(Radio Iowa) – Iowa’s attorney general has reached a settlement with a southwest Iowa business for a fertilizer spill that killed hundreds of thousands of fish. The spill originated at NEW Cooperative in Red Oak when a valve on a fertilizer tank was left open during a weekend in early March of last year.

Over 250-thousand gallons of liquid nitrogen wound up in the East Nishnabotna River. Iowa officials estimate more than 750-thousand fish were killed downstream.

New Cooperative spill

The Nishnabotna River drains into the Missouri River and the Missouri Department of Conservation reported a near total fish kill in the roughly 10-mile stretch in northwest Missouri.

The coop has agreed to pay a 50-thousand dollar penalty and pay 50-thousand dollars to the Montgomery County Conservation Board for an environmental project.