Tesoro Logistics LP (TLLP) owns, operates, develops and acquires logistics assets. TLLP is a logistics company operating primarily in the western and mid-continent regions of the United States. The Company operates through three segments: Gathering, Processing, and Terminalling and Transportation. Its gathering systems include crude oil and natural gas pipeline gathering systems in the Bakken Shale/Williston Basin area of North Dakota and Montana and the Green River Basin, Uinta Basin and Vermillion Basin in the states of Utah, Colorado and Wyoming. Its Processing segment consists of Vermillion processing complex, the Uinta Basin processing complex (Uinta Basin Complex), the Blacks Fork processing complex and the Emigrant Trail processing complex (Emigrant Trail Complex). Its Terminalling includes California Terminals and Storage Facilities, Washington Terminals and Storage Facilities, Alaska Terminals and Carson California Petroleum Coke Handling and Storage Facility.