The site was investigated by the Environmental Protection Agency. Incineration was chosen as the cleanup remedy for PCB contaminated soils, while solidification/fixation was chosen for soils with leachable lead and cadmium contaminants. A transportable thermal treatment unit was erected, and the PCB contaminated soils and lake sediments were excavated and then incinerated prior to backfilling. A Resource Conservation and Recovery Act (RCRA) Subtitle D landfill was built to receive stabilized soils and ash, which remain contaminated with leachable lead and cadmium.
Additional work included the EPC of a 100-gallons-per-minute wastewater treatment plant, which consists of two 1.5-million-gallon steel tanks to hold contaminated water, a treatment unit designed for chemical and physical treatment as well as sand and carbon filtration and two 400,000 gallon holding tanks.
Other work included construction management of a 322' x 195' RCRA Subtitle D Landfill constructed with a bentonite-clay impermeable liner.
Fluor also provided services for construction of roads and security fences, demolition of a PCB-contaminated building, decontamination of a PCB, lead and asbestos contaminated building, removal of underground storage tanks and excavation of contaminated soil at numerous sites. Fluor designed, installed, maintained and operated air monitoring stations at seven locations around the perimeter of the refuge. Fluor was also responsible for obtaining all the air and water permits required for the construction and operation of the remediation.