Deepwater Horizon oil spill

Oil spill in the Gulf of Mexico

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2021	Environmental impact of the Deepwater Horizon oil spill A new species of baleen whale, Rice's whale (Balaenoptera ricei), was described. Analysis revealed that the Deepwater Horizon oil spill likely devastated the species' population, causing a decline of up to 22% due to reproductive failure among the few mature females.
2020	Deepwater Horizon oil spill Projected economic impact includes potential loss of $8.7 billion in commercial, recreational, and mariculture fisheries, with an estimated 22,000 jobs at risk in the Gulf region.
2020	Deepwater Horizon oil spill response Nearly ten years after the Deepwater Horizon disaster, reports indicated that BP and other oil companies had become more serious about addressing potential environmental contamination threats.
2019	Deepwater Horizon oil spill GulfSource.org reported ongoing testing of pollutants from the Deepwater Horizon oil spill, with no conclusive results produced.
June 2018	Deepwater Horizon oil spill President Donald Trump revoked the executive order establishing the National Ocean Council, aiming to reduce bureaucracy and benefit ocean industries.
January 2018	Deepwater Horizon explosion A detailed estimate published in the Journal of Corporate Accounting and Finance calculated the ultimate costs of the oil spill at US$145.93 billion.
July 2015	Deepwater Horizon explosion BP reached an $18.7 billion settlement with the US government, five states, and 400 local authorities for clean-up, environmental, and economic damages.
2014	Environmental impact of the Deepwater Horizon oil spill A study published in the journal Science revealed that toxins from the oil spill could kill fish by causing cardiac arrest, with even low concentrations of crude oil capable of slowing fish heartbeats. The research focused on Atlantic bluefin tuna and was conducted by Stanford University and NOAA researchers.
September 2014	Deepwater Horizon explosion Halliburton agreed to settle a large percentage of legal claims by paying $1.1 billion into a trust over two years.
September 4 2014	Deepwater Horizon explosion U.S. District Judge Carl Barbier ruled BP was guilty of gross negligence and willful misconduct under the Clean Water Act, apportioning 67% of blame to BP, 30% to Transocean, and 3% to Halliburton.
April 15 2014	Deepwater Horizon oil spill response BP claimed that cleanup along the Gulf Coast was substantially complete, though the United States Coast Guard disputed this assessment, stating significant work remained to be done.
March 2014	Environmental impact of the Deepwater Horizon oil spill A peer-reviewed study published in the Proceedings of the National Academy of Sciences found that tuna and amber jack exposed to oil from the Deepwater Horizon spill developed deformities of the heart and other organs.
2013	Deepwater Horizon oil spill Economic projections estimated the Gulf Coast's tourism losses could reach up to $22.7 billion through 2013.
2013	Deepwater Horizon oil spill Projected Louisiana tourism losses were expected to total $153 million as a result of the Deepwater Horizon oil spill.
2013	Deepwater Horizon oil spill BP's market value declined, dropping from the second to the fourth largest of the four major oil companies due to the oil spill's economic impact.
2012	Environmental impact of the Deepwater Horizon oil spill Scientists and fishermen reported disturbing numbers of mutated marine life in the Gulf, including shrimp born without eyes, fish with lesions and sores, and deformed crabs. In Barataria Bay, Louisiana, 50% of shrimp were found lacking eyes and eye sockets.
2012	Deepwater Horizon oil spill response A study from Georgia Tech and Universidad Autonoma de Aguascalientes (UAA) reported that Corexit dispersant made oil up to 52 times more toxic than oil alone, causing the oil to sink faster and more deeply into beaches and potentially groundwater.
2012	Deepwater Horizon oil spill response A scientific study found that Corexit made oil 52 times more toxic and allowed polycyclic aromatic hydrocarbons to more deeply penetrate beaches and potentially groundwater.
October 3 2012	Deepwater Horizon oil spill response Federal response costs reach $850 million, mostly reimbursed by BP, with 935 response personnel still involved in regional recovery activities.
2011	Deepwater Horizon oil spill response Earthjustice and Toxipedia conducted the first comprehensive analysis of the 57 chemicals in Corexit dispersant formulas 9500 and 9527, revealing potential health and environmental risks including cancer-causing agents, toxins, and endocrine-disrupting chemicals.
December 2011	Deepwater Horizon explosion Cameron International paid a $250 million settlement to BP, resolving all claims related to the Deepwater Horizon incident.
October 2011	Deepwater Horizon explosion Anadarko Petroleum agreed to pay BP $4 billion, settling all claims and yielding its 25% stake in the Macondo well to BP.
June 2011	Deepwater Horizon explosion Weatherford International settled with BP for $75 million.
