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Established by the United States Environmental Protection Agency (EPA) under authority of the Clean Air Act (42 U.S.C. 7401 et seq.), NAAQS is applied for outdoor air throughout the country. [2] The six criteria air pollutants (CAP), or criteria pollutants, for which limits are set in the NAAQS are ozone (O 3), atmospheric particulate matter ...
The National Ambient Air Quality Standards (NAAQS) govern how much ground-level ozone (O 3), carbon monoxide (CO), particulate matter (PM 10, PM 2.5), lead (Pb), sulfur dioxide (SO 2), and nitrogen dioxide (NO 2) are allowed in the outdoor air. [6] The NAAQS set the acceptable levels of certain air pollutants in the ambient air in the United ...
Which areas in Iowa are among the cleanest in America regarding air quality? The EPA’s Clean Air Act identifies six common air pollutants which includes ozone and particulate matter.
Air pollutants can also cause other types of cancer. Another study found that the hazardous air pollutant (HAP) can cause cervical cancer and the upper aero-digestive tract cancer. [49] The cancer caused by air pollution is not equally distributed in the United States. Cancer incidence and death rates are higher in African Americans than other ...
Levels of ground-level ozone, designated as one of six common air pollutants by the U.S. Environmental Protection Agency, can rise when compounded by heat and sunlight. Children, older adults and ...
Since the EPA first started regulating clean air in the 1970s, emissions of the most common air pollutants have dropped by almost 80%. But around Houston, there's still a long way to go. Each year ...
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]
The EPA has established National Ambient Air Quality Standards (NAAQS) for each of these pollutants in order to protect public health. An AQI value of 100 generally corresponds to the level of the NAAQS for the pollutant. [12] The Clean Air Act (USA) (1990) requires the EPA to review its National Ambient Air Quality Standards every five years ...