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
12/02/2025 City of Long Beach Skylinks Regional Stormwater
Capture Project		 Denial Signed
12/01/2025 Water Conservation Authority Azusa River Wilderness Park Entry Improvements Project WQC Made Active Under General Order
11/26/2025 Southern California Edison TD1271718/TD922676 Saugus Deteriorated Pole Replacement Project Signed WQC
11/25/2025 Boeing Susana Field Laboratory Emergency Maintenance Project STL-IV and
STL-IV Road Culverts		 Signed NOA
11/25/2025 City of Camarillo Public Works Department Pleasant Valley Road Bike Lanes Project Signed WQC
11/21/2025 City of Long Beach
Marine Bureau		 Berths 1 and 2 Dock
Replacement Project		 WQC Made Active Under General Order
11/21/2025 City of Long Beach –
Public Works		 Naples Vista Del Golfo Tieback and
Cap Repair Project		 WQC Made Active Under General Order
11/06/2025 Los Angeles County Metropolitan Transportation Authority Doran Street and Broadway/Brazil Grade Separation Project Signed WQC
11/06/2025 California Department
of Transportation		 State Route 1 Culvert Retrofit/Bridge Replacement Project Amendment Signed
11/04/2025 California State Parks Century Dam Maintenance Repairse WQC Made Active Under General Order
11/03/2025 Los Angeles County
Public Works		 The Old Road Over Santa Clara River and Southern Pacific Transportation Company Bridge Signed WQC
10/20/2025 City of Buenaventura Foster Park Fish Passage Project – Phase 1 Notch Restoration Signed NOA
10/20/2025 City of Los Angeles
Bureau of Engineering		 Donald C. Tillman Water Reclamation Plant LA River Bull Creek Water Sampling Handrail Project Signed WQC
10/14/2025 Los Angeles Department of
Water and Power		 Main Street Facility Storm
Drain Cleanup		 Signed WQC
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: