In a recent speech Environmental Protection Agency (EPA) Administrator Gina McCarthy provided details on the EPA's ongoing study of the potential impacts of hydraulic fracturing on drinking water resources. Administrator McCarthy stated that the study would be consistent with the administration's support for unconventional oil and gas extraction within the context of its climate programme and focus on best management practices that states and industry members could implement to protect drinking water resources. The study was designed to cover a number of issues related to hydraulic fracturing, including water acquisition, chemical mixing, well construction, wastewater disposal and seismicity.

McCarthy stated that the study is part of the EPA's overall efforts regarding hydraulic fracturing, which also include a methane strategy that the EPA intends to release this fall.

Samuel B Boxerman, Roger R Martella Jr, Joel F Visser, Jim Wedeking

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