The Oregon Department of Environmental Quality has fined the Lamb Weston potato processing facility in Hermiston $127,800 for overapplying wastewater containing nitrogen to farmland and causing nitrate groundwater contamination in the Lower Umatilla Basin, an area with longstanding groundwater contamination. Lamb Weston exceeded the limits on 90 different occasions, resulting in approximately 446,990 pounds of excess nitrogen being applied onto the land application sites between 2015-2021.