Where ¾

(a) wastes or other matter are or is, or a vessel, aircraft or platform is, dumped into coastal waters; and

(b) the Minister considers that that dumping is likely to ¾

(i) cause an obstruction, or constitute a danger, to vessels;

(ii) result in harm to human or marine life; or

(iii) result in interference with the exercise of the sovereign rights of Australia as a coastal State to explore and exploit the natural resources of the sea-bed and subsoil lying beneath Australian waters,

the Minister may cause to be taken such steps as he thinks proper to repair or remedy any condition, or to mitigate any damage, arising from that dumping.