There's a timeline according to when a ship is built and how big it is, but starting in about 2016, a large number of ships will be installing these treatment systems. We think that will even further protect the Great Lakes beyond the reduction we've seen already.
The U.S. federal regulations are compatible with the Canadian and the international approach currently. Some of the states, through their certification of the Clean Water Act, have come out with more stringent discharge standards, so a lower number of organisms being allowed to discharge.
The problem I see with those regulations is they're below the levels of detection, these higher standards. As a scientist, I can actually test if a treatment system is meeting that standard. I can't test the treatment system to see if it can meet that standard. My opinion is the international standard, which is set at the level of detection, will give the best protection we can give currently, and once we get that in place, we can then re-evaluate and see if more is needed.