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Deepwater Horizon oil spill
The oil slick as seen from space by NASA's Terra satellite on May 24, 2010.Location Gulf of Mexico near Mississippi River Delta, United States Coordinates 28°44′12″N 88°21′58″W / 28.736628°N 88.365997°WCoordinates:
Date Spill date: 20 April – 15 July 2010
Well officially sealed: 19 September 2010Cause Cause Wellhead blowout Casualties 13 dead (11 killed on Deepwater Horizon, 2 additional oil-related deaths)[1][2]
17 injuredOperator Transocean under contract for BP[3] Spill characteristics Volume up to 4,900,000 barrels (206,000,000 US gallons; 779,000 cubic meters)[4] Area 2,500 to 68,000 sq mi (6,500 to 180,000 km2)[5] The Deepwater Horizon oil spill (also referred to as the BP oil spill, the Gulf of Mexico oil spill, the BP oil disaster or the Macondo blowout)[6][7][8] is an oil spill in the Gulf of Mexico which flowed for three months in 2010. The impact of the spill continues since the well was capped. It is the largest accidental marine oil spill in the history of the petroleum industry.[9][10][11] The spill stemmed from a sea-floor oil gusher that resulted from the April 20, 2010 Deepwater Horizon drilling rig explosion. The explosion killed 11 men working on the platform and injured 17 others.[12] On July 15, the leak was stopped by capping the gushing wellhead,[13] after it had released about 4.9 million barrels (780×10^3 m3), or 205.8 million gallons of crude oil.[4] It was estimated that 53,000 barrels per day (8,400 m3/d) were escaping from the well just before it was capped.[11] It is believed that the daily flow rate diminished over time, starting at about 62,000 barrels per day (9,900 m3/d) and decreasing as the reservoir of hydrocarbons feeding the gusher was gradually depleted.[11] On September 19, the relief well process was successfully completed and the federal government declared the well "effectively dead".[14]
The spill continues to cause extensive damage to marine and wildlife habitats as well as the Gulf's fishing and tourism industries.[15][16] In late November, 4,200 square miles of the Gulf were re-closed to shrimping after tar balls were found in shrimpers' nets.[17] The total amount of Louisiana shoreline impacted by oil grew from 287 in July to 320 miles in late November.[18]
Skimmer ships, floating containment booms, anchored barriers, sand-filled barricades along shorelines, and dispersants were used in an attempt to protect hundreds of miles of beaches, wetlands and estuaries from the spreading oil. Scientists have also reported immense underwater plumes of dissolved oil not visible at the surface[19] as well as an 80 square mile "kill zone" surrounding the blown BP well where "it looks like everything is dead" on the seafloor, according to independent researcher Samantha Joye.[20]
The U.S. Government has named BP as the responsible party, and officials have committed to holding the company accountable for all cleanup costs and other damage.[21] After its own internal probe, BP admitted that it made mistakes which led to the Gulf of Mexico oil spill.[22]
Contents
[hide][edit] Background
[edit] Deepwater Horizon drilling rig
Main article: Deepwater HorizonThe Deepwater Horizon was a 9-year-old semi-submersible mobile offshore drilling unit, a massive floating, dynamically positioned drilling rig that could operate in waters up to 8,000 feet (2,400 m) deep and drill down to 30,000 feet (9,100 m).[23] The rig was built by South Korean company Hyundai Heavy Industries.[24] It was owned by Transocean, operated under the Marshallese flag of convenience, and was under lease to BP from March 2008 to September 2013.[25] At the time of the explosion, it was drilling an exploratory well at a water depth of approximately 5,000 feet (1,500 m) in the Macondo Prospect, located in the Mississippi Canyon Block 252 of the Gulf of Mexico in the United States exclusive economic zone about 41 miles (66 km) off the Louisiana coast.[26][27] Production casing was being installed and cemented by Halliburton Energy Services. Once the cementing was complete, the well would have been tested for integrity and a cement plug set, after which no further activities would take place until the well was later activated as a subsea producer.[28][29] At this point, Halliburton modelling systems were used several days running to design the cement slurry mix and ascertain what other supports were needed in the well bore.[30] BP is the operator and principal developer of the Macondo Prospect with a 65% share, while 25% is owned by Anadarko Petroleum Corporation, and 10% by MOEX Offshore 2007, a unit of Mitsui.[31] BP leased the mineral rights for Macondo at the Minerals Management Service's lease sale in March 2008.[32]
[edit] Explosion
Main article: Deepwater Horizon explosionVessels combat the fire on the Deepwater Horizon while the United States Coast Guard searches for missing crewAt approximately 9:45 p.m. CDT on April 20, 2010, methane gas from the well, under high pressure, shot all the way up and out of the drill column, expanded onto the platform, and then ignited and exploded. Fire then engulfed the platform.[29][33] Most of the workers escaped the rig by lifeboat and were subsequently evacuated by boat or airlifted by helicopter for medical treatment;[34] however, eleven workers were never found despite a three-day Coast Guard search operation, and are presumed to have died in the explosion.[35] Efforts by multiple ships to douse the flames were unsuccessful. After burning for approximately 36 hours, the Deepwater Horizon sank on the morning of April 22, 2010.[36]
[edit] Volume and extent of oil spill
Main article: Timeline of the Deepwater Horizon oil spillAn oil leak was discovered on the afternoon of April 22 when a large oil slick began to spread at the former rig site.[37] According to the Flow Rate Technical Group the leak amounted to about 4.9 million barrels (205.8 million gallons) 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.[4][11]
[edit] Spill flow rate
In their permit to drill the well, BP estimated the worst case flow at 162,000 barrels per day (25,800 m3/d).[38] Immediately after the explosion BP and the United States Coast Guard did not estimate any oil leaking from the sunken rig or from the well.[39] On April 24, Coast Guard Rear Admiral Mary Landry announced that a damaged wellhead was indeed leaking.[40][41] She stated that "the leak was a new discovery but could have begun when the offshore platform sank ... two days after the initial explosion."[40] Initial estimates by Coast Guard and BP officials, based on remotely operated vehicles as well as the oil slick size, indicated the leak was as much as 1,000 barrels per day (160 m3/d).[40] Outside scientists quickly produced higher estimates, which presaged later increases in official numbers.[42][43][44] Official estimates increased from 1,000 to 5,000 barrels per day (160 to 790 m3/d) on April 29,[45][46] to 12,000 to 19,000 barrels per day (1,900 to 3,000 m3/d) on May 27,[47][48][49][50] to 25,000 to 30,000 barrels per day (4,000 to 4,800 m3/d) on June 10,[51][52][53] and to between 35,000 and 60,000 barrels per day (5,600 and 9,500 m3/d), on June 15.[54][55] Internal BP documents, released by Congress, estimated the flow could be as much as 100,000 barrels per day (16,000 m3/d), if the blowout preventer and wellhead were removed and if restrictions were incorrectly modeled.[56][57]
Progression of oil spill flow rate estimates
Source Date Barrels per day Gallons per day Cubic metres per day BP estimate of hypothetical worst case scenario (assumes no blowout preventer) Permit 162,000 6,800,000 25,800 United States Coast Guard April 23 (after sinking) 0 0 0 BP and United States Coast Guard April 24 1,000 42,000 160 Official estimates April 29 1,000 to 5,000 42,000 to 210,000 790 Official estimates May 27 12,000 to 19,000 500,000 to 800,000 1,900 to 3,000 Official estimates June 10 25,000 to 30,000 1,100,000 to 1,300,000 4,000 to 4,800 Flow Rate Technical Group June 19 35,000 to 60,000 1,500,000 to 2,500,000 5,600 to 9,500 Internal BP documents hypothetical worst case (assumes no blowout preventer) June 20 up to 100,000 up to 4,200,000 up to 16,000 Official estimates[58] August 2 62,000 2,604,000 9,857 Official estimates were provided by the Flow Rate Technical Group—scientists from USCG, National Oceanic and Atmospheric Administration (NOAA), Bureau of Ocean Energy Management, Regulation and Enforcement, U.S. Department of Energy (DOE), and outside academics, led by United States Geological Survey (USGS) director Marcia McNutt.[59][60][61] The later estimates were believed to be more accurate because it was no longer necessary to measure multiple leaks, and because detailed pressure measurements and high-resolution video had become available.[62] According to BP, estimating the oil flow was very difficult as there was no underwater metering at the wellhead and because of the natural gas in the outflow.[45] The company had initially refused to allow scientists to perform more accurate, independent measurements, saying that it was not relevant to the response and that such efforts might distract from efforts to stem the flow.[19] Former Administrator of the Environmental Protection Agency Carol Browner and Congressman Ed Markey (D-MA) both accused BP of having a vested financial interest in downplaying the size of the leak in part due to the fine they will have to pay based on the amount of leaked oil.[63]
The final estimate reported that 53,000 barrels per day (8,400 m3/d) were escaping from the well just before it was capped on July 15. It is believed that the daily flow rate diminished over time, starting at about 62,000 barrels per day (9,900 m3/d) and decreasing as the reservoir of hydrocarbons feeding the gusher was gradually depleted.[11]
[edit] Spill area and thickness
The oil's spread was initially increased by strong southerly winds caused by an impending cold front. By April 25, the oil spill covered 580 square miles (1,500 km2) and was only 31 miles (50 km) from the ecologically sensitive Chandeleur Islands.[64] An April 30 estimate placed the total spread of the oil at 3,850 square miles (10,000 km2).[65] The spill quickly approached the Delta National Wildlife Refuge and Breton National Wildlife Refuge.[66] On May 19 both the National Oceanic and Atmospheric Administration and other scientists monitoring the spill with the European Space Agency Envisat radar satellite stated that oil had reached the Loop Current, which flows clockwise around the Gulf of Mexico towards Florida and then joins the Gulf Stream along the U.S. east coast.[67] On June 29, the National Oceanic and Atmospheric Administration determined that the oil slick was no longer a threat to the loop current and stopped tracking offshore oil predictions that include the loop currents region. The omission is noted prominently on the ongoing nearshore surface oil forecasts that are posted daily on the National Oceanic and Atmospheric Administration site.[67][68]
On May 14, the Automated Data Inquiry for Oil Spills model indicated that about 35% of a hypothetical 114,000 barrels (18,100 m3) spill of light Louisiana crude oil released in conditions similar to those found in the Gulf would evaporate, that 50% to 60% of the oil would remain in or on the water, and the rest would be dispersed in the ocean. In the same report, Ed Overton says he thinks most of the oil is floating within 1 foot (30 cm) of the surface.[69] The New York Times is tracking the size of the spill over time using data from National Oceanic and Atmospheric Administration, the US Coast Guard and Skytruth.[70]
The wellhead was capped on July 15 and by July 30 the oil appeared to have dissipated more rapidly than expected. Some scientists believe the rapid dissipation of the surface oil may have been due to a combination of factors that included the natural capacity of the region to break down oil (petroleum normally leaks from the ocean floor by way of thousands of natural seeps and certain bacteria are able to consume it.); winds from storms appeared to have aided in rapidly dispersing the oil, and the clean-up response by BP and the government helped control surface slicks. As much as 40% of the oil may have simply evaporated at the ocean surface, and an unknown amount remains below the surface.[71]
However, many scientists dispute the report's methodology and figures.[72] Ronald Kendall, director of Texas Tech University's Institute of Environmental and Human Health, said, "I'm suspect if that's accurate or not; I'd like to say that even if it's true, there are still 50 to 60 million gallons [1.2 to 1.4 million barrels] that are still out there."[73] Scientists said a lot of oil was still underwater and could not be detected.[73] According to the NOAA report released on August 4, about half of the oil leaked into the Gulf remains on or below the Gulf's surface.[74] Some scientists are calling the NOAA estimates "ludicrous." According to University of South Florida chemical oceanographer David Hollander, while 25% of the oil can be accounted for by burning, skimming, etc., 75% is still unaccounted for.[75] The federal calculations are based on direct measurements for only 430,000 barrels (18,000,000 US gal) of the oil spilled — the stuff burned and skimmed. The other numbers are "educated scientific guesses," said Bill Lehr, an author of the NOAA report, because "it is impossible to measure oil that is dispersed". FSU oceanography professor Ian MacDonald called it "a shaky report" and is unsatisfied with the thoroughness of the presentation and "sweeping assumptions" involved.[76] John Kessler of Texas A&M, who led a National Science Foundation on-site study of the spill, said the report that 75% of the oil is gone is "just not true" and that 50% to 75% of the material that came out of the well remains in the water in a "dissolved or dispersed form".[77] On August 16, University of Georgia scientists said their analysis of federal estimates shows that 80% of that BP oil the government said was gone from the Gulf of Mexico is still there. The Georgia team said 'it is a misinterpretation of data to claim that oil that is dissolved is actually gone'.[78]
[edit] Oil sightings
