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Noncriteria air pollutants are synonymous with hazardous air pollutants (HAPs), air toxics or toxic air pollutants (TAPs). The term noncriteria pollutants refers to all air pollutants except for the criteria pollutants (SOx, PM, NOx, CO, O3, and Pb).

To protect public health and welfare nationwide, the CAA requires EPA to establish National Ambient Air Quality Standards (NAAQS) for six common air pollutants also known as ?criteria? air pollutants. The pollutants are particulate matter, ozone, carbon monoxide, sulfur dioxide, nitrogen dioxide and lead.

EPA calculates an AQI value each day in each county for five major air pollutants regulated by the Clean Air Act: ozone, particulate matter, carbon monoxide, sulfur dioxide, and nitrogen dioxide.

Regulated NSR pollutant, for purposes of this Ruling, means the following: (i) Nitrogen oxides or any volatile organic compounds; (ii) Any pollutant for which a national ambient air quality standard has been promulgated.

The pollutants are particulate matter, ozone, carbon monoxide, sulfur dioxide, nitrogen dioxide and lead.

Six Criteria Air Pollutants: Carbon Monoxide, Ground-level Ozone, Lead, Nitrogen Oxides, Particulate Matter, and Sulfur Dioxide. The Clean Air Act (CAA) requires EPA to set National Ambient Air Quality Standards (NAAQS) for six common air pollutants.

To protect public health and welfare nationwide, the CAA requires EPA to establish National Ambient Air Quality Standards (NAAQS) for six common air pollutants also known as ?criteria? air pollutants. The pollutants are particulate matter, ozone, carbon monoxide, sulfur dioxide, nitrogen dioxide and lead.

Six Criteria Air Pollutants: Carbon Monoxide, Ground-level Ozone, Lead, Nitrogen Oxides, Particulate Matter, and Sulfur Dioxide. The Clean Air Act (CAA) requires EPA to set National Ambient Air Quality Standards (NAAQS) for six common air pollutants.

Under the Clean Air Act, EPA is required to regulate emissions of hazardous air pollutants. This original list included 189 pollutants....Initial List of Hazardous Air Pollutants with Modifications. CAS NumberChemical Name67561Methanol72435Methoxychlor74839Methyl bromide (Bromomethane)74873Methyl chloride (Chloromethane)187 more rows

Air Pollutants Carbon Monoxide. Lead. Nitrogen Oxides. Ozone. Particulate Matter. Sulfur Dioxide. Other Air Pollutants.