In London and in Ottawa we have a state-of-the-art odour abatement system that includes a wide variety of technologies. First of all, the whole process is managed inside an enclosed facility that is under negative air pressure. So if you were at one of our doors, you'd actually have to give it a little extra tug to get it open, because everything is being sucked in.
The odour is being sucked in through a series of biofilters, bio-scrubbers, and ammonia scrubbers that remove all of the noxious odours. The odour that is emitted is really a rest odour that comes off of our biofilters, which is like a wet hardwood. Some people describe it as a walk in the woods after a rain. Other people think it smells like potato water. It's very light, very fleeting. Of course, then it goes up through a 40-metre stack and is dispersed.