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2026-07-06 10:51:44 -04:00

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LegalText 42 U.S.C. § 7472 Initial classifications us united_states_code code_section 42 THE PUBLIC HEALTH AND WELFARE 85 AIR POLLUTION PREVENTION AND CONTROL 7472 42 U.S.C. § 7472 current 119-100 2026-06-26 official https://uscode.house.gov/download/releasepoints/us/pl/119/100/xml_usc42@119-100.zip /us/usc/t42/s7472 data/legal/raw/us/code/title-42/usc42.xml 099a4b0d2a2d7d84d5b5fa9920fc1d2ad0ec439efb6a620b27957e88bd89ca2c 644321055a08eb1f260a6a3e31ac157fa024756abf612a9fd6857e7e400cf24e 1da409d5af72bee2b0d407734bb10e38f372caa7f9b6ef901ff82c341109df28 2026-07-04 official
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42 U.S.C. § 7472 - Initial classifications

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.

(July 14, 1955, ch. 360, title I, § 162, as added Pub. L. 9595, title I, § 127(a), Aug. 7, 1977, 91 Stat. 731; amended Pub. L. 95190, § 14(a)(40), Nov. 16, 1977, 91 Stat. 1401; Pub. L. 101549, title I, §§ 108(m), 110(2), Nov. 15, 1990, 104 Stat. 2469, 2470.)

Notes

Editorial Notes

Amendments1990—Subsec. (a). Pub. L. 101549, § 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. 101549, § 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. 95190 inserted a comma after “size”.