W. A. Petrakis has the ability to Pipe Burst as another trenchless technique. Pipe Bursting is the process of replacing mainline sewers using a pneumatic mole, cable winches, and fusible HDPE pipe. This process expands and ruptures the existing sewer line while simultaneously replacing it with a new pipe. Because the replacement is accruing in-kind of existing sewer line, minimal excavation is required to complete the project.