The Exxon Valdez oil spill occurred in Prince William Sound, Alaska, March 24, 1989, when Exxon Valdez, an oil tanker owned by Exxon Shipping Company, bound for Long Beach, California, struck Prince William Sound's Bligh Reef at 12:04 am local time and spilled 10.8 million US gallons (260,000 bbl; 41,000 m3) of crude oil over the next few days. It is considered to be one of the most devastating human-caused environmental disasters. The Valdez spill is the second largest in US waters, after the 2010 Deepwater Horizon oil spill, in terms of volume released. Prince William Sound's remote location, accessible only by helicopter, plane, or boat, made government and industry response efforts difficult and severely taxed existing response plans. The region is a habitat for salmon, sea otters, seals and seabirds. The oil, originally extracted at the Prudhoe Bay oil field, eventually covered 1,300 miles (2,100 km) of coastline, and 11,000 square miles (28,000 km2) of ocean.
According to official reports, the ship was carrying 53.09451 million US gallons (1,264,155 bbl; 200,984.6 m3) of oil, of which about 10.8 million US gallons (260,000 bbl; 41,000 m3) were spilled into the Prince William Sound. An approximate figure of 11 million US gallons (260,000 bbl; 42,000 m3) was a commonly accepted estimate of the spill's volume and has been used by the State of Alaska's Exxon Valdez Oil Spill Trustee Council, the National Oceanic and Atmospheric Administration and environmental groups such as Greenpeace and the Sierra Club.
Multiple factors have been identified as contributing to the incident:
- Exxon Shipping Company failed to supervise the master and provide a rested and sufficient crew for Exxon Valdez. The NTSB found this was widespread throughout the industry, prompting a safety recommendation to Exxon and to the industry.
- The third mate failed to properly maneuver the vessel, possibly due to fatigue or excessive workload.
- Exxon Shipping Company failed to properly maintain the Raytheon Collision Avoidance System (RAYCAS) radar, which, if functional, would have indicated to the third mate an impending collision with the Bligh Reef by detecting the "radar reflector", placed on the next rock inland from Bligh Reef for the purpose of keeping ships on course. This cause has only been identified by Greg Palast (without evidentiary support) and is not present in the official accident report.
Captain Joseph Hazelwood, who was widely reported to have been drinking heavily that night, was not at the controls when the ship struck the reef. However, as the senior officer, he was in command of the ship even though he was asleep in his bunk. In light of the other findings, investigative reporter Greg Palast stated in 2008, "Forget the drunken skipper fable. As to Captain Joe Hazelwood, he was below decks, sleeping off his bender. At the helm, the third mate never would have collided with Bligh Reef had he looked at his RAYCAS radar. But the radar was not turned on. In fact, the tanker's radar was left broken and disabled for more than a year before the disaster, and Exxon management knew it. It was just too expensive to fix and operate." Exxon blamed Captain Hazelwood for the grounding of the tanker.
Other factors, according to an MIT course entitled "Software System Safety" by Professor Nancy G. Leveson, included:
- Ships were not informed that the previous practice of the Coast Guard tracking ships out to Bligh Reef had ceased.
- The oil industry promised, but never installed, state-of-the-art iceberg monitoring equipment.
- Exxon Valdez was sailing outside the normal sea lane to avoid small icebergs thought to be in the area.
- The 1989 tanker crew was half the size of the 1977 crew, worked 12- to 14-hour shifts, plus overtime. The crew was rushing to leave Valdez with a load of oil.
- Coast Guard vessel inspections in Valdez were not performed, and the number of staff was reduced.
- Lack of available equipment and personnel hampered the spill cleanup.
This disaster resulted in International Maritime Organization introducing comprehensive marine pollution prevention rules (MARPOL) through various conventions. The rules were ratified by member countries and, under International Ship Management rules, the ships are being operated with a common objective of "safer ships and cleaner oceans".
