PUBLIC LAW 101-549—NOV. 15, 1990 104 STAT. 2539 "(i) In the case of hazardous air pollutants emitted by sources in the category that may result in cancer in humans, a determination that no source in the category (or group of sources in the case of area sources) emite such hazardous air pollutants in quantities which may cause a lifetime risk of cancer greater than one in one million to the individual in the population who is most exposed to emissions of such pollutants from the source (or group of sources in the case of area sources), "(ii) In the case of hazardous air pollutants that may result in adverse health effects in humans other than cancer or adverse environmental effects, a determination that emissions from no source in the category or subcategory concerned (or group of sources in the case of area sources) exceed a level which is adequate to protect public health with an ample margin of safety and no adverse environmental effect will result from emissions from any source (or from a group of sources in the case of area sources). The Administrator shall grant or deny a petition under this paragraph within 1 year after the petition is filed. '(d) EMISSION STANDARDS.— "(1) IN GENERAL.—The Administrator shall promulgate regu- Regulations, lations establishing emission standards for each category or subcategory of major sources and area sources of hazardous air pollutants listed for regulation pursuant to subsection (c) in accordance with the schedules provided in subsections (c) and (e). The Administrator may distinguish among classes, types, and sizes of sources within a category or subcategory in establishing such standards except that, there shall be no delay in the compliance date for any standard applicable to any source under subsection (i) as the result of the authority provided by this sentence. "(2) STANDARDS AND METHODS. — Emissions standards promulgated under this subsection and applicable to new or existing sources of hazardous air pollutants shall require the maximum degree of reduction in emissions of the hazardous air pollutants subject to this section (including a prohibition on such emissions, where achievable) that the Administrator, taking into consideration the cost of achieving such emission reduction, and any non-air quality health and environmental impacts and energy requirements, determines is achievable for new or existing sources in the category or subcategory to which such emission standard applies, through application of measures, processes, methods, systems or techniques including, but not limited to, measures which— "(A) reduce the volume of, or eliminate emissions of, such pollutants through process changes, substitution of materials or other modifications, "(B) enclose systems or processes to eliminate emissions, "(C) collect, capture or treat such pollutants when released from a process, stack, storage or fugitive emissions point, "(D) are design, equipment, work practice, or operational standards (including requirements for operator training or certification) as provided in subsection (h), or "(E) are a combination of the above.
�
