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When working on contaminated land, there is one key principle that every developer must understand: no two sites are identical. Every project carries its own set of challenges and the risks they present will depend on a combination of factors. Between previous land use, location and intended development, there are countless variations that could rear their head.
At West Soil & Water, we recognise and manage these site-specific risks to deliver remediation services tailored to each individual client. As far as we see it, this is the only way you can ensure regulatory compliance and project viability.
In this article, we explore what site-specific risk means, why it matters and how West Soil & Water develops targeted strategies to reduce long-term liabilities.
The term ‘site-specific risk’ refers to the unique environmental and human health hazards associated with a particular parcel of land. These risks can be shaped by:
Historic land use (like former industrial, mining or fuel storage sites).
The types of contaminants present (such as asbestos, hydrocarbons, PFAS and heavy metals).
Possible exposure pathways (how the contaminants might affect soil, groundwater, air or surface water).
The site’s proximity to sensitive receptors (such as schools, residential areas or natural waterways)
Rather than applying generic solutions, a well-planned and effective remediation strategy will target the actual risks of a particular site. Understanding these variables is the first step in creating such a plan.
Western Australia has a diverse mix of industrial and urban environments and with that comes a diverse mix of contamination legacies. From Perth’s inner suburbs to regional mining towns, you may find:
Former service stations that pose hydrocarbon and solvent risks.
Industrial lots containing asbestos, lead or chemical residues.
Mining-related brownfields with acid sulfate soils and heavy metals.
The Contaminated Sites Act 2003 requires these risks to be assessed and appropriately managed. In many cases, this will require contaminated land remediation services to ensure redevelopment does not endanger human or environmental health.
Effective remediation begins with thorough site investigations, including:
Phase I Environmental Site Assessments (ESA): Historical records and visual inspections to flag potential risks.
Phase II ESAs: Soil, groundwater and material sampling to confirm and quantify contamination.
Human health and ecological risk assessments: Evaluating how identified contaminants could affect people or ecosystems under current or proposed land uses.
These assessments inform decision-making and ensure remediation strategies are proportionate and defensible.
At West Soil & Water, our consultants have over a decade of experience in creating remediation plans tailored to site-specific risk. They are designed to manage WA’s environmental and regulatory complexities in a cost-effective way.
Some of the approaches we provide include:
Excavation and disposal for sites with heavily contaminated soils.
Onsite treatment where mass disposal is unnecessary.
Groundwater remediation to protect underlying aquifers from ongoing pollutant migration.
Containment and capping in situations where full removal is not feasible.
Asbestos Management including proper removal, monitoring and disposal.
We conduct contaminated land and soil testing to match these methods to site-specific risk. With the knowledge that contamination has been properly addressed, redevelopment can then proceed with confidence.
At WSW, our remediation services go beyond treatment methods. To ensure safety and compliance on your site, we also offer:
Contaminated land and soil testing, including site investigations and risk assessments.
Guidance through regulatory approvals under WA’s Contaminated Sites framework.
Long-term monitoring and advisory services to manage residual risks.
Site-specific risk is at the core of any contaminated land remediation project in Western Australia. At West Soil & Water, we carefully assess past land uses, contaminants and exposure pathways to develop targeted treatment strategies that protect health, support redevelopment and satisfy regulations.
Whether your project is in Perth or the regions, understanding and addressing these risks is key to success. To learn more about how tailored risk management can streamline your project, please contact West Soil & Water.