Oil began washing up on the beaches of Gulf Islands National Seashore on June 1.[79] By June 4, the oil spill had landed on 125 miles (201 km) of Louisiana's coast, had washed up along Mississippi and Alabama barrier islands, and was found for the first time on a Florida barrier island at Pensacola Beach.[80] On June 9, oil sludge began entering the Intracoastal Waterway through Perdido Pass after floating booms across the opening of the pass failed to stop the oil.[81] On June 23, oil appeared on Pensacola Beach and in Gulf Islands National Seashore, and officials warned against swimming for 33 miles (53 km) east of the Alabama line.[82][83] On June 27, tar balls and small areas of oil reached Gulf Park Estates, the first appearance of oil in Mississippi.[84] Early in July, tar balls reached Grand Isle but 800 volunteers were cleaning them up.[85] On July 3 and July 4, tar balls and other isolated oil residue began washing ashore at beaches in Bolivar and Galveston, though it was believed a ship transported them there, and no further oil was found July 5.[86] On July 5, strings of oil were found in the Rigolets in Louisiana, and the next day tar balls reached the shore of Lake Pontchartrain.[86][87]
On September 10, it was reported that a new wave of oil suddenly coated 16 miles of Louisiana coastline and marshes west of the Mississippi River in Plaquemines Parish. The Louisiana Department of Wildlife and Fisheries confirmed the sightings.[88]
On October 23, it was reported that miles-long stretches of weathered oil had been sighted in West Bay, Texas between Southwest Pass, the main shipping channel of the Mississippi River, and Tiger Pass near Venice, Louisiana. The sightings were confirmed by Matthew Hinton of The Times-Picayune.[89]
At the end of October, Scientists who were aboard two research vessels studying the spill's impact on sea life announced they had found substantial amounts of oil on the seafloor, contradicting statements by federal officials that the oil had largely disappeared. Kevin Yeager, a University of Southern Mississippi assistant professor of marine sciences found oil in samples dug up from the seafloor in a 140-mile (230 km) radius around the site of the Macondo well. The oil ranged from light degraded oil to thick raw crude, Yeager said. Yeager's team still needs to "fingerprint" the samples in labs to determine definitively that the oil came from BP's well. The sheer abundance of oil and its proximity to the well site, though, makes it "highly likely" that the oil is from the Macondo well, he said. A second research team also turned up traces of oil in sediment samples as well as evidence of chemical dispersants in blue crab larvae and long plumes of oxygen-depleted water emanating from the well site 50 miles (80 km) off Louisiana's coast.[90]
In late November, Plaquemine Parish, Louisiana coastal zone director P.J. Hahn reported that more than 32,000 US gallons (760 bbl) of oil had been sucked out of nearby marshes in the previous 10 day period. In Barataria Bay, Louisiana, photos and first-hand accounts show oil still reaching high into the marshes, baby crabs and adult shrimp covered by crude and oil slicks on the surface of the water. "In some ways it's worse today," Hahn said, "because the world mistakenly thinks all the oil has somehow miraculously disappeared".[18]
[edit] Underwater oil plumes
On May 15, researchers from the National Institute for Undersea Science and Technology,[91] aboard the research vessel RV Pelican, identified oil plumes in the deep waters of the Gulf of Mexico,[92] including one as large as 10 miles (16 km) long, 3 miles (4.8 km) wide and 300 feet (91 m) thick in spots. The shallowest oil plume the group detected was at about 2,300 feet (700 m), while the deepest was near the seafloor at about 4,593 feet (1,400 m).[93] Other researchers from the University of Georgia have found that the oil may occupy multiple layers.[94] By May 27, marine scientists from the University of South Florida had discovered a second oil plume, stretching 22 miles (35 km) from the leaking wellhead toward Mobile Bay, Alabama. The oil had dissolved into the water and was no longer visible. Undersea plumes may be the result of the use of wellhead chemical dispersants.[95] The National Oceanic and Atmospheric Administration (NOAA) conducted an independent analysis of the water samples provided from the 22–28 May research mission of the University of South Florida's Weatherbird II vessel. The samples from all undersea plumes were in very low concentrations, less than 0.5 parts per million. NOAA also indicated that one of the plumes was unrelated to the BP wellhead leak, while the other plume samples were in concentrations too low or too highly fractionated to determine their origin.[96] Reporting on a study that ended on June 28, scientists published conclusive evidence of a deep plume 22 miles (35 km) long linked directly to the Deepwater Horizon well. They reported that it did not appear to be degrading very fast and may pose a long-lasting threat for marine life deep in the ocean.[97] On July 23, University of South Florida researchers and NOAA released two separate studies confirming subsea plumes of oil resulting from the Deepwater Horizon well.[98] Researchers from NOAA and Princeton University concluded that the deep plumes of dissolved oil and gas will likely remain confined to the northern Gulf of Mexico and that the peak impact on dissolved oxygen will be delayed (several months) and long lasting (years).[99][100]
David Valentine of the University of California, Santa Barbara believes that the oil plumes have been diluted in the ocean faster than they have biodegraded, suggesting that the LBNL researchers are overestimating the rate of biodegration.[101] He does not challenge their finding that the oil plumes have dispersed.
When scientists initially reported the discovery of undersea oil plumes, BP stated its sampling showed no evidence that oil was massing and spreading in the gulf water column. NOAA chief Jane Lubchenco urged caution, calling the reports "misleading, premature and, in some cases, inaccurate."[102] Researchers from the Universities of South Florida and Southern Mississippi claim the government tried to squelch their findings. "We expected that NOAA would be pleased because we found something very, very interesting," said Vernon Asper, an oceanographer at the USM. "NOAA instead responded by trying to discredit us. It was just a shock to us."[103] Lubchenco rejected Asper's characterization, saying "What we asked for, was for people to stop speculating before they had a chance to analyze what they were finding."[104] She argued for the necessity of chemically fingerprinting the plumes in order to distinguish them from oil seeps that occur naturally in the Gulf.[105] In a report released on June 8, NOAA stated that one plume was consistent with the oil from the leak, one was not consistent, and that they were unable to determine the origin of two samples for certain.[96]
On June 23, NOAA released a report which confirmed the existence of deepwater oil plumes in the Gulf and that they originate from BP's well, citing a "preponderance of evidence" gathered from four separate sampling cruises. From the government's report:[106] "The preponderance of evidence based on careful examination of the results from these four different cruises leads us to conclude that DWH-MC252 oil exists in subsurface waters near the well site in addition to the oil observed at the sea surface and that this oil appears to be chemically dispersed. While no chemical "fingerprinting" of samples was conducted to conclusively determine origin, the proximity to the well site and the following analysis support this conclusion".[107]
In October 2010, scientists reported the presence of a continuous plume of over 35 kilometers in length at a depth of about 1100 meters. That plume persisted for several months without substantial degradation.[108]
[edit] Oil on seafloor
In August, researchers at the University of South Florida reported finding oil on the seafloor in the form of oil particles sprinkled on top of the mud. These new findings strongly suggest that it 'didn't just drizzle oil, in some places it was a blizzard'. David Hollander, from USF, says the government's original attempt to figure out what happened to the oil failed to consider that it could end up on the seafloor, and only counted how much washed ashore, how much evaporated and how much might have stayed under the waves.[109]
On September 10, Samantha Joye, a professor in the Department of Marine Sciences at the University of Georgia on a research vessel in the Gulf of Mexico announced her team's findings of a substantial layer of oily sediment stretching for dozens of miles in all directions suggesting that a lot of oil did not evaporate or dissipate but may have settled to the seafloor. She describes seeing layers of oily material covering the bottom of the seafloor, in some places more than 2 inches thick atop normal sediments containing dead shrimp and other organisms. She speculates that the source may be organisms that have broken down the spilled oil and excreted an oily mucus that sinks, taking with it oil droplets that stick to the mucous. "We have to [chemically] fingerprint the oil and link it to the Deepwater Horizon," she says. "But the sheer coverage here is leading us all to come to the conclusion that it has to be sedimented oil from the oil spill, because it's all over the place."[110][111]
[edit] Independent monitoring
Wildlife and environmental groups accused BP of holding back information about the extent and impact of the growing slick, and urged the White House to order a more direct federal government role in the spill response. In prepared testimony for a congressional committee, National Wildlife Federation President Larry Schweiger said BP had failed to disclose results from its tests of chemical dispersants used on the spill, and that BP had tried to withhold video showing the true magnitude of the leak.[112] On May 19 BP established a live feed, popularly known as spillcam, of the oil spill after hearings in Congress accused the company of withholding data from the ocean floor and blocking efforts by independent scientists to come up with estimates for the amount of crude flowing into the Gulf each day.[113][114] On May 20 United States Secretary of the Interior Ken Salazar indicated that the U.S. government would verify how much oil has leaked into the Gulf of Mexico.[115] Environmental Protection Agency Administrator Lisa Jackson and United States Secretary of Homeland Security Janet Napolitano asked for the results of tests looking for traces of oil and dispersant chemicals in the waters of the gulf.[116]
Journalists attempting to document the impact of the oil spill were repeatedly refused access to public areas and photojournalists were prevented from flying over areas of the gulf to document the scope of the disaster. These accusations were leveled at BP, its contractors, local law enforcement, USCG and other government officials.[117][118] Scientists also complained about prevention of access to information controlled by BP and government sources.[117] BP stated that its policy is to allow the media and other parties as much access as possible.[117] On June 30, the Coast Guard put new restrictions in place across the Gulf Coast that prevented vessels from coming within 20 meters (66 ft) “ of booming operations, boom, or oil spill response operations ”.[119] In a press briefing, Coast Guard admiral Thad Allen said the new regulation was related to safety issues.[120] On CNN's 360, host Anderson Cooper rejected the motivation for the restrictions outright.[121]
[edit] Efforts to stem the flow of oil
Main article: Efforts to stem the Deepwater Horizon oil spillSee also: Offshore oil spill prevention[edit] Short-term efforts
Oil containment dome under construction in Port Fourchon, Louisiana, at Wild Well Control on April 26The first attempts to stop the oil spill were to use remotely operated underwater vehicles to close the blowout preventer valves on the well head; however, all these attempts failed.[64][122] The second technique, placing a 125-tonne (280,000 lb) containment dome (which had worked on leaks in shallower water) over the largest leak and piping the oil to a storage vessel on the surface, failed when gas leaking from the pipe combined with cold water formed methane hydrate crystals that blocked the opening at the top of the dome.[123] Attempts to close the well by pumping heavy drilling fluids into the blowout preventer to restrict the flow of oil before sealing it permanently with cement ("top kill") also failed.[124][125]
More successful was the process of positioning a riser insertion tube into the wide burst pipe. There was a stopper-like washer around the tube that plugs the end of the riser and diverts the flow into the insertion tube.[126] The collected gas was flared and oil stored on the board of drillship Discoverer Enterprise.[127] 924,000 US gallons (22,000 barrels) of oil were collected before removal of the tube.[128] By June 3, BP removed the damaged riser from the top of the blowout preventer and covered the pipe by the cap which connected it to a riser.[129] CEO of BP Tony Hayward stated that as a result of this process the amount captured was "probably the vast majority of the oil."[130] However, the FRTG member Ira Leifer said that more oil was escaping than before the riser was cut and the cap containment system was placed.[131]
On June 16, a second containment system connected directly to the blowout preventer became operational carrying oil and gas to the Q4000 service vessel where it was burned in a clean-burning system.[132] To increase the processing capacity, the drillship Discoverer Clear Leader and the floating production, storage and offloading (FPSO) vessel Helix Producer 1 were added, offloading oil with tankers Evi Knutsen, and Juanita.[133][134] Each tanker has capacity of 750,000 barrels (32,000,000 US gallons; 119,000 cubic metres).[132] In addition, FPSO Seillean, and well testing vessel Toisa Pisces would process oil. They are offloaded by shuttle tanker Loch Rannoch.[132]
On July 5, BP announced that its one-day oil recovery effort accounted for about 25,000 barrels of oil, and the flaring off of 57.1 million cubic feet (1.62×10^6 m3) of natural gas. The total oil collection to date for the spill was estimated at 660,000 barrels.[135] The government's estimates suggested the cap and other equipment were capturing less than half of the oil leaking from the sea floor as of late June.[82]
