IN SITU TESTING: CPT - Seismic - DMT With a national presence Ground Investigation Ltd is a leading provider of in situ testing to the New Zealand geotechnical industry. We offer a full range of services including CPT, shear wave velocity testing and DMT. We have range of rigs that can access and test virtually any site on land or over water. In addition to this we can install push in piezometers and take direct push soil samples. Our staff have a wide range of international experience and the company director is a chartered professional engineer. This allows us to provide accurate data and knowledgeable service. Further to that, we are heavily involved in development of the CETANZ CPT Best Practice Guidelines so know the testing inside out. We have recently acquired a broadband seismometer for HVSR analysis. This can provide an accurate approximation of the fundamental site period used in seismic site subsoil classification. Please contact us to discuss our services and for any advice regarding the testing that we offer.