Red Oak 1,500 tons of liquid nitrogen fertilizer--with 32% solution--was discharged into a drainage ditch.

https://www.kmaland.com/news/dnr-confirms-montgomery-county-fertilizer-spill/article_a7b39888-e080-11ee-9dc2-2b88f39974a8.html

Officials with NEW Cooperative notified the Iowa Department of Natural Resources of the release. DNR Senior Environmental Specialist Wendy Wittrock tells KMA News approximately 1,500 tons of liquid nitrogen fertilizer--with 32% solution--was discharged into a drainage ditch.

"It had discharged to a small ditch in the area of the co-op--the drainage ditch," said Wittrock. "From there, it made its way out to the East Nishnabotna River."

An investigation determined a valve left open on an aboveground storage tank overnight. Red Oak's Fire Department joined NEW Cooperative employees, Montgomery County Emergency Management and DNR crews in responding to the spill.

"Staff responded to the event, and found where the discharge point was at," she said, "then, was aware of where it was actually discharged into the river. After that, we followed it downstream as to identify how far it went. Fisheries was called on scene, and the extent of the fish kill is still being determined at this time."