Services | Remediation Construction

Assuring continuity through final construction

A turning point in any remediation project is the moment when investigation and design shift to field implementation. The handoff from the design team to the construction team introduces risk. Your completion plan is jeopardized should the two not share a common understanding and vision.

Choosing HCS assures a smooth transition into construction and beyond. Our clients benefit from both a common vision going into construction, as well as the seamless integration of design and engineering resources throughout construction to completion.

Service Highlights


  • Capping
  • Slurry walls
  • Sheet pile walls
  • Solidification (in-situ and ex-situ)
  • Permeable reactive barriers
  • Reactive sediment capping
  • Conventional sediment capping
  • Landfill


  • Heavy metal stabilization (in-situ and ex-situ)
  • Thermal desorption
  • Chemical oxidation
  • Activated carbon
  • Synthetic resin
  • Air sparging, air stripping and soil vacuum extraction


  • Shallow excavation
  • Braced excavation
  • Near-shore sediment excavation
  • Sediment dredging

Contracting approaches

  • General contractor (may self-perform some work)
  • Design/build (may self-perform some work)
  • Construction management at risk (may self-perform some work)
  • Agency construction management
  • Design/bid/build