National Ambient Air Quality Standards (NAAQS)

National Ambient Air Quality Standards (NAAQS)

Definition

Created by the Environmental Protection Agency pursuant to the Clean Air Act, NAAQS set primary and secondary standards governing allowable concentration levels of certain airborne pollutants that can exist without endangering human health and welfare. The six currently identified, referred to as criteria pollutants, are carbon monoxide, lead, nitrogen dioxide, ozone, particle pollution, and sulfur dioxide.

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