FAQ

The Record of Decision was released in January 2025. The consent decree process is underway. The consent decree will detail the full project scope of work. Once finalized, consent decree documents will be made available on this site.

Slurry walls are subsurface barriers that impede or stop groundwater flow.

The subsurface wall would be designed to encompass the two landfills that are impacting groundwater. We anticipate it would be between 2 to 4 feet thick and between 100 to 125 feet deep, designed to encompass the LDU1 source area and prevent impacts to groundwater.

Slurry walls were a component of the selected remedies for 86 other Superfund sites. EPA and the National Research Council have both independently conducted studies to verify the effectiveness of slurry walls in achieving remedial action objectives.

The Feasibility Study ranked a slurry wall highest among all options to effectively cut off the landfills from the groundwater. A slurry wall is a proven and effective tool for reducing impact quickly.

Eighty-six Superfund sites across the country have included a slurry wall in the selected remedy. Additionally, the slurry wall alternative would include monitoring wells both inside and outside the slurry wall to make sure it is working.

Should EPA choose this remediation option, CFAC anticipates a one to two-year construction period to complete.

A comprehensive monitoring program will be implemented to monitor the performance of the remedies. In addition, the Superfund process requires EPA to perform a comprehensive review every five years to ensure the implemented remedy continues to protect human health and the environment and complies with all applicable laws.

The selected remedies listed in the Record of Decision will be conducted on site, there is no need for extensive truck or train traffic hauling waste through the community. Community impacts during construction are expected to be minimal.