Mapping Industrial Hazards

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In this livestream, we use the Garden Grove HazMat disaster, in Orange County, California, to explore publicly-available data which shows the locations of major industrial users/producers of chemicals. We explain the use of geography tools for mapping and understanding pollution, highlighting the importance of zoning, stormwater management, and environmental justice. We use data from the Cal EPA to explore the Garden Grove’s facility’s history of stormwater-management violations. We overlay school locations with the locations of major chemical users in Garden Grove.

AI-Generated Outline

Garden Grove Chemical Incident Overview

  • Zeke Lunder introduces the topic of the chemical incident in Garden Grove, California, affecting over 45,000 people.
  • The incident involves a tank full of hazardous chemicals that could either explode or leak toxic waste.
  • Zeke explains the use of geography tools for mapping and understanding pollution, similar to those used for wildfire mapping.
  • The discussion will cover the geography of the incident, the tools used by the incident command team, and the impact of poverty and race on the situation.

Geography and Mapping Tools

  • Zeke discusses the importance of geography in understanding why things happen where they do.
  • The tools used for mapping wildfires are also useful for mapping and understanding emergency incidents.
  • The incident command team uses similar tools for support and coordination during all-hazards incidents.
  • Zeke emphasizes the role of poverty and race in the geography of pollution and disaster.

Garden Grove Location and Incident Details

  • Garden Grove is located in Orange County, south of the Grapevine and near the LA Basin.
  • The incident involves a facility that makes canopies for fighter jets using chemicals stored in tanks.
  • The facility has a history of safety violations, including stormwater management issues.
  • Zeke explains how to use Google Earth to investigate potential hazards near industrial areas.

Zoning and Industrial Areas

  • Zeke explains the concept of zoning and its role in separating industrial areas from residential ones.
  • Garden Grove’s zoning map shows industrial areas in green and schools in brown.
  • The importance of zoning in maintaining a balance between industrial activities and residential life is highlighted.
  • Zeke discusses the role of planners in city growth and development.

Stormwater Management and Environmental Violations

  • Zeke explains the importance of stormwater management and the impact of industrial activities on water quality.
  • The facility involved in the incident has a history of stormwater violations.
  • Zeke discusses the role of the California Department of Environmental Protection in monitoring and enforcing environmental regulations.
  • The data from Cal EPA shows the facility’s history of violations, including failure to submit annual reports and improper handling of hazardous waste.

Evacuation and Mapping Tools

  • The evacuation area is large due to the potential blast radius of the tank.
  • Zeke introduces a website that provides a briefing map with different zones of potential devastation.
  • The use of mapping tools like Cal Topo to predict wind direction and potential impact areas is discussed.
  • Zeke emphasizes the importance of situational awareness and understanding the geography of pollution.

Environmental Justice and Data Resources

  • Zeke discusses the concept of environmental justice and its impact on low-income communities.
  • A geographic visualization of environmental justice shows higher pollution levels in poor neighborhoods.
  • The importance of data resources like the Cal EPA site and the Environmental Protection Agency’s databases is highlighted.
  • Zeke explains how to use these resources to understand the geography of pollution and its impact on communities.

Census Data and Community Impact

  • Zeke provides demographic data for Garden Grove, including ethnicity, language proficiency, and education levels.
  • The discussion highlights the disproportionate impact of environmental hazards on low-income and minority communities.
  • The challenges faced by evacuated residents, including the high cost of hotels during a holiday weekend, are discussed.
  • Zeke emphasizes the importance of understanding the demographic and socioeconomic factors affecting disaster response and recovery.

Incident Command and Planning

  • The Orange County Fire Authority has an incident command team managing the response.
  • The team operates on a 12-hour planning cycle, adjusting plans based on the latest information.
  • The focus is on managing stormwater outlets and blocking potential flow paths to prevent contamination.
  • Zeke discusses the use of lidar data and other mapping tools to predict flow patterns and potential impact areas.

Community Comments and Final Thoughts

  • Zeke addresses comments from the audience, including questions about the facility’s operations and the impact of the incident.
  • The discussion includes the challenges of managing hazardous materials and the potential for creative solutions.
  • Zeke emphasizes the importance of data resources and situational awareness in understanding and responding to environmental hazards.
  • The session concludes with a call for support and a reminder of the importance of understanding the geography of pollution and disaster.