A "pre-enforcement notice" has been issued by Oregon Environmental regulators to the Lamb Weston potato processing plant in Hermiston, Oregon. The "pre-enforcement notice" was issued after finding the company overapplied excess wastewater to nearby farmlands. The Oregon Department of Environmental Quality found Lamb Weston had violated its water pollution permit 75 times from 2016 to 2020, totaling nearly 189 tons of excess nitrates into the area's groundwater supply. Lamb Weston could face a formal enforcement action.