Court rules the Canadian government failed in its duty to consult with aboriginal people before approving the pipeline in 2014.
The oil company is still working to satisfy the 209 conditions included in its 2014 permit to build the pipeline.
First Nations, environmental groups and a labour union have launched an appeal to overturn the approval for the controversial pipeline.
Alberta premier identifies Northern Gateway and BC’s Kitimat tanker port as keys to lucrative oil export markets.
Gitxaala First Nation claims the government failed to provide reasonable accommodation and consultation over aboriginal rights.
Enbridge is still working to win over First Nations groups opposed to the $7.9 billion project.
The Opposition New Democrats did not support the motion.
Northern Gateway and other pipeline projects mean production in the Alberta oil sands could as much as triple by 2035.
Before submissions will even be considered, the public and experts must first apply to the board.