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40 CFR §63.11144

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
  1. (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).
  2. (b)After April 17, 2012, terms used in this subpart are defined in the Clean Air Act; § 63.2; and § 63.12005.