...108 (a)). The Act further states that national primary ambient air quality standards are regulations which "in the judgment of the Administrator, based on such criteria and allowing for an adequate margin of safety, are requisite to protect the public health" (Section 109 (b)). Air...

...108 (a)). The Act further states that national primary ambient air quality standards are regulations which "in the judgment of the Administrator, based on such criteria and allowing for an adequate margin of safety, are requisite to protect the public health" (Section 109 (b)). Air...

...in fact, achievable and that their attainment Is practicable. II. The Margin of Safety: In the Act, National Primary Ambient Air Quality Standards "shall...which in the judgment of the Administrator, based on (air quality) criteria and allowing an adequate margin of safety, are requisite to protect the public...

...air quality standards, prescribed under subsection (a) after the date of enactment of this provision shall be ambient air quality standards the attainment...of the Administrator, based on such criteria, and adequately considering the environmental, economic, energy and social benefits and costs (including...

...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...

...adverse effects on human health. In the language of the Clean Air Act, as amended, national primary air quality standards "shall be ambient air quality...standards the attainment and maintenance of which . . . are requisite to protect the public health. "^ The first necessary step to be taken by those...

...adverse effects on human health. In the language of the Clean Air Act, as amended, national primary air quality standards "shall be ambient air quality...standards the attainment and maintenance of which * are requisite to protect the public health." (1) The first necessary step to be taken by those charged...

...secondary ambient air quality standard shall specify, for the pollutant involved, a level of air quality "the attainment and maintenance of which, in the judgment of the Administrator, based on air quality criteria issued under section 108 is requisite to protect the public welfare from any known...

...quality standard prescribed 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...