The Department of the Interior plans a small business set-aside construction solicitation to replace a 500-gallon diesel aboveground storage tank at the Stewart Lee Udall Building, 1849 C Street NW, Washington, DC 20240. The resulting contract will be firm-fixed-price, awarded using lowest price technically acceptable evaluation, with quotes evaluated without discussions unless deemed necessary. Award is expected by August 30, 2026, and all work must be completed within 150 days of authorization to proceed. No budget amount is specified.