PG&E released a list of its Top 100 Segments assembled as follows:
One of the tools PG&E uses is a risk management program that inventories each of the 20,000 segments within PG&E’s natural gas transmission pipeline system and evaluates them against criteria such as:
- the potential for third party damage like dig-ins from construction,
- the potential for corrosion,
- the potential for ground movement, and
- the physical design and characteristics of the pipe segment.
PG&E also considers the proximity to high density populations, potential reliability impacts and environmentally sensitive areas.
None of these segments are in B'game, but apparently main piplines in town are near Skyline Blvd. (which would make sense given the location of the San Bruno explosion) and near Rollins Rd. More information should be forthcoming soon. The website linked above gives an overview of how extensive the system is.


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