Expedited Investigation and Remediation for Superfund Site Redevelopment

EnSafe not only shortened the time frame for readying an environmentally impacted site in an economically impacted community for beneficial reuse but also developed an innovative engineering design that fast-tracked the remediation of more than 170,000 tons of contaminated fill material and 2.75+ million gallons of groundwater. EnSafe worked closely with Macalloy Corp. to take a 147-acre, Cold War-legacy site from its inclusion on the National Priorities List (NPL) to remediation in less than six years — about half the typical duration of the Superfund process.

EnSafe developed an innovative remedy that treated site fill via onsite chemical reduction using mechanical mixing; groundwater was treated using in situ chemical injection to create a permeable reactive barrier.

EnSafe’s innovative design was crucial in remediating the site quickly, going from Superfund listing in October 1999 to redevelopment in early 2006.

The U.S. Environmental Protection Agency recognized Macalloy as the 1,000th “Construction Complete” Superfund site in the U.S. in 2006. The work also won two Engineering Excellence environmental category awards.

Services Provided

  • Remedial Investigation
  • Feasibility Study
  • Remedial Design
  • Remedial Action
  • Draft Record of Decision
  • Construction quality performance
  • 50%, 95%, and 100% design completion forms
  • Health and safety
  • Operation and maintenance plans based on CERCLA guidance