I'm new to the area, so I may be misunderstanding your question. I have been monitoring the various trunking systems in the valley and I have received City FD traffic on the Salt Lake City Public Safety System, AC33. I have been getting FD hits on talkgroups 1184, 1216, and 1248. I have heard assorted coms of Fire equipment as well as Ambulance comms. I hope this helps.
Gary KF4YLR