OU-06 ROD - Selected remedy is in-situ bioremediation, monitored natural attenuation, long term monitoring, institutional controls and air monitoring. SOurce was contaminated soils that were addressed unde OUs 01, 02, and 03.
FEDERAL FACILITY RECORD OF DECISION (ROD).
OU 13 comprises approximately 17 acres in the southern portion of the installation. The western portion of OU 13 is used as a storage area for items such as metal beams, pipes, sand, gravel, and recyclable materials. The eastern portion, referred to as the ?low-lying wooded area,? is surrounded by asphalt roads and forest wetlands on both sides of Kingsland Creek. The primary source of OU 13 contamination was an above-ground storage tank fuel oil spill in November 1978. The contaminants of concern are metals, PAHs, and dioxin. The ROD documents selection of the following remedy: 1) excavation and off-site disposal of approximately 55 yards of surface soils posing a risk to ecological receptors in the low-lying wooded area of OU 13; 2) backfill of the excavations with low permeability soil; 2) long- term monitoring to ensure that the material underneath the low permeability soil remains isolated from ecological receptors; 3) institutional controls to restrict land use to industrial use and prevent exposure to subsurface soils with contamination exceeding the human health risk-based remedial action goals.
OU-7 FIRE TRAINING AREA GROUNDWATER ROD
THIS ROD SELECTS IN-SITU BIOREMEDIATION IN SOU