Contaminated Soil & Water


Investigation, Management & Remediation of Soil and Groundwater Contamination

Our team of environmental experts can help you manage potential financial, regulatory and legal risks associated with soil and groundwater contamination.

We can help you evaluate whether contamination is present and identify and deliver management and remediation solutions for potential unacceptable human health and environmental risks.

Coke and Ash in Soil Profile

Years of Investigation & Remediation Services

First Dedicated "Brownfield" Consultant in Australia

EPA Accredited Environmental Auditors


Our team can assist you with Preliminary and Detailed Site Investigations (PSI and DSI), develop conceptual site models (CSM) and assess your project and site's risk to human health and the environment. EESI's contaminated soil & groundwater investigation services include:

  • Preliminary and Detailed Site Investigations (PSI and DSI)
  • Preliminary Risk Screen Assessments (PRSAs)
  • Soil and Fill Classification
  • Environmental Due Diligence
  • Environment Risk & Liability Estimates
  • Waste Classification & Hazardous Materials Surveys
  • Underground Petroleum Storage System (UPSS) Compliance
  • Hydrogeological, Vapour & Environmental Risk Modelling
  • Risk Assessment (Human Health and Ecological)
  • Conceptual Site Models
Contaminants of Potential Concern
Illustrative conceptual site model showing landfill waste related contaminant fate and transport exposure mechanisms
Groundwater testing in action

Management & Monitoring

To ensure environmental and human health on contaminated sites, during urban development projects, and long after projects have been completed, it is vital to monitor groundwater, surface water, ground materials and gases accurately and thoroughly.  Our teams provide innovative and reliable management and monitoring solutions for every project size, scale and scope.

  • Construction and Site Environmental Management Plans
  • Environmental Approvals
  • Management and Closure Plans
  • Groundwater Monitoring
  • Soil Vapour Monitoring
  • Air & Dust Monitoring
  • GIS and Data Solutions


Site remediation needs to be sustainable and commercially viable to manage potential unnaceptable risks to human health or the environment. Our contaminated soil and groundwater remediation services include:

  • Remediation Option Assessment and Design (RAP, RWS)
  • Remediation Action Plans
  • Remediation Cost Estimates
  • Underground Storage Tank Decommissioning & Removal
  • Contractor Engagement and Supervision
  • Remediation Validation
  • Material Management Plans
  • Soil Treatment
  • Groundwater Treatment
  • Remediation Validation Assessment
Excavator used to remove a disused underground storage tank

Specialised Services

How does EESI treat contaminated soil and water?

Soil Treatment

Our soil treatment solutions are designed to rehabilitate, remediate, or prepare soil for sustainable land use. The services we provide contribute to environmental conservation, land reclamation, and the promotion of sustainable agricultural practices, addressing the diverse needs of our clients with scientific expertise and pragmatic solutions.

Our soil remediation approach integrates physical, chemical and biological techniques, customised to address specific soil conditions and objectives. Physical methods such as soil aeration and compaction control are employed to enhance soil structure and water infiltration, ensuring optimal growing conditions. Chemical treatments are utilised to adjust pH levels and nutrient content, promoting healthy plant growth and productivity. Biological treatments harness the activity of microorganisms to decompose organic matter, degrade pollutants, and enhance soil fertility naturally.

EESI's soil treatment and remediation services include:

  • Bioremediation – Dynamic Biopiles™
  • Excavation and Off–Site Disposal
  • Off–Site Soil Treatment
  • Bonded Asbestos Removal
  • Acid Sulfate Soil Treatment
  • Soil Vapour Extraction
  • Chemical Oxidation, Reduction and Immobilisation
  • On–Site Repository or On–Site Containment

Groundwater Treatment

Similar to our soil treatment approach, how we go about treating groundwater involves a combination of physical, chemical, and biological treatment methods, depending on the specific characteristics of the contaminants present.

Physical methods such as filtration and air stripping are utilised to remove suspended solids and volatile compounds. Chemical treatments such as oxidation and precipitation target dissolved contaminants, including heavy metals and organic pollutants. Our biological remediations are based on natural processes of microorganisms to degrade organic compounds and neutralise contaminants, promoting groundwater remediation and rehabilitation.

Our groundwater services encompass a range of scientifically proven methods aimed at restoring and preserving groundwater quality for various applications. By Integrating advanced technologies with expert knowledge, we help you to address contamination and ensure the protection of valuable water resources.

EESI's groundwater treatment and remediation services include:

  • Enhanced In-Situ Bioremediation
  • In-Situ Chemical Oxidation and Reduction
  • Monitored Natural Attenuation
  • Hydraulic Containment
  • NAPL Recovery
  • PFAS Water Treatment and Removal

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The Environmental Earth Sciences International Group acknowledges the Traditional Custodians of country throughout Australia and their connections to land, sea and community. We pay our respect to their Elders past, present and emerging and extend that respect to all Aboriginal and Torres Strait Islander peoples today.