Tritium Migration in an Injection Well System: Decoupling Physical and Chemical Transport Processes in the Field
Seaman, John C.
Bertsch, Paul M.
Strom, Richard N.
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A series of groundwater tracer studies designed to evaluate the environmental impact associated with subsurface injection of remediated groundwater was conducted on the Department of Energy's Savannah River Site in conjunction with ongoing reclamation activities. Tritium breakthrough illustrated the heterogeneous nature of the subsurface system, suggesting that despite the coarse texture of the Coastal Plain Sediments, groundwater flow rates varied dramatically within certain regions of the aquifer. In addition, tritium breakthrough in replicate studies using similar injection rates and tracer volumes was essentially identical and. differed dramatically from the transport behavior observed for anionic tracers, such as bromide (Br⁻) and clhoride (Cl⁻), often considered conservative (i.e. non-reactive) in groundwater transport studies.