The steam plants are responsible for more carbon dioxide emissions and more greenhouse gas emissions than the mines. That's absolutely true. There is also a very broad range of emissions from different operations. To give you an example, in the North Sea, industry produces an average of around 10 kilograms per barrel of oil produced. In the tar sands steam plant operations, carbon dioxide emissions vary anywhere from 20 kilograms per barrel to 420 kilograms per barrel, so there's an extreme range. In terms of the emissions coming from the steam plants, there are also lots of questions about the transparency of reporting.
Yes, it is an issue. There are a lot of emissions coming from the steam plants, and many more than come from the actual mining operations.
The question, then, is whether we can use carbon capture and storage to capture some of these emissions. I think there are a number of critical issues here. First, are the carbon streams from these steam plants pure enough to capture? I don't think they are. I think they would have to be cleaned up, and that would cost more energy and more money. Second, are the volumes of emissions coming from these plants enough to warrant the economic costs of carbon capture and storage? I think that's a really big economic question that the industry is asking many questions about.
The federal government has admitted that carbon capture and storage is probably not an appropriate technology for the tar sands, in particular for the steam plants, because they are so diverse and spread over such a large area. Many of the operations produce 50,000, 70,000, or 80,000 barrels a day, and that is probably not appropriate or amenable to carbon capture and storage. That's the truth of the matter.