Evacuation and Shelter-in-Place Training > Incident Commanders

OEM/Hazmat

• Uses Vulnerability Planning to estimate the geographic area potentially affected by a release of an EHS and to identify the population, critical facilities, and sensitive environmental areas that would be at risk.
• The zone is a circular area with the facility at the center. The radius of the Vulnerability Zone (VZ) depends upon the quantity and rate of release, meteorological conditions, surrounding topography, and toxicity of the substance. For planning purposes, the estimate of the VZ is based on worst-case assumptions regarding these variables.
• OEM/Hazmat uses the software package Computer-Aided Management of Emergency Response (CAMEO) to calculate the VZ. The population within the zone is determined and presented in the SARA Plan. The facility-specific information is used in calculating the VZs.

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