My understanding is that the initial estimate of the need for groundwater for the in situ project was indeed that 0.2:1 ratio, but that some of the most recent experience would suggest that it's more in the same range as it is for the mining operations. As you pointed out earlier, the in situ bitumen, or the bitumen at the deeper levels--below, say, 75 metres--is much more extensive than the bitumen that could be mined in surface mining.
So it's putting those two things together that leads one to think that maybe this is as big a problem or a bigger problem than in the mining.