There's obviously a lot of science that goes into answering that question, and some of that comes from scientists within the government. Some of it comes from reports, such as the Council of the Royal Society report that was done a few years ago, which was actually led by a scientist from the Department of Fisheries and Oceans.
For any hydrocarbon that's spilled in a marine or an aqueous environment, the most critical issue is how quickly you get to the spill; that is, the amount—