Efforts to stem the Deepwater Horizon oil spill Efforts to stem the Deepwater Horizon oil spill Efforts to stem the "Deepwater Horizon" oil spill were ongoing from the time that the "Deepwater Horizon" exploded on 4/20/2010 until the well was sealed by a cap on July 15, 2010. Various species of dolphins and other mammals (61 casualties), birds (2,095 casualties), and the endangered sea turtles (467 casualties) have been killed either directly or indirectly by the oil spill. The "Deepwater Horizon" spill has surpassed in volume the 1989 "Exxon Valdez" oil spill as the largest ever to originate in U.S.-controlled waters; it is comparable to the 1979 Ixtoc
Oil spill governance in the United States Oil spill governance in the United States Oil spill governance in the United States is governed by federal law. The governance framework for oil spills in the United States prior to the Oil Pollution Act (OPA) of 1990 lacked proper consolidation and proved to be inadequate in preventing and responding to oil spillages. A timeline produced by the World Resources Institute (WRI) highlights some key events in oil drilling governance and regulatory system that ultimately govern oil spills in the United States. Although the OPA provides a framework for oil spillage governance recent events resulting in the BP deep water