40 CFR 501.1 : Protection Of Environment (§ 1.1 To Parts 1851-1899) — (§ 425.01 To Parts 611-699) — Environmental Protection Agency (Continued) (§ 425.01 To Parts 611-699) — Sewage Sludge (§ 501.1 To Appendix B To Part 503) — State Sludge Management Program Regulations (§ 501.1 To § 501.34) — Purpose, Scope And General Program Requirements (§ 501.1 To § 501.3) — Purpose and scope.