Distribution of radionuclides in L-Lake surface sediments phase 3

Gamma-emitting radionuclides in L Lake were examined in situ with an underwater High Purity Germanium (HPGe) detector and further studied by retrieving various sediment samples for analysis by HPGe gamma spectrometry. The predominant man-made radionuclide detected was cesium-137. These measurements constituted Phase 3 of a four phase strategy for characterizing L-Lake contaminants. The data provided by these studies will be utilized in the preparation of an Environmental Impact Statement that evaluates the consequences of discontinuing river water pumping to the man-made cooling water reservoirs on the Savannah River Site. A site evaluation report will also be prepared for the L-Lake basin