401 Water Quality Certification and Waste Discharge Requirements Program
Wetland and Riparian Area Protection
The Clean Water Act (CWA) Section 401 Certification and Waste Discharge Requirements Program for dredge and fill activities is an important tool for regulating hydrologic modification projects in addition to other projects which involve dredge and fill.
- Applications for Clean Water Act Section 401 Water Quality Certifications
- Public Notices
- Water Quality Certification Actions Recently Issued Updated: May 6, 2020
- Hydromodification and California Wetlands
Updated: October 25S, 2021
Decisions Pending:
- Tentative Amendment Waste Discharge Requirements for Port of Los Angeles Berths 238-239 Improvements Project
- Tentative Amendment Waste Discharge Requirements for Port of Long Beach Cruise Terminal
- Tentative Waste Discharge Requirements for M & A Gabaee, LLC for the Single Family Dwelling at 10550 Bellagio Road
- Notice of Public Hearing to Issue a Waste Discharge Requirements to RTG Investments, LLC for the Agua Dulce Residential Development Project
401 Certification Contacts:
- General email:
RB4-401Certification@waterboards.ca.gov - Céline Gallon (TMDLs & Standards - Supervisor):
Phone: (213) 576-6784
