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Newsletter – April 2020

What’s Going on in Your Neighborhood?

We have recently updated our website to include an interactive map, showing all Clean Water Program work throughout San Mateo.

Visit the home page to check out the map. You can enter your address to see work planned for or happening in your area.

Map of traffic detour at Fashion Island Blvd and Norfolk St.Temporary Traffic Detour at S. Norfolk St. and Fashion Island Blvd.

From April 27 to April 30, traffic detours will be in place at the intersection of S. Norfolk St. and Fashion Island Blvd. Work will be conducted between 8 AM and 5 PM.

The City’s contractor, C2R Engineering, will be rehabilitating the sewer system in this area as part of the CWP. For immediate project concerns, please contact Trevor Connolly of C2R Engineering at (415) 559-2841.

For more information about this project, please visit the Basin C Project page.

Thank you for your patience and cooperation as we complete this work.

Wastewater Treatment Plant Project Update

The wastewater treatment plant upgrade and expansion project is the largest component of the Clean Water Program. Once upgraded, the plant will discharge high-quality treated water that meets state and federal water quality regulations. This project will be done in three phases over five years. Phase 1 began in 2019, and Phase 2 is anticipated to start this summer.

Phase 1 Progress

Phase 1 construction is on schedule to be completed by October 2020. Several outdated facilities have been demolished and removed, and shoring around the construction site is complete. Excavation for the foundation is in progress.

You can watch the construction via live camera feeds on the WWTP page.

Phase 2 – Foundation Construction Begins this Summer

The wastewater treatment plant foundation requires a significant number of piles to support the structure, create stability during seismic events, and prevent uplift (floating) from groundwater fluctuations in the bay mud. Installation of foundation piles is expected to start this summer. Pile driving will take place over a period of 8.5 months in two stages, with the first phase lasting 6 months and the second 2.5 months. The CWP will be providing regular updates and information via this newsletter, mailings to the WWTP neighbors, and on our website. Please stay tuned!

Rendering of new Waste Water Treatment Facility

Map of Laurie Meadows project area.Progress on Laurie Meadows and Woodbridge Pump Stations

Upgrade and rehabilitation of the Woodbridge pump station in Laurie Meadows Park will increase its capacity and reduce potential sewer overflows during storms. Work along Laurie Meadows Drive from 300 feet west of Suzie Street through about 100 feet north on Woodbridge Circle (see map) began in October 2019 and is expected to be completed by early fall 2020.

Work is nearly complete on the trenching and installation of the force main and gravity sewer main. Expansion work on the Woodbridge pump station and abandonment of the existing Laurie Meadows pump station began this month and will last approximately three months.

For more information, please contact project manager Laura Webb, 650.522.7322 or


Basin 1b Pipe Capacity Improvements Completed Ahead of Schedule

Basin 1b collection capacity improvements started in May 2019 and were completed in February – three months ahead of schedule! The work occurred in the central portion of San Mateo, in two areas, mostly from Edinburgh Street to 16th Avenue. More than 2,935 feet of existing sewer lines were replaced and upsized., and 3,260 feet of new relief sewer lines were installed. A 10-foot span of new pipe under Barneson Avenue was also installed. The rest of the project included rehabilitation and replacement work in downtown San Mateo on San Mateo Avenue, the alley between East 4th and East 5th Avenues (between San Mateo Drive and El Camino Real), and 9th Avenue between El Camino Real and Palm Avenue. The total length of repaired, rehabilitated, and upsized pipe is 9,340 feet.

The overall purpose of the Basin 1b project was to increase the integrity of the sewer system, reduce sewer overflows during heavy rains, and help the City meet regulatory requirements. The installation areas were selected using hydraulic modeling to determine the most efficient, cost-effective solutions.