Drillers face first class-action suit for triggered temblors

Drillers face first class-action suit for triggered temblors by Mike Soraghan, July 5, 2012, E&E News
The quakes prompted state officials last summer to ban drilling waste disposal wells in a 1,150-square-mile area. Four wells ceased operations. … There is no federal law against causing earthquakes, but the suit alleges that the quakes were caused by negligence, amounted to trespassing and created a public nuisance (EnergyWire, June 18). Before two of the wells stopped operating in the spring of 2011, there were 85 earthquakes with a magnitude of 2.5 or higher. Since the shutdown there have been fewer quakes, according to the state Geological Survey. The state’s moratorium was based in part on the finding of University of Memphis seismologist Steve Horton, who said continued injection would risk a damaging earthquake in the area. He later published findings linking the earthquakes to drilling-waste wells.

[Refer also to: Halcyon hot springs vanish after B.C. quake ]

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