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About

taking ground engineering to a deeper level...

ICOS invented the slurry wall process and has operated in North America since 1964, when it constructed the foundation wall for the World Trade Center in New York. In 1997, Trevi acquired ICOS Boston to form TREVIICOS Corporation. This move advanced the company's objective to be a major presence in the North American market, and positioned TREVIICOS Corporation as a full service ground engineering company able to provide innovative applications, a broad range of techniques, and the highest level of customer satisfaction. We specialize in Dam Rehabilitation, Slurry Walls, Cutoff Walls, Secant Piles, Caissons, Jet Grouting, Deep & Shallow Mixing and Ground Improvement. Our vast experience in underground construction allows us to find innovative and cost effective solutions to even the most challenging construction projects. Our successfully completed projects around the country show our commitment to quality, safety, and on-time project delivery. We serve our clients nationwide from our headquarters located in Charlestown, Massachusetts.