6.72. The need for ongoing institutional control at sites at which large volumes of waste containing naturally occurring radionuclides are disposed of should not be used as an argument to accept the need for such ongoing institutional control at those disposal facilities for low level waste for which practicable options exist to avoid this by definition of suitable waste acceptance criteria. Reference [2] also stipulates the requirement that safety is not to rely on ongoing institutional control. Therefore, at least for new facilities, disposal options are limited to those that do not require ongoing institutional control.