Bechtel

Marine Levee Design and Construction

Bechtel needed a reliable perimeter levee concept for a new industrial facility planned on a low-lying marsh site with difficult geotechnical and hydrological conditions and a high risk of flooding. The work focused on developing a 10,000-foot levee design in accordance with U.S. Army Corps of Engineers guidance, along with a construction sequence and supporting documentation for field execution. The proposed capability included levee layout and typical cross sections sized to address elevation, slope, settlement, factor of safety, design life, mitigation measures, cost considerations, and owner requirements. It also defined construction staging, inspection hold points, and weather-related considerations, and incorporated sediment and erosion control features to support Stormwater Pollution Prevention compliance. Together, these materials were intended to provide a buildable levee concept, clarify construction constraints and maintenance considerations, and enable the site to be protected from flooding before further facility construction proceeded.