EPA Releases Draft Findings of Pavillion, Wyoming Ground Water Investigation for Public Comment and Independent Scientific Review

Media Contacts

EPA Headquarters: Larry Jackson, 202-564-0236, 202-564-4355; jackson.larry@epa.gov

EPA Region 8: Richard Mylott. 303-312-6654; mylott.richard@epa.gov

EPA Releases Draft Findings of Pavillion, Wyoming Ground Water Investigation for Public Comment and Independent Scientific Review

(Denver, Colo. –December 8, 2011) The U.S. Environmental Protection Agency (EPA) today released a draft analysis of data from its Pavillion, Wyoming ground water investigation. At the request of Pavillion residents, EPA began investigating water quality concerns in private drinking water wells three years ago. Since that time, in conjunction with the state of Wyoming, the local community, and the owner of the gas field, Encana, EPA has been working to assess ground water quality and identify potential sources of contamination.

EPA constructed two deep monitoring wells to sample water in the aquifer. The draft report indicates that ground water in the aquifer contains compounds likely associated with gas production practices, including hydraulic fracturing. EPA also re-tested private and public drinking water wells in the community. The samples were consistent with chemicals identified in earlier EPA results released in 2010 and are generally below established health and safety standards. To ensure a transparent and rigorous analysis, EPA is releasing these findings for public comment and will submit them to an independent scientific review panel. The draft findings announced today are specific to Pavillion, where the fracturing is taking place in and below the drinking water aquifer and in close proximity to drinking water wells – production conditions different from those in many other areas of the country.

Natural gas plays a key role in our nation’s clean energy future and the Obama Administration is committed to ensuring that the development of this vital resource occurs safely and responsibly. At the direction of Congress, and separate from this ground water investigation, EPA has begun a national study on the potential impacts of hydraulic fracturing on drinking water resources.

“EPA’s highest priority remains ensuring that Pavillion residents have access to safe drinking water,” said Jim Martin, EPA’s regional administrator in Denver. “We will continue to work cooperatively with the State, Tribes, Encana and the community to secure long-term drinking water solutions. We look forward to having these findings in the draft report informed by a transparent and public review process. In consultation with the Tribes, EPA will also work with the State on additional investigation of the Pavillion field.”

Findings in the Two Deep Water Monitoring Wells:

EPA’s analysis of samples taken from the Agency’s deep monitoring wells in the aquifer indicates detection of synthetic chemicals, like glycols and alcohols consistent with gas production and hydraulic fracturing fluids, benzene concentrations well above Safe Drinking Water Act standards and high methane levels. Given the area’s complex geology and the proximity of drinking water wells to ground water contamination, EPA is concerned about the movement of contaminants within the aquifer and the safety of drinking water wells over time.

Findings in the Private and Public Drinking Water Wells:

EPA also updated its sampling of Pavillion area drinking water wells. Chemicals detected in the most recent samples are consistent with those identified in earlier EPA samples and include methane, other petroleum hydrocarbons and other chemical compounds. The presence of these compounds is consistent with migration from areas of gas production. Detections in drinking water wells are generally below established health and safety standards. In the fall of 2010, the U.S. Department of Health and Human Services’ Agency for Toxic Substances and Disease Registry reviewed EPA’s data and recommended that affected well owners take several precautionary steps, including using alternate sources of water for drinking and cooking, and ventilation when showering. Those recommendations remain in place and Encana has been funding the provision of alternate water supplies.

Before issuing the draft report, EPA shared preliminary data with, and obtained feedback from, Wyoming state officials, Encana, Tribes and Pavillion residents. The draft report is available for a 45 day public comment period and a 30 day peer-review process led by a panel of independent scientists.

For more information on EPA's Pavillion groundwater investigation, visit: http://www.epa.gov/region8/superfund/wy/pavillion/index.html

EPA Report: Fracking Contaminated Drinking Water

CONTACT: EWG Public Affairs: 202.667.6982. leeann@ewg.org
FOR IMMEDIATE RELEASE: August 3rd, 2011

Washington, D.C.– Contrary to the drilling industry claim that hydraulic fracturing has never contaminated groundwater, the Environmental Protection Agency concluded in a 1987 study that “fracking” of a natural gas well in West Virginia

contaminated an underground drinking water source. That all-but-forgotten report to Congress, uncovered by Environmental Working Group and Earthjustice, found that fracturing gel from a shale gas well more than 4,000 feet deep had contaminated well water.

EPA investigators concluded that the contamination was “illustrative” of a broader problem of pollution associated with hydraulic fracturing but said the agency’s investigation was hampered by confidentiality agreements between industry and affected landowners. Environmental Working Group’s year-long investigation of the incident found that several abandoned natural gas wells located near the fractured well in West Virginia could have served as conduits that allowed the gel, a common ingredient in fracking fluid, to migrate into the water well.

“When you add up the gel in the water, the presence of abandoned wells and the documented ability of drilling fluids to migrate through these wells into underground water supplies, there is a lot of evidence that EPA got it right and that this was indeed a case of hydraulic fracturing contamination of groundwater,” said Dusty Horwitt, EWG’s senior oil and gas analyst and author of “Cracks in the Façade,” EWG’s report about EPA’s finding.

“Now it’s up to EPA to pick up where it left off 25 years ago and determine the true risks of fracking so that our drinking water can be protected.”

Since the 1987 report, the industry has hydraulically fractured hundreds of thousands of wells and is continuing a historic push into natural gas-bearing shale formations, once considered inaccessible, that lie beneath populated areas in a number of states, including West Virginia, New York, Pennsylvania, Ohio, Michigan, Louisiana and Arkansas.

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