SWMU 11 - Palisades Landfill CERCLA Landfill Site
Background
Palisades Landfill was the primary disposal area for all operations on Adak Island from the 1940s to approximately 1970. The landfill is situated in a ravine adjacent to Kuluk Bay, and a small stream (Palisades Creek) runs through it. Investigations in 1988 and 1992 found that chemicals were present in soil and sediment. Although no in-depth investigations were performed, the Federal Facilities Agreement parties concluded that performing an interim remedial action was the best option. Therefore, an interim action Record of Decision (ROD) was completed and signed in 1995. The interim action included covering the landfill and monitoring rock sole and blue mussel tissue in Kuluk Bay. The landfill was covered in 1996. Institutional controls (ICs) were implemented after they were established in the 2000 OU A ROD to ensure that the remedy remains protective of human health and the environment.
Identified Contaminants
Volatile organic compounds (VOCs), semivolatile organic compounds SVOCs, Aroclors, and metals
Current Actions
The Navy maintains and inspects ICs annually. The Navy conducts surface water/sediment sampling at three locations annually for closure monitoring. The Navy monitors rock sole and blue mussel tissue in Kuluk Bay on an every other year basis.
Landfill Institutional Controls
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Landfill Engineering Controls
Signs and soil cover are in place at the landfills. The signs and soil cover will be inspected annually, or as necessary, to ensure that the signs are legible and that the soil cover remains in place.
