The United States Army Corps of Engineers (USACE) was responsible for remedial action of this Superfund site to remove volatile organic compounds from the soil, such as trichloroethylene, pesticides and polychlorinated biphenyls and metal concentrations.

Conti Federal  partnered with the USACE, Environmental Protection Agency, New York Department of Environmental Conservation, designers and other stakeholders using early contractor involvement (ECI) to accelerate project completion. This relatively new approach facilitates close collaboration among designers, stakeholders and constructors who work together to identify and solve challenges more efficiently, eliminating separate steps for problem solving and approval.

Conti Federal excavated and removed contaminated soils in six areas of concern, including offsite residential properties. The team took extra measures to ensure safety at all stages of remediation, including evaluating for potentially harmful soil vapor intrusion and performing real-time perimeter air monitoring. During the landfill phases, Conti Federal constructed a multilayer impermeable cap 12-acre landfill and placed fine grading with three geocomposite layers and rip rap swales on and around each landfill. The team also installed a site-wide groundwater contamination monitoring system.

Using the innovative ECI approach, Conti Federal remediated the site in record time, and the project team has delivered industry presentations to share its experience with this alternate delivery method.

Key features of the project included:

  • Performed preconstruction services
  • Excavated 55,000 cubic yards of contaminated soil to 20-foot depths
  • Removed underground storage tanks
  • Installed 12-acre landfill cap
  • Backfilled excavated areas with 33,000 cubic yards of clean material
  • Restored disturbed surfaces to original or proposed plan conditions

Conti Federal was recognized by USACE with the Commander’s Coin for Excellence for this project.