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GOAL AND INTRODUCTION © 2025 Fischer Compliance, LLC. All rights reserved. Sewer System Management Plan licensed for Redwood City use only Page 8 of 59 There are approximately 18,452 active service locations connected to the City’s sewer system. The property owner is responsible for installation, maintenance and repair of the upper private sewer lateral(s). The City is responsible for the lower lateral, the portion of a building sewer located in the public right-of-way which extends from the City main to the property line or limit of public right-of-way or easement, estimated at approximately 109 miles. The City estimates that approximately 6.9% of the system is in easements and backyards totaling 12.5 miles of the total sewer system. The City experiences some challenges in accessing laterals within the easements and backyards, such as when private property owners build structures or improvements over easements. When such instances are found, the City works with the property owner to correct and restore access to the system. The City is a member of the regional wastewater agency, Silicon Valley Clean Water (SVCW), which provides conveyance and treatment of flows from its member agencies. The main portion of the City’s collection system conveys flow to SVCW’s Maple Street Pump Station, where it is pumped to the SVCW Wastewater Treatment Plant (WWTP) in Redwood Shores. Flows from the Seaport/Pacific Shores area can be discharged to the Maple Street Pump Station or directly to SVCW’s conveyance system, or partly to both locations, depending on valve settings with the system. In the Redwood Shores area, however, the City’s collection system conveys flow directly to the SVCW WWTP. Figure 3 contains a map of the City’s sanitary sewer system service area along with areas satellite to the City system. The City has entered into agreements with six satellite agencies that allow wastewater from those agencies to flow through the Redwood City collection system to the SVCW treatment facilities. These agencies are Edgewood Sewer Maintenance District, Emerald Lake Heights Sewer Maintenance District, Fair Oaks Sewer Maintenance District, Kensington Square Sewer Maintenance District, Oak Knoll Sewer Maintenance District, and Woodside Town Center Sewer Assessment District. The City maintains up-to-date system maps. See Element 4.1 - Updated Map of Sanitary Sewer System for more detail. Figure 3 - City Vicinity Map and Service Area ATTY/RESO.0077/CC RESO SEWER SYSTEM MANAGEMENT PLAN - EXHIBIT A REV: 07-14-25 LF Page 15 of 317