Environmental Perspectives
Environmental Science
JULY 30, 2018
There are only 6 NAAQS - ozone, carbon monoxide, particulates, lead, sulfur dioxides, and nitrogen dioxides - but they dominate most air quality concerns ranging from smog to health effects, such as from particulates and lead. There are 90 MCLs, including for specific chemicals, microbes, and properties such as radiation.
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