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Bookmark or Share- NAAQS Table | Criteria Air Pollutants - US EPAThe Clean Air Act, which was last amended in 1990, requires EPA to set National Ambient Air Quality Standards (40 CFR part 50) for pollutants considered harmful to public health and the environment. The Clean Air Act identifies two types of national ambient air quality standards.
- Reviewing National Ambient Air Quality Standards (NAAQS) | US EPAThe Clean Air Act requires EPA to set National Ambient Air Quality Standards (NAAQS) for pollutants that are common in outdoor air, considered harmful to public health and the environment, and that come from numerous and diverse sources.
- National Ambient Air Quality StandardsWhat is an ambient air quality standard? An air quality standard defines the maximum amount of a pollutant averaged over a specified period of time that can be present in outdoor air without harming public health, and thus, it defines clean air.
- NAAQS Table | US EPA - U.S. Environmental Protection AgencyThe Clean Air Act identifies two types of national ambient air quality standards. Primary standards provide public health protection, including protecting the health of "sensitive" populations such as asthmatics, children, and the elderly.
- eCFR :: 40 CFR Part 50 -- National Primary and Secondary Ambient Air ...Interpretation of the National Ambient Air Quality Standards for Particulate Matter Appendix L to Part 50 Reference Method for the Determination of Fine Particulate Matter as PM 2.5 in the Atmosphere
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