Citation:

U.S. EPA. Integrated Science Assessment (ISA) for Sulfur Oxides – Health Criteria (Final Report, Dec 2017). U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-17/451, 2017.

Impact/Purpose:

The Clean Air Act mandates that EPA periodically review the national ambient air quality standards (NAAQS) for SO_x, as measured by SO₂. The purpose of this ISA is to provide a comprehensive review, synthesis, and evaluation of the most policy-relevant science to serve as the scientific foundation for the current primary (health-based) NAAQS for sulfur oxides.

Description:

The Integrated Science Assessment for Sulfur Oxides – Health Criteria is a concise synthesis and evaluation of the most policy-relevant science, and has been prepared as part of the review of the primary (health-based) National Ambient Air Quality Standards (NAAQS) for Sulfur Oxides (SO_x)under the Clean Air Act. The SO_x ISA, in conjunction with additional technical and policy assessments, provides the policy relevant scientific information necessary to conduct a review of the current primary and secondary air quality standards for Ozone sufficiently protects public health. The SO_x ISA reviews information on atmospheric science, exposure, dosimetry, mode of action, and health effects related to sulfur oxides and sulfur dioxide (SO₂), including evidence from controlled human exposure, epidemiologic, and toxicological studies.

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