Summary

• Alberta’s plan to build a pipeline to B.C.’s south coast includes a new terminal capable of servicing supertankers sailing into the Salish Sea.
• If the project goes ahead, very large crude carriers (VLCCs) capable of carrying up to 2.2 million barrels of oil could be loading up at Roberts Bank in the Fraser River estuary.
• A major expansion of the Roberts Bank superport is already in the works with potentially catastrophic impacts on local endangered species.

At the mouth of B.C.’s largest river, industrial development has encroached on important ecosystems for decades. Now, Canada’s plans to boost shipping infrastructure and create a new terminal for oil tankers could increase stress on endangered species and critical habitat.

The Fraser River is truly vast. Its tributaries carry water from nearly one-quarter of B.C., and its delta — the area where the river’s waters mingle with the Salish Sea — stretches from the Vancouver neighbourhood of Point Grey to the American settlement of Point Roberts.

In between, there are mudflats, sandy beaches, eelgrass beds and salt marshes that provide critical habitat for young salmon, migrating birds and countless other species.

“These are really productive environments for fish, for shellfish, for mammals, for birds,” Misty MacDuffee, a salmon biologist and director of Raincoast Conservation Foundation’s wild salmon program, says. 

Freshwater from the Fraser pushes all the way out to the Gulf Islands and the tidal flow from the Salish Sea can make its way all the way to Mission, MacDuffee told The Narwhal. That mingling of freshwater and saltwater creates crucial habitat for young salmon as they make the transition from river living to ocean swimming.“We’ve got all five species of salmon going into the Fraser. It’s Canada’s most productive salmon system — our largest Chinook producer — and it’s really important for the rearing and the migrations of adult and juvenile salmon.”This region has long been subject to development, from canneries and agriculture, to airports and port infrastructure. But now the pressure is ramping up. 

The pipeline pivot to Roberts Bank

On July 2, Prime Minister Mark Carney announced federal support for $10 billion in infrastructure upgrades at the Roberts Bank superport as part of a memorandum of understanding with B.C. 

In the agreement, the federal government also pledged to preserve the ban on oil tankers transiting the waters near B.C.’s North Coast. Keeping the tanker ban in place “without alteration, suspension or narrowing of scope,” as the agreement states, removed the port at Prince Rupert as an option for the terminus of Alberta’s proposed pipeline. Prince Rupert is Canada’s deepest natural harbour, capable of accommodating very large crude carriers (VLCCs), huge tanker ships capable of carrying up to 2.2 million barrels of oil — three times as much as the largest oil tankers currently servicing the Trans Mountain pipeline.

Later the same day, Carney and Alberta Premier Danielle Smith announced plans for a new West Coast pipeline (funded primarily by state-owned pipeline company Trans Mountain), which would follow the same route as the current Trans Mountain pipeline with one key difference: it would detour further south to end at Roberts Bank, instead of in Burnaby. 

Alberta’s submission to the federal Major Projects Office includes a two-berth terminal able to serve very large crude carriers. These ships are 330 metres long — that’s more than three World Cup soccer pitches laid end to end — and have a fully loaded draft of 20 metres. To reach water deep enough for these massive vessels to float in, the terminal’s causeway and jetty would extend about five kilometres out into the Strait of Georgia.

If the project goes ahead, it would be the first time that oil tankers of this size have ever docked in B.C. The largest tankers that can fit beneath the Second Narrows bridge to service Westridge Marine Terminal — the current terminus of the Trans Mountain pipeline — are Aframax tankers, which have a maximum capacity of 800,000 barrels of oil. Currently, even those tankers can only be filled to about 80 per cent, so the port authority has applied to dredge Burrard Inlet to make room for larger loads (a plan the Tsleil–Waututh Nation is fighting). 

