Matt Carthy (Cavan-Monaghan, Sinn Fein) | Oireachtas source

I have asked that question in about three different ways and Mr. Tierney has not answered it. The reason I ask is that we are in a new situation, one that was not envisaged last year when this committee and the general public were exercised by the potential cost overrun of this. We now have building inflation that by all accounts will exceed 4%, possibly by a substantial amount. I listened to the earlier exchange and I want to get an understanding of the premise on which that inflation figure will be calculated. As I understand it, three metrics are used. Maybe Mr. Gunning can elaborate on how they are decided and how they will be attributed to the costs that will be awarded to BAM in respect of inflation.