On July 10, the containment cap was removed to replace it with a better-fitting cap consisting of a Flange Transition Spool and a 3 Ram Stack ("Top Hat Number 10").[136][137] On July 15 BP tested the well integrity by shutting off pipes that were funneling some of the oil to ships on the surface, so the full force of the gusher from the wellhead went up into the cap.[138][139] That same day, BP said that the leak had been stopped after all the blowout preventer valves had been closed on the newly-fitted cap.[140]
[edit] Considerations of using explosives
In mid-May, United States Secretary of Energy Steven Chu assembled a team of nuclear physicists, including hydrogen bomb designer Richard Garwin and Sandia National Laboratories director Tom Hunter.[141] On May 24 BP ruled out conventional explosives, saying that if blasts failed to clog the well, "We would have denied ourselves all other options."[142]
[edit] Permanent closure
Transocean's Development Driller III started drilling a first relief well on May 2 and was at 13,978 feet (4,260 m) out of 18,000 feet (5,500 m) as of June 14. GSF Development Driller II started drilling a second relief on May 16 and was halted at 8,576 feet (2,614 m) out of 18,000 feet (5,500 m) as of June 14 while BP engineers verified the operational status of the second relief well's blowout preventer.[143][144][145][146][147][148] Each relief well is expected to cost about $100 million.[149][150]
Starting at 15:00 CDT on August 3, first test oil and then drilling mud was pumped at a slow rate of approximately two barrels/minute into the well-head. Pumping continued for eight hours, at the end of which time the well was declared to be "in a static condition."[151] At 09:15 CDT on August 4, with Adm. Allen's approval, BP began pumping cement from the top, sealing that part of the flow channel permanently.[152]
On August 4, Allen said the static kill was working.[153] Two weeks later, though, Allen said it was uncertain when the well could be declared completely sealed. The bottom kill had yet to take place, and the relief well had been delayed by storms. Even when the relief well was ready, he said, BP had to make sure pressure would not build up again.[154] On August 19, Allen said that some scientists believe it is possible that a collapse of rock formations has kept the oil from continuing to flow and that the well might not be permanently sealed.[155] The U.S. government wants the failed blowout preventer to be replaced in case of any pressure that occurs when the relief well intersects with the well.[156] On September 3 at 1:20 p.m. CDT the 300 ton failed blowout preventer was removed from the well and began being slowly lifted to the surface.[156] Later that day a replacement blowout preventer was placed on the well.[157] On September 4 at 6:54 p.m. CDT the failed blowout preventer reached the surface of the water and at 9:16 p.m. CDT it was placed in a special container on board the vessel Helix Q4000.[157] The failed blowout preventer will be taken to a NASA facility in Louisiana for examination.[157]
On September 10, Allen said the bottom kill could start sooner than expected because a "locking sleeve" could be used on top of the well to prevent excessive pressure from causing problems. BP said the relief well was about 50 feet from the intersection, and finishing the boring would take four more days.[158] On September 16, the relief well reached its destination and pumping of cement to seal the well began.[159]
On September 19, 2010, BP effectively killed the Macondo Well five months after the April 20th explosion.[160] The relief well being drilled intersected the blown-out well Thursday September 16, and crews started pumping in cement on Friday September 17 to permanently plug it. Retired Coast Guard Adm. Thad Allen said, BP's well was "effectively dead."[160] Allen said a pressure test to ensure the cement plug would hold was completed at 5:54 a.m. CDT. He added, "Additional regulatory steps will be undertaken but we can now state definitively that the Macondo Well poses no continuing threat to the Gulf of Mexico".[160]
[edit] Efforts to protect the coastline and marine environments
The three fundamental strategies for addressing spilled oil were to; contain it on the surface, away from the most sensitive areas, to dilute and disperse it into less sensitive areas, and to remove it from the water. The Deepwater response employed all three strategies, using a variety of techniques. While most of the oil drilled off Louisiana is a lighter crude, the leaking oil was of a heavier blend which contained asphalt-like substances. According to Ed Overton, who heads a federal chemical hazard assessment team for oil spills, this type of oil emulsifies well. Once it becomes emulsified, it no longer evaporates as quickly as regular oil, does not rinse off as easily, cannot be eaten by microbes as easily, and does not burn as well. "That type of mixture essentially removes all the best oil clean-up weapons", Overton said.[161]
On May 6, BP began documenting the daily response efforts on its web site.[162] While these efforts began using only BP's resources, on April 28 Doug Suttles, chief operating officer, welcomed the US military as it joined the cleanup operation.[45] The response increased in scale as the spill volume grew. Initially BP employed remotely operated underwater vehicles, 700 workers, four airplanes and 32 vessels.[40] By April 29, 69 vessels including skimmers, tugs, barges and recovery vessels were active in cleanup activities. On May 4 the US Coast Guard estimated that 170 vessels, and nearly 7,500 personnel were participating, with an additional 2,000 volunteers assisting.[163] On May 26, all 125 commercial fishing boats helping in the clean up were ordered ashore after some workers began experiencing health problems.[164] On May 31, BP set up a call line to take cleanup suggestions which received 92,000 responses by late June, 320 of which were categorized as promising.[165]
[edit] Containment
The response included deploying many miles of containment boom, whose purpose is to either corral the oil, or to block it from a marsh, mangrove, shrimp/crab/oyster ranch or other sensitive area. Booms extend 18–48 inches (0.46–1.2 m) above and below the water surface and are effective only in relatively calm and slow-moving waters. More than 100,000 feet (30 km) of containment booms were initially deployed to protect the coast and the Mississippi River Delta.[150] By the next day, that nearly doubled to 180,000 feet (55 km), with an additional 300,000 feet (91 km) staged or being deployed.[166][167]
Some US lawmakers and local officials[who?] claimed that the booms didn't work as intended, saying there is more shoreline to protect than lengths of boom to protect it and that inexperienced operators didn't lay the boom correctly. Billy Nungesser, president of Plaquemines Parish, Louisiana, said the boom "washes up on the shore with the oil, and then we have oil in the marsh, and we have an oily boom. So we have two problems”.[168]
[edit] Barrier island plan
Main article: Louisiana barrier island planOn May 21, Plaquemines Parish president Billy Nungesser publicly complained about the federal government's hindrance of local mitigation efforts. State and local officials had proposed building sand berms off the coast to catch the oil before it reached the wetlands, but the emergency permit request had not been answered for over two weeks. The following day Nungesser complained that the plan had been vetoed, while Army Corps of Engineers officials said that the request was still under review.[169] Gulf Coast Government officials released water via Mississippi River diversions in an effort to create an outflow of water that would keep the oil off the coast. The water from these diversions comes from the entire Mississippi watershed. Even with this approach, on May 23, the National Oceanic and Atmospheric Administration predicted a massive landfall to the west of the Mississippi River at Port Fourchon.[170] On May 23 Louisiana Attorney General Buddy Caldwell wrote to Lieutenant General Robert L. Van Antwerp of the US Army Corps of Engineers, stating that Louisiana had the right to dredge sand to build barrier islands to keep the oil spill from its wetlands without the Corps' approval, as the 10th Amendment to the U.S. Constitution prevents the federal government from denying a state the right to act in an emergency.[171][172][173] He also wrote that if the Corps "persists in its illegal and ill-advised efforts" to prevent the state from building the barriers that he would advise Louisiana Governor Bobby Jindal to build the berms and challenge the Corps in court.[174] On June 3 BP said barrier projects ordered by Adm. Thad Allen would cost $360 million.[175] On June 16 Great Lakes Dredge and Dock Company under the Shaw Environmental and Infrastructure Group began constructing sand berms off the Louisiana coast.[176]
By late October, the state of Louisiana had spent $240 million of the proposed $360 million from BP. The barrier had captured an estimated 1,000 barrels of oil, but critics and experts say the barrier is purely symbolic and call it "an exercise in futility" given the estimated five million barrels of oil in the gulf and the millions of dollars and man hours used to build the barrier. Many scientists say the remaining oil in the Gulf is far too dispersed to be blocked or captured by the sand structures. “It certainly would have no impact on the diluted oil, which is what we’re talking about now,” said Larry McKinney, head of the Gulf of Mexico research center at Texas A&M University. “The probability of their being effective right now is pretty low.”[177]
On December 16, a report by a presidential commission called the berms project "underwhelmingly effective, overwhelmingly expensive" because little oil appeared on the berms. However, the commission admitted the berm might help with reversing the effects of erosion on the coast. Jindal called the report "partisan revisionist history at taxpayer expense".[178]
[edit] Dispersal
Spilled oil naturally disperses via storms, currents, and osmosis with the passage of time. Chemical dispersants accelerate the dispersal process, although they may have significant side-effects. Corexit EC9500A and Corexit EC9527A have been the principal dispersants employed.[179] These contain propylene glycol, 2-Butoxyethanol and dioctyl sodium sulfosuccinate.[180][181] 2-butoxyethanol was identified as a causal agent in the health problems experienced by cleanup workers after the 1989 Exxon Valdez oil spill.[181] Warnings from the Hazardous Substance Fact Sheet for 2-Butoxyethanol include "Cancer Hazard: 2-Butoxy Ethanol may be a carcinogen in humans since it has been shown to cause liver cancer in animals. Many scientists believe there is no safe level of exposure to a carcinogen" and "Reproductive Hazard: 2-Butoxy Ethanol may damage the developing fetus. There is limited evidence that 2-Butoxy Ethanol may damage the male reproductive system (including decreasing the sperm count) in animals and may affect female fertility in animals".[182]
Corexit manufacturer Nalco states, "[COREXIT 9500] is a simple blend of six well-established, safe ingredients that biodegrade, do not bioaccumulate and are commonly found in popular household products....COREXIT products do not contain carcinogens or reproductive toxins. All the ingredients have been extensively studied for many years and have been determined safe and effective by the EPA".[183] However, according to the OSHA-required Material Safety Data Sheets (MSDSs) for both versions of Corexit used in the Gulf,[184][184] "Component substances have a potential to bioconcentrate" (or bioaccumulate), defined by the EPA as "accumulation of a chemical in tissues of a fish or other organism to levels greater than in the surrounding medium", meaning these substances move up the food chain. The data sheets further state: "No toxicity studies have been conducted on this product".[185]
Corexit EC9500A and EC9527A are neither the least toxic, nor the most effective, among the Environmental Protection Agency approved dispersants.[186] They are also banned from use on oil spills in the United Kingdom.[187] Twelve other products received better toxicity and effectiveness ratings, but BP says it chose to use Corexit because it was available the week of the rig explosion.[186][188] Critics contend that the major oil companies stockpile Corexit because of their close business relationship with its manufacturer Nalco.[186][189]
On May 1, two military C-130 Hercules aircraft were employed to spray oil dispersant.[190] On May 7, Secretary Alan Levine of the Louisiana Department of Health and Hospitals, Louisiana Department of Environmental Quality Secretary Peggy Hatch, and Louisiana Department of Wildlife and Fisheries Secretary Robert Barham sent a letter to BP outlining their concerns related to potential dispersant impact on Louisiana's wildlife and fisheries, environment, aquatic life, and public health. Officials requested that BP release information on their dispersant effects.[191] The Environmental Protection Agency later approved the injection of dispersants directly at the leak site, to break up the oil before it reaches the surface, after three underwater tests.[192] Independent scientists suggest that underwater injection of Corexit into the leak might be responsible for the oil plumes discovered below the surface.[188] However, National Oceanic and Atmospheric Administration administrator Jane Lubchenco said that there was no information supporting this conclusion, and indicated further testing would be needed to ascertain the cause of the undersea oil clouds.[188] By July 12, BP had reported applying 1,070,000 US gallons (4,100,000 l) of Corexit on the surface and 721,000 US gallons (2,730,000 l) underwater (subsea).[193] The same document listed available stocks of Corexit which decreased by over 965,000 US gallons (3,650,000 l) without reported application, suggesting either stock diversion or unreported application. Under reported subsea application of 1,690,000 US gallons (6,400,000 l) would account for this discrepancy. Given the suggested dispersant to oil ratio between 1:10 and 1:50, the possible use of 1,690,000 US gallons (6,400,000 l) in subsea application could be expected to suspend between 400,000 to 2M barrels of oil below the surface of the Gulf.
