section 107 (designating carbon monoxide nonattainment areas), the
Administrator shall publish a notice announcing the classification of
each such carbon monoxide nonattainment area. The provisions of
section 172(a)(1)(B) (relating to lack of notice-and-comment and
judicial review) shall apply with respect to such classification.
"(3) If an area classified under paragraph (1), table 1, would
have been classified in another category if the design value in the
area were 5 percent greater or 5 percent less than the level on which
such classification was based, the Administrator may, in the
Administrator's discretion, within 90 days after the date of the
enactment of the Clean Air Act Amendments of 1990 by the procedure
required under paragraph (2), adjust the classification of the area.
In making such adjustment, the Administrator may consider the number
of exceedances of the national primary ambient air quality standard
for carbon monoxide in the area, the level of pollution
transport between the area and the other affected areas, and the mix
of sources and air pollutants in the area. The Administrator may make
the same adjustment for purposes of paragraphs (2), (3), (6), and (7)
of section 187(a).
"(4) Upon application by any State, the Administrator may extend
for 1 additional year (hereinafter in this subpart referred to as the
`Extension Year') the date specified in table 1 of subsection (a) if-
"(A) the State has complied with all requirements and
commitments pertaining to the area in the applicable
implementation plan, and
"(B) no more than one exceedance of the national ambient air
quality standard level for carbon monoxide has occurred in the
area in the year preceding the Extension Year.
No more than 2 one-year extensions may be issued under this paragraph
for a single nonattainment area.
"(b) New Designations and Reclassifications.-
"(1) New designations to nonattainment.-Any area that is
designated attainment or unclassifiable for carbon monoxide under
section 107(d)(4), and that is subsequently redesignated to
nonattainment for carbon monoxide under section 107(d)(3), shall,
at the time of the redesignation, be classified by operation of
law in accordance with table 1 under subsections (a)(1) and
(a)(4). Upon its classification, the area shall be subject to the
same requirements under section 110, subpart 1 of this part, and
this subpart that would have applied had the area been so
classified at the time of the notice under subsection (a)(2),
except that any absolute, fixed date applicable in connection
with any such requirement is extended by operation of law by a
period equal to the length of time between the date of the
enactment of the Clean Air Act Amendments of 1990 and the date
the area is classified.
"(2) Reclassification of moderate areas upon failure to attain.-
"(A) General rule.-Within 6 months following the applicable
attainment date for a carbon monoxide nonattainment area, the
Administrator shall determine, based on the area's design value
as of the attainment date, whether the area has attained the
standard by that date. Any Moderate Area that the Administrator
finds has not attained the standard by that date shall be
reclassified by operation of law in accordance with table 1 of
subsection (a)(1) as a Serious Area.
"(B) Publication of notice.-The Administrator shall publish a