LNG EXPORT FACILITY SOIL IMPROVEMENT

ENTACT performed soil improvement and design-construct earth retention services in support of the expansion of a liquefied natural gas (LNG) terminal on the Gulf Coast. The facility, originally constructed as an import terminal, is being upgraded to include liquefaction and export capabilities. In preparation for this expansion, ENTACT improved subsurface conditions to facilitate equipment access and support construction of the perimeter storm protection levee system.

The project required large-scale soil stabilization of 2,200,000 cubic yards of dredged fill material. This work was completed within a 10-month timeframe. In addition, ENTACT was contracted to complete design-construct services to support excavation and construction of large stormwater ponds for the future LNG facility. This scope included the design and construction of deep mixing method (DMM) earth retaining structures and sheet pile cutoff walls.

Scope of Work:

• Stabilized 2,200,000 cubic yards of dredged fill using excavator bucket mixing and dry cement
• Designed and constructed DMM earth retaining structures, treating 280,000 cubic yards of soil
• Installed 270,000 vertical square feet of PZC-13 sheet piling with interlock sealant
• Supported construction of three large permanent stormwater ponds for the future LNG facility

ENTACT’s integrated remediation and geotechnical construction services provided a stabilized foundation for the terminal expansion and advanced the construction of critical infrastructure to support the LNG facility’s liquefaction and export operations.