The petrochemical business actually has two centres in Canada, one in Alberta, primarily in the Joffre and the Edmonton area, and the other in Sarnia.
Probably of more concern are the Alberta facilities. As you indicated, because of the reduction in the flows on the export pipelines, the recapture or the stripping of the ethane molecules out of those streams is going to go down with those gas flows. I would suggest that this is a concern for Alberta, but the petrochemical business is actually in a position to try to recapture some of that ethane. As I indicated, some new molecules are coming on the Vantage pipeline, which will bring ethane from North Dakota into the petrochem business in Joffre.
There are several producer-led initiatives that are building deep-cut facilities in the fields and the gas plants, which will capture the ethane molecules in the field before that goes to the straddle plants. That will contribute to improving the ethane supply to the petrochem business or at least to maintaining it.
The third element is something that has been talked about but not advanced, and that's what they call streaming of the fluids. In essence, what you end up doing is sending the gas streams out to the straddle plant operations at the border locations, stripping out the ethane, propane, and butane, sending the drier gas to market, and then bringing the residual gas back into Alberta and up to Fort McMurray to feed the oil sands. That's the ethane side of the equation.
On the propane and butane side of the equation, the decline in flows is not as significant in the field operations, because we do need gas in Alberta to feed the oil sands, so there is a bit of an uptick in the demand in Alberta. As far as the C5 components go, again, that's a field operation, and we don't see significant loss of volume there, because the field plants are being enhanced and stuff like that.
One other thing is that our drilling programs are basically moving to the wetter resources, so today we are actually producing gas that has more liquids in it than it did five years ago. The liquids can be recovered even though the gas streams are falling off.