40 CFR 123.2 : Protection Of Environment (§ 1.1 To Parts 1851-1899) — (Parts 100-103 To § 135.13) — Environmental Protection Agency (Continued) (Parts 100-103 To § 135.13) — Water Programs (Parts 100-103 To § 135.13) — State Program Requirements (§ 123.1 To § 123.64) — General (§ 123.1 To § 123.3) — Definitions.