A Unified Command has been established to oversee cleanup operations at the site of an overturned tanker truck on Highway 166.
About 6,000 gallons of crude oil leaked into the Cuyama River when the truck rolled off the side of the highway near Twitchell Dam on Saturday morning.
The Unified Command includes officials from the California Department of Fish and Wildlife's Office of Spill Prevention and Response, the U.S. Environmental Protection Agency, Santa Barbara County Fire Department, and Petrol Transport, Inc.
Officials say the oil is contained and trucks are currently working to remove it.
The Oiled Wildlife Care Network has also been activated to respond to reports of oiled wildlife.
It's estimated the cleanup could take about two weeks.
More information about the cleanup efforts can be found at CalSpillWatch.com.