National Association of Clean Air Agencies
EPANonrulemakingEPA-HQ-ORD-2014-0859

Integrated Science Assessment (ISA) for Particulate Matter

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Last modified
Jan 19, 2023
Comment window
closed 1702d ago
National Association of Clean Air Agencies filings
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Activity

National Association of Clean Air Agencies filed 1 comment on this docket between Nov 30, 2021 and Nov 30, 2021. 17 other organizations filed here. The comment window closed 1702d ago.

What National Association of Clean Air Agencies filed (1)

Nov 30, 2021· Comment submitted by National Association of Clean Air Agencies (NACAA)· EPA-HQ-ORD-2014-0859-0082

Filed on regulations.gov — full text not in the inline record.

Abstract

Particulate matter is one of six principal criteria pollutants for which EPA has established National Ambient Air Quality Standards (NAAQS). Periodically, EPA reviews the scientific basis for these standards by preparing an Integrated Science Assessment (ISA). The ISA is the scientific foundation for the additional technical and policy assessments that form the basis for EPA decisions on the adequacy of a current NAAQS and the appropriateness of new or revised standards.

View on regulations.gov →