Exxon Valdez Case Study Notes (MPHO 784)

Exxon Valdez Case Study: Overview and Context

• Event: Exxon Valdez oil spill occurred on March 24, 1989 in Prince William Sound, Alaska. The tanker hit Bligh Reef and released a large volume of crude oil.
  • Reported spill volume: approximately $53 \times 10^{6}$ gallons of crude oil. (Page 9 mentions this total.)
  • Best estimates of waterborne/spill impacts cited in later slides: about $11 \times 10^{6}$ gallons spilled (context-dependent figure in page 10).
• Geographic scale of impact:
  • Spill spread: about $460\ \text{miles}$.
  • Shoreline affected: about $1300\ \text{miles}$.
• Environmental and wildlife impacts:
  • Wildlife casualties and affected groups include approximately $2.5\times 10^{5}$ seabirds, $2,800$ sea otters, $300$ harbor seals, $250$ bald eagles, and up to $22$ whales killed.
  • The spill is still considered among the worst oil spills worldwide in terms of environmental damage.
• Social, economic, and community impacts:
  • Long-term sociocultural disruption and psychosocial stress within affected communities (e.g., Cordova).
  • Protracted litigation and prolonged ecological damage affected recovery and community well-being.
• Readings and context for this session:
  • Chapter 8, The Exxon Valdez oil spill, Alaska, in J.K. Mitchell (ed.), The Long Road to Recovery: Community Responses to Industrial Disaster (1996).
  • Alaska Oil Spill Commission Final Report (1984–1985) cited for pre-disaster conditions, response capabilities, and early warnings.
  • Additional slide information and video links provided in the session materials.

Low-Probability High-Consequence (LC/HC) Concepts

• Definition and framing:
  • LC/HC events are characterized as being very unlikely, but with potentially immense consequences if they occur.
• Key characteristics (U.S. EPA, Social Decision-Making for High Consequence, Low Probability Occurrences, October 1978):
  1. The probability of occurrence is very low and the underlying mechanism is often uncertain, making risk estimates highly subjective and variable.
  2. The potential damages are frequently catastrophic.
  3. Many environmental risks are latent and may be borne unknowingly for long periods.
  4. Once incurred, the consequences may not be reversible for long periods of time.
  5. Environmental risks often involve collective exposure of large segments of society.
  6. Those bearing risk typically receive a disproportionately small share of the benefits.
  7. It is difficult to establish a legally defensible cause-and-effect relationship between liable parties and those who bear losses.
• These principles help frame the Exxon Valdez case as a high-consequence event with systemic, rather than attributable, causes.

Vessel Details and Hull Design

• Exxon Valdez specifics:
  • Vessel length: $301\ \text{meters}$ (≈ $987\ \text{ft}$).
  • Year delivered: 1986.
  • Hull design: Single-hull tanker design at the time of the spill, which is associated with higher leakage risk in a spill event.
• Policy shift and industry context:
  • The spill helped catalyze the shift from single-hull to double-hull tankers, though the phaseout of single-hull designs took a long time.
  • A relevant example of double-hull effectiveness is cited: the Norwegian tanker SKS Satilla (2009) collided with a submerged oil rig but did not spill oil, illustrating potential resilience of double-hull designs.
• Related reading and updates:
  • Full discussion and articles on the shift to double-hull tankers are provided in subsequent slides and external links.

Timeline of the Spill and Immediate Impacts

• Immediate facts:
  • Date of spill: March 24, 1989 (Good Friday), with subsequent days including Easter weekend.
  • Location: Bligh Reef, Prince William Sound.
• Human factors and leadership:
  • Captain Hazelwood and ship leadership received Exxon Fleet safety awards in 1987 and 1988, preceding the 1989 disaster.
  • The ship was featured on an Exxon Shipping Company calendar with messaging to “take time to be careful – now.”
• Response and governance context:
  • The disaster highlighted limitations in response capabilities, including pre-existing underinvestment in preparation, maintenance, and readiness.

