In what scenario might Category 2 nonfriable ACM be classified as RACM?

Category 2 nonfriable asbestos-containing material (ACM) can be classified as regulated asbestos-containing material (RACM) if it can be easily crumbled or reduced to a powder during routine operations. This scenario is crucial because the potential for asbestos fibers to be released into the air increases significantly when the material can be disturbed or broken apart.

When Category 2 nonfriable ACM is in good condition and undisturbed, as referenced in other choices, it does not pose an immediate health risk and therefore typically does not meet criteria for RACM. Similarly, whether it is located in a non-occupied space or is visually undetectable does not inherently affect its classification as RACM; the key factor is the ability of the material to become airborne due to disturbance.

Thus, the correct answer emphasizes the importance of the condition of the material and the likelihood of it releasing asbestos fibers, which is why it is categorized as RACM when it crumbles easily during operations.