The St Clair Shores PCB Drain Site is located in St Clair Shores, Michigan. The site encompasses a several block area where polychlorinated biphenyls have been documented to be present in significant quantities in an underground utility corridor. The PCBs constitute a potential threat to the environment. The storm sewer is approximately 15 feet underground. The PCBs are migrating into the storm sewer which empties into two canals connected to Lake St Clair. Some PCBs have been found in surface areas of the site and will be addressed during the removal action. U.S. EPA previously conducted work in this area at the 10 Mile Drain Site. U.S. EPA conducted a removal of PCBs from sediments in two canals and cleaned the storm sewer system as part of this cleanup. At the time of the original cleanup, U.S. EPA assumed the PCBs were from an illegal dump into the sewer system. Subsequent re-contamination of the sewer suggested that a PCB source may be present and causing re-contamination of the areas previously cleaned by U.S. EPA.
