According to OSHA regulations, who is responsible for classifying soil?

The correct response identifies the "competent person" as the one responsible for classifying soil according to OSHA regulations. A competent person is defined by OSHA as someone who has the necessary knowledge, training, and experience to identify existing and predictable hazards related to specific tasks or work environments, and who has the authority to take corrective action when necessary.

In the context of soil classification, this person must be well-versed in understanding soil types, their properties, and how they impact safety for excavation and construction activities. This classification is critical in ensuring that proper precautions are taken to prevent collapses and other hazards associated with excavation work.

Other roles such as site supervisors or project managers may be involved in overseeing the work on-site, but it is the competent person who holds the specific responsibility and expertise necessary for identifying and classifying soil. OSHA inspectors hold an enforcement role and evaluate compliance but do not classify soil themselves.