Introduction The decision to evacuate a community is a critical one for t:ree principal reasons, One, presumably there might be a health hazard if the personnel were allowed to remain, wo, there is abrays an element of dager and/or hardship to personnel Anvolved in such an emergency measure, ‘Three, the evacuation of @ siza:le commmity would serio:sly jeopardize the future use of the Nevada Proving Grounds and thus affeet the country's weapons - éevelopment prorran, It ia recognized trat extemating circumstances may accorpany any aituation where conditions imiicate evacuation as a mode of action. The size of the comsunity, areas and accommodations available for the evacuees, meats of tranaportation an¢ routes of evacustion, disposition of ambulatory cases, protection of the property left behind, and many other factors may enter into the decision relative to evacuation, advancey A blanket evaluation cannot be made in each situation can be unique, The following criteria thcrefore are OMe | ho ik dentin ia. suggested as puides/anseasing tie possitle radiological hazards; the final cecision must be made on the tasis of all relevant factors know at the tine.