Branched Service Line-a gas service line that begins at the existing service line or is installed concurrently with the primary service line but serves a separate residence.
Replaced Service Line-a natural gas service line where the fitting that connects the service line to the main is replaced or the piping connected to this fitting is replaced;
Service Line Serving Single-family Residence-a natural gas service line that begins at the fitting that connects the service line to the main and serves only one single-family residence.
La. Admin. Code tit. 43, § XIII-1933