Shimmick constructed a new pumping plant on the Delta Mendota Canal (DMC) to connect it to the California Aqueduct, thereby allowing flexibility in the state’s water conveyance system. The project included four major segments: The DMC pump station, a 69-kV electrical switchyard, yard piping, and the aquaduct turnout structure.
The DMC pump station consisted of a 3,000-cubic-yard, cast-in-place concrete structure with six intakes and two outlets for reverse flow operations and a pre-engineered metal building to contain the four 112.5 cfs, 1,000 hp pumps, electrical switchgear, HVAC, and control systems.
The 69-kV switchyard takes the incoming power feed from the Tracy substation and converts it to 5 kV for the pumps. For the yard piping, Shimmick installed two parallel 108-inch RCP lines crossing underneath a 500-kV overhead line. Shimmick self-performed the electrical scope of work on this project.