Environmental Protection Agency
Based on the Environmental Protection Agency's (EPA's) review of the air quality criteria and the national ambient air quality standards (NAAQS) for particulate matter (PM), the Administrator has reached final decisions on the primary and secondary PM NAAQS. With regard to the primary standards meant to protect against fine particle exposures (i.e., annual and 24-hour PM<INF>2.5</INF> standards), the primary standard meant to protect against coarse particle exposures (i.e., 24-hour PM<INF>10</INF> standard), and the secondary PM<INF>2.5</INF> and PM<INF>10</INF> standards, the EPA is retaining the current standards, without revision.
Document Headings Document headings vary by document type but may contain the following: the agency or agencies that issued and signed a document the number of the CFR title and the number of each part the document amends, proposes to amend, or is directly related to the agency docket number / agency internal file number the RIN which identifies each regulatory action listed in the Unified Agenda of Federal Regulatory and Deregulatory Actions See the Document Drafting Handbook for more details. Environmental Protection Agency 40 CFR Part 50 [EPA-HQ-OAR-2015-0072; FRL-10018-11-OAR] RIN 2060-AS50 AGENCY: Environmental Protection Agency (EPA). ACTION: Final action. SUMMARY: Based on the Environmental Protection Agency's (EPA's) review of the air quality criteria and the national ambient air quality standards (NAAQS) for particulate matter (PM), the Administrator has reached final decisions on the primary and secondary PM NAAQS. With regard to the primary standards meant to protect against fine particle exposures ( i.e., annual and 24-hour PM 2.5 standards), the primary standard meant to protect against coarse particle exposures ( i.e., 24-hour PM 10 standard), and the secondary PM 2.5 and PM 10 standards, the EPA is retaining the current standards, without revision. DATES: This final action is effective December 18, 2020. ADDRESSES: The EPA has established a docket for this action under Docket ID No. EPA-HQ-OAR-2015-0072. Incorporated into this docket is a separate docket established for the Integrated Science Assessment (Docket ID No. EPA-HQ-ORD-2014-0859). All documents in the docket are listed in https://www.regulations.gov/​ . Although listed in the index, some information is not publicly available, e.g., Confidential Business Information (CBI) or other information whose disclosure is restricted by statute. Certain other material, such as copyrighted material, is not placed on the internet and will be publicly available only in hard copy form. With the except…
Other Federal Register documents from the same docket.
Reconsideration of the National Ambient Air Quality Standards for Particulate Matter; Correction
Reconsideration of the National Ambient Air Quality Standards for Particulate Matter
Public Hearing for the Reconsideration of the National Ambient Air Quality Standards for Particulate Matter
Reconsideration of the National Ambient Air Quality Standards for Particulate Matter
Release of the Policy Assessment for the Reconsideration of the National Ambient Air Quality Standards for Particulate Matter
Citation: 85 FR 82684
