Reso25 16341 - Laserfiche WebLink

Browse Search

Executive Summary City of Redwood City (0011239.02)15 Woodard & Curran, Inc. Sanitary Sewer Capacity Master Plan November 2023 Project Implementation Recommendations The City should begin implementation of the capacity improvements recommended in this Master Plan, starting with the highest ranked projects (Priority Group A). This plan does not specify an implementation schedule, as the City will need to balance the timing of priority sewer improvements with the need for other capital projects, such as sewer rehabilitation and pump station upgrades. The following items should be considered in project scheduling and design, and in future updates of the Master Plan. ▪The alignments and sizes of all recommended projects should be verified with detailed predesign analyses, including topographic surveys, geotechnical investigations, utility research, and constructability reviews. ▪Most projects detailed in this report are based on pipe replacement. The decision to parallel or replace existing sewers should consider the physical condition and remaining useful life of the existing pipelines; the availability of pipeline corridors for new sewer construction; and operation and maintenance concerns. ▪The hydraulic model has been developed to assist the City in performing capacity analyses and updating the Master Plan in the future. The model should be kept up-to-date with any changes to existing sewer connections, development plans, and sewer system facilities. ▪The City should continue with its sewer inspection and condition assessment program, identifying sewers that should be replaced due to poor condition. To the extent possible, these improvements should be coordinated with the recommended capacity-related improvements. ▪In addition to the project implementation recommendations listed above, the City should continue to address I/I through continued CCTV inspection and rehabilitation of sewer mains and lower laterals. Additional flow monitoring and field investigations should be conducted in high I/I areas to identify possible opportunities for I/I reduction, and the resulting elimination or downsizing of some of the capacity improvement projects presented herein. ▪The City should assess its sewer rates and connection fees and evaluate financial alternatives to fund the recommended capacity improvement program, including methods for allocating costs to future development. ▪The City should continue to incorporate diversity, equity, and inclusion (DEI) considerations in its sewer improvement programs. This includes working to minimize adverse impacts of construction on affected neighborhoods and communicating the benefits of these projects to City residents and businesses. Refer to Appendix E for a copy of the DEI analysis conducted for this Master Plan. This Master Plan is intended to be a working document to be refined and updated as additional data and new planning information becomes available. The Master Plan should be updated whenever there are major changes in planning assumptions or, at a minimum, every 5 to 10 years. Recommendations for Future Flow Monitoring The City historically has conducted flow monitoring annually in the Main City Area. Over the last 15 years, with the exception of the system-wide monitoring conducted for this Master Plan, these flow monitoring programs typically have consisted of approximately 8 to 15 flow meters in a given year, at various locations depending on the City’s needs. In planning for future flow monitoring, the City should consider the intended purpose(s) of the monitoring as well as past experience in terms of data the City has found useful. Going forward, with the exception of limited, targeted monitoring for a specific purpose, the City would likely derive more benefit from less frequent but more comprehensive flow monitoring programs. Goals of future flow monitoring may include: •Flow or project verification. As documented in Table ES-3, some of the capacity projects identified either had no flow meter specifically along the deficient reach to directly confirm the flow (confirmation level 3), or the ATTY/RESO.0077/CC RESO SEWER SYSTEM MANAGEMENT PLAN - EXHIBIT A REV: 07-14-25 LF Page 104 of 317