Minister, could I turn to permits. The bill says that the minister may grant permits for the dumping of waste and other matter into Australian waters for a marine geoengineering activity if the minister can satisfy themselves on a range of matters. One of these matters is outlined in proposed subsection (7C)(b), which states:

… pollution of the marine environment from the placement of wastes or other matter for that activity would, as far as practicable, be prevented or reduced to a minimum …

What does 'reduced to a minimum' mean in this context? Is there a relevant standard that applies in assisting the minister to determine what threshold of pollution can be accepted in this context?