Located at the Department of Energy’s Savannah River Site, Pond B Dam is a zoned embankment dam with an asphalt-concrete mat on the upstream face for erosion protection. Our evaluation found it to be unstable under seismic loading conditions per FERC guidelines. To remedy this inadequacy, we prepared various alternatives that would avoid having to replace the dam completely, which would be costly since the pond’s sediments were contaminated with radionuclides. The final remedial design that we developed saved nearly $50 million over dam replacement.
The investigation, analysis, alternatives assessment, and remedial design for the project were completed under a fast-track schedule of seven months. All work was performed under DOE’s strict quality program. Our construction support included providing a full-time resident engineer to monitor construction.