5.4 Natural Hazards, Hazardous Materials & Major Incidents

Key Takeaways

  • Hazard response begins uphill, upwind, and upstream when possible, with isolation and notification rather than untrained entry or cleanup.
  • During an earthquake, Drop, Cover, and Hold On; a doorway is not the preferred general refuge in modern buildings.
  • During flooding, move to higher ground and never walk, swim, or drive through floodwater.
  • For violence, hazardous releases, severe weather, and infrastructure failure, guards follow the site plan, communicate verified conditions, and yield command to public responders.
Last updated: September 2026

Recognize without becoming exposed

A guard may be first to notice an odor, vapor cloud, leaking container, placard, dead vegetation, multiple ill people, rising water, structural cracking, power failure, or violent event. Recognition does not make the guard a hazardous-material technician, rescue specialist, electrician, or tactical officer. Stop at a safe distance, move uphill, upwind, and upstream when those directions reduce exposure, isolate the area, call 911, and consult the emergency plan. Do not smell, touch, taste, collect, or clean an unknown material.

Give responders the exact location, visible container or placard information observed safely, wind or water direction, symptoms, fire or reaction, people exposed, and access route. Safety data sheets and facility contacts can help, but do not delay emergency notification while searching for paperwork. If contamination may have occurred, avoid spreading it into clean areas and follow dispatcher or hazmat instructions.

Severe weather and natural hazards

Protective action is hazard-specific:

HazardImmediate principleGuard support
EarthquakeDrop, Cover, and Hold On during shakingStay away from glass and falling objects; after shaking, assess exits, fire, gas, injury, and structural damage
FloodMove to higher ground; never walk, swim, or drive through floodwaterClose affected access, report rising water, keep people from flooded roads and electrical hazards
Tornado/severe windMove to the designated interior low-level refuge away from windowsMonitor official alerts and account for people under the plan
LightningMove indoors or into an appropriate enclosed vehicleKeep people away from open areas, isolated trees, water, and conductive hazards
Extreme heat/coldReduce exposure and recognize illnessRequest medical help, move to safe climate when possible, check vulnerable occupants

Modern emergency guidance does not recommend standing in a doorway during an earthquake; ordinary doorways are not necessarily stronger and may expose a person to swinging doors or debris. After shaking, do not use a damaged elevator, touch downed lines, ignite flames near suspected gas leaks, or reenter a damaged structure until cleared. Expect aftershocks.

Floodwater can conceal current, holes, contamination, and energized lines. A familiar road or shallow-looking surface is not proof of safety. Turn around and use the approved route. Keep barriers far enough back that approaching drivers can stop safely.

Utility and infrastructure failures

During a power loss, activate backup communications and lighting, check critical alarms and controlled doors, protect elevator locations without attempting unauthorized rescue, and call the proper facility and emergency contacts. Do not enter electrical rooms or reset equipment unless specifically authorized and trained. A gas odor, hissing line, sparking equipment, or widespread illness may require evacuation and 911. Avoid switches, radios, flames, or engines where they may ignite a suspected flammable atmosphere.

Water failure, communications outage, cyber disruption, or access-control failure can create secondary security issues. Shift to manual accountability procedures in the continuity plan, verify instructions through approved channels, protect keys and paper records, and document degraded controls.

Violence and major incidents

For an active violent threat, immediately call 911 when possible and use the site's current emergency plan. People in danger generally need options based on location: move away from the attacker if a safe route exists, secure or hide from access when escape is unavailable, and defend life only as a last resort under the facts and law. A guard should not move occupants toward unverified gunfire, open a locked area to an unidentified voice, or leave a safe group to hunt a suspect. Relay descriptions, location, direction, weapons, injuries, and changes to police. Keep hands visible and follow officers' commands when they arrive.

Mass-casualty and public-safety command belongs to responding agencies. Preserve lanes and staging space, help with accountability and facility knowledge, and do not conflict with incident command. Media statements and family notifications go through designated officials.

Recovery and reporting

Record official alerts received, observations, protective actions, notifications, route or control failures, injured or missing people, responders, transfer of command, and reentry authorization. Preserve alarm, video, access, and communication records. Conduct no unauthorized cleanup or evidence collection.

Use recognize—isolate—notify—protect—support. The best action often looks restrained because it prevents one unknown hazard from producing additional victims.

Reliable warnings

Use official weather and emergency notifications rather than forwarding an unverified post. Note the alert's affected area, timing, protective instruction, and update source. When conditions change faster than a routine message, report the direct observation through the emergency chain. Never treat an expired warning as current merely because it remains visible on a feed.

Test Your Knowledge

What should a guard do first after discovering an unknown leaking chemical container?

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Test Your Knowledge

What is the recommended immediate action during earthquake shaking?

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Test Your Knowledge

A roadway into the site is covered by moving floodwater. What should the guard do?

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