MANDAREE, North Dakota (AP) — A company official says the path of brine that spilled from a North Dakota pipeline extends nearly 2 miles (3 kilometers) down a steep ravine.

Miranda Jones, vice president of Crestwood Midstream Partners Inc., says the cause of the spill appears to involve a separation of the pipe that carries oil-drilling saltwater. Crestwood subsidiary Arrow Pipeline LLC owns the pipeline.

Jones says the path of the brine is 8,240 feet (2,511 meters) long and an area of dead vegetation extends about 200 yards (183 meters) from the source of the spill. It's estimated at about 1 million gallons.

Crews are carrying equipment down the steep badlands by hand because of the rough topography.

The EPA is checking to make sure none of the brine reached a lake used for drinking water by an American Indian reservation.