2060-AR57 201710 The Regulatory Plan and the Unified Agenda of Federal Regulatory and Deregulatory Actions 2060 Office of Air and Radiation OAR 2000 Environmental Protection Agency EPA Review of the Primary National Ambient Air Quality Standards for Oxides of Nitrogen

Under the Clean Air Act, as amended, the EPA is required to review and if appropriate revise the air quality criteria and national ambient air quality standards (NAAQS) every five years. On February 9, 2010, the EPA published a final rule revising the primary (health-based) NO2 NAAQS to provide increased protection for public health. This review includes the preparation of an Integrated Review Plan, an Integrated Science Assessment, and, if warranted, a Risk/Exposure Assessment, and also a Policy Assessment by the EPA, with opportunities for review by the EPA's Clean Air Scientific Advisory Committee and the public. These documents will inform the Administrator's decision as to whether to retain or revise the current standards. The proposed decision was published in the Federal Register with opportunity for public comment. The Administrator's final decisions will take into consideration these documents, CASAC advice, and public comment on the proposed decision.

]]> Other Significant Previously Published in The Unified Agenda Final Rule Stage Yes No Other 40 CFR 50 40 CFR 58 42 U.S.C. 7401 et seq. Judicial Final 04/06/2018 signature by 4/6/18 Judicial NPRM 07/14/2017 signed by 7/14/17 No NPRM 07/26/2017 82 FR 34792 Final Rule 05/00/2018 No No None No No No No Breanna Alman 2060 Office of Air and Radiation OAR 919 541-2351 alman.breanna@epa.gov 109 T.W. Alexander Drive, Mail Code C539-02, Research Triangle Park NC 27709 Karen Wesson 2060 Office of Air and Radiation OAR 919 541-3515 wesson.karen@epa.gov 109 T.W. Alexander Drive, Mail Code C504-06, Research Triangle Park NC 27711