The PCB Warehouse site sits in Garapan, in the Commonwealth of the Northern Mariana Islands. The local government used the facility to store drums of contaminated liquids. EPA placed the site on the Superfund National Priorities List in September 1983 after an initial assessment in August 1981.
The main concern was exposure to contaminants stored in the shelter, with risks tied to people ingesting or touching those materials. The site is not classified as a groundwater site, so contamination concerns centered on the stored waste rather than subsurface water.
EPA conducted a removal action from November 1983 to April 1984. Workers repacked and disposed of the contaminated drums and crates off-site. Post-cleanup testing confirmed the wastes had not spread to the surrounding area. Construction was completed on March 7, 1986, and EPA deleted the site from the National Priorities List on that same date.
Human exposure across the entire site is currently under control. There are no unacceptable exposure pathways. Physical construction of the cleanup is complete. However, the site has not yet achieved sitewide ready for anticipated reuse status, which means one or more criteria for meeting all cleanup goals, or required land-use controls, have not been fully satisfied. Remedial investigation, formal remedy selection, and remedial action have not been initiated, reflecting that the removal action addressed the contamination before those steps were needed.
Community members with questions can contact the Community Involvement Coordinator or the Remedial Project Manager.