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This document appears to be a Request for Proposal (RFP) for a fish passage improvement project at Lock and Dam 22 on the Upper Mississippi River in Missouri and Illinois. The U.S. Army Corps of Engineers, Rock Island District has a requirement for the demolition and construction of a rock ramp fishway, concrete bridge, ice and debris boom, sheet piling, concrete work, earthwork, stone/boulder placement, access ramps, a building, electrical work, and site restoration. The NAICS code is 237990 with a $45M small business size standard. The estimated range for the project is between $25,000,000 and $100,000,000, with a completion timeline of 898 consecutive calendar days. The procurement is unrestricted and will be awarded using a best value tradeoff process. Questions regarding the project must be submitted through the Projent system.