DICKINSON, N.D. — A pipeline leak in Stark County spilled about 8,400 gallons of produced water.

Produced water is a mixture of saltwater and oil that can contain drilling chemicals. It's a byproduct of oil and gas development.

North Dakota's Department of Environmental Quality says pipeline operator Scout Energy Management LLC reported the spill on Monday, June 17, the day it occurred west of Dickinson near the Interstate 94 on-ramp at mile marker 57.

The 200 barrels of produced water that leaked impacted a small drainage area. The company used diking to contain the spill and has recovered all of it.

State officials have inspected the site and are continuing to monitor it.