Slide 16 does say C $ 3.25 but the FS sensitivity studies and Dec 21 , 2012 press release use US $ 3.25/lb as the base case. Slide 15 implies about a $ 2.5 billion improvement in NPV unless there is a mistake. There would still be about a $ 1 billion improvement in estimated NPV using the US $ base case but the the slides should be rechecked by CUU to confirm which case applies.