I used to live in the EastBay back in the late70's and until late 90's . Sorry can't help you their , i am in Nebraska now following Madison PD /S.O. & Norfolk PD. If you have any info back here please send them.
I was confused too at first, because most listings still have the individual city's FD talkgroups. All ALCO fire are dispatched out of the dispatch center at Livermore Labs, and therefore live on the same talkgroup. I think each city retains its fireground talkgroups, but I'm not sure - I don't listen to county fire much if at all.