For years, the Port of Seattle has promised that construction of a massive third runway at Seattle-Tacoma International Airport wouldn’t hurt surrounding streams and would actually be a boon to the environment.
But since October, a string of oversights, accidents and intentional actions at the airport has allowed millions of gallons of muddy, oily or antifreeze-laden water to flow into nearby streams, including one occupied by spawning salmon, the state Department of Ecology said Tuesday…