Posted on September 26, 2013 by Mark Walker
“Shoot first, ask questions later” is how Congressman Chris Stewart described EPA’s efforts to link groundwater contamination to hydraulic fracturing. Stewart is the Chair of the Environmental Subcommittee of the House Committee on Science, Space and Technology, chairing the July 24 hearing on “Lessons Learned: EPA’s Investigations of Hydraulic Fracturing.” Specifically at issue was the EPA’s investigation in Pavillion, Wyoming.
In December, 2011, the EPA issued a “draft” report which concluded that hydraulic fracturing in the Pavillion, Wyoming gas field had caused pollution of the deep drinking water aquifer. The draft report was based upon sample results from two EPA monitor wells and was issued without peer review or stakeholder input.
There were serious flaws with EPA’s work. For starters, EPA failed to complete the monitor wells according to its own guidelines. Annular sealants were not properly installed, allowing cement to impact the water quality. A landowner’s complaint that EPA had an anti-freeze leak during drilling operations was not disclosed in the draft report. EPA exposed the wellbores to painted low-carbon steel casing and welding materials, which are known to contain various organic and metal compounds, yet the report inaccurately stated that stainless steel casing had been used. Moreover, several of the constituents which the EPA attributed to hydraulic fracturing fluids (e.g. glycols, 2-butoxyethanol and phenols) are known to be associated with the high pH cement that the EPA used to complete the wells. The bottom line is that the EPA’s own operations introduced the contaminants that it blamed on hydraulic fracturing fluids.
Subsequent testing by the USGS was unable to verify the EPA’s results. The USGS was unable to find some of the compounds that EPA claimed were present, and other constituents were found at significantly lower levels. The USGS was unable to sample one of the two wells due to improper well construction.
The EPA has now walked away from its flawed study, turning the entire investigation over to the State of Wyoming. The EPA has stated that the draft report will not be peer reviewed or finalized, and that the results will not be used in its national hydraulic fracturing study. Nevertheless, the EPA’s handling of Pavillion has cast doubt over the EPA’s national investigation of hydraulic fracturing intended to develop regulatory policy for unconventional reserves, causing Chairman Stewart to conclude, “given EPA’s rush to judgment in Wyoming…we should question whether the Agency’s ongoing study is a genuine, fact-finding, scientific exercise, or a witch-hunt to find a pretext to regulate.”