Hercules has met all established remedial action objectives at the 009 Landfill as of 1999. A portion of the site is currently being reused by a car dealership to park cars.
In 2022, Hercules voluntarily performed high resolution site characterization and installed additional groundwater monitoring wells. In an effort to enhance the future protectiveness of the established monitored natural attenuation remedy for groundwater impacts at the site, Hercules worked with EPA and EPD to inject aquifer amendments along the eastern, down-gradient boundary of the landfill. The effectiveness of the aquifer amendments at accelerating natural attenuation of impacted groundwater will be measured through quarterly groundwater sampling events through the end of 2023. The library contains the work plan for the pilot test and the expanded pilot test.