On May 19, the Environmental Protection Agency gave BP 24 hours to choose less toxic alternatives to Corexit from the list of dispersants on the National Contingency Plan Product Schedule, begin applying the new dispersant(s) within 72 hours of Environmental Protection Agency approval or provide a detailed reasoning why the approved products did not meet the required standards.[194][195] On May 20 US Polychemical Corporation reportedly received an order from BP for its Dispersit SPC 1000 dispersant. US Polychemical said it could produce 20,000 US gallons (76,000 l) a day in the first few days, increasing up to 60,000 US gallons (230,000 L) a day thereafter.[196] Also on May 20, BP determined that none of the alternative products met all three criteria of availability, toxicity and effectiveness.[197] On 24 May, Environmental Protection Agency administrator Jackson ordered the Environmental Protection Agency to conduct its own evaluation of alternatives and ordered BP to scale back dispersant use.[198][199] According to analysis of daily dispersant reports provided by the Deepwater Horizon Unified Command, prior to May 26 BP used 25,689 US gallons (97,240 l; 21,391 imp gal) a day of Corexit. After the EPA directive, the daily average of dispersant use dropped to 23,250 US gallons (88,000 l; 19,360 imp gal) a day, a 9% decline.[200] By July 30, more than 1.8 million gallons (6.8 million liters) of dispersant had been used, mostly Corexit 9500.[201]
On July 31, Rep. Edward Markey, Chairman of the House Energy and Environment Subcommittee, released a letter sent to National Incident Commander Thad Allen, and documents revealing that the U.S. Coast Guard repeatedly allowed BP to use excessive amounts of the dispersant Coexit on the surface of the ocean. Markey's letter, based on an analysis conducted by the Energy and Environment Subcommittee staff, further showed that by comparing the amounts BP reported using to Congress to the amounts contained in the company’s requests for exemptions from the ban on surface dispersants it submitted to the Coast Guard, that BP often exceeded its own requests, with little indication that it informed the Coast Guard or that the Coast Guard attempted to verify whether BP was exceeding approved volumes. “Either BP was lying to Congress or to the Coast Guard about how much dispersants they were shooting onto the ocean,” said Rep. Markey.[202]
On August 2, the EPA said dispersants did no more harm to the environment than the oil itself, and that they stopped a large amount of oil from reaching the coast by making the oil break down faster.[203] However, independent scientists and EPA's own experts continue to voice concerns regarding the use of dispersants.[204]
Dispersant use was said to have stopped after the cap was in place.[203] Marine toxicologist Riki Ott wrote an open letter to the EPA in late August with evidence that dispersant use had not stopped and that it was being administered near shore.[205] Independent testing supported her claim. New Orleans-based attorney Stuart Smith, representing the Louisiana-based United Commercial Fisherman’s Association and the Louisiana Environmental Action Network said he “personally saw C-130s applying dispersants from [his] hotel room in the Florida Panhandle. They were spraying directly adjacent to the beach right at dusk. Fishermen I’ve talked to say they’ve been sprayed. This idea they are not using this stuff near the coast is nonsense.” [206]
[edit] Use of dispersants deep under water
Some 1,100,000 US gallons (4,200,000 l) of chemical dispersants were sprayed at the wellhead five thousand feet under the sea.[207] This had never previously been tried but due to the unprecedented nature of this spill, BP along with the U.S. Coast Guard and the Environmental Protection Agency, decided to use "the first subsea injection of dispersant directly into oil at the source".[208]
Dispersants are said to facilitate the digestion of the oil by microbes. Mixing the dispersants with the oil at the wellhead would keep some oil below the surface and in theory, allow microbes to digest the oil before it reached the surface. Various risks were identified and evaluated, in particular that an increase in the microbe activity might reduce the oxygen in the water. Various models were run and the effects of the use of the dispersants was monitored closely. The use of dispersants at the wellhead was pursued and the National Oceanic and Atmospheric Administration (NOAA) estimated that roughly 409,000 barrels of oil were dispersed underwater.[209]
Environmental scientists say the dispersants, which can cause genetic mutations and cancer, add to the toxicity of the spill and that sea turtles and bluefin tuna are exposed to an even greater risk than crude alone. According to them, the dangers are even greater for dispersants poured into the source of the spill, where they are picked up by the current and wash through the Gulf.[210] University of South Florida scientists released preliminary results on the toxicity of microscopic drops of oil in the undersea plumes, finding that they may be more toxic than previously thought. The researchers say the dispersed oil appears to be having a toxic effect on bacteria and phytoplankton - the microscopic plants which make up the basis of the Gulf's food web. The field-based results were consistent with shore-based laboratory studies showing that phytoplankton are more sensitive to chemical dispersants than the bacteria, which are more sensitive to oil.[211] On the other hand, the NOAA says that toxicity tests have suggested that the acute risk of dispersant-oil mixtures is no greater than that of oil alone.[209] However, some experts believe that all the benefits and costs may not be known for decades.[209]
Because the dispersants were applied deep under the sea, much of the oil never rose to the surface — which means it went somewhere else, said Robert Diaz, a marine scientist at the College of William and Mary in Williamsburg, Va. "The dispersants definitely don't make oil disappear. They take it from one area in an ecosystem and put it in another," Diaz said.[207] One plume of dipersed oil has been that measured at 22 miles (35 km) long, more than a mile wide and 650 feet (200 m) tall. The plume shows the oil "is persisting for longer periods than we would have expected," said researchers with the Woods Hole Oceanographic Institution. "Many people speculated that subsurface oil droplets were being easily biodegraded. Well, we didn’t find that. We found it was still there".[212] In a major study on the plume, experts found the most worrisome part to be the slow pace at which the oil is breaking down in the cold, 40 °F (4 °C) water at depths of 3,000 feet (910 m) 'making it a long-lasting but unseen threat to vulnerable marine life'.[213] In September, Marine Sciences at the University of Georgia reported findings of a substantial layer of oily sediment stretching for dozens of miles in all directions from the capped well.[110]
[edit] Removal
Three basic approaches to removing the oil from the water have been burning the oil, filtering off-shore, and collecting for later processing. On April 28, the US Coast Guard announced plans to corral and burn off up to 1000 barrels of oil each day. It tested how much environmental damage a small, controlled burn of 100 barrels did to surrounding wetlands, but could not proceed with an open ocean burn due to poor conditions.[166][214]
BP stated that more than 215,000 barrels of oil-water mix had been recovered by May 25.[65] In mid June, BP ordered 32 machines that separate oil and water with each machine capable of extracting up to 2000 barrels per day,[215][216] BP agreed to use the technology after testing machines for one week.[217] By June 28, BP had successfully removed 890,000 barrels of oily liquid and burned about 314,000 barrels of oil.[218]
More recently the EPA reported that there were sucessful attempts made to contain the environmental impact of the oil spill, in which the Unified Command used the "situ burning" method to burn off the oil in controlled environments on the surface of the ocean to try and limit the environmental damages on the ocean as well as the shorelines. 411 controlled burn events took place, of which 410 could be quantified. Burning off an estimated 9.3 to 13.1 million gallons (220,000 to 310,000 barrels) on the ocean surface.[219]
The Environmental Protection Agency prohibited the use of skimmers that left more than 15 parts per million of oil in the water. Many large-scale skimmers were therefore unable to be used in the cleanup because they exceed this limit.[220] An urban myth developed that the U.S. government declined the offers because of the requirements of the Jones Act.[221] This proved untrue and many foreign assets deployed to aid in cleanup efforts.[222] The Taiwanese supertanker A Whale, recently retrofitted as a skimmer, was tested in early July but failed to collect a significant amount of oil.[223] According to Bob Grantham, a spokesman for shipowner TMT, this was due to BP's use of chemical dispersants.[224] The Coast Guard said 33 million gallons (790,000 barrels) of tainted water had been recovered, with 5 million gallons (120,000 barrels) of that consisting of oil. An estimated 11 million gallons (260,000 barrels) of oil were burned. BP said 826,000 barrels (131,300 m3) had been recovered or flared. The National Oceanic and Atmospheric Administration (NOAA) estimated that about 25% of the oil had been removed from the Gulf. The table below presents the NOAA estimates based on an estimated release of 4.9 million barrels (780×10^3 m3) of oil (the category "chemically dispersed" includes dispersal at the surface and at the wellhead; "naturally dispersed" was mostly at the wellhead; "residual" is the oil remaining as surface sheen, floating tarballs, and oil washed ashore or buried in sediment). However, there is plus/minus 10% uncertainty in the total volume of the oil spill.[225] [226]
Two months after these numbers were released Carol Browner, director of the White House Office of Energy and Climate Change Policy, said they were "never meant to be a precise tool" and that the data "was simply not designed to explain, or capable of explaining, the fate of the oil... oil that the budget classified as dispersed, dissolved, or evaporated is not necessarily gone".[227]
Category Estimate Alternative 1 Alternative 2 Direct recovery from wellhead 17% 17% 17% Burned at the surface 5% 5% 5% Skimmed from the surface 3% 3% 3% Chemically dispersed 8% 10% 6% Naturally dispersed 16% 20% 12% Evaporated or dissolved 25% 32% 18% Residual remaining 26% 13% 39% Based on these estimates, up to 75 percent of the oil from BP's Gulf oil disaster still remains in the Gulf environment, according to Christopher Haney, chief scientist for Defenders of Wildlife, who called the government report's conclusions misleading. Haney said. "Terms such as 'dispersed,' 'dissolved' and 'residual' do not mean gone. That's comparable to saying the sugar dissolved in my coffee is no longer there because I can't see it. By Director Lubchenco's own acknowledgment, the oil which is out of sight is not benign. Whether buried under beaches or settling on the ocean floor, residues from the spill will remain toxic for decades."[228]
Appearing before Congress, Bill Lehr, a senior scientist at NOAA's Office of Response and Restoration, defended a report written by the National Incident Command (NIC) on the fate of the oil. This report relied on numbers generated by government and non-government oil spill experts, using an Oil Budget Calculator (OBC) developed for this spill. Based upon the OBC, Lehr said 6% was burned and 4% was skimmed but he could not be confident of numbers for the amount collected from beaches. As seen in the table above, he pointed out that much of the oil has evaporated or been dispersed or dissolved into the water column. Under questioning from congressman Ed Markey, Lehr agreed that the report said the amount of oil that went into the Gulf was 4.1m barrels, noting that 800,000 barrels were siphoned off directly from the well.
