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RECORD NUMBER: 1746 OF 2474Main Title | Policy assessment for the review of the Secondary National Ambient Air Quality Standards for oxides of nitrogen and oxides of sulfur: January 14, 2011 version. | ||||||||||||||||||||||||||
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CORP Author | United States. Environmental Protection Agency. Office of Air Quality Planning and Standards. | ||||||||||||||||||||||||||
Publisher | U.S. Environmental Protection Agency, Office of Air Quality Planning and Standards, | ||||||||||||||||||||||||||
Year Published | 2011 | ||||||||||||||||||||||||||
Report Number | EPA/452/R-11/004B; EPA/452/R-11/004A; PB2011-104552 | ||||||||||||||||||||||||||
Stock Number | PB2011-104551 | ||||||||||||||||||||||||||
OCLC Number | 725878924 | ||||||||||||||||||||||||||
Subjects | Air quality--Law and legislation ; Nitrogen oxides--Law and legislation ; Sulfur oxides--Law and legislation ; Air--Pollution--Law and legislation | ||||||||||||||||||||||||||
Additional Subjects | National Ambient Air Quality Standards ; Nitrogen dioxide ; Sulfur dioxide ; Environmental exposure pathway ; Health risks ; Air pollution standards ; Public health ; Watersheds ; Acidification ; Air pollution effects(Human) ; Regulations | ||||||||||||||||||||||||||
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Collation | 1 v. (various pagings) : ill., maps, charts ; 28 cm. | ||||||||||||||||||||||||||
Abstract | This Policy Assessment has been prepared by staff in the Environmental Protection Agencys (EPA) Office of Air Quality Planning and Standards (OAQPS) in conjunction with the Agencys ongoing joint review of the secondary (welfare-based) national ambient air quality standards (NAAQS) for oxides of nitrogen and sulfur. This Policy Assessment evaluates the policy implications of the key scientific information contained in the Integrated Science Assessment (ISA) for Oxides of Nitrogen and Sulfur-Ecological Criteria, prepared by EPAs National Center for Environmental Assessment (NCEA), results from the analyses contained in the Risk and Exposure Assessment (REA) for Review of the Secondary National Ambient Air Quality Standards for Oxides of Nitrogen and Oxides of Sulfur, as well as additional staff analyses conducted for and presented in this document. It presents staff conclusions regarding the adequacy of the current NO2 and SO2 secondary standards as well as alternative standards for consideration in this review. This Policy Assessment is intended to help bridge the gap between the relevant scientific and technical information and the judgments required of the EPA Administrator in determining whether, and if so, how, it is appropriate to revise the secondary NAAQS for oxides of nitrogen and sulfur. This Policy Assessment considers the available scientific evidence and quantitative risk-based analyses, together with related limitations and uncertainties, and focuses on the basic elements of air quality standards: indicator, averaging time, form, and level. These elements, which serve to define each standard, must be considered collectively in evaluating the public welfare protection afforded by the standards. |
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Notes | Project officer: Randy Waite. Updating EPA-452/P-10-008, "Policy Assessment for the Review of the Secondary National Ambient Air Quality Standards for NOx and SOx Second External Review Draft." "January 2011." Final Report. "EPA-452/R-11-004a." "EPA-452/R-11-004b." "PB2011-104552." |
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Contents Notes | This Policy Assessment has been prepared by staff in the Environmental Protection Agency's (EPA) Office of Air Quality Planning and Standards (OAQPS) in conjunction with the Agency's ongoing joint review of the secondary (welfare-based) national ambient air quality standards (NAAQS) for oxides of nitrogen and sulfur. This Policy Assessment evaluates the policy implications of key scientific information contained in the Integrated Science Assessment (ISA) for Oxides of Nitrogen and Sulfur-Ecological Criteria, prepared by EPA's National Center for Environmental Assessment (NCEA), results from the analysis contained in the Risk and Exposure Assessment (REA) for Review of the Secondary National Ambient Air Quality Standards for Oxides of Nitrogen and Oxides of Sulfur, as well as additoinal staff analyses conducted for and presented in this document. It presents staff conlcusions regarding the adequacy of the current NO2 and SO2 secondary standards as well as alternative standards for consideration in this review. This Policy Assessment is intended to help "bridge the gap" between the relevent scientific and technical information and the judgements required of the EPA Administrator in determining whether, and if so, how, it is approprate to revise the secondary NAAQS for oxides of nitrogen and sulfur. This Policy Assessment considers the available scientifc evidence and quantitative risk-based analyses, together with related limitations and uncertainties, and focuses on the basic elements of air quality standards: indicator, averaging time, form, and level. These elements, which serve to define each standard, must be considered collectively in evaluating the public welfare protection afforded by the standards. 1. Introduction -- 2. Characterizing emissions, air quality, deposition and water quality -- 3. Known or anticipated ecological effects -- 4. Considerations of adversity to public welfare -- 5. Co-protection for other effects potentially afforded by an aquatic acidification standard -- 6. Addressing the adequacy of the current standards -- 7. Consideratoin of alternative standards for aquatic acidification -- Appendices. |