The task order involves the removal, fabrication, and installation of two culvert valve assemblies at Cannelton Lock and Dam in Cannelton, Indiana, including unwatering and rewatering of the culvert valve chamber. The estimated construction magnitude is between $5,000,000 and $10,000,000. Award will be based on the lowest evaluated price, and proposals must remain valid for 60 calendar days after the proposal due date. A site visit is available with details in the clauses, and all inquiries must be submitted via ProjNet using the provided bidder key. Documents are available on SAM.gov, and proposals must be submitted through the PIEE solicitation module.