Verdantas (as TIG Environmental) recently moved a multi-stakeholder project forward to completion, implementing a practical solution at a complex site.

As part of the Record of Decision at this Superfund site, numerous early actions were proposed for implementation prior to the development of a larger, more comprehensive remedy. We assisted our client in the design and implementation of a deep excavation to remove high levels of polychlorinated biphenyl (PCB) contamination along the riverbank.

The project was complicated by steep slopes and adjacent shoreline structures, as well as the potential integration with a separate upland soil removal operation and the overall river remedy.

We worked with our client to strategize and implement an interim action, which included dredging near-shore sediments. We also played a critical role in negotiating with the agencies and designing a sheet-pile cofferdam to enclose the operations. Our proposed solution was accepted by the client, the regulators, and the community.