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Environmental Consultancy

Contaminated Land Assessment & Remediation

Comprehensive environmental site assessments, remediation strategy and waste management for complex brownfield and development sites across South Australia.

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Our Environmental Services

What We Deliver

Contaminated Land Assessment

Comprehensive environmental site assessments identifying and quantifying hazardous substances in soil, groundwater, soil vapour and surface water.

  • Preliminary Site Investigation (PSI)
  • Detailed Site Investigation (DSI)
  • Contamination mapping and risk evaluation
  • PFAS, hydrocarbon and DNAPL assessment
  • Groundwater monitoring and investigation
  • Soil vapour investigation and assessment

Contaminated Land Remediation

Tailored remediation strategies using both traditional and innovative technologies to resolve contamination effectively and safely.

  • Remediation feasibility assessment
  • Remediation design and implementation
  • Soil treatment and bioremediation
  • Groundwater treatment systems
  • Vapour intrusion mitigation
  • Remediation contractor management

Contaminated Land Advice

Expert contaminated land management guidance covering regulatory compliance, risk management and remediation planning.

  • Regulatory compliance strategy
  • Risk-based site management
  • Auditor and regulator liaison
  • Remediation options assessment
  • Community and stakeholder engagement
  • Conceptual site model development

Waste Management

Management of hazardous and non-hazardous waste from contaminated sites, ensuring regulatory compliance and environmentally responsible disposal.

  • Waste soil classification
  • Beneficial reuse of waste soils
  • Regulatory compliance and EPA liaison
  • Material tracking and documentation
  • Volume forecasting and reporting

Property & Project Due Diligence

Environmental risk assessments for land acquisition and development — protecting your investment before you commit.

  • Historical review and desktop assessment
  • Site inspection and sampling
  • Contamination impact on value and feasibility
  • Pre-purchase risk identification
  • Development feasibility advice
  • Regulatory and audit pathway guidance

Baseline Environmental Assessments

Establishing environmental baselines for service station portfolios, industrial sites and infrastructure projects across SA and beyond.

  • National BEA program implementation
  • Portfolio-scale assessment programs
  • Regulatory reporting and liaison
  • Ongoing monitoring programs
  • Trigger level analysis
  • Remediation trigger identification
Real Work, Real Sites
Oozing bitumen tar contamination excavation South Australia
Bitumen and tar contamination uncovered during deep excavation
LNAPL light non-aqueous phase liquid groundwater monitoring well
LNAPL (petroleum hydrocarbon) product detected in groundwater monitoring well
Groundwater remediation excavation contaminated water South Australia
In-situ groundwater remediation at a complex industrial site
Underground storage tank UST removal Adelaide South Australia
Underground storage tank (UST) removal — metropolitan Adelaide
Tight access drilling investigation industrial refinery site South Australia
Tight-access drilling investigation at an active industrial site
Case Study

Reducing Waste, Saving Cost

Trilogy helped a major development project reduce soil disposal, cost and transport impacts through practical contaminated land assessment and remediation planning.

✓

17,000+ tonnes of soil diverted from landfill

✓

1,700 truck trips eliminated — saving 136,000km of transport

✓

Approximately $10 million in project overspend avoided

✓

Significant sustainability outcomes delivered for client

Confidential Client · Metropolitan SA

Large-Scale Brownfield Remediation

A large-scale metropolitan contaminated land remediation project integrating environmental assessment, 3D site modelling, earthworks volume forecasting and community liaison.

Trilogy combined targeted investigation, remediation advice, material tracking and regulatory liaison to help the project team make practical decisions during delivery.

PSI & DSI Remediation 3D Modelling Volume Forecasting PFAS Hydrocarbons
Our Environmental Team

Senior Expertise on Every Project

Our environmental team brings together over 70 years of combined contaminated land experience — from former regulators to senior auditor-nominated consultants.

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Why Trilogy for Environmental Work?

  • Former DIT Senior Contamination Advisor on our team — deep regulatory knowledge
  • Integrated with geotechnical and drone capability for comprehensive investigations
  • 3D modelling fed directly from field data — no rework, faster to design
  • Senior technical involvement on every project, not just oversight
  • South Australian owned — we know the regulatory framework from the inside
Resources

Download Our Capability Statement & Case Studies

Environmental capability statement and case studies — ready to share with your project team.

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Ready to Discuss Your Site?

Whether you're acquiring land, managing a remediation or navigating regulatory requirements — we're ready to help.

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