Environmental Site Assessments

The purpose of an Environmental Site Assessment (ESA) is to evaluate the contamination status of the target site including the distribution of contamination, both vertically and laterally, and to identify any potential onsite or offsite contamination sources.


An ESA may be required to:

  • Meet the requirements of an Environmental Audit.

  • Meet the requirements of an EPA Victoria enforced Pollution Abatement Notice (PAN) or Clean Up Notice (CUN).

  • Facilitate the construction of a childcare centre.

  • Assist in meeting council requirements.

  • Prepare a site for residential / commercial redevelopment.

  • Evaluate the environmental condition of a site prior to acquisition (pre-purchase and due diligence assessment).


An ESA may include:

  • A desktop environmental site assessment including site history and site setting information with respect to contamination potential.

  • Soil sample collection and analysis for the presence of chemical and asbestos contamination.

  • The installation and sampling of groundwater monitoring wells to evaluate groundwater quality.

  • Soil vapour assessment works where the potential exists for vapour intrusion to a current or proposed occupied areas.

  • Landfill gas assessment works for properties located in the vicinity of current or historical landfill sites.


Environmental Site Assessment (ESA) reports may also be referred to as:

  • Preliminary Environmental Site Assessments (PESA) or Preliminary Site Investigations (PSI) where a reduced scope of works is employed as either an initial evaluation of the contamination status of a site or where the site is considered a low contamination risk based on the known site history; or

  • Detailed Environmental Site Assessments (DESA) or Detailed Site Investigations (DSI) where a more comprehensive evaluation is required based on a medium to high contamination risk due to past site use.

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Detailed Site Investigation
Assessment for Environmental Audit
Environmental Audit Melbourne
EPA Victoria Remedial Notices
comprehensive environmental assessment Melbourne
Landfill Gas Assessment
landfill gas risk assessment
Soil Categorisation Assessment
Environmental site assessment
Soil & Groundwater Remediation
preliminary environmental site assessment
Soil Vapour Assessment
Environmental Consultant Melbourne
Contamination Management
Phase 1 environmental assessment
Asbestos in Soil
environmental consultant
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