The 'Kuil van Keet' Natural Attenuation Project

A special in situ groundwater direction sensor was developed for this project. As commercial sensors were too expensive to fit in the project's budget a simple device was made using a pulse heat source and 16 NTC's. This allowed directional measurements to be made with approx 11 degrees accuracy. This proved to be sufficient to differentiate evaporative groundwater flow towards the trees or radial infiltration after a heavy rainstorm. For results ask for full report (e-mail) or see under articles / publications at poster presented at Battelle's first contaminated sediments conference held in Venice Italy 10-2001.