This project involves the periodic jettisoning of excess fire retardant and/or jel material from air tankers onto grass and chaparral vegetation along a ridge-top located in the Bureau of Land Management's (BLM) Cow Mountain Recreation Area near Ukiah, California. CAL FIRE air tankers dispatched to a reported fire from the Ukiah Air Attack Base are at times, while airborne, cancelled prior to dropping retardant/jel. As not all air tankers are capable of landing with a full load of fire retardant/gel, they must jettison a portion of the load to insure a safe landing. The us os this jettison site is conducted under a Memorandum of Understanding with the BLM, which manages the Recreation Area for hiking, camping, horseback riding, bicycling, off-road vehicle use & hunting. The jettison area is closed off to public use.