Yes, it's quite possible, because the project variable hasn't stayed constant. They've learned more about some of the worst sites, and so the cost for those essentially made the project bigger than they had anticipated; and the number of sites has increased quite a lot since we first started auditing this in the nineties and 2000s.
It's not entirely bad news that the liability has gone up for certain aspects, because it's a reflection of better knowledge of the project, as opposed to the project staying constant—if you know what I mean.