Post-abatement clearance testing is the final, independent verification step that confirms abatement work was completed successfully and the affected area is safe to re-occupy. Swift Remediation & Contracting provides certified clearance testing accepted by Alberta OHS, property managers, insurers, and regulatory bodies — giving property owners and tenants documented proof that their environment meets safe air quality standards.
Independent Clearance — Not the Abatement Contractor
Clearance testing should always be performed by a party independent from the abatement contractor. Our team provides objective, third-party clearance testing with no conflict of interest — your assurance that the results are unbiased.
Visual Clearance Inspection
Detailed visual inspection of containment zones and work areas to confirm no visible residue remains.
Air Fibre / Spore Sampling
Post-abatement air sampling analyzed at accredited laboratories to confirm levels are below threshold.
Clearance Reports
Certified documentation with lab results, chain of custody records, and a written clearance determination.
OHS & Insurer Accepted
Reports formatted to meet Alberta OHS requirements and accepted by property insurers and legal counsel.
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What Is Post-Abatement Clearance Testing?
Clearance testing is the final quality-assurance step performed after asbestos abatement, mould remediation, or other hazmat removal work. Once the abatement contractor has completed their work and cleaned the containment zone, an independent hygienist or testing firm performs a thorough visual inspection followed by air sampling to verify that airborne contaminant levels are below regulatory thresholds. Only when the clearance criteria are met can containment barriers be removed and the area returned to normal use.
Asbestos Abatement Clearance
Post-asbestos-abatement clearance follows a defined protocol under Alberta OHS regulations. The work area must pass a rigorous visual inspection — no visible fibres, dust, or debris may be present on any surfaces — before air sampling is performed. Air samples are collected and analyzed by phase contrast microscopy (PCM) or transmission electron microscopy (TEM). Fibre concentrations must fall below the regulatory clearance level before the containment can be dismantled. Our written clearance report documents all findings and confirms the area is safe for re-occupancy.
Mould Remediation Clearance
Following mould remediation, clearance testing confirms that mould spore concentrations have returned to normal background levels. We perform a detailed visual inspection for visible mould growth, moisture staining, and material condition, followed by air and/or surface sampling analyzed at accredited laboratories. Indoor spore counts are compared to outdoor baseline samples — clearance is granted when indoor levels are consistent with or below outdoor concentrations and no elevated species of concern are identified.
The Clearance Process
Our clearance process begins with a pre-sampling visual inspection of the containment zone and adjacent areas. If any visual deficiencies are found, the abatement contractor is notified for corrective action before sampling proceeds. Once the visual inspection passes, calibrated air pumps are positioned throughout the work area and run for the appropriate sampling duration. Cassettes are submitted to the accredited laboratory with a chain of custody form, and results are typically returned within 24–48 hours. We then prepare and issue the clearance report with our professional determination.
Who Needs a Clearance Report?
Property owners selling or re-leasing a building after remediation, insurance companies documenting completed claims, property managers certifying re-occupancy for tenants, and contractors required to demonstrate OHS compliance all require independent clearance documentation. Clearance reports also protect property owners from future liability by creating an auditable record that work was completed to regulatory standards at a specific point in time.