From 42 U.S.C. §7409 (Chapter 85, Subchapter I, Part A; CAA §109)
(b) Protection of public health and welfare
(1) National primary ambient air quality standards, prescribed under subsection (a) of this section shall be ambient air quality standards the attainment and maintenance of which in the judgment of the Administrator, based on such criteria and allowing an adequate margin of safety, are requisite to protect the public health. Such primary standards may be revised in the same manner as promulgated.
(2) Any national secondary ambient air 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 with the presence of such air pollutant in the ambient air. Such secondary standards may be revised in the same manner as promulgated.
40 CFR 50.2 says:
(b) National primary ambient air quality standards define levels of air quality which the Administrator judges are necessary, with an adequate margin of safety, to protect the public health. National secondary ambient air quality standards define levels of air quality which the Administrator judges necessary to protect the public welfare from any known or anticipated adverse effects of a pollutant. Such standards are subject to revision, and additional primary and secondary standards may be promulgated as the Administrator deems necessary to protect the public health and welfare.
I expected to see language about protecting sensitive populations but didn't. The only place that language is used (that I found during this quick investigation) is at 42 U.S.C. §7408(f)(1)(C) under the heading "Information regarding processes, procedures, and methods to reduce or control pollutants in transportation; reduction of mobile source related pollutants; reduction of impact on public health."It requires "information on other measures which may be employed to reduce the impact on public health or protect the health of sensitive or susceptible individuals or groups."
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40 CFR 50.2 says:
(b) National primary ambient air quality standards define levels of air quality which the Administrator judges are necessary, with an adequate margin of safety, to protect the public health. National secondary ambient air quality standards define levels of air quality which the Administrator judges necessary to protect the public welfare from any known or anticipated adverse effects of a pollutant. Such standards are subject to revision, and additional primary and secondary standards may be promulgated as the Administrator deems necessary to protect the public health and welfare.
I expected to see language about protecting sensitive populations but didn't. The only place that language is used (that I found during this quick investigation) is at 42 U.S.C. §7408(f)(1)(C) under the heading "Information regarding processes, procedures, and methods to reduce or control pollutants in transportation; reduction of mobile source related pollutants; reduction of impact on public health."It requires "information on other measures which may be employed to reduce the impact on public health or protect the health of sensitive or susceptible individuals or groups."
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