0.5 Alarm 1 Appliance (mostly happens with CFS Alarm Calls and Tree downs?)
If thats your standard for Structure Alarms in your group, you've got issues.
Between the SOP and the Tables it makes for a rather confusing read.
Why not just run an ever escalating alarm level?
Inital response - Will either be one truck (Tree Down, Assist Resident, etc) or straight to 1st Alarm
1st Alarm - 2 Appliances
2nd Alarm - 4 Appliances, GDO notified
3rd Alarm - 6 Appliances, GDO Attendence required
4th Alarm - 8 Appliances, RDO notified, consider strike teams for Rural jobs
Every subsequent alarm level, just add 2 appliances.
It shouldnt matter about the number of brigades involved, as on the fireground you worry about trucks as resources, not how many brigades are there. If you get on scene to a fire, and there are two trucks there, then requesting a 2nd Alarm gets you two more trucks. It should be a rigidly defined response protocol. This would allow an IC to know exactly what he is getting when he asks for an upgrade to an xx Alarm, but as Bittenyakka has suggested, it all goes to the dogs when brigades end up turning out everything they have, turning a Fixed Alarm call into a 3rd Alarm.
Having a rigid alarm response protocol that relies on the number of trucks also allows a direct comparison of responses to incidents, rather than having, for example, a 3rd Alarm house fire with 10 trucks, or a 3rd Alarm house fire with 6. It levels the playing field. Of course for rural jobs, you get to a point where you have multiple strike teams working and the notion of defined alarm levels for response is useless.
As it stands, the whole thing is a little confusing.