Actually, this talkgroup was already in the database, but listed down with the EMS talkgroups. I moved it up to the group of fire talkgroups.
It's a little tricky figuring out Greenville County's channel use on Palmetto 800. I think that each "fire dispatch group" has a dispatch talkgroup and at least one Ops talkgroup. By "fire dispatch group" I mean a group of FD's that share a dispatch center and thus a talkgroups. There's one for Greer Firecomm (Greer, Taylors, Boiling Springs, etc), one for South Greenville, one for "County Fire" which is dispatched by MedComm, etc.
I'm getting information from a number of different people, some in the forums and some by direct email. Let's keep listening and logging and see what we can come up with. I'm told that some of these FDs may be using simplex frequencies for on-scene comms as well.