Asbestos on construction sites is one of the few materials that triggers its own regulatory framework: separate from general hazardous waste rules, separate from standard site environmental requirements, and carrying significantly higher consequences for non-compliance. If your project involves any work on structures built before modern construction standards took hold, asbestos is a risk you need to plan for before work starts.
This post covers the environmental obligations that apply when asbestos-containing materials (ACMs) are present or suspected on a construction site.
Assume It’s There Until You Can Prove Otherwise
The starting point for any renovation, refurbishment, or demolition project on an older building is an asbestos survey conducted by a qualified assessor. Many jurisdictions require this by law before any disturbance work begins. Even where it isn’t mandated, proceeding without one exposes you to significant liability if ACMs are disturbed unexpectedly during works.
Asbestos was used widely in building materials through much of the twentieth century. And it isn’t always visually identifiable. Without a survey, your team can’t know what they’re working with, and “we didn’t know it was there” is not a defence that holds up well when an incident occurs.
The survey report becomes a live working document for your project. It should be on site, accessible to all relevant workers and subcontractors, and updated if conditions change.
Disturbance and Removal Obligations of Asbestos on Construction Sites
Your obligations shift depending on whether ACMs are being left in place, disturbed incidentally, or deliberately removed.
Where ACMs are identified but don’t need to be disturbed, the obligation is typically to manage them in place: protect, label, and monitor. This needs to be documented and communicated to anyone working near those materials.
Where ACMs must be removed, or where works risk disturbing them, licensed removal is required in most jurisdictions for anything beyond minor limits. Licensed asbestos removalists work under controlled conditions: this isn’t work that can be delegated to a general labourer or absorbed into a subcontractor’s scope without explicit qualification and licensing.
As the principal contractor, your obligation is to ensure that whoever carries out asbestos removal on your site holds the appropriate licence and operates to the required standard. Verify the licence before work begins. Keep a copy on file.
Waste Handling and Disposal
Asbestos waste is among the most tightly regulated waste streams in construction. The requirements are broadly consistent across jurisdictions, even where the specific rules differ:
Containment at source. ACMs must be wetted where practicable to suppress fibres, then double-bagged or wrapped in heavy-duty plastic sheeting before leaving the work area. Bags and wrapping must be sealed and clearly labelled as asbestos waste.
Dedicated transport. Asbestos waste must be transported by a licensed operator. It cannot be mixed with general site waste, placed in a standard skip, or informally disposed of. The transport documentation – typically a consignment note – travels with the load and must be signed at both ends.
Licensed disposal facilities. Asbestos waste must go to a facility specifically licensed to accept it. Confirm the facility’s licence before engaging. Retain the disposal receipt and file it against your waste register for the project.
All of this documentation, such as survey reports, removal contractor licence details, consignment notes, and disposal receipts, should be held together and retained well beyond project completion. These are the records that demonstrate your compliance if a regulatory inquiry arises, sometimes years after handover.
The Contractor Obligation Point
Environmental liability for asbestos doesn’t sit only with the removalist. As principal contractor, you have a duty to ensure that your systems, including your site plan, your subcontractor briefings, and your documentation requirements, address asbestos adequately. If a subcontractor disturbs or disposes of asbestos improperly on your watch, the site principal is typically within reach of the regulatory consequences.
Build asbestos obligations explicitly into your subcontractor agreements. Brief all site workers on where ACMs are located and what the protocols are. Don’t assume that because someone else is doing the removal work, your compliance exposure ends there.
The ORDUM Construction Resource Hub has environmental compliance templates and guides for construction site teams and project managers.
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