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
01/05/2026 Southern California
Gas Company		 L406 Dig 7 Anomaly Repair Project (NOI) WQC Made Active Under General Order
12/30/2025 Los Angeles Department of Water and Power Bouquet Canyon Creek Vegetation Maintenance Emergency Project (RGP 63) NOA Signed
12/30/2025 Los Angeles Department of Water and Power Terminal Hill Access Road Emergency Project (RGP 63) NOA Signed
12/30/2025 Los Angeles Department of Water and Power Quigley Sag Pipe Emergency Repair Project (RGP 63) NOA Signed
12/30/2025 City of Santa Clarita Soledad Canyon Road and AT&T Communication Line Emergency Protection (RGP 63) NOA Signed
12/30/2025 County of Ventura
Public Works		 Matilija Canyon Road Emergency Repairs (RGP 63) NOA Signed
12/29/2025 Los Angeles County Flood Control District Basin Maintenance Brasada Development (Amendment) Amendment Signed
12/29/2025 California Department of Transportation Caltrans VEN-150 Landslide and Drainage Near Santa Paula Project (RGP 63) NOA Signed
12/26/2025 City of Los Angeles Department of Water and Power Valley Plaza Park South Stormwater Capture Denial Signed
12/22/2025 Ventura County Transportation Commission VCTV Rail Bridge Repair (RGP 63) NOA Signed
12/19/2025 Southern California Edison D1821672 Madrona Marsh Pole Replacement Project WQC Made Active Under General Order
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
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: