This is a sources sought notice for market research on the Santa Margarita Levee Repair project at Marine Corps Air Station, Camp Pendleton, California. The estimated construction budget is between $50,000,000 and $100,000,000, with a total contract performance period of 1,096 calendar days. The work involves raising levee segments, installing relief wells and toe drains, constructing launch stone armoring, and performing vegetation restoration, among other repairs. The government seeks qualified contractors under NAICS 237990 (size standard $45M) to gauge competition and potential set-aside decisions. Interested firms should respond demonstrating relevant experience, bonding capacity, and capability in earthwork and levee construction.