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Current as of January 02, 2025 | Updated by Findlaw Staff
(a) On and before April 17, 2012, the terms used in this subpart are defined in the Clean Air Act; §§ 61.02 and 61.61 of this chapter; and § 63.2 for terms used in the applicable provisions of subpart A of this part, as specified in § 63.11143(b).
(b) After April 17, 2012, terms used in this subpart are defined in the Clean Air Act; § 63.2; and § 63.12005.
Cite this article: FindLaw.com - Code of Federal Regulations Title 40. Protection of Environment § 40.63.11144 What definitions apply to this subpart? - last updated January 02, 2025 | https://codes.findlaw.com/cfr/title-40-protection-of-environment/cfr-sect-40-63-11144/
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