This is a sources sought notice for market research regarding the removal and replacement of a critical unwatering pump assembly at the Bonneville Lock and Dam's Second Powerhouse in Skamania County, Washington. The U.S. Army Corps of Engineers Portland District anticipates issuing a firm-fixed-price construction solicitation around August 2026, with an estimated contract award in September 2026 and a construction period of 180 days. The estimated construction cost is between $250,000 and $500,000. Key requirements include demonstrating relevant experience with large pump replacements and holding a current Cybersecurity Maturity Model Certification (CMMC) Level 1.