In 2009, Exxon Valdez Captain Joseph Hazelwood offered a "heartfelt apology" to the people of Alaska, suggesting he had been wrongly blamed for the disaster: "The true story is out there for anybody who wants to look at the facts, but that's not the sexy story and that's not the easy story," he said. Hazelwood said he felt Alaskans always gave him a fair shake.
Video Exxon Valdez oil spill
Clean-up and environmental impact
Chemical dispersant, a surfactant and solvent mixture, was applied to the slick by a private company on March 24 with a helicopter. But the helicopter missed the target area. Scientific data on its toxicity were either thin or incomplete. In addition, public acceptance of a new, widespread chemical treatment was lacking. Landowners, fishing groups, and conservation organizations questioned the use of chemicals on hundreds of miles of shoreline when other alternatives may have been available."
According to a report by David Kirby for TakePart, the main component of the Corexit formulation used during cleanup, 2-butoxyethanol, was identified as "one of the agents that caused liver, kidney, lung, nervous system, and blood disorders among cleanup crews in Alaska following the 1989 Exxon Valdez spill.
Mechanical cleanup was started shortly afterwards using booms and skimmers, but the skimmers were not readily available during the first 24 hours following the spill, and thick oil and kelp tended to clog the equipment. Despite civilian insistence for a complete clean, only 10% of total oil was actually completely cleaned. Exxon was widely criticized for its slow response to cleaning up the disaster and John Devens, the mayor of Valdez, has said his community felt betrayed by Exxon's inadequate response to the crisis. More than 11,000 Alaska residents, along with some Exxon employees, worked throughout the region to try to restore the environment.
Because Prince William Sound contained many rocky coves where the oil collected, the decision was made to displace it with high-pressure hot water. However, this also displaced and destroyed the microbial populations on the shoreline; many of these organisms (e.g. plankton) are the basis of the coastal marine food chain, and others (e.g. certain bacteria and fungi) are capable of facilitating the biodegradation of oil. At the time, both scientific advice and public pressure was to clean everything, but since then, a much greater understanding of natural and facilitated remediation processes has developed, due somewhat in part to the opportunity presented for study by the Exxon Valdez spill. Despite the extensive cleanup attempts, less than ten percent of the oil was recovered and a study conducted by NOAA determined that as of early 2007 more than 26 thousand U.S. gallons (98 m3) of oil remain in the sandy soil of the contaminated shoreline, declining at a rate of less than 4% per year.
Both the long-term and short-term effects of the oil spill have been studied. Immediate effects included the deaths of 100,000 to as many as 250,000 seabirds, at least 2,800 sea otters, approximately 12 river otters, 300 harbor seals, 247 bald eagles, and 22 orcas, and an unknown number of salmon and herring.
In 2003, fourteen years after the spill, a team from the University of North Carolina found that the remaining oil was lasting far longer than anticipated, which in turn had resulted in more long-term loss of many species than had been expected. The researchers found that at only a few parts per billion, polycyclic aromatic hydrocarbons caused a long-term increase in mortality rates. They reported that "species as diverse as sea otters, harlequin ducks and killer whales suffered large, long-term losses and that oiled mussel beds and other tidal shoreline habitats will take an estimated 30 years to recover."
In 2006, a study done by the National Marine Fisheries Service in Juneau found that about 6 miles (9.7 km) of shoreline around Prince William Sound was still affected by the spill, with 101.6 tonnes of oil remaining in the area. Exxon Mobil denied any concerns over any remaining oil, stating that they anticipated a remaining fraction that they assert will not cause any long-term ecological impacts, according to the conclusions of the studies they had done: "We've done 350 peer-reviewed studies of Prince William Sound, and those studies conclude that Prince William Sound has recovered, it's healthy and it's thriving." However, in 2007 a NOAA study concluded that this contamination can produce chronic low-level exposure, discourage subsistence where the contamination is heavy, and decrease the "wilderness character" of the area.
