Watershed Studies - Nine Springs

The City of Madison, Wisconsin is seeking proposals for advanced watershed modeling and planning services for the Nine Springs Watershed, a 6,500-acre area with approximately 1,600 acres within the city limits. The Request for Proposals (RFP) calls for a consultant team to develop hydrologic and hydraulic models, conduct calibration analysis, evaluate flood mitigation alternatives, and prepare comprehensive watershed study reports. The project is structured in three phases: model development and existing conditions analysis, mitigation alternative evaluation, and final report preparation. Evaluation criteria include 25% for project understanding and approach, 20% for team composition and personnel, 20% for relevant project experience, 5% for local vendor preference, and 30% for cost submission. Proposals are due by April 15, 2024, at 4:00 PM CST, with consultant selection anticipated by May 15, 2024. The project is scheduled to start on July 1, 2024, and is expected to be completed by June 30, 2026, involving three public information meetings and up to fifteen focus group or stakeholder meetings.

The RFP does not explicitly mention specific set-aside designations for disadvantaged enterprises, though it does require compliance with the City's Affirmative Action Plan and nondiscrimination provisions. Consultants must use either Innovyze's XP-SWMM or Computational Hydraulics International's PCSWMM software for modeling, with ArcGIS for GIS work. The City will provide existing GIS data, monitoring data collected since Spring 2023, and comprehensive modeling guidance documentation. Professional liability insurance of $1,000,000 is required, to be maintained for six years after project completion. Consultants must also adhere to ban-the-box hiring practices and weapons prohibition requirements. The project budget is approximately $175,000, with consultants required to submit detailed cost proposals organized by main task, including unit costs for meetings and estimated hours by position title and billing rates. The project will involve modeling both within Madison city limits and in surrounding areas, with the City providing modeled flows from a previous Dunn's Marsh Watershed Study as input data.