John,
Check out this link....They just got their site up again.
http://www.vacavalleyrc.com/
Also, there is usually someone there flying on any nice weekend. Just stop by anytime. The gate will always be closed but if someone is there (but the lock and chain will be off the gate opr just hanging from the gate unlocked), just unlatch the gate, drive through and then relatch the gate. Follow the dirt road to the field. The flying site is off of Cement Hill road near Peabody. I hope this helps!!
Mike