Figures analyzed by the Los Angeles Times show PG&E reported more leaking natural gas lines under populated areas than other nationwide utility companies. The newspaper reports the national average of leaking pipelines has declined 30-percent recently but PG&E's went up by 40-percent.
A major natural gas transmission line exploded three weeks ago in San Bruno, killing 7 people and injuring dozens more.
PG&E said the L.A. Times analysis was flawed because different utility companies use different measurement techniques.