4. Scottish Natural Heritage, the Health and Safety Executive and SEPA where the development—
(a)involves the siting of new establishments;
(b)consists of modifications to existing establishments which could have significant repercussions on major accident hazards; or
(c)includes transport links, locations frequented by the public and residential areas in the vicinity of existing establishments, where the siting of development is such as to increase the risk or consequences of a major accident.