On Sun, 07 Sep 2014 13:02:17 -0400, wrote:

The best electrode these days is the steel in the foundation of your
house, if it is available.

If I'm correct this is what I have. My foundation is cable-tensioned.
I see steel buried in the foundation - between the framing (vertical),
at the access panel for phone, cable, etc. Coming from the foundation.

I see no ground rods anchored in the ground.