New South Wales W: https://www.epa.nsw.gov.au/your-environment/contaminated-land/site-auditor-scheme/accredited-site-auditors
Northern Territory W: https://ntepa.nt.gov.au/your-business/public-registers/register-of-qualified-person
Queensland W: https://www.qld.gov.au/environment/management/environmental/contaminated-land/auditors/auditor-engagement
South Australia W: https://www.epa.sa.gov.au/environmental_info/site_contamination/auditor_accreditation
Western Australia W: https://www.der.wa.gov.au/your-environment/contaminated-sites/53-contaminated-sites-auditors