One of a group of air pollutants regulated by EPA on the basis of criteria (information on health and/or environmental effects of pollution). Criteria air pollutants are widely distributed all over the country.
The Clean Air Act requires US Environmental Protection Agency (EPA) to establish “national ambient air quality standardsâ€â€™ or NAAQS (expressed as concentration in air) for all “criteria pollutants.†Criteria pollutants are those pollutants that US Environmental Protection Agency (EPA) has determined (1) “cause or contribute to air pollution which may reasonably be anticipated to endanger public health or welfare,†and (2) exist in ambient air as a result of “numerous or diverse mobile or stationary sources.†EPA has identified the following as criteria pollutants: ozone, nitrogen oxides (NOx), sulfur dioxide (SO2), particulate matter (PM), fine particulate matter (PM 2.5), carbon monoxide (CO), and lead.
One of the six pollutants for which EPA is required to set National Ambient Air Quality Standards to protect human health and welfare. Criteria pollutants include ozone (ground-level), carbon monoxide, particulate matter, sulfur dioxide, lead, and nitrogen oxides. They are called "criteria" pollutants because the Clean Air Act required EPA to describe the criteria for setting or revising standards.
Any air pollutant determined to be hazardous to human health and regulated under the Clean Air Act through national ambient air quality standards (carbon monoxide, nitrogen oxides, and non-methane volatile organic compounds).
An air pollutant for which a national ambient air quality standard has been promulgated
Any air pollutant for which EPA has established a National Ambient Ait Quality Standard: carbon monoxide, lead, nitrogen oxides, ozone, particulates and sulfur oxides. Criteria pollutants are measured in air quality control regions to determine whether the area meets or does not meet the federal air quality standard.
Any pollutant for which EPA has established a National Ambient Air Quality Standard (NAAQS), specifically carbon monoxide, lead, nitrogen oxides, ozone, particulate matter, and sulfur oxides.
CAA § 108(2) Pollutants for which National Ambient Air Quality Standards (NAAQS) have been set by the EPA: 1.) Carbon monoxide (CO) 2.) Nitrogen oxides (NO) 3.) Sulfur dioxide (SO2) 4.) Particulate matter (with an aerodynamic diameter less than 10 microns) (PM-10) 5.) Ozone (and its precursors) 6.) Lead
A pollutant determined to be hazardous to human health and regulated under EPA's National Ambient Air Quality Standards. The 1970 amendments to the Clean Air Act require EPA to describe the health and welfare impacts of a pollutant as the "criteria" for inclusion in the regulatory regime.