In this May 22, 2009 photo shows John Fenton, a farmer who 

In this May 22, 2009 photo shows John Fenton, a farmer who lives near the rural community of Pavillion in central Wyoming, outside his log home near a tank used in natural gas extraction. Fenton and some of his neighbors blame hydraulic fracturing, or "fracking," a common technique used in drilling new oil and gas wells, for fouling their well water and possibly causing health problems among residents. The U.S. Geological Survey plans to release results of the latest testing in the Pavillion area, where some homeowners and the EPA suspect hydraulic fracking has tainted the groundwater. (AP Photo/Bob Moen)
Associated Press
In this May 22, 2009 photo shows John Fenton, a farmer who lives near the rural community of Pavillion in central Wyoming, outside his log home near a tank used in natural gas extraction. Fenton and some of his neighbors blame hydraulic fracturing, or "fracking," a common technique used in drilling new oil and gas wells, for fouling their well water and possibly causing health problems among residents. The U.S. Geological Survey plans to release results of the latest testing in the Pavillion area, where some homeowners and the EPA suspect hydraulic fracking has tainted the groundwater. (AP Photo/Bob Moen)
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