That's a complicated question. Generally speaking, except for some particular laws, the general view, which is held by the courts, is that provincial environmental laws will not apply to first nations lands unless they accept that they do or there is some strong argument that they should be applied.
That's part of the problem for first nations on reserves. Most of the first nations final agreements are in the Yukon and Northwest Territories and Nunavut. There are starting to be some in British Columbia. They kind of follow separate rules than what happens to reserves, which only have the Indian Act, which is very inadequate. For environmental protection, they have simply whatever federal law exists. In the case of environmental permits and so forth, they don't have them.
This First Nations Land Management Act, and the ability of a first nation to enact its own environmental laws, cannot be asserted unless they actually enact the land code, which is a fairly intensive process. In the meantime, they need the federal laws in place to be applied. And they need to be able to have recourse to the courts to make sure those laws are applied. They are regularly filing those kinds of actions.