KEY POINT
Know when to lift an evacuation or SIP order and the factors to consider in returning a community to normal after an emergency event.
Factors to consider:
The reason why the evacuation or SIP event occurred in the first place. The IC must ensure, through the use of the Unified Command structure, that the chemical, radiological or biological substance is contained, if not completely removed from the affected area.
Concentrations of toxic substances may rise over time, and for those in SIP, ICs need to take this information into consideration. Once the event is mitigated the IC should confer with others in the Unified Command to de-escalate the response.