NOAA has been criticized by some independent scientists and Congress for the report's conclusions and for failing to explain how the scientists arrived at the calculations detailed in the table above. A formally peer reviewed report documenting the OBC is scheduled for release in early October.[229] Markey told Lehr the NIC report had given the public a false sense of confidence. "You shouldn't have released it until you knew it was right," he said. Ian MacDonald, an ocean scientist at Florida State University, claims the NIC report "was not science". He accused the White House of making "sweeping and largely unsupported" claims that three-quarters of the oil in the Gulf was gone. "I believe this report is misleading," he said. "The imprint will be there in the Gulf of Mexico for the rest of my life. It is not gone and it will not go away quickly."[230]
By late July 2010, two weeks after the flow of oil had stopped, oil on the surface of the Gulf had largely dissipated. Concern still remains for underwater oil and ecological damage.[231]
In August, scientists had determined as much as 79 percent of the oil remains in the Gulf of Mexico, under the surface.[232]
[edit] Oil eating microbes
In August a study of bacterial activity in the Gulf led by Terry Hazen of the Lawrence Berkeley National Laboratory, found a previously unknown bacterial species and reported in the journal Science that it was able to break down the oil without depleting oxygen levels. [233] Hazen’s interpretation had its skeptics. John Kessler, a chemical oceanographer at Texas A&M University says “what Hazen was measuring was a component of the entire hydrocarbon matrix,” which is a complex mix of literally thousands of different molecules. Although the few molecules described in the new paper in Science may well have degraded within weeks, Kessler says, “there are others that have much longer half-lives — on the order of years, sometimes even decades.”[234] He noted that the missing oil has been found in the form of large oil plumes, one the size of Manhattan, which do not appear to be biodegrading very fast.[235]
By mid-September, research showed these microbes mainly digested natural gas spewing from the wellhead - propane, ethane and butane - rather than oil, according to a subsequent study published in the journal Science.[236] David L. Valentine, a professor of microbial geochemistry at UC Santa Barbara, said that the oil-gobbling properties of the microbes had been grossly overstated.[237]
Some experts have suggested that the proliferation of the bacteria may be causing health issues for residents of the Gulf Coast. Marine toxicologist Riki Ott says that the bacteria, some of which have been genetically modified, or otherwise bio-engineered to better eat the oil, might be responsible for an outbreak of mysterious skin rashes noted by Gulf physicians.[237][238]
[edit] Consequences
[edit] Ecology
The spill is the 'worst environmental disaster the US has faced', according to White House energy adviser Carol Browner.[239] Factors such as petroleum toxicity, oxygen depletion and the use of Corexit dispersant are thought to be the main causes of damage.[240][241] Eight U.S. national parks are threatened.[242] More than 400 species that live in the Gulf islands and marshlands are at risk, including the endangered Kemp's Ridley turtle, the Green Turtle, the Loggerhead Turtle, the Hawksbill Turtle, and the Leatherback Turtle. In the national refuges most at risk, about 34,000 birds have been counted, including gulls, pelicans, roseate spoonbills, egrets, terns, and blue herons.[65] A comprehensive 2009 inventory of offshore Gulf species counted 15,700. The area of the oil spill includes 8,332 species, including more than 1,200 fish, 200 birds, 1,400 molluscs, 1,500 crustaceans, 4 sea turtles, and 29 marine mammals.[243][244]
As of November 2, 6,814 dead animals had been collected, including 6,104 birds, 609 sea turtles, 100 dolphins and other mammals, and 1 reptile.[245][246] According to the U.S. Fish and Wildlife Service, cause of death had not been determined as of late June. Also, dolphins have been seen which are lacking food, and "acting drunk" apparently due to the spill.[247] A Mother Jones reporter kayaking in the area of Grand Isle reported seeing about 60 dolphins blowing oil through their blow holes as they swam through oil-slick waters.[248]
Duke University marine biologist Larry Crowder said threatened loggerhead turtles on Carolina beaches could swim out into contaminated waters. Ninety percent of North Carolina's commercially valuable sea life spawn off the coast and could be contaminated if oil reaches the area. Douglas Rader, a scientist for the Environmental Defense Fund, said prey could be negatively affected as well. Steve Ross of UNC-Wilmington said coral reefs could be smothered.[249] In early June Harry Roberts, a professor of Coastal Studies at Louisiana State University, stated that 4 million barrels (170,000,000 US gallons; 640,000 cubic metres) of oil would be enough to "wipe out marine life deep at sea near the leak and elsewhere in the Gulf" as well as "along hundreds of miles of coastline." Mak Saito, an Associate Scientist at Woods Hole Oceanographic Institution in Massachusetts indicated that such an amount of oil "may alter the chemistry of the sea, with unforeseeable results."[250] Samantha Joye of the University of Georgia indicated that the oil could harm fish directly, and microbes used to consume the oil would also reduce oxygen levels in the water.[251] According to Joye, the ecosystem could require years or even decades to recover, as previous spills have done.[252] Oceanographer John Kessler estimates that the crude gushing from the well contains approximately 40% methane, compared to about 5% found in typical oil deposits.[253] Methane could potentially suffocate marine life and create dead zones where oxygen is depleted.[253] Also oceanographer Dr. Ian MacDonald at Florida State University believes that the natural gas dissolving below the surface has the potential to reduce the Gulf oxygen levels and emit benzene and other toxic compounds.[62][254] In early July, researchers discovered two new previously unidentified species of bottom-dwelling pancake batfish of the Halieutichthys genus, in the area affected by the oil spill.[255] Damage to the ocean floor is as yet unknown.[226]
In late July, Tulane University scientists found signs of an oil-and-dispersant mix under the shells of tiny blue crab larvae in the Gulf, indicating that the use of dispersants has broken up the oil into droplets small enough they can easily enter the food chain. Marine biologists from the University of Southern Mississippi's Gulf Coast Research Laboratory began finding orange blobs under the shells of crab larvae in May, and reportedly continue to find them "in almost all" of the larvae they collect from over 300 miles (480 km) of coastline stretching from Grand Isle, Louisiana, to Pensacola, Florida.[241]
On September 29 Oregon State University researchers announced the oil spill waters contain carcinogens. The team had found sharply heightened levels of chemicals in the waters off the coast of Louisiana in August, the last sampling date, even after BP successfully capped its well in mid-July. Near Grand Isle, Louisiana, the team discovered that polycyclic aromatic hydrocarbons or PAHs, which are often linked to oil spills and include carcinogens and chemicals that pose various risks to human health, remained at levels 40 times higher than before the oil spill. Researchers said the compounds may enter the food chain through organisms like plankton or fish. The PAH chemicals are most concentrated in the area near the Louisiana Coast, but levels have also jumped 2 to 3 fold in other spill-affected areas off Alabama, Mississippi and Florida. As of August, PAH levels remained near those discovered while the oil spill was still flowing heavily.[256] Kim Anderson, an OSU professor of environmental and molecular toxicology, said that based on the findings of other researchers, she suspects that the abundant use of dispersants by BP increased the bioavailability of the PAHs in this case. "There was a huge increase of PAHs that are bio-available to the organisms -- and that means they can essentially be uptaken by organisms throughout the food chain." Anderson added that exactly how many of these toxic compounds actually ended up in the food chain was beyond her area of research.[257]
On October 22, it was reported that miles-long strings of weathered oil had been sighted moving toward marshes on the Mississippi river delta. Hundreds of thousands of migrating ducks and geese spend the winter in this delta.[258]
Researchers reported in early November that toxic chemicals at levels high enough to kill sea animals extended deep underwater soon after the BP oil spill. Terry Wade of Texas A&M University, Steven Lohrenz of the University of Southern Mississippi and Stennis Space Center found evidence of the chemicals as deep as 3,300 feet and as far away as 8 miles in May, and say the spread likely worsened as more oil spilled. The chemicals (PAHs), they said, can kill animals right away in high enough concentrations and can cause cancer over time. "From the time that these observations were made, there was an extensive release of additional oil and dispersants at the site. Therefore, the effects on the deep sea ecosystem may be considerably more severe than supported by the observations reported here," the researchers wrote in the journal Geophysical Research Letters. They added that PAHs include a group of compounds, and different types were at different depths, and said "It is possible they dissipate quickly, but no one has yet showed this".[259]
In early November 2010, federally-funded scientists found damage to deep sea coral several miles from BP's Macondo well. While tests are needed to verify that the coral died from the well, expedition leader Charles Fisher, a biologist with Penn State University, said, "There is an abundance of circumstantial data that suggests that what happened is related to the recent oil spill." According to the Associated Press, this discovery indicated that the spill's ecological consequences may be greater than what officials have said. Previous federal teams have stated that they found no damage on the ocean floor.[260] "We have never seen anything like this," Fisher added. "The visual data for recent and ongoing death are crystal clear and consistent over at least 30 colonies; the site is close to the Deepwater Horizon; the research site is at the right depth and direction to have been impacted by a deep-water plume, based on NOAA models and empirical data; and the impact was detected only a few months after the spill was contained."[261]
A Coast Guard report released on December 17 said that little oil remained on the sea floor except within a mile and a half of the well. The report said that since August 3, only 1 percent of water and sediment samples had pollution above EPA-recommended limits. Charlie Henry of NOAA warned even small amounts of oil could cause "latent, long-term chronic effects". And Ian R. MacDonald of Florida State University said even where the government claimed to find little oil, "We went to the same place and saw a lot of oil. In our samples, we found abundant dead animals."[262]
[edit] Fisheries
In BP's Initial Exploration Plan, dated March 10, 2009, they said that "it is unlikely that an accidental spill would occur" and "no adverse activities are anticipated" to fisheries or fish habitat.[38] On April 29, 2010, Louisiana Governor Bobby Jindal declared a state of emergency in the state after weather forecasts predicted the oil slick would reach the Louisiana coast.[263] An emergency shrimping season was opened on April 29 so that a catch could be brought in before the oil advanced too far.[264] By April 30 the Coast Guard received reports that oil had begun washing up to wildlife refuges and seafood grounds on the Louisiana Gulf Coast.[265] On May 22 The Louisiana Seafood Promotion and Marketing Board stated said 60 to 70% of oyster and blue crab harvesting areas and 70 to 80% of fin-fisheries remained open.[266] The Louisiana Department of Health and Hospitals closed an additional ten oyster beds on May 23, just south of Lafayette, Louisiana, citing confirmed reports of oil along the state's western coast.[267]
On May 2 the National Oceanic and Atmospheric Administration closed commercial and recreational fishing in affected federal waters between the mouth of the Mississippi River and Pensacola Bay. The closure initially incorporated 6,814 square miles (17,650 km2).[268][269] By June 21 National Oceanic and Atmospheric Administration had increased the area under closure over a dozen times, encompassing by that date 86,985 square miles (225,290 km2), or approximately 36% of Federal waters in the Gulf of Mexico, and extending along the coast from Atchafalaya Bay, Louisiana to Panama City, Florida.[270][271] On May 24 the federal government declared a fisheries disaster for the states of Alabama, Mississippi and Louisiana.[272] Initial cost estimates to the fishing industry were $2.5 billion.[265]
On June 23, National Oceanic and Atmospheric Administration ended its fishing ban in 8,000 square miles (21,000 km2), leaving 78,597 square miles (203,570 km2) with no fishing allowed,[273] or about one-third of the Gulf. The continued fishing ban helps assure the safety of seafood, and National Oceanic and Atmospheric Administration inspectors have determined that as of July 9, Kevin Griffis of the Commerce Department said, only one seafood sample out of 400 tested did not pass, though even that one did not include "concerning levels of contaminants".[274] On August 10, Jane Lubchenco of NOAA said no one had seen oil in a 8,000 square miles (21,000 km2) area east of Pensacola since July 3, so the fishing ban in that area was being lifted.[275]
On August 31, a Boston lab hired by the United Commercial Fishermen's Association to analyze coastal fishing waters said it found dispersant in a seafood sample taken near Biloxi, Miss., almost a month after BP said it had stopped using the chemical.[276]
According to the European Space Agency, the agency's satellite data was used by the Ocean Foundation to conclude that 20 percent of the juvenile bluefin tuna were killed by oil in the gulf's most important spawning area. The foundation combined satellite data showing the oil spill extent each week with data on weekly tuna spawning to make their conclusion. The agency also said that the loss of juvenile tuna was significant due to the 82% decline of the tuna's spawning stock in the western Atlantic during the 30 years prior to the oil spill.[277]
