4Sight provides cost-effective and time-efficient investigations of potentially contaminated land to satisfy consenting requirements for property developers.

The project

4Sight has conducted preliminary and detailed site investigations of proposed residential development sites, where the land has previously been used for:

  • Orchards;

  • Market gardens;

  • Timber mills;

  • Petrol stations;

  • Fertiliser sales and storage;

  • Manufacturing sites.

We carry out all of our investigations in accordance with the Ministry for the Environment's Contaminated Land Management Guidelines and meet the requirements of the National Environmental Standard for Assessing and Managing Contaminants in Soil to Protect Human Health.



The approach

We review historic and council records, conduct site inspections and reconstruct site histories to evaluate their potential risks. In the interest of saving the client time and money, we also sometimes conduct limited sampling during our preliminary investigation.

After analysing our results from the preliminary investigation, we determine if the potential risk will allow the proposed activity to be consented. We then normally negotiate with councils to allow additional investigations to take place alongside any planned earthworks, thus saving the client additional costs.

The Outcome

Thanks to our in-depth understanding of the regulatory requirements, and our innovative investigative approaches such as composite sampling and field screening for heavy metals, we've been able to save clients time and money and have helped to assure a fast and smooth consenting process. 

Talk to an Expert

Hi - I'm Aaron Andrew.  If you have a question regarding any of our services, I'd like to help.

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