Environment Protection Act 1997

The authorised officer may—

for the purposes of taking emergency action, enter any premises (other than residential premises) at any time of the day or night—

without a warrant; and

with the assistance, and by the force, that is necessary and reasonable; and

in the course of taking emergency action, exercise any of the powers listed in section 100.

An authorised officer who enters premises under subsection (1) (a) is not authorised to remain on the premises if, on request by the occupier or a person apparently in charge of the premises, the officer does not produce the officer’s identity card.