{"abstract":"Based on the Environmental Protection Agency's (EPA's) reconsideration of the air quality criteria and the national ambient air quality standards (NAAQS) for particulate matter (PM), the EPA is revising the primary annual PM<INF>2.5</INF> standard by lowering the level from 12.0 [micro]g/m\\3\\ to 9.0 [micro]g/m\\3\\. The Agency is retaining the current primary 24-hour PM<INF>2.5</INF> standard and the primary 24-hour PM<INF>10</INF> standard. The Agency also is not changing the secondary 24-hour PM<INF>2.5</INF> standard, secondary annual PM<INF>2.5</INF> standard, and secondary 24-hour PM<INF>10</INF> standard at this time. The EPA is also finalizing revisions to other key aspects related to the PM NAAQS, including revisions to the Air Quality Index (AQI) and monitoring requirements for the PM 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/2024/03/06/2024-02637.html","cfr_references":[{"chapter":null,"citation_url":null,"part":"50","title":40},{"chapter":null,"citation_url":null,"part":"53","title":40},{"chapter":null,"citation_url":null,"part":"58","title":40}],"citation":"89 FR 16202","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"This final rule is effective May 6, 2024.","disposition_notes":null,"docket_ids":["EPA-HQ-OAR-2015-0072","FRL-8635-02-OAR"],"dockets":[{"supporting_documents":[{"title":"PM NAAQS Response to Comments Document FINAL","document_id":"EPA-HQ-OAR-2015-0072-6010"},{"title":"OMB Mtg w MI Chamber of Commerce 12 13 2023","document_id":"EPA-HQ-OAR-2015-0072-5993"},{"title":"OMB Mtg w AZ Farm Bureau 12 13 2023","document_id":"EPA-HQ-OAR-2015-0072-5992"},{"title":"OMB Mtg w Pulp n Paper 12.7.23","document_id":"EPA-HQ-OAR-2015-0072-5987"},{"title":"OMB Mtg w AAPCA EPA Attendees 11 27 23","document_id":"EPA-HQ-OAR-2015-0072-5983"},{"title":"OMB Mtg w Alliance of Nurses EPA Attendees 10 27 23","document_id":"EPA-HQ-OAR-2015-0072-5977"},{"title":"OMB Mtg w US Chamber of Commerce EPA Attendees 10 25 23","document_id":"EPA-HQ-OAR-2015-0072-5972"},{"title":"Tao B, Li Z, Wang Y, Wu J, Shi X, Shi J, Liu Q, Wang J. Environment pollutants exposure affects the endogenous activation of within-host Mycobacterium tuberculosis. Environ Res. 2023 Mar 21;227:115695. doi: 10.1016/j.envres.2023.115695","document_id":"EPA-HQ-OAR-2015-0072-5957"},{"title":"Ulziikhuu B, Gombojav E, Banzrai C, Batsukh S, Enkhtuya E, Boldbaatar B, Bellinger DC, Lanphear BP, McCandless LC, Tamana SK, Allen RW. Portable HEPA Filter Air Cleaner Use during Pregnancy and Children's Cognitive Performance at Four Years of Age: The UGAAR Randomized Controlled Trial. Environ Health Perspect. 2022 Jun;130(6):67006. doi: 10.1289/EHP10302","document_id":"EPA-HQ-OAR-2015-0072-5955"},{"title":"Memorandum Of Understanding Between The United States Department Of Agriculture Forest Service And The United States Department Of The Interior And The United States Environmental Protection Agency And The United States Centers For Disease Control And Prevention. 2023. Wildland Fire and Air Quality Coordination","document_id":"EPA-HQ-OAR-2015-0072-5928"}],"agency_name":"EPA","documents":[{"comment_count":null,"comment_start_date":null,"updated_at":"2024-03-06T08:56:48.583-05:00","comment_url":"https://www.regulations.gov/commenton/EPA-HQ-OAR-2015-0072-5839","allow_late_comments":null,"id":"EPA-HQ-OAR-2015-0072-5839","comment_end_date":null,"regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":885,"id":"EPA-HQ-OAR-2015-0072","title":"Review of the National Ambient Air Quality Standards for Particulate Matter"}],"document_number":"2024-02637","effective_on":"2024-05-06","end_page":16406,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2024/03/06/2024-02637.xml","html_url":"https://www.federalregister.gov/documents/2024/03/06/2024-02637/reconsideration-of-the-national-ambient-air-quality-standards-for-particulate-matter","images":{"ER06MR24.050":{"large":"https://img.federalregister.gov/ER06MR24.050/ER06MR24.050_large.png","medium":"https://img.federalregister.gov/ER06MR24.050/ER06MR24.050_medium.png","original_size":"https://img.federalregister.gov/ER06MR24.050/ER06MR24.050_original_size.png"},"ER06MR24.034":{"large":"https://img.federalregister.gov/ER06MR24.034/ER06MR24.034_large.png","medium":