Building over landfills?

[Stang]

I was having a discussion with some friends about landfills (because that's apparently great idle chit chat), particularly the Spyhill landfill, and it was suggested that some residential areas have been built over what used to be the landfill.

Does anyone know or remember if this is actually the case? I remember, probably 20 years ago, driving up Nose Hill Drive from the Crowfoot area and eventually ended up at the dump. I just can't remember how far up the road it was.

Someone suggested that Arbour Lake and Citadel are all on former landfill land, and someone else said that's impossible. Anyone know for sure?