Whoever controls premises covered by the Act, to whatever extent, provides the ways in and out of the premises and of the plant and substances there, and takes the measures reasonable for someone in that position so that the premises stay safe and free of health risk so far as reasonably practicable; the duty attaches to whoever a contract or tenancy obliges to maintain or repair the premises or their entrances and exits, or to keep plant and substances safe. The person in control also uses the best practicable means to stop toxic or offensive substances escaping from the premises into the atmosphere and to make harmless and inoffensive whatever is emitted.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.