Tesoro

The Skagit County Hearing Examiner has approved a Shoreline Substantial Development Permit for a proposed oil refinery expansion. The Andeavor Anacortes…

The largest workplace-safety fine in Washington history has been overturned.A state appeals judge on Friday rejected a $2.4 million fine that oil company…

A nearly six-year-long legal battle drew to a close Thursday when attorneys made their final arguments on whether Texas oil company Tesoro is responsible…

Texas oil company Tesoro and the purchaser of one of its refineries have agreed to spend $403 million to reduce air pollution at oil refineries in six…

The Tesoro oil refinery in Anacortes, Washington, is getting hit with more fines.This time, the Environmental Protection Agency wants the refinery to pay…

An oil refinery on Puget Sound wants to ship a raw material for plastic overseas, and some environmental groups say that's a bad idea. The Tesoro refinery…

EVERETT, Wash. – Dean Smith, 72, sits in his car by the tracks north of Seattle.It’s a dark, rainy Tuesday night, and Smith waits for an oil train to come…

It was the state’s worst industrial accident in nearly 50 years.On a chilly April night in 2010, a giant fireball lit up the sky above Anacortes,…