May 2011	Deepwater Horizon explosion MOEX Offshore agreed to pay US$1.08 billion to settle BP claims related to the Deepwater Horizon accident.
April 21 2011	Deepwater Horizon explosion BP filed $40 billion worth of lawsuits against Transocean, Halliburton, and Cameron, alleging failed safety systems and irresponsible contractor behavior led to the Deepwater Horizon explosion.
2010	Deepwater Horizon oil spill BP experienced significant economic losses, dropping from the second to the fourth largest oil company by 2013 due to market value decline from the Deepwater Horizon oil spill.
2010	Deepwater Horizon oil spill Louisiana reported lost visitor spending totaling $32 million due to the Deepwater Horizon oil spill economic impact.
2010	Deepwater Horizon oil spill response Bacterial bloom in deepwater reportedly respired nearly all released methane within 4 months, leaving behind a residual microbial community of methanotrophic bacteria.
December 2010	Deepwater Horizon oil spill response Presidential commission concluded that the $220 million sand berms captured only a minuscule amount of oil and were ineffective and extremely expensive.
November 2010	Deepwater Horizon oil spill response The EPA reported that in-situ controlled burning removed a significant amount of oil from the water, with 411 fires set between April and mid-July that released cancer-causing dioxins.
November 2010	Deepwater Horizon oil spill response By this time, 17 million cubic yards of sand had been dredged (12 million from the Mississippi River), with 8.5 million cubic yards used to build berms.
November 1 2010	Deepwater Horizon oil spill response Louisiana Governor Bobby Jindal and BP announced a revised agreement to convert completed berms into artificial barrier islands, with $100 million allocated to widen berms, add vegetation, and complete ongoing work.
October 2010	Deepwater Horizon oil spill response Barrier island construction was still ongoing, with plans to complete a total of 22 miles of berm.
September 2010	Deepwater Horizon oil spill response Research revealed that oil-eating microbes primarily digested natural gas (propane, ethane, and butane) rather than oil from the Deepwater Horizon spill.
September 19 2010	Deepwater Horizon oil spill response Deepwater Horizon oil spill officially concludes after approximately five months of continuous environmental impact.
August 2010	Deepwater Horizon oil spill response Terry Hazen of Lawrence Berkeley National Laboratory published a study in Science identifying a previously unknown bacterial species capable of breaking down oil without depleting oxygen levels in the Gulf.
August 2010	Deepwater Horizon oil spill response Marine toxicologist Riki Ott wrote an open letter to the EPA alleging that dispersant use had not stopped and was being administered near shore, challenging official statements about dispersant application.
August 2 2010	Deepwater Horizon oil spill response EPA stated that dispersants did no more harm to the environment than oil itself and helped break down oil faster, despite ongoing concerns from independent scientists.
July 2010	Deepwater Horizon oil spill President Obama issued an executive order establishing the National Ocean Council in direct response to the Deepwater Horizon oil spill, adopting recommendations from the Interagency Ocean Policy Task Force.
July 2010	Deepwater Horizon oil spill response The supertanker A Whale was tested for oil skimming in early July, but failed to collect a significant amount of oil due to BP's use of Corexit dispersant.
July 31 2010	Deepwater Horizon oil spill response Rep. Edward Markey released documents revealing the US Coast Guard repeatedly allowed BP to use excessive amounts of Corexit dispersant on the ocean surface.
July 30 2010	Deepwater Horizon oil spill response More than a significant amount of dispersant, mostly Corexit 9500, had been used in the oil spill response.
July 15 2010	Deepwater Horizon oil spill response BP well was capped, but construction of the berms continued.
July 15 2010	Deepwater Horizon oil spill response Oil drill is finally sealed, marking a significant milestone in stopping the continuous oil leak.
July 12 2010	Deepwater Horizon oil spill response BP report revealed a decrease in Corexit stocks, suggesting possible stock diversion or unreported application.
July 12 2010	Deepwater Horizon oil spill response BP reported applying Corexit dispersants both on the surface and underwater as part of the oil spill response efforts.
June 28 2010	Deepwater Horizon oil spill response BP deployed 32 oil and water separation machines, successfully removing a substantial amount of oily liquid after one week of testing.
June 15 2010	Deepwater Horizon oil spill President Obama delivered a speech addressing the oil spill, declaring it the 'worst environmental disaster America has ever faced' and promising to make BP pay for the damage and help the Gulf Coast recover.
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Deepwater Horizon oil spill

See Also

Transocean

BP

PBS