What does bulk sampling in asbestos inspection involve?

Bulk sampling in asbestos inspection specifically involves taking samples of suspected materials for lab analysis. This process is critical because it enables inspectors to determine the presence and concentration of asbestos in building materials, which is essential for assessing health risks and planning remediation actions if necessary.

When bulk samples are collected from materials like insulation, floor tiles, or roofing, they are sent to accredited laboratories where the samples undergo microscopic analysis. The results help in making informed decisions regarding safety measures and compliance with regulations related to asbestos management.

The other options, such as reviewing historical data, inspecting the exterior, or measuring air quality, do not involve the physical sampling of materials. While these activities are relevant to an overall asbestos inspection strategy, they serve different purposes and do not provide definitive evidence of asbestos presence in building materials like bulk sampling does.