One of my neighbors had to reroute the gas line to his house where the meter was. A plumber told him to contact the utility. Two of their guys with their work truck and a small trencher used for laying gas pipe came to his house. They cut the old line at the street and at the meter, trenched, and laid new line (yellow plastic), connected the ends and were done in less that two hours. They didn't waste any time and told my neighbor they have done this many times. It certainly pays to get some pros to do special work like this. They have the tools, all the necessary fittings, and experience. It would have a DIYer several days to do that.