On land, the proposed oil terminal would take up 260 hectares — nearly two-thirds the size of Stanley Park. About half of that space would be covered with 15 storage tanks capable of holding 6.5 million barrels.Roberts Bank’s location — hemmed by wetlands, Tsawwassen First Nation treaty lands, parcels in the Agricultural Land Reserve and residential neighbourhoods — raises questions about whether there is enough room for Alberta’s proposal. The Major Projects Office did not respond when asked whether any assessments about fitting the proposed tanker terminal in that location have been completed.A question about whether the oil tanker terminal could be built in conjunction with the proposed port expansion or would have to wait until Roberts Bank Terminal 2 is complete also went unanswered.

The Fraser River estuary has lost 85 per cent of its salmon habitat to the effects of development and there are already plans to double the size of the terminal.

MacDuffee described the estuary as an “incredible natural asset” that has economic and environmental value.

“It supports these vibrant ecosystems that people are travelling from all over the world to visit, to see the Salish Sea, to see whales, to see birds, to see these migrations, to see these special places and here we are moving to take this incredible asset and turn it into an industrial sacrifice zone.”

Tanker terminal piles risk on top of risk

Roberts Bank Terminal 2, as the $3.5-billion planned port expansion is known, would increase the port’s container capacity by 50 per cent. The 2020 federal assessment of Roberts Bank Terminal 2 concluded the expansion’s impact on wetland function, Chinook and chum salmon and southern resident killer whales “is high in magnitude, permanent and irreversible.” In 2023, the federal cabinet concluded the public interest in the port expansion superseded those impacts and approved the project, subject to nearly 400 conditions.

In 2025, the Vancouver Port Authority submitted Roberts Bank Terminal 2 to the Major Projects Office, hoping to see it designated a “nation-building project” and fast-tracked for final approvals. That designation would mean streamlined regulatory processes and assessments.

Alberta’s proposal will also be evaluated by the Major Projects Office. The office did not respond to a question about whether the tanker terminal will be assessed to determine the potential cumulative effects of the project on the Fraser River estuary and Salish Sea.

The proposal to add another terminal and introduce oil supertankers to the Fraser estuary is raising concerns amongst B.C. environmentalists.

“This is supercharging the impact in case of an accident,” Anna Barford, Stand.earth’s oceans campaigner, said. “If we have a spill, if there is a critical problem, if one of these ships loses power and runs aground, we’re looking at incredible devastation in an area that is wildly biodiverse … at the mouth of a very important salmon-bearing river.”

The logistics of bringing such large vessels into the crowded waters of the Salish Sea is also a concern, Barford added.For MacDuffee, the tanker terminal proposal flies in the face of the federal government’s acknowledgement of the Fraser estuary’s importance. With more than $2 million in federal funds, Raincoast has been working to restore salmon habitat degraded by marine infrastructure.

“We’re allowing the flow of water — of nutrients, of sediment, of fish, of everything — back onto Sturgeon Bank, trying to restore the function of this estuary and the opportunity for rearing salmon,” MacDuffee told The Narwhal.

Port expansion poses significant risk to endangered species and critical habitat

Even without adding an oil tanker terminal to the mix, Roberts Bank Terminal 2’s impact on endangered species could be catastrophic, Barford said. 

“We’re looking at increased underwater noise, which we know is very difficult for fish and for creatures like southern resident killer whales that use echolocation to find their food.” 

More than 100 species in the Fraser River estuary are at risk of local extinction by 2045, a 2022 study found. At-risk species include the southern resident orca, whose population was just 74 individuals as of last year’s census. 

Many migrating bird species, including the western sandpiper, could also be negatively impacted by the terminal expansion. During their annual migration from Peru to Alaska, western sandpipers stop in the Fraser estuary, where they fuel up on biofilm, communities of microorganisms that flourish on the estuary’s mudflats. Losing access to this crucial food source would be a significant blow to western sandpipers and the many other migratory bird species.

“Roberts Bank is critical habitat,” Barford said. “Just because it looks muddy … doesn’t mean that it isn’t a paradise for endangered and migratory species.”

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