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U.S. Code of Federal Regulations
Regulations most recently checked for updates: May 14, 2025
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Title 40
Chapter I
Part 122 - PART 122—EPA ADMINISTERED PERMIT PROGRAMS: THE NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
Subpart A [§ 122.1 - § 122.7] - Subpart A—Definitions and General Program Requirements
Subpart B [§ 122.21 - § 122.38] - Subpart B—Permit Application and Special NPDES Program Requirements
Subpart C [§ 122.41 - § 122.50] - Subpart C—Permit Conditions
Subpart D [§ 122.61 - § 122.64] - Subpart D—Transfer, Modification, Revocation and Reissuance, and Termination of Permits
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