To detect and delineate orientation of plume including depth to top and bottom, and to determine migration direction.

Topography was flat and therefore no elevations were incorporated.
      - Data acquisition time: six days
      - Lineal coverage: 4000 feet
      - Line separation: 500 feet
      - Data reduction & plotting: two days

Plotted resistivity values clearly show a well defined contrast from dry to partially saturated alluvium. The dashed line shows the orientation and migration direction of the plume relative to the source. Note how resistivity values decrease downgradient to the right. The increased total dissolved solids (TDS) and high moisture content allows the plume to be well defined due to the associated low resistivity values.

Buried solid waste detection, plume mapping, clay horizon identification, leak detection and alluvial characterization.