See this note also.
It's going to take some fancy legal footwork for a court to overturn precedent -- Trudeau and the court killed the Northern Gateway by throwing out the "killer whale card."
As Hunter S. Thompson would say: this is the "nut" of the ruling today: no one can contest that increased shipping will have adverse effect on killer whales off the coast of British Columbia, but most damning, the pipeline company punted or ignored the issue, almost "contemptuously" if the transcript can be believed.
From the ruling:
 Bearing in mind that the primary focus of the applicants’ concern about the Board’s assessment of Project-related marine shipping is the Board’s assessment of the adverse effects of the Project on Southern resident killer whales, the previous review of the Board’s findings demonstrates that the Board considered the Project’s effects on the Southern resident killer whales, including the environmental effects of malfunctions or accidents that might occur, the significance of those effects and the cumulative effects of the Project on efforts to promote recovery of the species. The Board found the operation of the Project-related tankers was likely to result in significant, adverse effects to the Southern resident killer whale population.
 Given the Board’s finding that the Project was likely to result in significant adverse effects on the Southern resident killer whale, and its finding that Project-related marine vessel traffic would further contribute to the total cumulative effects (which were determined to be significant), the Board found that the increase in marine vessel traffic associated with the Project is likely to result in significant adverse effects on the traditional Indigenous use associated with the Southern resident killer whale.
 The Board then considered mitigation measures through the limited lens of its regulatory authority. It found there were no direct mitigation measures Trans Mountain could apply to reduce or eliminate potential adverse effects from Project-related tankers.
 The Board stated that it considered all reasonable alternatives to Project-related marine shipping that would reduce the impact on SARA-listed species’ critical habitat. This would include the critical habitat of the Southern resident killer whale. As part of this consideration, the Board directed Information Request No. 2 to Trans Mountain. In material part, Trans Mountain responded that the only known potential mitigation measures relevant to the Salish Sea to reduce the risk of marine mammal vessel strikes would be to alter the shipping lanes in order to avoid sensitive habitat (that is areas where whales aggregate), and to set speed restrictions. Trans Mountain advised that shipping lanes and speed restrictions are set at the discretion of Transport Canada.
 Thereafter, the Board issued an Information Request to Transport Canada that, among other things, requested Transport Canada to summarize any initiatives it was currently supporting or undertaking that evaluated potential alternative shipping lanes or vessel speed reductions along the southern coast of British Columbia with the intent of reducing impacts on marine mammals from marine shipping. Transport Canada responded that it was“not currently contemplating alternative shipping lanes or vessel speed restrictions for the purpose of reducing impacts on marine mammals from marine shipping in British Columbia”. However, Transport Canada noted it was participating in the Enhancing Cetacean Habitat and Observation Program led by Port Metro Vancouver.
[437 Transport Canada’s statement that it had no current intent to make alterations to shipping lanes or to impose vessel speed restrictions would seem to have pre-empted further consideration of routing alternatives by the Board.
 This review of the Board’s report has shown that the Board in its assessment of Project-related marine shipping considered:
- the effects of Project-related marine shipping on Southern resident killer whales;
- the significance of the effects;
- the cumulative effect of Project-related marine shipping on the recovery of the Southern resident killer whale population;
- the resulting significant, adverse effects on the traditional Indigenous use associated with the Southern resident killer whale;
- mitigation measures within its regulatory authority; and,
- reasonable alternatives to Project-related marine shipping.