The first steps to collect, control and treat groundwater at the Coke Ovens site will begin in September. The Sydney Tar Ponds Agency announced today, Aug. 12, that Hazco Environmental Services of Sydney has been awarded the contract to build underground cut-off walls to keep water from reaching and leaving the property. “This project represents the start of remediation at the Coke Ovens site,” said Frank Potter, president of the Sydney Tar Ponds Agency. “More clean-up opportunities are on the way.” The walls will be built along the north and south sides of the 68-hectare property. The north wall will be made from betonite/soil slurry, which is a soft clay and water mixture. The south wall will be made from clay. The $800,000 project is expected to take about three months. Other clean-up activities beginning soon are the installation of a groundwater collection system and a water-treatment facility. Completed work includes the removal of all above-ground buildings and structures, and building two channels that direct water from contaminated areas. Hazco Environmental Services established an office in Sydney more than two years ago.