2019 US Code
Title 42 - The Public Health and Welfare
Chapter 85 - Air Pollution Prevention and Control
Subchapter I - Programs and Activities
Part C - Prevention of Significant Deterioration of Air Quality
Subpart i - Clean Air
Sec. 7472 - Initial classifications

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Citation 42 U.S.C. § 7472 (2019)
Section Name §7472. Initial classifications
Section Text (a) Areas designated as class I

Upon the enactment of this part, all—

(1) international parks,

(2) national wilderness areas which exceed 5,000 acres in size,

(3) national memorial parks which exceed 5,000 acres in size, and

(4) national parks which exceed six thousand acres in size,


and which are in existence on August 7, 1977, shall be class I areas and may not be redesignated. All areas which were redesignated as class I under regulations promulgated before August 7, 1977, shall be class I areas which may be redesignated as provided in this part. 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 August 7, 1977, or which may occur subsequent to November 15, 1990.

(b) Areas designated as class II

All areas in such State designated pursuant to section 7407(d) of this title as attainment or unclassifiable which are not established as class I under subsection (a) shall be class II areas unless redesignated under section 7474 of this title.

Source Credit

(July 14, 1955, ch. 360, title I, §162, as added Pub. L. 95–95, title I, §127(a), Aug. 7, 1977, 91 Stat. 731; amended Pub. L. 95–190, §14(a)(40), Nov. 16, 1977, 91 Stat. 1401; Pub. L. 101–549, title I, §§108(m), 110(2), Nov. 15, 1990, 104 Stat. 2469, 2470.)

Editorial Notes AMENDMENTS

1990—Subsec. (a). Pub. L. 101–549, §108(m), inserted at end "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 August 7, 1977, or which may occur subsequent to November 15, 1990."

Subsec. (b). Pub. L. 101–549, §110(2), substituted "designated pursuant to section 7407(d) of this title as attainment or unclassifiable" for "identified pursuant to section 7407(d)(1)(D) or (E) of this title".

1977—Subsec. (a)(4). Pub. L. 95–190 inserted a comma after "size".

Publication Title United States Code, 2018 Edition, Supplement 1, Title 42 - THE PUBLIC HEALTH AND WELFARE
Category Bills and Statutes
Collection United States Code
SuDoc Class Number Y 1.2/5:
Contained Within Title 42 - THE PUBLIC HEALTH AND WELFARE
CHAPTER 85 - AIR POLLUTION PREVENTION AND CONTROL
SUBCHAPTER I - PROGRAMS AND ACTIVITIES
Part C - Prevention of Significant Deterioration of Air Quality
subpart i - clean air
Sec. 7472 - Initial classifications
Contains section 7472
Date 2019
Laws In Effect As Of Date January 24, 2020
Positive Law No
Disposition standard
Statutes at Large References 91 Stat. 731, 1401
104 Stat. 2469
Public Law References Public Law 95-95, Public Law 95-190, Public Law 101-549
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