Reading for This Week’s Session

• Reading cited: Chapter 8 (The Exxon Valdez oil spill, Alaska) in The Long Road to Recovery: Community Responses to Industrial Disaster (Mitchell, 1996).
• Additional guidance:
  • The slide set provides supplementary information and updates.
  • Video links are included to deepen understanding of the disaster context and outcomes.

Exxon Valdez: Disruption and the LC/HC Lens

• Explanatory framing:
  • Exxon Valdez is used as a pivotal case illustrating a low-probability, high-consequence event in a complex, highly interconnected industrial system.
• Additional context from the slide set:
  • Emphasis on reading carefully to extract key points, and using the provided video links for a fuller sense of the disaster.

ExxON VALDEZ: Detailed Facts and Impacts

• Timeline and spill specifics:
  • Spill occurred on March 24, 1989; vessel struck Bligh Reef in Prince William Sound.
  • The spill involved roughly $53 \times 10^{6}$ gallons of crude oil; the event is widely recognized as a major oil spill in U.S. waters until Deepwater Horizon (2010).
• Captain Hazelwood:
  • Captain Hazelwood received Exxon Fleet safety awards for 1987 and 1988, which is notable given the later disaster in March 1989.
• Other contemporaneous notes:
  • The ship was featured on an Exxon calendar with a safety-oriented message (“take time to be careful - now”).

Exxon Valdez Disaster Impacts

• Environmental and geographic scope:
  • Total oil spilled: $53 \times 10^{6} \text{ gallons}$ (widely reported).
  • Waterborne spill impact: around $11 \times 10^{6} \text{ gallons}$ in some accounting contexts.
  • Geographic spread: $460\ \text{miles}$; shoreline impacted: $1300\ \text{miles}$.
• Wildlife and ecosystem damage:
  • Wildlife casualties: ~$2.5\times 10^{5}$ seabirds; ~$2{,}800$ sea otters; ~$300$ harbor seals; ~$250$ bald eagles; up to $22$ whales.
  • Some species experienced long-term impacts, with ongoing effects continuing after the spill.

Alaska Digital Archives and Visual Documentation

• The slides reference actual archival photographs from the Alaska Digital Archives to illustrate the event and its environmental context.
• These visuals accompany narrative descriptions of shoreline oiling, wildlife impacts, and community responses.

Lessons from Exxon Valdez: Ethics, Society, and Discourse

• Foundational quotes and interpretations:
  • Charles Wohlforth ( Anchorage Daily News ): “Our society, our civilization, had no concept of the scale of our actions… our ability to destroy and our inability to fix it.” (Bushell & Jones, The Spill, 2009)
• Human and community perspectives:
  • Kelley Weaverling (Cordova resident): “There was death everywhere, dead birds, dead otters, dead deer. A vast amount of oil covered the ocean… it was a terrible scene, one to rival anyone’s idea of hell.” (Bushell & Jones, The Spill, 2009)
  • Tim Robertson (Seldovia resident): emotional devastation linked to personal ties to the environment and industry practices.
• Recurring themes:
  • Impacts on livelihoods, coastal communities, and psychological well-being; the disaster catalyzed broader discussions about environmental justice, risk governance, and the responsibilities of corporate and governmental actors.

Early Warnings and Systemic Context

• Historical warnings before the spill:
  • EPA, 1978: “Social Decision-Making for High Consequence, Low Probability Occurrences.” This document framed how high-risk, low-probability events should be contemplated in policy and planning.
  • Alaska-specific concerns: U.S. EPA, 1977; observations about Alaskan oil transportation and the potential dangers of tanker traffic.
  • Dr. D.R. Klein (University of Alaska): early concerns about oil transport risks dating to 1971 (Oil on Ice).
• Implications for risk assessment:
  • Early warnings highlighted the potential for substantial hazards, yet institutional planning and response capabilities remained insufficient ahead of the Exxon Valdez disaster.

