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Webinar – Australian Standards working group for AS4482 replacements

 

A Joint ALGA – ACLCA Initiative

The contaminated land industry is entering a period of significant change with the withdrawal of the AS 4482 contaminated land sampling standards and the proposed adoption of the ISO 18400 series. While many practitioners are aware that standards are evolving, there is often limited understanding of how international standards are reviewed, adapted and ultimately adopted within the Australian Standards framework.

Developing and adopting standards is a complex process involving collaboration between Australian and international experts, technical committee review, and consideration of local regulatory and industry needs. Understanding how this process works provides valuable context for the changes currently occurring within contaminated land practice.

The transition from long-established Australian standards to internationally harmonised approaches also presents a range of challenges. Balancing consistency with existing regulatory frameworks, managing transitional arrangements, ensuring standards remain fit for purpose across diverse Australian conditions, and addressing differences in practitioner expectations all play an important role in the adoption process.

In this webinar, our speakers will explore:

  • How international standards are developed and become Australian Standards.
  • The role of Australian experts in international technical committees.
  • How ISO standards are assessed for suitability within the Australian context.
  • Pathways for the direct adoption of international standards.
  • The transition from AS 4482 to the ISO 18400 series and the factors driving change.
  • Challenges associated with implementing internationally harmonised standards across regulatory and industry environments.
  • Opportunities for industry professionals to contribute to the future development of standards.

 

Practical examples will provide a behind-the-scenes perspective on the standards development process and demonstrate how decisions made within standards committees influence contaminated land investigations, reporting and professional practice across Australia.

This webinar will be particularly valuable for contaminated land consultants, auditors, regulators, laboratories, site owners, and environmental professionals involved in site investigations and assessment. A live Q&A will follow, and the session will be recorded.

Speakers

André Smit

André Smit

Technical Director / Site Auditor
GHD

Andre Smit is a Technical Director with GHD and a NSW and Queensland accredited Site Auditor. Based in Sydney, he has 24 years of experience in contaminated land assessment, remediation, and environmental auditing, and regularly supports complex projects throughout Australia. Andre is the ACLCA representative on the Australian Standards EV-009 Soil Sampling and Analysis Committee.

Tony Scott

Tony Scott

Senior Principal / Site Auditor
Tetra Tech Coffey

Tony Scott is a Senior Principal with TetraTech Coffey and is a NSW accredited Site Auditor and previously an accredited Auditor in Vic, SA and WA. Tony who is based in Sydney, has 42 years’ experience in geo-environmental consulting and has been an accredited auditor for nearly 30 years. Tony is the ALGA representative on the Australian Standards EV-009 Soil Sampling and Analysis Committee.

Event Details

Start Date: October 27, 2026

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