Re: Clearance between Light Poles and Gas Lines
I don't think this is addressed at all in the NEC.
FWIW, the National Fuel Gas Code,at 3.1.1 states:
Underground gas piping shall be installed with sufficient clearance from any other underground structure to avoid contact therewith, to allow maintenance, and to protect against damage from proximity to other structures.
Also, gas piping subject to damage shall be installed with at least 18 in. of cover.