I'm using the rebar in my storage shed/well house as the grounding electrode. I just read that the footing has to be in contact with the earth, which means that I'll have to pull back the plastic that I have extending across the footing. Question: Is it sufficient to pull back say 25 feet of plastic(the UFER has to be 20' long (it will be the entire perimiter rebar), or should the entire footing be on the dirt?
Thanks, Bob