In the state of Pennsylvania, home to the lucrative Marcellus Shale formation, 74 facilities treat wastewater from the process of hydraulic fracturing (a.k.a.
“fracking”) for natural gas and release it into streams. There’s no
national set of standards that guides this treatment process—the EPA notes
that the Clean Water Act’s guidelines were developed before fracking
even existed, and that many of the processing plants “are not properly
equipped to treat this type of wastewater”—and scientists have conducted
relatively little assessment of the wastewater to ensure it’s safe
after being treated.
Recently, a group of Duke University scientists decided to do some
testing. They contacted the owners of one treatment plant, the Josephine
Brine Treatment Facility on Blacklick Creek in Indiana County,
Pennsylvania, but, “when we tried to work with them, it was very
difficult getting ahold of the right person,” says Avner Vengosh, an Earth scientist from Duke. “Eventually, we just went and tested water right from a public area downstream.”
Their analyses, made on water samples collected repeatedly over the
course of two years, were even more concerning than we’d feared. As published today in the journal Environmental Science and Technology,
they found high concentrations of the element radium, a highly
radioactive substance. The concentrations were roughly 200 times higher
than background levels. In addition, amounts of chloride and bromide in
the water were two to ten times greater than normal.
“Even if, today, you completely stopped disposal of the wastewater,”
Vengosh says, there’s enough contamination built up that”you’d still end
up with a place that the U.S. would consider a radioactive waste site.”
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