How is bulk sampling typically conducted?

Bulk sampling is typically conducted by physically collecting a sample of material suspected of containing asbestos. This process involves wiping an area with a filter material to gather soil, dust, or debris that may contain asbestos fibers. This method is crucial for accurately assessing the presence of asbestos in a material by obtaining a direct sample from a surface or the material itself.

The other methods listed involve various approaches that do not directly address bulk sampling. Collecting air samples over time focuses on the concentration of airborne fibers rather than obtaining solid material. Drilling into materials for core samples is more applicable to geological assessment rather than bulk asbestos sampling. Using vacuum systems to collect dust can assist in assessing exposure but does not gather a focused sample of larger material for laboratory analysis. Therefore, the wiping method is the most appropriate for bulk sampling in asbestos assessment.