In the months leading up to the preliminary assessment, EPA gathered information on the property to determine whether a site investigation under the Comprehensive Environmental Response, Compensation and Liability Act (CERCLA) was warranted. EPA determined to proceed with an investigation and EPA began procuring contractor services to conduct the preliminary assessment.

New information presented to EPA in summer 2019 by the community indicated the potential for another waste disposal area located near Norwood Park. Further research revealed that an open dump existed at the east end of the Park. This information was confirmed through historic aerial photography and careful review of archival newspaper clippings. This area is being referred to as the Old Norwood Dump.