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Asbestos contamination isn’t always obvious at first glance. While some fragments may be visible on the surface, contamination risks can exist well below ground level.
West Soil & Water conducts comprehensive investigations for asbestos containing material in soil and air. Our surveys reveal the extent and type of contamination and any risk of airborne fibres releasing during disturbance. Results can be used to plan future remediation, protect occupant health and meet regulatory obligations.
In this article, we outline why soil and air sampling are two of the most important tools WSW consultants have in detecting asbestos contamination. For more information, speak directly with our team.
Visual inspection alone can never reliably identify asbestos. It’s often present in small, fragmented forms that are difficult to spot without any objective testing. Our consultants use NATA accredited laboratories to conduct soil and air sampling, allowing them to:
Confirm whether asbestos is present
Determine whether it is friable or non-friable
Assess the likelihood of fibre release during works
Provide evidence to support remediation or management decisions
Soil sampling is a popular strategy when contamination is suspected in fill material, waste deposits or areas impacted by previous demolitions. It’s also common on brownfield sites.
WSW consultants will often sample for asbestos containing materials as part of a wider Preliminary or Detailed Site Investigation, providing a holistic picture of contamination on your site.
We create tailored, data based sampling plans that address site history, observed conditions and your intended land use. Samples will be collected from surface and subsurface soil using controlled methods that avoid fibre release.
To ensure an accurate reflection of potential asbestos contamination in soil, our team consider:
Sampling depth and spacing
Targeting areas of visible debris or historical disturbance
Managing dust and worker exposure during sampling
Samples are analysed in NATA accredited laboratories using recognised methods such as AS 4964. This testing will confirm the presence, type and extent of asbestos fibres on your site.
Our team use results to provide guidance as to whether remediation, containment or management would best address any asbestos in soil.
Asbestos fibres poses their greatest health risk when inhaled, so it is critical to detect any that may be airborne. Whilst soil sampling may identify the source of contamination, air sampling assesses what site conditions cause them to become suspended.
Airborne monitoring is essential in:
Demolition or excavation works
Asbestos removal or remediation activities
Situations where friable asbestos may be present
WSW consultants are experienced in various air monitoring techniques. Depending on the scenario and the nature of the site, they may opt for:
Background monitoring to establish baseline levels
Control monitoring during works to ensure exposure limits are not exceeded
Clearance monitoring following remediation to confirm the site is safe for re-occupation
All samples are collected using specialised pumps placed in strategic, predetermined locations.
Similar to soil samples, we analyse fibre concentration in air at NATA accredited laboratories and use results to guide further action.
Soil and air sampling are complementary. As mentioned above, soil testing will identify where asbestos is located and air monitoring will confirm whether fibres have been released into the environment.
Combining these efforts, WSW consultants can:
Assess actual (not hypothetical) exposure risk
Tailor remediation strategies to site specific conditions
Avoid unnecessary removal where asbestos is present but stable and non-friable
With an integrated approach, we can ensure proportionate and evidence based remediation action.
At West Soil & Water, our consultants design asbestos sampling programs to address the individual risk profile and intended use of each site. Our consultants:
Develop targeted soil and air sampling plans
Use safe, controlled field methods to minimise exposure
Engage NATA accredited laboratories for analysis
Translate results into clear, practical advice for clients and regulators
We also partner with commercial asbestos removal specialists to address contamination in roofing, walls and other structures.
Soil and air sampling are critical in detecting asbestos and mitigating its dangers. By confirming the presence of asbestos on your site and any potential for fibre release, you position yourself to protect health, maintain compliance and plan effective remediation.
For clarity on asbestos contamination on your site, contact WSW to discuss your requirements.