Environmental Protection Agency
On or about March 18, 2024, the Environmental Protection Agency (EPA) is making available to the public Volumes 1 and 2 of the Integrated Review Plan for the Primary National Ambient Air Quality Standards for Oxides of Nitrogen (IRP). The national ambient air quality standards (NAAQS) for oxides of nitrogen are set to protect public health from nitrogen dioxide (NO<INF>2</INF>) in ambient air. Volume 1 of the IRP contains contextual background material for the current review of the air quality criteria and the primary NAAQS for oxides of nitrogen. Volume 2 identifies policy-relevant issues in the review and describes key considerations in the EPA's development of the Integrated Science Assessment (ISA). The ISA provides the scientific basis for the EPA's decisions, in conjunction with additional technical and policy assessments, for the review of the NAAQS, as described in sections 108 and 109 of the Clean Air Act.
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 [EPA-HQ-OAR-2023-0317; FRL-11157-03-OAR] AGENCY: Environmental Protection Agency (EPA). ACTION: Notice of availability. SUMMARY: On or about March 18, 2024, the Environmental Protection Agency (EPA) is making available to the public Volumes 1 and 2 of the Integrated Review Plan for the Primary National Ambient Air Quality Standards for Oxides of Nitrogen (IRP). The national ambient air quality standards (NAAQS) for oxides of nitrogen are set to protect public health from nitrogen dioxide (NO 2 ) in ambient air. Volume 1 of the IRP contains contextual background material for the current review of the air quality criteria and the primary NAAQS for oxides of nitrogen. Volume 2 ( printed page 19309) identifies policy-relevant issues in the review and describes key considerations in the EPA's development of the Integrated Science Assessment (ISA). The ISA provides the scientific basis for the EPA's decisions, in conjunction with additional technical and policy assessments, for the review of the NAAQS, as described in sections 108 and 109 of the Clean Air Act. DATES: Comments must be received on or before April 17, 2024. ADDRESSES: You may send comments on Volume 2 of the IRP, identified by Docket ID No. EPA-HQ-OAR-2023-0317, by any of the following methods: Federal eRulemaking Portal: https://www.regulations.gov/​ (our preferred method). Follow the online instructions for submitting comments. Mail: U.S. Environmental Protection Agency, EPA Doc…
Other Federal Register documents from the same docket.
Citation: 89 FR 19308
