College Park, GA VHF Trunked System???

Does anyone know if College Park, GA is utilizing the following frequencies in any type of trunked radio system?

FCC Callsign – WQAB387

Frequencies:
151.0175
154.0475
154.9725
155.8800

If yes, then what type of system is being used and who are the primary users (public safety, public works, etc.)?

Thanks in advance