sentences:  Many of the refineries in California and Washington State are capable of processing heavy oil because much of the oil production in California is heavy, as is much imported oil.They have also noted that a mix of 55% North Dakota Bakken oil and 45% Western Canadian Select is a reasonable substitute for badly diminished supplies of Alaska North Slope oil.PADD V is physically disconnected from the pipeline systems of the rest of the United States, but the Trans Mountain Pipeline delivers oil of all types from Alberta across British Columbia to refineries in Washington, which in 2012 processed of imported oil, 60% of which came from Canada.