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


Ground Improvement

Ground improvement is often needed to increase bearing capacity, reduce settlement, retard seepage, increase stability of slopes, and mitigate liquefaction potential. ENTACT is an industry leader in using various technologies to improve, treat, and reinforce existing ground conditions for environmental and civil applications.  We specialize in serving clients with capital expansion efforts and new and expanding facilities, including Liquefied Natural Gas (LNG) plants.   ENTACT self-performs this work – providing reliability and accountability that clients count on for cost and schedule control.  We have the resources needed to conduct our own soil mix designs and treatability studies, we own the specialized equipment needed to implement the work, and we employ some of the most experienced personnel in the industry.

Contact ENTACT
Mitch Wall
Business Development Manager – Louisiana
Bob Emerson
Business Development Manager – Texas
Edwin Rivera
Business Development Manager – Texas


  • 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 Improvement Services to Support Tank Pad Construction and Tank Farm Expansion
  • Ground Improvement for Plant Expansion
  • Ground Improvement for LNG Construction
  • Overlapping Columns
  • In-Situ Gravity Retaining Walls

Featured Projects

Active Refinery Tank Footprint Subsurface Ground Improvement Project

  • Subsurface soil treatment for 14 proposed tank footprints and 4 proposed pump pads
  • Treatment of 205,000 CY using type I-II Portland Cement
  • 8 FT dia. vertical auger overlapping columns achieved at minimum UCS of 200 PSI in 28 days
See full case study

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

Process Unit Area Soil Remediation

  • Soil remediation and ground improvement for existing refinery proposed Process Unit
  • In-Situ stabilization of ~86,000 CY of low pH impacted soils
  • Achieved a ph of greater than or equal to 6.0 and minimum UCS of 21 PSI in 28 days
  • 10 FT vertical auger and containment shroud to a depth of 22-26 bgs

Active Refinery Expansion RCRA Corrective Action

  • Soil remediation at existing refinery as part of RCRA Corrective Action
  • Demolition and removal of at and below grade structures
  • In-situ stabilization of 505,040 CY previously solidified F037 waste and oil sediments
  • Pneumatic conveyance boxes, bucket mixing; up to 26 FT depths; UCS of 2 tons per SF and to meet Remedy Standard A (residential) levels