This Sources Sought Notice is for market research only and is not a solicitation; no contract will be awarded from it. The U.S. Army Corps of Engineers, Louisville District, is seeking qualified and interested businesses—including small business, 8(a), HUBZone, SDVOSB, and WOSB concerns—capable of performing HVAC services at Olmsted Lock and Dam, 634 New Dam Road, Olmsted, IL 62970. The applicable NAICS code is 238220 with a $19 million size standard, and the estimated contract type is a Blanket Purchase Agreement with a 5-year period of performance. If a solicitation is released, it will be synopsized in SAM, and the acquisition strategy will be posted after market research analysis. Responding is voluntary, no costs will be reimbursed, and not responding will not preclude future participation.