REDCOM Bulletin Board - Coastal Valleys EMS Agency - County of Sonoma, California
Looking at the latest minutes, apparently AMR won the contract to run the Sonoma County dispatch center. Level funded even.
There is extensive dispatch center info here in these various documents - I did not see any radio freqs listed (they might be still in the SOPs - I didnt check)
If you want to study up on the million details involved in running a modern Emergency Dispatch Center, check out the RFP documents.