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: April 29, 2022
Decisions Pending:
- Notice of Public Hearing to Issue a Waste Discharge Requirements to Sakioka Farms Rive Ave, TIC for the Sakioka Farms Business Park (File No. 21-018)
- Notice of Public Hearing to Issue a Waste Discharge Requirements to Spring Canyon Recovery Acquisition, LLC for the Spring Canyon VTTM 48086 Housing Development Project
401 Certification Contacts:
- General Email:
RB4-401Certification@waterboards.ca.gov - Céline Gallon
Chief, TMDLs & Standards Unit
Phone: (213) 576-6784