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 Intervention on the High Seas in Cases of Oil Pollution Casualties (the Intervention Convention) and the International Convention for the Prevention of Pollution from Ships (MARPOL 73/78). The most important international organisations that contribute to oil spill governance in the U.S. include the International Maritime Organization (IMO), International Spill Control Organisation (ISCO) and the Association of Petroleum Industry Managers (APICOM). The oil spill framework in the U.S. employs a multilateral system of governance where the federal authorities, NGO's and private parties are all actively involved in response and cleanup procedures. Although the U.S. government plays an important role in regulating