We are working on getting clarity on that number. We have initiated case studies that are telling us the numbers are pretty good. The numbers are available through regulators who oversee any and all cleanup, even in a large incident such as the one in Michigan, outside of Canadian territory, but nonetheless a very proud and stable Canadian company, Enbridge. It's in a state of remediation, where sections of that river are progressively being cleared, and then they are approved by their EPA regulators as clean.
In the work we have looked at so far, we see that the majority of cleanup is a very high percentage after just two or three years. We want to gather more and clear evidence of that and make sure it's transparent to the public. We are still working on that now. We're not going to hide anything. We just have never, at an industry level, tried to pull those numbers together.