One of the key regulatory programs for air quality are the:

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The National Ambient Air Quality Standards (NAAQS) regulate the concentration of six common pollutants in outdoor air: ozone, particulate matter, carbon monoxide, sulfur dioxide, nitrogen oxides, and lead. These standards are set by the Environmental Protection Agency (EPA) under the Clean Air Act and are intended to protect public health and welfare by establishing maximum allowable levels of these pollutants in the air. Compliance with the NAAQS is mandatory for all states and are reviewed and revised every five years.

One of the Key Regulatory Programs for Air Quality Are