Any LWTS, its pipes included, must be (a) monitored for effectiveness every month and (b) given a yearly inspection by a competent person. Where maintenance or calibration is needed to keep it effective and keep GMOs contained, it must be done as soon as reasonably practicable. The guideline notes that C68 requires the inspection, monitoring, maintenance and calibration records.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.