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Regulations last checked for updates: May 16, 2025
Title 40 - Protection of Environment last revised: Nov 16, 2025
All Titles
Title 40
Chapter I
Part 233 - PART 233—404 STATE PROGRAM REGULATIONS
Subpart A [§ 233.1 - § 233.4] - Subpart A—General
Subpart B [§ 233.10 - § 233.16] - Subpart B—Program Approval
Subpart C [§ 233.20 - § 233.24] - Subpart C—Permit Requirements
Subpart D [§ 233.30 - § 233.39] - Subpart D—Program Operation
Subpart E [§ 233.40 - § 233.41] - Subpart E—Compliance Evaluation and Enforcement
Subpart F [§ 233.50 - § 233.53] - Subpart F—Federal Oversight
Subpart G [§ 233.60 - § 233.62] - Subpart G—Eligible Indian Tribes
Subpart H [§ 233.70 - § 233.71] - Subpart H—Approved State Programs
authority:
33 U.S.C. 1251
source:
53 FR 20776, June 1, 1988, unless otherwise noted.
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