Transmission Main Installation Through Contaminated Soil

During the reconstruction project of two water transmission mains for the City of Akron, Ohio, contaminated groundwater was discovered in an open trench. This incident delayed the continuation of the project until a method could be developed and plans prepared to complete the construction of this portion of these vital mains. The following paper describes the design, materials, and procedure used to successfully replace a pair of antiquated steel transmission mains through a 160 m (525 ft) long area containing heavy petroleum contamination. Completion of this section of mains restored full operation of the water transmission main system and allowed the replacement project to continue. Prior to the design of all major transmission main projects, it is recommended that environmental exploratory studies be performed.