Systemic Failures: Not a Single Factor

• Davis’s assessment (as presented in the slides):
  • “Not a single factor or cause of this disaster” but a failure of a complex system.
  • The Exxon Valdez spill is described as a classic example of ‘self-organized criticality’: when a highly complex system reaches a critical state and a small error triggers a large disaster.
• Systemic characteristics at the time:
  • SCALE: Massive scale of operations and oil trade. Example figures: roughly $7{,}000$ tankers transporting $10\times 10^{9}$ barrels per year.
  • Large vessel sizes (e.g., the Exxon Valdez) and a web of international flags and jurisdictions complicating accountability.
• Key takeaway:
  • The disaster was the result of interdependent failures across technology, people, and organizational structures, not a single misstep.

Structural Factors: Responsibility and Governance

• Complexity of responsibility in oil transport:
  • International operations with multiple flags and jurisdictions created governance ambiguities.
  • The decision to use single-hull tankers reflected regulatory and industry practices of the time, despite known risks.
• Public and regulatory response dynamics:
  • The Alaska Oil Spill Commission Final Report highlighted underfunded and understaffed capacity to oversee operation and maintenance.
  • The memo by Dan Lawn (May 1, 1984) to Alyeska’s leadership described severe understaffing, morale problems, and reduced maintenance, signaling elevated risk prior to the spill.

Response Capabilities, Preparedness, and Crisis Management

• Systemic under-resourcing and preparedness gaps:
  • Under-budgeting and under-staffing of the Valdez Marine Terminal and the wider response system compromised readiness for a major spill.
  • The memo describes a decline in trained personnel and routine monitoring, undermining the ability to prevent or respond effectively to a major event.
• Accumulated risk factors prior to the spill:
  • Before the event: captain’s state, watch changes, radar monitoring gaps, and a reduced presence of trained personnel.
  • Calendar/scheduling factors: the disaster occurred during a holiday weekend (Good Friday to Easter Monday), contributing to operational confusion and slower response.
• Response realities during the spill:
  • Lack of preparedness for large-scale containment and recovery operations.
  • Initial response characterized by confusion about leadership and authority; limited containment equipment available; and mismatches between landside and waterside procedures.

Drills, Realism, and Organizational Mindset

• Unrealistic assumptions about recovery capabilities:
  • Alyeska’s contingency plan was judged to be technically compliant on paper, but recovery-rate assumptions (Appendix B) were deemed 80% too high by a reviewer in 1982.
• Drills as a learning point:
  • A 1985 spill drill revealed serious operational shortcomings: unjoined booms, a trapped boat within boomed areas, a dead pump truck battery, outdated contact lists, and inadequate task reallocation during a crisis.
  • The drill episode was described as a “Keystone Cops” scenario and highlighted that drills did not translate into real-world readiness.
• Mindset factors:
  • Alyeska managers and staff reportedly believed that accidents would occur only infrequently, leading to complacency and reduced vigilance.
  • Quote illustrating mindset: “My sense was, all of us at Alyeska had bought into the idea that an accident of any kind was only going to happen once every X number of years, and we weren’t there yet, so it wasn’t going to happen.”

Information Processing, Communication, and Emergency Response

• Information processing and transmission issues:
  • Early response suffered from slow, distorted, or fragmented information flow between organizations and to the public.
• Emergency response structure:
  • The response was ad hoc and fragmented by design, with no unified, timely command and control across federal, state, and corporate actors.
  • The decision-making grid was hindered by a tripartite arrangement between federal agencies, the state, and Exxon, complicating timely actions.
• Local knowledge and logistics:
  • Exxon's approach relied on experts from outside Alaska rather than leveraging local knowledge of Prince William Sound currents, winds, and depths, leading to logistical challenges and suboptimal response decisions.

At the Time and Aftermath: Vigilance, Recovery, and Long-Term Impacts

• Atrophy of vigilance:
  • There was a documented decline in safety vigilance over 11.5 years of operation before the major spill, with tanker traffic through the Valdez Arm reaching ≈ $8{,}700$ times.
• Recovery and ecological implications:
  • The environment injured by the Exxon Valdez spill is not expected to return to its pre-spill condition, or even to what it would have been absent the spill (as of updated reflections).
  • Economic and social impacts persisted, with long-term consequences for fisheries, communities, and local economies.

