(1)  Information is exempt information if its disclosure under this Act would, or would be reasonably likely to –

(a) endanger the security of the Commonwealth or any State or Territory; or

(b) endanger the defence of the Commonwealth; or

(c) adversely affect the international relations of the Commonwealth; or

(d) divulge information about the location of a dangerous substance or dangerous goods.

(2)  In this section –

dangerous substance is a substance that has the potential to cause harm to persons, property or the environment because of one or more of the following:

(a) the chemical properties of the substance;

(b) the physical properties of the substance;

(c) the biological properties of the substance.