Soil Contamination Technology

The Challenge of Soil Contamination Technology

Historical industrial uranium enrichment and other activities at the PGDP resulted in localized contamination of soil and sediment with radionuclides, PCBs, process related metals, and organic contaminants.  Currently, the U.S. Department of Energy's (DOE) environmental restoration activities at the PGDP in accordance with the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) is addressing legacy environmental contamination at the facility including contaminated soils and sediments.

Remediation

The Oil Land Farm is the source of the Southwest plume's groundwater contamination. The Oil Land Farm lies south of the C-745-A Cylinder Storage Yard, where oils were dumped from 1973-1979 to "biodegrade".  The above soil sampling shows the level of contaminants found. 

Soil mixing, a process that stirs the soil at depths up to 50' with steam, activated carbon, and reactive iron, in an attempt to evaporate the TCE, is slated to begin late 2013.

Oil Land Farm

Remedial Investigation/Feasibility Study 

AOC 492

The Kentucky Research Consortium for Energy and the Environment (KRCEE) works with DOE to introduce new approaches and technologies to PGDP’s environmental restoration program.

To assist the research in finding new Soil Contamination Technologies, KRCEE performed Field Surveys of one site; the same site the DOE focused on to establish their remediation goals.  Field work for the demonstration project focused on surface soils (0-1 foot) in and around the AOC 492 area, a known contaminated area located near the Little Bayou Creek outfall.

KRCEE real-time field survey included:
  • logged gamma walkover surveys (GWS) for gamma emitting radionuclides
  • discrete in-situ, in place, gamma measurements
  • in-situ High Purity Germanium (HPGe) gamma spectroscopy for radionuclides
  • in-situ and ex-situ, excavated and tested in the lab, X-Ray Fluorescence (XRF) for metals including total uranium
  • field test kits for polychlorinated biphenyls (PCBs)