The reason for a use being made conditional is the unusual impact it may exert upon one or more of the following: the public health, safety, morals and general welfare; coordinated and practical community development; proper density of population; emergency management preparedness and operations; airports and national defense facilities; the provision of adequate light and air, access to incident solar energy, police protection, vehicle parking and loading space, transportation, sewerage, schools, recreational facilities and public grounds; and the provision of a safe, reliable and adequate water supply for domestic, commercial, agricultural or industrial use and other public requirements.