B
-- a lot of that is, uh, tied up with the oxides or nitrogen although some of the kind of bluish gray stuff we see sometimes is tied up with particulates. But, uh, the, one of the major problems that Dallas has is oxides and nitrogen. That's because of all the equipment that's being operated. But at the same time, uh, because we don't have, we don't burn a lot of coal and solid materials we,
B
don't get a lot of particulates. Now particulates would come from trash burning or incineration or something like that here in Dallas.
A
Right.
B
Uh, power plants since,
B
many of our local power plants, uh, are natural gas most of the time, uh, the things that come off of those plants are carbon dioxide, and N O X. There's no particulates in natural gas, of course. And we pick up a little bit of sulphur off some of these products. We're burning fuel oil and a few other things, but gasoline, of course, now the lead's out, at least theoretically, uh, I guess you could say we're picking up some sulphur because a lot of the fuels does have sulphur. That's why we get that rotten egg smell sometime off the catalytic converter --
A
Oh, really?