NIST seeks a small business contractor to remove and replace two existing wooden staircases with new, field-fabricated galvanized steel stair assemblies in the lower-level mechanical room of Building 2 at its Boulder Campus. The work involves demolition, disposal, fabrication, on-site welding, and installation of code-compliant systems, requiring coordination with existing utilities and adherence to all safety regulations. A site visit is scheduled for Wednesday, April 29, 2026, and a list of individuals attending must be submitted by Monday, April 27, 2026. Questions from potential bidders are due by Friday, May 8, 2026. No budget or specific performance timeline beyond these dates is provided in the description.