Regulations last checked for updates: May 17, 2024

Title 40 - Protection of Environment last revised: May 15, 2024
All TitlesTitle 40Chapter IPart 57Subpart A - Subpart A—General
View all text of Subpart A [§ 57.101 - § 57.111]
§ 57.106 - Expiration date.

Each NSO shall state its expiration date. No NSO issued under this regulation shall expire later than January 1, 1988.

authority: Secs. 110, 114, 119, 301, Clean Air Act, as amended (42 U.S.C. 7410,7414,7419,and; sec. 406 of Pub. L. 95-95
source: 50 FR 6448, Feb. 15, 1985, unless otherwise noted.
cite as: 40 CFR 57.106
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