{"abstract":"The U.S. Environmental Protection Agency (EPA) published a final rule in the Federal Register on March 26, 2020, to complete the residual risk and technology review (RTR) for the Municipal Solid Waste (MSW) Landfills source category as regulated under national emission standards for hazardous air pollutants (NESHAP). The final rule also made minor changes to the 2016 MSW Landfills New Source Performance Standards (NSPS) and Emission Guidelines and Compliance Times for MSW Landfills to improve implementation of the sets of rules affecting MSW landfills. In this action, the EPA is proposing technical revisions and clarifications for the NESHAP for MSW Landfills established in the March 26, 2020, final rule. These changes correct inadvertent errors and clarify wellhead monitoring requirements for the purpose of identifying excess air infiltration; delegation of authority to state, local, or tribal agencies for \"emission standards\"; applicability of the General Provisions to affected MSW landfills; and handling of monitoring data for combustion devices during periods of monitoring system breakdowns, repairs, calibration checks, and adjustments. We are proposing further amendments to the 2016 MSW Landfills NSPS to clarify and align the timing of compliance for certain requirements of the 2016 MSW Landfills NSPS for existing MSW landfills that have modified but previously triggered the requirement to install a gas collection and control system (GCCS) under related MSW landfill rules.","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/2021/04/13/2021-07566.html","cfr_references":[{"chapter":null,"citation_url":null,"part":"60","title":40},{"chapter":null,"citation_url":null,"part":"63","title":40}],"citation":"86 FR 19176","comment_url":null,"comments_close_on":"2021-05-28","correction_of":null,"corrections":[],"dates":"Comments. Comments must be received on or before May 28, 2021. 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 May 13, 2021.","disposition_notes":null,"docket_ids":["EPA-HQ-OAR-2002-0047","FRL-10012-39-OAR"],"dockets":[{"supporting_documents":[{"title":"National Emission Standards for Hazardous Air Pollutants: Municipal Solid Waste Landfills Residual Risk and Technology Review; Correction. Signed version","document_id":"EPA-HQ-OAR-2002-0047-0196"},{"title":"MSWLFs corrections RTC 09 21 21","document_id":"EPA-HQ-OAR-2002-0047-0195"},{"title":"E. Repa, National Solid Wastes Management Association (NSWMA) Comments on supplemental notice [A-98-28-IV-L-6]","document_id":"EPA-HQ-OAR-2002-0047-0165"},{"title":"M. Gilliland, Oregon DEQ. Comments on supplemental notice [A-98-28-IV-L-5]","document_id":"EPA-HQ-OAR-2002-0047-0164"},{"title":"Emerging Technologies for the management and Utilization of Landfill  Gas. Prepared by EPA National Risk Management Research Laboratory. EPA-600/R-98-021 [A-98-28-IV-K-8]","document_id":"EPA-HQ-OAR-2002-0047-0157"},{"title":"Anaerobic Digestion of Organic Solid Waste in Bioreactor Landfills D. Reinhart, A. Al-Yousfi, and B. Pohland. Submitted as an attachment to item IV-K-12 [A-98-28-IV-K-7]","document_id":"EPA-HQ-OAR-2002-0047-0156"},{"title":"M. Laur, EPA:WCPG, to G. Hater, Waste Management. Acknowledgment of receipt of June 25, 2001 letter, with letter attached [A-98-28-IV-K-6]","document_id":"EPA-HQ-OAR-2002-0047-0155"},{"title":"R. Mead, ERG, Inc., to M. Laur EPA:ESD. Memorandum: Comparison of Emissions from Bioreactors and Conventional Municipal Solid Waste Landfills [A-98-28-IV-K-5]","document_id":"EPA-HQ-OAR-2002-0047-0154"},{"title":"S. McClutchey, ERG, Inc., to M. Laur EPA: ESD. Memorandum: MACT Floor for Bioreactor Landfill Operations [A-98-28-IV-K-3]","document_id":"EPA-HQ-OAR-2002-0047-0152"},{"title":"Statement ICR No. 1938.01 -- National Emission Standards for Hazardous Air Pollutants from Municipal Solid Waste Landfills (Subpart AAAA) and OMB Form 83-1 [A-98-28-IV-H-1]","document_id":"EPA-HQ-OAR-2002-0047-0149"}],"agency_name":"EPA","documents":[{"comment_count":2,"comment_start_date":"2021-04-13","updated_at":"2023-02-28T22:31:55.404-05:00","comment_url":"https://www.regulations.gov/commenton/EPA-HQ-OAR-2002-0047-0146","allow_late_comments":null,"id":"EPA-HQ-OAR-2002-0047-0146","comment_end_date":"2021-05-29","regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":105,"id":"EPA-HQ-OAR-2002-0047","title":"National Emission Standards for Hazardous Air Pollutants: Municipal Solid Waste Landfills"}],"document_number":"2021-07566","effective_on":null,"end_page":19184,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2021/04/13/2021-07566.xml","html_url":"https://www.federalregister.gov/documents/2021/04/13/2021-07566/national-emission-standards-for-hazardous-air-pollutants-municipal-solid-waste-landfills-residual","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2021-07566?publication_date=2021-04-13","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2021-04-13/2021-07566/mods.xml","not_received_for_publication":null,"page_length":9,"page_views":{"count":1900,"last_updated":"2026-09-21 18:15:06 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2021-04-13/pdf/2021-07566.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2021-07566.pdf?1618231535","publication_date":"2021-04-13","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2021/04/13/2021-07566.txt","regulation_id_number_info":{"2060-AV01":{"issue":"202110","html_url":"https://www.federalregister.gov/regulations/2060-AV01/national-emission-standards-for-hazardous-air-pollutants-municipal-solid-waste-landfills-residual-ri","title":"National Emission Standards for Hazardous Air Pollutants: Municipal Solid Waste Landfills Residual Risk and Technology Review; Correction","xml_url":"http://www.reginfo.gov/public/do/eAgendaViewRule?pubId=202110&RIN=2060-AV01&operation=OPERATION_EXPORT_XML","priority_category":"Substantive, Nonsignificant"}},"regulation_id_numbers":["2060-AV01"],"regulations_dot_gov_info":{"supporting_documents":[{"title":"National Emission Standards for Hazardous Air Pollutants: Municipal Solid Waste Landfills Residual Risk and Technology Review; Correction. 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