DEQ said the plant, also known as the Bogalusa Paperboard Mill, discharged "black liquor,'' a byproduct of the paper-making process, into the river during a plant malfunction beginning Aug. 9. The black liquor triggered the fish kill. The compliance order slaps the plant for not notifying authorities in a timely manner of the malfunction and discharge, for exceeding its discharge permits and for an unauthorized discharge. The company must also submit a plan that shows "long-term operation, maintenance and process changes to ensure repeat or similar incidents do not occur at this facility," DEQ said. DEQ has said it didn't find out about the fish kill until Aug. 13, when a reporter called the agency to inquire about it. DEQ said its scientists were in the field eight hours before Temple-Inland notified the agency.