Site work for a water / sewer project in Foster City, California. Conceptual plans call for site work for a water / sewer project.

The project is a continuation of the District's on-going program to repair and replace elements of the sanitary sewer collection system to extend the useful life of the system. The project is comprised of replacing 16 manholes identified in the Wastewater Collection System Master Plan and by staff as a part of routine maintenance. Replacement of manholes is typically required due to: (1) the settlement of manholes which adversely affect the connecting pipes and sewage flows; (2) the deterioration of the manhole due to the corrosive gas produced by sewage; and/or (3) the scouring of receiving manholes at the end of a force main, due to the velocity of wastewater pumped from the lift station via the force main pipeline. These manholes operate as force main collectors, receiving wastewater flow from various lift stations and require replacement. During the condition assessment performed as part of the Wastewater Master Plan, Manholes 29-07, 18-01, 16-17, 14-02, 22-18, 22-19, 37-11, 29-31, 10-01, and 12-02 were witnessed to operate under turbulent conditions during force main discharge cycles. Additionally, staff has identified six (6) manholes located on trunk lines on East Hillsdale Boulevard, a major boulevard, and within busy intersections, adding complexity to their inspection and replacement: 29-08, 29-09, 29-10, 29-11, 29-12, and 29-13. Replacement of these manholes and the intercepting piping will enhance station reliability and public safety. The project is include in the city's 2023-2028 Capital Improvement Program (CIP) *Project information has been obtained through a public capital improvement plan (CIP). A CIP is a financial schedule for short- and long-range projects which is updated regularly. Information listed in the CIP often evolves based on funding availability and the project details, including timeline and value, are subject to change. The content management team will continue to pursue additional details as they become available.