This is an Expression of Interest for fire hydrant replacement services at the Specific Manufacturing Capability (SMC) facility at the Idaho National Laboratory. The work involves removing old hydrants and installing new ones with associated piping, testing, and commissioning. The performance location is within the INL site boundary, where the Davis-Bacon Act and a Site Stabilization Agreement apply to construction work. The submission deadline for this initial interest phase is March 27, 2026. Selected vendors from this process may be invited to participate in a subsequent Request for Proposal.