...are considered for those air pollutants that have an adverse effect on public health and welfare and the presence of which in the ambient air results from...numerous or diverse mobile or stationary sources. Author N74-28026 Environmental Protection Agency. Research Triangle Park. NC Development Engineering...

...each air pollutant— (A) which in his judgment has an adverse effect on public health or welfare; (B) the presence of which in the ambient air results...from numerous or diverse mobile or stationary sources ; and (C) for which air quality criteria had not been issued before December 31, 1970 but for which...

...each air pollutant — (A) which in his judgment has an adverse effect on public health and welfare ; (B) the presence of which in the ambient air results...numerous or diverse mobile or stationary sources; and (C) for which air quality criteria had not been issued before the date of enactment of the Clean...

...each air pollutant— "(A) which in his judgment has an adverse effect on public health or welfare ; "(B) the presence of which in the ambient air results...from numerous or diverse mobile or stationary sources ; and "(C) for which air quality criteria had not been issued before the date of enactment of the Clean...

...quality standards for each air pollutant which has an adverse effect on public health or welfare and the presence of which in the ambient air results from numerous or diverse mobile or stationery sources. Each of the States is required to adopt plans which implement these standards and...

...quality standards for each air pollutant which has an adverse effect on public health or welfare and the presence of which in the ambient air results from numerous or diverse mobile or stationery sources. Each of the States is required to adopt plans which implement these standards and...

...for each pollutant which has an adverse effect on the public health or welfare, and whose presence in the ambient air results from numerous or diverse mobile or stationary sources. The primary ambient air quality standards must be sufficient to allow an adequate margin of safety...

...for each pollutant which has an adverse effect on the public health or welfare, and whose presence in the ambient air results from numerous or diverse mobile or stationary sources. The primary ambient air quality standards must be sufficient to allow an adequate margin of safety...

...defined as those substances "halving] an adverse effect on public welfare" and whose "presence ... in the ambient air results from numerous or diverse mobile or stationary sources". Id. § 1857c-3(a)(l). At present, there are six categories of "criteria pollutants": sulfur oxides;...

...publish, and shall from time to time thereafter revise, a fist which includes each air pollutant— (B) the presence of which in the ambient air results...numerous or diverse mobile or stationary sources; and (A) which in his judgment has an adverse effect on public health and welfare; (2) The Administrator...