Hon SCOTT SIMPSON (National—Coromandel): Surely, that can't be. I can't imagine a situation where, in the name of climate change and emissions reductions, there would be a need for the release of harmful substances. What kinds of harmful substances does the Minister have in mind? What possible situation could arise where that could occur? I know that the limits of science are forever expanding, but this strikes me as literally a statutory exemption to pollute, which is exactly the opposite of the intent of this piece of legislation. It seems to me to be quite illogical that on the one hand, we are trying in this bill to provide for shipping that is cleaner and greener and more environmentally friendly, and yet we have a statutory exclusion that allows for the dumping of harmful substances—toxic substances, probably—all in the name of what we're told is emissions reduction. 