(1) All permit holders must have two-way communications available within the restricted zone with a base station located outside of the zone. The base station must be monitored at all times while the permittee is in the restricted zone. The base station emergency phone number must be on file with DEM or the USFS.

(2) The restricted zone will be closed by a coordinated decision of the DEM and the USFS on the advice of the USGS that hazards are elevated. The restricted zone will be closed when there is an alert issued by the U.S. Geological Survey, and if necessary during advisories issued by the U.S. Geological Survey.

(3) Overnight stays in the restricted zone will be granted only by special permission by the USFS or by the director of DEM or his designee. The permit holder must be doing work requiring night time operations and have constant radio communications. Otherwise, entry and occupancy of the restricted zone will normally be limited to the period one-half hour before sunrise to one-half hour after sunset, as established by the National Weather Service.

(4) The permit for entry into the restricted zone will contain specified routes of travel, duration of stay, type of vehicle or aircraft and description, destination, evacuation route, base radio contact alternative routes, and names of those entering.

(5) Helicopters entering the restricted zone must obtain a mission number from the Mt. St. Helens National Volcanic Monument ((206) 247-5473). Information required is the number of people entering, destination and estimated entry and departure times. All aircraft are to monitor aircraft radio frequently 122.75 MHZ.

(6) Entry into the crater will be limited to scientists, media permit holders, and other officials on official business with supervision by the U.S. Forest Service or U.S. Geological Survey.

(7) Permit holders must be able to leave the restricted zone within one hour.

(8) Permit holders will leave the restricted zone when ordered by proper authorities.

(9) Anyone entering the restricted zone must have with them either a restricted zone permit or a restricted zone contractor's permit card.

(10) It is strongly recommended that all who enter the restricted zone carry emergency gear and a first-aid kit. Recommended minimal emergency equipment should include: Hard hat, respirator or face mask, goggles, water and food.