Which method of addressing an asbestos hazard is considered the most expensive?

The method of addressing an asbestos hazard that is considered the most expensive is removal. This process involves carefully taking out asbestos-containing materials from a building or structure, which requires specialized training, equipment, and adherence to strict regulatory standards to ensure safety and compliance with environmental health regulations. The removal process is extensive and can lead to significant labor costs, disposal fees for hazardous waste, and potential damage to the structure that may necessitate additional repairs.

In contrast, demolition might involve removing a whole structure and potentially eliminates the asbestos hazard in the process, but it often does not require the same level of handling and safety precautions as removal. Enclosure involves constructing barriers around asbestos materials to prevent fiber release, while encapsulation applies a sealant to bind asbestos fibers, both of which are typically less costly than full removal because they do not incur the same labor and disposal expenses associated with taking out the materials completely.