> Stay tuned to the radio or television for information on evacuation routes, temporary shelters and procedures.
> If you have time, minimize contamination in the house by closing all windows, shutting all vents and turning off attic fans.
> Take pre-assembled disaster supplies.
Remember to help your neighbors who may require special assistance — infants, elderly people and people with access and functional needs.
If you are Caught Outside when asked to EVACUATE
> Stay upstream, uphill and upwind. In general, try to go at least a half mile (usually 8-10 city blocks) from the danger area.
> Do not walk into or touch any spilled liquids, airborne mists or condensed solid chemical deposits. Try not to inhale gases, fumes and smoke. If possible, cover mouth with a cloth or mask while leaving the area.
> Stay away from accident victims until the hazardous material has been identified.
If you are in a car when asked to EVACUATE
> Stop and seek shelter in a permanent building.
> If you must remain in your car, keep car windows and vents closed and shut off the air conditioner and heater.
https://www.ready.gov/hazardous-materials-incidents