Tesoro has been asked to “correct” a pamphlet that promotes a proposed Vancouver, Wash., terminal as a way to reduce greenhouse gas emissions.

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Tesoro Corp. is coming under fire from the Carnegie Endowment for International Peace for a reference included in a pamphlet promoting a major new oil terminal proposed for Vancouver, Wash.

The Vancouver Energy terminal would service Bakken Shale crude brought by rail to the West Coast. The pamphlet was mailed to some Washington households, and included a graphic showing the Bakken Shale oil would have 30 percent fewer greenhouse gas emissions than crude currently refined in Washington.

On the same page as the graphic, the pamphlet noted a Carnegie study that found some oil sources are substantially less carbon-intensive than others. Carbon emissions are a major greenhouse gas.

A Carnegie official said the pamphlet wrongly implied that their research had analyzed Bakken Shale crude to conclude that it emitted fewer greenhouse gases than other crude.

In a Friday letter to Tesoro, Deborah Gordon, director of Carnegie’s energy and climate program, asked Tesoro to send out a follow-up letter to “correct your errors” to people who received the pamphlet.

Gordon said the endowment has not yet analyzed Bakken Shale emissions. She wrote that “early indications” are that Bakken Shale crude greenhouse gas emissions are likely to vary greatly depending on whether natural gas is flared in the oil fields.

Jennifer Minx, a Tesoro spokeswoman, said the Carnegie letter is under review. She said Tesoro disagrees “with assertions made by the Carnegie Endowment that one sentence citing a study implies the remaining content on the page comes from that study.”

Minx maintains that Bakken Shale crude oil does produce less greenhouse gas emissions than other crude typically refined on the West Coast.