28 The exemptions claimed are those found in clause 4(1)(b),(c) and (e) of Schedule 1. Relevantly that clause provides -
4 Documents affecting law enforcement and public safety
(1) A document is an exempt document if it contains matter the disclosure of which could reasonably be expected:
(a) …
(b) to enable the existence or identity of any confidential source of information, in relation to the enforcement or administration of the law, to be ascertained, or
(c) to endanger the life or physical safety of any person, or
(d) …
(e) to prejudice the effectiveness of any lawful method or procedure for preventing, detecting, investigating or dealing with any contravention or possible contravention of the law (including any revenue law), or
(f) …
(2) A document is not an exempt document by virtue of subclause (1):
(a) if it merely consists of:
(i) a document revealing that the scope of a law enforcement investigation has exceeded the limits imposed by law, or
(ii) a document containing a general outline of the structure of a programme adopted by an agency for dealing with any contravention or possible contravention of the law, or
(iii) a report on the degree of success achieved in any programme adopted by an agency for dealing with any contravention or possible contravention of the law, or
(iv) a report prepared in the course of a routine law enforcement inspection or investigation by an agency whose functions include that of enforcing the law (other than the criminal law), or
(v) a report on a law enforcement investigation that has already been disclosed to the person or body the subject of the investigation, and
(b) if disclosure of the document would, on balance, be in the public interest.
(3) …4
(4) In this clause, a reference to the law includes a reference to the law of the Commonwealth, the law of another State and the law of another country.