The Department of Defense, through the Department of the Army, is seeking contractors for the construction of Environmental Protection Shelters (EPS) at Ellsworth Air Force Base (AFB) in South Dakota. This procurement aims to provide essential infrastructure that supports environmental protection measures at the base, ensuring compliance with safety and environmental regulations. The project falls under the NAICS code 236220, which pertains to Commercial and Institutional Building Construction, and is categorized under the PSC code Y1BZ for the construction of other airfield structures. Interested parties can reach out to Margarette Wolfe at margarette.e.wolfe@usace.army.mil or by phone at 402-995-2063 for further details, with the presolicitation notice updated as of December 30, 2025.