Base Area 2 : A wildland fire zone that represents the major hazard areas of a protection unit; it can be used to calculate the unit's fire danger rating from the base fuel model and slope class
Ralph W. Burklin & Robert G. Purington, Fire Terms: A Guide to Their Meaning and Use, National Protection Association, Boston, MA 1980 USA. (Guide: Meaning and Use, Nat Prot Association Fr Srvc - Amer) {457}