I am a emergency responder in a different county about 30 miles from the Pacific Gas and Electric fire in San Bruno. A couple of mounths ago I atteneded the PG&E pipeline safety seminar. They have an excellent safety record, and to say they take safety extreamly seriously would be an understatement. They showed us pictures of some of the "dig in" disasters they have had. The gas company has no control over how much soil people remove on top of the pipeline. It made me a believer, unless the gas company told be it was safe I wouldn't use any tillage in the right away.
The NTSB is investigating now. They say they can't find any records of any odor complaints to PGE, the Air Pollution Control District or the Fire Dept. They are sayig the results will be avaliable in 14-18 months. They have an early suspect. About 2 years ago there was work done on a sewer pipe that is located diagonal and just under the gas line. They did a trenchless replacement of the sewer line. Apparently this involves pulling a hardened steel beaker-expander throught the old sewer (in this case 4 inches) breaking and expanding the old pipe to 10-12 inches and pulling a new 8 inch pipe through the old one. (Perhaps some plumber can give a better/more correct version of this). This must have but an enormous pressure on the gas line.
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Today's Featured Article - Restoration Story: Fordson Major - by Anthony West. George bought his Fordson Major from a an implement sale about 18 years ago for £200.00 (UK). There is no known history regarding its origins or what service it had done, but the following work was undertaken alone to bring it up to show standard. From the engine number, it was found that this Major was produced late 1946. It was almost complete but had various parts that would definitely need replacing.
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