Section 401 Water Quality Certification - Final Letters

Section 401 WQC - Program

The following Section 401 Water Quality Certification (WQC) actions have been issued within the previous 60 days. *

DATE OF ISSUANCE
APPLICANT
PROJECT
ACTION
08/25/2025 California Department of Parks and Recreation Stokes Creek Culvert Removal &
New Bridge		 Signed WQC
08/13/2025 City of Carson Sepulveda Boulevard over
Dominguez Channel		 Signed WQC
07/23/2025 Los Angeles County
Public Works		 Bridge 868 Gorge Road over Las Flores Creek Debris Removal (RGP 63) Signed NOA
07/10/2025 Los Angeles County
Public Works		 The Old Road Bridge Over Castaic Creek WQC Signed
07/08/2025 Los Angeles Department of Water and Power Bouquet Reservoir Inlet-Outlet Pipeline West Portal Leak Investigation Seawall Repair WQC Made Active Under General Order
07/07/2025 Los Angeles County
Public Works		 The Old Bridge Over Castaic Creek WQC Signed
DATE OF ISSUANCE
APPLICANT
PROJECT
ACTION

Click here for past 401 Final Letters

Please contact Valerie Carrillo at (213) 576-6759. Any petitions for the appeal of a Section 401 WQC action must be filed within 30 days of the date of its issuance.

* This list will be updated as documents become available (approximately 3 days from date of issuance).

401 Certification Contacts: