Protection of the Environment Operations Act 1997 No 156
175 Circumstances in which mandatory environmental audit can be imposed
Conditions requiring the undertaking of a mandatory environmental audit may only be imposed if:
(a) the appropriate regulatory authority reasonably suspects:
(i) that the holder of the licence has on one or more occasions contravened this Act, the regulations or the conditions of the licence, and
(ii) that the contravention or contraventions have caused, are causing or are likely to cause, harm to the environment, or
(b) the appropriate regulatory authority reasonably suspects that an activity has been or is being carried out by the holder of the licence in an environmentally unsatisfactory manner (within the meaning of section 95).