oxide Emissions Standards for Sterilization Facilities","document_id":"EPA-HQ-OAR-2019-0178-1556"},{"title":"Performance Specification 19 - Performance Specifications and Test Procedures for Ethylene Oxide (EtO) Continuous Monitoring Systems (Final)","document_id":"EPA-HQ-OAR-2019-0178-1554"},{"title":"The Healthy Worker Effect in Cancer Incidence Studies. Kirkeleit et al. 2012.","document_id":"EPA-HQ-OAR-2019-0178-1545"}],"regulatory_plan":{"html_url":"https://www.federalregister.gov/regulations/2060-AU37/national-emission-standards-for-hazardous-air-pollutants-ethylene-oxide-commercial-sterilization-and","title":"National Emission Standards for Hazardous Air Pollutants: Ethylene Oxide Commercial Sterilization and Fumigation Operations"},"comments_count":6304,"agency_id":"EPA","comments_url":"https://www.regulations.gov/docketBrowser?rpp=50&so=DESC&sb=postedDate&po=0&dct=PS&D=EPA-HQ-OAR-2019-0178","supporting_documents_count":516,"docket_id":"EPA-HQ-OAR-2019-0178","document_id":"EPA-HQ-OAR-2019-0178-1607","regulation_id_number":"2060-AU37","title":"National Emission Standards for Hazardous Air Pollutants: Commercial Ethylene Oxide Sterilization Technology Review","checked_regulationsdotgov_at":"2026-04-05T09:55:04Z"},"regulations_dot_gov_url":"http://www.regulations.gov/commenton/EPA-HQ-OAR-2019-0178-1607","significant":true,"signing_date":null,"start_page":12700,"subtype":null,"title":"National Emission Standards for Hazardous Air Pollutants: Ethylene Oxide Emissions Standards for Sterilization Facilities Residual Risk and Technology Review Reconsideration","toc_doc":"Ethylene Oxide Emissions Standards for Sterilization Facilities Residual Risk and Technology Review Reconsideration","toc_subject":"National Emission Standards for Hazardous Air Pollutants","topics":["Air pollution control","Environmental protection","Hazardous substances","Reporting and recordkeeping requirements"],"type":"Proposed Rule","volume":91}