California utility regulators say some of San Francisco's old, cast iron gas pipelines are in urgent need of being replaced.
The California Public Utilities Commission's top attorney Frank Lindh says 43 miles of cast iron pipes running beneath the city pose a "clear and present danger".
Public awareness of potential problems with aging pipelines has grown since the deadly explosion in San Bruno in 2010.
Lindh said in a letter to San Francisco's city attorney Dennis Herrera that Pacific Gas & Electric Co. wants to replace the iron pipes. Lindh says the city's Department of Public Works won't let the utility finish the project because of a street paving ordinance.
Herrera says he shares the safety concerns, and wants to meet with Lindh as soon as possible to determine what is allegedly holding up the process.
Watchdogs are questioning an exclusive agreement between the City of Oakland and a non-profit group, tapped to lead a multi-million dollar project to redevelop the area around the Coliseum BART station.