"https://img.federalregister.gov/ER06MR24.034/ER06MR24.034_medium.png","original_size":"https://img.federalregister.gov/ER06MR24.034/ER06MR24.034_original_size.png"},"ER06MR24.045":{"large":"https://img.federalregister.gov/ER06MR24.045/ER06MR24.045_large.png","medium":"https://img.federalregister.gov/ER06MR24.045/ER06MR24.045_medium.png","original_size":"https://img.federalregister.gov/ER06MR24.045/ER06MR24.045_original_size.png"},"ER06MR24.033":{"large":"https://img.federalregister.gov/ER06MR24.033/ER06MR24.033_large.png","medium":"https://img.federalregister.gov/ER06MR24.033/ER06MR24.033_medium.png","original_size":"https://img.federalregister.gov/ER06MR24.033/ER06MR24.033_original_size.png"},"ER06MR24.044":{"large":"https://img.federalregister.gov/ER06MR24.044/ER06MR24.044_large.png","medium":"https://img.federalregister.gov/ER06MR24.044/ER06MR24.044_medium.png","original_size":"https://img.federalregister.gov/ER06MR24.044/ER06MR24.044_original_size.png"},"ER06MR24.036":{"large":"https://img.federalregister.gov/ER06MR24.036/ER06MR24.036_large.png","medium":"https://img.federalregister.gov/ER06MR24.036/ER06MR24.036_medium.png","original_size":"https://img.federalregister.gov/ER06MR24.036/ER06MR24.036_original_size.png"},"ER06MR24.047":{"large":"https://img.federalregister.gov/ER06MR24.047/ER06MR24.047_large.png","medium":"https://img.federalregister.gov/ER06MR24.047/ER06MR24.047_medium.png","original_size":"https://img.federalregister.gov/ER06MR24.047/ER06MR24.047_original_size.png"},"ER06MR24.035":{"large":"https://img.federalregister.gov/ER06MR24.035/ER06MR24.035_large.png","medium":"https://img.federalregister.gov/ER06MR24.035/ER06MR24.035_medium.png","original_size":"https://img.federalregister.gov/ER06MR24.035/ER06MR24.035_original_size.png"},"ER06MR24.046":{"large":"https://img.federalregister.gov/ER06MR24.046/ER06MR24.046_large.png","medium":"https://img.federalregister.gov/ER06MR24.046/ER06MR24.046_medium.png","original_size":"https://img.federalregister.gov/ER06MR24.046/ER06MR24.046_original_size.png"},"ER06MR24.030":{"large":"https://img.federalregister.gov/ER06MR24.030/ER06MR24.030_large.png","medium":"https://img.federalregister.gov/ER06MR24.030/ER06MR24.030_medium.png","original_size":"https://img.federalregister.gov/ER06MR24.030/ER06MR24.030_original_size.png"},"ER06MR24.041":{"large":"https://img.federalregister.gov/ER06MR24.041/ER06MR24.041_large.png","medium":"https://img.federalregister.gov/ER06MR24.041/ER06MR24.041_medium.png","original_size":"https://img.federalregister.gov/ER06MR24.041/ER06MR24.041_original_size.png"},"ER06MR24.040":{"large":"https://img.federalregister.gov/ER06MR24.040/ER06MR24.040_large.png","medium":"https://img.federalregister.gov/ER06MR24.040/ER06MR24.040_medium.png","original_size":"https://img.federalregister.gov/ER06MR24.040/ER06MR24.040_original_size.png"},"ER06MR24.051":{"large":"https://img.federalregister.gov/ER06MR24.051/ER06MR24.051_large.png","medium":"https://img.federalregister.gov/ER06MR24.051/ER06MR24.051_medium.png","original_size":"https://img.federalregister.gov/ER06MR24.051/ER06MR24.051_original_size.png"},"ER06MR24.032":{"large":"https://img.federalregister.gov/ER06MR24.032/ER06MR24.032_large.png","medium":"https://img.federalregister.gov/ER06MR24.032/ER06MR24.032_medium.png","original_size":"https://img.federalregister.gov/ER06MR24.032/ER06MR24.032_original_size.png"},"ER06MR24.043":{"large":"https://img.federalregister.gov/ER06MR24.043/ER06MR24.043_large.png","medium":"https://img.federalregister.gov/ER06MR24.043/ER06MR24.043_medium.png","original_size":"https://img.federalregister.gov/ER06MR24.043/ER06MR24.043_original_size.png"},"ER06MR24.031":{"large":"https://img.federalregister.gov/ER06MR24.031/ER06MR24.031_large.png","medium":"https://img.federalregister.gov/ER06MR24.031/ER06MR24.031_medium.png","original_size":"https://img.federalregister.gov/ER06MR24.031/ER06MR24.031_original_size.png"},"ER06MR24.042":{"large":"https://img.federalregister.gov/ER06MR24.042/ER06MR24.042_large.png","medium":"https://img.federalregister.gov/ER06MR24.042/ER06MR24.042_medium.png","original_size":"https://img.federalregister.gov/ER06MR24.042/ER06MR24.042_original_size.png"},"ER06M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