The effects of the spill continued to be felt for many years afterwards. As of 2010 there were an estimated 23,000 US gallons (87 m3) of Valdez crude oil still in Alaska's sand and soil, breaking down at a rate estimated at less than 4% per year.
On March 24, 2014, the twenty-fifth anniversary of the spill, NOAA scientists reported that some species seem to have recovered, with the sea otter the latest creature to return to pre-spill numbers. Scientists who have monitored the spill area for the last 25 years report that concern remains for one of two pods of local orca whales, with fears that one pod may eventually die out. Federal scientists estimate that between 16,000 and 21,000 US gallons (61 to 79 m3) of oil remains on beaches in Prince William Sound and up to 450 miles (725 km) away. Some of the oil does not appear to have biodegraded at all. A USGS scientist who analyses the remaining oil along the coastline states that it remains among rocks and between tide marks. "The oil mixes with seawater and forms an emulsion...Left out, the surface crusts over but the inside still has the consistency of mayonnaise - or mousse." Alaska state senator Berta Gardner is urging Alaskan politicians to demand that the US government force ExxonMobil to pay the final $92 million (£57 million) still owed from the court settlement. The major part of the money would be spent to finish cleaning up oiled beaches and attempting to restore the crippled herring population.
Maps Exxon Valdez oil spill
Litigation and cleanup costs
In the case of Exxon v. Baker, an Anchorage jury awarded $287 million for actual damages and $5 billion for punitive damages. To protect itself in case the judgment was affirmed, Exxon obtained a $4.8 billion credit line from J.P. Morgan & Co. J.P. Morgan created the first modern credit default swap in 1994, so that Morgan's would not have to hold as much money in reserve (8% of the loan under Basel I) against the risk of Exxon's default.
Meanwhile, Exxon appealed the ruling, and the 9th U.S. Circuit Court of Appeals ordered the original judge, Russel Holland, to reduce the punitive damages. On December 6, 2002, the judge announced that he had reduced the damages
After more appeals, and oral arguments heard by the 9th Circle.
The Oil Spill Recovery Institute was formed after United States Congress approved it to seek a solution. Collaborating with InnoCentive they found a partial solution for the flow of oil.
Coast Guard report
A report by the US National Response Team summarized the event and made a number of recommendations, such as changes to the work patterns of Exxon crew in order to address the causes of the accident.
Oil Pollution Act of 1990
In response to the spill, the United States Congress passed the Oil Pollution Act of 1990 (OPA). The legislation included a clause that prohibits any vessel that, after March 22, 1989, has caused an oil spill of more than 1 million US gallons (3,800 m3) in any marine area, from operating in Prince William Sound.
In April 1998, the company argued in a legal action against the Federal government that the ship should be allowed back into Alaskan waters. Exxon claimed OPA was effectively a bill of attainder, a regulation that was unfairly directed at Exxon alone. In 2002, the 9th Circuit Court of Appeals ruled against Exxon. As of 2002, OPA had prevented 18 ships from entering Prince William Sound.
OPA also set a schedule for the gradual phase in of a double hull design, providing an additional layer between the oil tanks and the ocean. While a double hull would likely not have prevented the Valdez disaster, a Coast Guard study estimated that it would have cut the amount of oil spilled by 60 percent.
The Exxon Valdez supertanker was towed to San Diego, arriving on July 10. Repairs began on July 30. Approximately 1,600 short tons (1,500 t) of steel were removed and replaced. In June 1990 the tanker, renamed S/R Mediterranean, left harbor after $30 million of repairs. It was still sailing as of January 2010, registered in Panama. The vessel was then owned by a Hong Kong company, who operated it under the name Oriental Nicety. In August 2012, it was beached at Alang, India and dismantled.
