{"abstract":"Notice is hereby given that the Environmental Protection Agency (EPA) has designated, in accordance with 40 CFR part 53, one new reference method for measuring concentrations of sulfur dioxide (SO<INF>2</INF>), four new equivalent methods for measuring concentrations of PM<INF>2.5,</INF> PM<INF>10</INF> and PM<INF>10-2.5</INF> in ambient air.","action":"Notice of the designation of a new reference method and four new equivalent methods for monitoring ambient air quality.","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/2016/07/13/2016-16578.html","cfr_references":[],"citation":"81 FR 45284","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":null,"disposition_notes":null,"docket_ids":["FRL 9949-01-ORD"],"dockets":[],"document_number":"2016-16578","effective_on":null,"end_page":45285,"executive_order_notes":null,"executive_order_number":null,"explanation":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2016/07/13/2016-16578.xml","html_url":"https://www.federalregister.gov/documents/2016/07/13/2016-16578/office-of-research-and-development-ambient-air-monitoring-reference-and-equivalent-methods","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2016-16578?publication_date=2016-07-13","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2016-07-13/2016-16578/mods.xml","not_received_for_publication":null,"page_length":2,"page_views":{"count":1454,"last_updated":"2026-04-04 18:15:03 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2016-07-13/pdf/2016-16578.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2016-16578.pdf?1468327736","publication_date":"2016-07-13","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2016/07/13/2016-16578.txt","regulation_id_number_info":{},"regulation_id_numbers":[],"regulations_dot_gov_info":{"supporting_documents":[{"title":"Adequacy Status of the Cleveland/Akron, Ohio and the Columbus, Ohio Submitted 8-Hour Ozone Redesignation and Maintenance Plans for Transportation Conformity Purposes","document_id":"EPA_FRDOC_0001-6733"},{"title":"DELETE","document_id":"EPA_FRDOC_0001-6642"},{"title":"Agency Information Collection Activities; Proposals, Submissions, and Approvals","document_id":"EPA_FRDOC_0001-6334"},{"title":"Literature Search for 2,3,7,8-Tetrachlorodibenzo-p-Dioxin(TCDD) Dose-Response Studies for Use in an Upcoming Expert Panel Workshop","document_id":"EPA_FRDOC_0001-6019"},{"title":"Regulatory Agenda Semiannual Regulatory Agenda","document_id":"EPA_FRDOC_0001-6015"},{"title":"Correction to MVEBs for the Indiana and Ohio Portions of the Cincinnati-Hamilton, Ohio/Kentucky/Indiana, Submitted 8-Hour Ozone Attainment Demonstration","document_id":"EPA_FRDOC_0001-5132"},{"title":"Pesticides; tolerances in food, animal feeds, and raw agricultural commodities: Pyriproxyfen","document_id":"EPA_FRDOC_0001-3649"}],"comments_url":"https://www.regulations.gov/docketBrowser?rpp=50&so=DESC&sb=postedDate&po=0&dct=PS&D=EPA_FRDOC_0001","supporting_documents_count":7,"docket_id":"EPA_FRDOC_0001","regulation_id_number":null,"title":"Recently Posted EPA Rules and Notices from FR Feed.","checked_regulationsdotgov_at":"2016-08-02T06:00:23Z"},"regulations_dot_gov_url":null,"significant":null,"signing_date":null,"start_page":45284,"subtype":null,"title":"Office of Research and Development; Ambient Air Monitoring Reference and Equivalent Methods: Designation of One New Reference Method and Four New Equivalent Methods","toc_doc":"Designation of One New Reference Method and Four New Equivalent Methods","toc_subject":"Ambient Air Monitoring Reference and Equivalent Methods:","topics":[],"type":"Notice","volume":81}