{"abstract":"This action finalizes amendments to the national emission standards for hazardous air pollutants (NESHAP) for the Coal- and Oil- Fired Electric Utility Steam Generating Units (EGUs) source category. These final amendments are the result of the EPA's review of the 2020 Residual Risk and Technology Review (RTR). The changes, which were proposed under the technology review in April 2023, include amending the filterable particulate matter (fPM) surrogate emission standard for non-mercury metal hazardous air pollutants (HAP) for existing coal- fired EGUs, the fPM emission standard compliance demonstration requirements, and the mercury (Hg) emission standard for lignite-fired EGUs. Additionally, the EPA is finalizing a change to the definition of \"startup.\" The EPA did not propose, and is not finalizing, any changes to the 2020 Residual Risk Review.","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/2024/05/07/2024-09148.html","cfr_references":[{"chapter":null,"citation_url":null,"part":63,"title":40}],"citation":"89 FR 38508","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"This final rule is effective on July 8, 2024. The incorporation by reference of certain material listed in the rule was approved by the Director of the Federal Register as of April 16, 2012.","disposition_notes":null,"docket_ids":["EPA-HQ-OAR-2018-0794","FRL-6716.3-02-OAR"],"dockets":[{"supporting_documents":[{"title":"Measuring the Impacts of Teachers II: Teacher Value-Added and Student Outcomes in Adulthood.","document_id":"EPA-HQ-OAR-2018-0794-6941"},{"title":"Emergent Risks and Key Vulnerabilities In Climate Change 2014: Impacts, Adaptation, and Vulnerability. Part A: Global and Sectoral Aspects. Contribution of Working Group II to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change","document_id":"EPA-HQ-OAR-2018-0794-6939"},{"title":"NEEDS for EPA's Power Sector Modeling Platform 2023.","document_id":"EPA-HQ-OAR-2018-0794-6924"},{"title":"Documentation of changes made during OMB Review Under EO 12866 - MATS Review of the RTR Final Rulemaking. E-mail for Passback #3. 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April 9, 2024.","document_id":"EPA-HQ-OAR-2018-0794-6914"},{"title":"Westwood fPM Stack Test Compliance Data","document_id":"EPA-HQ-OAR-2018-0794-6899"},{"title":"Sandy Creek fPM Stack Test Compliance Data","document_id":"EPA-HQ-OAR-2018-0794-6898"},{"title":"Colstrip fPM Stack Test Compliance Data","document_id":"EPA-HQ-OAR-2018-0794-6892"},{"title":"Twin Oaks Power Station Unit 1 Performance Test Report (November 16, 2023)","document_id":"EPA-HQ-OAR-2018-0794-6870"}],"agency_name":"EPA","documents":[{"comment_count":null,"comment_start_date":null,"updated_at":"2024-05-07T09:57:05.352-04:00","comment_url":"https://www.regulations.gov/commenton/EPA-HQ-OAR-2018-0794-6822","allow_late_comments":null,"id":"EPA-HQ-OAR-2018-0794-6822","comment_end_date":null,"regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":776,"id":"EPA-HQ-OAR-2018-0794","title":"National Emission Standards for Hazardous Air Pollutants: Coal- and Oil-Fired Electric Utility Steam Generating Units - Additional Post-Promulgation 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