Construction work progresses at the Belmont Gravity Pipeline (BGP) along Shoreway Road in Belmont and San Carlos. SVCW’s contractor partner, Shea Parsons Joint Venture (SPJV), and SPJV’s subcontractor Power Engineering Construction (PEC), have completed restoration of Jacking Shaft 4 (JS-4), marking the conclusion of Phase 4 of BGP construction. Vadnais trenchless microtunnelling operation from JS-3 to RS-2 was interrupted. The MTBM is unable to move forward so the machine will be retrieved in the last 75 feet of pipeline will be installed via open trench, the reason for the stalled MTBM is currently under investigation. After the final open trench to RS2 is completed, Restoration of RS-2 will be completed later this month.. Simultaneously, Vadnais has also begun setting up the JS-3 shaft in preparation of Phase 6, which will involve microtunneling from JS-3 to RS-3. Throughout all microtunneling operations, SPJV, PEC and Vadnais continue to ensure consistent coordination with the SVCW public outreach team and neighboring businesses, to limit impacts due to traffic modifications and construction noise.
At the Redwood City Pump Station (RCPS), SPJV makes headway with structural and electrical work at the pump station wet well and screening structure. With the upper deck in place, SPJV is now in the process of backfilling the screening building and wet walls up to grade. This activity will be followed by building concrete formwork and rebar installation for the pump pads, which will be constructed to impart structural support to the new pumps. Additional work at the pump station includes installation of roof framing and slide gates at the screening channel, as well as miscellaneous activities in the electrical building.
Structural and electrical work proceeds at the Menlo Park Pump Station (MPPS). Following successful completion of functional testing and 30-day acceptance testing at the B-side wet well, SPJV has begun rehabilitation of the A-side wet well. SPJV has removed existing concrete flumes and installed reinforcement at the wet well channel, and is preparing to pour concrete and install concrete coating. Concurrently, efforts are ongoing at the pump room to remove existing pumps and install pads for the new pumps. Additional work includes installation of lighting, overhead conduits and other electrical equipment in the B-side wet well electrical room.