Well, we know what the fuel costs were going to be at that time, and certainly everybody was bearing the same fuel cost risk. But on the basis of all of the terms of the increase in the contract, of which there were five, it was a $15 million difference.
Evidence of meeting #25 for Transport, Infrastructure and Communities in the 40th Parliament, 2nd Session. (The original version is on Parliament’s site, as are the minutes.) The winning word was post.
A recording is available from Parliament.