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
Refugio oil spill years. Another new law provides for making oil spill response times faster and more effective. Finally, a new law will force intrastate pipelines to use the best-known technology such as automatic shut-off valves. The Pipeline Hazardous Material Safety Administration (PHMSA) is responsible for developing and enforcing regulations for pipeline operation transportation having been created in 2004 within the United States Department of Transportation. In the months following the spill, they found that the in-line inspection tool used by Plains in Line 901 and Line 903 had miscalculated the degree of corrosion. The company also withheld in-line inspection data so “it