There's a variety of things there.
One, within the design that we utilize for the diesel power plants, obviously, we're looking at reducing the noise as much as possible. As well, we have to look at the exhaust systems and particulates and ensure that they aren't brought in or ingested by any other building nearby. Typically, it's a struggle. We want the power plant in the community because of the ability it gives us to take heat from it and heat some buildings and reduce fossil fuel consumption, but then we're also sticking it in a community. We have the noise that's there.
Speaking as a person who is responsible for electricity, I like to hear the sound of the power plant. When I don't hear it, then I'm nervous as heck because it's 40-below and we have trouble.