Superfund Site Profile
The 76,000-acre Adak Naval Air Station (NAS) site is located on Adak Island, near the western end of the Aleutian Islands, Alaska. Between the early 1940s and 1997, NAS served as a key operations and supply location for United States military forces. Site activities during that time included disposal of hazardous substances on the island, including landfills, storage areas, drum disposal areas, spill sites and pits for waste oil and fire-fighting training. Some of these hazardous substances included petroleum, chlorinated solvents, batteries and transformer oils containing polychlorinated biphenyls (PCBs). These activities contaminated ground water, sediments and soil with hazardous chemicals. All site investigations are complete and remedy construction is nearing completion. Long-term monitoring is ongoing.