There is definitely no such statute. I think a lot of environmental lawyers are surprised the government hasn't taken legal action yet.The cleanup will have to be split between the city, province and feds I'm sure. Domtar owns the company that did all the creosote I believe, but I'm sure there is some statute that protects them from liability and the massive costs of cleanup.
It'd be nice if they did something different with the space, canals would be nice. They could be utilized for skating or maybe pond hockey in the winter with a nice street level promenade or something. But nothing will be done with that space until the city decides to clean up the creosote that leaked into the ground.
If I recall correctly, going after Domtar may not be worth the cost as it has no assets in Alberta. A judgement from an Alberta court would be difficult to enforce in Quebec.There is definitely no such statute. I think a lot of environmental lawyers are surprised the government hasn't taken legal action yet.