PG&E Releases List of Pipelines at Risk

In the wake of the devastating natural gas explosion in San Bruno, PG&E released a map and list today of the gas pipelines segments that are being monitored for replacement or repair today, according to the company.

Pacific Gas & Electric Co. released a list of the top 100 "high risk" pipelines to the state Public Utilities Commission earlier today and posted the information online. The San Bruno pipeline that exploded Sept. 9 was not on the list.

Though previous documents that PG&E filed with the state Public Utilities Commission indicated that a stretch of pipeline, known as Line 132,  in South San Francisco was designated as one of its top 100 high-risk segments and was slated for replacement, that segment was not on the list released today. Rather, the list included a segment of Line 132 between Milpitas and Crystal Springs Reservoir.

Attached is the PG&E report that lists the top 100 pipelines in question and a map of pipelines that run through San Francisco and San Mateo counties.

Lines that PG&E is evaluating on the Peninsula include:

Foster City was not included on the list of segements at risk.

Lines that PG&E are evaluating on the Peninsula include:

• An engineering review of 18 feet of pipe near Dunbarton Street and Donahoe Street in Menlo Park. 
• The design materials of 105 feet of pipe near Brittan Avenue and El Camino Real in San Carlos. 
• An assessment for the potential for ground movement along 10 feet of pipe near Milpitas-Alviso Road and Ranch Drive in San Jose.
• An engineering review of 10 feet of pipe near Milpitas-Alviso Road and Ranch Drive in San Jose.

Based on these reviews of the above sites, PG&E will determine "whether any repair or replacement action is warranted." The company did not give a timeline for the repairs, but assured Bay Area customers saying they would "go beyond federal guidelines" for gas transportation pipelines

"There are different regulations on high-population density areas. Extra emphasis is put on safety in these areas."

In addition to the updated map and list of questionable pipelines, customers are encouraged to call the PG&E pipeline helpline at 1-888-743-7431 to determine whether they live within 500 feet of gas transmission pipelines.