{"abstract":"On January 31, 2013, the U.S. Environmental Protection Agency (EPA) finalized amendments to the national emission standards (NESHAP) for the control of hazardous air pollutants (HAP) at major sources from new and existing industrial, commercial, and institutional (ICI) boilers and process heaters. Subsequently, the United States Court of Appeals for the District of Columbia Circuit (D.C. Circuit), in a decision issued in July 2016, remanded several of the emission standards to the EPA based on the court's review of the EPA's approach to setting those standards. In response to these remands, this action proposes to amend several numeric emission limits for new and existing boilers and process heaters consistent with the court's opinion and set compliance dates for these new emission limits. The court also remanded for further explanation the Agency's use of carbon monoxide (CO) as a surrogate for organic HAP and, in a subsequent decision in March 2018, remanded for further explanation the Agency's use of a CO threshold to represent the application of the maximum achievable control technology (MACT) for organic HAP. The proposed changes to the emissions limits will protect air quality and promote public health by reducing emissions of the HAP listed in the Clean Air Act (CAA). This action also addresses the two issues remanded to the EPA for further explanation. We are also proposing several technical clarifications and corrections.","action":"Proposed 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/2020/08/24/2020-15121.html","cfr_references":[{"chapter":null,"citation_url":null,"part":"63","title":40}],"citation":"85 FR 52198","comment_url":null,"comments_close_on":"2020-10-23","correction_of":null,"corrections":[],"dates":"Comments. Comments must be received on or before October 23, 2020. 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 September 23, 2020.","disposition_notes":null,"docket_ids":["EPA-HQ-OAR-2002-0058","FRL-10010-81-OAR"],"dockets":[{"supporting_documents":[{"title":"Surrogacy Testing in the MPCRF - Final Report","document_id":"EPA-HQ-OAR-2002-0058-3942"},{"title":"Response to 2015 Reconsideration Comments for Industrial, Commercial, and Institutional Boilers and Process Heaters NESHAP","document_id":"EPA-HQ-OAR-2002-0058-3937"},{"title":"CIBO Letter Revising Petition for Reconsideration","document_id":"EPA-HQ-OAR-2002-0058-3895"},{"title":"Email from EPA/CAMD, dated May 7, 2014, transmitting an analysis of the time it takes some industrial boilers to operate their controls during startup","document_id":"EPA-HQ-OAR-2002-0058-3893"},{"title":"OMB to USEPA Correspondence (2) on December 20, 2012","document_id":"EPA-HQ-OAR-2002-0058-3873"},{"title":"November 28, 2012 OMB to USEPA Correspondence","document_id":"EPA-HQ-OAR-2002-0058-3867"},{"title":"Meeting Materials from OMB E.O. 12866 Regulatory Review with CIBO on December 18, 2012","document_id":"EPA-HQ-OAR-2002-0058-3844"},{"title":"October 17, 2011 Email from Brian Shrager, USEPA, to: C. 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Agenda for October 17 OMB Briefing","document_id":"EPA-HQ-OAR-2002-0058-3411"},{"title":"Revised MACT Floor Analysis (November 2011) for the Industrial, Commercial, and Institutional Boilers and Process Heaters National Emission Standards for Hazardous Air Pollutants – Major Source","document_id":"EPA-HQ-OAR-2002-0058-3387"},{"title":"Revision of Alternate Equivalent Output-Based Emission Limits for Boilers and Process Heaters located at Major Source Facilities","document_id":"EPA-HQ-OAR-2002-0058-3376"}],"agency_name":null,"documents":[{"comment_count":17,"comment_start_date":"2020-08-24","updated_at":"2023-02-28T22:50:04.757-05:00","comment_url":"https://www.regulations.gov/commenton/EPA-HQ-OAR-2002-0058-3943","allow_late_comments":null,"id":"EPA-HQ-OAR-2002-0058-3943","comment_end_date":"2020-10-24","regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":849,"id":"EPA-HQ-OAR-2002-0058","title":"National Emission Standards for Hazardous Air Pollutants for 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