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2001 Tracer/Time Lapse Imaging Test

The tracer/time lapse imaging test (TTLT) was conducted in a heterogeneous fluvial aquifer at the BHRS between August 1-18, 2001 to demonstrate, evaluate, and improve the capability to image temporal and spatial changes in an electrically conductive plume during a tracer test. This also provided quantitative results for geophysical, hydrologic, and combined hydrogeophysical modeling of plume detection, plume evolution, and permeability heterogeneity.

In-well equipment was designed and manufactured (in a collaborative effort with Michigan State University) to allow simultaneous logging with radar instruments for cross-hole imaging, collection of water samples, and head change measurements from isolated zones in a single well.  This allowed for the collection high-resolution water chemistry sampling and head-change data for quantitative calibration of attenuation differences detected by radar tomography.

Sources and Further Reading

Contact department to request PDFs

  • Test design, operation and preliminary results
  • Water sampling and analysis
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