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Lower Fox River Remediation LLC


Foth was retained by the Lower Fox River Remediation LLC in 2008 as the Owner’s On-Site Representative to provide engineering and scientific assistance on this multi-year sediment cleanup project, arguably one the largest of its kind ever undertaken. Our assistance has included contract preparation, extensive sediment characterization, remedial design review, remedial facilities construction oversight, pay request review, cost/schedule control, and remedial action implementation oversight.


The Lower Fox River contaminated sediment cleanup is the largest PCB cleanup project in the world. For the past decade, Foth has managed critical measures of the remedial action for compliance with the scope of work, including verification of dredge volumes, final dredge elevations, cover and cap placement thickness, and PCB residual concentrations. Foth also performs and manages the 30-year long-term monitoring work to evaluate remedy effectiveness.

After 25 years and over $1.5 billion expended, the cleanup project will conclude the active phase of remediation in 2020. Remarkably, we have been a major contributor over the entire 25 year span.


Understanding the Superfund process has allowed us to provide innovative approaches to advance key strategic client objectives at this site. It is estimated that, upon project completion, approximately 6.2 million cubic yards of contaminated sediment will be removed and hundreds of acres of engineered caps and covers installed, effectively restoring the Lower Fox River as a vital natural resource to local communities, the State of Wisconsin, and fishermen from across the U.S.


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