Works carried out on the tunnelling site for or associated with the construction, maintenance and operation of a tunnel beneath Sydney Harbour.
The location and establishment of new services and the re-location and re-establishment of existing services rendered necessary by the carrying out of the works referred to in item 1 of this Schedule.
Such works for the protection of the environment as the Commissioner may consider desirable or necessary as a consequence of the carrying out of any of the works referred to in item 1 of this Schedule.
Works the use of which is ancillary or incidental to any of the works referred to in the other items of this Schedule.