This document provides details on a federal contract opportunity for construction work on the Sacramento River East Levee Project. The Army Corps of Engineers seeks a firm-fixed price contract to construct approximately 1.8 miles of various types of seepage cutoff walls along with related work such as utility relocations and contaminated soil remediation. The scope of work includes construction of soil-bentonite, slag cement-cement-bentonite, deep mix method, and jet grout cutoff walls. All work must be completed by December 2021 with levee reconstruction finished by September 2021. Bids are due by November 30, 2020 under Solicitation Number W9123821B0001. The estimated value of the construction is between $25-100 million. The NAICS code is 237990 and size standard is $39.5 million.