[edit] Petroleum by-products found in Gulf seafood
A Florida TV station sent frozen Gulf shrimp to be tested for petroleum by-products after recent reports showed scientists disagreed on whether it is safe to eat after the oil spill.[278] A private lab found levels of Anthracene, a toxic hydrocarbon and a by-product of petroleum, at twice the levels the FDA finds acceptable. The scientist who tested the shrimp said based on the results, she would not eat it, and that the results[279] may surprise consumers and shrimpers.[280]
A shrimp boat trawling waters north of the Deep Water Horizon well site hauled in a load of tar balls along with thousands of dollars' worth of shrimp, ruining the catch. The waters had been reopened to fishing on November 15.[281] Due to this catch, on November 24 NOAA re-closed 4,200 square miles of Gulf waters to shrimping.[282]
[edit] Tourism
Although many people cancelled their vacations due to the spill, hotels close to the coasts of Louisiana, Mississippi and Alabama reported dramatic increases in business during the first half of May 2010. However, the increase was likely due to the influx of people who had come to work with oil removal efforts. Jim Hutchinson, assistant secretary for the Louisiana Office of Tourism, called the occupancy numbers misleading, but not surprising. "Because of the oil slick, the hotels are completely full of people dealing with that problem," he said. "They're certainly not coming here as tourists. People aren't sport fishing, they aren't buying fuel at the marinas, they aren't staying at the little hotels on the coast and eating at the restaurants."[283]
On May 25 BP gave Florida $25 million to promote the beaches where the oil had not reached, and the company planned $15 million each for Alabama, Louisiana and Mississippi. The Bay Area Tourist Development Council bought digital billboards showing recent photos from the gulf coast beaches as far north as Nashville, Tennessee and Atlanta. Along with assurances that the beaches were so far unaffected, hotels cut rates and offered deals such as free golf. Also, cancellation policies were changed, and refunds were promised to those where oil may have arrived. However, revenues remain below 2009 levels.[283][284]
The U.S. Travel Association estimated that the economic impact of the oil spill on tourism across the Gulf Coast over a three-year period could exceed approximately $23 billion, in a region that supports over 400,000 travel industry jobs generating $34 billion in revenue annually.[285][286]
On November 1 BP announced plans to spend $78 million to help Louisiana tourism and test and advertise seafood.[287]
[edit] Other economic consequences
On July 5 BP reported that its own expenditures on the oil spill had reached $3.12 billion, including the cost of the spill response, containment, relief well drilling, grants to the Gulf states, claims paid, and federal costs.[288] The United States Oil Pollution Act of 1990 limits BP's liability for non-cleanup costs to $75 million unless gross negligence is proven.[289] BP has said it would pay for all cleanup and remediation regardless of the statutory liability cap. Nevertheless, some Democratic lawmakers are seeking to pass legislation that would increase the liability limit to $10 billion.[290][291] Analysts for Swiss Re have estimated that the total insured losses from the accident could reach $3.5 billion. According to UBS, final losses could be $12 billion.[292] According to Willis Group Holdings, total losses could amount to $30 billion, of which estimated total claims to the market from the disaster, including control of well, re-drilling, third-party liability and seepage and pollution costs, could exceed $1.2 billion.[293]
On June 25 BP's market value reached a 1 year low. The company's total value lost since April 20 was $105 billion. Investors saw their holdings in BP shrink to $27.02, a nearly 54% loss of value in 2010.[294] A month later, the company's loss in market value totalled $60 billion, a 35% decline since the explosion. At that time, BP reported a second-quarter loss of $17 billion, its first loss in 18 years. This includes a one-time $32.2 billion charge, including $20 billion for the fund created for reparations and $2.9 billion in actual costs.[295]
BP announced that it was setting up a new unit to oversee management of the oil spill and its aftermath, to be headed by former TNK-BP chief executive Robert Dudley,[133] who a month later was named CEO of BP.[295]
On October 1, BP pledged as collateral all royalties from the Thunder Horse, Atlantis, Mad Dog, Great White, Mars, Ursa and Na Kika fields in the Gulf of Mexico. At that time, BP also said it had spent $11.2 billion, while the company's London Stock Exchange price reached 439.75 pence, the highest point since May 28.[296]
By the end of September, BP reported that it had spent $11.2 billion. Third-quarter profit of $1.79 billion (compared to $5.3 billion in 2009) showed, however, that BP continues to do well and should be able to pay total costs estimated at $40 billion.[287]
BP gas stations, the majority of which the company does not own, have reported sales off between 10 and 40% due to backlash against the company. Some BP station owners that lost sales say the name should change back to Amoco, while others say after all the effort that went into promoting BP, such a move would be a gamble, and the company should work to restore its image.[297]
Local officials in Louisiana have expressed concern that the offshore drilling moratorium imposed in response to the spill will further harm the economies of coastal communities.[298] The oil industry employs about 58,000 Louisiana residents and has created another 260,000 oil-related jobs, accounting for about 17% of all Louisiana jobs.[298] BP has agreed to allocate $100 million for payments to offshore oil workers who are unemployed due to the six-month moratorium on drilling in the deep-water Gulf of Mexico.[132]
The real estate prices and a number of transactions in the Gulf of Mexico area have decreased significantly since beginning of the oil spill. As a result, area officials want the state legislature to allow property tax to be paid based on current market value, which according to State Rep. Dave Murzin could mean millions of dollars in losses for each county affected.[299]
The Organization for International Investment, a Washington-based advocate for overseas investment into the U.S., warned in early July that the political rhetoric surrounding the disaster is potentially damaging the reputation of all British companies with operations in the U.S.[300] and sparked a wave of U.S. protectionism that has restricted British firms from winning government contracts, making political donations and lobbying.[301]
[edit] Litigation
Main article: Deepwater Horizon litigationBy May 26 over 130 lawsuits relating to the spill had been filed[292] against one or more of BP, Transocean, Cameron International Corporation, and Halliburton Energy Services,[302] although it is considered likely by observers that these will be combined into one court as a multidistrict litigation.[302] By June 17 over 220 lawsuits were filed against BP alone.[303] Because the spill has been largely lingering offshore, the plaintiffs who can claim damages so far are mostly out-of-work fishermen and tourist resorts that are receiving cancellations.[304] The oil company says 23,000 individual claims have already been filed, of which 9,000 have so far been settled.[292] BP and Transocean want the cases to be heard in Houston, seen as friendly to the oil business. Plaintiffs have variously requested the case be heard in Louisiana, Mississippi or Florida.[304] Five New Orleans judges have recused themselves from hearing oil spill cases because of stock ownership in companies involved or other conflicts of interest.[305] BP has retained law firm Kirkland & Ellis to defend most of the lawsuits arising from the oil spill.[306]
[edit] Health consequences
As of May 29, ten oil spill clean-up workers had been admitted to West Jefferson Medical Center in Marrero, Louisiana. All but two had been hospitalized suffering from symptoms emergency room doctors diagnosed as dehydration. At a press briefing about the May 26 medical evacuation of seven crewmembers from Vessels of Opportunity working in the Breton Sound area, Coast Guard Captain Meredith Austin, Unified Command Deputy Incident Commander in Houma, LA, said that air monitoring done in advance of beginning work showed no volatile organic compounds above limits of concern. No respiratory protection was issued, said Austin "because air ratings were taken and there were no values found to be at an unsafe level, prior to us sending them in there."[307]
On June 15, Marylee Orr, Executive Director for Louisiana Environmental Action Network (LEAN),[308] said on MSNBC's Countdown with Keith Olbermann that people along the Gulf Coast were getting very sick, with symptoms of dizziness, vomiting, nausea, headaches, and chest pains, not only from the first responders to the crisis, but residents living along the coast as well. LEAN's director reported that BP had threatened to fire their workers if they used respirators distributed by LEAN, though health and safety officials had not required their use, as they may exacerbate risks of heat exhaustion.[309][310] By June 21, 143 oil spill exposure-related cases had been reported to the Louisiana Department of Health and Hospitals (DHH) since the crisis began; 108 of those cases involved workers in the oil spill clean-up efforts, while thirty-five were reported by the general public.[311]
The Institute of Medicine of the U. S. National Academies held a workshop to assess known health effects of this and previous oil spills and to coordinate epidemiological monitoring and ongoing medical research. The Louisiana state health officer Jimmy Guidry stated that need as: “This is more than a spill. This is ongoing leakage of a chemical, and adding chemicals to stop the chemicals. We're feeling like we're in a research lab."[312][313] On the second day of the meeting the suicide of William Allen Kruse, a charter boat captain working as a BP clean-up worker,[314] intensified previous expert commentary on the current and likely long-term mental health effects of the ongoing crisis. David Abramson, director of research for Columbia's National Center for Disaster Preparedness, noted the increased risk of mental disorders and stress-related health problems.[315][316] On August 10, the Institute of Medicine released a Workshop Summary: Assessing the Effects of the Gulf of Mexico Oil Spill on Human Health.
Chemicals from the oil and dispersant are believed to be the cause of illness reported by people who live along the Gulf of Mexico. According to chemist Bob Naman, the addition of dispersants created an even more toxic substance when mixed with crude oil. According to Naman, poly-aromatic hydrocarbons (PAHs) are making people sick. PAHs contain compounds that have been identified as carcinogenic, mutagenic, and teratogenic. "The dispersants are being added to the water and are causing chemical compounds to become water soluble, which is then given off into the air, so it is coming down as rain, in addition to being in the water and beaches of these areas of the Gulf," Naman said, and added "I’m scared of what I'm finding. These cyclic compounds intermingle with the Corexit dispersant and generate other cyclic compounds that aren’t good. Many have double bonds, and many are on the EPA's danger list. This is an unprecedented environmental catastrophe." Dr. Riki Ott has been working with oil-spill related illness since the Exxon Valdez. She is working in the Gulf and says: "People are already dying from this… I’m dealing with three autopsies' right now. I don’t think we’ll have to wait years to see the effects like we did in Alaska, people are dropping dead now. I know two people who are down to 4.75 per cent of their lung capacity, their heart has enlarged to make up for that, and their esophagus is disintegrating, and one of them is a 16-year-old boy who went swimming in the Gulf."[317][318] According to Mississippi Riverkeeper of the Waterkeeper Alliance, blood samples from eight individuals from Florida (Pensacola) and Alabama, male and female, residents and BP cleanup workers “were analyzed for volatile solvents and all came back with Ethylbenzene and m,p-Xylene in excess of 95th percentile values of 0.11 ppb for ethylbenzene and 0.34 ppb for m,p-Xylene.” The highest concentration value was four times the 95th percentile. “The blood of all three females and five males had chemicals that are found in the BP crude oil”, the report went on to say.[319]
[edit] U.S. and Canadian offshore drilling policies
Main articles: United States offshore drilling debate and 2010 U.S. Deepwater Drilling MoratoriumAfter the Deepwater Horizon explosion a six-month offshore drilling (below 500 feet (150 m) of water) moratorium was enforced by the United States Department of the Interior.[320] Secretary of the Interior Ken Salazar ordered immediate inspections of all deep-water operations in the Gulf of Mexico. An Outer Continental Shelf safety review board within the Department of the Interior is to provide recommendations for conducting drilling activities in the Gulf.[149] The moratorium suspended work on 33 rigs.[320] It was challenged by several drilling and oil services companies. On June 22, a United States federal judge on the United States District Court for the Eastern District of Louisiana Martin Leach-Cross Feldman when ruling in the case Hornbeck Offshore Services LLC v. Salazar, lifted the moratorium finding it too broad, arbitrary and not adequately justified.[320] The Department of Justice appealed to the 5th Circuit Court of Appeals, which granted the request for an expedited hearing. A three judge panel is scheduled to hear oral arguments on July 8.[321][322]
