Higher-risk 'Shallow Fracking' More Common than Suspected

Higher-risk 'Shallow Fracking' More Common than Suspected

Postby Oscar » Mon Aug 03, 2015 8:30 pm

Higher-risk 'Shallow Fracking' More Common than Suspected: Study, Lessons for BC, Alberta in new Stanford report.

[ http://thetyee.ca/News/2015/07/27/High- ... -Fracking/ ]

By Andrew Nikiforuk, 27 Jul 2015, TheTyee.ca

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STUDY: The Depths of Hydraulic Fracturing and Accompanying Water Use Across the United States
Robert B. Jackson, Ella R. Lowry, Amy Pickle, Mary Kang, Dominic DiGiulio, and Kaiguang Zhao
[ http://pubs.acs.org/doi/abs/10.1021/acs ... ode=esthag ]

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EXCERPT:

Fracking pollutes: EPA

Last June, the U.S. Environmental Protection Agency concluded in a 500-page draft report that fracking has polluted ground and surface water in cases ranging from Alberta to Pennsylvania.

"Some hydraulic fracturing operations are conducted within formations that contain drinking water resources," the report found, as did Jackson's new study.

"In one field in Alberta, Canada, there is evidence that fracturing in the same formation as a drinking water resource (in combination with well integrity problems)... led to gas migration into water wells," said the EPA study.

According to the study, (See noted below) underground fracking operations have propelled fluids and gases out of the targeted areas "into underground drinking water resources," often through pre-existing fractures and pathways such as nearby abandoned or leaky wells.

In one example, the EPA reported that fracking had contaminated 25 per cent of 36 water wells in northeastern Pennsylvania, though the agency "did not find mechanisms have led to widespread, systemic impacts on drinking water resources in the United States."

In contrast, state agencies in Ohio, Pennsylvania, Texas and West Virginia have reported myriad problems, including hundreds of complaints about groundwater contamination due to fracking.

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STUDY: The Depths of Hydraulic Fracturing and Accompanying Water Use Across the United States
Robert B. Jackson, Ella R. Lowry, Amy Pickle, Mary Kang, Dominic DiGiulio, and Kaiguang Zhao
[ http://pubs.acs.org/doi/abs/10.1021/acs ... ode=esthag ]
Oscar
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