On December 24, 1993, a pipeline owned and operated by Berry Petroleum Company (Berry) ruptured causing the discharge of approximately 2,075 barrels of crude oil (the Spill) in the vicinity of McGrath Lake in Ventura County, California. Release of the crude oil resulted in petroleum contamination along a pathway that extended from the pipeline rupture, along a riparian corridor and adjacent wooded areas, into McGrath Lake, through a diversion pipeline into a slough that traverses the dunes and beach, into the Pacific Ocean and onto approximately seven (7) miles of sandy beach. Cleanup of the beach, dunes, lake, and riparian corridor included removal and/or disturbance of oiled and un-oiled terrestrial and aquatic vegetation, debris, sand, soil, and sediments using heavy equipment and hand tools.