Alaska regulations
In the aftermath of the spill, Alaska governor Steve Cowper issued an executive order requiring two tugboats to escort every loaded tanker from Valdez out through Prince William Sound to Hinchinbrook Entrance. As the plan evolved in the 1990s, one of the two routine tugboats was replaced with a 210-foot (64 m) Escort Response Vehicle (ERV). Tankers at Valdez are no longer single-hulled. Congress enacted legislation requiring all tankers to be double-hulled as of 2015.
Economic and personal impact
In 1991, following the collapse of the local marine population (particularly clams, herring and seals) the Chugach Alaska Corporation, an Alaska Native Corporation, filed for Chapter 11 bankruptcy protection. It has since recovered.
According to several studies funded by the state of Alaska, the spill had both short-term and long-term economic effects. These included the loss of recreational sports, fisheries, reduced tourism, and an estimate of what economists call "existence value", which is the value to the public of a pristine Prince William Sound.
The economy of the city of Cordova, Alaska was adversely affected after the spill damaged stocks of salmon and herring in the area. The village of Chenega was transformed into an emergency base and media outlet.The local villagers had to cope with a tripling of their population from 80 to 250. When asked how they felt about the situation, a village councillor noted that they were too shocked and busy to be depressed; others emphasized the human costs of leaving children unattended while their parents worked to clean up. Many Native Alaskans were worried that too much time was spent on the fishery and not enough on the land that supports subsistence hunting.
In 2010, a CNN report alleged that many oil spill cleanup workers involved in the Exxon Valdez response had subsequently become sick. Anchorage lawyer Dennis Mestas found that this was true of 6,722 of 11,000 worker files he was able to inspect. Access to the records was controlled by Exxon. Exxon responded in a statement to CNN:
"After 20 years, there is no evidence suggesting that either cleanup workers or the residents of the communities affected by the Valdez spill have had any adverse health effects as a result of the spill or its cleanup."
Reactions
In 1992, Exxon released a video titled Scientists and the Alaska Oil Spill, to be distributed to schools. Dr. Michael Fry called it a piece of "corporate propaganda".
In December 1994, the Unabomber assassinated Burson-Marsteller executive Thomas Mosser, accusing him of having "helped Exxon clean up its public image after the Exxon Valdez incident". The PR company claimed not to have been contracted during the actual crisis.
See also
- List of oil spills
- Deepwater Horizon oil spill
- Ixtoc I oil spill
- Dead Ahead: The Exxon Valdez Disaster, 1992 HBO movie
References
Further reading
- Lee, Douglas B. (August 1989). "Tragedy in Alaska Waters". National Geographic. Vol. 176 no. 2. pp. 260-263. ISSN 0027-9358. OCLC 643483454.
External links
- NTSB safety recommendation to address crew management deficiencies at Exxon and in industry
- Exxon Valdez Oil Spill Trustee Council
- ExxonMobil updates and news on Valdez
- Images from the Exxon Valdez oil spill from the National Ocean Service Office of Response and Restoration
- EVOS Damage Assessment and Restoration at National Marine Fisheries Service
- Oil Spill Profiles: Exxon Valdez at United States Environmental Protection Agency
- US National Response Team
- Exxon Valdez oil spill at Encyclopedia of Earth
- Ronen Perry, "Economic Loss, Punitive Damages, and the Exxon Valdez Litigation" in Georgia Law Review (2010)
- The story behind the oil spill verdict - originally published in San Diego Union-Tribune
- Alaskan Regional Response Team report on the Exxon Valdez disaster
- BP Played Central Role in Botched Containment of 1989 Exxon Valdez Disaster - video report by Democracy Now!
- The short film Exxon Valdez Oil Spill Assessment (April 24, 1990) is available for free download at the Internet Archive
- The short film Exxon Valdez: One Year Later (March 22, 1990) is available for free download at the Internet Archive
- Photos related to the oil spill from the Alaska Resources Library and Information Services (ARLIS)
- "25 Years After Exxon Valdez, BP Was the Hidden Culprit" at Truthdig (March 23, 2014)
Source of the article : Wikipedia
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