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Study: Fracking not affecting groundwater in Arkansas Published: May 15, 2013

Shale gas production in Arkansas has not contaminated groundwater, a study by Duke University and the U.S. Geological Survey indicates.
Scientists analyzed 127 shallow drinking water wells in areas overlying Fayetteville Shale gas production in north-central Arkansas for major and trace elements and hydrocarbons, using isotopic tracers to identify the sources of possible contaminants, a Duke release reported Wednesday.

"Our results show no discernible impairment of groundwater quality in areas associated with natural gas drilling and hydraulic fracturing in this region," Duke geochemistry Professor Avner Vengosh said.

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