Balfour Beatty served as the general contractor responsible for the construction of a new raw water intake and pumping plant on the Sacramento River. The project included the demolition – including non-hazardous and hazardous material removal – of an existing wastewater treatment plant, and the construction of a sheet pile cofferdam with a 10-foot thick tremie seal slab. This made way for the construction of a new architecturally innovative pump building that sits atop a 20,000-CY structural concrete intake structure. The pump building and intake structure house eight 2,000 HP pumps and motors with variable frequency drives that deliver a combined maximum 185 MGD of raw water to both Sacramento County and East Bay Municipal Utility District (EBMUD) for treatment.
Other significant components of the project included a 60-foot deep, 600-foot long slurry cut off wall in the levee to meet current Army Corps of Engineers standards, a control building, valve and meter vaults, chemical facility, maintenance facility, five 130-LF of 36-inch to 84-inch diameter welded steel piping, two micro-tunneled Caltrans I-5 highway crossings, NOAA-compliant fish screens with travelling submerged screen cleaners, over 10,000-LF of process piping above ground, chain and flight sedimentation collection, compressed air surge control system with 14-foot diameter surge tanks, roller compacted concrete settling basins and extensive landscaping and architectural features.
The project specified a state-of-the-art electrical and instrumentation package that included a 69 KV substation, 5 KV switchgear, controls, instrumentation and SCADA systems that allow the entire facility to be operated remotely from a single laptop computer.
The plant owner is responsible for operation. The plant is unmanned and is fully automated to allow remote operation.