Martin King who pioneered the use of GPR and EM techniques in NZ for engineering and environmental investigations, locating underground services, pipes, tanks, leaks, subsidence, sinkholes, backfilled areas, identify leachate, contamination plumes, bedrock, fault lines, soil stratigraphy, trenches, forensic and archaeological sites, unmarked graves,aquifers, pavement construction, steel reinforcing. GPR Geotechnical Services has an extensive track record of success with national, offshore and local clients.
Resistivity allows changes in soil layering, including depths to anomalous areas, to be identified.