Volume and extent of the Deepwater Horizon oil spill Volume and extent of the Deepwater Horizon oil spill The "Deepwater Horizon" oil spill was discovered on the afternoon of 22 April 2010 when a large oil slick began to spread at the former rig site. According to the Flow Rate Technical Group, the leak amounted to about of oil, exceeding the 1989 "Exxon Valdez" oil spill as the largest ever to originate in U.S.-controlled waters and the 1979 Ixtoc I oil spill as the largest spill in the Gulf of Mexico. BP has challenged this calculation saying that it is overestimated as it includes over of oil which was
Oil spill governance in the United States important role in creating external networks for governing oil spills in the U.S. international treaties when signed by the U.S. are on the same level as federal law, hence signatory parties must implement domestic legislation to reflect the agreement. This mechanism helps to engineer a number of federal laws governing oil spills such as the intervention on the High Sea Act of 1974. International conventions serve a key role in developing standards for oil carrying vessels from different nations into the U.S. The two major conventions which have contributed to oil spill governance are the 1969 International Convention Relating to