Methane in water seen sixfold higher near fracking sites
Water wells close to gas-drilling sites in Pennsylvania had methane levels more than six times higher than more distant wells, evidence that the boost in production is causing leaks, Duke University researchers found. The chemical fingerprint of the methane, the key component of natural gas, along with the presence of ethane and propane, indicate that much of the gas is from deep underground, such as the Marcellus Shale, according to a study released recently.
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