{"abstract":"This action proposes amendments to the national emission standards for hazardous air pollutants (NESHAP) for mercury emissions from mercury cell chlor-alkali plants. This NESHAP (hereafter called the \"2003 Mercury Cell MACT\") limited mercury air emissions from these plants. Following promulgation of the 2003 Mercury Cell Maximum Achievable Control Technology (MACT) NESHAP, EPA received a petition to reconsider several aspects of the rule from the Natural Resources Defense Council (NRDC). NRDC also filed a petition for judicial review of the rule in the U.S. Court of Appeals for the DC Circuit. By a letter dated April 8, 2004, EPA granted NRDC's petition for reconsideration, and on July 20, 2004, the Court placed the petition for judicial review in abeyance pending EPA's action on reconsideration. This action is EPA's proposed response to NRDC's petition for reconsideration. We are not proposing any amendments to the control and monitoring requirements for stack emissions of mercury established by the 2003 Mercury Cell MACT. This proposed rule would amend the requirements for cell room fugitive mercury emissions to require work practice standards for the cell rooms and to require instrumental monitoring of cell room fugitive mercury emissions. This proposed rule would also amend aspects of these work practice standards and would correct errors and inconsistencies in the 2003 Mercury Cell MACT that have been brought to our attention.","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/2008/06/11/E8-12618.html","cfr_references":[{"chapter":null,"citation_url":null,"part":63,"title":40}],"citation":"73 FR 33258","comment_url":null,"comments_close_on":"2008-08-11","correction_of":null,"corrections":[],"dates":"Comments. Comments must be received on or before August 11, 2008.","disposition_notes":null,"docket_ids":["EPA-HQ-OAR-2002-0017","FRL-8576-3"],"dockets":[],"document_number":"E8-12618","effective_on":null,"end_page":33282,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2008/06/11/E8-12618.xml","html_url":"https://www.federalregister.gov/documents/2008/06/11/E8-12618/national-emission-standards-for-hazardous-air-pollutants-mercury-emissions-from-mercury-cell","images":{"EP11JN08.002":{"large":"https://img.federalregister.gov/EP11JN08.002/EP11JN08.002_large.png","medium":"https://img.federalregister.gov/EP11JN08.002/EP11JN08.002_medium.png","original_size":"https://img.federalregister.gov/EP11JN08.002/EP11JN08.002_original_size.png"}},"images_metadata":{"EP11JN08.002":{"large":{"identifier":"EP11JN08.002","content_type":"image/png","size":48222,"width":823,"sha":"9f12ac2465fd816babf63c189bc926ba","url":"https://img.federalregister.gov/EP11JN08.002/EP11JN08.002_large.png","height":796},"medium":{"identifier":"EP11JN08.002","content_type":"image/png","size":24616,"width":505,"sha":"6b579d5d301e14d8d7c0e3d25287f784","url":"https://img.federalregister.gov/EP11JN08.002/EP11JN08.002_medium.png","height":489},"original_size":{"identifier":"EP11JN08.002","content_type":"image/png","size":40859,"width":1908,"sha":"f528b54f34ebb4f22e92172c8e5fbf46","url":"https://img.federalregister.gov/EP11JN08.002/EP11JN08.002_original_size.png","height":1846}}},"json_url":"https://www.federalregister.gov/api/v1/documents/E8-12618?publication_date=2008-06-11","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2008-06-11/E8-12618/mods.xml","not_received_for_publication":null,"page_length":25,"page_views":{"count":224,"last_updated":"2026-09-20 22:15:05 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2008-06-11/pdf/E8-12618.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":null,"publication_date":"2008-06-11","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2008/06/11/E8-12618.txt","regulation_id_number_info":{"2060-AN99":{"issue":"201110","html_url":"https://www.federalregister.gov/regulations/2060-AN99/neshap-mercury-cell-chlor-alkali-plants-amendments","title":"NESHAP: Mercury Cell Chlor-Alkali Plants--Amendments","xml_url":"http://www.reginfo.gov/public/do/eAgendaViewRule?pubId=201110&RIN=2060-AN99&operation=OPERATION_EXPORT_XML","priority_category":"Other Significant"}},"regulation_id_numbers":["2060-AN99"],"regulations_dot_gov_info":{"checked_regulationsdotgov_at":"2011-11-14T07:26:24Z"},"regulations_dot_gov_url":null,"significant":true,"signing_date":null,"start_page":33258,"subtype":null,"title":"National Emission Standards for Hazardous Air Pollutants: Mercury Emissions from Mercury Cell Chlor-Alkali Plants","toc_doc":"Mercury Emissions from Mercury Cell Chlor-Alkali Plants","toc_subject":"National Emission Standards for Hazardous Air Pollutants:","topics":["Air pollution control","Environmental protection","Hazardous substances","Incorporation by reference","Reporting and recordkeeping requirements"],"type":"Proposed Rule","volume":73}