A condition poses an urgent or emergency threat to the health or safety of students or staff, including: gas leaks, nonfunctioning heating, ventilation, fire sprinklers or air-conditioning systems, electrical power failure, major sewage line stoppage, major pest or vermin infestation, broken windows or exterior doors or gates that will not lock and that pose a security risk, abatement of hazardous materials previously undiscovered that pose and immediate threat to pupils or staff, structural damage creating a hazardous or uninhabitable condition, and any other emergency conditions the school district deems appropriate.