Federal investigators recently learned of last year leak . Utility said it came across record during search of documents . Pipeline rupture 1988 near America killed millions . `` We acknowledged several times that our record-keeping practices are not where they should be , '' said Swanson , adding the utility has made improvements and will become an industry leader in making records available to assure the public it is operating safely . PG & E issues new recommendations .
Federal investigators recently learned of last year leak . Utility said it came across record during search of documents . Pipeline rupture 1988 near America killed millions . PG & E issues new recommendations .