Environmental Perspectives
Environmental Science
JULY 30, 2018
For example, 2010 soil data are likely to still represent conditions whereas 2010 groundwater data may not. 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.
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