WTP Flocculation 4/5 Gallery Improvements

The City of Ann Arbor, Michigan is seeking construction services through a Request for Proposal (RFP) numbered 25-48 for improvements to the Water Treatment Plant's Flocculation Basins 4 and 5 Gallery. The project involves comprehensive demolition and replacement of drain piping, minor painting of exposed pipes and appurtenances, and specific technical modifications including replacing drive components such as sprockets, chains, bearings, and shafts. The RFP requires bidders to submit detailed documentation covering company qualifications, safety programs, workforce development information, and compliance with local ordinances. Proposals are due on November 6th, 2025 at 11:00 a.m. local time, with a mandatory pre-proposal conference scheduled for October 15th, 2025 at 10:00 a.m. at the Water Treatment Plant. Evaluation criteria will include qualifications, workplace safety, workforce development, social equity, sustainability, and pricing, with bidders required to provide a 5% bid security. The contract period is anticipated to span December 2025 to January 2026, with an expected Notice to Proceed in December 2025.

While no specific set-aside designations for disadvantaged enterprises are explicitly mentioned, the RFP emphasizes social equity as an evaluation criterion. The project includes a total cash allowance of $50,000, with $25,000 allocated for mechanical scope changes and $25,000 for concrete repairs. The City reserves the right to accept or reject any bid and award the contract in a manner it deems most beneficial. The technical specifications indicate the work will be performed at the existing Ann Arbor Water Treatment Plant, with detailed plans prepared by Fishbeck, an engineering consulting firm from Grand Rapids, Michigan. Bidders must demonstrate compliance with prevailing wage and living wage requirements, and the project involves precise technical work including blasting and recoating cast iron grates, removing corrosion from embedded materials, and installing new pipe supports with specific attachment methods. The comprehensive nature of the project suggests potential for local contractors with extensive municipal infrastructure experience and specialized water treatment plant renovation capabilities.