Geoscy LLC

We use GPR and ERI (electrical resistivity imaging) to map subsurface structures and layers that fail under some stress to cause slope instability. For instance, these techniques image subsurface clay-rich layers where ground water content can increase to the point of failure.

Using electrical resistivity imaging and, to a lesser extent, GPR, we map the distribution of subsurface wet and organic soil, weathered and fractured rock zones, and groundwater flow erosion areas. These are the common causes of ground subsidence.

Using GPR, we can recognize evidence for past human disturbance or occupation of a site. We can distinguish and locate metal, air pockets or voids, water-soaked materials, and boulders or cut stones.

We locate underground waste dumps, buried quarries containing trash, underground fuel tanks. We can detect pollutant plumes such as of LNAPLs (hydrocarbons) or DNAPLs (solvents).

We locate and map the thickness and extent of aquifer confining layers. We also map fractures in confining layers which serve as pathways for pollutants. 

We map the width and depth of caves and subsurface sinkholes. We can constrain the history of the sinkhole and mechanisms of collapse.