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Associated Press
In a Monday, Feb. 13, 2012 photo, Ray Kemble stands in view of a natural gas wellhead across that street of his home, that he believes contaminated his well in Dimock, Pa. The U.S. Environmental Protection Agency appears to be ramping up its interest in the Marcellus Shale a rock formation in Pennsylvania and surrounding states that is believed to hold the nation’s largest reservoir of gas with investigations in both the northeastern and southwestern corners of Pennsylvania. The drilling industry accuses EPA of overreach. (AP Photo/Matt Rourke)

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