Section 401 Water Quality Certification Public Notice
Turner Dam-San Antonio Reservoir Geotechnical Investigation
The San Francisco Regional Water Quality Control Board is currently reviewing an application for the following project for water quality certification under Section 401 of the Clean Water Act. We encourage public comments on the proposed work, which will be considered in the decision on certification. You may submit comments on this project to the staff member below.
| Project Name: |
Turner Dam-San Antonio Reservoir Geotechnical Investigation |
| City/County: |
Unincorporated, Alameda County |
| Comment Period: |
09/30/2026 - 10/20/2026 |
| Project Description: |
The San Francisco Public Utilities Commission (SFPUC) is in the process of developing the design for the Turner Dam/San Antonio Reservoir Improvements Project. The current project would inform the necessary design elements of the project with information gathered from geotechnical borings and other geological testing required by the California Division of Safety of Dams for seismic safety purposes. The proposed geotechnical investigation will facilitate investigating the substrata and collecting soil samples. The data collected will allow characterization of the embankment material and foundation materials under the embankment and at the other proposed locations. These will thereby inform potential remediation or upgrades that may be needed at the Turner Dam/San Antonio Reservoir embankment and appurtenant structures. |
| Project Files: |
Contact Staff for files |
| Staff Contact: |
Brian Wines (510) 622-5680 Water Quality Control Board 1515 Clay Street, Ste 1400 Oakland, CA 94612 |
