14 Mile Slough New Pump Station

This was a new pump station for the City of Stockton that encompassed the construction of levees, the dismantling of an existing wastewater pump station, and the design and installation of sheet pile shoring. The core focus was the excavation and construction of a new cast-in-place concrete pump station boasting 22 million gallons per day (MGD) capacity. Integral to the undertaking was the installation of a range of components, spanning from new pumps and piping (ranging from 4 inches to 66 inches) to a state-of-the-art control building and a sophisticated control system complete with a standby generator.

Navigating the project's primary challenge, the team successfully executed the delicate task of dewatering the site in an environmentally sensitive area. This intricate process was coupled with shoring the adjacent levees while conducting excavations at a depth of 42 feet below grade. The magnitude of this endeavor is underscored by the fact that groundwater pumping persisted for a duration of nine months, reaching a peak of 1 MGD.

Notably, the project garnered acclaim, securing awards from both the American Public Works Association (APWA) and the American Society of Civil Engineers (ASCE). The recognition was a testament to the project's excellence in both design and construction, solidifying its status as a standout achievement in the field.