This site was thought to have been contaminated by previous landfill activities from an adjacent property and the demolition waste was likely to include asbestos.  Work on site was stopped until contamination risks were quantified.

EDC are recognised by ECan as suitably qualified to undertake contaminated land investigations under their Suitably Qualified and Experienced Practitioner (SQEP) list, which saved the client time and cost in terms of demonstrating EDC’s suitability for the work.

We were able to provide a fast response to assess the site, collect soil & water samples for testing, and liaise with the Local and Territorial Council staff to get the project moving again in a short period.


The development of a former industrial storage yard for residential purposes seemed to be too difficult for many developers until Horncastle Homes took up the challenge in 2015.

EDC provided innovative Environmental and Geotechnical Engineering solutions to the site constraints, providing subsequent design and supervision that effectively remediated and strengthened the ground for residential living.

The project has recently been completed and there are now 26 houses for Canterbury families to live in on what was barren land for more than a decade.

Re-establish culvert as a natural stream.


  • Recreate a natural stream with storm water capabilities.
  • Erosion and sediment caused by pipe removal.
  • Restore natural stream life-cycle.

Challenges met:

  • Rocks, boulders and branches added to replicate stream hydrology.
  • Shape and line stream gullies with geotextile and stone.
  • Replaced logs to create food supply.

More projects to follow soon

  • Environmental: Woolston, Christchurch

  • Environmental: Edgeware, Christchurch


  • More projects to follow soon