No telling the depth of that old gas line, unless ths gas co. has records or the neighbors can recall.
I wanted to replace my fence in 2005, the contractor wouldn't touch it 'til I had the gas company come out and map the gas line (which goes south from the outside meter, the fence ends 2 feet north of it)... Gas Company Guy (GCG) comes out, and hooks up either voltage or tone to it, and walks along with his magic signal pick up stick, and dots along the ground where it runs.
I said "can you tell me how deep the pipe is? I want to take these hollyhocks out with a pick..." / "No, sir, I can't tell you that, we would be responsible if it were off by an inch or two... but this tool, if I push this button, reads it out in inches on the screen" - and points to the 12 on the screen... I ask "would that work up at the front of the house so you could get a slope?" / "If I held it over here, it would show me a number on the screen (22") for this point, too!"
Really liked that guy. :P
Bren R.
