TREVIICOS Corporation was founded in 1997 when the Italian TREVI group acquired Boston- based ground engineering firm ICOS, t ... o combine the worldwide experience of TREVI with ICOS' knowledge of the North American market. TREVIICOS is a full- service ground engineering company able to provide innovative applications and a broad range of techniques such as slurry walls, cut-off walls, secant piles, caissons, jet grouting, deep & shallow mixing, and ground improvement. We particularly pride ourselves in our Dam and Levee rehabilitation work throughout the United States with the US Army Corp of Engineers, foundation works for tunnels, and building the foundations of the ever changing Boston skyline. We are committed to quality, safety, and timely project delivery for our clients. Our North American headquarters are in Charlestown, Massachusetts. read more