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Redwood City Sanitary Sewer Master Plan Executive Summary FINAL August 2008 1 Executive Summary This report summarizes the results and recommendations of the Sanitary Sewer Master Plan for the City of Redwood City (City). The Master Plan was prepared by RMC Water and Environment (RMC) in close coordination with City staff. The Master Plan will be used to guide improvements to the City’s sanitary sewer system to accommodate current and future development and to ensure that the City continues to provide a high level of service to its customers. Background and Purpose of Capacity Assessment The City is located in San Mateo County and is bounded by the San Francisco Bay on the east, the Cities of Foster City, Belmont, and San Carlos on the north and west, and the City of Menlo Park and Towns of Woodside and Atherton on the south. The City has a population of about 77,000 and is served by a wastewater collection system consisting of approximately 190 miles of sewer pipelines. Additionally, the City owns and operates 31 sewer pump stations in the Redwood Shores and Seaport/Pacific Shores areas. The City is a member agency of the South Bayside System Authority (SBSA). The City’s collection system conveys flow to the Maple Street Pump Station, where it is pumped (by SBSA) to the SBSA Wastewater Treatment Plant in Redwood Shores. In the Redwood Shores area of the City, the City’s collection system conveys flow directly to the SBSA treatment plant. The City also conveys wastewater from several San Mateo County Sewer Maintenance Districts that discharge flow to the City’s system. The City’s sewer system and service area are shown in Figure ES-1. This evaluation provides an up-to-date assessment of the capacity of the sanitary sewer system to handle both existing and future wastewater flows. The City’s previous Sewer Master Plan was completed in 1986, and the City has experienced significant redevelopment in its downtown area since then. Additional growth is projected in the future, which would further increase wastewater flows. This Master Plan will also help the City meet the requirements to complete a capacity evaluation and capacity assurance plan as part of preparing its Sewer System Management Plan (SSMP). The SSMP addresses the overall management, operation, and maintenance of the sewer system and is required for all sewer system agencies by the Regional Water Quality Control Board, as well as under the Statewide General Waste Discharge Requirements adopted in 2006 by the State Water Resources Control Board. The overall objectives of this Master Plan were to develop wastewater flow projections for the City’s collection area using current population, water use, and land use information; develop a hydraulic model of the trunk sewer system; use the model to identify existing capacity deficiencies and future capacity requirements; identify areas that may be a priority for rehabilitation efforts to reduce I/I; and develop a Capital Improvement Program (CIP), including budget estimates, for implementing the needed capacity improvements to the sanitary sewer system. This Executive Summary is presented in two parts: How the Master Plan was Prepared describes the scope and methodologies of the planning effort, including key planning and technical assumptions incorporated into the sewer system capacity analysis. Recommended Capacity Improvement Program presents the recommended Capital Improvement Program (CIP), including capacity improvement projects, priorities, and estimated costs. In addition, recommendations are presented for implementing the proposed capacity improvement program. 6.2.A. - Page 217