OMAHA, Neb. (AP) — The former owner of a butter and buttermilk production plant in northeast Nebraska has agreed to pay $350,000 in civil penalties to the federal government and state for allegedly violating the Clean Water Act.

Mark Peckham of Sheridan, Wyo., owned the plant in West Point. Peckham and his company, Peckham, Inc., are the last two of five defendants to settle claims made in a civil lawsuit brought by the Environmental Protection Agency.

The other three defendants are the city of West Point, West Point Dairy Products and Wimmers Meat Products.

They're accused of dumping pollutants into West Point's wastewater treatment system and Elkhorn River from the late 1970s until 2006.

The defendants are paying a combined $723,000 in penalties.

Copyright 2010 The Associated Press.