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Project No. SF027 


Fair Oaks Sewer Maintenance District (Portions of Atherton, Menlo Park, Redwood City, Woodside, and unincorporated North Fair Oaks and Sequoia Tract Areas)

About the Project

The FOSMD sanitary sewer system serves approximately 7,200 customers in the unincorporated San Mateo County communities of North Fair Oaks and Sequoia Tract, and portions of the Cities of Redwood City and Menlo Park and the Towns of Atherton and Woodside. The collection system includes approximately 82 miles of sewer pipelines ranging in size from 4 to 33 inches. The system discharges to the City of Redwood City’s collection system at Veterans Boulevard, from where it is conveyed to the Silicon Valley Clean Water (SVCW) interceptor system and treatment plant.

In 2016, the County conducted inspections of approximately 30 percent of the system (primarily the 10-inch and large trunk sewers and the smaller diameter sewers in the Sequoia Tract area) as part of the initial phase of updating the Sewer Master Plan for the District. The current project will include inspection of the remaining pipes and manholes in the FOSMD system.

The sewer facilities to be inspected include approximately 1,336 sewer segments totaling approximately 292,000 feet of sewer pipes ranging from 4 to 24 inches in diameter and associated manholes and other structures. The sewer pipes will be cleaned and inspected using specialized inspection equipment, low pressure jetting, and operators experienced with this type of work. Some of the sewer lines and manholes are located in easements outside street rights-of-way and will require contractor coordination with adjacent homeowners when access is needed.

Public Works Contact

Alan Velasquez, P.E.
Senior Civil Engineer

  • National Plant Services, Inc.


Schedule subject to change based on weather and other unforeseen conditions. The schedule will be updated, as needed.

  • Mobilization Date – 10/11/2022

  • Completion Date – 10/30/2023 

  • District Property Owner Notification Letter