Environmental Protection Agency
The Environmental Protection Agency (EPA) is announcing the availability of a final document titled, "Final Integrated Science Assessment for Oxides of Nitrogen, Oxides of Sulfur, and Particulate Matter--Ecological Criteria" (EPA/600/R-20/278). The document was prepared by the Center for Public Health and Environmental Assessment (CPHEA) within EPA's Office of Research and Development (ORD) as part of the review of the secondary (welfare-based) national ambient air quality standards (NAAQS) for oxides of nitrogen, oxides of sulfur, and particulate matter. This ISA represents an update of the 2008 Integrated Science Assessment for Oxides of Nitrogen and Sulfur-- Ecological Criteria (EPA/600/R-08/082F) and the 2009 Integrated Science Assessment for Particulate Matter (EPA/600/AR-08/139F). The ISA, in conjunction with additional technical and policy assessments, provides the basis for EPA's decisions on the adequacy of the current NAAQS and the appropriateness of possible alternative standards.
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-ORD-2013-0620 and EPA-HQ-OAR-2014-0128; FRL-10015-76-76-ORD] AGENCY: Environmental Protection Agency (EPA). ACTION: Notice of availability. SUMMARY: The Environmental Protection Agency (EPA) is announcing the availability of a final document titled, “Final Integrated Science Assessment for Oxides of Nitrogen, Oxides of Sulfur, and Particulate Matter—Ecological Criteria” (EPA/600/R-20/278). The document was prepared by the Center for Public Health and Environmental Assessment (CPHEA) within EPA's Office of Research and Development (ORD) as part of the review of the secondary (welfare-based) national ambient air quality standards (NAAQS) for oxides of nitrogen, oxides of sulfur, and particulate matter. This ISA represents an update of the 2008 Integrated Science Assessment for Oxides of Nitrogen and Sulfur—Ecological Criteria (EPA/600/R-08/082F) and the 2009 Integrated Science Assessment for Particulate Matter (EPA/600/AR-08/139F). The ISA, in conjunction with additional technical and policy assessments, provides the basis for EPA's decisions on the adequacy of the current NAAQS and the appropriateness of possible alternative standards. DATES: The document will be available on or about October 16, 2020. ADDRESSES: The “Final Integrated Science Assessment for Oxides of Nitrogen, Oxides of Sulfur, and Particulate Matter—Ecological Criteria” will be available primarily via the internet on EPA's Integ…
Citation: 85 FR 66327
