See: clean air act at US Environmental Protection Agency
Law: US Code (Search for Title 42, Chapter 85: Air Pollution Prevention and Control)
Regulations: US Code of Federal Regulations (Search for Title 40, Chapter 1, Subchapter C, Part 61: Air Programs)
Summary: The Clean Air Act and its amendments define federal air pollution law. The law places limits on certain pollutants and emissions of these substances from various sources, including reducing outdoor, or ambient, concentrations of air pollutants that cause smog, haze, acid rain, and other problems; reducing emissions of toxic air pollutants that are known to, or are suspected of, causing cancer or other serious health effects; and phasing out production and use of chemicals that destroy stratospheric ozone.
The US Environmental Protection Agency has regulatory oversight and manages federal programs to implement the Clean Air Act including the National Emissions Standards for Hazardous Air Pollutants (NESHAP), which covers emissions from various chemicals, for example, asbestos-containing materials and perc chemicals in dry cleaning.
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