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Emergency Response Planning for Water Utility Contamination Events

Zachry Department of Civil Engineering Water Resources Engineering. Texas Section ASCE Spring 2011 Meeting. Emergency Response Planning for Water Utility Contamination Events. April 29 th , 2011. Outline. Introduction History Emergency Management System Research Approach

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Emergency Response Planning for Water Utility Contamination Events

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  1. Zachry Department of Civil Engineering Water Resources Engineering Texas Section ASCE Spring 2011 Meeting Emergency Response Planning for Water Utility Contamination Events April 29th , 2011

  2. Outline • Introduction • History • Emergency Management System • Research Approach • Virtual City of Mesopolis • Results

  3. Water Supply Stages STAGE 1: Water Sources: Ground or Surface STAGE 4: Sewage and Sanitization STAGE 3: Residential, Commercial, Industrial, Agricultural Use STAGE 2: Treatment Process

  4. System Complexity Water Distribution System of Dover Township, New Jersey http://www.atsdr.cdc.gov/hs/dover/dov_p1.html

  5. Timeline • Threat of poisoning US water supplies by al-Qaeda Safe Drinking Water Act • Department of Homeland Security • EO 13010 on Critical Infrastructure 1974 1993 1996 2001 2002 2002 2003 Milwaukee Tragedy • Public Health Security and Bioterrorism Preparedness and Response Act • 9/11 Attacks

  6. Emergency Management System • Risk Assessment Event

  7. Response Plan: Important Aspects • Trigger events that alert utility managers to a potential threat • Response actions to cope with the threat • Response objectives that utility operators expect to achieve

  8. Trigger Events

  9. Response Actions Protective Actions Assessment Actions Corrective Actions

  10. Response Criteria

  11. Research Framework

  12. Research Teams Field surveys to collect information about consumer behaviors and perceptions Develop a sociotechnical model using agent-based modeling

  13. Research Phases • Phase I: Quantitative Risk Assessment • Phase II: Multiobjective Response Optimization • Phase III: Derivation of Response Rules • Integration

  14. Mesopolis Virtual City Airport Residential (mid density) University Campus Downtown Residential (mid density) Industry 8 miles Residential (low density) Naval Base Residential (low density)

  15. Mesopolis Virtual City

  16. Illustration of Decision Space Treatment Plant Treatment Plant

  17. Illustration of Objectives Space

  18. Results • Eroding public trust is not a major concern • Higher health impacts are associated with lower demand times of year • Corrective response actions does not erode system serviceability during lower demand times of year • Contaminant dilution: The larger treatment plant is not necessarily the more vulnerable one

  19. Questions and Answers

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