SBCO Fire
I just spent several days in Big Bear Lake and monitored 8-Fire-1 where I heard county fire dispatching calls to the mountain area. The Big Bear Lake fire VHF system was mostly dead but I did hear them on 8-Fire-1 so they may have switched over after various merging going on with Big Bear City I believe. TG seem still valid as well as frequencies. Suggest you try monitoring the vhf access 159.120 mhz. I can hear it all the way to the coast. It seems to rebroadcast most if not all of the 800 mhz 8-Fire-1 traffic.
Of course monitoring BDU and BDF vhf systems would be heard to LA too. Any major wildland or potential wildland fire eg: vehicle near brush would be dispatched to multiple agencies during times of high fire danger.
I did not hear any of the 8-Law-1 traffic eg: sheriff in the mountains. They have either changed TG or are on a different system now. So I am looking for confirmation on that myself.