The Department of Defense, through the U.S. Army Corps of Engineers, is seeking proposals for Operation and Maintenance Services at the La Chuleta Material Management Area (MMA) Site in Rio Puerto Nuevo, San Juan, Puerto Rico. This procurement involves a Firm-Fixed Price contract with a base period of three years and two optional twelve-month extensions, totaling five years, aimed at ensuring effective management and remediation services. The selected contractor will be evaluated based on their technical approach, past performance, and price, with a focus on small businesses as this opportunity is a total small business set-aside. Interested parties should prepare to submit proposals via the Procurement Integrated Enterprise Environment (PIEE) system, with solicitation documents expected to be available around March 28, 2025. For inquiries, contact Katrina Chapman at katrina.l.chapman@usace.army.mil or Jose Vazquez-Torres at jose.o.vazquez-torres@usace.army.mil.