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<br />City of Redwood City 1017 Middlefield Road, Redwood City, CA. 94063 Tel: 650-780-7000 www.redwoodcity.org
<br />construction needs and include contingencies for soft costs such as design, permitting,
<br />easements, and other associated project expenses. The estimated cost is $10,000–$20,000.
<br />Public outreach: Public meetings should be held to inform the community on the anticipated
<br />projects, schedule, benefits, and cost estimates. The estimated cost is $30,000-$50,000.
<br />Funding feasibility study: To support ongoing stormwater funding, the City should conduct a
<br />funding feasibility study evaluating a special tax versus a property-related fee. The study would
<br />include preliminary rate calculations, assess impacts on stakeholders, and evaluate public opinion
<br />research to identify the most viable funding strategy. The estimated cost is $50,000–$100,000.
<br />Operations and Maintenance assessment: An Operations and Maintenance (O&M) assessment
<br />is recommended to evaluate the effectiveness, efficiency, and completeness of the City’s current
<br />stormwater practices. The assessment would review existing maintenance procedures,
<br />responsibilities, and equipment; develop standardized operating procedures for inspections and
<br />maintenance across all asset types; evaluate asset management systems for consistency and
<br />accuracy; and assess organizational structure and staffing to identify opportunities for improved
<br />efficiency and risk reduction. The estimated cost is $40,000–$60,000.
<br />Developing the Master Plan: The Stormwater Master Plan should document the existing system,
<br />current performance, and areas subject to flooding; prioritize improvement projects with
<br />associated cost estimates; summarize technical methodologies and modeling results; and include
<br />an operations and maintenance plan and financial analysis. The estimated cost is $40,000–
<br />$50,000.
<br />Conceptual designs: The highest-priority stormwater projects should be identified and conceptual
<br />designs developed. These planning-level designs will demonstrate project viability, support
<br />detailed planning, and enhance competitiveness for funding through grants and other sources.
<br />The estimated cost is $50,000–$100,000.
<br />While individual components of the stormwater master plan can be completed separately if funding
<br />is limited, staff recommends that the plan be developed sequentially as a single, comprehensive
<br />analysis. This approach is typical for master planning and helps reduce total cost, time, and the risk of
<br />duplication.
<br />Table 1: Stormwater Master Plan Cost Estimate
<br />Stormwater Master Plan Elements Cost Estimate Range
<br />Data Gaps Analysis $10,000 to $20,000
<br />Topographic Surface Information Collection $300,000 to $600,000
<br />Infrastructure Data Collection and Condition
<br />Assessment
<br /> Pipes $200,000 to $400,000
<br /> Concrete and Natural Channels $150,000 to $300,000
<br /> Culverts and Bridges $40,000 to $60,000
<br /> Basins and Lagoons $60,000 to $90,000
<br /> Pump Stations $60,000 to $80,000
<br /> Green Infrastructure $30,000 to $50,000
<br />Hydrologic and Hydraulic Modeling $200,000 to $400,000
<br />Climate Change Projections $40,000 to $60,000
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