{"abstract":"The EPA is amending the requirements for particulate matter less than 2.5 micrometers (PM<INF>2.5</INF>) under the Prevention of Significant Deterioration (PSD) program by adding maximum allowable increases in ambient pollutant concentrations (\"increments\") and two screening tools, known as the Significant Impact Levels (SILs) and a Significant Monitoring Concentration (SMC) for PM<INF>2.5</INF>. The SILs for PM<INF>2.5</INF> are also being added to two other New Source Review (NSR) rules that regulate the construction and modification of any major stationary source locating in an attainment or unclassifiable area, where the source's emissions may cause or contribute to a violation of the national ambient air quality standards (NAAQS).","action":"Final 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/2010/10/20/2010-25132.html","cfr_references":[{"chapter":null,"citation_url":null,"part":51,"title":40},{"chapter":null,"citation_url":null,"part":52,"title":40}],"citation":"75 FR 64864","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"This final rule is effective on December 20, 2010.","disposition_notes":null,"docket_ids":["EPA-HQ-OAR-2006-0605","FRL-9210-9"],"dockets":[],"document_number":"2010-25132","effective_on":"2010-12-20","end_page":64907,"executive_order_notes":null,"executive_order_number":null,"explanation":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2010/10/20/2010-25132.xml","html_url":"https://www.federalregister.gov/documents/2010/10/20/2010-25132/prevention-of-significant-deterioration-psd-for-particulate-matter-less-than-25-micrometers","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2010-25132?publication_date=2010-10-20","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2010-10-20/2010-25132/mods.xml","not_received_for_publication":null,"page_length":44,"page_views":{"count":3864,"last_updated":"2026-04-04 14:15:05 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2010-10-20/pdf/2010-25132.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":null,"publication_date":"2010-10-20","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2010/10/20/2010-25132.txt","regulation_id_number_info":{"2060-AO24":{"issue":"201010","html_url":"https://www.federalregister.gov/regulations/2060-AO24/prevention-of-significant-deterioration-for-pm2-5-increments-significant-impact-levels-and-significa","title":"Prevention of Significant Deterioration for PM2.5?Increments, Significant Impact Levels, and Significant Monitoring Concentrations","xml_url":"http://www.reginfo.gov/public/do/eAgendaViewRule?pubId=201010&RIN=2060-AO24&operation=OPERATION_EXPORT_XML","priority_category":"Other Significant"}},"regulation_id_numbers":["2060-AO24"],"regulations_dot_gov_info":{"supporting_documents":[{"title":"Petition Response Dated 8/28/14 to S. Conklin, Assistant Attorney General, North Carolina Department of Justice from G. McCarthy, Administrator - Responds to a Petition Dated 12/23/13","document_id":"EPA-HQ-OAR-2006-0605-0068"},{"title":"Petition Response Dated 8/28/14 to B. Manard, Special Deputy Attorney General, North Carolina Department of Justice from G. McCarthy, Administrator - Responds to a Petition Dated 12/23/13","document_id":"EPA-HQ-OAR-2006-0605-0067"},{"title":"Petition Response Dated 8/28/14 to R. Cooper, Attorney General, North Carolina Department of Justice from G. McCarthy, Administrator - Responds to a Petition Dated 12/23/13","document_id":"EPA-HQ-OAR-2006-0605-0066"},{"title":"Petition for Reconsideration and Amended Rulemaking Dated 12/23/13 from the State of North Carolina to G. McCarthy, Administrator, US EPA","document_id":"EPA-HQ-OAR-2006-0605-0065"},{"title":"Letter dated 8/28/14 From G. McCarthy, Administrator, US EPA Responding to J. Skvarla, III, North Carolina Department of Environment and Natural Resources 8/22/13 Letter","document_id":"EPA-HQ-OAR-2006-0605-0064"},{"title":"Letter dated 8/22/13 from J. Skvarla, III, North Carolina Department of Environment and Natural Resources to G. McCarthy, Administrator, US EPA","document_id":"EPA-HQ-OAR-2006-0605-0063"},{"title":"Prevention of Significant Deterioration (PSD) for Particulate Matter Less Than 2.5 Micrometers (PM2.5) - Increments, Significant Impact Levels (SILs) and Significant Monitoring Concentration (SMC) - Response to Comments","document_id":"EPA-HQ-OAR-2006-0605-0059"},{"title":"Formal OMB Submittal Package - Revisions Made in Response to OMB Comments to Draft Final of Prevention of Significant Deterioration (PSD) for Particulate Matter Less Than 2.5 Micrometers (PM2.5) – Increments, Significant Impact Levels (SILs) and Significa","document_id":"EPA-HQ-OAR-2006-0605-0058"},{"title":"Formal OMB Submittal Package - Draft Final of Prevention of Significant Deterioration (PSD) for Particulate Matter Less Than 2.5 Micrometers (PM2.5) – Increments, Significant Impact Levels (SILs) and Significant Monitoring Concentration (SMC) submitted on","document_id":"EPA-HQ-OAR-2006-0605-0057"},{"title":"Memorandum from Crumpler, D., USEPA/AQAD/AAMG, to Rao, R., USEPA/AQPD/NSRG, on PSD Monitoring De Minimis Concentration for PM2.5; March 12, 2009","document_id":"EPA-HQ-OAR-2006-0605-0056"}],"comments_url":"https://www.regulations.gov/docketBrowser?rpp=50&so=DESC&sb=postedDate&po=0&dct=PS&D=EPA-HQ-OAR-2006-0605","supporting_documents_count":18,"docket_id":"EPA-HQ-OAR-2006-0605","regulation_id_number":null,"title":"Prevention of Significant Deterioration for PM2.5 - Increments, Significant Impact Levels and Significant Monitoring Concentrations ","checked_regulationsdotgov_at":"2010-11-09T08:04:03Z"},"regulations_dot_gov_url":null,"significant":true,"signing_date":null,"start_page":64864,"subtype":null,"title":"Prevention of Significant Deterioration (PSD) for Particulate Matter Less Than 2.5 Micrometers (PM2.5)-Increments, Significant Impact Levels (SILs) and Significant Monitoring Concentration (SMC)","toc_doc":"Increments, Significant Impact Levels and Significant Monitoring Concentration","toc_subject":"Prevention of Significant Deterioration for Particulate Matter Less Than 2.5 Micrometers:","topics":["Administrative practice and procedure","Air pollution control","Environmental protection","Intergovernmental relations"],"type":"Rule","volume":75}