Engineering Geology Ltd

Engineering Geology Ltd has undertaken numerous geotechnical investigations for a wide variety of civil and mining projects as well as industrial, commercial and domestic develpoment projects. Our work has included investigations for subdivisions, land instability, foundations for commercial and domestic buildings, industrial developments, retaining walls and earthworks. We have also been involved in large projects including roads, pipelines, transmission lines, landfills, dams and quarries. Investigation and design of tailings storage facilities for large mining projects has also formed a large part of our work load.

Examples of projects in which we have had significant geotechnical involvement include: 

  • Hundreds of house and commercial sites in the Auckland region, particularly in the North Shore and Rodney districts  
  • Over 30 water storage dams throughout New Zealand
  • Pomalaa HPAL Nickel Project Residue Storage Facility, Sulawesi, Indonesia
  • Geotechnical investigations for SH 1 Ngaruawahia Bypass ($100 million construction cost)
  • Design of 7m temporary anchored retaining wall for the Orewa Pump Station
  • Investigations and supervision of earthworks for 20 or more lot subdivisions at Waimauku, Warkworth, Puhoi, Gulf Harbour, Helensville, Stillwater and Kaipara
  • Salvation Army headquarters, Silverdale
  • Electrical transmission tower alignments in Auckland, Northland, Gisborne and New Plymouth
  • Rock slope stability review, Whitford quarry
  • Geotechnical reviews for SH 1 motorway , Albany to Puhoi (ALPURT) (Stages A & B1)
  • Peer reviews for Sanitary Landfills at Redvale, Rosedale, Whitford, Greenmount, Hampton Downs, Gisborne and Kate Valley 
  • Review of Wairoa water supply tunnel, Hunua
  • Martha Mine (Waihi) - tailings dams, water storage ponds and other project infrastructure
  • Macraes Gold Project (Macraes Flat) - tailings dams, water storage and sediment ponds
  • Reefton Gold Project (Reefton) - tailings dam, waste rock stack, sediment ponds and Process Plant
  • Mangatangi Water Supply Dam
  • Te Awananga Hydro Electric Project, Chatham Islands
  • Goro Nickel Project, New Caledonia (US$4.3 billion project) - Geotechnical Design Review Engineer