(1) A reference in this section to a relevant power shall be read as a reference to a power to:
(a) inspect or examine a matter or thing;
(b) take samples of a matter or thing;
(c) examine a document;
(d) take extracts from, or make copies of, a document; or
(e) do any other act or thing necessary or convenient to be done in order to carry out a Treaty inspection.
(2) For the purposes of carrying out a Treaty inspection, a Treaty inspector may, with the consent of the occupier of any land or premises, enter upon the land, or upon or into the premises, and exercise any relevant power.
(3) For the purposes of carrying out a Treaty inspection, a Treaty inspector may, with the consent of the person in control of a vessel, aircraft or vehicle, enter the vessel, aircraft or vehicle, and exercise any relevant power.
(4) Where a warrant is issued to an inspector (in this subsection referred to as the relevant inspector ) under subsection 21(5) authorising the exercise of powers in relation to any land, premises, vessel, aircraft or vehicle for the purpose of facilitating a Treaty inspection, a Treaty inspector may accompany the relevant inspector when the relevant inspector enters upon the land or upon or into the premises, vessel, aircraft or vehicle, and may, for the purposes of carrying out the Treaty inspection, exercise any relevant power.