Sourcing aggregate

The National Plan for the protection of Kauri

In August 2022, a National Plan was launched to help protect Kauri from the PA pathogen. The National Plan includes 10 rules that apply to anyone who goes into Kauri forests, grows Kauri, or lives or works around Kauri. 

For more information, visit www.kauriprotection.co.nz/national-plan 

Here’s how to protect Kauri when planning an activity requiring aggregate:

• If possible, consider another location away from Kauri for the track, road upgrade or activity that the aggregate is required for. 
• Tracks, roadways, hardstands and house pads are to be designed and constructed to minimise the potential risk of PA introduction and/or spread.
• If Kauri cannot be avoided and earthworks are to be carried out within a Kauri Hygiene Zone, you must prepare an Earthworks Risk Management Plan beforehand. A ‘how to’ guide and a template for creating an Earthworks Risk Management Plan are available here.

When purchasing aggregate for use near Kauri Hygiene Zones:

• It is advised not to purchase from a quarry downslope or downstream of a known PA positive site.
• Ask the quarry or source of aggregate:
  • If they source material from within sub-catchments where there are Kauri forests and if there
    are any PA positive trees higher up in the catchment.
  • If they are or have been an approved supplier through an organisation. Can they provide evidence?
  • Is this ongoing or temporary?
    • If temporary, check what is the end date and if they still maintain a PA Risk Management Plan after preferred supplier expiry.
• If the quarry is in the same sub-catchment as Kauri, only purchase aggregate if they have a PA management plan and good biosecurity/hygiene practices. 

Note: At June 2025, no quarry or pit in Kauri lands has long term accreditation.

More information 

Auckland Council has quarries which are temporarily classed as accredited. For more information email kauri@aucklandcouncil.govt.nz. Contact your local Department of Conservation office for permits regarding public conservation land.