The former military water pump station’s electrical transformers and other equipment contained oil with polychlorinated biphenyls, or PCBs, a cancer-causing chemical.
As per the site assessments, PCBs had leaked from the pump station equipment into the ground in 2007.
EPA regional administrator for the Pacific Southwest Jared Blumenfeld said the excavation of hundreds of tons of toxic soil restores the land for use by the residents of Guam.
"EPA thanks the community of Agana Springs for its cooperation during our cleanup operations," Blumenfeld said.
Cleanup at the site was began in December 2011, and the agency invested about $650,000 for the restoration of the area.
Since December 2011, around 320 tons of PCB contaminated soil was removed from the area of the former water pump station and shipped off to a hazardous waste site on the US mainland for proper disposal.
In addition to Guam EPA, the US Coast Guard, and the Guam Historic Preservation Office supported with the cleanup effort.
