The Tesoro oil refinery in Anacortes is among six in the nation that will receive new equipment to reduce toxic air pollution. It’s part of a $425 million settlement for alleged violations of the Clean Air Act. The U.S. Justice Department and the Environmental Protection Agency announced the deal in Seattle, calling it the largest settlement to date of its kind. The agreement requires installation of new equipment at all six refineries, worth a total more than $400-million. It will reduce