Information on Natural Gas Pipeline Safety


On September 9, 2010, a 30-inch Pacific Gas and Electric Company (PG&E) natural gas transmission pipeline in San Bruno ruptured, claiming the lives of eight residents, injuring numerous others, and destroying many homes.

As the state agency charged with overseeing the operation of the state’s utilities, the CPUC is taking numerous steps to ensure public safety in the immediate and longer-term. 

Below you will find information on three pipeline safety proceedings the CPUC has underway and additional resources on pipeline safety. At right, see the most recent updates on the proceedings and related pipeline safety matters.

March 13, 2015: CPUC President Proposes $1.6 Billion in Remedies in PG&E Pipeline Cases, Increasing Penalty Amount by $200 Million and Directing $850 Million to Shareholder-Funded Safety Improvements 


June 5, 2013: Safety and Enforcement Division Reply Brief 

September 24, 2014: Ex Parte rules expanded in PG&E pipeline penalty consideration cases 

June 3, 2013: CPUC Letter to NTSB on Progress Made in Addressing Safety Recommendations 

May 7, 2012: Gas Pipeline Safety Update 

Feb. 13, 2012: Gas Pipeline Safety Update 

Jan. 2012: Overview of CPUC Actions in Response to NTSB and Independent Review Panel Recommendations 

     Detailed Implementation Status 

The CPUC issued a staff report alleging that PG&E violated state law and various federal and state pipeline safety regulations and accepted industry standards, leading to the September 9, 2010, pipeline rupture.  The CPUC’s Commissioners voted unanimously on Jan. 12, 2012, to immediately open a penalty consideration (I.12-01-007) case to examine the report and, as appropriate, consider proper penalties and remedies for such violations.



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