Hi Jack

Well I moved some stuff around in the basement and found the house
ground. It actually protrudes out of the concrete floor directly below
the two breaker panels. Each panel has what appears to be #4 solid
copper coming down to bronze clamps on this rod.

There's no ground outside at all which is why the Verizon guy chose to
ground to the Thomas and Betts meter cabinet that I mentioned which is
4ftx6"x15" or so and partially buried. Here in MD they just do direct
burial rather than use a conduit. The entry to the house panels from
the meter box is just via heavy cable, no conduit there either. The
Comcast guy just put a ground on the splitter and ran it a foot or so
to the closest circuit breaker panel.

So should I just drive one more rod pretty close to the box to finish
the daisy chain close, then go inside and bond to the single point
there? Seems crazy to take this inside... I'll have to drill a hole
through the sill plate on an angle then feed the wire up from my
proposed exterior ground rod, through the sill plate, then down the
inside of the concrete basement wall to where the other two grounds are
attached to the ground post.

tnx
jtm