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
Prestige oil spill a rupture and quickly release much of the remaining oil and create another catastrophic spill. The report urged the government to take "prompt" action. Experts predicted marine life could suffer from the pollution for at least ten years due to the type of oil spill, which contained light fractions with polyaromatic hydrocarbons and could poison plankton, fish eggs and crustaceans with carcinogenic effects in fish and potentially humans as well. In the subsequent months, thousands of volunteers joined the public company TRAGSA (the firm chosen by the regional government to deal with the cleanup) to help clean the affected coastline.