...Criteria Air Pollutants The Clean Air Act requires that the primary standards for the criteria pollutants "shall be ambient air quality standards the attainment...criteria and allowing an adequate margin of safety, are required to protect the public health" (Section 109[b]l, Clean Air Act Amendments of 1970). The intent...

...primary standard setting process in this testimony. The primary standard is defined in the Act as one "the attainment and maintenance of which, in the judgment of the Administrator, based on the criteria and allowing an adequate margin of safety, [is] requisite to protect the public health."...

...identified under Section 108. Section 109(b)(l) defines a primary standard as a level of air quality, the attainment and maintenance of which in the judgment of the Administrator, based on the criteria and allowing for an adequate margin of safety, is requisite to protect the public health....

...health. The secondary standard, as defined in Section 109(b)(2), must specify a level of air quality the attainment and maintenance of which, in the judgment of the Administrator and based on the criteria, are requisite to protect the public welfare from any known or anticipated...

...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...

...protected. Id. A secondary standard, as defined in section 109(b)(2), must "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...

...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...

...protected. Id. A secondary standard, as defined in section 109(b)(2), must "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...

...the public health."' The Act states that a secondary standard must "specify a level of air quality the attainment and maintenance of which, in the judgment of the Administrator, based on [the] criteria, [are] requisite to protect the public welfare from any known or anticipated adverse...

...l988; Padgett and Richmond. l983) and is covered briefly here. For criteria pollutants the primary standards "shall be ambient air quality standards...criteria and allowing an adequate margin of safety, are required to protect the public health" (CAA, 1970, section l09[b]l). The intent is to have NAAQSs that...