EPA Links Fracking to Water Contamination for the First Time
11 Dec, 2011
In a first, federal environment officials scientifically linked underground water pollution with hydraulic fracturing, concluding that contaminants found in central Wyoming were likely caused by the gas drilling process.
The findings by the Environmental Protection Agency come partway through a separate national study by the agency to determine whether fracking presents a risk to water resources.
In the 121-page draft report released December 8th, 2011, EPA officials said that the contamination near the town of Pavillion, Wyo., had most likely seeped up from gas wells and contained at least 10 compounds known to be used in frack fluids.
“The presence of synthetic compounds such as glycol ethers … and the assortment of other organic components is explained as the result of direct mixing of hydraulic fracturing fluids with ground water in the Pavillion gas field,” the draft report states. “Alternative explanations were carefully considered.”
The agency’s findings could be a turning point in the heated national debate about whether contamination from fracking is happening, and are likely to shape how the country regulates and develops natural gas resources in the Marcellus Shale and across the Eastern Appalachian states.
Some of the findings in the report also directly contradict longstanding arguments by the drilling industry for why the fracking process is safe: that hydrologic pressure would naturally force fluids down, not up; that deep geologic layers provide a watertight barrier preventing the movement of chemicals towards the surface; and that the problems with the cement and steel barriers around gas wells aren’t connected to fracking.
Environmental advocates greeted the report with a sense of vindication and seized the opportunity to argue for stronger federal regulation of fracking.
“No one can accurately say that there is ‘no risk’ where fracking is concerned,” wrote Amy Mall, a senior policy analyst at the Natural Resources Defense Council, on her blog. “This draft report makes obvious that there are many factors at play, any one of which can go wrong. Much stronger rules are needed to ensure that well construction standards are stronger and reduce threats to drinking water.”
A spokesman for EnCana, the gas company that owns the Pavillion wells, did not immediately respond to a request for comment. In an email exchange after the EPA released preliminary water test data two weeks ago, the spokesman, Doug Hock, denied that the company’s actions were to blame for the pollution and suggested it was naturally caused.
“Nothing EPA presented suggests anything has changed since August of last year– the science remains inconclusive in terms of data, impact, and source,” Hock wrote. “It is also important to recognize the importance of hydrology and geology with regard to the sampling results in the Pavillion Field. The field consists of gas-bearing zones in the near subsurface, poor general water quality parameters and discontinuous water-bearing zones.”
The EPA’s findings immediately triggered what is sure to become a heated political debate as members of Congress consider afresh proposals to regulate fracking. After a phone call with EPA chief Lisa Jackson this morning, Sen. James Inhofe, R-Okla., told a Senate panel that he found the agency’s report on the Pavillion-area contamination “offensive.” Inhofe’s office had challenged the EPA’s investigation in Wyoming last year, accusing the agency of bias.