Air quality and clearance testing in Surrey is independent air sampling conducted after asbestos removal to confirm that airborne fibre levels in the work area are within safe limits before containment is removed. It's the final verification step that tells you — in writing — that the asbestos has been properly removed and the space is safe to re-occupy, renovate and hand to your contractor. Without clearance testing, removal is an incomplete job. With it, you have documented proof that the work was done right.
Clearance testing is the step that makes asbestos removal verifiable rather than just declared. When a removal crew finishes their work, breaks down containment and tells you the job is done, you're taking their word for it. When independent clearance air sampling is conducted — by a separate party not involved in the removal — and the lab results confirm that fibre levels are below the safe occupancy threshold, you have proof. Written, dated, signed proof that the removal was complete and effective. That document protects you in every scenario: renovation handover, property sale, insurance claim, regulatory inquiry.
The clearance testing process begins while the containment is still fully intact and the work area is sealed. Air sampling equipment is set up inside the contained area and air is drawn through collection cassettes at a measured flow rate. The cassettes capture any residual fibres that are still present in the air. Those cassettes go to an accredited analytical laboratory where a fibre count is conducted under phase contrast microscopy (PCM). Results are compared against WorkSafeBC's clearance criteria. If fibre levels are within the accepted threshold, clearance is granted. If they're above, re-cleaning is required and another sample is taken.
We conduct clearance testing independently — meaning the same crew that did the removal doesn't sign off on its own work. Independence matters because clearance testing is only meaningful if there's no conflict of interest. An abatement contractor issuing their own clearance is like a surgeon writing their own surgical outcomes report. We provide truly independent clearance so you can rely on the result, share it with third parties and use it to make decisions.
Clearance documentation carries real-world value in several contexts. For renovation projects, it's the green light for your contractor to re-enter the space and continue work. For property transactions, it's a documented record of completed asbestos abatement that satisfies purchasers and lenders. For WorkSafeBC compliance, it's the record that demonstrates the job met regulatory standards. For your own peace of mind, it's the piece of paper that tells you your family is safe to move back into the room.
We offer clearance testing as a standalone service for homeowners who have already had removal done by another contractor and want independent verification. We also pair it seamlessly with our own removal work as a standard end-of-project deliverable. Either way, you get a fast turnaround, a clear written report, and a complete record for your property file.
What's included
- Independent air sampling inside the contained work area
- Accredited laboratory analysis (PCM fibre count method)
- Comparison against WorkSafeBC clearance criteria
- Written clearance report with sampling details and results
- Visual inspection of the work area before sampling
- Sign-off before containment is permitted to come down
- Records suitable for property files, contractors and permit offices
- Re-sampling if initial results require re-cleaning
When you need this service
After any asbestos removal project
Clearance testing is the final step of any properly completed asbestos abatement job. It confirms the removal was effective, and without it, the job isn't technically finished.
Before re-occupying a space
Don't allow your family, tenants or workers back into a space that has had asbestos removal until independent clearance air sampling confirms it's safe. The sampling takes a few hours and the result is worth having.
Before your renovation contractor re-enters
Your contractor needs confirmation that the space is safe before they bring workers back in. A clearance certificate is the professional standard documentation that enables the handover.
For property files, resale and due diligence
A dated, signed clearance certificate from an accredited tester is valuable documentation for any future property transaction. It demonstrates that asbestos removal was completed properly and verified independently.
How we handle it
- 1
On-site assessment & sampling
We come out, look at the material, and take samples of anything we suspect contains asbestos.
- 2
Accredited lab testing
Samples go to a certified lab. You get a clear answer on what is and isn't asbestos before any removal happens.
- 3
Sealed containment & removal
We build proper containment, run HEPA-filtered negative air, and remove the material without spreading fibres.
- 4
Safe disposal
Everything is double-bagged, sealed and hauled to a certified disposal facility with full documentation.
- 5
Clearance testing
Independent air testing confirms the space is clean, and you get written clearance so you can renovate with confidence.
Why choose Surrey Asbestos Pros for air quality & clearance testing
- Truly independent testing with no conflict of interest
- Accredited analytical laboratory with documented chain of custody
- Fast turnaround so your project isn't held up
- Clear written report that meets WorkSafeBC requirements
- Available as a standalone service or paired with our removal work
- Local, responsive service in Surrey and the Lower Mainland
Where we work
We provide air quality & clearance testing across all of Surrey and the Lower Mainland. See all areas we serve →
Related services
Surrey Asbestos Pros — licensed asbestos testing & removal across Surrey and the Lower Mainland.
FAQ
Air Quality & Clearance Testing FAQs
Do I need clearance testing after removal?
For most jobs, yes. Independent air clearance testing confirms the space is safe to re-occupy and gives you written proof for your records, your contractor or a future buyer. We arrange this as part of the job.
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