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This was the first time the EPA reviewed the environmental impacts separate from the health impacts for this group of criteria air pollutants. [18] Also, in 2010, the EPA decided to ensure compliance by strengthening monitoring requirements, calling for increased numbers of monitoring systems near large urban areas and major roadways.
The National Emission Standards for Hazardous Air Pollutants (NESHAP) are air pollution standards issued by the United States Environmental Protection Agency (EPA). The standards, authorized by the Clean Air Act, are for pollutants not covered by the National Ambient Air Quality Standards (NAAQS) that may cause an increase in fatalities or in serious, irreversible, or incapacitating illness.
The amendments moved considerably beyond the original criteria pollutants, expanding the NESHAP program with a list of 189 hazardous air pollutants to be controlled within hundreds of source categories, according to a specific schedule. [1]: 16 The NAAQS program was also expanded. Other new provisions covered stratospheric ozone protection ...
Clean Air Act standards. Under the Clean Air Act, the National Ambient Air Quality Standards (NAAQS) are developed by the Environmental Protection Agency (EPA) for six common air pollutants, also called "criteria pollutants": particulates; smog and ground-level ozone; carbon monoxide; sulfur oxides; nitrogen oxides; and lead. [8]
For example, the United States Clean Air Act identifies ozone, particulate matter, carbon monoxide, nitrogen oxides (NO x), sulfur dioxide (SO 2), and lead (Pb) as "criteria" pollutants requiring nationwide regulation. [1] EPA has also identified over 180 compounds it has classified as "hazardous" pollutants requiring strict control. [2]
EPA that GHGs are air pollutants covered by the Clean Air Act. The EPA may regulate GHGs if they are determined to be a danger to human health. Supreme Court Case: May 2007 President George W. Bush orders EPA to use its authority under the Clean Air Act to regulate GHGs from mobile sources, working in coordination with several other federal ...
Indoor air pollution can pose a significant health risk. According to EPA reports, the concentrations of many air pollutants can be two to five times higher in indoor air than in outdoor air. Indoor air pollutants can be up to 100 times higher in some cases than they are inside. [114]
Unlike the criteria air pollutants, mercury is classified under the Act as a hazardous air pollutant and is thus subject to control under the National Emissions Standards for Hazardous Air Pollutants (NESHAP's) rather than the National Ambient Air Quality Standards (NAAQS).