ECN Forum Forums Code Related Discussion NEC & other Code issues natural gas in 500.5 ?

i havent been able to find natural gas in the 500.5 classifications. what i want to know is if the nec intends for us to classify the gas meter entering a building to be a classified location so that we have to keep our service a specified distance from it. the utilitiy companies have rules, but it seems that the nec should address it also.