...standards which are defined as follows:26 1. "National primary ambient air quality standards. .. .shall be ambient air quality standards the attainment and...safety, are requisite to protect the public health. 2. National secondary ambient air quality standards. .. .shall specify a level of air quality the attainment...

...quality standard prescribe under subsection (a) of this section shall specify a level of air quality the attainment and maintenance of which in the judgment of the Administrator, based on such criteria, is requisite to protect the public welfare from any known or anticipated adverse effects associated...

...ambient air quality standard prescribed, under subsection (a) shall specify a level of air quality the attainment and maintenance of which in the judgment of the Administrator, based on such criteria, is requisite to protect the public welfare from any known or anticipated adverse effects associated...

...air quality rtandards are those which, in the Judgment of the Administrator, based on the air quality criteria and allowing an adequate margin of safety, are requisite to protect the public health. National secondary ambient air quality standards are tho*e which. In the Judgment of the Administrator,...

...adequate margin of safety, are requisite to protect the public health. Section 109(b) (2) provides that: maintenance of which in the judgment of the Administrator, based on such criteria, is requisite to protect the public welfare from any known or anticipated adverse effects associated...

...(1970), requires that the Administrator of EPA set national "primary" ambient air standards which, "allowing an adequate margin of safety, are requisite to protect the public health ;" and that "secondary" standards be promulgated sufficient to "protect the public welfare from any...

...(1970), requires that the Administrator of EPA set national "primary" ambient air standards which, "allowing an adequate margin of safety, are requisite to protect the public health ;" and that "secondary" standards be promulgated sufficient to "protect the public welfare from any...

...standards. (b)'(l) National primary ambient air quality standards, prescribed under subsection (a) shall be ambient air quality standards the attainment and maintenance of which in the judgement of the Administrator, based on such criteria and allowing an adequate margin of safety, are...

...national primary standards were denned as, "ambient air quality standards the attainment and maintennee of which in the judgment of the Administrator, based...safety, are requisite to protect the public health." National secondary ambient air quality standards were to be set to protect the public welfare. Under...

...national primary and national secondary air quality standards. National primary air quality standards are "ambient air quality standards the attainment and...maintenance of which in the judgment of the Administrator * * * are requisite to protect the public health." Section 109(b)(l). A national secondary ambient...