88 STAT. ]
PUBLIC LAW 93-319-JUNE 22, 1974
253
" (B) Whenever the Administrator prescribes a limitation, requirement, or measure under subparagraph (A) of this paragraph with respect to a source, he shall determine the earliest date on which such source will be able to comply with such limitation, requirement, or measure, and with any regional limitation applicable to such source. " (C) An air pollution control agency may petition the Administra- ti.fn'T'^^it'itii^for" tor (A) to modify any limitation, requirement, or other measure under modi/ication. this paragraph so as to assure compliance with the requirements of this paragraph, or (B) to issue to the Federal Energy Administration the certification described in paragraph (3)(B) on the grounds describ3d in clause (iii) thereof. The Administrator shall take the action requested in the petition, or deny the petition, within 90 days after the date of receipt of the petition. "(3)(A) If the Administrator determines that a source to which compliance. a suspension under subsection (b)(1)(A) (ii) or to which a compliance date extension under subsection (c)(1) applies is not in compliance with any primary standard condition, or that a source to which a compliance date extension applies is not in compliance with a regional limitation applicable to it, he shall (except as provided in subparagraph (B)) either— " (i) enforce compliance with such condition or limitation under section 113, or "(ii) (after notice to the public and affording an opportunity ^"t'li'^ notice. for interested persons to present data, views, and arguments, including oral presentations, to the extent practicable) revoke such suspension or compliance date extension. " (B) If the Administrator finds that for any period— " (i) a source, to which an order under section 2(a) of the Energy Supply and Environmental Coordination Act of 1974 applies, will be unable to comply with a primary standard condition or regional limitation, "(ii) such a source will not be in compliance with such a condition or limitation, but such condition or limitation cannot be enforced because of a court order restraining its enforcement, or "(iii) the burning of coal by such a source will result in an increase in emissions of any air pollutant for which national ambient air quality standards have not been promulgated (or an air pollutant which is transformed in the atmosphere into an air pollutant for which such a standard has not been promulgated), and that such increase may cause (or materially contribute to) a significant risk to public health, he shall notify the Federal Energy Administrator of his finding and certify the period for which such order under such section 2(a) shall not be in effect with respect to such source. Subject to the conditions of the preceding sentence, such certification may be modified from time to time. For purposes of this subsection, subsection (c), and section 2 (a) or (b) of the Energy Supply and Environmental Coordination Act of 1974, a source shall be considered unable to comply with an air pollution requirement (including a primary standard condition or regional limitation) only if necessary technology or other alternative methods of control are not available or have not been available for a sufficient period of time.
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