Air monitoring and clearance testing

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Coleman Consulting can perform air quality testing and monitoring for the presence of asbestos in the air – at your home or in the workplace.

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Static monitoring involves positioning monitors at fixed points in the area undergoing sampling.

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Air monitoring involves drawing air through a filter so that airborne particles are collected. The filter is then examined under a microscope and the fibre concentration is calculated.

The material analysis is carried out in compliance with Guidance Note on the Membrane Filter Method for Estimating Airborne Asbestos Fibres 2nd Ed. [NOHSC:3003(2005) by an accredited IANZ laboratory.

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Air sampling may form part of the procedure used to monitor asbestos in buildings or other structures.

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Clearance sampling has received the greatest attention but it may also be useful to perform:

• Background sampling to establish the conditions that exist before work is commenced;

• Leak testing to check the integrity of the enclosure deployed for removal or encapsulation activities; and

• Reassurance sampling - sampling after the enclosure has been removed.

• Personal exposure monitoring - Used to assess the levels of worker exposure.

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In order to achieve a site reoccupation and clearance certificate it may be necessary to carry out a visual inspection, swab testing, air-monitoring or all three depending on the type and extent of contamination. This would normally form part of a four stage process which would also include a desk-top study in order to ascertain the suitability of the methodologies used in the removal.

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All clearance testing is carried-out in compliance with the WorkSafe New Zealand Position Statement on Asbestos Clearance Procedures issued April 2016 (to be reviewed in 2018).

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Coleman Consulting implements a site set-up fee per site and a cost based on the number of monitors required. Please contact one of our management team for further information.

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