{"abstract":"On November 30, 2012, the EPA published in the Federal Register the proposed rule, \"Reconsideration of Certain New Source and Startup/Shutdown Issues: National Emission Standards for Hazardous Air Pollutants from Coal- and Oil-fired Electric Utility Steam Generating Units and Standards of Performance for Fossil-Fuel-Fired Electric Utility, Industrial-Commercial-Institutional, and Small Industrial- Commercial-Institutional Steam Generating Units.\" That proposal opened for reconsideration certain issues, including those related to startup and shutdown. On April 24, 2013, we finalized reconsideration of all the issues included in the proposed rule except those related to startup and shutdown. The EPA is reopening the public comment period for the proposed reconsideration to solicit additional input on specific issues raised during the initial public comment period related to the proposed revisions to the requirements and definitions related to periods of startup and shutdown. The EPA also requests comment on the additional technical analyses it conducted in response to public comments on this subject in Docket ID EPA-HQ-OAR-2009-0234. The National Emission Standards for Hazardous Air Pollutants (NESHAP) rule is referred to as the Mercury and Air Toxics Standards (MATS), and the New Source Performance Standards rule is referred to as the Utility NSPS.","action":"Proposed rule; Reopening of Comment Period.","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/2013/06/25/2013-15146.html","cfr_references":[{"chapter":null,"citation_url":null,"part":60,"title":40},{"chapter":null,"citation_url":null,"part":63,"title":40}],"citation":"78 FR 38001","comment_url":null,"comments_close_on":"2013-08-26","correction_of":null,"corrections":[],"dates":"Comments. Comments must be received on or before August 26, 2013.","disposition_notes":null,"docket_ids":["EPA-HQ-OAR-2009-0234","EPA-HQ-OAR-2011-0044, FRL-9827-1"],"dockets":[],"document_number":"2013-15146","effective_on":null,"end_page":38005,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2013/06/25/2013-15146.xml","html_url":"https://www.federalregister.gov/documents/2013/06/25/2013-15146/reconsideration-of-certain-startupshutdown-issues-national-emission-standards-for-hazardous-air","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2013-15146?publication_date=2013-06-25","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2013-06-25/2013-15146/mods.xml","not_received_for_publication":null,"page_length":5,"page_views":{"count":844,"last_updated":"2026-09-22 02:15:12 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2013-06-25/pdf/2013-15146.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2013-15146.pdf?1372078400","publication_date":"2013-06-25","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2013/06/25/2013-15146.txt","regulation_id_number_info":{"2060-AR62":null},"regulation_id_numbers":["2060-AR62"],"regulations_dot_gov_info":{"supporting_documents":[{"title":"Letter from Lee Zeugin, Hunton & Williams (on behalf of Utility Air Regulatory Group(UARG)), to Lisa Jackson, USEPA","document_id":"EPA-HQ-OAR-2009-0234-9859"},{"title":"Letter from Debra Jezouit, BakerBotts, to Robert J. Wayland, USEPA; Nickel Speciation Testing Conducted at Oil-FIred Electric Utility Steam Generating Units","document_id":"EPA-HQ-OAR-2009-0234-3072"},{"title":"OMB submittal (03/10/11)","document_id":"EPA-HQ-OAR-2009-0234-2996"},{"title":"OMB request (03/09/11)","document_id":"EPA-HQ-OAR-2009-0234-2994"},{"title":"Air Quality Modeling Technical Support Document: Point Source Sector Rules 2-1-2011","document_id":"EPA-HQ-OAR-2009-0234-2988"},{"title":"OMB request (02/28/11)","document_id":"EPA-HQ-OAR-2009-0234-2964"},{"title":"Planned and Projected Retirements","document_id":"EPA-HQ-OAR-2009-0234-2944"},{"title":"Non-Hg Case Study Chronic Inhalation Risk Assessment for the Utility MACT Appropriate and Necessary Analysis","document_id":"EPA-HQ-OAR-2009-0234-2939"},{"title":"The Cost of Mercury Removal from Coal-Based IGCC Relative to a PC Plant","document_id":"EPA-HQ-OAR-2009-0234-2936"},{"title":"AES Beaver Valley Plant Unit 2, Monaca, Pennsylvania, Process Data","document_id":"EPA-HQ-OAR-2009-0234-2722"}],"regulatory_plan":{"html_url":"https://www.federalregister.gov/regulations/2060-AP52/national-emission-standards-for-hazardous-air-pollutants-from-coal-and-oil-fired-electric-utility-st","title":"National Emission Standards for Hazardous Air Pollutants From Coal- and Oil-Fired Electric Utility Steam Generating Units and Standards of Performance for Electric Utility Steam Generating Units"},"comments_url":"https://www.regulations.gov/docketBrowser?rpp=50&so=DESC&sb=postedDate&po=0&dct=PS&D=EPA-HQ-OAR-2009-0234","supporting_documents_count":3622,"docket_id":"EPA-HQ-OAR-2009-0234","regulation_id_number":"2060-AP52","title":"National Emission Standards for Hazardous Air Pollutants for Coal- and Oil-fired Electric Utility Steam Generating Units","checked_regulationsdotgov_at":"2013-08-28T05:00:13Z"},"regulations_dot_gov_url":null,"significant":null,"signing_date":null,"start_page":38001,"subtype":null,"title":"Reconsideration of Certain Startup/Shutdown Issues: National Emission Standards for Hazardous Air Pollutants From Coal- and Oil-Fired Electric Utility Steam Generating Units and Standards of Performance for Fossil-Fuel-Fired Electric Utility, Industrial-Commercial-Institutional, and Small Industrial-Commercial-Institutional Steam Generating Units","toc_doc":"National Emission Standards for Hazardous Air Pollutants From Coal- and Oil-Fired Electric Utility Steam Generating Units, etc.","toc_subject":"Reconsideration of Certain Startup/Shutdown Issues:","topics":["Administrative practice and procedure","Air pollution control","Environmental protection","Hazardous substances","Intergovernmental relations","Reporting and recordkeeping requirements"],"type":"Proposed Rule","volume":78}