Our review of documents indicates that $35 million was the amount required (after the RTA contribution) for the change orders, as best estimated at the time. We did not examine the costings of the various components as this was outside the scope of this audit. As noted previously, the Amendment Deed funds might not cover an unresolved dispute about the cost of the William and Park Streets works. This dispute has the potential to increase the cost of the changes well beyond the amount covered in the Deed.