What is the Gravity Pipeline Project?
The Gravity Pipeline (GP) Project consists of the design, construction, permitting, start-up, commissioning, and closeout of approximately 17,600 feet of wastewater gravity FRP pipe inside a concrete-segment tunnel. The work includs three shafts and will interface directly with the Front of Plant (FoP) Project at the Receiving Lift Station (RLS). Work is being implemented under a Progressive Design-Build procurement process.
What's Happening
Gravity Pipeline Project
Last Updated January 2021
TBM Status Update – January 26, 2021
Along its current drive, Salus built 1,347 rings and tunneled about 6,765 feet.
BBJV continuously monitors tunneling progress and makes adjustments as needed to ensure safe and smooth tunneling operations. Since the tunneling has been ongoing since June 2020, BBJV is looking to plan a stoppage to inspect Salus’ cutter head for wear and tear. This will help determine its condition, and whether there is need to replace any of these tools.
The first phase of installation of Fiberglass Reinforced Plastic (FRP) carrier pipes is almost complete.
January 2021 Monthly Update
Latest Updates
Gravity Pipeline Project
Gravity Pipeline October 2020
Salus began continuous mining from the launch shaft towards the SVCW plant after a planned stoppage. During the final stop,
Tunnel Boring Machine Begins Second Drive
After a successful first tunnel drive, Salus, the Tunnel Boring Machine, is ready for her next journey – tackling twice
Gravity Pipeline July 2020
Salus, the Tunnel Boring Machine (TBM), safely began her second drive from the launch shaft to SVCW’s wastewater treatment facility
Gravity Pipeline May 2020
After Salus completed its first drive late-March, the Barnard-Bessac Joint Venture (BBJV) crew began disassembling the Tunnel Boring Machine (TBM)
Quick Links
Contact
If you have questions about the Gravity Pipeline project.
- gravitypipeline@svcw.org
- 650-670-8954
Related Pages
Planning Reports
- Gravity Pipeline Project Planning Reports (Coming Soon)