We certainly have moved to ultra-low-sulphur diesel, which has a very stringent regulatory requirement and certainly has added to costs. Most people are aware the government has introduced greenhouse gas regulations and has also adopted long-term objectives for clean air. How that will play out, we don't know. What the cost will be is pretty uncertain, and my friends and colleagues at Environment Canada are the experts on that.
It is fairly safe to say there will be some cost entailed in those regulations.