KENMARE, N.D. (AP) — The state Health Department is monitoring cleanup of a produced water spill in Burke County.

Produced water is a byproduct of oil production. Officials say Lime Rock Resources III-A notified the department of a spill last Thursday due to a pipeline leak about 13 miles west of Kenmare.

The pipeline is part of a gathering system leading to a saltwater disposal facility. It was struck during installation of another pipeline.

An estimated 16,000 gallons spilled, with all but about 1,000 gallons recovered. The rest impacted agricultural land but was confined to the pipeline trench. State inspectors visited the site.