Tyson Poultry pled guilty in federal court in Springfield, Missouri, to two criminal charges of violating the Clean Water Act stemming from discharges at its slaughter and processing facility in Monett, Missouri.

Tyson, the nation’s largest chicken producer, is headquartered in Springdale, Arkansas.  Tyson is a subsidiary of Tyson Foods Inc., which owns and operates multiple companies in the food supply and food service industry.

The charges to which Tyson pleaded guilty arose out of a spill after the company mixed ingredients in its chicken feed at its feed mill in Aurora, Missouri.

One ingredient in Tyson’s feed was a liquid food supplement called “Alimet,” which has a pH of less than one.

According to the plea agreement filed in federal court, in May 2014, the tank used to store Alimet at the Aurora feed mill sprang a leak, and the acidic substance flowed into a secondary containment area.

Tyson hired a contractor to remove the Alimet and transport it to Tyson’s Monett plant, where the Alimet was unloaded into the in-house treatment system that was not designed to treat waste with Alimet’s characteristics.

Some of the Alimet made it into the City of Monett’s municipal waste water treatment plant, where it killed bacteria used to reduce ammonia in discharges from the treatment plant into Clear Creek, and resulting in the death of approximately 108,000 fish.

Under the terms of the plea agreement, Tyson will pay a $2 million criminal fine and serve two years of probation.

In addition, Tyson will pay $500,000 to maintain and restore waters in the Monett area, with a focus on Clear Creek and the adjoining waterways.

Tyson will also implement environmental compliance programs including – hiring an independent, third-party auditor to examine all Tyson poultry facilities throughout the country to assess their compliance with the Clean Water Act and hazardous waste laws,  conducting specialized environmental training at its poultry processing plants, hatcheries, feed mills, rendering plants, and waste water treatment plants; and implementing improved policies and procedures to address the circumstances that gave rise to these violations.