LORAN Station (former) Yap LTM (Post Cleanup Monitoring)

The objectives at LORAN Station Yap are to perform a supplemental Remedial Investigation (RI) following the recommendations detailed in the December 2025 RI Report. This will be accomplished through the following actions: 1. Removal of 400cy of lead and PCB contaminated soils from specific DUs and DAs in Area A. This will be followed by confirmation sampling. 2. Multi-Increment sampling of sediment from specific DUs in Landfill-1 to track the anticipated decline of PCB concentrations. 3. Biota sampling from both inside and outside the Maakiy Causeway to track the anticipated decline of PCB concentrations. 4. Inspect and remove debris that was marked and left during the last investigation.