...SOURCE: Office of Technology Assessment, 1987. ards for "hazardous" air pollutants, which include any air pollutant ... to which no ambient air quality...applicable and which in the judgment of the Administrator causes or contributes to, air pollution which may reasonably be anticipated to result in an increase...

...periodic table and exist in the free state normally as diatomic molecules. Hazardous Air Pollutant—An air pollutant to which no ambient air quality standard is applicable and which in the judgment of the EPA Administrator may cause, or contribute to, an increase in mortality or an increase in serious irreversible,...

...often is not as comprehensive as Federal 42 USC 1857 (1970). An air pollutant is defined to be "anaii pollutant to which no ambient air quality standard...applicable and which in the judgment of the Administrator (of EPA) may cause, or contribute to, an increase in mortality or an increase in serious irreversible,...