1
Earthquake Risk Study
for Oregon's Critical Energy Infrastructure Hub
Yumei Wang, DOGAMI,
Steven F. Bartlett, University of Utah, and Scott B. Miles, Western
Washington University
Table of Contents
Summary of Report..........................................................................................................................5
Section 1.Introduction....................................................................................................................16
Background
Objective
Use of this Study
Scope of Work
Study Methods
Limitations
Report Organization
Funding
Section 2. Characterization of Oregon's Natural Hazards.............................................................27
Natural Hazards and Risk
Development of Risk Matrix
Method to Develop Risk Score
Previous Statewide Earthquake Studies
Statewide Damage and Loss Estimates
Lessons from Recent Subduction Zone Earthquakes
Section 3. Oregon's Energy Sector................................................................................................33
Overview of Energy Sector
Critical Energy Infrastructure (CEI) Hub: Project Study Area
Economic Interdependencies with the Energy Sector
Comparison with Other Economic Studies
2
Section 4. Seismic Hazards in the CEI Hub..................................................................................39
Seismic Hazards in the CEI Hub Area
Active Fault Sources
Ground Shaking Characteristics
Earthquake Intensity
Potentially Unstable Soils
Liquefaction
Lateral Spreading
Co-Seismic Settlement
Bearing Capacity Failures
Landslides
Seiches
Fires
Hazardous Material Releases
Ground Deformation Analyses in the CEI Hub
BPA Study
Lateral Spreading Sensitivity Study
Section 5. Energy Facilities and Vulnerabilities in the CEI Hub..................................................61
CEI Hub Facilities: Liquid Fuel, Natural Gas and Electricity
Oregon Building Code Influences in the CEI Hub
Oil Terminal Facilities
Port structures
MOTEMS and CEI Hub Ports
Seismic Pipeline Vulnerability
Non-Energy Facilities and Structures
Waterway Transportation to the CEI Hub
Section 6. Summary of Findings....................................................................................................90
Seismic Risk in the CEI Hub
Lack of System Redundancies
System Interdependencies
Liquid Fuel
Natural Gas
Electricity
Impacts to Oregon
3
Section 7. Recommendations.......................................................................................................100
Recommendations
Recommendation #1: Conduct Seismic Vulnerability Assessments
Recommendation #2: Institutionalize Long-Term Mitigation Programs
Recommendation #3: Oversight by Homeland Security Council
Recommendation #4: Build Oregons Seismic Resilience
Recommended Practices for Building Seismic Resilience
Risk Management Approach
Encourage a Culture of Earthquake Preparedness
Section 8. Acknowledgments...........................................................................
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