Alyeska Pipeline Service Company designs, constructs, operates, and maintains the Trans-Alaska Pipeline System (TAPS) for the transportation of oil. TAPS is jointly owned by BP Pipelines (Alaska) Inc., Phillips Transportation Alaska, Inc., ExxonMobil Pipeline Company, Amerada Hess Corporation, and Unocal Pipeline Company. The company was founded in 1970 and is based in Anchorage, Alaska.