81 STAT.]
PUBLIC LAW 90-148-NOV. 21, 1967
491
enactment of the Air Quality Act of 1967 designate air quality control regions based on jurisdictional boundaries, urban-industrial concentrations, and other factors including atmospheric areas necessary to provide adequate implementation of air quality standards. The Secretary may from time to time thereafter, as he determines necessary to protect the public health and welfare and after consultation with appropriate State and local authorities, revise the designation of such regions and designate additional air quality control regions. The Secretary shall immediately notify the Governor or Governors of the affected State or States of such designation. ' ' (b)(1) The Secretary shall, after consultation with appropriate advisory committees and Federal departments and agencies, from time to time, but as soon as practicable, develop and issue to the States such criteria of air quality as in his judgment may be requisite for the protection of the public health and welfare: Provided. That any criteria issued prior to enactment of this section shall be reevaluated in accordance with the consultation procedure and other provisions of this section and, if necessary, modified and reissued. Such issuance pfH"^^ai"'Re°"s|"r shall be announced in the Federal Register and copies shall be made ^ "^'^ *^^^ ^ available to the general public. " (2) Such criteria shall accurately reflect the latest scientific knowledge useful in indicating the kind and extent of all indentifiable effects on health and welfare which may be expected from the presence of an air pollution agent, or combination of agents in the ambient air, in varying quantities. "(3) Such criteria shall include those variable factors which of themselves or in combination with other factors may alter the effects on public health and welfare of any subject agent or combination of agents, including, but not limited to, atmospheric conditions, and the types of air pollution agent or agents which, when present in the atmosphere, may interact with such subject agent or agents, to produce an adverse effect on public health and welfare. "(c) The Secretary shall, after consultation with appropriate advisory committees and Federal departments and agencies, issue to the States and appropriate air pollution control agencies information on those recommended pollution control techniques the application of which is necessary to achieve levels of air quality set forth in criteria issued pursuant to subsection (b), including those criteria subject to the proviso in subsection (b)(1), which information shall include technical data relating to the technology and costs of emission control. Such recommendations shall include such data as are available on the latest available technology and economic feasibility of alternative methods of prevention and control of air contamination including cost-effectiveness analyses. Such issuance shall be announced in the Frde'^i\'Re°"ster P^'ederal Register and copies shall be made available to the general public. " (d) The Secretary shall, from time to time, revise and reissue material issued pursuant to subsections (b) and (c) in accordance with procedures established in such subsections. "AIR QUALITY STANDARDS AND ABA'O:MENT or AIR POLIX'TION
"SEC. 108. (a) The pollution of the air in any State or States which endangers the health or welfare of any persons, shall be subject to abatement as provided in this section. " (b) Consistent with the policy declaration of this title, municipal, State, and interstate action to abate air pollution shall be encouraged and shall not be displaced by Federal enforcement action except as otherwise provided by or pursuant to a court order under subsection (c),(h),or(k).
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