In 2006 Trac Trenching worked with Dunigan Bros. Inc. on a sewage installation project. The project took place on Gull Island within Gull Lake, near Kalamazoo, Michigan. The vehicles and equipment for the project all had to be transported to the island by barge. Trac Trenching installed all of the sewer leads to the homes on the island and provided the restoration work for the four month, $800,000 project.