When necessary, evacuation is the first choice of action; however, sometimes conditions for a safe evacuation do not exist, and the public is asked to "shelter-in-place".
Sheltering-in-place means to stay indoors: home, school, or work. The public is asked to take precautions such as turning off air conditioners and ventilation systems, and closing all windows and doors. Further precautions include taping around doors and windows, and sheltering in a room located in the center of the building.
Seal off vents including clothing dryer, and exhaust fans.
Sheltering-in-place is often the only option during a toxic release that affects air quality. The average Canadian house, with ventilations off and sealed, will provide some safety for up to eight hours, depending on the nature of the hazard.
When sheltering-in place:
- Bring all people and pets inside;
- Close and lock all windows and doors;
- Close all internal doors;
- Seal door and window gaps with tape or damp towels;
- Seal around vents, air conditioners, fans, and furnaces, as well as close fireplace dampers;
- If exposed to the hazard, shower and change clothing;
- Consider going into the basement of other underground areas;
- Locate in a central room, and near a washroom;
- Access your emergency kit;
- Avoid consuming contaminated food or water;
- Monitor the Alberta Emergency Alert system, and check local news outlets for further instructions;
- If vapours enter the shelter/home, breathe through a damp cloth using shallow breath;
Only exit the shelter when Town of Sylvan Lake officials state it is safe to do so. Once outside, remain outside until the building is "aired-out". Turning on all vents and fans, and opening doors and windows helps remove any toxins from inside the building. Wait at least 20 minutes to air out.
Do not eat or drink anything exposed to the contaminant.
Sheltering in a vehicle
If you encounter an airborne hazardous material release while in your vehicle:
- Move away from the danger area, and avoid visible clouds;
- Turn on your local radio, or check your Alberta Emergency Alert, and follow instructions;
- You must shut off your vehicle and evacuate the area on foot in the case of a flammable material release;
- Close all windows, doors, and vents;
- Shut off the heater or air conditioner;
- In most cases, driving away from the area is safer than waiting it out.
If you cannot drive out of the danger area, shut off your vehicle, and wait for instructions. Turn on your hazard light, and use your horn and headlights to attract attention when necessary.