Call the gas line company and ask for a "locate" of
just where the lines are buried. They should provide
this service for free. So you don't drive a ground
rod thru the gas line........
The general rule of thumb is to bond any metalic objects together if they are within 6 feet of each
other....... I would NOT want any ground rods, wires, etc to be able to arc to each other because they were not bonded together.
See the good advice at the Polyphaser website on
Also, Only one ground rod is not nearly enough for
a proper lightning ground system. You need a number of
them properly interconnected to be able to survive
direct hits without damage. (Ground rods should be
spaced twice the distance apart as the depth in normal soil. (8 foot deep rods should be spaced 16 feet apart)