From the North (Healdsubrg):           Highway 101 South to the Penngrove/Petaluma Boulevard North exit.  Turn Right at the light.  Go approximately 1 mile to Skillman Lane (2nd stop light). Turn Right.  Go approximately 1 1/2 miles.  Pass Fair Avenue (approximately 1/4 mile).  Look to your right for a green sign that says PRDC.  Turn Right into driveway.  Stay to your Left as the road forks.  You will come to a gate that says PRDC.  Gate should be open when an event is going on.   From the South (San Francisco):      Higway 101 North to the Penngrove/Petaluma Boulevard North exit.  Turn Left at the light and go over freeway.  Go approximately 1 mile to Skillman Lane (2nd stop light). Turn Right.  Go approximately 1 1/2 miles.  Pass Fair Avenue (approximately 1/4 mile).  Look to your right for a green sign that says PRDC.  Turn Right into driveway.  Stay to your Left as the road forks.  You will come to a gate that says PRDC.  Gate should be open when an event is going on.