The Suncor oil refinery in Commerce City, just north of Denver, operates amid a haze of violations and spills, which, over decades, have led environmentalists to call it the state’s “most notorious polluter.” On Tuesday, Congressman Gabe Evans (R-CO), whose district includes the refinery, asked a Trump administration official to further loosen federal regulations on the facility because it must also comply with state law. Just over two years ago…