In which situation may it be difficult to keep asbestos wet?

The situation in which it may be difficult to keep asbestos wet is when asbestos is encapsulated. Encapsulation involves applying a sealing material that protects asbestos from releasing fibers into the air. When asbestos is encapsulated, it is covered in a way that prevents moisture from reaching the fibers effectively. This makes it challenging to maintain a wet condition, which is often important for minimizing dust and fiber release during handling.

In contrast, raw asbestos, when actively being handled, can be maintained in a wet state to suppress dust. Asbestos that is bagged should also retain moisture, and during disposal, although precautions are critical, the process can typically include methods to keep the material wet to minimize airborne fibers. Thus, encapsulated asbestos presents unique challenges in maintaining a wet condition due to its protective covering, making this the most appropriate scenario for the question asked.