Sources Sought Notice: DEPT OF DEFENSE is seeking small business firms for a potential Government requirement. The United States Army Corps of Engineers (USACE) Sacramento District (SPK) anticipates a potential requirement for design-build (DB) construction services to replace the existing HVAC system with a geothermal heat pump solution at the historic Hacienda building located at Fort Hunter Liggett (FHL) outside Jolon, California (CA). The 19,588 square-feet, 2-story building, currently used as a hotel, was built in approximately 1930 and is listed in the National Register of Historic Places. The project includes demolition and removal of existing equipment, installation of a geothermal bore-field, underground geothermal headers, new geothermal heat pump units, and seismic design category "D" braces. The estimated construction cost is between $1,000,000.00 and $5,000,000.00. Small businesses with the required capabilities are encouraged to submit capability statements to the primary contact listed. Responses must be submitted by 8:00 a.m. (PT) Monday, 11 March 2024.