On June 30, Salazar said that "he is working very hard to finalize a new offshore drilling moratorium".[323] Michael Bromwich, the head of the newly created Bureau of Ocean Energy Management, Regulation and Enforcement, said that a record of "bad performance, deadly performance" by an oil company should be considered "a relevant factor" for the government when it decides if that company should be awarded future drilling leases.[323] Representative George Miller plans to introduce to the energy reform bill under consideration in the United States House of Representatives that a company's safety record should factor into leasing decisions. By this amendment he wants to ban BP from leasing any additional offshore area for seven years because of "extensive record of serious worker safety and environmental violations".[324]
On April 28 the National Energy Board of Canada, which regulates offshore drilling in the Canadian Arctic and along the British Columbia Coast, issued a letter to oil companies asking them to explain their argument against safety rules which require same-season relief wells.[325] Five days later, the Canadian Minister of the Environment Jim Prentice said the government would not approve a decision to relax safety or environment regulations for large energy projects.[326] On May 3 California Governor Arnold Schwarzenegger withdrew his support for a proposed plan to allow expanded offshore drilling projects in California.[327][328] On July 8 Florida Governor Charlie Crist called for a special session of the state legislature to draft an amendment to the state constitution banning offshore drilling in state waters, which the legislature rejected on July 20.[329][330]
According to the U.S. Energy Information Administration (EIA), offshore drilling in the Gulf of Mexico accounts for 23.5% of U.S. oil production.[331] The chief argument in the U.S. offshore drilling debate has been to make the United States less dependent on imported oil.[332][333] American dependence on imports grew from 24% in 1970[334] to 66% in 2008.[335]
[edit] Spill response fund
BP initially promised to compensate all those affected. Tony Hayward, BP CEO, stated, "We are taking full responsibility for the spill and we will clean it up and where people can present legitimate claims for damages we will honour them. We are going to be very, very aggressive in all of that."[336]
On June 16, after meeting with President Obama, BP executives agreed to create a $20 billion spill response fund.[132][337][338] BP has said it will pay $3 billion in third quarter of 2010 and $2 billion in fourth quarter into the fund followed by a payment of $1.25 billion per quarter until it reaches $20 billion. In the interim, BP posts its US assets worth $20 billion as bond. The amount of this fund is not a cap on BP's liabilities. For the fund's payments, BP will cut its capital spending budget, sell $10 billion in assets, and drop its dividend.[132][339] The fund will be administered by Kenneth Feinberg.[132][337][338] One aim of the fund will be to minimize lawsuits against the company.[340] According to BP's officials the fund can be used for natural resource damages, state and local response costs and individual compensation but cannot be used for fines or penalties.[132]
After provisions of the Deepwater Horizon Oil Spill Trust were released August 11, it was revealed that the BP Spill Fund may be backed by future drilling revenue, using BP’s production as collateral.[341]
The Gulf Coast Claims Facility began accepting claims on August 23. Kenneth Feinberg, the man in charge of the $20 billion fund, has confirmed that BP is paying his salary, but questioned who else should pay it. Feinberg has been asked repeatedly to reveal his salary. In late July, he stated that he will disclose the salary BP is paying him, after initially declining to do so.[342] In mid-August he said he would disclose the amount "probably next month" but insists that he is not beholden to BP.[343] However, in early October he had not yet divulged the information as promised and when asked, declined to say how much he is being paid, only that it is a flat fee "totally unrelated" to the size of the fund and amounts paid.[344] On October 8, it was revealed that Feinberg and his law firm have been paid more than $2.5 million from mid-June to October 1.[345]
Feinberg said almost 19,000 claims were submitted in the first week. Of those roughly 1,200 were compensated, totaling about six million dollars, the remainder 'lacked proper paperwork'.[346] Feinberg pointed out that those closest to the spill area were the most likely to receive compensation. Under the new claims facility, claimants can receive between one and six months' compensation without waiving their right to sue; only those who file for and receive a lump-sum payment later in the year will waive their right to litigate.[347] BP had already paid out $375 million, but those who had already filed claims would need to submit a new form.[348] Feinberg stated, "If I haven't found you eligible, no court will find you eligible." Florida Attorney General Bill McCollum disputed Feinberg's statement in a letter.[349]
As of September 8, 50,000 claims, 44,000 of those for lost income, had been filed. Over 10,000 claims had been paid, totaling nearly $80 million.[350] By September 17, about 15,000 claims remained unpaid. The claims were from individuals and businesses that had been fully documented and had already received loss payments from BP. Feinberg acknowledged that he had no excuse for the delay.[351]
By late September Floridians and businesses criticized the claims process, claiming it has gotten worse under Feinberg's leadership, some saying the president and BP "should dump Feinberg if he doesn't get his act together soon".[352] The Obama Administration responded to criticism from Florida officials, including Gov. Charlie Crist and CFO Alex Sink, with a stern letter to Feinberg, saying the present pace of claims is "unacceptable" and directing his office to make whatever changes necessary to move things along. "The Deepwater Horizon Oil Spill has disrupted the lives of thousands upon thousands of individuals, often cutting off the income on which they depend. Many of these individuals and businesses simply do not have the resources to get by while they await processing by the GCCF" associate U.S. Attorney General Thomas Perrelli wrote.[353] One family in Louisiana has been waiting for a month on emergency funds from Feinberg's Gulf Coast Claims Fund, and says for them it is a matter of life and death. "Bills aren't paid, they take my car, they take my insurance, they take my house, and then I can't get him back and forth to dialysis," claims the wife of the former owner of "Lafourche Seafood".[354]
On September 25, Feinberg responded to the complaints in a news release. "Over the past few weeks, I have heard from the people of the Gulf, elected officials, and others that payments remain too slow and not generous enough," Feinberg said. "I am implementing new procedures that will make this program more efficient, more accelerated and more generous." In less than five weeks, the dedicated $20 billion fund that BP set up has paid out over $400 million to more than 30,000 claimants. Funds allocated so far equal 2 percent of the total amount that BP agreed to set aside.[355] Feinberg has denied about 2,000 claims, another 20,000 applications were returned for more financial documentation, and about 15,000 more claims await review. Feinberg has said he’s processing claims at a rate of 1,500 a day.[356]
By early October, denied claims dropped from 528 to 116, as checks were cut and mailed to businesses that were initially told they would get no help. In addition to those still waiting for money, dozens of people say they have received small fractions of the compensation they requested.[344]
By November, BP said it had sent $1.7 billion in checks.[287] About 92,000 claimants had been paid or approved for payment as of Oct. 30. The claims facility declined to reveal the total amount requested by the nearly 315,000 people who have now filed. Denied claims rose dramatically in October; some 20,000 people had been told they have no right to emergency compensation, compared to about 125 denials at the end of September. Others say they are getting mere fractions of what they've lost, while still others received large checks and full payments.[357]
In a letter sent November 20 by the Department of Justice, Associate Attorney General Thomas Perrelli told Kenneth Feinberg that transparency is needed in the claims process so victims can see they're being treated fairly. The DOJ also expressed concerns about the pace of the pay-out process as the interim and final claims begin.[358][359]
Feinberg had said claimants would have to surrender their right to sue BP in order to receive payments beyond emergency disbursements. The deadline to apply for emergency payments expired November 23. But after Gulf residents complained that the emergency payments were so small that they felt pushed into a hurried settlement to get more money, Feinberg made a concession. Under the new rules (beginning November 24 and lasting until August 23, 2013) businesses and individuals may request compensation once a quarter while they decide whether to permanently settle their claim. Still, the claims process has it's critics. Alabama Rep. Jo Bonner asked the Justice Department to investigate the claims facility and to assume direct oversight of the process, saying he had no more trust in the new process than he had in the emergency-payment program. Feinberg had said he would hire his own adjusters, but according to Rep. Bonner, he is still using the same ones as when BP administered the fund. A spokeswoman for Feinberg said the hiring process of new adjusters was under way.[360]
According to BP's law firm, Feinberg's law firm received a total of $3.3 million from BP as of early November. The law firm was paid $850,000 a month since June 2010 and payment of this fee will continue till the end of the year after which the contract will be reviewed.[361]
[edit] Majority of fund to be returned to BP
Feinberg estimates that about $6 billion of the fund will be paid out in claims, including government claims and cleanup costs. He plans to return the remaining $14 Billion to BP once all the settlements are paid out by August 2013.[362]
[edit] Reactions
Main article: Reactions to the Deepwater Horizon oil spillReactions to the oil spill, from various officials and interested parties, ranged from blame and outrage at the damage caused by the spill, and spills in the past, to call for greater accountability on the part of the U.S. government and BP, including new legislation dealing with preventative security and cleanup improvements.
[edit] Investigations
On April 22 the United States Coast Guard and the Minerals Management Service launched an investigation of the possible causes of the explosion.[29] On May 11 the Obama administration requested the National Academy of Engineering conduct an independent technical investigation to determine the root causes of the disaster so that corrective steps could be taken to address the mechanical failures underlying the accident.[363] On May 22 President Obama announced that he had issued Executive Order 13543 establishing the bipartisan National Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling, with former Florida Governor and Senator Bob Graham and former Environmental Protection Agency Administrator William K. Reilly serving as co-chairs. The purpose of the commission is to "consider the root causes of the disaster and offer options on safety and environmental precautions."[364][365] On June 1 U.S. Attorney General Eric Holder announced that he has opened an investigation of the oil spill.[366] According to Holder, the Justice Department is interviewing witnesses as part of a criminal and civil investigation. Besides BP, the investigation could apply to other companies involved in the drilling of the damaged well.[367]
The United States House Committee on Energy and Commerce has conducted a number of hearings. On June 17, CEO of BP Tony Hayward testified before the Committee.[368] The heads of Anadarko and Mitsui's exploration unit will testify before the Committee July 22.[369] In a statement made in June the Committee noted that in a number of cases leading up to the explosion, BP appears to have chosen riskier procedures to save time or money, sometimes against the advice of its staff or contractors.[370]
On April 30, the House Energy and Commerce Committee asked Halliburton to brief it as well as provide any documents it might have related to its work on the Macondo well.[149] Attention has focused on the cementing procedure and the blowout preventer, which failed to fully engage.[371] A number of significant problems have been identified with the blowout preventer: There was a leak in the hydraulic system that provides power to the shear rams. The underwater control panel had been disconnected from the pipe ram, and instead connected to a test ram. The blowout preventer schematic drawings, provided by Transocean to BP, do not correspond to the structure that is on the ocean bottom. The shear rams are not designed to function on the joints where the drill pipes are screwed together or on tools that are passed through the blowout preventer during well construction. The explosion may have severed the communication line between the rig and the sub-surface blowout preventer control unit such that the blowout preventer would have never received the instruction to engage. Before the backup dead man's switch could engage, communications, power and hydraulic lines must all be severed, but it is possible hydraulic lines were intact after the explosion. Of the two control pods for the deadman switch, the one that has been inspected so far had a dead battery.[372] Employee Tyrone Benton told the BBC on June 21 that a leak was spotted on a crucial piece of equipment in the oil rig's blowout preventer weeks before the accident, and that Transocean and BP were emailed about it.[373]
According to the testimony of Doug Brown, the chief mechanic on the Deepwater Horizon, on May 26 at the joint U.S. Coast Guard and Minerals Management Service hearing, a BP representative overruled Transocean employees and insisted on displacing protective drilling mud with seawater just hours before the explosion.[374] One of the BP representatives on the board responsible for making the final decision, Robert Kaluza, refused to testify on the Fifth Amendment grounds that he might incriminate himself; Donald Vidrine, another BP representative, cited medical reasons for his inability to testify, as did James Mansfield, Transocean's assistant marine engineer on board.[375][376][377]
