You might need to call the utilities company to mark where your gas, phone, electric wires might be buried, some of them are not very deep at all.
If they mark wrong, you puncture it='s their fault, if you don't call (no mark0 you puncture it,guess who pays then?
If they mark wrong, you puncture it='s their fault, if you don't call (no mark0 you puncture it,guess who pays then?