I want to return to a question that my colleague MP McPherson asked you, and we didn't get an answer. I think there could be a range of answers. I've looked on your website, by the way, and you said that we could find a concentration of chemical contaminants below ground on your website. Certainly, if it's there, it's not easy to find.
I want to ask now, of any of the witnesses from Imperial, what are the concentrations of toxic contaminants below ground now? You can use a range for arsenic, for naphthenic acids and for polyaromatic hydrocarbons. We know that they exceeded guidelines. What would be the range that you found in recent water sampling for those three substances?