CITY COUNCIL MEETING AGENDA PACKET

Page 1 of 4 Item #11 CITY COUNCIL AGENDA REPORT November 4, 2025 Public Works - Utilities Division TITLE: CONTINUED FROM OCTOBER 21, 2025 - APPROVE THE LONG-TERM SEWER CAPITAL IMPROVEMENT PLAN SUMMARY On June 17, 2025, the City Council adopted a Resolution approving the City’s 2025 Sewer System Management Plan (SSMP). At that time, the SSMP City Council Agenda Report identified under Next Steps that a long-term Sewer Capital Improvement Plan (Sewer CIP) would be prepared and presented to the City Council at a later date. This report presents that long-term sewer CIP, which includes prioritized projects over a 20-year span, under three distinct implementation scenarios. A detailed resource review and Operation and Maintenance (O&M) requirements to properly implement the SSMP, which was also identified as a next step in the SSMP Staff Report of June 17, 2025, is currently under development and will be presented at a future City Council meeting. The City will also be conducting a sewer rate study and sewer connection fee study that will utilize the results of the SSMP, including this CIP, to calculate and recommend increases to user rates and connection fees for City Council consideration in 2026. RECOMMENDATION Continued from October 21, 2025 - Approve the Long-Term Sewer Capital Improvement Plan. BACKGROUND The City owns and operates a sewer collection system that consists of approximately 253 miles of gravity sewers, approximately 4.9 miles of force mains, 8 siphons, 11 active pump stations, and approximately 21,000 service connections. The average dry weather flow is approximately 6 million gallons per day (MGD). The City has agreements with Dublin San Ramon Services District (DSRSD) and City of Livermore (for Ruby Hill service area) for wastewater treatment and is a member of Livermore-Amador Valley Water Management Agency (LAVWMA) for treated wastewater disposal. The City also has agreements with Alameda County that allow sewage flows from the Castlewood Service Area to be transported through the City’s collection system for treatment at DSRSD. The City has developed a Sewer System Management Plan (SSMP) that is a living document to guide management of its sewer collection system. As a regulatory-mandated document, the SSMP covers nearly all management aspects, including Element 8, System Evaluation, Capacity Assurance, and Capital Improvements. The City hired a consultant, Woodard & Curran, to prepare this long-term Sewer CIP (Attachment 1) as well as two key studies that informed the development of the Sewer CIP: the sewer system capacity evaluation and the facility condition assessments. Page 204 of 323