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Contaminated sites guidelines are being updated to reflect:

DER is incorporating the amended NEPM in its updated guidelines and gazetting the technical components of the contaminated sites guidelines as guidelines under s 97 of the CS Act.

All site contamination assessment reports must be consistent with the amended NEPM.

See the amended ASC NEPM and schedules on the former Standing Council on Environment and Water (SCEW) website and the ASC NEPM Toolbox for calculators, spreadsheets and other supporting document.


Contaminated sites guidelinesReplacing Contaminated Sites Management Series guidelines

Interim Guideline on the Assessment and Management of Perfluoroalkyl and Polyfluoroalkyl Substances (PFAS)
– this guideline has been updated to incorporate enHealth's interim national guidance on human health reference values.

This document includes guidance on the below:

  • Assessing and managing PFAS contamination
  • Assessing risks to human health, the environment and environmental values
  • The availability and derivation of generic assessment levels
  • The remediation and management of PFAS impacted sites
  • Waste disposal

pdfAssessment and management of contaminated sites2.01 MB — new guideline published 30 December 2014.

  • Assessing and managing contaminated sites
  • Assessing risks to human health, the environment and environmental values
  • Generic assessment levels specific to WA and their application
  • Applying the NEPM assessment levels in WA
  • Information to include when reporting on the various stages of contaminated site assessment and management
  • Community engagement

Development of sampling and analysis progams (2001)

Community consultation (2006)

Potentially contaminating activities, industries and land uses (2004)

Assessment levels for soil, sediment and water (2010)

Bioremediation of hydrocarbon contaminated soils in Western Australia (2004)

The use of risk assessment in contaminated site assessment (2006)

Reporting on site assessments (2001)

Identification, reporting and classification of contaminated sites in Western Australia  — draft guideline released for public consultation, 17 September 2015. 

  • Identifying and reporting known or suspected contaminated sites
  • Classification of contaminated sites and action required
  • How to access information on known or suspected contaminated sites
  • Disclosure requirements during land transactions
  • Regulatory notices
  • Certificates of contamination audit
  • Transfer of responsibility for remediation.

Reporting of known and suspected contaminated sites (2006)

Site classification scheme (2006)

Certificate of contamination audit scheme (2000)

Use of monitored natural attenuation for groundwater remediation – revised guideline under development

Use of monitored natural attenuation for groundwater remediation (2004)

Contaminated sites auditors - guidelines for accreditation, conduct and reporting (2009)

Assessment, Remediation and Management of Asbestos-Contaminated Sites in Western Australia (joint publication with DoH) (2009)  
Contaminated sites and the landuse planning process – revised guideline under development

Contaminated sites and the landuse planning process (2006)