The City of Vancouver is the latest to file an application for judicial review over the National Energy Board's recommendation that the federal government approve the Trans Mountain pipeline expansion.
The Squamish Nation and a pair of environmental groups filed their own applications in the Federal Court of Appeal last week.
The city says in its court application that the recommendation to approve the expansion of the oil pipeline is both invalid and unlawful.
Vancouver Mayor Gregor Robertson says the National Energy Board failed to properly and thoroughly consult local communities on the pipeline and tanker route.
He says the board ignored key pieces of scientific evidence showing the potential for real and catastrophic damage to local waters in the event of an oil spill.
Kinder Morgan Canada wants to triple the capacity of its Trans Mountain pipeline, which runs from oilsands near Edmonton to Metro Vancouver for shipping.