The Supreme Court of Canada will not hear a new appeal from British Columbia First Nations over the Trans Mountain pipeline expansion.
The court dismissed the appeal from the Squamish Nation, Tsleil-Waututh Nation, the Ts'elxweyeqw Tribes and Coldwater Indian Band, effectively ending the years-long legal battle over the project.
The Trans Mountain project was first approved in 2016, but was stopped by the Federal Court of Appeal two years later after First Nations and environmental groups successfully argued the approval process was flawed.
Ottawa approved the project a second time in June 2019 after undergoing additional consultation with the affected communities, but the bands still felt the government did not fulfill its duty to consult and again appealed the decision.
The Federal Court of Appeal ruled in February the approval would stand, saying the government had made a genuine effort to hear and accommodate concerns raised. But the First Nations disagreed and asked the Supreme Court to hear the case.
The bands still have outstanding concerns about the impact the pipeline could have on drinking water as well as ongoing concerns about the effect on marine life, particularly the highly endangered Southern Resident killer whales off the B.C. coast.

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