You particularly point out dredging. For dredge spoils, there are a lot of environmental regulatory requirements as to where you can dispose of them, and it adds to the cost. Habitat adds to the cost. It comes back to this $55 million annually that is required to deal with just maintaining those facilities, but there are the other costs creeping in and increasing all the time.
If you were to go back five years ago, you would see that the detail in trying to do an environmental assessment is certainly significantly greater now than it was previously. Those costs are creeping in all the time. They are a major concern and they have to be addressed. As I say, $55 million just patches up or repairs what we have, and as we're doing that, these other costs are coming on stream and they have to be addressed.