Protective Distance

Initial Isolation and Downwind Evacuation Distances

For incidents involving a biological weapon of mass destruction, involving small or large spills/packages, day or night.

First ISOLATE in all directions: 300 ft

Then EVACUATE downwind: 300 ft

To plot a protective action distance, first specify a location and wind direction below. Once a distance is plotted, you can drag the spill or right click the map to move the spill to a new location.
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  • If a fire is not involved
  • If a fire is involved
Wind Direction
Select the direction of the wind at your location.
Wind Rose Wind Arrow
Is the material involved in a fire?
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Find more information on this substance at: PubChem, PubMed