Efforts by New Jersey lawmakers to formulate regulations against hydraulic fracturing are unnecessary because the state's portion of the Marcellus Shale is too shallow to be drilled for natural gas extraction, energy-industry insiders said. "The only Marcellus [Shale] in New Jersey is near the surface, and near-surface Marcellus is out of the question," said Terry Engelder, a professor at Penn State University, during a call sponsored by the American Petroleum Institute. There aren't any confirmed or recorded cases of the drilling technique polluting water supplies, said John Felmy, API's chief economist.

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