Coordinates can be provided from a GPS unit in NAD83 format to identify a rural area or other location that does not have an address. The location must be pre-marked in the field and the excavator must also provide the nearest posted intersection or address and approximate distance from an address, intersection, or highway mile marker. For rural locations the excavator must also provide the Township, Range, and Section number for the site. The excavator must provide a phone number for a field contact who is able to provide driving directions to the location if requested by a facility operator.