Well, essentially virtually none are produced from the point of view that the methane is produced when material decays over a long period of time. We use an in-vessel composting technology as well. It's in vessel for approximately five to ten days, depending on what the feedstock is. As a result of that, we're not creating methane gas.
One thing we do capture and we want to capture is the ammonia we get from this waste. Our ammonia scrubbers remove that, and we produce a by-product called ammonium sulphate. That originally was material we would actually pay to have disposed. We've now received Canadian Food Inspection Agency certification for that and we sell that back to the agricultural community so they can put it onto their fields. So we're quite comfortable with the methodology we have.