Research (Vapor Intrusion from NAPL Sources and Groundwater Plumes)

Vapor Intrusion from NAPL Sources and Groundwater Plumes

In this work, we investigate a novel application of electrical resistance tomography (ERT) to characterize key parameters that affect VI pathway evolution. Laboratory tests are performed using an intermediate scale two-dimensional sand tank. The tank is instrumented with moisture and temperature sensors.

Schematic of the sand tank apparatus dimensions with reservoirs
Above: Schematic of the sand tank apparatus dimensions with reservoirs used to control water table elevation and moisture sensors installed along a vertical profile. Electrical resistance tomograhy (ERT) data was collected along a surface profile with changing saturation conditions.
Sand tank apparatus with moisture sensors and ERT instrumentation installed
Sand tank apparatus with moisture sensors and ERT instrumentation installed.
ERT inversion cross section
ERT inversion cross section.