It will depend, I think, on how those unanticipated costs occurred. As I said, municipalities chose projects to be completed by the deadline based on their understanding of when they would get approval from the federal and provincial governments. When you plan a complex infrastructure project, you plan for unanticipated events. You plan for ripping up the pavement and finding something you don't quite find--
On June 15th, 2010. See this statement in context.