49 U.S.C. § 60113

Not later than October 24, 1993 , the Secretary of Transportation shall prescribe standards requiring an operator of a natural gas distribution pipeline that does not maintain customer-owned natural gas service lines up to building walls to advise its customers of— (1) the requirements for maintaining those lines; (2) any resources known to the operator that could assist customers in carrying out the maintenance; (3) information the operator has on operating and maintaining its lines that could assist customers; and (4) the potential hazards of not maintaining the lines.