In a June 18 statement, Jim Hackett, the CEO of Anadarko Petroleum Corporation, said research "indicates BP operated unsafely and failed to monitor and react to several critical warning signs during the drilling. ... BP's behavior and actions likely represent gross negligence or willful misconduct."[378] BP responded by strongly disagreeing with the Anadarko statement and said that, despite being contractually liable for sharing clean-up costs, Anadarko is "refusing to accept responsibility for oil spill removal costs and damages".[379] BP has sent Anadarko a bill for $272.2 million; Anadarko is "assessing our contractual remedies".[86]
According to the US Congressional investigation the rig's blowout preventer, a fail-safe device fitted at the base of the well, built by Cameron International Corporation, had a hydraulic leak and a failed battery, and therefore failed.[380] On August 19, Adm. Thad Allen ordered BP to keep the blowout preventer to be used as evidence in any court actions.[155] On the 25th, Harry Thierens, BP’s vice president for drilling and completions, told the hearing that he found that the blowout preventer was connected to a test pipe, rather than the correct one. He said he was "frankly astonished that this could have happened."[381]
In late August, BP released findings from its own own internal probe, which it began immediately after the spill began. BP found that on April 20 managers misread pressure data and gave their approval for rig workers to replace drilling fluid in the well with seawater, which was not heavy enough to prevent gas that had been leaking into the well from firing up the pipe to the rig, causing the explosion. The investigation also questioned why an engineer with BP, team leader overseeing the project, ignored warnings about weaknesses in cement outside the well which could have prevented the gas from escaping. The conclusion was that BP was partly to blame, as was Transocean, which owned the Deepwater Horizon oil rig.[22]
On September 8, BP released a 193-page report on its web site. The report says BP employees and those of Transocean did not correctly interpret a pressure test, and both companies neglected ominous signs such as a pipe called a riser losing fluid. It also says that while BP did not listen to recommendations by Halliburton for more centralizers, the lack of centralizers probably did not affect the cement. The blowout preventer, removed on September 4, had not reached a NASA facility in time for it to be part of the report. Transocean, responding to the report, blamed "BP's fatally flawed well design."[382]
On November 8, the inquiry by the Oil Spill Commission revealed its findings that BP had not sacrificed safety in attempts to make money, but that some decisions had increased risks on the rig.[383] However, the panel said a day later that there had been "a rush to completion" on the well, criticizing poor management decisions. "There was not a culture of safety on that rig," co-chair Bill Reilly said.[384] One of the decisions met with tough questions was that BP refuted the findings of advanced modelling software that had ascertained over three times as many centralizers were needed on the rig. It also decided not to rerun the software when it stuck with only six centralizers, and ignored or misread warnings from other key tests, the panel revealed.[30]
On November 16, an independent 15-member committee released a report stating BP and others, including federal regulators, ignored "near misses". University of Michigan engineering practice professor and committee chairman Donald Winter that sealing the well continued "despite several indications of potential hazard". For example, tests showed the cement was not strong enough to prevent oil and gas from escaping. Also, BP lost drilling materials in the hole.[385] According to Donald Winter, the panel of investigators could not pin the explosion aboard the rig on a single decision made by BP, or anyone else, they found that the companies' focus on speed over safety, given that the well was behind schedule costing BP $1.5 million a day-helped lead to the accident. As Donald Winter told the New York Times, "A large number of decisions were made that were highly questionable and potentially contributed to the blowout of the Macondo well... Virtually all were made in favor of approaches which were shorter in time and lower in cost. That gives us concern that there was not proper consideration of the tradeoffs between cost and schedule and risk and safety."[386] A document obtained by Greenwire, shows BP PLC, Halliburton Co. and Transocean Ltd. made a series of 11 unnecessary decisions that may have increased the chances of disaster. The document outlines 11 specific decisions that BP and its contractors made ahead of the disaster that may have increased risk on the rig. At least nine of the decisions saved time, the document shows, and the majority of the decisions were made by BP personnel on shore. These decisions were most likely made to try to save money since the well was significantly under performing.[387]
On December 8 Joe Keith, a senior Halliburton manager, admitted to the U.S. Coast Guard-Interior Department panel in Houston that he left his post aboard Transocean’s rig to smoke a cigarette on the night of the April disaster in the Gulf. While he was away from his monitors, charts entered into evidence showed that pressure data indicated the well was filling up with explosive natural gas and crude. Halliburton shares immediately fell on the New York Stock Exchange when news of his admission emerged.[388]
In a December 23 letter, the U.S. Chemical Safety Board asked the Bureau of Ocean Energy Management, Regulation and Enforcement to discontinue its investigation of the blowout preventer, which began November 16 at a NASA facility near New Orleans, until dealing with conflicts of interest. The board said Transocean and Cameron International, maker of the blowout preventer, had more access than the board did, and that Det Norske Veritas, which led the testing, should be removed or monitored more closely. Transocean said the board's "accusations are totally unfounded."[389]
[edit] See also
- New York Times exploded view diagrams on the methods used to stop the oil spill [2]
- Timeline of the Deepwater Horizon oil spill
- List of industrial disasters
- List of oil spills
- Largest oil spills
- Prudhoe Bay oil spill
- Exxon Valdez oil spill (1989)
- Ixtoc I oil spill (1979)
- Piper Alpha (1988)
- Offshore oil and gas in the US Gulf of Mexico
- Oil Pollution Act of 1990
- Unified Command (Deepwater Horizon oil spill)
- National Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling
- Firecane
- BP
- Gulf of Mexico Foundation
[edit] References
- ^ Whitney, Michael (2010-06-23). Two Workers Dead in BP Oil Disaster Recovery Effort FireDogLake.com. Retrieved 2010-07-03.
- ^ June 23, 2010 (2010-06-23). "Gulf oil spill: Boat captain, despondent over spill, commits suicide | Greenspace | Los Angeles Times". Latimesblogs.latimes.com. http://latimesblogs.latimes.com/greenspace/2010/06/gulf-oil-spill-boat-captain-despondent-over-spill-commits-suicide.html. Retrieved 2010-07-14.
- ^ Power, Stephen; Gold, Russell; King, Neil Jr. (2010-06-08). "Staffing Levels on Deepwater Horizon Are Questioned". The Wall Street Journal (Dow Jones & Company). http://online.wsj.com/article/SB10001424052748703302604575294670738866384.html. Retrieved 2010-06-08.: BP had contracted the rig from Transocean, which both owned and operated the rig.
- ^ a b c Hoch, Maureen (2010-08-02). "New Estimate Puts Gulf Oil Leak at 205 Million Gallons". PBS NewsHour (MacNeil/Lehrer Productions). http://www.pbs.org/newshour/rundown/2010/08/new-estimate-puts-oil-leak-at-49-million-barrels.html. Retrieved 2010-12-19.
- ^ Burdeau, Cain; Holbrook, Mohr (2010-07-27). "Expert: bp-gulf-oil-spill-68000-square-miles-of.html". SkyTruth. Associated Press. http://blog.skytruth.org/2010/07/bp-gulf-oil-spill-68000-square-miles-of.html. Retrieved 2010-05-13.
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- ^ "Executive Order- National Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling (White House, May 22, 2010)". Whitehouse.gov. 2010-05-22. http://www.whitehouse.gov/the-press-office/executive-order-national-commission-bp-deepwater-horizon-oil-spill-and-offshore-dri. Retrieved 2010-06-01.
- ^ Attorney General Eric Holder on Gulf Oil Spill. U.S. Dept. of Justice. June 1, 2010.
- ^ "BP makes progress on new oil capture system". Upstream Online (NHST Media Group). 2010-07-12. http://www.upstreamonline.com/live/article221283.ece. Retrieved 2010-07-12.
- ^ Brenner, Noah; Guegel, Anthony (2010-06-17). "Congress hammers Hayward". Upstream Online (NHST Media Group). http://www.upstreamonline.com/live/article218091.ece. Retrieved 2010-07-10.
- ^ "Anadarko and Mitsui executives set to testify". Upstream Online (NHST Media Group). 2010-07-09. http://www.upstreamonline.com/live/article221198.ece. Retrieved 2010-07-10.
- ^ "BP engineer called doomed rig a 'nightmare well'". CBS News. Associated Press. 2010-06-14. http://www.cbsnews.com/stories/2010/06/14/national/main6581586.shtml. Retrieved 2010-06-30.
- ^ Gillis, Justin; Broder, John (2010-05-10). "Nitrogen-Cement Mix Is Focus of Gulf Inquiry". The New York Times (The New York Times Company). http://www.nytimes.com/2010/05/11/us/11hearings.html?sq=halliburton&st=cse&scp=2&pagewanted=all
- ^ Bart Stupak, Chairman (2010-05-12). Opening Statement, "Inquiry into the Deepwater Horizon Gulf Coast Oil Spill". U.S. House Committee on Commerce and Energy, Subcommittee on Oversight and Investigations. http://energycommerce.house.gov/Press_111/20100512/Stupak.Opening.05.12.2010.pdf. Retrieved 2010-05-12.
- ^ Andersson, Hilary (2010-06-21). "BP was told of oil safety fault 'weeks before blast'". BBC News. http://www.bbc.co.uk/news/10362139. Retrieved 2010-06-25.
- ^ David Hammer (2010-05-26). "Hearings: BP representative overruled drillers, insisted on displacing mud with seawater". Times-Picayune. http://www.nola.com/news/gulf-oil-spill/index.ssf/2010/05/hearings_bp_representative_ove.html. Retrieved 2010-05-26.
- ^ David Hammer (2010-05-26). "Oil spill hearings: BP man on Deepwater Horizon rig refuses to testify, says he will take the Fifth". Times-Picayune. http://www.nola.com/news/gulf-oil-spill/index.ssf/2010/05/oil_spill_hearings_bp_man_on_d.html. Retrieved 2010-05-27.
- ^ Erika Bolstad, Joseph Goodman and Marisa Taylor (2010-05-26). "BP worker takes 5th, making prosecution a possibility". http://www.mcclatchydc.com/2010/05/26/94884/bp-could-be-held-criminally-liable.html#storylink=omni_popular#ixzz0p81cchtN. Retrieved 2010-05-27.
- ^ David Hammer (2010-05-27). "Joint hearings resume in Kenner with a reduced witness list". Times-Picayune. http://www.nola.com/news/gulf-oil-spill/index.ssf/2010/05/joint_hearings_resume_in_kenne.html. Retrieved 2010-05-27.
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- ^ Weber, Harry R.; Kunzelman, Michael; Cappiello, Dina (2010-09-08). "All eyes on BP report on Gulf". News & Observer. Associated Press. http://www.newsobserver.com/2010/09/08/670029/all-eyes-on-bp-report-on-gulf.html. Retrieved 2010-09-08.[dead link]
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- ^ On "Oil Spill: The National Academy of Engineers Spreads the Blame Around" - by Brian Walsh - Ecocentric - 17 November 2010 - Time Inc.
- ^ "Missing Oil Spill Commission Document Shows BP Made Risky Decisions in Gulf to Save Time" - by Katie Howell - The New York Times - 23 November 2010.
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- ^ Weber, Harry R. (2010-12-24). "Fed board: In a statement Keep companies away from oil spill evidence". News & Observer (Associated Press). http://www.newsobserver.com/2010/12/23/879871/fed-panel-oil-spill-evidence-tests.html. Retrieved 21010-12-24.
[edit] External links
Wikimedia Commons has media related to: Deepwater Horizon oil spill
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Find more about Deepwater Horizon oil spill on Wikipedia's sister projects: Images and media from Commons News stories from Wikinews
- Bridge the Gulf Project Storytelling initiative led by Gulf Coast residents
- RestoreTheGulf.gov official U.S. Government Web site, taking over content and functions from Deepwater Horizon Response site
- Deepwater BP Oil Spill at Whitehouse.gov
- Deepwater Horizon Incident, Gulf of Mexico from the National Oceanic and Atmospheric Administration (NOAA)
- Deepwater Horizon Joint Investigation by the U.S. Coast Guard and Mineral Management Service
- Gulf of Mexico response from BP, including live video feed of riser
- Transocean Response Site – Transocean
- Smithsonian's Ocean Portal
- GeoPlatform web mapping system displaying the public version of the Environmental Response Management Application (ERMA).
- BP Report on Accident, Sept. 8, 2010, 14 Mb pdf download
- Lead state agency websites
- Alabama Governor's Office
- Florida Department of Environmental Protection (DEP)
- Emergency.Louisiana.gov
- Mississippi DEQ
- News media
- [3] Rescuing the wildlife caught in the slick
- Full coverage on C-SPAN video library
- Full coverage on CNN
- Full coverage on The Guardian
- Full coverage from the Houston Chronicle
- Full coverage from the Los Angeles Times Greenspace
- Full coverage from The Miami Herald
- Full coverage on The New York Times
- Full coverage from The Times-Picayune (New Orleans)
- Full coverage from the Press-Register (Mobile, Alabama)
- Full coverage from The Wall Street Journal
- Full coverage at WhoRunsGov at The Washington Post
- Full coverage from GRITtv
- Full coverage from WBBH-TV
- Full coverage from The News-Press (Ft. Myers, FL)
- Interactive Maps
- Mapping the Response to BP Oil Spill in the Gulf of Mexico (GeoPlatform.gov)
- Gulf Oil Spill Tracker interactive map and form for citizen reporting (SkyTruth.org)
- Map and Estimates of the Oil Spilled (The New York Times)
- Where Oil Has Made Landfall (The New York Times)
- Images
- Gulf Oil Spill 2010 Projected Trajectory from Louisiana Earth
- Rig fire at Deepwater Horizon April 21, '10 video at CNN iReport
- GOES-13 satellite images on the CIMSS Satellite Blog
- Animations of the disaster and sealing efforts
- University courses
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Deepwater Horizon oil spill - Wikipedia, the free encyclopedia
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