Yeah, that was kind of the plan.
There are no local groups that will take them in. They will only work with socialized animals, not ferals.
I did get put in contact with the feral cat network, which apparently is pretty wide-spread. I have just put the garden coordinator in contact with an entity from that network in a neighboring county that is willing to loan traps and that will arrange a spay/neuter, vaccinations, pain meds, etc, for $75 a cat by donation (which is pretty darned good!). I am now soliciting funds from the other gardeners, and seeing if the coordinator will allow the placement of the traps.
Best to get this done quickly, so they are healed and 100% before the cold sets in for winter