When you talk about environmental performance, there are a couple of places where we do meet what I would think are probably some of the best standards in the world. One is on emissions from the sites. You know, NOx, SOx, and volatile organic compounds. They're highly regulated. We're very much in compliance. Today there is ongoing work with Environment Canada to move forward on quality standards for air coming out of our refineries. We work very closely with Environment Canada to put in place a framework that meets the needs of industry as well as Canadians.
One of the points I would like to raise this morning is that we are looking for the kind of flexibility that says: here are your air quality standards for that site; go meet them. It's an outcome-based approach, as opposed to an approach where we go in and have dictated to us exactly how each piece of equipment needs to operate in the plant. So we're really advocating for an approach in which you tell us what you need around the facility in terms of air quality, and we'll go out and meet that standard. We'll figure out how, inside the plant, we can best do that. That's one.
From an air quality perspective, I think we're in a frame that's among the best in the world, if not the best in the world. I don't know that for certain, but I'm sure the Canadian government is very interested in making sure all industries are in that kind of framework.
The second one is on greenhouse gas. Again, there is lots of work ongoing on greenhouse gas, as you know, with governments today. We would really like a policy framework in this country that wasn't patchwork and that wasn't province by province. In fact, if the biggest bang for the buck on greenhouse gas is at site A, then we can do it at site A, and not have to do the same thing at every single site necessarily. We'd like a nice harmonized policy approach to some of these things.
Our biggest move on greenhouse gas in our refineries is for energy efficiency, and we work hard at that. There are rewards for us, obviously, in energy efficiency, and that's something we're very committed to.