RFP - Drainage Study and Analysis for the El Dorado Drainage Improvement Project #36106004

The contract involves a collaborative effort between the County’s Department of Transportation and the El Dorado Water Agency to conduct a comprehensive drainage study and infrastructure assessment for the Slate Creek watershed and the town of El Dorado, with a particular focus on addressing historic flooding issues. The project is divided into two phases: the first encompassing the overall watershed analysis, and the second concentrating on specific drainage improvements along Pleasant Valley Road, which is approximately 800 linear feet in length. The primary goal is to evaluate existing drainage conditions, identify deficiencies, and develop a detailed design basis for necessary upgrades to restore and enhance the drainage system, especially where infrastructure has reached the end of its service life. The project aims to mitigate flooding impacts, improve infrastructure resilience, and ensure compliance with relevant environmental and regulatory standards. The solicitation, issued as RFP #2025-0171, seeks highly qualified firms with proven experience in drainage studies, environmental compliance (including CEQA and NEPA), and local government projects. The contract size is estimated between 500,000 and 1.5 million dollars, with a response deadline of November 21, 2025. The procurement process includes submission of detailed proposals, team qualifications, references, and cost estimates, supported by sample agreements and cost proposal templates. The selected firm will be responsible for delivering a detailed work plan, technical analysis, and design basis, with potential contract duration spanning up to three years. Emphasis is placed on firms’ familiarity with Caltrans procedures, environmental policies, and local conditions, ensuring the project’s technical and regulatory success.