Tidewater Barge Lines has agreed to pay a reduced fine and undertake a conservation project to settle violations for spilling nearly 40,000 gallons of urea ammonium nitrate liquid fertilizer into the Snake and Columbia rivers in April 2017.
Urea ammonium nitrate is a fertilizer applied to food crops that can be corrosive to steel. A Washington Department of Ecology investigation found that two steel tank barges were corroded or damaged allowing liquid fertilizer to spill into the rivers in four incidents in April 2017. As a result, Ecology fined Tidewater Barge $18,000 in March.
Under the settlement, Tidewater will pay $2,400, as well as pay for a $9,600 conservation project on the Columbia River. The company also provided Ecology a report describing the fertilizer barge maintenance and inspection programs it will be taking to avoid future UAN releases.
Just as fertilizer supports plant growth on land, it does the same in water. “Increasing plant and algae growth lowers the amount of dissolved oxygen in water, which can harm fish, such as the salmon species we are trying hard to recover,” Rich Doenges, a Department of Ecology Water Quality Program manager, said in a Department of Ecology news release. “We appreciate Tidewater’s resolution to this issue and their desire to make sure a violation of this nature doesn’t happen again.”