Impacts and Recovery in Cordova and Affected Communities

• Sociocultural and psychosocial disruption:
  • Long-term psychosocial effects documented in Cordova and surrounding communities, including stress, depression, and changes in social dynamics.
  • Prolonged litigation and ecological damage contributed to ongoing recovery challenges.
• Personal narratives and community voices:
  • Cordova innkeeper Margy Johnson described significant upheaval in daily life and business.
  • Cordova fisherman Kory Blake described enduring economic and psychosocial strain as the community adjusted to the spill’s consequences.
• Scholarly synthesis:
  • Research syntheses (Gill, Picou, Ritchie and colleagues) document sociocultural disruption, psychosocial stress, and long-term resource loss spirals among commercial fishermen and Alaska Natives.
  • This material includes references to studies presented at the International Oil Spill Conference Proceedings (2014) on two decades of social science research related to the Exxon Valdez spill.

Quotes, Perspectives, and Primary Sources

• Notable quotes from community members and analysts (as presented in the slides):
  • Charles Wohlforth, Anchorage Daily News: “Our society, our civilization, had no concept of the scale of our actions… we had no notion of our ability to destroy and our inability to fix it.”
  • Kelley Weaverling (Cordova resident): vivid descriptions of ecological destruction and emotional trauma.
  • Tim Robertson (Seldovia resident): personal acknowledgement of emotional devastation tied to industrial practice.
• Official and expert analyses cited:
  • NOAA and Alaska Oil Spill Commission Final Report discussions on response capabilities, system failures, and the importance of improved preparedness.
  • Retrospective assessments emphasize the importance of recognizing early warnings and the risks of complacency.

Reading, Resources, and Cross-References

• Foundational readings and sources:
  • Mitchell, J.K. (ed.). 1996. The Long Road to Recovery: Community Responses to Industrial Disaster. The Exxon Valdez chapter (Chapter 8).
  • U.S. EPA (1978). Social Decision-Making for High Consequence, Low Probability Occurrences. Key LC/HC concepts used to frame risk and policy discussions.
  • U.S. EPA (1977) and D.R. Klein (1971): early warnings and concerns about Alaskan oil transportation and tanker traffic risks.
  • Alaska Oil Spill Commission Final Report (1984–1985): pre-disaster analyses of response capabilities, funding, staffing, and organizational capacity.
  • Bushell & Jones (The Spill, 2009): documented witness accounts and sociocultural analyses undergirding the spill’s long-term impacts.
• Additional materials and media:
  • Exxon Valdez Oil Spill: In the Wake of Disaster | Retro Report | The New York Times (video link).
  • NPR (2014): Why the Exxon Valdez spill was a Eureka moment for science (impact and policy lessons).
  • NOAA response and recovery resources detailing wildlife and ecological recovery trajectories and ongoing impacts.

Significance for Sustainable Environmental Futures

• The Exxon Valdez case serves as a foundational example for:
  • Understanding high-stakes risk in industrial systems and the interplay between technology, organizations, and governance.
  • The importance of robust preparedness, realistic contingency planning, and investment in response capabilities.
  • Recognizing the long-term ecological, economic, and sociocultural costs of environmental disasters and the need for resilient, inclusive recovery strategies.
  • Emphasizing the role of memory, vigilance, and institutional learning to prevent recurrence of similar LC/HC events.

Key Formulas and Quantitative References (recap)

• Spill volume figures:
  • Total reported spill: $53 \times 10^{6} \text{ gallons}$
  • Contextual waterborne/spill figure: $11 \times 10^{6} \text{ gallons}$
• Geography and scale:
  • Spread: $460\ \text{miles}$
  • Shoreline impacted: $1300\ \text{miles}$
• Vessel and fleet scales:
  • Tankers: $7{,}000$ (approximate number in the system at the time)
  • Oil transported: $10 \times 10^{9} \text{ barrels per year}$
• Risk and response scales:
  • Tanker length (Exxon Valdez): $301\ \text{meters}$ (≈ $987\ \text{ft}$)
  • Double-hull shift context: illustrated by example of $8{,}700\ \text{times}$ through Valdez Arm (historical traffic volume reference)