Code of Federal Regulations > Title 40 > Chapter I > Part 124 > Subpart D - Subpart D—Specific Procedures Applicable to NPDES Permits

U.S. Code of Federal Regulations

Regulations most recently checked for updates: Jan 21, 2026

§ 124.51 - Purpose and scope.

§ 124.52 - Permits required on a case-by-case basis.

§ 124.53 - State certification.

§ 124.54 - Special provisions for State certification and concurrence on applications for section 301(h) variances.

§ 124.55 - Effect of State certification.

§ 124.56 - Fact sheets.

§ 124.57 - Public notice.

§ 124.58 - [Reserved]

§ 124.59 - Conditions requested by the Corps of Engineers and other government agencies.

§ 124.60 - Issuance and effective date and stays of NPDES permits.

§ 124.61 - Final environmental impact statement.

§ 124.62 - Decision on variances.

§ 124.63 - Procedures for variances when EPA is the permitting authority.

§ 124.64 - Appeals of variances.

§ 124.65 - [Reserved]

§ 124.66 - Special procedures for decisions on thermal variances under section 316(a).