A PCBU ensures that exposure of any person at the workplace to airborne asbestos is eliminated so far as reasonably practicable, or otherwise minimised so far as reasonably practicable, and that the exposure standard for asbestos is not exceeded (except inside an enclosed, negative-pressure friable removal area under r 477).
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.