...standard for each air pollutant for which air quality criteria have been issued prior to such date ; and (B) after a reasonable time for interested persons...standards with such modifications as he deems appropriate. (2) With respect to any air pollutant for which air quality criteria are issued after December 31,...

...the general public. NATIONAL AMBIENT AIR QUALITY STANDARDS SEC. 109. (a) (1) The Administrator— (A) within 30 days after the date of enactment of the...standards with such modifications as he deems appropriate. (2) With respect to any air pollutant for which air quality criteria are issued after the date of enactment...

...general public. "NATIONAL AMBIENT AIB QUALITY STANDARDS "Sec. 109. (a) (1) The Administrator — "(A) within 30 days after the date of enactment of the...primary and secondary ambient air quality standards with sueb. modifications as he deems appropriate. "(2) With respect to any air pollutant for which air quality...

...the date of enactment of this Act and for contiguous areas affected by operations within such mines. (b) After a reasonable time for interested persons...submit written comments thereon (but no later than ninety days after the publication of such proposed regulations), the Administrator shall by regulation...

...of enactment of this Act and for contiguous areas affected by operations within such mines. oo '"" (b) After a reasonable time for interested persons...submit written comments thereon (but no later than ninety days after the publication of such proposed regulations) , the 1 Administrator shall by regulation...

...Part 36 of the Federal Aviation Regulations as in effect on the date of enactment of this subsection. "(B) after a reasonable time for interested persons to submit written comments thereon (but not later than 60 days after the initial publication of such proposed regulations), shall issue regulations...

...general public. NATIONAL AMBIENT AIR QUALITY STANDARDS SEC. 109. (a) (1) The Administrator — 4> VBO (A) within 30 days after the date of enactment of "««-•...proposed standards) shall by regulation promulgate sucn proposed national primary and secondary ambient air quality standards with such modifications...

...national primary ambient air quality standard and a national secondary ambient air quality stanard for each air pollutant for which air quality criteria...standards with such modifications as he deems appropriate. " (2) With respect to any air pollutant for which air quality criteria are issued after the date of...

...standard for each air pollutant for which air quality criteria have been issued prior to such date; and (B) after a reasonable time for interested persons...standards with such modifications as he deems appropriate. (2) With respect to any air pollutant for which air quality criteria are issued after December 31,...

...§l857c-4 [§109l "NATIONAL AMBIENT AIR QUALITY STANDARDS "SEC. 109. (a) (1) The Administrator— "(A) within 30 days after the date of enactment of the...standards with such modifications as he deems appropriate. "(2) With respect to any air pollutant for which air quality criteria are issued after the date of...