Overview
Under contract to Westinghouse Savannah River Company (WSRC), HGL has provided a broad range of technical services to support site investigation and environmental restoration activities at different areas of the SRS. The SRS is a DOE nuclear materials processing center that has been operating since the early 1950s. Site contaminants include chlorinated solvents and various radionuclides (Am-241, C-14, Cs-137, I-129, Pu-238, Pu-239, Sr-90, and Tc-99). Environmental cleanup began in 1981. HGL identified, developed, and applied model simulation technologies to conduct comprehensive analyses of groundwater flow and contaminant transport in the unsaturated zone and underlying groundwater systems. The analyses supported risk assessments and engineering design evaluations.
| Project Highlights | |
|---|---|
| Environmental Assessment | |
| ✔ | Performed a hydrogeological design evaluation of the saltstone low-level nuclear waste disposal facility in the Z-area at the SRS. |
| ✔ | Developed a variably saturated flow and radionuclide transport model to evaluate the design of a tilted cap and drain system surrounding waste canisters. |
| ✔ | Performed a groundwater pathway analysis at the Old Burial Ground facility to assess potential impacts of tritium releases on Four-Mile Creek. |
| Groundwater Restoration | |
| ✔ | Provided groundwater modeling and related technical expertise to support groundwater restoration activities at multiple areas of the SRS. |
| ✔ | Reviewed site characterization reports, evaluated hydrogeological data, provided advice on tracer test design and implementation, assessed surface water/groundwater interactions, conducted 3-D modeling analysis and design, and evaluated groundwater extraction systems for plume remediation. |
| Facilitation/Public Outreach | |
| ✔ | Provided technical briefings to WSRC and assisted its personnel in preparing technical briefings and presentation materials for meetings with DOE and regulators. |
| ✔ | Participated in DOE Integrated Technology Demonstration and Plume Focus Area work group meetings. |
