Yep. Check the following layouts:
White marks the spot
Colorful version
Also read this article that was linked by timklip in another thread.
More likely because the apartments are cheap(er) yet conveniently located. I read an article that said that prices were said to be 6000 per sqf but apartments were actually sold as low as 4700, causing them to snapped up almost immediately.Hmm..now I know. I was always under the impression that people move to those areas for cleaner air...!