Audited Plants by Name

Plant Audits as Determined by the Plant Audit Committee


Company Plant Location MPa Start Date Expiry Date Certificate
Quality Roading and Services (Wairoa) Limited Wairoa 40 19 Feb 2024 20 May 2024 Download PDF


  1. (Satellite) Plant which operates intermittently, as a satellite of another plant. It uses the same materials, mix designs and personnel as the parent plant.
  2. * Interim audit certificate. Usually on 3 month period.
  3. MPa indicates highest mix strength recorded and accepted by the Audit.
  4. Mixes over 50MPa are subject to specific agreements with client and are designated Special Concrete as defined in NZS 3109/NZS 3104.