control of air pollution.
"(y) Federal Implementation Plan.-The term `Federal
implementation plan' means a plan (or portion thereof) promulgated by
the Administrator to fill all or a portion of a gap or otherwise
correct all or a portion of an inadequacy in a State implementation
plan, and which includes enforceable emission limitations or other
control measures, means or techniques (including economic incentives,
such as marketable permits or auctions of emissions allowances), and
provides for attainment of the relevant national ambient air quality
(2) Section 302(g) of the Clean Air Act (42 U.S.C. 7602(g)) is
amended by adding the following at the end: "Such term includes any
precursors to the formation of any air pollutant, to the extent
the Administrator has identified such precursor or precursors for the
particular purpose for which the term `air pollutant' is used.".
(k) Pollution Prevention.-Section 101 of the Clean Air Act (42
U.S.C. 7401) is amended as follows:
(1) Amend subsection (a)(3) to read as follows:
"(3) that air pollution prevention (that is, the reduction or
elimination, through any measures, of the amount of pollutants
produced or created at the source) and air pollution control at
its source is the primary responsibility of States and local
(2) Amend subsection (b)(4) by inserting "prevention and"
immediately after "pollution".
(3) Add a new subsection (c) to read as follows:
"(c) Pollution Prevention.-A primary goal of this Act is to
encourage or otherwise promote reasonable Federal, State, and local
governmental actions, consistent with the provisions of this Act, for
(l) Part D of title I of the Clean Air Act is amended by adding a
new subpart after subpart 5 as follows:
"Subpart 6-Savings Provisions
"Sec. 193. General savings clause.
"SEC. 193. GENERAL SAVINGS CLAUSE.
"Each regulation, standard, rule, notice, order and guidance
promulgated or issued by the Administrator under this Act, as in
effect before the date of the enactment of the Clean Air Act
Amendments of 1990 shall remain in effect according to its terms,
except to the extent otherwise provided under this Act, inconsistent
with any provision of this Act, or revised by the Administrator. No
control requirement in effect, or required to be adopted by an order,
settlement agreement, or plan in effect before the date of the
enactment of the Clean Air Act Amendments of 1990 in any area which is
a nonattainment area for any air pollutant may be modified after such
enactment in any manner unless the modification insures equivalent or
greater emission reductions of such air pollutant.".
(m) Boundary Changes.-Section 162(a) of the Clean Air Act (42
U.S.C. 7472(a)) is amended by adding at the end thereof the following:
"The extent of the areas designated as Class I under this section
shall conform to any changes in the boundaries of such areas which
have occurred subsequent to the date of the enactment of the Clean Air
Act Amendments of 1977, or which may occur subsequent to the date of
the enactment of the Clean Air Act Amendments of 1990.".