Spencer Hunt, September 3, 2012. Source: The Columbus Dispatch
Study suggests water trucked to Ohio from Pa. might be radioactive
Millions of barrels of wastewater trucked into Ohio from shale-gas wells in Pennsylvania might be highly radioactive, according to a government study.
Radium in one sample of Marcellus shale wastewater, also called brine, that Pennsylvania officials collected in 2009 was 3,609 times more radioactive than a federal safety limit for drinking water. It was 300 times higher than a Nuclear Regulatory Commission limit for industrial discharges to water.
The December 2011 study, compiled by the U.S. Geological Survey, also found that the median levels of radium in brine from Marcellus shale wells was more than three times higher than brine collected from conventional oil and gas wells.
“These are very, very high concentrations of radium compared to other oil and gas brines,” said Mark Engle, a U.S. Geological Survey research geologist and co-author of the report.
State law bans radioactive shale-well sand and sludge from Ohio landfills. However, brine can be sent down any of Ohio’s 171 active disposal wells regardless of how much radium it contains. Michael Snee, the Ohio Department of Health’s radiation-protection chief, said that’s the safest place for brine.“Injection wells are almost the perfect solution for that disposal issue,” Snee said.
However, environmental advocates say the Geological Survey’s report intensifies their fears of surface spills and leaks to groundwater.
“It’s an alarm bell in the night that we better get serious about testing the material in the Utica shale right here in Ohio,” said Jack Shaner, an Ohio Environmental Council lobbyist.
Shaner and others said the study shows that state officials should look at what’s bubbling out of Ohio’s shale wells.
Radiation is yet another wrinkle in the ongoing debate over “fracking,” a process that sends millions of gallons of water, sand and chemicals down wells to shatter shale and free trapped oil and gas. Thousands of Marcellus shale wells have been drilled in Pennsylvania. Of the 12.2 million barrels of brine injected into Ohio disposal wells last year, 53 percent came from Pennsylvania and West Virginia. Continue reading