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Basins 2 and 3 Collection System Improvements Project

Combatting a cease and desist order in San Mateo

  • $164M

    Project Cost

  • 900mm

    Diameter Pipelines

  • San Mateo, California

    San Mateo, California

Upgrading infrastructure and enhancing reliability

The City of San Mateo (City) is currently under a cease and desist order requiring improvements to its collection system that will eliminate sanitary sewer overflows and unauthorized discharge. The cease and desist order obligates the City of San Mateo, Town of Hillsborough, and the CSCSD to complete improvements necessary to eliminate conditions in its collection system that cause or contribute to sanitary sewer overflows (SSOs)—and by no later than December 31, 2018.

In response, the City and collaborating agencies created the Clean Water Program. When finished, it will provide a complete, system-wide elimination of overflows during the design-level storm events.

We will provide design services to upgrade aging infrastructure, enhance reliability, and provide capacity for wet weather flows in the collection system. There are three major components. First, a new 4.2 million-gallon in-system flow equalization storage facility will be installed. Next is upgrading and expanding three existing pump stations. The final component is installation of approximately six miles of new parallel and upsized gravity sewers and force mains, along with rehabilitation of existing infrastructure.

At a Glance




Meet Our Team

Steven Bedross, Senior Associate, Environmental Scientist

Strive to meet the needs of our clients without compromising the health of the natural and social environments on which we all depend.
Steven Bedross Senior Associate, Environmental Scientist Read More

Greg Raines, Vice President

It is our responsibility to society, as the engineers, to deliver water conveyance and power tunnels in a safe and reliable manner.

Craig Wilcox, Vice President, Director of Engineering Delivery

Our breadth and depth of internal technical resources aren’t only well known in the industry—we’re sought out to solve the most challenging problems.
Craig Wilcox Vice President, Director of Engineering Delivery Read More

Steven Bedross

Senior Associate, Environmental Scientist

Greg Raines

Vice President

Craig Wilcox

Vice President, Director of Engineering Delivery

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