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Regulations last checked for updates: Dec 12, 2025
Title 40 - Protection of Environment last revised: Nov 12, 2028
All Titles
Title 40
Chapter IV
Part 1400
Subpart A - Subpart A—General
§ 1400.1 - Purpose.
§ 1400.2 - Definitions.
authority:
42 U.S.C. 7412
(r)(7)(H)(ii)
source:
65 FR 48131, Aug. 4, 2000, unless otherwise noted.
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