What is a mandatory action when conducting asbestos building surveys?

Conducting asbestos building surveys requires a systematic approach to ensure safety and compliance with regulations. A critical step in this process is assuring laboratory analysis of collected samples. This action is mandatory because it provides scientifically reliable results regarding the presence and type of asbestos in materials. Without laboratory analysis, surveyors cannot confirm the presence of asbestos, which is essential for assessing the risk and determining appropriate management strategies.

Laboratory analysis allows for the identification of asbestos fibers and quantitative assessment, ensuring that any potential hazards are accurately assessed and managed. This action also supports compliance with regulations, which often require that any sampling conducted as part of an asbestos survey be analyzed in a laboratory.

The other options, though relevant to the surveying process, do not fulfill the mandatory requirement to establish the presence of asbestos definitively. Relying solely on visual inspections can miss hidden asbestos, sampling materials regardless of their condition could lead to unnecessary disturbance, and relying purely on historical data can be misleading if actual conditions have changed. Therefore, laboratory analysis is the crucial step that validates the findings of an asbestos survey.