What defines a Class 3 asbestos project?

A Class 3 asbestos project is defined as activities involving the repair and maintenance of asbestos-containing materials that may disturb such materials. It typically includes work where asbestos is not necessarily removed but may be disturbed during maintenance operations. The key characteristic of Class 3 projects is that they require specific training to ensure safety protocols are followed, as workers may potentially be exposed to asbestos fibers during these activities.

This emphasis on maintenance activities requiring specific training highlights the necessity for workers to understand how to properly handle the materials to minimize health risks associated with asbestos exposure. Since these projects do not involve full removal or mitigation of asbestos but rather the maintenance of existing materials, such training is critical for worker safety and compliance with regulatory standards.

In contrast, other options touch on different types of activities that do not fit the definition of Class 3. For example, custodial activities may include routine cleaning and general maintenance which do not necessarily involve the type of specific training associated with asbestos disturbance, while research and investigations or emergency responses are classified differently based on their unique requirements and risks.