We live in an earthquake zone here in UT. Operating both monoplace and multiplace. These chambers have different concerns, the monoplace is a ton or so of equipment, loss of head wall gas etc, the patients are probably not at risk for decompression sickness so we can safely decompress and evacuate to a place of safety. The multiplace has different concerns as far as risk for the inside attendant. We have no specific earthquake policy for our department other than the evacuation policy. The hospital has an earthquake policy and we would terminate the treatments in accordance with our evacuation policy then fall in with the hospital emergency proccesses.