The company that owns a pipeline that spewed oil into California coastal waters says that under the worst-case scenario, up to 105,000 gallons of crude leaked in the spill.

How much of that ended up in the ocean remains unclear.

The Plains All American Pipeline company says in a statement the current estimate remains 21,000 gallons, but it says that figure is under investigation.

The spill happened Tuesday about 20 miles west of Santa Barbara.

The broken onshore pipeline spewed oil down a storm drain and into the Pacific Ocean for several hours before it was shut off. The spill created two slicks that span about 9 miles.