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Analyses of 60 wells paint a picture of contamination near active gas wells. Almost all water wells more than a kilometer from an active gas well had only a few parts per million methane in their water. But most wells 1 kilometer or less from a gas well produced water with 19 to 64 parts per million methane. That’s at and above the “action level” of federal safety guidelines for methane, which can displace air’s oxygen to cause asphyxiation. The higher levels are also in the flammable range. “I watched one homeowner light his water on fire,” Jackson says.

In response to the many unknowns, U.S. Energy Secretary Steven Chu announced on 5 May the formation of a blue-ribbon panel to recommend ways to improve the safety and environmental performance of shale gas fracking. Any immediate recommendations are due in 90 days.

http://news.sciencemag.org/sciencenow/2011/05/study-high-tech-gas-drilling-is-.html?ref=hp

 

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