Pump Stations Improvements October 2022

Construction work makes headway 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), is in the process of backfilling and restoring Jacking Shaft 4 (JS-4) this month, which marks the completion of Phase 4 of the construction work. With the mobilization to JS-3, Vadnais trenchless has begun microtunneling from JS-3 to RS-2, which is expected to run through later this month. Throughout all of the microtunneling operations, SPJV and PEC 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 is continuing with structural and electrical work at the pump station wet well and screening structure. With the construction of the second lift walls at the pump station complete, SPJV is now working on building the upper deck for the wet well screening structure. This month, SPJV finished installing shoring for forms and rebar for the upcoming upper deck concrete pour. Shoring is the process by which props or structures are used as temporary support for another primary structure, during construction. Currently SPJV is working on pouring concrete for the deck, which will be allowed to cure for 5 days. Installation of overhead conduits and wires continues to take place within the electrical building.

Structural and electrical work proceeds at the Menlo Park Pump Station (MPPS). Following the installation of all equipment in the B-side wet well, SPJV conducted functional testing of the equipment as part of B-side startup activities, which was followed by initiation of the 30-day acceptance testing. Acceptance testing began last month and is anticipated to complete this month. Additional work at the B-side wet well includes installation of overhead conduits, as well as other instrumentation in the electrical room.

JS-3 to RS-2 microtunneling
JS-4 shaft backfill and compaction
RCPS screening structure upper deck
MPPS electrical work
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