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Redwood City Stormwater Roadmap Next Steps September 2025 8-2 Schaaf & Wheeler The Stormwater Master Plan should serve as the backbone for stormwater infrastructure planning and guide the City toward a proactive, data-driven Stormwater Program. Initial, broad first steps for the City are as follows: 1. Fund the Stormwater Master Plan 2. Complete the Stormwater Master Plan 3. Determine the City’s long-term funding strategy 4. Determine high-priority, near-term projects 5. Design and construct high-priority, near-term projects The initial Stormwater Master Plan will likely need to be funded by the City using general funds, which is typical for jurisdictions without an existing Stormwater Program. A Stormwater Program refers to the combination of a comprehensive Master Plan that inventories existing infrastructure and identifies future capital needs that has an establishes a long-term funding strategy to fund the implementation of capital needs. Establishing a formal Stormwater Program will help the City better organize and manage its stormwater infrastructure needs. Additional discussion on implementing an ongoing Stormwater Program is provided in the Ongoing Steps section. 8.2 Ongoing Steps Following completion of the initial Stormwater Master Plan and project implementation, the City should adopt a recurring cycle to maintain system performance and resilience as a part of the Stormwater Program. This ongoing process ensures that infrastructure is regularly assessed, prioritized, and improved based on up-to-date data and evolving system demands. 1. Complete comprehensive Stormwater Master Plan– Complete every 20 years 2. Complete inspection of high and medium-risk infrastructure – Complete every 5 years 3. Complete inspection of low-risk infrastructure – Complete every 10 years 4. Determine critical infrastructure based on Stormwater Master Plan and inspection 5. Design critical projects 6. Construct critical projects Future capital improvement planning and operations costs are unknown and will be ultimately determined by future master planning efforts to assess then current conditions and model with then current standards and regulations. However, Mountain View with a similar population size and topographic setting estimated the high-priority capital improvements to cost $34,300,000 in 2019. Adjusting for inflation, Redwood City’s estimated CIP may cost between $40,000,000 and $50,000,000 in 2025. Inspection of high and medium-risk infrastructure is estimated to cost $100,000 to $150,000 in 2025. Inspection of low-risk infrastructure is estimated to cost $50,000 to $75,000 in 2025. Future estimates will need to be adjusted for projected inflation. Completing the Stormwater Master Plan will give the City a more accurate estimate of the City’s specific needs and total capital improvement estimates for future finance planning. Additionally, updating the Stormwater Master Plan every 20 years will allow the City to reassess its infrastructure against refined climate-change regulations and projections. The long-term funding source will aid the City in funding this ongoing effort of revaluation and implementation. Redwood City faces significant challenges and opportunities in managing its stormwater infrastructure amid aging assets, evolving regulatory requirements, and the increasing threats posed by climate change. While the City is already advancing critical projects, such as pump 11.A. - Page 38 of 53 469