wichita.edu
… of becoming or has become crumbled, pulverized, or reduced to powder by the forces expected to act on the material in the course of demolition or renovation operations. Regulated Area --- Is an area established by the employer to demarcate areas where airborne concentrations of asbestos exceed, or there is a reasonable possibility they may exceed, the…
https://www.wichita.edu/services/environmental_health_and_safety/asbestos_safety.php