 By the end of the 1980s, Atlantic Richfield Company (ARCO) and Berry Petroleum Company held all the various state leasehold interests at Rincon, except one small portion owned by Energy Development Corporation.In 1992, the California State Lands Commission approved the assignment by ARCO to Berry of all its interests in the Rincon leases.When approving that assignment, the Commission required that ARCO remain liable for removing Rincon Island and the causeway leading to it.