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Environmental and Geotechnical Construction Services
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Performing remediation nationally for over 25 years, we are the leading provider of remedial construction solutions to private industry.

Environmental Remediation & Geotechnical Construction Services

ENTACT is a national provider of environmental and geotechnical construction solutions. With over $2 billion in services provided, we rank as the largest provider to private industry in the United States. Our clients value our focus, creativity, and resourcefulness. Because we self-implement, we are able to offer efficient, accurate, and timely solutions. ENTACT combines the knowledge and expertise of a local firm with the stability and resources of a national firm.

ENTACT possesses expert in-house personnel and state-of-the art equipment to perform our projects. Our in-house personnel include project managers, field engineers, health and safety officers, superintendents, equipment operators, and technicians. We have a large fleet of standard heavy equipment; specialty soil mixing, stabilization rigs, and attachments; and dewatering, slurry wall, and sheet pile installation equipment.

In addition, ENTACT has an in-house treatability laboratory dedicated to enhancing our waste treatment and solidification/stabilization efforts. Our projects often integrate several scope components and include a variety of media including soil, sediment, and groundwater. ENTACT’s field services adhere to fully-integrated project management, scheduling, quality assurance, and safety programs.

Our Services

Our field and technical capabilities enable us to create and deliver innovative solutions to many environmental and geotechnical construction challenges.

Site Preparation, Water  Management & Restoration

Site Preparation, Water Management & Restoration

  • Excavation
  • Stormwater Management Controls and Collection Systems
  • Demolition
  • Earth Retention and Dewatering Systems
  • Revegetation
Geotechnical Construction Services

Geotechnical Construction Services

  • Ground Improvement
  • In-Situ Gravity Retaining Walls
  • Deep and Shallow Soil Mixing
  • Earth Retention/Structural Support
  • Soilcrete and Overlapping Columns
  • Settlement and Liquefaction Mitigation
  • Sheet Piles, Soldier Piles and Lagging
  • Slurry Walls and Intercept Trenching
Cap & Containment

Cap & Containment

  • Composite Capping Systems
  • Soil Covers
  • CAMU and Cell Construction
  • Slurry Wall Construction
  • Landfill Construction
In–Situ & Ex–Situ Treatment

In–Situ & Ex–Situ Treatment

  • Solidification/Stabilization
  • Chemical Fixation
  • Chemical Oxidation
  • Bioremediation
  • Wet Soil Conditioning
  • Permeable Reactive Barriers
Sediment Removal & Management

Sediment Removal & Management

  • Mechanical Dredging
  • Coffer Dams
  • Dewatering and Treatment
  • Subaqueous Barrier Placement
  • Stream Realignment and Bank Stabilization
  • Wetlands Mitigation
Coal Ash Impoundment  & Landfill Closure

Coal Ash Impoundment & Landfill Closure

  • Dewatering Systems
  • Ash Management
  • Wet Ash Conditioning
  • Landfill Construction