further progress' means such annual incremental reductions in
emissions of the relevant air pollutant as are required by this
part or may reasonably be required by the Administrator for the
purpose of ensuring attainment of the applicable national
ambient air quality standard by the applicable date.".
(C) Amend paragraph (2) to read as follows:
"(2) Nonattainment area.-The term `nonattainment area'
means, for any air pollutant, an area which is designated
`nonattainment' with respect to that pollutant within the
meaning of section 107(d).".
(b) Nonattainment Plan Provisions in General.-Section 172 (42
U.S.C. 7502) of the Clean Air Act is amended to read as follows:
"SEC. 172. NONATTAINMENT PLAN PROVISIONS IN GENERAL.
"(a) Classifications and Attainment Dates.-
"(1) Classifications.-(A) On or after the date the
Administrator promulgates the designation of an area as a
nonattainment area pursuant to section 107(d) with respect to
al ambient air quality standard (or any revised standard,
including a revision of any standard in effect on the date of
the enactment of the Clean Air Act Amendments of 1990), the
Administrator may classify the area for the purpose of applying
an attainment date pursuant to paragraph (2), and for other
purposes. In determining the appropriate classification, if
any, for a nonattainment area, the Administrator may consider
such factors as the severity of nonattainment in such area and
the availability and feasibility of the pollution control
measures that the Administrator believes may be necessary to
provide for attainment of such standard in such area.
"(B) The Administrator shall publish a notice in the Federal
Register announcing each classification under subparagraph (A),
except the Administrator shall provide an opportunity for at
least 30 days for written comment. Such classification shall
not be subject to the provisions of sections 553 through 557 of
title 5 of the United States Code (concerning notice and
comment) and shall not be subject to judicial review until the
Administrator takes final action under subsection (k) or (l) of
section 110 (concerning action on plan submissions) or section
179 (concerning sanctions) with respect to any plan submissions
required by virtue of such classification.
"(C) This paragraph shall not apply with respect to
nonattainment areas for which classifications are specifically
provided under other provisions of this part.
"(2) Attainment dates for nonattainment areas.-(A) The
attainment date for an area designated nonattainment with
respect to a national primary ambient air quality standard
shall be the date by which attainment can be achieved as
expeditiously as practicable, but no later than 5 years from
the date such area was designated nonattainment under section
107(d), except that the Administrator may extend the attainment
date to the extent the Administrator determines appropriate,
for a period no greater than 10 years from the date of
designation as nonattainment, considering the severity of
nonattainment and the availability and feasibility of pollution
"(B) The attainment date for an area designated