1990—Par. (1). Pub. L. 101–549, § 305(b), struck out “two hundred and” after “municipal incinerators capable of charging more than”.

Par. (3). Pub. L. 101–549, § 403(d), directed the insertion of “, clean fuels,” after “including fuel cleaning,”, which was executed by making the insertion after “including fuel cleaning” to reflect the probable intent of Congress, and inserted at end “Emissions from any source utilizing clean fuels, or any other means, to comply with this paragraph shall not be allowed to increase above levels that would have been required under this paragraph as it existed prior to November 15, 1990.”

1977—Par. (2)(C). Pub. L. 95–190 added subpar. (C).

Pub. L. 95–95, title I, § 127(b), Aug. 7, 1977, 91 Stat. 741, directed Administrator, within 1 year after Aug. 7, 1977, to report to Congress on consequences of that portion of definition of “major emitting facility” under this subpart which applies to facilities with potential to emit 250 tons per year or more.