One being Tahmoor Dont know exactly what council zones they are in though. I am sure it would be easy enough to find out.
One of my mates was behind getting this one up and running,the council out there is Wollondilly Shire Council,also there is a place out where im from that has some of the best trails in Australia and they are approved by council.
I have also heard that you might need to come up with like a club name or something just for insurance purposes incase someone hurts themself riding and so on.
Hope this helps you a bit by by the sound of it they are gone already