OMAHA, Neb.–(BUSINESS WIRE)–Green Plains Inc. (NASDAQ: GPRE) today announced that its facility in Superior, Iowa, has produced its one-billionth gallon of ethanol, marking a significant milestone in the facility’s nearly two decades of operation. Commissioned in 2008, the facility was one of the first production assets in the Green Plains fleet and remains an important economic driver for Dickinson County and the surrounding region. Today, the facility employs nearly 50 team members and suppo