TRC, the firm conducting the work for Exide, and CT DEEP have just released a monthly project update for the cleanup of lead impacted sediment by hydraulic dredging in the Mill River.
The company is currently in the process of dredging, dewatering the sediment, treating the filtrate water from the dewatering process, and discharging treated water back to the Mill River. All of the sediment dewatering and water treatment work is occurring at the facility on Exide’s property in Fairfield.
In September, the following activities took place:
- Dredging continued in Area II with planning underway for Area IV dredging. Dredging of the Area IV started on October 1st, the end of the shellfish spawning restriction period. The turbidity meters (yellow buoys with solar panels), turbidity curtains (floating yellow items), and the large orange pipeline that conveys sediment to the Exide property were moved as dredging progressed in Area II;
- Dewatering of sediment and treatment of filtrate continued at Exide’s property;
- Monitoring and sampling also continued, as required by CT DEEP.