Contact us: 1-800-936-8228
Environmental and Geotechnical Construction Services


LNG - Ground Improvement

ENTACT has been an industry leader in on-site soil, sediment and waste solidification/stabilization for over twenty-seven years, stabilizing millions of tons of clean and impacted material for both environmental and civil applications using in-situ and ex-situ technologies. We specialize in site preparation for new and expanding Liquefied Natural Gas (LNG) facilities and developments.

We conduct our own soil mix designs and treatability studies, own the equipment (augers, silos, pumps, mixers, excavators, mixing heads, pneumatic conveyance boxes) and employ some of the most experienced personnel in the industry. ENTACT self-performs this work – providing a reliability and accountability that owners rely on for cost and schedule control.

Contact ENTACT
Mitch Wall
Business Development Manager

Featured Project - Freeport LNG Ground Stabilization

  • LNG terminal expansion including 3 LNG trains, gas pre-treatment unit and loading dock
  • Mass stabilization of over 2.2 M CY of soft dredged sediment and fill soils
  • Over 4.2 M CY excavation and backfilling
  • Pneumatic conveyance boxes, bucket mixing; 5-8 FT depths; UCS-25 PSI in 28 days
See full case study


  • In-House Project Management, Field Engineers, Health and Safety Officers, Superintendents, Equipment Operators, Technicians
  • Company-Owned Large Fleet of Standard Heavy Equipment
  • Company-Owned Specialty Soil Mixing and Stabilization Rigs and Attachments, Grout Batch Plants, Dewatering, Slurry Wall, and Sheet Pile Installation Equipment
  • Maintains a Fleet of Low Ground Pressure Equipment
  • In-House Bench Scale Treatability Laboratory
  • Fully Integrated Project Management, Scheduling, Quality Assurance, and Safety Programs


  • Deep Soil Auger Mixing
  • Shallow Excavator Mixing – Mass Solidification
  • Wet & Dry Soil Mixing
  • Soilcrete Columns
  • Soil-Cement Columns for Tank Pad Support
  • Overlapping Columns
  • In-Situ Gravity Retaining Walls

In-House Treatability Laboratory

To support our solidification/stabilization work, ENTACT has a fully functional bench scale treatability/geotechnical laboratory that is capable of tackling any type of study for impacted and non-impacted media, regardless of waste stream. This resource enables ENTACT to control costs and, more importantly, control the quality of the study.

Specific services provided by our laboratory include:

  • Material Homogenization
  • Sample Aliquot Preparation and Weighing
  • Reagent Weighing
  • Dry and Slurry Reagent Blending
  • Cylinder and Sample Preparation