Ensure Safe Air Quality After Asbestos Abatement
LCS Laboratory Inc. supports asbestos abatement companies with sampling pumps, PCM cassettes, and laboratory analysis. With data from over 250 cases, we provide insights into typical fiber concentrations following asbestos removal and clearance testing.
Regulatory Framework for Asbestos Clearance Testing
In Ontario, Canada, asbestos clearance tests are required by Regulation #278/05 to confirm that air quality is safe before dismantling enclosures. Sampling must be conducted by a qualified contractor or independent consultant. Laboratory analysis follows the NIOSH 7400 protocol using Phase Contrast Microscopy (PCM).
Our clients typically collect 2,500 litres of air per sample, achieving a sensitivity of 0.001-0.002 ff/cc (fibres per cubic centimetre).
Fiber Concentration Levels After Abatement
Based on data from professional consultants and abatement companies, here are the observed fiber concentration levels:
- <0.002 ff/cc: Cleanest Sites
- 75% of tested properties showed non-detectable fiber levels (<0.002 ff/cc), representing the cleanest results achievable with this method.
- 0.002-0.005 ff/cc: Acceptable Level
- 90% of projects had fiber concentrations below 0.005 ff/cc, demonstrating results at least twice as safe as the regulatory limit of 0.010 ff/cc.
- 0.005-0.009 ff/cc: Warning Level
- 6.4% of cases showed fiber levels just below the clearance threshold (0.010 ff/cc). Although these passed legally, we recommend improving abatement techniques to avoid future non-compliance.
- >0.010 ff/cc: Non-Compliance
- 3.6% of sites exceeded the acceptable limit of 0.010 ff/cc, requiring additional cleaning and re-testing to comply with regulations.
Partner with LCS Laboratory for Reliable Testing
LCS Laboratory offers experienced and affordable laboratory support for asbestos clearance testing in Southwestern Ontario. Email us to discuss your project or order a sampling kit.
