A major lift station was under construction to replace an older station in the wastewater collection system in Sarasota, Florida.
The new station would eventually carry about a third of the total flow to the city’s wastewater treatment plant. During testing of a 36-inch influent line that crosses Hudson Bayou, city crews discovered significant groundwater intrusion through several holes, breaks and joint failures. This infiltration would overload and stress the treatment system, wasting capacity and shortening the life of plant equipment over time.
The first effort to repair the line was a trenchless epoxy-impregnated liner. While this largely nondisruptive repair has worked
