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.
Last Updated September 2020
TBM Status Update – September 21, 2020
Salus made great tunneling progress during its launch phase, having installed 218 rings and tunneling 1,090 feet from the launch shaft. Salus is currently on her final planned stoppage. Barnard-Bessac Joint Venture (BBJV) will now transition from launch phase to full production tunneling phase. The tunneling between Salus’ current location and SVCW Front of Plant will be complete during this phase.
This stoppage will take approximately three (3) weeks, and the TBM launch structure will be removed from the launch shaft. In addition, a California switch and a continuous conveyor belt will be installed to excavate materials, or muck, from the face of the TBM where mining takes place. The receiving muck pit is located on the surface in the contractor’s work area near the launch shaft.
A California switch includes installing two rail tracks within the tunnel to transport personnel and supplies between the launch shaft and Salus. The switch allows the tracks to be used at the same time, enabling efficient movement of staff and materials as mining proceeds.
September Monthly Update
Gravity Pipeline Project
Salus, the Tunnel Boring Machine (TBM), completed her first tunnel drive and broke through into the shaft at Inner Bair
SVCW $495M Infrastructure Project Milestone Celebrated with Firsthand Look at TBM Before It Begins Two Years of Work Underground
Thank you for all who participated in and attended the event, the name revealing was a success! The U.S. Environmental
If you have questions about the Gravity Pipeline project.